diff options
Diffstat (limited to 'clients/window.c')
| -rw-r--r-- | clients/window.c | 5658 |
1 files changed, 5658 insertions, 0 deletions
diff --git a/clients/window.c b/clients/window.c new file mode 100644 index 00000000..56de5d78 --- /dev/null +++ b/clients/window.c @@ -0,0 +1,5658 @@ +/* + * Copyright © 2008 Kristian Høgsberg + * Copyright © 2012-2013 Collabora, Ltd. + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include "config.h" + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> +#include <errno.h> +#include <math.h> +#include <assert.h> +#include <time.h> +#include <cairo.h> +#include <sys/mman.h> +#include <sys/epoll.h> +#include <sys/timerfd.h> + +#ifdef HAVE_CAIRO_EGL +#include <wayland-egl.h> + +#ifdef USE_CAIRO_GLESV2 +#include <GLES2/gl2.h> +#include <GLES2/gl2ext.h> +#else +#include <GL/gl.h> +#endif +#include <EGL/egl.h> +#include <EGL/eglext.h> + +#include <cairo-gl.h> +#else /* HAVE_CAIRO_EGL */ +typedef void *EGLDisplay; +typedef void *EGLConfig; +typedef void *EGLContext; +#define EGL_NO_DISPLAY ((EGLDisplay)0) +#endif /* no HAVE_CAIRO_EGL */ + +#include <xkbcommon/xkbcommon.h> +#include <wayland-cursor.h> + +#include <linux/input.h> +#include <wayland-client.h> +#include "../shared/cairo-util.h" +#include "text-cursor-position-client-protocol.h" +#include "workspaces-client-protocol.h" +#include "../shared/os-compatibility.h" + +#include "window.h" + +struct shm_pool; + +struct global { + uint32_t name; + char *interface; + uint32_t version; + struct wl_list link; +}; + +struct display { + struct wl_display *display; + struct wl_registry *registry; + struct wl_compositor *compositor; + struct wl_subcompositor *subcompositor; + struct wl_shell *shell; + struct wl_shm *shm; + struct wl_data_device_manager *data_device_manager; + struct text_cursor_position *text_cursor_position; + struct workspace_manager *workspace_manager; + EGLDisplay dpy; + EGLConfig argb_config; + EGLContext argb_ctx; + cairo_device_t *argb_device; + uint32_t serial; + + int display_fd; + uint32_t display_fd_events; + struct task display_task; + + int epoll_fd; + struct wl_list deferred_list; + + int running; + + struct wl_list global_list; + struct wl_list window_list; + struct wl_list input_list; + struct wl_list output_list; + + struct theme *theme; + + struct wl_cursor_theme *cursor_theme; + struct wl_cursor **cursors; + + display_output_handler_t output_configure_handler; + display_global_handler_t global_handler; + + void *user_data; + + struct xkb_context *xkb_context; + + uint32_t workspace; + uint32_t workspace_count; + + /* A hack to get text extents for tooltips */ + cairo_surface_t *dummy_surface; + void *dummy_surface_data; + + int has_rgb565; + int seat_version; +}; + +enum { + TYPE_NONE, + TYPE_TOPLEVEL, + TYPE_FULLSCREEN, + TYPE_MAXIMIZED, + TYPE_TRANSIENT, + TYPE_MENU, + TYPE_CUSTOM +}; + +struct window_output { + struct output *output; + struct wl_list link; +}; + +struct toysurface { + /* + * Prepare the surface for drawing. Makes sure there is a surface + * of the right size available for rendering, and returns it. + * dx,dy are the x,y of wl_surface.attach. + * width,height are the new buffer size. + * If flags has SURFACE_HINT_RESIZE set, the user is + * doing continuous resizing. + * Returns the Cairo surface to draw to. + */ + cairo_surface_t *(*prepare)(struct toysurface *base, int dx, int dy, + int32_t width, int32_t height, uint32_t flags, + enum wl_output_transform buffer_transform, int32_t buffer_scale); + + /* + * Post the surface to the server, returning the server allocation + * rectangle. The Cairo surface from prepare() must be destroyed + * after calling this. + */ + void (*swap)(struct toysurface *base, + enum wl_output_transform buffer_transform, int32_t buffer_scale, + struct rectangle *server_allocation); + + /* + * Make the toysurface current with the given EGL context. + * Returns 0 on success, and negative of failure. + */ + int (*acquire)(struct toysurface *base, EGLContext ctx); + + /* + * Release the toysurface from the EGL context, returning control + * to Cairo. + */ + void (*release)(struct toysurface *base); + + /* + * Destroy the toysurface, including the Cairo surface, any + * backing storage, and the Wayland protocol objects. + */ + void (*destroy)(struct toysurface *base); +}; + +struct surface { + struct window *window; + + struct wl_surface *surface; + struct wl_subsurface *subsurface; + int synchronized; + int synchronized_default; + struct toysurface *toysurface; + struct widget *widget; + int redraw_needed; + struct wl_callback *frame_cb; + uint32_t last_time; + + struct rectangle allocation; + struct rectangle server_allocation; + + struct wl_region *input_region; + struct wl_region *opaque_region; + + enum window_buffer_type buffer_type; + enum wl_output_transform buffer_transform; + int32_t buffer_scale; + + cairo_surface_t *cairo_surface; + + struct wl_list link; +}; + +struct window { + struct display *display; + struct window *parent; + struct wl_list window_output_list; + char *title; + struct rectangle saved_allocation; + struct rectangle min_allocation; + struct rectangle pending_allocation; + int x, y; + int resize_edges; + int redraw_needed; + int redraw_task_scheduled; + struct task redraw_task; + int resize_needed; + int saved_type; + int type; + int focus_count; + + int resizing; + int fullscreen_method; + int configure_requests; + + enum preferred_format preferred_format; + + window_key_handler_t key_handler; + window_keyboard_focus_handler_t keyboard_focus_handler; + window_data_handler_t data_handler; + window_drop_handler_t drop_handler; + window_close_handler_t close_handler; + window_fullscreen_handler_t fullscreen_handler; + window_output_handler_t output_handler; + + struct surface *main_surface; + struct wl_shell_surface *shell_surface; + + struct frame *frame; + + /* struct surface::link, contains also main_surface */ + struct wl_list subsurface_list; + + void *user_data; + struct wl_list link; +}; + +struct widget { + struct window *window; + struct surface *surface; + struct tooltip *tooltip; + struct wl_list child_list; + struct wl_list link; + struct rectangle allocation; + widget_resize_handler_t resize_handler; + widget_redraw_handler_t redraw_handler; + widget_enter_handler_t enter_handler; + widget_leave_handler_t leave_handler; + widget_motion_handler_t motion_handler; + widget_button_handler_t button_handler; + widget_touch_down_handler_t touch_down_handler; + widget_touch_up_handler_t touch_up_handler; + widget_touch_motion_handler_t touch_motion_handler; + widget_touch_frame_handler_t touch_frame_handler; + widget_touch_cancel_handler_t touch_cancel_handler; + widget_axis_handler_t axis_handler; + void *user_data; + int opaque; + int tooltip_count; + int default_cursor; +}; + +struct touch_point { + int32_t id; + struct widget *widget; + struct wl_list link; +}; + +struct input { + struct display *display; + struct wl_seat *seat; + struct wl_pointer *pointer; + struct wl_keyboard *keyboard; + struct wl_touch *touch; + struct wl_list touch_point_list; + struct window *pointer_focus; + struct window *keyboard_focus; + struct window *touch_focus; + int current_cursor; + uint32_t cursor_anim_start; + struct wl_callback *cursor_frame_cb; + struct wl_surface *pointer_surface; + uint32_t modifiers; + uint32_t pointer_enter_serial; + uint32_t cursor_serial; + float sx, sy; + struct wl_list link; + + struct widget *focus_widget; + struct widget *grab; + uint32_t grab_button; + + struct wl_data_device *data_device; + struct data_offer *drag_offer; + struct data_offer *selection_offer; + + struct { + struct xkb_keymap *keymap; + struct xkb_state *state; + xkb_mod_mask_t control_mask; + xkb_mod_mask_t alt_mask; + xkb_mod_mask_t shift_mask; + } xkb; + + struct task repeat_task; + int repeat_timer_fd; + uint32_t repeat_sym; + uint32_t repeat_key; + uint32_t repeat_time; +}; + +struct output { + struct display *display; + struct wl_output *output; + struct rectangle allocation; + struct wl_list link; + int transform; + int scale; + + display_output_handler_t destroy_handler; + void *user_data; +}; + +enum frame_button_action { + FRAME_BUTTON_NULL = 0, + FRAME_BUTTON_ICON = 1, + FRAME_BUTTON_CLOSE = 2, + FRAME_BUTTON_MINIMIZE = 3, + FRAME_BUTTON_MAXIMIZE = 4, +}; + +enum frame_button_pointer { + FRAME_BUTTON_DEFAULT = 0, + FRAME_BUTTON_OVER = 1, + FRAME_BUTTON_ACTIVE = 2, +}; + +enum frame_button_align { + FRAME_BUTTON_RIGHT = 0, + FRAME_BUTTON_LEFT = 1, +}; + +enum frame_button_decoration { + FRAME_BUTTON_NONE = 0, + FRAME_BUTTON_FANCY = 1, +}; + +struct frame_button { + struct widget *widget; + struct frame *frame; + cairo_surface_t *icon; + enum frame_button_action type; + enum frame_button_pointer state; + struct wl_list link; /* buttons_list */ + enum frame_button_align align; + enum frame_button_decoration decoration; +}; + +struct frame { + struct widget *widget; + struct widget *child; + struct wl_list buttons_list; +}; + +struct menu { + struct window *window; + struct widget *widget; + struct input *input; + const char **entries; + uint32_t time; + int current; + int count; + int release_count; + menu_func_t func; +}; + +struct tooltip { + struct widget *parent; + struct window *window; + struct widget *widget; + char *entry; + struct task tooltip_task; + int tooltip_fd; + float x, y; +}; + +struct shm_pool { + struct wl_shm_pool *pool; + size_t size; + size_t used; + void *data; +}; + +enum { + CURSOR_DEFAULT = 100, + CURSOR_UNSET +}; + +enum window_location { + WINDOW_INTERIOR = 0, + WINDOW_RESIZING_TOP = 1, + WINDOW_RESIZING_BOTTOM = 2, + WINDOW_RESIZING_LEFT = 4, + WINDOW_RESIZING_TOP_LEFT = 5, + WINDOW_RESIZING_BOTTOM_LEFT = 6, + WINDOW_RESIZING_RIGHT = 8, + WINDOW_RESIZING_TOP_RIGHT = 9, + WINDOW_RESIZING_BOTTOM_RIGHT = 10, + WINDOW_RESIZING_MASK = 15, + WINDOW_EXTERIOR = 16, + WINDOW_TITLEBAR = 17, + WINDOW_CLIENT_AREA = 18, +}; + +static const cairo_user_data_key_t shm_surface_data_key; + +/* #define DEBUG */ + +#ifdef DEBUG + +static void +debug_print(void *proxy, int line, const char *func, const char *fmt, ...) +__attribute__ ((format (printf, 4, 5))); + +static void +debug_print(void *proxy, int line, const char *func, const char *fmt, ...) +{ + va_list ap; + struct timeval tv; + + gettimeofday(&tv, NULL); + fprintf(stderr, "%8ld.%03ld ", + (long)tv.tv_sec & 0xffff, (long)tv.tv_usec / 1000); + + if (proxy) + fprintf(stderr, "%s@%d ", + wl_proxy_get_class(proxy), wl_proxy_get_id(proxy)); + + /*fprintf(stderr, __FILE__ ":%d:%s ", line, func);*/ + fprintf(stderr, "%s ", func); + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); +} + +#define DBG(fmt, ...) \ + debug_print(NULL, __LINE__, __func__, fmt, ##__VA_ARGS__) + +#define DBG_OBJ(obj, fmt, ...) \ + debug_print(obj, __LINE__, __func__, fmt, ##__VA_ARGS__) + +#else + +#define DBG(...) do {} while (0) +#define DBG_OBJ(...) do {} while (0) + +#endif + +static void +surface_to_buffer_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height) +{ + int32_t tmp; + + switch (buffer_transform) { + case WL_OUTPUT_TRANSFORM_90: + case WL_OUTPUT_TRANSFORM_270: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + tmp = *width; + *width = *height; + *height = tmp; + break; + default: + break; + } + + *width *= buffer_scale; + *height *= buffer_scale; +} + +static void +buffer_to_surface_size (enum wl_output_transform buffer_transform, int32_t buffer_scale, int32_t *width, int32_t *height) +{ + int32_t tmp; + + switch (buffer_transform) { + case WL_OUTPUT_TRANSFORM_90: + case WL_OUTPUT_TRANSFORM_270: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + tmp = *width; + *width = *height; + *height = tmp; + break; + default: + break; + } + + *width /= buffer_scale; + *height /= buffer_scale; +} + +#ifdef HAVE_CAIRO_EGL + +struct egl_window_surface { + struct toysurface base; + cairo_surface_t *cairo_surface; + struct display *display; + struct wl_surface *surface; + struct wl_egl_window *egl_window; + EGLSurface egl_surface; +}; + +static struct egl_window_surface * +to_egl_window_surface(struct toysurface *base) +{ + return container_of(base, struct egl_window_surface, base); +} + +static cairo_surface_t * +egl_window_surface_prepare(struct toysurface *base, int dx, int dy, + int32_t width, int32_t height, uint32_t flags, + enum wl_output_transform buffer_transform, int32_t buffer_scale) +{ + struct egl_window_surface *surface = to_egl_window_surface(base); + + surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height); + + wl_egl_window_resize(surface->egl_window, width, height, dx, dy); + cairo_gl_surface_set_size(surface->cairo_surface, width, height); + + return cairo_surface_reference(surface->cairo_surface); +} + +static void +egl_window_surface_swap(struct toysurface *base, + enum wl_output_transform buffer_transform, int32_t buffer_scale, + struct rectangle *server_allocation) +{ + struct egl_window_surface *surface = to_egl_window_surface(base); + + cairo_gl_surface_swapbuffers(surface->cairo_surface); + wl_egl_window_get_attached_size(surface->egl_window, + &server_allocation->width, + &server_allocation->height); + + buffer_to_surface_size (buffer_transform, buffer_scale, + &server_allocation->width, + &server_allocation->height); +} + +static int +egl_window_surface_acquire(struct toysurface *base, EGLContext ctx) +{ + struct egl_window_surface *surface = to_egl_window_surface(base); + cairo_device_t *device; + + device = cairo_surface_get_device(surface->cairo_surface); + if (!device) + return -1; + + if (!ctx) { + if (device == surface->display->argb_device) + ctx = surface->display->argb_ctx; + else + assert(0); + } + + cairo_device_flush(device); + cairo_device_acquire(device); + if (!eglMakeCurrent(surface->display->dpy, surface->egl_surface, + surface->egl_surface, ctx)) + fprintf(stderr, "failed to make surface current\n"); + + return 0; +} + +static void +egl_window_surface_release(struct toysurface *base) +{ + struct egl_window_surface *surface = to_egl_window_surface(base); + cairo_device_t *device; + + device = cairo_surface_get_device(surface->cairo_surface); + if (!device) + return; + + if (!eglMakeCurrent(surface->display->dpy, NULL, NULL, + surface->display->argb_ctx)) + fprintf(stderr, "failed to make context current\n"); + + cairo_device_release(device); +} + +static void +egl_window_surface_destroy(struct toysurface *base) +{ + struct egl_window_surface *surface = to_egl_window_surface(base); + struct display *d = surface->display; + + cairo_surface_destroy(surface->cairo_surface); + eglDestroySurface(d->dpy, surface->egl_surface); + wl_egl_window_destroy(surface->egl_window); + surface->surface = NULL; + + free(surface); +} + +static struct toysurface * +egl_window_surface_create(struct display *display, + struct wl_surface *wl_surface, + uint32_t flags, + struct rectangle *rectangle) +{ + struct egl_window_surface *surface; + + if (display->dpy == EGL_NO_DISPLAY) + return NULL; + + surface = calloc(1, sizeof *surface); + if (!surface) + return NULL; + + surface->base.prepare = egl_window_surface_prepare; + surface->base.swap = egl_window_surface_swap; + surface->base.acquire = egl_window_surface_acquire; + surface->base.release = egl_window_surface_release; + surface->base.destroy = egl_window_surface_destroy; + + surface->display = display; + surface->surface = wl_surface; + + surface->egl_window = wl_egl_window_create(surface->surface, + rectangle->width, + rectangle->height); + + surface->egl_surface = eglCreateWindowSurface(display->dpy, + display->argb_config, + surface->egl_window, + NULL); + + surface->cairo_surface = + cairo_gl_surface_create_for_egl(display->argb_device, + surface->egl_surface, + rectangle->width, + rectangle->height); + + return &surface->base; +} + +#else + +static struct toysurface * +egl_window_surface_create(struct display *display, + struct wl_surface *wl_surface, + uint32_t flags, + struct rectangle *rectangle) +{ + return NULL; +} + +#endif + +struct shm_surface_data { + struct wl_buffer *buffer; + struct shm_pool *pool; +}; + +struct wl_buffer * +display_get_buffer_for_surface(struct display *display, + cairo_surface_t *surface) +{ + struct shm_surface_data *data; + + data = cairo_surface_get_user_data(surface, &shm_surface_data_key); + + return data->buffer; +} + +static void +shm_pool_destroy(struct shm_pool *pool); + +static void +shm_surface_data_destroy(void *p) +{ + struct shm_surface_data *data = p; + + wl_buffer_destroy(data->buffer); + if (data->pool) + shm_pool_destroy(data->pool); + + free(data); +} + +static struct wl_shm_pool * +make_shm_pool(struct display *display, int size, void **data) +{ + struct wl_shm_pool *pool; + int fd; + + fd = os_create_anonymous_file(size); + if (fd < 0) { + fprintf(stderr, "creating a buffer file for %d B failed: %m\n", + size); + return NULL; + } + + *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (*data == MAP_FAILED) { + fprintf(stderr, "mmap