1 /* Conky, a system monitor, based on torsmo
3 * Please see COPYING for details
5 * Copyright (c) 2005-2009 Brenden Matthews, et. al.
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * vim: ts=4 sw=4 noet ai cindent syntax=c
43 struct image_list_s *next;
46 struct image_list_s *image_list_start, *image_list_end;
49 Imlib_Updates updates, current_update;
50 /* our virtual framebuffer image we draw into */
51 Imlib_Image buffer, image;
53 static int cache_size_set = 0;
55 /* flush the image cache ever X seconds */
56 static int cimlib_cache_flush_interval = 0;
57 static int cimlib_cache_flush_last = 0;
59 #define DEFAULT_IMLIB2_CACHE_SIZE 4096 * 1024 /* default cache size for loaded images */
61 void cimlib_set_cache_size(long size)
63 imlib_set_cache_size(size);
67 void cimlib_set_cache_flush_interval(long interval)
70 cimlib_cache_flush_interval = interval;
72 ERR("Imlib2: flush interval should be >= 0");
76 void cimlib_cleanup(void)
78 struct image_list_s *cur = image_list_start, *last = NULL;
84 image_list_start = image_list_end = NULL;
87 void cimlib_init(Display *disp, Window drawable, Visual *visual, Colormap colourmap)
89 image_list_start = image_list_end = NULL;
90 if (!cache_size_set) cimlib_set_cache_size(DEFAULT_IMLIB2_CACHE_SIZE);
91 /* set the maximum number of colors to allocate for 8bpp and less to 256 */
92 imlib_set_color_usage(256);
93 /* dither for depths < 24bpp */
94 imlib_context_set_dither(1);
95 /* set the display , visual, colormap and drawable we are using */
96 imlib_context_set_display(disp);
97 imlib_context_set_visual(visual);
98 imlib_context_set_colormap(colourmap);
99 imlib_context_set_drawable(drawable);
102 void cimlib_add_image(const char *args)
104 struct image_list_s *cur = NULL;
107 cur = malloc(sizeof(struct image_list_s));
108 memset(cur, 0, sizeof(struct image_list_s));
110 if (!sscanf(args, "%1023s", cur->name)) {
111 ERR("Invalid args for $image. Format is: '<path to image> (-p x,y) (-s WxH) (-n) (-f interval)' (got '%s')", args);
115 to_real_path(cur->name, cur->name);
116 // now we check for optional args
117 tmp = strstr(args, "-p ");
120 sscanf(tmp, "%i,%i", &cur->x, &cur->y);
122 tmp = strstr(args, "-s ");
125 if (sscanf(tmp, "%ix%i", &cur->w, &cur->h)) {
130 tmp = strstr(args, "-n");
135 tmp = strstr(args, "-f ");
138 if (sscanf(tmp, "%d", &cur->flush_interval)) {
142 if (cur->flush_interval < 0) {
143 ERR("Imlib2: flush interval should be >= 0");
144 cur->flush_interval = 0;
147 if (image_list_end) {
148 image_list_end->next = cur;
149 image_list_end = cur;
151 image_list_start = image_list_end = cur;
156 cimlib_draw_image(struct image_list_s *cur, int *clip_x,
157 int *clip_y, int *clip_x2, int *clip_y2)
160 time_t now = time(NULL);
162 image = imlib_load_image(cur->name);
164 ERR("Unable to load image '%s'", cur->name);
168 DBGP("Drawing image '%s' at (%i,%i) scaled to %ix%i, "
169 "caching interval set to %i (with -n opt %i)",
170 cur->name, cur->x, cur->y, cur->w, cur->h,
171 cur->flush_interval, cur->no_cache);
173 imlib_context_set_image(image);
174 /* turn alpha channel on */
175 imlib_image_set_has_alpha(1);
176 w = imlib_image_get_width();
177 h = imlib_image_get_height();
182 imlib_context_set_image(buffer);
183 imlib_blend_image_onto_image(image, 1, 0, 0, w, h,
184 cur->x, cur->y, cur->w, cur->h);
185 imlib_context_set_image(image);
186 if (cur->no_cache || (cur->flush_interval &&
187 now % cur->flush_interval == 0)) {
188 imlib_free_image_and_decache();
192 if (cur->x < *clip_x) *clip_x = cur->x;
193 if (cur->y < *clip_y) *clip_y = cur->y;
194 if (cur->x + cur->w > *clip_x2) *clip_x2 = cur->x + cur->w;
195 if (cur->y + cur->h > *clip_y2) *clip_y2 = cur->y + cur->h;
198 static void cimlib_draw_all(int *clip_x, int *clip_y, int *clip_x2, int *clip_y2)
200 struct image_list_s *cur = image_list_start;
202 cimlib_draw_image(cur, clip_x, clip_y, clip_x2, clip_y2);
207 void cimlib_render(int x, int y, int width, int height)
209 int clip_x = INT_MAX, clip_y = INT_MAX;
210 int clip_x2 = 0, clip_y2 = 0;
213 if (!image_list_start) return; /* are we actually drawing anything? */
215 /* cheque if it's time to flush our cache */
217 if (cimlib_cache_flush_interval && now - cimlib_cache_flush_interval > cimlib_cache_flush_last) {
218 int size = imlib_get_cache_size();
219 imlib_set_cache_size(0);
220 imlib_set_cache_size(size);
221 cimlib_cache_flush_last = now;
222 DBGP("Flushing Imlib2 cache (%li)\n", now);
225 /* take all the little rectangles to redraw and merge them into
226 * something sane for rendering */
227 buffer = imlib_create_image(width, height);
228 /* clear our buffer */
229 imlib_context_set_image(buffer);
231 /* we can blend stuff now */
232 imlib_context_set_blend(1);
233 /* turn alpha channel on */
234 imlib_image_set_has_alpha(1);
236 cimlib_draw_all(&clip_x, &clip_y, &clip_x2, &clip_y2);
238 /* set the buffer image as our current image */
239 imlib_context_set_image(buffer);
241 /* setup our clip rect */
242 if (clip_x == INT_MAX) clip_x = 0;
243 if (clip_y == INT_MAX) clip_y = 0;
245 /* render the image at 0, 0 */
246 imlib_render_image_part_on_drawable_at_size(clip_x, clip_y, clip_x2 - clip_x,
247 clip_y2 - clip_y, x + clip_x, y + clip_y, clip_x2 - clip_x,
249 /* don't need that temporary buffer image anymore */