diff options
Diffstat (limited to 'src/zoom.c')
-rw-r--r-- | src/zoom.c | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/src/zoom.c b/src/zoom.c new file mode 100644 index 00000000..220b2b6e --- /dev/null +++ b/src/zoom.c @@ -0,0 +1,397 @@ +/* + * Copyright © 2012 Scott Moreau + * + * 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 <stdlib.h> + +#include "compositor.h" +#include "text-cursor-position-server-protocol.h" + +struct text_cursor_position { + struct weston_compositor *ec; + struct wl_global *global; + struct wl_listener destroy_listener; +}; + +static void +text_cursor_position_notify(struct wl_client *client, + struct wl_resource *resource, + struct wl_resource *surface_resource, + wl_fixed_t x, wl_fixed_t y) +{ + struct weston_surface *surface = + wl_resource_get_user_data(surface_resource); + + weston_text_cursor_position_notify(surface, x, y); +} + +struct text_cursor_position_interface text_cursor_position_implementation = { + text_cursor_position_notify +}; + +static void +bind_text_cursor_position(struct wl_client *client, + void *data, uint32_t version, uint32_t id) +{ + struct wl_resource *resource; + + resource = wl_resource_create(client, + &text_cursor_position_interface, 1, id); + if (resource) + wl_resource_set_implementation(resource, + &text_cursor_position_implementation, + data, NULL); +} + +static void +text_cursor_position_notifier_destroy(struct wl_listener *listener, void *data) +{ + struct text_cursor_position *text_cursor_position = + container_of(listener, struct text_cursor_position, destroy_listener); + + wl_global_destroy(text_cursor_position->global); + free(text_cursor_position); +} + +void +text_cursor_position_notifier_create(struct weston_compositor *ec) +{ + struct text_cursor_position *text_cursor_position; + + text_cursor_position = malloc(sizeof *text_cursor_position); + if (text_cursor_position == NULL) + return; + + text_cursor_position->ec = ec; + + text_cursor_position->global = + wl_global_create(ec->wl_display, + &text_cursor_position_interface, 1, + text_cursor_position, + bind_text_cursor_position); + + text_cursor_position->destroy_listener.notify = + text_cursor_position_notifier_destroy; + wl_signal_add(&ec->destroy_signal, &text_cursor_position->destroy_listener); +} + +WL_EXPORT void +weston_text_cursor_position_notify(struct weston_surface *surface, + wl_fixed_t cur_pos_x, + wl_fixed_t cur_pos_y) +{ + struct weston_output *output; + wl_fixed_t global_x, global_y; + + weston_surface_to_global_fixed(surface, cur_pos_x, cur_pos_y, + &global_x, &global_y); + + wl_list_for_each(output, &surface->compositor->output_list, link) + if (output->zoom.active && + pixman_region32_contains_point(&output->region, + wl_fixed_to_int(global_x), + wl_fixed_to_int(global_y), + NULL)) { + output->zoom.text_cursor.x = global_x; + output->zoom.text_cursor.y = global_y; + weston_output_update_zoom(output, ZOOM_FOCUS_TEXT); + } +} + +static void +weston_zoom_frame_z(struct weston_animation *animation, + struct weston_output *output, uint32_t msecs) +{ + if (animation->frame_counter <= 1) + output->zoom.spring_z.timestamp = msecs; + + weston_spring_update(&output->zoom.spring_z, msecs); + + if (output->zoom.spring_z.current > output->zoom.max_level) + output->zoom.spring_z.current = output->zoom.max_level; + else if (output->zoom.spring_z.current < 0.0) + output->zoom.spring_z.current = 0.0; + + if (weston_spring_done(&output->zoom.spring_z)) { + if (output->zoom.active && output->zoom.level <= 0.0) { + output->zoom.active = 0; + output->disable_planes--; + } + output->zoom.spring_z.current = output->zoom.level; + wl_list_remove(&animation->link); + wl_list_init(&animation->link); + } + + output->dirty = 1; + weston_output_damage(output); +} + +static struct weston_seat * +weston_zoom_pick_seat(struct weston_compositor *compositor) +{ + return container_of(compositor->seat_list.next, + struct weston_seat, link); +} + + +static void +weston_zoom_frame_xy(struct weston_animation *animation, + struct weston_output *output, uint32_t msecs) +{ + struct weston_seat *seat = weston_zoom_pick_seat(output->compositor); + wl_fixed_t x, y; + + if (animation->frame_counter <= 1) + output->zoom.spring_xy.timestamp = msecs; + + weston_spring_update(&output->zoom.spring_xy, msecs); + + x = output->zoom.from.x - ((output->zoom.from.x - output->zoom.to.x) * + output->zoom.spring_xy.current); + y = output->zoom.from.y - ((output->zoom.from.y - output->zoom.to.y) * + output->zoom.spring_xy.current); + + output->zoom.current.x = x; + output->zoom.current.y = y; + + if (weston_spring_done(&output->zoom.spring_xy)) { + output->zoom.spring_xy.current = output->zoom.spring_xy.target; + output->zoom.current.x = + output->zoom.type == ZOOM_FOCUS_POINTER ? + seat->pointer->x : output->zoom.text_cursor.x; + output->zoom.current.y = + output->zoom.type == ZOOM_FOCUS_POINTER ? + seat->pointer->y : output->zoom.text_cursor.y; + wl_list_remove(&animation->link); + wl_list_init(&animation->link); + } + + output->dirty = 1; + weston_output_damage(output); +} + +static void +zoom_area_center_from_pointer(struct weston_output *output, + wl_fixed_t *x, wl_fixed_t *y) +{ + float level = output->zoom.spring_z.current; + wl_fixed_t offset_x = wl_fixed_from_int(output->x); + wl_fixed_t offset_y = wl_fixed_from_int(output->y); + wl_fixed_t w = wl_fixed_from_int(output->width); + wl_fixed_t h = wl_fixed_from_int(output->height); + + *x -= ((((*x - offset_x) / (float) w) - 0.5) * (w * (1.0 - level))); + *y -= ((((*y - offset_y) / (float) h) - 0.5) * (h * (1.0 - level))); +} + +static void +weston_zoom_apply_output_transform(struct weston_output *output, + float *x, float *y) +{ + float tx, ty; + + switch(output->transform) { + case WL_OUTPUT_TRANSFORM_NORMAL: + default: + return; + case WL_OUTPUT_TRANSFORM_90: + tx = -*y; + ty = *x; + break; + case WL_OUTPUT_TRANSFORM_180: + tx = -*x; + ty = -*y; + break; + case WL_OUTPUT_TRANSFORM_270: + tx = *y; + ty = -*x; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED: + tx = -*x; + ty = *y; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + tx = -*y; + ty = -*x; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + tx = *x; + ty = -*y; + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + tx = *y; + ty = *x; + break; + } + + *x = tx; + *y = ty; +} + +static void +weston_output_update_zoom_transform(struct weston_output *output) +{ + uint32_t type = output->zoom.type; + float global_x, global_y; + wl_fixed_t x = output->zoom.current.x; + wl_fixed_t y = output->zoom.current.y; + float trans_min, trans_max; + float ratio, level; + + level = output->zoom.spring_z.current; + ratio = 1 / level; + + if (!output->zoom.active || level > output->zoom.max_level || + level == 0.0f) + return; + + if (type == ZOOM_FOCUS_POINTER && + wl_list_empty(&output->zoom.animation_xy.link)) + zoom_area_center_from_pointer(output, &x, &y); + + global_x = wl_fixed_to_double(x); + global_y = wl_fixed_to_double(y); + + output->zoom.trans_x = + ((((global_x - output->x) / output->width) * + (level * 2)) - level) * ratio; + output->zoom.trans_y = + ((((global_y - output->y) / output->height) * + (level * 