1 /* Copyright (c) 2012-2014, Bastien Dejean
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
17 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
20 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 * The views and conclusions contained in the software and documentation are those
25 * of the authors and should not be interpreted as representing official policies,
26 * either expressed or implied, of the FreeBSD Project.
34 void warn(char *fmt, ...)
38 vfprintf(stderr, fmt, ap);
42 __attribute__((noreturn))
43 void err(char *fmt, ...)
47 vfprintf(stderr, fmt, ap);
52 bool get_color(char *col, xcb_window_t win, uint32_t *pxl)
54 xcb_colormap_t map = screen->default_colormap;
55 xcb_get_window_attributes_reply_t *reply = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
57 map = reply->colormap;
61 unsigned int red, green, blue;
62 if (sscanf(col + 1, "%02x%02x%02x", &red, &green, &blue) == 3) {
63 /* 2**16 - 1 == 0xffff and 0x101 * 0xij == 0xijij */
67 xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply(dpy, xcb_alloc_color(dpy, map, red, green, blue), NULL);
75 xcb_alloc_named_color_reply_t *reply = xcb_alloc_named_color_reply(dpy, xcb_alloc_named_color(dpy, map, strlen(col), col), NULL);
86 double distance(xcb_point_t a, xcb_point_t b)
88 return hypot(a.x - b.x, a.y - b.y);
91 void center_rectangle(xcb_rectangle_t *src, xcb_rectangle_t dst)
93 src->x = dst.x + (dst.width - src->width) / 2;
94 src->y = dst.y + (dst.height - src->height) / 2;