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+/*
+ * Copyright © 2008 Kristian Høgsberg
+ * Copyright © 2009 Chris Wilson
+ *
+ * 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 <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <math.h>
+#include <time.h>
+#include <cairo.h>
+#include <glib.h>
+#include <gio/gio.h>
+#include <linux/input.h>
+
+#include <glib/poppler-document.h>
+#include <glib/poppler-page.h>
+
+#include <wayland-client.h>
+
+#include "window.h"
+
+struct view {
+ struct window *window;
+ struct widget *widget;
+ struct display *display;
+
+ PopplerDocument *document;
+ int page;
+ int fullscreen;
+ int *view_counter;
+};
+
+static void
+redraw_handler(struct widget *widget, void *data)
+{
+ struct view *view = data;
+
+ struct rectangle allocation;
+ cairo_surface_t *surface;
+ cairo_t *cr;
+ PopplerPage *page;
+ double width, height, doc_aspect, window_aspect, scale;
+
+ widget_get_allocation(view->widget, &allocation);
+
+ surface = window_get_surface(view->window);
+
+ cr = cairo_create(surface);
+ cairo_rectangle(cr, allocation.x, allocation.y,
+ allocation.width, allocation.height);
+ cairo_clip(cr);
+
+ cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
+ cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint(cr);
+
+ if(!view->document) {
+ cairo_destroy(cr);
+ cairo_surface_destroy(surface);
+ return;
+ }
+
+ page = poppler_document_get_page(view->document, view->page);
+ poppler_page_get_size(page, &width, &height);
+ doc_aspect = width / height;
+ window_aspect = (double) allocation.width / allocation.height;
+ if (doc_aspect < window_aspect)
+ scale = allocation.height / height;
+ else
+ scale = allocation.width / width;
+ cairo_translate(cr, allocation.x, allocation.y);
+ cairo_scale(cr, scale, scale);
+ cairo_translate(cr,
+ (allocation.width - width * scale) / 2 / scale,
+ (allocation.height - height * scale) / 2 / scale);
+ cairo_rectangle(cr, 0, 0, width, height);
+ cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+ cairo_set_source_rgb(cr, 1, 1, 1);
+ cairo_fill(cr);
+ poppler_page_render(page, cr);
+ cairo_destroy(cr);
+ cairo_surface_destroy(surface);
+ g_object_unref(G_OBJECT(page));
+}
+
+static void
+resize_handler(struct widget *widget,
+ int32_t width, int32_t height, void *data)
+{
+ struct view *view = data;
+
+ widget_set_size(view->widget, width, height);
+}
+
+static void
+view_page_up(struct view *view)
+{
+ if(view->page <= 0)
+ return;
+
+ view->page--;
+ window_schedule_redraw(view->window);
+}
+
+static void
+view_page_down(struct view *view)
+{
+ if(!view->document ||
+ view->page >= poppler_document_get_n_pages(view->document) - 1) {
+ return;
+ }
+
+ view->page++;
+ window_schedule_redraw(view->window);
+}
+
+static void
+button_handler(struct widget *widget, struct input *input, uint32_t time,
+ uint32_t button, enum wl_pointer_button_state state,
+ void *data)
+{
+ struct view *view = data;
+
+ if (state == WL_POINTER_BUTTON_STATE_RELEASED)
+ return;
+
+ switch(button) {
+ case 275:
+ view_page_up(view);
+ break;
+ case 276:
+ view_page_down(view);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+fullscreen_handler(struct window *window, void *data)
+{
+ struct view *view = data;
+
+ view->fullscreen ^= 1;
+ window_set_fullscreen(window, view->fullscreen);
+}
+
+static void
+close_handler(struct window *window, void *data)
+{
+ struct view *view = data;
+
+ *view->view_counter -= 1;
+ if (*view->view_counter == 0)
+ display_exit(view->display);
+
+ widget_destroy(view->widget);
+ window_destroy(view->window);
+ if (view->document)
+ g_object_unref(view->document);
+
+ free(view);
+}
+
+static void
+key_handler(struct window *window, struct input *input, uint32_t time,
+ uint32_t key, uint32_t unicode,
+ enum wl_keyboard_key_state state, void *data)
+{
+ struct view *view = data;
+
+ if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
+ return;
+
+ switch (key) {
+ case KEY_SPACE:
+ case KEY_PAGEDOWN:
+ case KEY_RIGHT:
+ case KEY_DOWN:
+ view_page_down(view);
+ break;
+ case KEY_BACKSPACE:
+ case KEY_PAGEUP:
+ case KEY_LEFT:
+ case KEY_UP:
+ view_page_up(view);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+keyboard_focus_handler(struct window *window,
+ struct input *device, void *data)
+{
+ struct view *view = data;
+ window_schedule_redraw(view->window);
+}
+
+static struct view *
+view_create(struct display *display,
+ uint32_t key, const char *filename, int fullscreen, int *view_counter)
+{
+ struct view *view;
+ gchar *basename;
+ gchar *title;
+ GFile *file = NULL;
+ GError *error = NULL;
+
+ view = zalloc(sizeof *view);
+ if (view == NULL)
+ return view;
+
+ file = g_file_new_for_commandline_arg(filename);
+ basename = g_file_get_basename(file);
+ if(!basename) {
+ title = g_strdup("Wayland View");
+ } else {
+ title = g_strdup_printf("Wayland View - %s", basename);
+ g_free(basename);
+ }
+
+ view->document = poppler_document_new_from_file(g_file_get_uri(file),
+ NULL, &error);
+
+ if(error) {
+ title = g_strdup("File not found");
+ }
+
+ view->window = window_create(display);
+ view->widget = frame_create(view->window, view);
+ window_set_title(view->window, title);
+ g_free(title);
+ view->display = display;
+
+ window_set_user_data(view->window, view);
+ window_set_key_handler(view->window, key_handler);
+ window_set_keyboard_focus_handler(view->window,
+ keyboard_focus_handler);
+ window_set_fullscreen_handler(view->window, fullscreen_handler);
+ window_set_close_handler(view->window, close_handler);
+
+ widget_set_button_handler(view->widget, button_handler);
+ widget_set_resize_handler(view->widget, resize_handler);
+ widget_set_redraw_handler(view->widget, redraw_handler);
+
+ view->page = 0;
+
+ view->fullscreen = fullscreen;
+ window_set_fullscreen(view->window, view->fullscreen);
+
+ window_schedule_resize(view->window, 500, 400);
+ view->view_counter = view_counter;
+ *view_counter += 1;
+
+ return view;
+}
+
+static int option_fullscreen;
+
+static const struct weston_option view_options[] = {
+ { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &option_fullscreen },
+};
+
+int
+main(int argc, char *argv[])
+{
+ struct display *d;
+ int i;
+ int view_counter = 0;
+
+#if !GLIB_CHECK_VERSION(2, 35, 0)
+ g_type_init();
+#endif
+
+ parse_options(view_options, ARRAY_LENGTH(view_options), &argc, argv);
+
+ d = display_create(&argc, argv);
+ if (d == NULL) {
+ fprintf(stderr, "failed to create display: %m\n");
+ return -1;
+ }
+
+ for (i = 1; i < argc; i++)
+ view_create (d, i, argv[i], option_fullscreen, &view_counter);
+
+ if (view_counter > 0)
+ display_run(d);
+
+ return 0;
+}
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