1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
2 * vim: ts=4 sw=4 noet ai cindent syntax=c
4 * Conky, a system monitor, based on torsmo
6 * Please see COPYING for details
8 * Copyright (c) 2005-2009 Brenden Matthews, et. al.
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
44 struct image_list_s *next;
47 struct image_list_s *image_list_start, *image_list_end;
50 Imlib_Updates updates, current_update;
51 /* our virtual framebuffer image we draw into */
52 Imlib_Image buffer, image;
54 static int cache_size_set = 0;
56 /* flush the image cache ever X seconds */
57 static int cimlib_cache_flush_interval = 0;
58 static int cimlib_cache_flush_last = 0;
60 #define DEFAULT_IMLIB2_CACHE_SIZE 4096 * 1024 /* default cache size for loaded images */
62 void cimlib_set_cache_size(long size)
64 imlib_set_cache_size(size);
68 void cimlib_set_cache_flush_interval(long interval)
71 cimlib_cache_flush_interval = interval;
73 NORM_ERR("Imlib2: flush interval should be >= 0");
77 void cimlib_cleanup(void)
79 struct image_list_s *cur = image_list_start, *last = NULL;
85 image_list_start = image_list_end = NULL;
88 Imlib_Context context;
90 void cimlib_init(Display *disp, Window drawable, Visual *visual, Colormap
93 image_list_start = image_list_end = NULL;
94 context = imlib_context_new();
95 imlib_context_push(context);
96 if (!cache_size_set) cimlib_set_cache_size(DEFAULT_IMLIB2_CACHE_SIZE);
97 /* set the maximum number of colors to allocate for 8bpp and less to 256 */
98 imlib_set_color_usage(256);
99 /* dither for depths < 24bpp */
100 imlib_context_set_dither(1);
101 /* set the display , visual, colormap and drawable we are using */
102 imlib_context_set_display(disp);
103 imlib_context_set_visual(visual);
104 imlib_context_set_colormap(colourmap);
105 imlib_context_set_drawable(drawable);
108 void cimlib_deinit(void)
112 imlib_context_disconnect_display();
114 imlib_context_free(context);
117 void cimlib_add_image(const char *args)
119 struct image_list_s *cur = NULL;
122 cur = malloc(sizeof(struct image_list_s));
123 memset(cur, 0, sizeof(struct image_list_s));
125 if (!sscanf(args, "%1023s", cur->name)) {
126 NORM_ERR("Invalid args for $image. Format is: '<path to image> (-p"
127 "x,y) (-s WxH) (-n) (-f interval)' (got '%s')", args);
131 to_real_path(cur->name, cur->name);
132 // now we check for optional args
133 tmp = strstr(args, "-p ");
136 sscanf(tmp, "%i,%i", &cur->x, &cur->y);
138 tmp = strstr(args, "-s ");
141 if (sscanf(tmp, "%ix%i", &cur->w, &cur->h)) {
146 tmp = strstr(args, "-n");
151 tmp = strstr(args, "-f ");
154 if (sscanf(tmp, "%d", &cur->flush_interval)) {
158 if (cur->flush_interval < 0) {
159 NORM_ERR("Imlib2: flush interval should be >= 0");
160 cur->flush_interval = 0;
163 if (image_list_end) {
164 image_list_end->next = cur;
165 image_list_end = cur;
167 image_list_start = image_list_end = cur;
171 static void cimlib_draw_image(struct image_list_s *cur, int *clip_x, int
172 *clip_y, int *clip_x2, int *clip_y2)
175 time_t now = time(NULL);
177 image = imlib_load_image(cur->name);
179 NORM_ERR("Unable to load image '%s'", cur->name);
183 DBGP("Drawing image '%s' at (%i,%i) scaled to %ix%i, "
184 "caching interval set to %i (with -n opt %i)",
185 cur->name, cur->x, cur->y, cur->w, cur->h,
186 cur->flush_interval, cur->no_cache);
188 imlib_context_set_image(image);
189 /* turn alpha channel on */
190 imlib_image_set_has_alpha(1);
191 w = imlib_image_get_width();
192 h = imlib_image_get_height();
197 imlib_context_set_image(buffer);
198 imlib_blend_image_onto_image(image, 1, 0, 0, w, h,
199 cur->x, cur->y, cur->w, cur->h);
200 imlib_context_set_image(image);
201 if (cur->no_cache || (cur->flush_interval &&
202 now % cur->flush_interval == 0)) {
203 imlib_free_image_and_decache();
207 if (cur->x < *clip_x) *clip_x = cur->x;
208 if (cur->y < *clip_y) *clip_y = cur->y;
209 if (cur->x + cur->w > *clip_x2) *clip_x2 = cur->x + cur->w;
210 if (cur->y + cur->h > *clip_y2) *clip_y2 = cur->y + cur->h;
213 static void cimlib_draw_all(int *clip_x, int *clip_y, int *clip_x2, int *clip_y2)
215 struct image_list_s *cur = image_list_start;
217 cimlib_draw_image(cur, clip_x, clip_y, clip_x2, clip_y2);
222 void cimlib_render(int x, int y, int width, int height)
224 int clip_x = INT_MAX, clip_y = INT_MAX;
225 int clip_x2 = 0, clip_y2 = 0;
228 if (!image_list_start) return; /* are we actually drawing anything? */
230 /* cheque if it's time to flush our cache */
232 if (cimlib_cache_flush_interval && now - cimlib_cache_flush_interval > cimlib_cache_flush_last) {
233 int size = imlib_get_cache_size();
234 imlib_set_cache_size(0);
235 imlib_set_cache_size(size);
236 cimlib_cache_flush_last = now;
237 DBGP("Flushing Imlib2 cache (%li)\n", now);
240 /* take all the little rectangles to redraw and merge them into
241 * something sane for rendering */
242 buffer = imlib_create_image(width, height);
243 /* clear our buffer */
244 imlib_context_set_image(buffer);
246 /* we can blend stuff now */
247 imlib_context_set_blend(1);
248 /* turn alpha channel on */
249 imlib_image_set_has_alpha(1);
251 cimlib_draw_all(&clip_x, &clip_y, &clip_x2, &clip_y2);
253 /* set the buffer image as our current image */
254 imlib_context_set_image(buffer);
256 /* setup our clip rect */
257 if (clip_x == INT_MAX) clip_x = 0;
258 if (clip_y == INT_MAX) clip_y = 0;
260 /* render the image at 0, 0 */
261 imlib_render_image_part_on_drawable_at_size(clip_x, clip_y, clip_x2 - clip_x,
262 clip_y2 - clip_y, x + clip_x, y + clip_y, clip_x2 - clip_x,
264 /* don't need that temporary buffer image anymore */