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

   1 #include <X11/Xlib.h>
   2 #include <X11/Xutil.h>
   3 #include <X11/Xatom.h>
   4 #include <X11/cursorfont.h>
   5 #include <cstdlib>
   6 #include <cstdio>
   7 #include <cassert>
   8
   9 Window findClient(Display *d, Window win)
  10 {
  11   Window r, *children;
  12   unsigned int n;
  13   XQueryTree(d, win, &r, &r, &children, &n);
  14   for (unsigned int i = 0; i < n; ++i) {
  15     Window w = findClient(d, children[i]);
  16     if (w) return w;
  17   }
  18
  19   // try me
  20   Atom state = XInternAtom(d, "WM_STATE", true);
  21   Atom ret_type;
  22   int ret_format;
  23   unsigned long ret_items, ret_bytesleft;
  24   unsigned long *prop_return;
  25   XGetWindowProperty(d, win, state, 0, 1,
  26                      false, state, &ret_type, &ret_format,
  27                      &ret_items, &ret_bytesleft,
  28                      (unsigned char**) &prop_return);
  29   if (ret_type == None || ret_items < 1)
  30     return None;
  31   return win; // found it!
  32 }
  33
  34 int main(int argc, char **argv)
  35 {
  36   Display *d = XOpenDisplay(NULL);
  37   int s = DefaultScreen(d);
  38   Atom net_wm_icon = XInternAtom(d, "_NET_WM_ICON", true);
  39   Atom ret_type;
  40   unsigned int winw = 0, winh = 0;
  41   int ret_format;
  42   unsigned long ret_items, ret_bytesleft;
  43   const int MAX_IMAGES = 10;
  44   unsigned long *prop_return[MAX_IMAGES];
  45   XImage *i[MAX_IMAGES];
  46
  47   printf("Click on a window with an icon...\n");
  48
  49   //int id = strtol(argv[1], NULL, 16);
  50   XUngrabPointer(d, CurrentTime);
  51   Window id;
  52   Cursor cur = XCreateFontCursor(d, XC_crosshair);
  53   XGrabPointer(d, RootWindow(d, s), false, ButtonPressMask, GrabModeAsync,
  54                GrabModeAsync, None, cur, CurrentTime);
  55   XEvent ev;
  56   while (true) {
  57     XNextEvent(d, &ev);
  58     if (ev.type == ButtonPress) {
  59       XUngrabPointer(d, CurrentTime);
  60       id = ev.xbutton.subwindow;
  61       id = findClient(d, id);
  62       break;
  63     }
  64   }
  65
  66   printf("Using window 0x%lx\n", id);
  67
  68   long offset = 0;
  69   int image = 0;
  70
  71   do {
  72     XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
  73                        false, XA_CARDINAL, &ret_type, &ret_format,
  74                        &ret_items, &ret_bytesleft,
  75                        (unsigned char**) &prop_return[image]);
  76     if (ret_type == None || ret_items < 1) {
  77       printf("No icon found\n");
  78       return 1;
  79     }
  80     unsigned int w = prop_return[image][0];
  81     XFree(prop_return[image]);
  82
  83     XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
  84                        false, XA_CARDINAL, &ret_type, &ret_format,
  85                        &ret_items, &ret_bytesleft,
  86                        (unsigned char**) &prop_return[image]);
  87     if (ret_type == None || ret_items < 1) {
  88       printf("Failed to get height\n");
  89       return 1;
  90     }
  91     unsigned int h = prop_return[image][0];
  92     XFree(prop_return[image]);
  93
  94     XGetWindowProperty(d, id, net_wm_icon, offset, w*h,
  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 < w*h) {
  99       printf("Failed to get image data\n");
 100       return 1;
 101     }
 102     offset += w*h;
 103
 104     printf("Image dimentions: %d, %d\n", w, h);
 105
 106     i[image] = XCreateImage(d, DefaultVisual(d, s), DefaultDepth(d, s),
 107                             ZPixmap, 0, NULL, w, h, 32, 0);
 108     assert(i[image]);
 109     i[image]->byte_order = LSBFirst;
 110     i[image]->data = (char*)prop_return[image];
 111     for (unsigned int j = 0; j < w*h; j++) {
 112       unsigned char alpha = (unsigned char)i[image]->data[j*4+3];
 113       unsigned char r = (unsigned char) i[image]->data[j*4+0];
 114       unsigned char g = (unsigned char) i[image]->data[j*4+1];
 115       unsigned char b = (unsigned char) i[image]->data[j*4+2];
 116
 117       // background color
 118       unsigned char bgr = 40;
 119       unsigned char bgg = 0x8f;
 120       unsigned char bgb = 40;
 121
 122       r = bgr + (r - bgr) * alpha / 256;
 123       g = bgg + (g - bgg) * alpha / 256;
 124       b = bgb + (b - bgb) * alpha / 256;
 125
 126       i[image]->data[j*4+0] = (char) r;
 127       i[image]->data[j*4+1] = (char) g;
 128       i[image]->data[j*4+2] = (char) b;
 129     }
 130
 131     winw += w;
 132     if (h > winh) winh = h;
 133
 134     ++image;
 135   } while (ret_bytesleft > 0 && image < MAX_IMAGES);
 136
 137   Window win = XCreateSimpleWindow(d, RootWindow(d, s), 0, 0, winw, winh,
 138                                    0, 0, 0);
 139   assert(win);
 140   XMapWindow(d, win);
 141
 142   Pixmap p = XCreatePixmap(d, win, winw, winh, DefaultDepth(d, s));
 143   XFillRectangle(d, p, DefaultGC(d, s), 0, 0, winw, winh);
 144
 145   unsigned int x = 0;
 146   for (int j = 0; j < image; ++j) {
 147     XPutImage(d, p, DefaultGC(d, s), i[j], 0, 0, x, 0,
 148               i[j]->width, i[j]->height);
 149     x += i[j]->width;
 150     XFree(prop_return[j]);
 151     XDestroyImage(i[j]);
 152   }
 153
 154   XSetWindowBackgroundPixmap(d, win, p);
 155   XClearWindow(d, win);
 156
 157   XFlush(d);
 158
 159   getchar();
 160
 161   XFreePixmap(d, p);
 162   XCloseDisplay(d);
 163 }