1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
3 * Conky, a system monitor, based on torsmo
5 * Please see COPYING for details
7 * Copyright (c) 2005-2009 Brenden Matthews, et. al.
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 * vim: ts=4 sw=4 noet ai cindent syntax=c
45 struct image_list_s *next;
48 struct image_list_s *image_list_start, *image_list_end;
51 Imlib_Updates updates, current_update;
52 /* our virtual framebuffer image we draw into */
53 Imlib_Image buffer, image;
55 static int cache_size_set = 0;
57 /* flush the image cache ever X seconds */
58 static int cimlib_cache_flush_interval = 0;
59 static int cimlib_cache_flush_last = 0;
61 #define DEFAULT_IMLIB2_CACHE_SIZE 4096 * 1024 /* default cache size for loaded images */
63 void cimlib_set_cache_size(long size)
65 imlib_set_cache_size(size);
69 void cimlib_set_cache_flush_interval(long interval)
72 cimlib_cache_flush_interval = interval;
74 NORM_ERR("Imlib2: flush interval should be >= 0");
78 void cimlib_cleanup(void)
80 struct image_list_s *cur = image_list_start, *last = NULL;
86 image_list_start = image_list_end = NULL;
89 void cimlib_init(Display *disp, Window drawable, Visual *visual, Colormap colourmap)
91 image_list_start = image_list_end = NULL;
92 if (!cache_size_set) cimlib_set_cache_size(DEFAULT_IMLIB2_CACHE_SIZE);
93 /* set the maximum number of colors to allocate for 8bpp and less to 256 */
94 imlib_set_color_usage(256);
95 /* dither for depths < 24bpp */
96 imlib_context_set_dither(1);
97 /* set the display , visual, colormap and drawable we are using */
98 imlib_context_set_display(disp);
99 imlib_context_set_visual(visual);
100 imlib_context_set_colormap(colourmap);
101 imlib_context_set_drawable(drawable);
104 void cimlib_add_image(const char *args)
106 struct image_list_s *cur = NULL;
109 cur = malloc(sizeof(struct image_list_s));
110 memset(cur, 0, sizeof(struct image_list_s));
112 if (!sscanf(args, "%1023s", cur->name)) {
113 NORM_ERR("Invalid args for $image. Format is: '<path to image> (-p x,y) (-s WxH) (-n) (-f interval)' (got '%s')", args);
117 to_real_path(cur->name, cur->name);
118 // now we check for optional args
119 tmp = strstr(args, "-p ");
122 sscanf(tmp, "%i,%i", &cur->x, &cur->y);
124 tmp = strstr(args, "-s ");
127 if (sscanf(tmp, "%ix%i", &cur->w, &cur->h)) {
132 tmp = strstr(args, "-n");
137 tmp = strstr(args, "-f ");
140 if (sscanf(tmp, "%d", &cur->flush_interval)) {
144 if (cur->flush_interval < 0) {
145 NORM_ERR("Imlib2: flush interval should be >= 0");
146 cur->flush_interval = 0;
149 if (image_list_end) {
150 image_list_end->next = cur;
151 image_list_end = cur;
153 image_list_start = image_list_end = cur;
158 cimlib_draw_image(struct image_list_s *cur, int *clip_x,
159 int *clip_y, int *clip_x2, int *clip_y2)
162 time_t now = time(NULL);
164 image = imlib_load_image(cur->name);
166 NORM_ERR("Unable to load image '%s'", cur->name);
170 DBGP("Drawing image '%s' at (%i,%i) scaled to %ix%i, "
171 "caching interval set to %i (with -n opt %i)",
172 cur->name, cur->x, cur->y, cur->w, cur->h,
173 cur->flush_interval, cur->no_cache);
175 imlib_context_set_image(image);
176 /* turn alpha channel on */
177 imlib_image_set_has_alpha(1);
178 w = imlib_image_get_width();
179 h = imlib_image_get_height();
184 imlib_context_set_image(buffer);
185 imlib_blend_image_onto_image(image, 1, 0, 0, w, h,
186 cur->x, cur->y, cur->w, cur->h);
187 imlib_context_set_image(image);
188 if (cur->no_cache || (cur->flush_interval &&
189 now % cur->flush_interval == 0)) {
190 imlib_free_image_and_decache();
194 if (cur->x < *clip_x) *clip_x = cur->x;
195 if (cur->y < *clip_y) *clip_y = cur->y;
196 if (cur->x + cur->w > *clip_x2) *clip_x2 = cur->x + cur->w;
197 if (cur->y + cur->h > *clip_y2) *clip_y2 = cur->y + cur->h;
200 static void cimlib_draw_all(int *clip_x, int *clip_y, int *clip_x2, int *clip_y2)
202 struct image_list_s *cur = image_list_start;
204 cimlib_draw_image(cur, clip_x, clip_y, clip_x2, clip_y2);
209 void cimlib_render(int x, int y, int width, int height)
211 int clip_x = INT_MAX, clip_y = INT_MAX;
212 int clip_x2 = 0, clip_y2 = 0;
215 if (!image_list_start) return; /* are we actually drawing anything? */
217 /* cheque if it's time to flush our cache */
219 if (cimlib_cache_flush_interval && now - cimlib_cache_flush_interval > cimlib_cache_flush_last) {
220 int size = imlib_get_cache_size();
221 imlib_set_cache_size(0);
222 imlib_set_cache_size(size);
223 cimlib_cache_flush_last = now;
224 DBGP("Flushing Imlib2 cache (%li)\n", now);
227 /* take all the little rectangles to redraw and merge them into
228 * something sane for rendering */
229 buffer = imlib_create_image(width, height);
230 /* clear our buffer */
231 imlib_context_set_image(buffer);
233 /* we can blend stuff now */
234 imlib_context_set_blend(1);
235 /* turn alpha channel on */
236 imlib_image_set_has_alpha(1);
238 cimlib_draw_all(&clip_x, &clip_y, &clip_x2, &clip_y2);
240 /* set the buffer image as our current image */
241 imlib_context_set_image(buffer);
243 /* setup our clip rect */
244 if (clip_x == INT_MAX) clip_x = 0;
245 if (clip_y == INT_MAX) clip_y = 0;
247 /* render the image at 0, 0 */
248 imlib_render_image_part_on_drawable_at_size(clip_x, clip_y, clip_x2 - clip_x,
249 clip_y2 - clip_y, x + clip_x, y + clip_y, clip_x2 - clip_x,
251 /* don't need that temporary buffer image anymore */