1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 icons.c for the Openbox window manager
4 Copyright (c) 2003 Ben Jansens
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 See the COPYING file for a copy of the GNU General Public License.
20 #include <X11/Xutil.h>
21 #include <X11/Xatom.h>
22 #include <X11/cursorfont.h>
27 Window findClient(Display *d, Window win)
31 Atom state = XInternAtom(d, "WM_STATE", True);
34 unsigned long ret_items, ret_bytesleft;
35 unsigned long *prop_return;
37 XQueryTree(d, win, &r, &r, &children, &n);
38 for (i = 0; i < n; ++i) {
39 Window w = findClient(d, children[i]);
44 XGetWindowProperty(d, win, state, 0, 1,
45 False, state, &ret_type, &ret_format,
46 &ret_items, &ret_bytesleft,
47 (unsigned char**) &prop_return);
48 if (ret_type == None || ret_items < 1)
50 return win; // found it!
53 int main(int argc, char **argv)
55 Display *d = XOpenDisplay(NULL);
56 int s = DefaultScreen(d);
57 Atom net_wm_icon = XInternAtom(d, "_NET_WM_ICON", True);
59 unsigned int winw = 0, winh = 0;
61 unsigned long ret_items, ret_bytesleft;
62 const int MAX_IMAGES = 10;
63 unsigned long *prop_return[MAX_IMAGES];
64 XImage *i[MAX_IMAGES];
66 unsigned int image = 0;
67 unsigned int j; // loop counter
73 printf("Click on a window with an icon...\n");
75 //int id = strtol(argv[1], NULL, 16);
76 XUngrabPointer(d, CurrentTime);
77 cur = XCreateFontCursor(d, XC_crosshair);
78 XGrabPointer(d, RootWindow(d, s), False, ButtonPressMask, GrabModeAsync,
79 GrabModeAsync, None, cur, CurrentTime);
83 if (ev.type == ButtonPress) {
84 XUngrabPointer(d, CurrentTime);
85 id = findClient(d, ev.xbutton.subwindow);
90 printf("Using window 0x%lx\n", id);
95 XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
96 False, XA_CARDINAL, &ret_type, &ret_format,
97 &ret_items, &ret_bytesleft,
98 (unsigned char**) &prop_return[image]);
99 if (ret_type == None || ret_items < 1) {
100 printf("No icon found\n");
103 w = prop_return[image][0];
104 XFree(prop_return[image]);
106 XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
107 False, XA_CARDINAL, &ret_type, &ret_format,
108 &ret_items, &ret_bytesleft,
109 (unsigned char**) &prop_return[image]);
110 if (ret_type == None || ret_items < 1) {
111 printf("Failed to get height\n");
114 h = prop_return[image][0];
115 XFree(prop_return[image]);
117 XGetWindowProperty(d, id, net_wm_icon, offset, w*h,
118 False, XA_CARDINAL, &ret_type, &ret_format,
119 &ret_items, &ret_bytesleft,
120 (unsigned char**) &prop_return[image]);
121 if (ret_type == None || ret_items < w*h) {
122 printf("Failed to get image data\n");
127 printf("Found icon with size %dx%d\n", w, h);
129 i[image] = XCreateImage(d, DefaultVisual(d, s), DefaultDepth(d, s),
130 ZPixmap, 0, NULL, w, h, 32, 0);
132 i[image]->byte_order = LSBFirst;
133 i[image]->data = (char*)prop_return[image];
134 for (j = 0; j < w*h; j++) {
135 unsigned char alpha = (unsigned char)i[image]->data[j*4+3];
136 unsigned char r = (unsigned char) i[image]->data[j*4+0];
137 unsigned char g = (unsigned char) i[image]->data[j*4+1];
138 unsigned char b = (unsigned char) i[image]->data[j*4+2];
141 unsigned char bgr = 0;
142 unsigned char bgg = 0;
143 unsigned char bgb = 0;
145 r = bgr + (r - bgr) * alpha / 256;
146 g = bgg + (g - bgg) * alpha / 256;
147 b = bgb + (b - bgb) * alpha / 256;
149 i[image]->data[j*4+0] = (char) r;
150 i[image]->data[j*4+1] = (char) g;
151 i[image]->data[j*4+2] = (char) b;
155 if (h > winh) winh = h;
158 } while (ret_bytesleft > 0 && image < MAX_IMAGES);
160 win = XCreateSimpleWindow(d, RootWindow(d, s), 0, 0, winw, winh,
165 p = XCreatePixmap(d, win, winw, winh, DefaultDepth(d, s));
166 XFillRectangle(d, p, DefaultGC(d, s), 0, 0, winw, winh);
168 for (j = 0; j < image; ++j) {
169 static unsigned int x = 0;
171 XPutImage(d, p, DefaultGC(d, s), i[j], 0, 0, x, 0,
172 i[j]->width, i[j]->height);
177 XSetWindowBackgroundPixmap(d, win, p);
178 XClearWindow(d, win);