failed: %m\n"); + close(fd); + return NULL; + } + + pool = wl_shm_create_pool(display->shm, fd, size); + + close(fd); + + return pool; +} + +static struct shm_pool * +shm_pool_create(struct display *display, size_t size) +{ + struct shm_pool *pool = malloc(sizeof *pool); + + if (!pool) + return NULL; + + pool->pool = make_shm_pool(display, size, &pool->data); + if (!pool->pool) { + free(pool); + return NULL; + } + + pool->size = size; + pool->used = 0; + + return pool; +} + +static void * +shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset) +{ + if (pool->used + size > pool->size) + return NULL; + + *offset = pool->used; + pool->used += size; + + return (char *) pool->data + *offset; +} + +/* destroy the pool. this does not unmap the memory though */ +static void +shm_pool_destroy(struct shm_pool *pool) +{ + munmap(pool->data, pool->size); + wl_shm_pool_destroy(pool->pool); + free(pool); +} + +/* Start allocating from the beginning of the pool again */ +static void +shm_pool_reset(struct shm_pool *pool) +{ + pool->used = 0; +} + +static int +data_length_for_shm_surface(struct rectangle *rect) +{ + int stride; + + stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, + rect->width); + return stride * rect->height; +} + +static cairo_surface_t * +display_create_shm_surface_from_pool(struct display *display, + struct rectangle *rectangle, + uint32_t flags, struct shm_pool *pool) +{ + struct shm_surface_data *data; + uint32_t format; + cairo_surface_t *surface; + cairo_format_t cairo_format; + int stride, length, offset; + void *map; + + data = malloc(sizeof *data); + if (data == NULL) + return NULL; + + if (flags & SURFACE_HINT_RGB565 && display->has_rgb565) + cairo_format = CAIRO_FORMAT_RGB16_565; + else + cairo_format = CAIRO_FORMAT_ARGB32; + + stride = cairo_format_stride_for_width (cairo_format, rectangle->width); + length = stride * rectangle->height; + data->pool = NULL; + map = shm_pool_allocate(pool, length, &offset); + + if (!map) { + free(data); + return NULL; + } + + surface = cairo_image_surface_create_for_data (map, + cairo_format, + rectangle->width, + rectangle->height, + stride); + + cairo_surface_set_user_data(surface, &shm_surface_data_key, + data, shm_surface_data_destroy); + + if (flags & SURFACE_HINT_RGB565 && display->has_rgb565) + format = WL_SHM_FORMAT_RGB565; + else { + if (flags & SURFACE_OPAQUE) + format = WL_SHM_FORMAT_XRGB8888; + else + format = WL_SHM_FORMAT_ARGB8888; + } + + data->buffer = wl_shm_pool_create_buffer(pool->pool, offset, + rectangle->width, + rectangle->height, + stride, format); + + return surface; +} + +static cairo_surface_t * +display_create_shm_surface(struct display *display, + struct rectangle *rectangle, uint32_t flags, + struct shm_pool *alternate_pool, + struct shm_surface_data **data_ret) +{ + struct shm_surface_data *data; + struct shm_pool *pool; + cairo_surface_t *surface; + + if (alternate_pool) { + shm_pool_reset(alternate_pool); + surface = display_create_shm_surface_from_pool(display, + rectangle, + flags, + alternate_pool); + if (surface) { + data = cairo_surface_get_user_data(surface, + &shm_surface_data_key); + goto out; + } + } + + pool = shm_pool_create(display, + data_length_for_shm_surface(rectangle)); + if (!pool) + return NULL; + + surface = + display_create_shm_surface_from_pool(display, rectangle, + flags, pool); + + if (!surface) { + shm_pool_destroy(pool); + return NULL; + } + + /* make sure we destroy the pool when the surface is destroyed */ + data = cairo_surface_get_user_data(surface, &shm_surface_data_key); + data->pool = pool; + +out: + if (data_ret) + *data_ret = data; + + return surface; +} + +static int +check_size(struct rectangle *rect) +{ + if (rect->width && rect->height) + return 0; + + fprintf(stderr, "tried to create surface of " + "width: %d, height: %d\n", rect->width, rect->height); + return -1; +} + +cairo_surface_t * +display_create_surface(struct display *display, + struct wl_surface *surface, + struct rectangle *rectangle, + uint32_t flags) +{ + if (check_size(rectangle) < 0) + return NULL; + + assert(flags & SURFACE_SHM); + return display_create_shm_surface(display, rectangle, flags, + NULL, NULL); +} + +struct shm_surface_leaf { + cairo_surface_t *cairo_surface; + /* 'data' is automatically destroyed, when 'cairo_surface' is */ + struct shm_surface_data *data; + + struct shm_pool *resize_pool; + int busy; +}; + +static void +shm_surface_leaf_release(struct shm_surface_leaf *leaf) +{ + if (leaf->cairo_surface) + cairo_surface_destroy(leaf->cairo_surface); + /* leaf->data already destroyed via cairo private */ + + if (leaf->resize_pool) + shm_pool_destroy(leaf->resize_pool); + + memset(leaf, 0, sizeof *leaf); +} + +#define MAX_LEAVES 3 + +struct shm_surface { + struct toysurface base; + struct display *display; + struct wl_surface *surface; + uint32_t flags; + int dx, dy; + + struct shm_surface_leaf leaf[MAX_LEAVES]; + struct shm_surface_leaf *current; +}; + +static struct shm_surface * +to_shm_surface(struct toysurface *base) +{ + return container_of(base, struct shm_surface, base); +} + +static void +shm_surface_buffer_state_debug(struct shm_surface *surface, const char *msg) +{ +#ifdef DEBUG + struct shm_surface_leaf *leaf; + char bufs[MAX_LEAVES + 1]; + int i; + + for (i = 0; i < MAX_LEAVES; i++) { + leaf = &surface->leaf[i]; + + if (leaf->busy) + bufs[i] = 'b'; + else if (leaf->cairo_surface) + bufs[i] = 'a'; + else + bufs[i] = ' '; + } + + bufs[MAX_LEAVES] = '\0'; + DBG_OBJ(surface->surface, "%s, leaves [%s]\n", msg, bufs); +#endif +} + +static void +shm_surface_buffer_release(void *data, struct wl_buffer *buffer) +{ + struct shm_surface *surface = data; + struct shm_surface_leaf *leaf; + int i; + int free_found; + + shm_surface_buffer_state_debug(surface, "buffer_release before"); + + for (i = 0; i < MAX_LEAVES; i++) { + leaf = &surface->leaf[i]; + if (leaf->data && leaf->data->buffer == buffer) { + leaf->busy = 0; + break; + } + } + assert(i < MAX_LEAVES && "unknown buffer released"); + + /* Leave one free leaf with storage, release others */ + free_found = 0; + for (i = 0; i < MAX_LEAVES; i++) { + leaf = &surface->leaf[i]; + + if (!leaf->cairo_surface || leaf->busy) + continue; + + if (!free_found) + free_found = 1; + else + shm_surface_leaf_release(leaf); + } + + shm_surface_buffer_state_debug(surface, "buffer_release after"); +} + +static const struct wl_buffer_listener shm_surface_buffer_listener = { + shm_surface_buffer_release +}; + +static cairo_surface_t * +shm_surface_prepare(struct toysurface *base, int dx, int dy, + int32_t width, int32_t height, uint32_t flags, + enum wl_output_transform buffer_transform, int32_t buffer_scale) +{ + int resize_hint = !!(flags & SURFACE_HINT_RESIZE); + struct shm_surface *surface = to_shm_surface(base); + struct rectangle rect = { 0}; + struct shm_surface_leaf *leaf = NULL; + int i; + + surface->dx = dx; + surface->dy = dy; + + /* pick a free buffer, preferrably one that already has storage */ + for (i = 0; i < MAX_LEAVES; i++) { + if (surface->leaf[i].busy) + continue; + + if (!leaf || surface->leaf[i].cairo_surface) + leaf = &surface->leaf[i]; + } + DBG_OBJ(surface->surface, "pick leaf %d\n", + (int)(leaf - &surface->leaf[0])); + + if (!leaf) { + fprintf(stderr, "%s: all buffers are held by the server.\n", + __func__); + exit(1); + return NULL; + } + + if (!resize_hint && leaf->resize_pool) { + cairo_surface_destroy(leaf->cairo_surface); + leaf->cairo_surface = NULL; + shm_pool_destroy(leaf->resize_pool); + leaf->resize_pool = NULL; + } + + surface_to_buffer_size (buffer_transform, buffer_scale, &width, &height); + + if (leaf->cairo_surface && + cairo_image_surface_get_width(leaf->cairo_surface) == width && + cairo_image_surface_get_height(leaf->cairo_surface) == height) + goto out; + + if (leaf->cairo_surface) + cairo_surface_destroy(leaf->cairo_surface); + +#ifdef USE_RESIZE_POOL + if (resize_hint && !leaf->resize_pool) { + /* Create a big pool to allocate from, while continuously + * resizing. Mmapping a new pool in the server + * is relatively expensive, so reusing a pool performs + * better, but may temporarily reserve unneeded memory. + */ + /* We should probably base this number on the output size. */ + leaf->resize_pool = shm_pool_create(surface->display, + 6 * 1024 * 1024); + } +#endif + + rect.width = width; + rect.height = height; + + leaf->cairo_surface = + display_create_shm_surface(surface->display, &rect, + surface->flags, + leaf->resize_pool, + &leaf->data); + wl_buffer_add_listener(leaf->data->buffer, + &shm_surface_buffer_listener, surface); + +out: + surface->current = leaf; + + return cairo_surface_reference(leaf->cairo_surface); +} + +static void +shm_surface_swap(struct toysurface *base, + enum wl_output_transform buffer_transform, int32_t buffer_scale, + struct rectangle *server_allocation) +{ + struct shm_surface *surface = to_shm_surface(base); + struct shm_surface_leaf *leaf = surface->current; + + server_allocation->width = + cairo_image_surface_get_width(leaf->cairo_surface); + server_allocation->height = + cairo_image_surface_get_height(leaf->cairo_surface); + + buffer_to_surface_size (buffer_transform, buffer_scale, + &server_allocation->width, + &server_allocation->height); + + wl_surface_attach(surface->surface, leaf->data->buffer, + surface->dx, surface->dy); + wl_surface_damage(surface->surface, 0, 0, + server_allocation->width, server_allocation->height); + wl_surface_commit(surface->surface); + + DBG_OBJ(surface->surface, "leaf %d busy\n", + (int)(leaf - &surface->leaf[0])); + + leaf->busy = 1; + surface->current = NULL; +} + +static int +shm_surface_acquire(struct toysurface *base, EGLContext ctx) +{ + return -1; +} + +static void +shm_surface_release(struct toysurface *base) +{ +} + +static void +shm_surface_destroy(struct toysurface *base) +{ + struct shm_surface *surface = to_shm_surface(base); + int i; + + for (i = 0; i < MAX_LEAVES; i++) + shm_surface_leaf_release(&surface->leaf[i]); + + free(surface); +} + +static struct toysurface * +shm_surface_create(struct display *display, struct wl_surface *wl_surface, + uint32_t flags, struct rectangle *rectangle) +{ + struct shm_surface *surface; + DBG_OBJ(wl_surface, "\n"); + + surface = xmalloc(sizeof *surface); + memset(surface, 0, sizeof *surface); + + if (!surface) + return NULL; + + surface->base.prepare = shm_surface_prepare; + surface->base.swap = shm_surface_swap; + surface->base.acquire = shm_surface_acquire; + surface->base.release = shm_surface_release; + surface->base.destroy = shm_surface_destroy; + + surface->display = display; + surface->surface = wl_surface; + surface->flags = flags; + + return &surface->base; +} + +/* + * The following correspondences between file names and cursors was copied + * from: https://bugs.kde.org/attachment.cgi?id=67313 + */ + +static const char *bottom_left_corners[] = { + "bottom_left_corner", + "sw-resize", + "size_bdiag" +}; + +static const char *bottom_right_corners[] = { + "bottom_right_corner", + "se-resize", + "size_fdiag" +}; + +static const char *bottom_sides[] = { + "bottom_side", + "s-resize", + "size_ver" +}; + +static const char *grabbings[] = { + "grabbing", + "closedhand", + "208530c400c041818281048008011002" +}; + +static const char *left_ptrs[] = { + "left_ptr", + "default", + "top_left_arrow", + "left-arrow" +}; + +static const char *left_sides[] = { + "left_side", + "w-resize", + "size_hor" +}; + +static const char *right_sides[] = { + "right_side", + "e-resize", + "size_hor" +}; + +static const char *top_left_corners[] = { + "top_left_corner", + "nw-resize", + "size_fdiag" +}; + +static const char *top_right_corners[] = { + "top_right_corner", + "ne-resize", + "size_bdiag" +}; + +static const char *top_sides[] = { + "top_side", + "n-resize", + "size_ver" +}; + +static const char *xterms[] = { + "xterm", + "ibeam", + "text" +}; + +static const char *hand1s[] = { + "hand1", + "pointer", + "pointing_hand", + "e29285e634086352946a0e7090d73106" +}; + +static const char *watches[] = { + "watch", + "wait", + "0426c94ea35c87780ff01dc239897213" +}; + +struct cursor_alternatives { + const char **names; + size_t count; +}; + +static const struct cursor_alternatives cursors[] = { + {bottom_left_corners, ARRAY_LENGTH(bottom_left_corners)}, + {bottom_right_corners, ARRAY_LENGTH(bottom_right_corners)}, + {bottom_sides, ARRAY_LENGTH(bottom_sides)}, + {grabbings, ARRAY_LENGTH(grabbings)}, + {left_ptrs, ARRAY_LENGTH(left_ptrs)}, + {left_sides, ARRAY_LENGTH(left_sides)}, + {right_sides, ARRAY_LENGTH(right_sides)}, + {top_left_corners, ARRAY_LENGTH(top_left_corners)}, + {top_right_corners, ARRAY_LENGTH(top_right_corners)}, + {top_sides, ARRAY_LENGTH(top_sides)}, + {xterms, ARRAY_LENGTH(xterms)}, + {hand1s, ARRAY_LENGTH(hand1s)}, + {watches, ARRAY_LENGTH(watches)}, +}; + +static void +create_cursors(struct display *display) +{ + struct weston_config *config; + struct weston_config_section *s; + int size; + char *theme = NULL; + unsigned int i, j; + struct wl_cursor *cursor; + + config = weston_config_parse("weston.ini"); + s = weston_config_get_section(config, "shell", NULL, NULL); + weston_config_section_get_string(s, "cursor-theme", &theme, NULL); + weston_config_section_get_int(s, "cursor-size", &size, 32); + weston_config_destroy(config); + + display->cursor_theme = wl_cursor_theme_load(theme, size, display->shm); + free(theme); + display->cursors = + xmalloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]); + + for (i = 0; i < ARRAY_LENGTH(cursors); i++) { + cursor = NULL; + for (j = 0; !cursor && j < cursors[i].count; ++j) + cursor = wl_cursor_theme_get_cursor( + display->cursor_theme, cursors[i].names[j]); + + if (!cursor) + fprintf(stderr, "could not load cursor '%s'\n", + cursors[i].names[0]); + + display->cursors[i] = cursor; + } +} + +static void +destroy_cursors(struct display *display) +{ + wl_cursor_theme_destroy(display->cursor_theme); + free(display->cursors); +} + +struct wl_cursor_image * +display_get_pointer_image(struct display *display, int pointer) +{ + struct wl_cursor *cursor = display->cursors[pointer]; + + return cursor ? cursor->images[0] : NULL; +} + +static void +surface_flush(struct surface *surface) +{ + if (!surface->cairo_surface) + return; + + if (surface->opaque_region) { + wl_surface_set_opaque_region(surface->surface, + surface->opaque_region); + wl_region_destroy(surface->opaque_region); + surface->opaque_region = NULL; + } + + if (surface->input_region) { + wl_surface_set_input_region(surface->surface, + surface->input_region); + wl_region_destroy(surface->input_region); + surface->input_region = NULL; + } + + surface->toysurface->swap(surface->toysurface, + surface->buffer_transform, surface->buffer_scale, + &surface->server_allocation); + + cairo_surface_destroy(surface->cairo_surface); + surface->cairo_surface = NULL; +} + +int +window_has_focus(struct window *window) +{ + return window->focus_count > 0; +} + +static void +window_flush(struct window *window) +{ + struct surface *surface; + + if (window->type == TYPE_NONE) { + window->type = TYPE_TOPLEVEL; + if (window->shell_surface) + wl_shell_surface_set_toplevel(window->shell_surface); + } + + wl_list_for_each(surface, &window->subsurface_list, link) { + if (surface == window->main_surface) + continue; + + surface_flush(surface); + } + + surface_flush(window->main_surface); +} + +struct display * +window_get_display(struct window *window) +{ + return window->display; +} + +static void +surface_create_surface(struct surface *surface, int dx, int dy, uint32_t flags) +{ + struct display *display = surface->window->display; + struct rectangle allocation = surface->allocation; + + if (!surface->toysurface && display->dpy && + surface->buffer_type == WINDOW_BUFFER_TYPE_EGL_WINDOW) { + surface->toysurface = + egl_window_surface_create(display, + surface->surface, + flags, + &allocation); + } + + if (!surface->toysurface) + surface->toysurface = shm_surface_create(display, + surface->surface, + flags, &allocation); + + surface->cairo_surface = surface->toysurface->prepare( + surface->toysurface, dx, dy, + allocation.width, allocation.height, flags, + surface->buffer_transform, surface->buffer_scale); +} + +static void +window_create_main_surface(struct window *window) +{ + struct surface *surface = window->main_surface; + uint32_t flags = 0; + int dx = 0; + int dy = 0; + + if (window->resizing) + flags |= SURFACE_HINT_RESIZE; + + if (window->preferred_format == WINDOW_PREFERRED_FORMAT_RGB565) + flags |= SURFACE_HINT_RGB565; + + if (window->resize_edges & WINDOW_RESIZING_LEFT) + dx = surface->server_allocation.width - + surface->allocation.width; + + if (window->resize_edges & WINDOW_RESIZING_TOP) + dy = surface->server_allocation.height - + surface->allocation.height; + + window->resize_edges = 0; + + surface_create_surface(surface, dx, dy, flags); +} + +int +window_get_buffer_transform(struct window *window) +{ + return window->main_surface->buffer_transform; +} + +void +window_set_buffer_transform(struct window *window, + enum wl_output_transform transform) +{ + window->main_surface->buffer_transform = transform; + wl_surface_set_buffer_transform(window->main_surface->surface, + transform); +} + +void +window_set_buffer_scale(struct window *window, + int32_t scale) +{ + window->main_surface->buffer_scale = scale; + wl_surface_set_buffer_scale(window->main_surface->surface, + scale); +} + +uint32_t +window_get_buffer_scale(struct window *window) +{ + return window->main_surface->buffer_scale; +} + +uint32_t +window_get_output_scale(struct window *window) +{ + struct window_output *window_output; + struct window_output *window_output_tmp; + int scale = 1; + + wl_list_for_each_safe(window_output, window_output_tmp, + &window->window_output_list, link) { + if (window_output->output->scale > scale) + scale = window_output->output->scale; + } + + return scale; +} + +static void frame_destroy(struct frame *frame); + +static void +surface_destroy(struct surface *surface) +{ + if (surface->frame_cb) + wl_callback_destroy(surface->frame_cb); + + if (surface->input_region) + wl_region_destroy(surface->input_region); + + if (surface->opaque_region) + wl_region_destroy(surface->opaque_region); + + if (surface->subsurface) + wl_subsurface_destroy(surface->subsurface); + + wl_surface_destroy(surface->surface); + + if (surface->toysurface) + surface->toysurface->destroy(surface->toysurface); + + wl_list_remove(&surface->link); + free(surface); +} + +void +window_destroy(struct window *window) +{ + struct display *display = window->display; + struct input *input; + struct window_output *window_output; + struct window_output *window_output_tmp; + + wl_list_remove(&window->redraw_task.link); + + wl_list_for_each(input, &display->input_list, link) { + if (input->touch_focus == window) + input->touch_focus = NULL; + if (input->pointer_focus == window) + input->pointer_focus = NULL; + if (input->keyboard_focus == window) + input->keyboard_focus = NULL; + if (input->focus_widget && + input->focus_widget->window == window) + input->focus_widget = NULL; + } + + wl_list_for_each_safe(window_output, window_output_tmp, + &window->window_output_list, link) { + free (window_output); + } + + if (window->frame) + frame_destroy(window->frame); + + if (window->shell_surface) + wl_shell_surface_destroy(window->shell_surface); + + surface_destroy(window->main_surface); + + wl_list_remove(&window->link); + + free(window->title); + free(window); +} + +static struct widget * +widget_find_widget(struct widget *widget, int32_t x, int32_t y) +{ + struct widget *child, *target; + + wl_list_for_each(child, &widget->child_list, link) { + target = widget_find_widget(child, x, y); + if (target) + return target; + } + + if (widget->allocation.x <= x && + x < widget->allocation.x + widget->allocation.width && + widget->allocation.y <= y && + y < widget->allocation.y + widget->allocation.height) { + return widget; + } + + return NULL; +} + +static struct widget * +window_find_widget(struct window *window, int32_t x, int32_t y) +{ + struct surface *surface; + struct widget *widget; + + wl_list_for_each(surface, &window->subsurface_list, link) { + widget = widget_find_widget(surface->widget, x, y); + if (widget) + return widget; + } + + return NULL; +} + +static struct widget * +widget_create(struct window *window, struct surface *surface, void *data) +{ + struct widget *widget; + + widget = xzalloc(sizeof *widget); + widget->window = window; + widget->surface = surface; + widget->user_data = data; + widget->allocation = surface->allocation; + wl_list_init(&widget->child_list); + widget->opaque = 0; + widget->tooltip = NULL; + widget->tooltip_count = 0; + widget->default_cursor = CURSOR_LEFT_PTR; + + return widget; +} + +struct widget * +window_add_widget(struct window *window, void *data) +{ + struct widget *widget; + + widget = widget_create(window, window->main_surface, data); + wl_list_init(&widget->link); + window->main_surface->widget = widget; + + return widget; +} + +struct widget * +widget_add_widget(struct widget *parent, void *data) +{ + struct widget *widget; + + widget = widget_create(parent->window, parent->surface, data); + wl_list_insert(parent->child_list.prev, &widget->link); + + return widget; +} + +void +widget_destroy(struct widget *widget) +{ + struct display *display = widget->window->display; + struct surface *surface = widget->surface; + struct input *input; + + /* Destroy the sub-surface along with the root widget */ + if (surface->widget == widget && surface->subsurface) + surface_destroy(widget->surface); + + if (widget->tooltip) { + free(widget->tooltip); + widget->tooltip = NULL; + } + + wl_list_for_each(input, &display->input_list, link) { + if (input->focus_widget == widget) + input->focus_widget = NULL; + } + + wl_list_remove(&widget->link); + free(widget); +} + +void +widget_set_default_cursor(struct widget *widget, int cursor) +{ + widget->default_cursor = cursor; +} + +void +widget_get_allocation(struct widget *widget, struct rectangle *allocation) +{ + *allocation = widget->allocation; +} + +void +widget_set_size(struct widget *widget, int32_t width, int32_t height) +{ + widget->allocation.width = width; + widget->allocation.height = height; +} + +void +widget_set_allocation(struct widget *widget, + int32_t x, int32_t y, int32_t width, int32_t height) +{ + widget->allocation.x = x; + widget->allocation.y = y; + widget_set_size(widget, width, height); +} + +void +widget_set_transparent(struct widget *widget, int transparent) +{ + widget->opaque = !transparent; +} + +void * +widget_get_user_data(struct widget *widget) +{ + return widget->user_data; +} + +static cairo_surface_t * +widget_get_cairo_surface(struct widget *widget) +{ + struct surface *surface = widget->surface; + struct window *window = widget->window; + + if (!surface->cairo_surface) { + if (surface == window->main_surface) + window_create_main_surface(window); + else + surface_create_surface(surface, 0, 0, 0); + } + + return surface->cairo_surface; +} + +static void +widget_cairo_update_transform(struct widget *widget, cairo_t *cr) +{ + struct surface *surface = widget->surface; + double angle; + cairo_matrix_t m; + enum wl_output_transform transform; + int surface_width, surface_height; + int translate_x, translate_y; + int32_t scale; + + surface_width = surface->allocation.width; + surface_height = surface->allocation.height; + + transform = surface->buffer_transform; + scale = surface->buffer_scale; + + switch (transform) { + case WL_OUTPUT_TRANSFORM_FLIPPED: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + cairo_matrix_init(&m, -1, 0, 0, 1, 0, 0); + break; + default: + cairo_matrix_init_identity(&m); + break; + } + + switch (transform) { + case WL_OUTPUT_TRANSFORM_NORMAL: + default: + angle = 0; + translate_x = 0; + translate_y = 0; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED: + angle = 0; + translate_x = surface_width; + translate_y = 0; + break; + case WL_OUTPUT_TRANSFORM_90: + angle = M_PI_2; + translate_x = surface_height; + translate_y = 0; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + angle = M_PI_2; + translate_x = surface_height; + translate_y = surface_width; + break; + case WL_OUTPUT_TRANSFORM_180: + angle = M_PI; + translate_x = surface_width; + translate_y = surface_height; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + angle = M_PI; + translate_x = 0; + translate_y = surface_height; + break; + case WL_OUTPUT_TRANSFORM_270: + angle = M_PI + M_PI_2; + translate_x = 0; + translate_y = surface_width; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + angle = M_PI + M_PI_2; + translate_x = 0; + translate_y = 0; + break; + } + + cairo_scale(cr, scale, scale); + cairo_translate(cr, translate_x, translate_y); + cairo_rotate(cr, angle); + cairo_transform(cr, &m); +} + +cairo_t * +widget_cairo_create(struct widget *widget) +{ + struct surface *surface = widget->surface; + cairo_surface_t *cairo_surface; + cairo_t *cr; + + cairo_surface = widget_get_cairo_surface(widget); + cr = cairo_create(cairo_surface); + + widget_cairo_update_transform(widget, cr); + + cairo_translate(cr, -surface->allocation.x, -surface->allocation.y); + + return cr; +} + +struct wl_surface * +widget_get_wl_surface(struct widget *widget) +{ + return widget->surface->surface; +} + +uint32_t +widget_get_last_time(struct widget *widget) +{ + return widget->surface->last_time; +} + +void +widget_input_region_add(struct widget *widget, const struct rectangle *rect) +{ + struct wl_compositor *comp = widget->window->display->compositor; + struct surface *surface = widget->surface; + + if (!surface->input_region) + surface->input_region = wl_compositor_create_region(comp); + + if (rect) { + wl_region_add(surface->input_region, + rect->x, rect->y, rect->width, rect->height); + } +} + +void +widget_set_resize_handler(struct widget *widget, + widget_resize_handler_t handler) +{ + widget->resize_handler = handler; +} + +void +widget_set_redraw_handler(struct widget *widget, + widget_redraw_handler_t handler) +{ + widget->redraw_handler = handler; +} + +void +widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler) +{ + widget->enter_handler = handler; +} + +void +widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler) +{ + widget->leave_handler = handler; +} + +void +widget_set_motion_handler(struct widget *widget, + widget_motion_handler_t handler) +{ + widget->motion_handler = handler; +} + +void +widget_set_button_handler(struct widget *widget, + widget_button_handler_t handler) +{ + widget->button_handler = handler; +} + +void +widget_set_touch_up_handler(struct widget *widget, + widget_touch_up_handler_t handler) +{ + widget->touch_up_handler = handler; +} + +void +widget_set_touch_down_handler(struct widget *widget, + widget_touch_down_handler_t handler) +{ + widget->touch_down_handler = handler; +} + +void +widget_set_touch_motion_handler(struct widget *widget, + widget_touch_motion_handler_t handler) +{ + widget->touch_motion_handler = handler; +} + +void +widget_set_touch_frame_handler(struct widget *widget, + widget_touch_frame_handler_t handler) +{ + widget->touch_frame_handler = handler; +} + +void +widget_set_touch_cancel_handler(struct widget *widget, + widget_touch_cancel_handler_t handler) +{ + widget->touch_cancel_handler = handler; +} + +void +widget_set_axis_handler(struct widget *widget, + widget_axis_handler_t handler) +{ + widget->axis_handler = handler; +} + +static void +window_schedule_redraw_task(struct window *window); + +void +widget_schedule_redraw(struct widget *widget) +{ + DBG_OBJ(widget->surface->surface, "widget %p\n", widget); + widget->surface->redraw_needed = 1; + window_schedule_redraw_task(widget->window); +} + +cairo_surface_t * +window_get_surface(struct window *window) +{ + cairo_surface_t *cairo_surface; + + cairo_surface = widget_get_cairo_surface(window->main_surface->widget); + + return cairo_surface_reference(cairo_surface); +} + +struct wl_surface * +window_get_wl_surface(struct window *window) +{ + return window->main_surface->surface; +} + +struct wl_shell_surface * +window_get_wl_shell_surface(struct window *window) +{ + return window->shell_surface; +} + +static void +tooltip_redraw_handler(struct widget *widget, void *data) +{ + cairo_t *cr; + const int32_t r = 3; + struct tooltip *tooltip = data; + int32_t width, height; + + cr = widget_cairo_create(widget); + cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); + cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); + cairo_paint(cr); + + width = widget->allocation.width; + height = widget->allocation.height; + rounded_rect(cr, 0, 0, width, height, r); + + cairo_set_operator(cr, CAIRO_OPERATOR_OVER); + cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8); + cairo_fill(cr); + + cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); + cairo_move_to(cr, 10, 16); + cairo_show_text(cr, tooltip->entry); + cairo_destroy(cr); +} + +static cairo_text_extents_t +get_text_extents(struct tooltip *tooltip) +{ + cairo_t *cr; + cairo_text_extents_t extents; + + /* Use the dummy_surface because tooltip's surface was not + * created yet, and parent does not have a valid surface + * outside repaint, either. + */ + cr = cairo_create(tooltip->window->display->dummy_surface); + cairo_text_extents(cr, tooltip->entry, &extents); + cairo_destroy(cr); + + return extents; +} + +static int +window_create_tooltip(struct tooltip *tooltip) +{ + struct widget *parent = tooltip->parent; + struct display *display = parent->window->display; + struct window *window; + const int offset_y = 27; + const int margin = 3; + cairo_text_extents_t extents; + + if (tooltip->widget) + return 0; + + window = window_create_transient(display, parent->window, tooltip->x, + tooltip->y + offset_y, + WL_SHELL_SURFACE_TRANSIENT_INACTIVE); + if (!window) + return -1; + + tooltip->window = window; + tooltip->widget = window_add_widget(tooltip->window, tooltip); + + extents = get_text_extents(tooltip); + widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler); + window_schedule_resize(window, extents.width + 20, 20 + margin * 2); + + return 0; +} + +void +widget_destroy_tooltip(struct widget *parent) +{ + struct tooltip *tooltip = parent->tooltip; + + parent->tooltip_count = 0; + if (!tooltip) + return; + + if (tooltip->widget) { + widget_destroy(tooltip->widget); + window_destroy(tooltip->window); + tooltip->widget = NULL; + tooltip->window = NULL; + } + + close(tooltip->tooltip_fd); + free(tooltip->entry); + free(tooltip); + parent->tooltip = NULL; +} + +static void +tooltip_func(struct task *task, uint32_t events) +{ + struct tooltip *tooltip = + container_of(task, struct tooltip, tooltip_task); + uint64_t exp; + + if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t)) + abort(); + window_create_tooltip(tooltip); +} + +#define TOOLTIP_TIMEOUT 500 +static int +tooltip_timer_reset(struct tooltip *tooltip) +{ + struct itimerspec its; + + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 0; + its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000; + its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000; + if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) { + fprintf(stderr, "could not set timerfd\n: %m"); + return -1; + } + + return 0; +} + +int +widget_set_tooltip(struct widget *parent, char *entry, float x, float y) +{ + struct tooltip *tooltip = parent->tooltip; + + parent->tooltip_count++; + if (tooltip) { + tooltip->x = x; + tooltip->y = y; + tooltip_timer_reset(tooltip); + return 0; + } + + /* the handler might be triggered too fast via input device motion, so + * we need this check here to make sure tooltip is fully initialized */ + if (parent->tooltip_count > 1) + return 0; + + tooltip = malloc(sizeof *tooltip); + if (!tooltip) + return -1; + + parent->tooltip = tooltip; + tooltip->parent = parent; + tooltip->widget = NULL; + tooltip->window = NULL; + tooltip->x = x; + tooltip->y = y; + tooltip->entry = strdup(entry); + tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC); + if (tooltip->tooltip_fd < 0) { + fprintf(stderr, "could not create timerfd\n: %m"); + return -1; + } + + tooltip->tooltip_task.run = tooltip_func; + display_watch_fd(parent->window->display, tooltip->tooltip_fd, + EPOLLIN, &tooltip->tooltip_task); + tooltip_timer_reset(tooltip); + + return 0; +} + +static void +workspace_manager_state(void *data, + struct workspace_manager *workspace_manager, + uint32_t current, + uint32_t count) +{ + struct display *display = data; + + display->workspace = current; + display->workspace_count = count; +} + +static const struct workspace_manager_listener workspace_manager_listener = { + workspace_manager_state +}; + +static void +frame_resize_handler(struct widget *widget, + int32_t width, int32_t height, void *data) +{ + struct frame *frame = data; + struct widget *child = frame->child; + struct rectangle allocation; + struct display *display = widget->window->display; + struct surface *surface = widget->surface; + struct frame_button * button; + struct theme *t = display->theme; + int x_l, x_r, y, w, h; + int decoration_width, decoration_height; + int opaque_margin, shadow_margin; + + switch (widget->window->type) { + case TYPE_FULLSCREEN: + decoration_width = 0; + decoration_height = 0; + + allocation.x = 0; + allocation.y = 0; + allocation.width = width; + allocation.height = height; + opaque_margin = 0; + + wl_list_for_each(button, &frame->buttons_list, link) + button->widget->opaque = 1; + break; + case TYPE_MAXIMIZED: + decoration_width = t->width * 2; + decoration_height = t->width + t->titlebar_height; + + allocation.x = t->width; + allocation.y = t->titlebar_height; + allocation.width = width - decoration_width; + allocation.height = height - decoration_height; + + opaque_margin = 0; + + wl_list_for_each(button, &frame->buttons_list, link) + button->widget->opaque = 0; + break; + default: + decoration_width = (t->width + t->margin) * 2; + decoration_height = t->width + + t->titlebar_height + t->margin * 2; + + allocation.x = t->width + t->margin; + allocation.y = t->titlebar_height + t->margin; + allocation.width = width - decoration_width; + allocation.height = height - decoration_height; + + opaque_margin = t->margin + t->frame_radius; + + wl_list_for_each(button, &frame->buttons_list, link) + button->widget->opaque = 0; + break; + } + + widget_set_allocation(child, allocation.x, allocation.y, + allocation.width, allocation.height); + + if (child->resize_handler) + child->resize_handler(child, + allocation.width, + allocation.height, + child->user_data); + + width = child->allocation.width + decoration_width; + height = child->allocation.height + decoration_height; + + shadow_margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin; + + surface->input_region = + wl_compositor_create_region(display->compositor); + if (widget->window->type != TYPE_FULLSCREEN) { + wl_region_add(surface->input_region, + shadow_margin, shadow_margin, + width - 2 * shadow_margin, + height - 2 * shadow_margin); + } else { + wl_region_add(surface->input_region, 0, 0, width, height); + } + + widget_set_allocation(widget, 0, 0, width, height); + + if (child->opaque) + wl_region_add(surface->opaque_region, + opaque_margin, opaque_margin, + widget->allocation.width - 2 * opaque_margin, + widget->allocation.height - 2 * opaque_margin); + + /* frame internal buttons */ + x_r = frame->widget->allocation.width - t->width - shadow_margin; + x_l = t->width + shadow_margin; + y = t->width + shadow_margin; + wl_list_for_each(button, &frame->buttons_list, link) { + const int button_padding = 4; + w = cairo_image_surface_get_width(button->icon); + h = cairo_image_surface_get_height(button->icon); + + if (button->decoration == FRAME_BUTTON_FANCY) + w += 10; + + if (button->align == FRAME_BUTTON_LEFT) { + widget_set_allocation(button->widget, + x_l, y , w + 1, h + 1); + x_l += w; + x_l += button_padding; + } else { + x_r -= w; + widget_set_allocation(button->widget, + x_r, y , w + 1, h + 1); + x_r -= button_padding; + } + } +} + +static int +frame_button_enter_handler(struct widget *widget, + struct input *input, float x, float y, void *data) +{ + struct frame_button *frame_button = data; + + widget_schedule_redraw(frame_button->widget); + frame_button->state = FRAME_BUTTON_OVER; + + return CURSOR_LEFT_PTR; +} + +static void +frame_button_leave_handler(struct widget *widget, struct input *input, void *data) +{ + struct frame_button *frame_button = data; + + widget_schedule_redraw(frame_button->widget); + frame_button->state = FRAME_BUTTON_DEFAULT; +} + +static void +frame_button_button_handler(struct widget *widget, + struct input *input, uint32_t time, + uint32_t button, + enum wl_pointer_button_state state, void *data) +{ + struct frame_button *frame_button = data; + struct window *window = widget->window; + int was_pressed = (frame_button->state == FRAME_BUTTON_ACTIVE); + + if (button != BTN_LEFT) + return; + + switch (state) { + case WL_POINTER_BUTTON_STATE_PRESSED: + frame_button->state = FRAME_BUTTON_ACTIVE; + widget_schedule_redraw(frame_button->widget); + + if (frame_button->type == FRAME_BUTTON_ICON) + window_show_frame_menu(window, input, time); + return; + case WL_POINTER_BUTTON_STATE_RELEASED: + frame_button->state = FRAME_BUTTON_DEFAULT; + widget_schedule_redraw(frame_button->widget); + break; + } + + if (!was_pressed) + return; + + switch (frame_button->type) { + case FRAME_BUTTON_CLOSE: + if (window->close_handler) + window->close_handler(window->parent, + window->user_data); + else + display_exit(window->display); + break; + case FRAME_BUTTON_MINIMIZE: + fprintf(stderr,"Minimize stub\n"); + break; + case FRAME_BUTTON_MAXIMIZE: + window_set_maximized(window, window->type != TYPE_MAXIMIZED); + break; + default: + /* Unknown operation */ + break; + } +} + +static void +frame_button_touch_down_handler(struct widget *widget, struct input *input, + uint32_t serial, uint32_t time, int32_t id, + float x, float y, void *data) +{ + struct frame_button *frame_button = data; + struct window *window = widget->window; + + switch (frame_button->type) { + case FRAME_BUTTON_CLOSE: + if (window->close_handler) + window->close_handler(window->parent, + window->user_data); + else + display_exit(window->display); + break; + case FRAME_BUTTON_MINIMIZE: + fprintf(stderr,"Minimize stub\n"); + break; + case FRAME_BUTTON_MAXIMIZE: + window_set_maximized(window, window->type != TYPE_MAXIMIZED); + break; + default: + /* Unknown operation */ + break; + } +} + + +static int +frame_button_motion_handler(struct widget *widget, + struct input *input, uint32_t time, + float x, float y, void *data) +{ + struct frame_button *frame_button = data; + enum frame_button_pointer previous_button_state = frame_button->state; + + /* only track state for a pressed button */ + if (input->grab != widget) + return CURSOR_LEFT_PTR; + + if (x > widget->allocation.x && + x < (widget->allocation.x + widget->allocation.width) && + y > widget->allocation.y && + y < (widget->allocation.y + widget->allocation.height)) { + frame_button->state = FRAME_BUTTON_ACTIVE; + } else { + frame_button->state = FRAME_BUTTON_DEFAULT; + } + + if (frame_button->state != previous_button_state) + widget_schedule_redraw(frame_button->widget); + + return CURSOR_LEFT_PTR; +} + +static void +frame_button_redraw_handler(struct widget *widget, void *data) +{ + struct frame_button *frame_button = data; + cairo_t *cr; + int width, height, x, y; + + x = widget->allocation.x; + y = widget->allocation.y; + width = widget->allocation.width; + height = widget->allocation.height; + + if (!width) + return; + if (!height) + return; + if (widget->opaque) + return; + + cr = widget_cairo_create(widget); + + if (frame_button->decoration == FRAME_BUTTON_FANCY) { + cairo_set_line_width(cr, 1); + + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_rectangle (cr, x, y, 25, 16); + + cairo_stroke_preserve(cr); + + switch (frame_button->state) { + case FRAME_BUTTON_DEFAULT: + cairo_set_source_rgb(cr, 0.88, 0.88, 0.88); + break; + case FRAME_BUTTON_OVER: + cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); + break; + case FRAME_BUTTON_ACTIVE: + cairo_set_source_rgb(cr, 0.7, 0.7, 0.7); + break; + } + + cairo_fill (cr); + + x += 4; + } + + cairo_set_source_surface(cr, frame_button->icon, x, y); + cairo_paint(cr); + + cairo_destroy(cr); +} + +static struct widget * +frame_button_create(struct frame *frame, void *data, enum frame_button_action type, + enum frame_button_align align, enum frame_button_decoration style) +{ + struct frame_button *frame_button; + const char *icon = data; + + frame_button = xzalloc (sizeof *frame_button); + frame_button->icon = cairo_image_surface_create_from_png(icon); + frame_button->widget = widget_add_widget(frame->widget, frame_button); + frame_button->frame = frame; + frame_button->type = type; + frame_button->align = align; + frame_button->decoration = style; + + wl_list_insert(frame->buttons_list.prev, &frame_button->link); + + widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler); + widget_set_enter_handler(frame_button->widget, frame_button_enter_handler); + widget_set_leave_handler(frame_button->widget, frame_button_leave_handler); + widget_set_touch_down_handler(frame_button->widget, frame_button_touch_down_handler); + widget_set_button_handler(frame_button->widget, frame_button_button_handler); + widget_set_motion_handler(frame_button->widget, frame_button_motion_handler); + return frame_button->widget; +} + +static void +frame_button_destroy(struct frame_button *frame_button) +{ + widget_destroy(frame_button->widget); + wl_list_remove(&frame_button->link); + cairo_surface_destroy(frame_button->icon); + free(frame_button); + + return; +} + +static void +frame_redraw_handler(struct widget *widget, void *data) +{ + cairo_t *cr; + struct window *window = widget->window; + struct theme *t = window->display->theme; + uint32_t flags = 0; + + if (window->type == TYPE_FULLSCREEN) + return; + + cr = widget_cairo_create(widget); + + if (window->focus_count) + flags |= THEME_FRAME_ACTIVE; + if (window->type == TYPE_MAXIMIZED) + flags |= THEME_FRAME_MAXIMIZED; + theme_render_frame(t, cr, widget->allocation.width, + widget->allocation.height, window->title, flags); + + cairo_destroy(cr); +} + +static int +frame_get_pointer_image_for_location(struct frame *frame, struct input *input) +{ + struct theme *t = frame->widget->window->display->theme; + struct window *window = frame->widget->window; + int location; + + if (window->type != TYPE_TOPLEVEL) + return CURSOR_LEFT_PTR; + + location = theme_get_location(t, input->sx, input->sy, + frame->widget->allocation.width, + frame->widget->allocation.height, + window->type == TYPE_MAXIMIZED ? + THEME_FRAME_MAXIMIZED : 0); + + switch (location) { + case THEME_LOCATION_RESIZING_TOP: + return CURSOR_TOP; + case THEME_LOCATION_RESIZING_BOTTOM: + return CURSOR_BOTTOM; + case THEME_LOCATION_RESIZING_LEFT: + return CURSOR_LEFT; + case THEME_LOCATION_RESIZING_RIGHT: + return CURSOR_RIGHT; + case THEME_LOCATION_RESIZING_TOP_LEFT: + return CURSOR_TOP_LEFT; + case THEME_LOCATION_RESIZING_TOP_RIGHT: + return CURSOR_TOP_RIGHT; + case THEME_LOCATION_RESIZING_BOTTOM_LEFT: + return CURSOR_BOTTOM_LEFT; + case THEME_LOCATION_RESIZING_BOTTOM_RIGHT: + return CURSOR_BOTTOM_RIGHT; + case THEME_LOCATION_EXTERIOR: + case THEME_LOCATION_TITLEBAR: + default: + return CURSOR_LEFT_PTR; + } +} + +static void +frame_menu_func(struct window *window, int index, void *data) +{ + struct display *display; + + switch (index) { + case 0: /* close */ + if (window->close_handler) + window->close_handler(window->parent, + window->user_data); + else + display_exit(window->display); + break; + case 1: /* move to workspace above */ + display = window->display; + if (display->workspace > 0) + workspace_manager_move_surface( + display->workspace_manager, + window->main_surface->surface, + display->workspace - 1); + break; + case 2: /* move to workspace below */ + display = window->display; + if (display->workspace < display->workspace_count - 1) + workspace_manager_move_surface( + display->workspace_manager, + window->main_surface->surface, + display->workspace + 1); + break; + case 3: /* fullscreen */ + /* we don't have a way to get out of fullscreen for now */ + if (window->fullscreen_handler) + window->fullscreen_handler(window, window->user_data); + break; + } +} + +void +window_show_frame_menu(struct window *window, + struct input *input, uint32_t time) +{ + int32_t x, y; + int count; + + static const char *entries[] = { + "Close", + "Move to workspace above", "Move to workspace below", + "Fullscreen" + }; + + if (window->fullscreen_handler) + count = ARRAY_LENGTH(entries); + else + count = ARRAY_LENGTH(entries) - 1; + + input_get_position(input, &x, &y); + window_show_menu(window->display, input, time, window, + x - 10, y - 10, frame_menu_func, entries, count); +} + +static int +frame_enter_handler(struct widget *widget, + struct input *input, float x, float y, void *data) +{ + return frame_get_pointer_image_for_location(data, input); +} + +static int +frame_motion_handler(struct widget *widget, + struct input *input, uint32_t time, + float x, float y, void *data) +{ + return frame_get_pointer_image_for_location(data, input); +} + +static void +frame_button_handler(struct widget *widget, + struct input *input, uint32_t time, + uint32_t button, enum wl_pointer_button_state state, + void *data) + +{ + struct frame *frame = data; + struct window *window = widget->window; + struct display *display = window->display; + int location; + + if (state != WL_POINTER_BUTTON_STATE_PRESSED) + return; + + location = theme_get_location(display->theme, input->sx, input->sy, + frame->widget->allocation.width, + frame->widget->allocation.height, + window->type == TYPE_MAXIMIZED ? + THEME_FRAME_MAXIMIZED : 0); + + if (window->display->shell && button == BTN_LEFT && + window->type == TYPE_TOPLEVEL) { + switch (location) { + case THEME_LOCATION_TITLEBAR: + if (!window->shell_surface) + break; + input_ungrab(input); + wl_shell_surface_move(window->shell_surface, + input_get_seat(input), + display->serial); + break; + case THEME_LOCATION_RESIZING_TOP: + case THEME_LOCATION_RESIZING_BOTTOM: + case THEME_LOCATION_RESIZING_LEFT: + case THEME_LOCATION_RESIZING_RIGHT: + case THEME_LOCATION_RESIZING_TOP_LEFT: + case THEME_LOCATION_RESIZING_TOP_RIGHT: + case THEME_LOCATION_RESIZING_BOTTOM_LEFT: + case THEME_LOCATION_RESIZING_BOTTOM_RIGHT: + if (!window->shell_surface) + break; + input_ungrab(input); + + window->resizing = 1; + wl_shell_surface_resize(window->shell_surface, + input_get_seat(input), + display->serial, location); + break; + } + } else if (button == BTN_RIGHT && + (window->type == TYPE_TOPLEVEL || + window->type == TYPE_MAXIMIZED)) { + window_show_frame_menu(window, input, time); + } +} + +static void +frame_touch_down_handler(struct widget *widget, struct input *input, + uint32_t serial, uint32_t time, int32_t id, + float x, float y, void *data) +{ + struct window *window = widget->window; + struct display *display = window->display; + + wl_shell_surface_move(window->shell_surface, + input_get_seat(input), + display->serial); +} + +struct widget * +frame_create(struct window *window, void *data) +{ + struct frame *frame; + + frame = xzalloc(sizeof *frame); + frame->widget = window_add_widget(window, frame); + frame->child = widget_add_widget(frame->widget, data); + + widget_set_redraw_handler(frame->widget, frame_redraw_handler); + widget_set_resize_handler(frame->widget, frame_resize_handler); + widget_set_enter_handler(frame->widget, frame_enter_handler); + widget_set_motion_handler(frame->widget, frame_motion_handler); + widget_set_button_handler(frame->widget, frame_button_handler); + widget_set_touch_down_handler(frame->widget, frame_touch_down_handler); + + /* Create empty list for frame buttons */ + wl_list_init(&frame->buttons_list); + + frame_button_create(frame, DATADIR "/weston/icon_window.png", + FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE); + + frame_button_create(frame, DATADIR "/weston/sign_close.png", + FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY); + + frame_button_create(frame, DATADIR "/weston/sign_maximize.png", + FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY); + + frame_button_create(frame, DATADIR "/weston/sign_minimize.png", + FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY); + + window->frame = frame; + + return frame->child; +} + +void +frame_set_child_size(struct widget *widget, int child_width, int child_height) +{ + struct display *display = widget->window->display; + struct theme *t = display->theme; + int decoration_width, decoration_height; + int width, height; + int margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin; + + if (widget->window->type != TYPE_FULLSCREEN) { + decoration_width = (t->width + margin) * 2; + decoration_height = t->width + + t->titlebar_height + margin * 2; + + width = child_width + decoration_width; + height = child_height + decoration_height; + } else { + width = child_width; + height = child_height; + } + + window_schedule_resize(widget->window, width, height); +} + +static void +frame_destroy(struct frame *frame) +{ + struct frame_button *button, *tmp; + + wl_list_for_each_safe(button, tmp, &frame->buttons_list, link) + frame_button_destroy(button); + + /* frame->child must be destroyed by the application */ + widget_destroy(frame->widget); + free(frame); +} + +static void +input_set_focus_widget(struct input *input, struct widget *focus, + float x, float y) +{ + struct widget *old, *widget; + int cursor; + + if (focus == input->focus_widget) + return; + + old = input->focus_widget; + if (old) { + widget = old; + if (input->grab) + widget = input->grab; + if (widget->leave_handler) + widget->leave_handler(old, input, widget->user_data); + input->focus_widget = NULL; + } + + if (focus) { + widget = focus; + if (input->grab) + widget = input->grab; + input->focus_widget = focus; + if (widget->enter_handler) + cursor = widget->enter_handler(focus, input, x, y, + widget->user_data); + else + cursor = widget->default_cursor; + + input_set_pointer_image(input, cursor); + } +} + +void +input_grab(struct input *input, struct widget *widget, uint32_t button) +{ + input->grab = widget; + input->grab_button = button; +} + +void +input_ungrab(struct input *input) +{ + struct widget *widget; + + input->grab = NULL; + if (input->pointer_focus) { + widget = window_find_widget(input->pointer_focus, + input->sx, input->sy); + input_set_focus_widget(input, widget, input->sx, input->sy); + } +} + +static void +input_remove_pointer_focus(struct input *input) +{ + struct window *window = input->pointer_focus; + + if (!window) + return; + + input_set_focus_widget(input, NULL, 0, 0); + + input->pointer_focus = NULL; + input->current_cursor = CURSOR_UNSET; +} + +static void +pointer_handle_enter(void *data, struct wl_pointer *pointer, + uint32_t serial, struct wl_surface *surface, + wl_fixed_t sx_w, wl_fixed_t sy_w) +{ + struct input *input = data; + struct window *window; + struct widget *widget; + float sx = wl_fixed_to_double(sx_w); + float sy = wl_fixed_to_double(sy_w); + + if (!surface) { + /* enter event for a window we've just destroyed */ + return; + } + + input->display->serial = serial; + input->pointer_enter_serial = serial; + input->pointer_focus = wl_surface_get_user_data(surface); + window = input->pointer_focus; + + if (window->resizing) { + window->resizing = 0; + /* Schedule a redraw to free the pool */ + window_schedule_redraw(window); + } + + input->sx = sx; + input->sy = sy; + + widget = window_find_widget(window, sx, sy); + input_set_focus_widget(input, widget, sx, sy); +} + +static void +pointer_handle_leave(void *data, struct wl_pointer *pointer, + uint32_t serial, struct wl_surface *surface) +{ + struct input *input = data; + + input->display->serial = serial; + input_remove_pointer_focus(input); +} + +static void +pointer_handle_motion(void *data, struct wl_pointer *pointer, + uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w) +{ + struct input *input = data; + struct window *window = input->pointer_focus; + struct widget *widget; + int cursor; + float sx = wl_fixed_to_double(sx_w); + float sy = wl_fixed_to_double(sy_w); + + input->sx = sx; + input->sy = sy; + + if (!window) + return; + + /* when making the window smaller - e.g. after a unmaximise we might + * still have a pending motion event that the compositor has picked + * based on the old surface dimensions + */ + if (sx > window->main_surface->allocation.width || + sy > window->main_surface->allocation.height) + return; + + if (!