2)) - level) * ratio; + + weston_zoom_apply_output_transform(output, &output->zoom.trans_x, + &output->zoom.trans_y); + + trans_max = level * 2 - level; + trans_min = -trans_max; + + /* Clip zoom area to output */ + if (output->zoom.trans_x > trans_max) + output->zoom.trans_x = trans_max; + else if (output->zoom.trans_x < trans_min) + output->zoom.trans_x = trans_min; + if (output->zoom.trans_y > trans_max) + output->zoom.trans_y = trans_max; + else if (output->zoom.trans_y < trans_min) + output->zoom.trans_y = trans_min; +} + +static void +weston_zoom_transition(struct weston_output *output, uint32_t type, + wl_fixed_t x, wl_fixed_t y) +{ + if (output->zoom.type != type) { + /* Set from/to points and start animation */ + output->zoom.spring_xy.current = 0.0; + output->zoom.spring_xy.previous = 0.0; + output->zoom.spring_xy.target = 1.0; + + if (wl_list_empty(&output->zoom.animation_xy.link)) { + output->zoom.animation_xy.frame_counter = 0; + wl_list_insert(output->animation_list.prev, + &output->zoom.animation_xy.link); + + output->zoom.from.x = (type == ZOOM_FOCUS_TEXT) ? + x : output->zoom.text_cursor.x; + output->zoom.from.y = (type == ZOOM_FOCUS_TEXT) ? + y : output->zoom.text_cursor.y; + } else { + output->zoom.from.x = output->zoom.current.x; + output->zoom.from.y = output->zoom.current.y; + } + + output->zoom.to.x = (type == ZOOM_FOCUS_POINTER) ? + x : output->zoom.text_cursor.x; + output->zoom.to.y = (type == ZOOM_FOCUS_POINTER) ? + y : output->zoom.text_cursor.y; + output->zoom.current.x = output->zoom.from.x; + output->zoom.current.y = output->zoom.from.y; + + output->zoom.type = type; + } + + if (output->zoom.level != output->zoom.spring_z.current) { + output->zoom.spring_z.target = output->zoom.level; + if (wl_list_empty(&output->zoom.animation_z.link)) { + output->zoom.animation_z.frame_counter = 0; + wl_list_insert(output->animation_list.prev, + &output->zoom.animation_z.link); + } + } + + output->dirty = 1; + weston_output_damage(output); +} + +WL_EXPORT void +weston_output_update_zoom(struct weston_output *output, uint32_t type) +{ + struct weston_seat *seat = weston_zoom_pick_seat(output->compositor); + wl_fixed_t x = seat->pointer->x; + wl_fixed_t y = seat->pointer->y; + + zoom_area_center_from_pointer(output, &x, &y); + + if (type == ZOOM_FOCUS_POINTER) { + if (wl_list_empty(&output->zoom.animation_xy.link)) { + output->zoom.current.x = seat->pointer->x; + output->zoom.current.y = seat->pointer->y; + } else { + output->zoom.to.x = x; + output->zoom.to.y = y; + } + } + + if (type == ZOOM_FOCUS_TEXT) { + if (wl_list_empty(&output->zoom.animation_xy.link)) { + output->zoom.current.x = output->zoom.text_cursor.x; + output->zoom.current.y = output->zoom.text_cursor.y; + } else { + output->zoom.to.x = output->zoom.text_cursor.x; + output->zoom.to.y = output->zoom.text_cursor.y; + } + } + + weston_zoom_transition(output, type, x, y); + weston_output_update_zoom_transform(output); +} + +WL_EXPORT void +weston_output_init_zoom(struct weston_output *output) +{ + output->zoom.active = 0; + output->zoom.increment = 0.07; + output->zoom.max_level = 0.95; + output->zoom.level = 0.0; + output->zoom.trans_x = 0.0; + output->zoom.trans_y = 0.0; + output->zoom.type = ZOOM_FOCUS_POINTER; + weston_spring_init(&output->zoom.spring_z, 250.0, 0.0, 0.0); + output->zoom.spring_z.friction = 1000; + output->zoom.animation_z.frame = weston_zoom_frame_z; + wl_list_init(&output->zoom.animation_z.link); + weston_spring_init(&output->zoom.spring_xy, 250.0, 0.0, 0.0); + output->zoom.spring_xy.friction = 1000; + output->zoom.animation_xy.frame = weston_zoom_frame_xy; + wl_list_init(&output->zoom.animation_xy.link); +} |