Dogcows Code - chaz/openbox/blob - tests/icons.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    icons.c for the Openbox window manager
   4    Copyright (c) 2003-2007   Dana Jansens
   5
   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.
  10
  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.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include <X11/Xlib.h>
  20 #include <X11/Xutil.h>
  21 #include <X11/Xatom.h>
  22 #include <X11/cursorfont.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <assert.h>
  26
  27 Window findClient(Display *d, Window win)
  28 {
  29     Window r, *children;
  30     unsigned int n, i;
  31     Atom state = XInternAtom(d, "WM_STATE", True);
  32     Atom ret_type;
  33     int ret_format;
  34     unsigned long ret_items, ret_bytesleft;
  35     unsigned long *prop_return;
  36
  37     XQueryTree(d, win, &r, &r, &children, &n);
  38     for (i = 0; i < n; ++i) {
  39         Window w = findClient(d, children[i]);
  40         if (w) return w;
  41     }
  42
  43     // try me
  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)
  49         return None;
  50     return win; // found it!
  51 }
  52
  53 int main(int argc, char **argv)
  54 {
  55     Display *d = XOpenDisplay(NULL);
  56     int s = DefaultScreen(d);
  57     Atom net_wm_icon = XInternAtom(d, "_NET_WM_ICON", True);
  58     Atom ret_type;
  59     unsigned int winw = 0, winh = 0;
  60     int ret_format;
  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];
  65     long offset = 0;
  66     unsigned int image = 0;
  67     unsigned int j; // loop counter
  68     Window id, win;
  69     Pixmap p;
  70     Cursor cur;
  71     XEvent ev;
  72
  73     printf("Click on a window with an icon...\n");
  74
  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);
  80     while (1) {
  81         XNextEvent(d, &ev);
  82         if (ev.type == ButtonPress) {
  83             XUngrabPointer(d, CurrentTime);
  84             id = findClient(d, ev.xbutton.subwindow);
  85             break;
  86         }
  87     }
  88
  89     printf("Using window 0x%lx\n", id);
  90
  91     do {
  92         unsigned int w, h;
  93
  94         XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
  95                            False, XA_CARDINAL, &ret_type, &ret_format,
  96                            &ret_items, &ret_bytesleft,
  97                            (unsigned char**) &prop_return[image]);
  98         if (ret_type == None || ret_items < 1) {
  99             printf("No icon found\n");
 100             return 1;
 101         }
 102         w = prop_return[image][0];
 103         XFree(prop_return[image]);
 104
 105         XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
 106                            False, XA_CARDINAL, &ret_type, &ret_format,
 107                            &ret_items, &ret_bytesleft,
 108                            (unsigned char**) &prop_return[image]);
 109         if (ret_type == None || ret_items < 1) {
 110             printf("Failed to get height\n");
 111             return 1;
 112         }
 113         h = prop_return[image][0];
 114         XFree(prop_return[image]);
 115
 116         XGetWindowProperty(d, id, net_wm_icon, offset, w*h,
 117                            False, XA_CARDINAL, &ret_type, &ret_format,
 118                            &ret_items, &ret_bytesleft,
 119                            (unsigned char**) &prop_return[image]);
 120         if (ret_type == None || ret_items < w*h) {
 121             printf("Failed to get image data\n");
 122             return 1;
 123         }
 124         offset += w*h;
 125
 126         printf("Found icon with size %dx%d\n", w, h);
 127
 128         i[image] = XCreateImage(d, DefaultVisual(d, s), DefaultDepth(d, s),
 129                                 ZPixmap, 0, NULL, w, h, 32, 0);
 130         assert(i[image]);
 131         i[image]->byte_order = LSBFirst;
 132         i[image]->data = (char*)prop_return[image];
 133         for (j = 0; j < w*h; j++) {
 134             unsigned char alpha = (unsigned char)i[image]->data[j*4+3];
 135             unsigned char r = (unsigned char) i[image]->data[j*4+0];
 136             unsigned char g = (unsigned char) i[image]->data[j*4+1];
 137             unsigned char b = (unsigned char) i[image]->data[j*4+2];
 138
 139             // background color
 140             unsigned char bgr = 0;
 141             unsigned char bgg = 0;
 142             unsigned char bgb = 0;
 143
 144             r = bgr + (r - bgr) * alpha / 256;
 145             g = bgg + (g - bgg) * alpha / 256;
 146             b = bgb + (b - bgb) * alpha / 256;
 147
 148             i[image]->data[j*4+0] = (char) r;
 149             i[image]->data[j*4+1] = (char) g;
 150             i[image]->data[j*4+2] = (char) b;
 151         }
 152
 153         winw += w;
 154         if (h > winh) winh = h;
 155
 156         ++image;
 157     } while (ret_bytesleft > 0 && image < MAX_IMAGES);
 158
 159     win = XCreateSimpleWindow(d, RootWindow(d, s), 0, 0, winw, winh,
 160                               0, 0, 0);
 161     assert(win);
 162     XMapWindow(d, win);
 163
 164     p = XCreatePixmap(d, win, winw, winh, DefaultDepth(d, s));
 165     XFillRectangle(d, p, DefaultGC(d, s), 0, 0, winw, winh);
 166
 167     for (j = 0; j < image; ++j) {
 168         static unsigned int x = 0;
 169
 170         XPutImage(d, p, DefaultGC(d, s), i[j], 0, 0, x, 0,
 171                   i[j]->width, i[j]->height);
 172         x += i[j]->width;
 173         XDestroyImage(i[j]);
 174     }
 175
 176     XSetWindowBackgroundPixmap(d, win, p);
 177     XClearWindow(d, win);
 178
 179     XFlush(d);
 180
 181     getchar();
 182
 183     XFreePixmap(d, p);
 184     XCloseDisplay(d);
 185 }