(input->grab && input->grab_button)) { + widget = window_find_widget(window, sx, sy); + input_set_focus_widget(input, widget, sx, sy); + } + + if (input->grab) + widget = input->grab; + else + widget = input->focus_widget; + if (widget) { + if (widget->motion_handler) + cursor = widget->motion_handler(input->focus_widget, + input, time, sx, sy, + widget->user_data); + else + cursor = widget->default_cursor; + } else + cursor = CURSOR_LEFT_PTR; + + input_set_pointer_image(input, cursor); +} + +static void +pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial, + uint32_t time, uint32_t button, uint32_t state_w) +{ + struct input *input = data; + struct widget *widget; + enum wl_pointer_button_state state = state_w; + + input->display->serial = serial; + if (input->focus_widget && input->grab == NULL && + state == WL_POINTER_BUTTON_STATE_PRESSED) + input_grab(input, input->focus_widget, button); + + widget = input->grab; + if (widget && widget->button_handler) + (*widget->button_handler)(widget, + input, time, + button, state, + input->grab->user_data); + + if (input->grab && input->grab_button == button && + state == WL_POINTER_BUTTON_STATE_RELEASED) + input_ungrab(input); +} + +static void +pointer_handle_axis(void *data, struct wl_pointer *pointer, + uint32_t time, uint32_t axis, wl_fixed_t value) +{ + struct input *input = data; + struct widget *widget; + + widget = input->focus_widget; + if (input->grab) + widget = input->grab; + if (widget && widget->axis_handler) + (*widget->axis_handler)(widget, + input, time, + axis, value, + widget->user_data); +} + +static const struct wl_pointer_listener pointer_listener = { + pointer_handle_enter, + pointer_handle_leave, + pointer_handle_motion, + pointer_handle_button, + pointer_handle_axis, +}; + +static void +input_remove_keyboard_focus(struct input *input) +{ + struct window *window = input->keyboard_focus; + struct itimerspec its; + + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 0; + its.it_value.tv_sec = 0; + its.it_value.tv_nsec = 0; + timerfd_settime(input->repeat_timer_fd, 0, &its, NULL); + + if (!window) + return; + + window->focus_count--; + if (window->keyboard_focus_handler) + (*window->keyboard_focus_handler)(window, NULL, + window->user_data); + + input->keyboard_focus = NULL; +} + +static void +keyboard_repeat_func(struct task *task, uint32_t events) +{ + struct input *input = + container_of(task, struct input, repeat_task); + struct window *window = input->keyboard_focus; + uint64_t exp; + + if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp) + /* If we change the timer between the fd becoming + * readable and getting here, there'll be nothing to + * read and we get EAGAIN. */ + return; + + if (window && window->key_handler) { + (*window->key_handler)(window, input, input->repeat_time, + input->repeat_key, input->repeat_sym, + WL_KEYBOARD_KEY_STATE_PRESSED, + window->user_data); + } +} + +static void +keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard, + uint32_t format, int fd, uint32_t size) +{ + struct input *input = data; + char *map_str; + + if (!data) { + close(fd); + return; + } + + if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) { + close(fd); + return; + } + + map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0); + if (map_str == MAP_FAILED) { + close(fd); + return; + } + + input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context, + map_str, + XKB_KEYMAP_FORMAT_TEXT_V1, + 0); + munmap(map_str, size); + close(fd); + + if (!input->xkb.keymap) { + fprintf(stderr, "failed to compile keymap\n"); + return; + } + + input->xkb.state = xkb_state_new(input->xkb.keymap); + if (!input->xkb.state) { + fprintf(stderr, "failed to create XKB state\n"); + xkb_map_unref(input->xkb.keymap); + input->xkb.keymap = NULL; + return; + } + + input->xkb.control_mask = + 1 << xkb_map_mod_get_index(input->xkb.keymap, "Control"); + input->xkb.alt_mask = + 1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1"); + input->xkb.shift_mask = + 1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift"); +} + +static void +keyboard_handle_enter(void *data, struct wl_keyboard *keyboard, + uint32_t serial, struct wl_surface *surface, + struct wl_array *keys) +{ + struct input *input = data; + struct window *window; + + input->display->serial = serial; + input->keyboard_focus = wl_surface_get_user_data(surface); + + window = input->keyboard_focus; + window->focus_count++; + if (window->keyboard_focus_handler) + (*window->keyboard_focus_handler)(window, + input, window->user_data); +} + +static void +keyboard_handle_leave(void *data, struct wl_keyboard *keyboard, + uint32_t serial, struct wl_surface *surface) +{ + struct input *input = data; + + input->display->serial = serial; + input_remove_keyboard_focus(input); +} + +static void +keyboard_handle_key(void *data, struct wl_keyboard *keyboard, + uint32_t serial, uint32_t time, uint32_t key, + uint32_t state_w) +{ + struct input *input = data; + struct window *window = input->keyboard_focus; + uint32_t code, num_syms; + enum wl_keyboard_key_state state = state_w; + const xkb_keysym_t *syms; + xkb_keysym_t sym; + struct itimerspec its; + + input->display->serial = serial; + code = key + 8; + if (!window || !input->xkb.state) + return; + + num_syms = xkb_key_get_syms(input->xkb.state, code, &syms); + + sym = XKB_KEY_NoSymbol; + if (num_syms == 1) + sym = syms[0]; + + if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) { + if (state == WL_KEYBOARD_KEY_STATE_PRESSED) + window_set_maximized(window, + window->type != TYPE_MAXIMIZED); + } else if (sym == XKB_KEY_F11 && + window->fullscreen_handler && + state == WL_KEYBOARD_KEY_STATE_PRESSED) { + window->fullscreen_handler(window, window->user_data); + } else if (sym == XKB_KEY_F4 && + input->modifiers == MOD_ALT_MASK && + state == WL_KEYBOARD_KEY_STATE_PRESSED) { + if (window->close_handler) + window->close_handler(window->parent, + window->user_data); + else + display_exit(window->display); + } else if (window->key_handler) { + (*window->key_handler)(window, input, time, key, + sym, state, window->user_data); + } + + if (state == WL_KEYBOARD_KEY_STATE_RELEASED && + key == input->repeat_key) { + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 0; + its.it_value.tv_sec = 0; + its.it_value.tv_nsec = 0; + timerfd_settime(input->repeat_timer_fd, 0, &its, NULL); + } else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) { + input->repeat_sym = sym; + input->repeat_key = key; + input->repeat_time = time; + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 25 * 1000 * 1000; + its.it_value.tv_sec = 0; + its.it_value.tv_nsec = 400 * 1000 * 1000; + timerfd_settime(input->repeat_timer_fd, 0, &its, NULL); + } +} + +static void +keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard, + uint32_t serial, uint32_t mods_depressed, + uint32_t mods_latched, uint32_t mods_locked, + uint32_t group) +{ + struct input *input = data; + xkb_mod_mask_t mask; + + /* If we're not using a keymap, then we don't handle PC-style modifiers */ + if (!input->xkb.keymap) + return; + + xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched, + mods_locked, 0, 0, group); + mask = xkb_state_serialize_mods(input->xkb.state, + XKB_STATE_DEPRESSED | + XKB_STATE_LATCHED); + input->modifiers = 0; + if (mask & input->xkb.control_mask) + input->modifiers |= MOD_CONTROL_MASK; + if (mask & input->xkb.alt_mask) + input->modifiers |= MOD_ALT_MASK; + if (mask & input->xkb.shift_mask) + input->modifiers |= MOD_SHIFT_MASK; +} + +static const struct wl_keyboard_listener keyboard_listener = { + keyboard_handle_keymap, + keyboard_handle_enter, + keyboard_handle_leave, + keyboard_handle_key, + keyboard_handle_modifiers, +}; + +static void +touch_handle_down(void *data, struct wl_touch *wl_touch, + uint32_t serial, uint32_t time, struct wl_surface *surface, + int32_t id, wl_fixed_t x_w, wl_fixed_t y_w) +{ + struct input *input = data; + struct widget *widget; + float sx = wl_fixed_to_double(x_w); + float sy = wl_fixed_to_double(y_w); + + input->display->serial = serial; + input->touch_focus = wl_surface_get_user_data(surface); + if (!input->touch_focus) { + DBG("Failed to find to touch focus for surface %p\n", surface); + return; + } + + widget = window_find_widget(input->touch_focus, + wl_fixed_to_double(x_w), + wl_fixed_to_double(y_w)); + if (widget) { + struct touch_point *tp = xmalloc(sizeof *tp); + if (tp) { + tp->id = id; + tp->widget = widget; + wl_list_insert(&input->touch_point_list, &tp->link); + + if (widget->touch_down_handler) + (*widget->touch_down_handler)(widget, input, + serial, time, id, + sx, sy, + widget->user_data); + } + } +} + +static void +touch_handle_up(void *data, struct wl_touch *wl_touch, + uint32_t serial, uint32_t time, int32_t id) +{ + struct input *input = data; + struct touch_point *tp, *tmp; + + if (!input->touch_focus) { + DBG("No touch focus found for touch up event!\n"); + return; + } + + wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) { + if (tp->id != id) + continue; + + if (tp->widget->touch_up_handler) + (*tp->widget->touch_up_handler)(tp->widget, input, serial, + time, id, + tp->widget->user_data); + + wl_list_remove(&tp->link); + free(tp); + + return; + } +} + +static void +touch_handle_motion(void *data, struct wl_touch *wl_touch, + uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w) +{ + struct input *input = data; + struct touch_point *tp; + float sx = wl_fixed_to_double(x_w); + float sy = wl_fixed_to_double(y_w); + + DBG("touch_handle_motion: %i %i\n", id, wl_list_length(&input->touch_point_list)); + + if (!input->touch_focus) { + DBG("No touch focus found for touch motion event!\n"); + return; + } + + wl_list_for_each(tp, &input->touch_point_list, link) { + if (tp->id != id) + continue; + + if (tp->widget->touch_motion_handler) + (*tp->widget->touch_motion_handler)(tp->widget, input, time, + id, sx, sy, + tp->widget->user_data); + return; + } +} + +static void +touch_handle_frame(void *data, struct wl_touch *wl_touch) +{ + struct input *input = data; + struct touch_point *tp, *tmp; + + DBG("touch_handle_frame\n"); + + if (!input->touch_focus) { + DBG("No touch focus found for touch frame event!\n"); + return; + } + + wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) { + if (tp->widget->touch_frame_handler) + (*tp->widget->touch_frame_handler)(tp->widget, input, + tp->widget->user_data); + + wl_list_remove(&tp->link); + free(tp); + } +} + +static void +touch_handle_cancel(void *data, struct wl_touch *wl_touch) +{ + struct input *input = data; + struct touch_point *tp, *tmp; + + DBG("touch_handle_cancel\n"); + + if (!input->touch_focus) { + DBG("No touch focus found for touch cancel event!\n"); + return; + } + + wl_list_for_each_safe(tp, tmp, &input->touch_point_list, link) { + if (tp->widget->touch_cancel_handler) + (*tp->widget->touch_cancel_handler)(tp->widget, input, + tp->widget->user_data); + + wl_list_remove(&tp->link); + free(tp); + } +} + +static const struct wl_touch_listener touch_listener = { + touch_handle_down, + touch_handle_up, + touch_handle_motion, + touch_handle_frame, + touch_handle_cancel, +}; + +static void +seat_handle_capabilities(void *data, struct wl_seat *seat, + enum wl_seat_capability caps) +{ + struct input *input = data; + + if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) { + input->pointer = wl_seat_get_pointer(seat); + wl_pointer_set_user_data(input->pointer, input); + wl_pointer_add_listener(input->pointer, &pointer_listener, + input); + } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) { + wl_pointer_destroy(input->pointer); + input->pointer = NULL; + } + + if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) { + input->keyboard = wl_seat_get_keyboard(seat); + wl_keyboard_set_user_data(input->keyboard, input); + wl_keyboard_add_listener(input->keyboard, &keyboard_listener, + input); + } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) { + wl_keyboard_destroy(input->keyboard); + input->keyboard = NULL; + } + + if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) { + input->touch = wl_seat_get_touch(seat); + wl_touch_set_user_data(input->touch, input); + wl_touch_add_listener(input->touch, &touch_listener, input); + } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) { + wl_touch_destroy(input->touch); + input->touch = NULL; + } +} + +static void +seat_handle_name(void *data, struct wl_seat *seat, + const char *name) +{ + +} + +static const struct wl_seat_listener seat_listener = { + seat_handle_capabilities, + seat_handle_name +}; + +void +input_get_position(struct input *input, int32_t *x, int32_t *y) +{ + *x = input->sx; + *y = input->sy; +} + +struct display * +input_get_display(struct input *input) +{ + return input->display; +} + +struct wl_seat * +input_get_seat(struct input *input) +{ + return input->seat; +} + +uint32_t +input_get_modifiers(struct input *input) +{ + return input->modifiers; +} + +struct widget * +input_get_focus_widget(struct input *input) +{ + return input->focus_widget; +} + +struct data_offer { + struct wl_data_offer *offer; + struct input *input; + struct wl_array types; + int refcount; + + struct task io_task; + int fd; + data_func_t func; + int32_t x, y; + void *user_data; +}; + +static void +data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type) +{ + struct data_offer *offer = data; + char **p; + + p = wl_array_add(&offer->types, sizeof *p); + *p = strdup(type); +} + +static const struct wl_data_offer_listener data_offer_listener = { + data_offer_offer, +}; + +static void +data_offer_destroy(struct data_offer *offer) +{ + char **p; + + offer->refcount--; + if (offer->refcount == 0) { + wl_data_offer_destroy(offer->offer); + for (p = offer->types.data; *p; p++) + free(*p); + wl_array_release(&offer->types); + free(offer); + } +} + +static void +data_device_data_offer(void *data, + struct wl_data_device *data_device, + struct wl_data_offer *_offer) +{ + struct data_offer *offer; + + offer = xmalloc(sizeof *offer); + + wl_array_init(&offer->types); + offer->refcount = 1; + offer->input = data; + offer->offer = _offer; + wl_data_offer_add_listener(offer->offer, + &data_offer_listener, offer); +} + +static void +data_device_enter(void *data, struct wl_data_device *data_device, + uint32_t serial, struct wl_surface *surface, + wl_fixed_t x_w, wl_fixed_t y_w, + struct wl_data_offer *offer) +{ + struct input *input = data; + struct window *window; + void *types_data; + float x = wl_fixed_to_double(x_w); + float y = wl_fixed_to_double(y_w); + char **p; + + input->pointer_enter_serial = serial; + window = wl_surface_get_user_data(surface); + input->pointer_focus = window; + + if (offer) { + input->drag_offer = wl_data_offer_get_user_data(offer); + + p = wl_array_add(&input->drag_offer->types, sizeof *p); + *p = NULL; + + types_data = input->drag_offer->types.data; + } else { + input->drag_offer = NULL; + types_data = NULL; + } + + window = input->pointer_focus; + if (window->data_handler) + window->data_handler(window, input, x, y, types_data, + window->user_data); +} + +static