2 * Copyright © 2008 Kristian Høgsberg
3 * Copyright © 2009 Chris Wilson
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting documentation, and
9 * that the name of the copyright holders not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission. The copyright holders make no representations
12 * about the suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
34 #include <gdk-pixbuf/gdk-pixbuf.h>
36 #include "wayland-client.h"
41 struct window *window;
42 struct display *display;
48 set_source_pixbuf(cairo_t *cr,
49 const GdkPixbuf *pixbuf,
55 gint width = gdk_pixbuf_get_width (pixbuf);
56 gint height = gdk_pixbuf_get_height (pixbuf);
57 guchar *gdk_pixels = gdk_pixbuf_get_pixels (pixbuf);
58 int gdk_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
59 int n_channels = gdk_pixbuf_get_n_channels (pixbuf);
62 cairo_format_t format;
63 cairo_surface_t *surface;
67 format = CAIRO_FORMAT_RGB24;
69 format = CAIRO_FORMAT_ARGB32;
71 surface = cairo_image_surface_create(format, width, height);
72 if (cairo_surface_status(surface)) {
73 cairo_set_source_surface(cr, surface, 0, 0);
77 cairo_stride = cairo_image_surface_get_stride(surface);
78 cairo_pixels = cairo_image_surface_get_data(surface);
80 for (j = height; j; j--) {
81 guchar *p = gdk_pixels;
82 guchar *q = cairo_pixels;
84 if (n_channels == 3) {
85 guchar *end = p + 3 * width;
88 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
101 guchar *end = p + 4 * width;
104 #define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END
107 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
108 MULT(q[0], p[2], p[3], t1);
109 MULT(q[1], p[1], p[3], t2);
110 MULT(q[2], p[0], p[3], t3);
114 MULT(q[1], p[0], p[3], t1);
115 MULT(q[2], p[1], p[3], t2);
116 MULT(q[3], p[2], p[3], t3);
125 gdk_pixels += gdk_rowstride;
126 cairo_pixels += cairo_stride;
128 cairo_surface_mark_dirty(surface);
130 cairo_set_source_surface(cr, surface,
131 src_x + .5 * (src_width - width),
132 src_y + .5 * (src_height - height));
133 cairo_surface_destroy(surface);
137 image_draw(struct image *image)
139 struct rectangle allocation;
142 cairo_surface_t *surface;
144 window_draw(image->window);
146 window_get_child_allocation(image->window, &allocation);
148 pb = gdk_pixbuf_new_from_file_at_size(image->filename,
155 surface = window_get_surface(image->window);
156 cr = cairo_create(surface);
157 window_get_child_allocation(image->window, &allocation);
158 cairo_rectangle(cr, allocation.x, allocation.y,
159 allocation.width, allocation.height);
161 cairo_push_group(cr);
162 cairo_translate(cr, allocation.x, allocation.y);
164 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
165 cairo_set_source_rgba(cr, 0, 0, 0, 1);
167 set_source_pixbuf(cr, pb,
169 allocation.width, allocation.height);
170 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
175 cairo_pop_group_to_source(cr);
179 window_flush(image->window);
180 cairo_surface_destroy(surface);
184 redraw_handler(struct window *window, void *data)
186 struct image *image = data;
192 keyboard_focus_handler(struct window *window,
193 struct input *device, void *data)
195 struct image *image = data;
197 window_schedule_redraw(image->window);
200 static struct image *
201 image_create(struct display *display, uint32_t key, const char *filename)
207 image = malloc(sizeof *image);
210 memset(image, 0, sizeof *image);
212 basename = g_path_get_basename(filename);
213 title = g_strdup_printf("Wayland Image - %s", basename);
216 image->filename = g_strdup(filename);
218 image->window = window_create(display, 500, 400);
219 window_set_title(image->window, title);
220 image->display = display;
222 /* FIXME: Window uses key 1 for moves, need some kind of
223 * allocation scheme here. Or maybe just a real toolkit. */
224 image->key = key + 100;
226 window_set_user_data(image->window, image);
227 window_set_redraw_handler(image->window, redraw_handler);
228 window_set_keyboard_focus_handler(image->window,
229 keyboard_focus_handler);
236 static const GOptionEntry option_entries[] = {
241 main(int argc, char *argv[])
246 d = display_create(&argc, &argv, option_entries);
248 fprintf(stderr, "failed to create display: %m\n");
252 for (i = 1; i < argc; i++)
253 image_create (d, i, argv[i]);