void +data_device_leave(void *data, struct wl_data_device *data_device) +{ + struct input *input = data; + + if (input->drag_offer) { + data_offer_destroy(input->drag_offer); + input->drag_offer = NULL; + } +} + +static void +data_device_motion(void *data, struct wl_data_device *data_device, + uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w) +{ + struct input *input = data; + struct window *window = input->pointer_focus; + float x = wl_fixed_to_double(x_w); + float y = wl_fixed_to_double(y_w); + void *types_data; + + input->sx = x; + input->sy = y; + + if (input->drag_offer) + types_data = input->drag_offer->types.data; + else + types_data = NULL; + + if (window->data_handler) + window->data_handler(window, input, x, y, types_data, + window->user_data); +} + +static void +data_device_drop(void *data, struct wl_data_device *data_device) +{ + struct input *input = data; + struct window *window = input->pointer_focus; + + if (window->drop_handler) + window->drop_handler(window, input, + input->sx, input->sy, window->user_data); +} + +static void +data_device_selection(void *data, + struct wl_data_device *wl_data_device, + struct wl_data_offer *offer) +{ + struct input *input = data; + char **p; + + if (input->selection_offer) + data_offer_destroy(input->selection_offer); + + if (offer) { + input->selection_offer = wl_data_offer_get_user_data(offer); + p = wl_array_add(&input->selection_offer->types, sizeof *p); + *p = NULL; + } else { + input->selection_offer = NULL; + } +} + +static const struct wl_data_device_listener data_device_listener = { + data_device_data_offer, + data_device_enter, + data_device_leave, + data_device_motion, + data_device_drop, + data_device_selection +}; + +static void +input_set_pointer_image_index(struct input *input, int index) +{ + struct wl_buffer *buffer; + struct wl_cursor *cursor; + struct wl_cursor_image *image; + + if (!input->pointer) + return; + + cursor = input->display->cursors[input->current_cursor]; + if (!cursor) + return; + + if (index >= (int) cursor->image_count) { + fprintf(stderr, "cursor index out of range\n"); + return; + } + + image = cursor->images[index]; + buffer = wl_cursor_image_get_buffer(image); + if (!buffer) + return; + + wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial, + input->pointer_surface, + image->hotspot_x, image->hotspot_y); + wl_surface_attach(input->pointer_surface, buffer, 0, 0); + wl_surface_damage(input->pointer_surface, 0, 0, + image->width, image->height); + wl_surface_commit(input->pointer_surface); +} + +static const struct wl_callback_listener pointer_surface_listener; + +static void +pointer_surface_frame_callback(void *data, struct wl_callback *callback, + uint32_t time) +{ + struct input *input = data; + struct wl_cursor *cursor; + int i; + + if (callback) { + assert(callback == input->cursor_frame_cb); + wl_callback_destroy(callback); + input->cursor_frame_cb = NULL; + } + + if (!input->pointer) + return; + + if (input->current_cursor == CURSOR_BLANK) { + wl_pointer_set_cursor(input->pointer, + input->pointer_enter_serial, + NULL, 0, 0); + return; + } + + if (input->current_cursor == CURSOR_UNSET) + return; + cursor = input->display->cursors[input->current_cursor]; + if (!cursor) + return; + + /* FIXME We don't have the current time on the first call so we set + * the animation start to the time of the first frame callback. */ + if (time == 0) + input->cursor_anim_start = 0; + else if (input->cursor_anim_start == 0) + input->cursor_anim_start = time; + + if (time == 0 || input->cursor_anim_start == 0) + i = 0; + else + i = wl_cursor_frame(cursor, time - input->cursor_anim_start); + + if (cursor->image_count > 1) { + input->cursor_frame_cb = + wl_surface_frame(input->pointer_surface); + wl_callback_add_listener(input->cursor_frame_cb, + &pointer_surface_listener, input); + } + + input_set_pointer_image_index(input, i); +} + +static const struct wl_callback_listener pointer_surface_listener = { + pointer_surface_frame_callback +}; + +void +input_set_pointer_image(struct input *input, int pointer) +{ + int force = 0; + + if (!input->pointer) + return; + + if (input->pointer_enter_serial > input->cursor_serial) + force = 1; + + if (!force && pointer == input->current_cursor) + return; + + input->current_cursor = pointer; + input->cursor_serial = input->pointer_enter_serial; + if (!input->cursor_frame_cb) + pointer_surface_frame_callback(input, NULL, 0); + else if (force) { + /* The current frame callback may be stuck if, for instance, + * the set cursor request was processed by the server after + * this client lost the focus. In this case the cursor surface + * might not be mapped and the frame callback wouldn't ever + * complete. Send a set_cursor and attach to try to map the + * cursor surface again so that the callback will finish */ + input_set_pointer_image_index(input, 0); + } +} + +struct wl_data_device * +input_get_data_device(struct input *input) +{ + return input->data_device; +} + +void +input_set_selection(struct input *input, + struct wl_data_source *source, uint32_t time) +{ + wl_data_device_set_selection(input->data_device, source, time); +} + +void +input_accept(struct input *input, const char *type) +{ + wl_data_offer_accept(input->drag_offer->offer, + input->pointer_enter_serial, type); +} + +static void +offer_io_func(struct task *task, uint32_t events) +{ + struct data_offer *offer = + container_of(task, struct data_offer, io_task); + unsigned int len; + char buffer[4096]; + + len = read(offer->fd, buffer, sizeof buffer); + offer->func(buffer, len, + offer->x, offer->y, offer->user_data); + + if (len == 0) { + close(offer->fd); + data_offer_destroy(offer); + } +} + +static void +data_offer_receive_data(struct data_offer *offer, const char *mime_type, + data_func_t func, void *user_data) +{ + int p[2]; + + if (pipe2(p, O_CLOEXEC) == -1) + return; + + wl_data_offer_receive(offer->offer, mime_type, p[1]); + close(p[1]); + + offer->io_task.run = offer_io_func; + offer->fd = p[0]; + offer->func = func; + offer->refcount++; + offer->user_data = user_data; + + display_watch_fd(offer->input->display, + offer->fd, EPOLLIN, &offer->io_task); +} + +void +input_receive_drag_data(struct input *input, const char *mime_type, + data_func_t func, void *data) +{ + data_offer_receive_data(input->drag_offer, mime_type, func, data); + input->drag_offer->x = input->sx; + input->drag_offer->y = input->sy; +} + +int +input_receive_drag_data_to_fd(struct input *input, + const char *mime_type, int fd) +{ + if (input->drag_offer) + wl_data_offer_receive(input->drag_offer->offer, mime_type, fd); + + return 0; +} + +int +input_receive_selection_data(struct input *input, const char *mime_type, + data_func_t func, void *data) +{ + char **p; + + if (input->selection_offer == NULL) + return -1; + + for (p = input->selection_offer->types.data; *p; p++) + if (strcmp(mime_type, *p) == 0) + break; + + if (*p == NULL) + return -1; + + data_offer_receive_data(input->selection_offer, + mime_type, func, data); + return 0; +} + +int +input_receive_selection_data_to_fd(struct input *input, + const char *mime_type, int fd) +{ + if (input->selection_offer) + wl_data_offer_receive(input->selection_offer->offer, + mime_type, fd); + + return 0; +} + +void +window_move(struct window *window, struct input *input, uint32_t serial) +{ + if (!window->shell_surface) + return; + + wl_shell_surface_move(window->shell_surface, input->seat, serial); +} + +void +window_touch_move(struct window *window, struct input *input, uint32_t serial) +{ + if (!window->shell_surface) + return; + + wl_shell_surface_move(window->shell_surface, input->seat, + window->display->serial); +} + +static void +surface_set_synchronized(struct surface *surface) +{ + if (!surface->subsurface) + return; + + if (surface->synchronized) + return; + + wl_subsurface_set_sync(surface->subsurface); + surface->synchronized = 1; +} + +static void +surface_set_synchronized_default(struct surface *surface) +{ + if (!surface->subsurface) + return; + + if (surface->synchronized == surface->synchronized_default) + return; + + if (surface->synchronized_default) + wl_subsurface_set_sync(surface->subsurface); + else + wl_subsurface_set_desync(surface->subsurface); + + surface->synchronized = surface->synchronized_default; +} + +static void +surface_resize(struct surface *surface) +{ + struct widget *widget = surface->widget; + struct wl_compositor *compositor = widget->window->display->compositor; + + if (surface->input_region) { + wl_region_destroy(surface->input_region); + surface->input_region = NULL; + } + + if (surface->opaque_region) + wl_region_destroy(surface->opaque_region); + + surface->opaque_region = wl_compositor_create_region(compositor); + + if (widget->resize_handler) + widget->resize_handler(widget, + widget->allocation.width, + widget->allocation.height, + widget->user_data); + + if (surface->subsurface && + (surface->allocation.x != widget->allocation.x || + surface->allocation.y != widget->allocation.y)) { + wl_subsurface_set_position(surface->subsurface, + widget->allocation.x, + widget->allocation.y); + } + if (surface->allocation.width != widget->allocation.width || + surface->allocation.height != widget->allocation.height) { + window_schedule_redraw(widget->window); + } + surface->allocation = widget->allocation; + + if (widget->opaque) + wl_region_add(surface->opaque_region, 0, 0, + widget->allocation.width, + widget->allocation.height); +} + +static void +hack_prevent_EGL_sub_surface_deadlock(struct window *window) +{ + /* + * This hack should be removed, when EGL respects + * eglSwapInterval(0). + * + * If this window has sub-surfaces, especially a free-running + * EGL-widget, we need to post the parent surface once with + * all the old state to guarantee, that the EGL-widget will + * receive its frame callback soon. Otherwise, a forced call + * to eglSwapBuffers may end up blocking, waiting for a frame + * event that will never come, because we will commit the parent + * surface with all new state only after eglSwapBuffers returns. + * + * This assumes, that: + * 1. When the EGL widget's resize hook is called, it pauses. + * 2. When the EGL widget's redraw hook is called, it forces a + * repaint and a call to eglSwapBuffers(), and maybe resumes. + * In a single threaded application condition 1 is a no-op. + * + * XXX: This should actually be after the surface_resize() calls, + * but cannot, because then it would commit the incomplete state + * accumulated from the widget resize hooks. + */ + if (window->subsurface_list.next != &window->main_surface->link || + window->subsurface_list.prev != &window->main_surface->link) + wl_surface_commit(window->main_surface->surface); +} + +static void +idle_resize(struct window *window) +{ + struct surface *surface; + + window->resize_needed = 0; + window->redraw_needed = 1; + + DBG("from %dx%d to %dx%d\n", + window->main_surface->server_allocation.width, + window->main_surface->server_allocation.height, + window->pending_allocation.width, + window->pending_allocation.height); + + hack_prevent_EGL_sub_surface_deadlock(window); + + widget_set_allocation(window->main_surface->widget, + window->pending_allocation.x, + window->pending_allocation.y, + window->pending_allocation.width, + window->pending_allocation.height); + + surface_resize(window->main_surface); + + /* The main surface is in the list, too. Main surface's + * resize_handler is responsible for calling widget_set_allocation() + * on all sub-surface root widgets, so they will be resized + * properly. + */ + wl_list_for_each(surface, &window->subsurface_list, link) { + if (surface == window->main_surface) + continue; + + surface_set_synchronized(surface); + surface_resize(surface); + } +} + +void +window_schedule_resize(struct window *window, int width, int height) +{ + /* We should probably get these numbers from the theme. */ + const int min_width = 200, min_height = 200; + + window->pending_allocation.x = 0; + window->pending_allocation.y = 0; + window->pending_allocation.width = width; + window->pending_allocation.height = height; + + if (window->min_allocation.width == 0) { + if (width < min_width && window->frame) + window->min_allocation.width = min_width; + else + window->min_allocation.width = width; + if (height < min_height && window->frame) + window->min_allocation.height = min_height; + else + window->min_allocation.height = height; + } + + if (window->pending_allocation.width < window->min_allocation.width) + window->pending_allocation.width = window->min_allocation.width; + if (window->pending_allocation.height < window->min_allocation.height) + window->pending_allocation.height = window->min_allocation.height; + + window->resize_needed = 1; + window_schedule_redraw(window); +} + +void +widget_schedule_resize(struct widget *widget, int32_t width, int32_t height) +{ + window_schedule_resize(widget->window, width, height); +} + +static void +handle_ping(void *data, struct wl_shell_surface *shell_surface, + uint32_t serial) +{ + wl_shell_surface_pong(shell_surface, serial); +} + +static void +handle_configure(void *data, struct wl_shell_surface *shell_surface, + uint32_t edges, int32_t width, int32_t height) +{ + struct window *window = data; + + window->resize_edges = edges; + window_schedule_resize(window, width, height); +} + +static void +menu_destroy(struct menu *menu) +{ + widget_destroy(menu->widget); + window_destroy(menu->window); + free(menu); +} + +static void +handle_popup_done(void *data, struct wl_shell_surface *shell_surface) +{ + struct window *window = data; + struct menu *menu = window->main_surface->widget->user_data; + + /* FIXME: Need more context in this event, at least the input + * device. Or just use wl_callback. And this really needs to + * be a window vfunc that the menu can set. And we need the + * time. */ + + input_ungrab(menu->input); + menu_destroy(menu); +} + +static const struct wl_shell_surface_listener shell_surface_listener = { + handle_ping, + handle_configure, + handle_popup_done +}; + +void +window_get_allocation(struct window *window, + struct rectangle *allocation) +{ + *allocation = window->main_surface->allocation; +} + +static void +widget_redraw(struct widget *widget) +{ + struct widget *child; + + if (widget->redraw_handler) + widget->redraw_handler(widget, widget->user_data); + wl_list_for_each(child, &widget->child_list, link) + widget_redraw(child); +} + +static void +frame_callback(void *data, struct wl_callback *callback, uint32_t time) +{ + struct surface *surface = data; + + assert(callback == surface->frame_cb); + DBG_OBJ(callback, "done\n"); + wl_callback_destroy(callback); + surface->frame_cb = NULL; + + surface->last_time = time; + + if (surface->redraw_needed || surface->window->redraw_needed) { + DBG_OBJ(surface->surface, "window_schedule_redraw_task\n"); + window_schedule_redraw_task(surface->window); + } +} + +static const struct wl_callback_listener listener = { + frame_callback +}; + +static void +surface_redraw(struct surface *surface) +{ + DBG_OBJ(surface->surface, "begin\n"); + + if (!surface->window->redraw_needed && !surface->redraw_needed) + return; + + /* Whole-window redraw forces a redraw even if the previous has + * not yet hit the screen. + */ + if (surface->frame_cb) { + if (!surface->window->redraw_needed) + return; + + DBG_OBJ(surface->frame_cb, "cancelled\n"); + wl_callback_destroy(surface->frame_cb); + } + + surface->frame_cb = wl_surface_frame(surface->surface); + wl_callback_add_listener(surface->frame_cb, &listener, surface); + DBG_OBJ(surface->frame_cb, "new\n"); + + surface->redraw_needed = 0; + DBG_OBJ(surface->surface, "-> widget_redraw\n"); + widget_redraw(surface->widget); + DBG_OBJ(surface->surface, "done\n"); +} + +static void +idle_redraw(struct task *task, uint32_t events) +{ + struct window *window = container_of(task, struct window, redraw_task); + struct surface *surface; + + DBG(" --------- \n"); + + wl_list_init(&window->redraw_task.link); + window->redraw_task_scheduled = 0; + + if (window->resize_needed) { + /* throttle resizing to the main surface display */ + if (window->main_surface->frame_cb) { + DBG_OBJ(window->main_surface->frame_cb, "pending\n"); + return; + } + + idle_resize(window); + } + + wl_list_for_each(surface, &window->subsurface_list, link) + surface_redraw(surface); + + window->redraw_needed = 0; + window_flush(window); + + wl_list_for_each(surface, &window->subsurface_list, link) + surface_set_synchronized_default(surface); +} + +static void +window_schedule_redraw_task(struct window *window) +{ + if (window->configure_requests) + return; + if (!window->redraw_task_scheduled) { + window->redraw_task.run = idle_redraw; + display_defer(window->display, &window->redraw_task); + window->redraw_task_scheduled = 1; + } +} + +void +window_schedule_redraw(struct window *window) +{ + struct surface *surface; + + DBG_OBJ(window->main_surface->surface, "window %p\n", window); + + wl_list_for_each(surface, &window->subsurface_list, link) + surface->redraw_needed = 1; + + window_schedule_redraw_task(window); +} + +int +window_is_fullscreen(struct window *window) +{ + return window->type == TYPE_FULLSCREEN; +} + +static void +configure_request_completed(void *data, struct wl_callback *callback, uint32_t time) +{ + struct window *window = data; + + wl_callback_destroy(callback); + window->configure_requests--; + + if (!window->configure_requests) + window_schedule_redraw(window); +} + +static struct wl_callback_listener configure_request_listener = { + configure_request_completed, +}; + +static void +window_defer_redraw_until_configure(struct window* window) +{ + struct wl_callback *callback; + + if (window->redraw_task_scheduled) { + wl_list_remove(&window->redraw_task.link); + window->redraw_task_scheduled = 0; + } + + callback = wl_display_sync(window->display->display); + wl_callback_add_listener(callback, &configure_request_listener, window); + window->configure_requests++; +} + +void +window_set_fullscreen(struct window *window, int fullscreen) +{ + if (!window->display->shell) + return; + + if ((window->type == TYPE_FULLSCREEN) == fullscreen) + return; + + if (fullscreen) { + window->saved_type = window->type; + if (window->type == TYPE_TOPLEVEL) { + window->saved_allocation = window->main_surface->allocation; + } + window->type = TYPE_FULLSCREEN; + wl_shell_surface_set_fullscreen(window->shell_surface, + window->fullscreen_method, + 0, NULL); + window_defer_redraw_until_configure (window); + } else { + if (window->saved_type == TYPE_MAXIMIZED) { + window_set_maximized(window, 1); + } else { + window->type = TYPE_TOPLEVEL; + wl_shell_surface_set_toplevel(window->shell_surface); + window_schedule_resize(window, + window->saved_allocation.width, + window->saved_allocation.height); + } + + } +} + +void +window_set_fullscreen_method(struct window *window, + enum wl_shell_surface_fullscreen_method method) +{ + window->fullscreen_method = method; +} + +int +window_is_maximized(struct window *window) +{ + return window->type == TYPE_MAXIMIZED; +} + +void +window_set_maximized(struct window *window, int maximized) +{ + if (!window->display->shell) + return; + + if ((window->type == TYPE_MAXIMIZED) == maximized) + return; + + if (window->type == TYPE_TOPLEVEL) { + window->saved_allocation = window->main_surface->allocation; + wl_shell_surface_set_maximized(window->shell_surface, NULL); + window->type = TYPE_MAXIMIZED; + window_defer_redraw_until_configure(window); + } else if (window->type == TYPE_FULLSCREEN) { + wl_shell_surface_set_maximized(window->shell_surface, NULL); + window->type = TYPE_MAXIMIZED; + window_defer_redraw_until_configure(window); + } else { + wl_shell_surface_set_toplevel(window->shell_surface); + window->type = TYPE_TOPLEVEL; + window_schedule_resize(window, + window->saved_allocation.width, + window->saved_allocation.height); + } +} + +void +window_set_user_data(struct window *window, void *data) +{ + window->user_data = data; +} + +void * +window_get_user_data(struct window *window) +{ + return window->user_data; +} + +void +window_set_key_handler(struct window *window, + window_key_handler_t handler) +{ + window->key_handler = handler; +} + +void +window_set_keyboard_focus_handler(struct window *window, + window_keyboard_focus_handler_t handler) +{ + window->keyboard_focus_handler = handler; +} + +void +window_set_data_handler(struct window *window, window_data_handler_t handler) +{ + window->data_handler = handler; +} + +void +window_set_drop_handler(struct window *window, window_drop_handler_t handler) +{ + window->drop_handler = handler; +} + +void +window_set_close_handler(struct window *window, + window_close_handler_t handler) +{ + window->close_handler = handler; +} + +void +window_set_fullscreen_handler(struct window *window, + window_fullscreen_handler_t handler) +{ + window->fullscreen_handler = handler; +} + +void +window_set_output_handler(struct window *window, + window_output_handler_t handler) +{ + window->output_handler = handler; +} + +void +window_set_title(struct window *window, const char *title) +{ + free(window->title); + window->title = strdup(title); + if (window->shell_surface) + wl_shell_surface_set_title(window->shell_surface, title); +} + +const char * +window_get_title(struct window *window) +{ + return window->title; +} + +void +window_set_text_cursor_position(struct window *window, int32_t x, int32_t y) +{ + struct text_cursor_position *text_cursor_position = + window->display->text_cursor_position; + + if (!text_cursor_position) + return; + + text_cursor_position_notify(text_cursor_position, + window->main_surface->surface, + wl_fixed_from_int(x), + wl_fixed_from_int(y)); +} + +void +window_damage(struct window *window, int32_t x, int32_t y, + int32_t width, int32_t height) +{ + wl_surface_damage(window->main_surface->surface, x, y, width, height); +} + +static void +surface_enter(void *data, + struct wl_surface *wl_surface, struct wl_output *wl_output) +{ + struct window *window = data; + struct output *output; + struct output *output_found = NULL; + struct window_output *window_output; + + wl_list_for_each(output, &window->display->output_list, link) { + if (output->output == wl_output) { + output_found = output; + break; + } + } + + if (!output_found) + return; + + window_output = xmalloc(sizeof *window_output); + window_output->output = output_found; + + wl_list_insert (&window->window_output_list, &window_output->link); + + if (window->output_handler) + window->output_handler(window, output_found, 1, + window->user_data); +} + +static void +surface_leave(void *data, + struct wl_surface *wl_surface, struct wl_output *output) +{ + struct window *window = data; + struct window_output *window_output; + struct window_output *window_output_found = NULL; + + wl_list_for_each(window_output, &window->window_output_list, link) { + if (window_output->output->output == output) { + window_output_found = window_output; + break; + } + } + + if (window_output_found) { + wl_list_remove(&window_output_found->link); + + if (window->output_handler) + window->output_handler(window, window_output->output, + 0, window->user_data); + + free(window_output_found); + } +} + +static const struct wl_surface_listener surface_listener = { + surface_enter, + surface_leave +}; + +static struct surface * +surface_create(struct window *window) +{ + struct display *display = window->display; + struct surface *surface; + + surface = xmalloc(sizeof *surface); + memset(surface, 0, sizeof *surface); + if (!surface) + return NULL; + + surface->window = window; + surface->surface = wl_compositor_create_surface(display->compositor); + surface->buffer_scale = 1; + wl_surface_add_listener(surface->surface, &surface_listener, window); + + wl_list_insert(&window->subsurface_list, &surface->link); + + return surface; +} + +static struct window * +window_create_internal(struct display *display, + struct window *parent, int type) +{ + struct window *window; + struct surface *surface; + + window = xzalloc(sizeof *window); + wl_list_init(&window->subsurface_list); + window->display = display; + window->parent = parent; + + surface = surface_create(window); + window->main_surface = surface; + + if (type != TYPE_CUSTOM && display->shell) { + window->shell_surface = + wl_shell_get_shell_surface(display->shell, + surface->surface); + fail_on_null(window->shell_surface); + } + + window->type = type; + window->fullscreen_method = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT; + window->configure_requests = 0; + window->preferred_format = WINDOW_PREFERRED_FORMAT_NONE; + + if (display->argb_device) +#ifdef HAVE_CAIRO_EGL + surface->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW; +#else + surface->buffer_type = WINDOW_BUFFER_TYPE_SHM; +#endif + else + surface->buffer_type = WINDOW_BUFFER_TYPE_SHM; + + wl_surface_set_user_data(surface->surface, window); + wl_list_insert(display->window_list.prev, &window->link); + wl_list_init(&window->redraw_task.link); + + if (window->shell_surface) { + wl_shell_surface_set_user_data(window->shell_surface, window); + wl_shell_surface_add_listener(window->shell_surface, + &shell_surface_listener, window); + } + + wl_list_init (&window->window_output_list); + + return window; +} + +struct window * +window_create(struct display *display) +{ + return window_create_internal(display, NULL, TYPE_NONE); +} + +struct window * +window_create_custom(struct display *display) +{ + return window_create_internal(display, NULL, TYPE_CUSTOM); +} + +struct window * +window_create_transient(struct display *display, struct window *parent, + int32_t x, int32_t y, uint32_t flags) +{ + struct window *window; + + window = window_create_internal(parent->display, + parent, TYPE_TRANSIENT); + + window->x = x; + window->y = y; + + if (display->shell) + wl_shell_surface_set_transient( + window->shell_surface, + window->parent->main_surface->surface, + window->x, window->y, flags); + + return window; +} + +static void +menu_set_item(struct menu *menu, int sy) +{ + int next; + + next = (sy - 8) / 20; + if (menu->current != next) { + menu->current = next; + widget_schedule_redraw(menu->widget); + } +} + +static int +menu_motion_handler(struct widget *widget, + struct input *input, uint32_t time, + float x, float y, void *data) +{ + struct menu *menu = data; + + if (widget == menu->widget) + menu_set_item(data, y); + + return CURSOR_LEFT_PTR; +} + +static int +menu_enter_handler(struct widget *widget, + struct input *input, float x, float y, void *data) +{ + struct menu *menu = data; + + if (widget == menu->widget) + menu_set_item(data, y); + + return CURSOR_LEFT_PTR; +} + +static void +menu_leave_handler(struct widget *widget, struct input *input, void *data) +{ + struct menu *menu = data; + + if (widget == menu->widget) + menu_set_item(data, -200); +} + +static void +menu_button_handler(struct widget *widget, + struct input *input, uint32_t time, + uint32_t button, enum wl_pointer_button_state state, + void *data) + +{ + struct menu *menu = data; + + if (state == WL_POINTER_BUTTON_STATE_RELEASED && + (menu->release_count > 0 || time - menu->time > 500)) { + /* Either relase after press-drag-release or + * click-motion-click. */ + menu->func(menu->window->parent, + menu->current, menu->window->parent->user_data); + input_ungrab(input); + menu_destroy(menu); + } else if (state == WL_POINTER_BUTTON_STATE_RELEASED) { + menu->release_count++; + } +} + +static void +menu_redraw_handler(struct widget *widget, void *data) +{ + cairo_t *cr; + const int32_t r = 3, margin = 3; + struct menu *menu = data; + int32_t width, height, i; + + cr = widget_cairo_create(widget); + cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); + cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); + cairo_paint(cr); + + width = widget->allocation.width; + height = widget->allocation.height; + rounded_rect(cr, 0, 0, width, height, r); + + cairo_set_operator(cr, CAIRO_OPERATOR_OVER); + cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8); + cairo_fill(cr); + + for (i = 0; i < menu->count; i++) { + if (i == menu->current) { + cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); + cairo_rectangle(cr, margin, i * 20 + margin, + width - 2 * margin, 20); + cairo_fill(cr); + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_move_to(cr, 10, i * 20 + 16); + cairo_show_text(cr, menu->entries[i]); + } else { + cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); + cairo_move_to(cr, 10, i * 20 + 16); + cairo_show_text(cr, menu->entries[i]); + } + } + + cairo_destroy(cr); +} + +void +window_show_menu(struct display *display, + struct input *input, uint32_t time, struct window *parent, + int32_t x, int32_t y, + menu_func_t func, const char **entries, int count) +{ + struct window *window; + struct menu *menu; + const int32_t margin = 3; + + menu = malloc(sizeof *menu); + if (!menu) + return; + + window = window_create_internal(parent->display, parent, TYPE_MENU); + if (!window) { + free(menu); + return; + } + + menu->window = window; + menu->widget = window_add_widget(menu->window, menu); + window_set_buffer_scale (menu->window, window_get_buffer_scale (parent)); + window_set_buffer_transform (menu->window, window_get_buffer_transform (parent)); + menu->entries = entries; + menu->count = count; + menu->release_count = 0; + menu->current = -1; + menu->time = time; + menu->func = func; + menu->input = input; + window->type = TYPE_MENU; + window->x = x; + window->y = y; + + input_ungrab(input); + wl_shell_surface_set_popup(window->shell_surface, input->seat, + display_get_serial(window->display), + window->parent->main_surface->surface, + window->x, window->y, 0); + + widget_set_redraw_handler(menu->widget, menu_redraw_handler); + widget_set_enter_handler(menu->widget, menu_enter_handler); + widget_set_leave_handler(menu->widget, menu_leave_handler); + widget_set_motion_handler(menu->widget, menu_motion_handler); + widget_set_button_handler(menu->widget, menu_button_handler); + + input_grab(input, menu->widget, 0); + window_schedule_resize(window, 200, count * 20 + margin * 2); +} + +void +window_set_buffer_type(struct window *window, enum window_buffer_type type) +{ + window->main_surface->buffer_type = type; +} + +void +window_set_preferred_format(struct window *window, + enum preferred_format format) +{ + window->preferred_format = format; +} + +struct widget * +window_add_subsurface(struct window *window, void *data, + enum subsurface_mode default_mode) +{ + struct widget *widget; + struct surface *surface; + struct wl_surface *parent; + struct wl_subcompositor *subcompo = window->display->subcompositor; + + surface = surface_create(window); + widget = widget_create(window, surface, data); + wl_list_init(&widget->link); + surface->widget = widget; + + parent = window->main_surface->surface; + surface->subsurface = wl_subcompositor_get_subsurface(subcompo, + surface->surface, + parent); + surface->synchronized = 1; + + switch (default_mode) { + case SUBSURFACE_SYNCHRONIZED: + surface->synchronized_default = 1; + break; + case SUBSURFACE_DESYNCHRONIZED: + surface->synchronized_default = 0; + break; + default: + assert(!"bad enum subsurface_mode"); + } + + return widget; +} + +static void +display_handle_geometry(void *data, + struct wl_output *wl_output, + int x, int y, + int physical_width, + int physical_height, + int subpixel, + const char *make, + const char *model, + int transform) +{ + struct output *output = data; + + output->allocation.x = x; + output->allocation.y = y; + output->transform = transform; +} + +static void +display_handle_done(void *data, + struct wl_output *wl_output) +{ +} + +static void +display_handle_scale(void *data, + struct wl_output *wl_output, + int32_t scale) +{ + struct output *output = data; + + output->scale = scale; +} + +static void +display_handle_mode(void *data, + struct wl_output *wl_output, + uint32_t flags, + int width, + int height, + int refresh) +{ + struct output *output = data; + struct display *display = output->display; + + if (flags & WL_OUTPUT_MODE_CURRENT) { + output->allocation.width = width; + output->allocation.height = height; + if (display->output_configure_handler) + (*display->output_configure_handler)( + output, display->user_data); + } +} + +static const struct wl_output_listener output_listener = { + display_handle_geometry, + display_handle_mode, + display_handle_done, + display_handle_scale +}; + +static void +display_add_output(struct display *d, uint32_t id) +{ + struct output *output; + + output = xzalloc(sizeof *output); + output->display = d; + output->scale = 1; + output->output = + wl_registry_bind(d->registry, id, &wl_output_interface, 2); + wl_list_insert(d->output_list.prev, &output->link); + + wl_output_add_listener(output->output, &output_listener, output); +} + +static void +output_destroy(struct output *output) +{ + if (output->destroy_handler) + (*output->destroy_handler)(output, output->user_data); + + wl_output_destroy(output->output); + wl_list_remove(&output->link); + free(output); +} + +void +display_set_global_handler(struct display *display, + display_global_handler_t handler) +{ + struct global *global; + + display->global_handler = handler; + if (!handler) + return; + + wl_list_for_each(global, &display->global_list, link) + display->global_handler(display, + global->name, global->interface, + global->version, display->user_data); +} + +void +display_set_output_configure_handler(struct display *display, + display_output_handler_t handler) +{ + struct output *output; + + display->output_configure_handler = handler; + if (!handler) + return; + + wl_list_for_each(output, &display->output_list, link) { + if (output->allocation.width == 0 && + output->allocation.height == 0) + continue; + + (*display->output_configure_handler)(output, + display->user_data); + } +} + +void +output_set_user_data(struct output *output, void *data) +{ + output->user_data = data; +} + +void * +output_get_user_data(struct output *output) +{ + return output->user_data; +} + +void +output_set_destroy_handler(struct output *output, + display_output_handler_t handler) +{ + output->destroy_handler = handler; + /* FIXME: implement this, once we have way to remove outputs */ +} + +void +output_get_allocation(struct output *output, struct rectangle *base) +{ + struct rectangle allocation = output->allocation; + + switch (output->transform) { + case WL_OUTPUT_TRANSFORM_90: + case WL_OUTPUT_TRANSFORM_270: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + /* Swap width and height */ + allocation.width = output->allocation.height; + allocation.height = output->allocation.width; + break; + } + + *base = allocation; +} + +struct wl_output * +output_get_wl_output(struct output *output) +{ + return output->output; +} + +enum wl_output_transform +output_get_transform(struct output *output) +{ + return output->transform; +} + +uint32_t +output_get_scale(struct output *output) +{ + return output->scale; +} + +static void +fini_xkb(struct input *input) +{ + xkb_state_unref(input->xkb.state); + xkb_map_unref(input->xkb.keymap); +} + +#define MAX(a,b) ((a) > (b) ? a : b) + +static void +display_add_input(struct display *d, uint32_t id) +{ + struct input *input; + + input = xzalloc(sizeof *input); + input->display = d; + input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface, + MAX(d->seat_version, 3)); + input->touch_focus = NULL; + input->pointer_focus = NULL; + input->keyboard_focus = NULL; + wl_list_init(&input->touch_point_list); + wl_list_insert(d->input_list.prev, &input->link); + + wl_seat_add_listener(input->seat, &seat_listener, input); + wl_seat_set_user_data(input->seat, input); + + input->data_device = + wl_data_device_manager_get_data_device(d->data_device_manager, + input->seat); + wl_data_device_add_listener(input->data_device, &data_device_listener, + input); + + input->pointer_surface = wl_compositor_create_surface(d->compositor); + + input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC, + TFD_CLOEXEC | TFD_NONBLOCK); + input->repeat_task.run = keyboard_repeat_func; + display_watch_fd(d, input->repeat_timer_fd, + EPOLLIN, &input->repeat_task); +} + +static void +input_destroy(struct input *input) +{ + input_remove_keyboard_focus(input); + input_remove_pointer_focus(input); + + if (input->drag_offer) + data_offer_destroy(input->drag_offer); + + if (input->selection_offer) + data_offer_destroy(input->selection_offer); + + wl_data_device_destroy(input->data_device); + + if (input->display->seat_version >= 3) { + if (input->pointer) + wl_pointer_release(input->pointer); + if (input->keyboard) + wl_keyboard_release(input->keyboard); + } + + fini_xkb(input); + + wl_surface_destroy(input->pointer_surface); + + wl_list_remove(&input->link); + wl_seat_destroy(input->seat); + close(input->repeat_timer_fd); + free(input); +} + +static void +init_workspace_manager(struct display *d, uint32_t id) +{ + d->workspace_manager = + wl_registry_bind(d->registry, id, + &workspace_manager_interface, 1); + if (d->workspace_manager != NULL) + workspace_manager_add_listener(d->workspace_manager, + &workspace_manager_listener, + d); +} + +static void +shm_format(void *data, struct wl_shm *wl_shm, uint32_t format) +{ + struct display *d = data; + + if (format == WL_SHM_FORMAT_RGB565) + d->has_rgb565 = 1; +} + +struct wl_shm_listener shm_listener = { + shm_format +}; + +static void +registry_handle_global(void *data, struct wl_registry *registry, uint32_t id, + const char *interface, uint32_t version) +{ + struct display *d = data; + struct global *global; + + global = xmalloc(sizeof *global); + global->name = id; + global->interface = strdup(interface); + global->version = version; + wl_list_insert(d->global_list.prev, &global->link); + + if (strcmp(interface, "wl_compositor") == 0) { + d->compositor = wl_registry_bind(registry, id, + &wl_compositor_interface, 3); + } else if (strcmp(interface, "wl_output") == 0) { + display_add_output(d, id); + } else if (strcmp(interface, "wl_seat") == 0) { + d->seat_version = version; + display_add_input(d, id); + } else if (strcmp(interface, "wl_shell") == 0) { + d->shell = wl_registry_bind(registry, + id, &wl_shell_interface, 1); + } else if (strcmp(interface, "wl_shm") == 0) { + d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1); + wl_shm_add_listener(d->shm, &shm_listener, d); + } else if (strcmp(interface, "wl_data_device_manager") == 0) { + d->data_device_manager = + wl_registry_bind(registry, id, + &wl_data_device_manager_interface, 1); + } else if (strcmp(interface, "text_cursor_position") == 0) { + d->text_cursor_position = + wl_registry_bind(registry, id, + &text_cursor_position_interface, 1); + } else if (strcmp(interface, "workspace_manager") == 0) { + init_workspace_manager(d, id); + } else if (strcmp(interface, "wl_subcompositor") == 0) { + d->subcompositor = + wl_registry_bind(registry, id, + &wl_subcompositor_interface, 1); + } + + if (d->global_handler) + d->global_handler(d, id, interface, version, d->user_data); +} + +static void +registry_handle_global_remove(void *data, struct wl_registry *registry, + uint32_t name) +{ + struct display *d = data; + struct global *global; + struct global *tmp; + + wl_list_for_each_safe(global, tmp, &d->global_list, link) { + if (global->name != name) + continue; + + /* XXX: Should destroy bound globals, and call + * the counterpart of display::global_handler + */ + wl_list_remove(&global->link); + free(global->interface); + free(global); + } +} + +void * +display_bind(struct display *display, uint32_t name, + const struct wl_interface *interface, uint32_t version) +{ + return wl_registry_bind(display->registry, name, interface, version); +} + +static const struct wl_registry_listener registry_listener = { + registry_handle_global, + registry_handle_global_remove +}; + +#ifdef HAVE_CAIRO_EGL +static int +init_egl(struct display *d) +{ + EGLint major, minor; + EGLint n; + +#ifdef USE_CAIRO_GLESV2 +# define GL_BIT EGL_OPENGL_ES2_BIT +#else +# define GL_BIT EGL_OPENGL_BIT +#endif + + static const EGLint argb_cfg_attribs[] = { + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_RED_SIZE, 1, + EGL_GREEN_SIZE, 1, + EGL_BLUE_SIZE, 1, + EGL_ALPHA_SIZE, 1, + EGL_DEPTH_SIZE, 1, + EGL_RENDERABLE_TYPE, GL_BIT, + EGL_NONE + }; + +#ifdef USE_CAIRO_GLESV2 + static const EGLint context_attribs[] = { + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE + }; + EGLint api = EGL_OPENGL_ES_API; +#else + EGLint *context_attribs = NULL; + EGLint api = EGL_OPENGL_API; +#endif + + d->dpy = eglGetDisplay(d->display); + if (!eglInitialize(d->dpy, &major, &minor)) { + fprintf(stderr, "failed to initialize EGL\n"); + return -1; + } + + if (!eglBindAPI(api)) { + fprintf(stderr, "failed to bind EGL client API\n"); + return -1; + } + + if (!eglChooseConfig(d->dpy, argb_cfg_attribs, + &d->argb_config, 1, &n) || n != 1) { + fprintf(stderr, "failed to choose argb EGL config\n"); + return -1; + } + + d->argb_ctx = eglCreateContext(d->dpy, d->argb_config, + EGL_NO_CONTEXT, context_attribs); + if (d->argb_ctx == NULL) { + fprintf(stderr, "failed to create EGL context\n"); + return -1; + } + + d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx); + if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) { + fprintf(stderr, "failed to get cairo EGL argb device\n"); + return -1; + } + + return 0; +} + +static void +fini_egl(struct display *display) +{ + cairo_device_destroy(display->argb_device); + + eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, + EGL_NO_CONTEXT); + + eglTerminate(display->dpy); + eglReleaseThread(); +} +#endif + +static void +init_dummy_surface(struct display *display) +{ + int len; + void *data; + + len = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, 1); + data = malloc(len); + display->dummy_surface = + cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32, + 1, 1, len); + display->dummy_surface_data = data; +} + +static void +handle_display_data(struct task *task, uint32_t events) +{ + struct display *display = + container_of(task, struct display, display_task); + struct epoll_event ep; + int ret; + + display->display_fd_events = events; + + if (events & EPOLLERR || events & EPOLLHUP) { + display_exit(display); + return; + } + + if (events & EPOLLIN) { + ret = wl_display_dispatch(display->display); + if (ret == -1) { + display_exit(display); + return; + } + } + + if (events & EPOLLOUT) { + ret = wl_display_flush(display->display); + if (ret == 0) { + ep.events = EPOLLIN | EPOLLERR | EPOLLHUP; + ep.data.ptr = &display->display_task; + epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD, + display->display_fd, &ep); + } else if (ret == -1 && errno != EAGAIN) { + display_exit(display); + return; + } + } +} + +static void +log_handler(const char *format, va_list args) +{ + vfprintf(stderr, format, args); +} + +struct display * +display_create(int *argc, char *argv[]) +{ + struct display *d; + + wl_log_set_handler_client(log_handler); + + d = zalloc(sizeof *d); + if (d == NULL) + return NULL; + + d->display = wl_display_connect(NULL); + if (d->display == NULL) { + fprintf(stderr, "failed to connect to Wayland display: %m\n"); + free(d); + return NULL; + } + + d->xkb_context = xkb_context_new(0); + if (d->xkb_context == NULL) { + fprintf(stderr, "Failed to create XKB context\n"); + free(d); + return NULL; + } + + d->epoll_fd = os_epoll_create_cloexec(); + d->display_fd = wl_display_get_fd(d->display); + d->display_task.run = handle_display_data; + display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP, + &d->display_task); + + wl_list_init(&d->deferred_list); + wl_list_init(&d->input_list); + wl_list_init(&d->output_list); + wl_list_init(&d->global_list); + + d->workspace = 0; + d->workspace_count = 1; + + d->registry = wl_display_get_registry(d->display); + wl_registry_add_listener(d->registry, ®istry_listener, d); + + if (wl_display_dispatch(d->display) < 0) { + fprintf(stderr, "Failed to process Wayland connection: %m\n"); + return NULL; + } + +#ifdef HAVE_CAIRO_EGL + if (init_egl(d) < 0) + fprintf(stderr, "EGL does not seem to work, " + "falling back to software rendering and wl_shm.\n"); +#endif + + create_cursors(d); + + d->theme = theme_create(); + + wl_list_init(&d->window_list); + + init_dummy_surface(d); + + return d; +} + +static void +display_destroy_outputs(struct display *display) +{ + struct output *tmp; + struct output *output; + + wl_list_for_each_safe(output, tmp, &display->output_list, link) + output_destroy(output); +} + +static void +display_destroy_inputs(struct display *display) +{ + struct input *tmp; + struct input *input; + + wl_list_for_each_safe(input, tmp, &display->input_list, link) + input_destroy(input); +} + +void +display_destroy(struct display *display) +{ + if (!wl_list_empty(&display->window_list)) + fprintf(stderr, "toytoolkit warning: %d windows exist.\n", + wl_list_length(&display->window_list)); + + if (!wl_list_empty(&display->deferred_list)) + fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n"); + + cairo_surface_destroy(display->dummy_surface); + free(display->dummy_surface_data); + + display_destroy_outputs(display); + display_destroy_inputs(display); + + xkb_context_unref(display->xkb_context); + + theme_destroy(display->theme); + destroy_cursors(display); + +#ifdef HAVE_CAIRO_EGL + if (display->argb_device) + fini_egl(display); +#endif + + if (display->subcompositor) + wl_subcompositor_destroy(display->subcompositor); + + if (display->shell) + wl_shell_destroy(display->shell); + + if (display->shm) + wl_shm_destroy(display->shm); + + if (display->data_device_manager) + wl_data_device_manager_destroy(display->data_device_manager); + + wl_compositor_destroy(display->compositor); + wl_registry_destroy(display->registry); + + close(display->epoll_fd); + + if (!(display->display_fd_events & EPOLLERR) && + !(display->display_fd_events & EPOLLHUP)) + wl_display_flush(display->display); + + wl_display_disconnect(display->display); + free(display); +} + +void +display_set_user_data(struct display *display, void *data) +{ + display->user_data = data; +} + +void * +display_get_user_data(struct display *display) +{ + return display->user_data; +} + +struct wl_display * +display_get_display(struct display *display) +{ + return display->display; +} + +int +display_has_subcompositor(struct display *display) +{ + if (display->subcompositor) + return 1; + + wl_display_roundtrip(display->display); + + return display->subcompositor != NULL; +} + +cairo_device_t * +display_get_cairo_device(struct display *display) +{ + return display->argb_device; +} + +struct output * +display_get_output(struct display *display) +{ + return container_of(display->output_list.next, struct output, link); +} + +struct wl_compositor * +display_get_compositor(struct display *display) +{ + return display->compositor; +} + +uint32_t +display_get_serial(struct display *display) +{ + return display->serial; +} + +EGLDisplay +display_get_egl_display(struct display *d) +{ + return d->dpy; +} + +struct wl_data_source * +display_create_data_source(struct display *display) +{ + return wl_data_device_manager_create_data_source(display->data_device_manager); +} + +EGLConfig +display_get_argb_egl_config(struct display *d) +{ + return d->argb_config; +} + +struct wl_shell * +display_get_shell(struct display *display) +{ + return display->shell; +} + +int +display_acquire_window_surface(struct display *display, + struct window *window, + EGLContext ctx) +{ + struct surface *surface = window->main_surface; + + if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW) + return -1; + + widget_get_cairo_surface(window->main_surface->widget); + return surface->toysurface->acquire(surface->toysurface, ctx); +} + +void +display_release_window_surface(struct display *display, + struct window *window) +{ + struct surface *surface = window->main_surface; + + if (surface->buffer_type != WINDOW_BUFFER_TYPE_EGL_WINDOW) + return; + + surface->toysurface->release(surface->toysurface); +} + +void +display_defer(struct display *display, struct task *task) +{ + wl_list_insert(&display->deferred_list, &task->link); +} + +void +display_watch_fd(struct display *display, + int fd, uint32_t events, struct task *task) +{ + struct epoll_event ep; + + ep.events = events; + ep.data.ptr = task; + epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep); +} + +void +display_unwatch_fd(struct display *display, int fd) +{ + epoll_ctl(display->epoll_fd, EPOLL_CTL_DEL, fd, NULL); +} + +void +display_run(struct display *display) +{ + struct task *task; + struct epoll_event ep[16]; + int i, count, ret; + + display->running = 1; + while (1) { + while (!wl_list_empty(&display->deferred_list)) { + task = container_of(display->deferred_list.prev, + struct task, link); + wl_list_remove(&task->link); + task->run(task, 0); + } + + wl_display_dispatch_pending(display->display); + + if (!display->running) + break; + + ret = wl_display_flush(display->display); + if (ret < 0 && errno == EAGAIN) { + ep[0].events = + EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP; + ep[0].data.ptr = &display->display_task; + + epoll_ctl(display->epoll_fd, EPOLL_CTL_MOD, + display->display_fd, &ep[0]); + } else if (ret < 0) { + break; + } + + count = epoll_wait(display->epoll_fd, + ep, ARRAY_LENGTH(ep), -1); + for (i = 0; i < count; i++) { + task = ep[i].data.ptr; + task->run(task, ep[i].events); + } + } +} + +void +display_exit(struct display *display) +{ + display->running = 0; +} + +void +keysym_modifiers_add(struct wl_array *modifiers_map, + const char *name) +{ + size_t len = strlen(name) + 1; + char *p; + + p = wl_array_add(modifiers_map, len); + + if (p == NULL) + return; + + strncpy(p, name, len); +} + +static xkb_mod_index_t +keysym_modifiers_get_index(struct wl_array *modifiers_map, + const char *name) +{ + xkb_mod_index_t index = 0; + char *p = modifiers_map->data; + + while ((const char *)p < (const char *)(modifiers_map->data + modifiers_map->size)) { + if (strcmp(p, name) == 0) + return index; + + index++; + p += strlen(p) + 1; + } + + return XKB_MOD_INVALID; +} + +xkb_mod_mask_t +keysym_modifiers_get_mask(struct wl_array *modifiers_map, + const char *name) +{ + xkb_mod_index_t index = keysym_modifiers_get_index(modifiers_map, name); + + if (index == XKB_MOD_INVALID) + return XKB_MOD_INVALID; + + return 1 << index; +} + +void * +fail_on_null(void *p) +{ + if (p == NULL) { + fprintf(stderr, "%s: out of memory\n", program_invocation_short_name); + exit(EXIT_FAILURE); + } + + return p; +} + +void * +xmalloc(size_t s) +{ + return fail_on_null(malloc(s)); +} + +void * +xzalloc(size_t s) +{ + return fail_on_null(zalloc(s)); +} + +char * +xstrdup(const char *s) +{ + return fail_on_null(strdup(s)); +} |