openbox/composite.c

   1 #include "composite.h"
   2 #include "openbox.h"
   3 #include "extensions.h"
   4
   5 #ifndef USE_XCOMPOSITE
   6 void composite_startup(gboolean reconfig) {}
   7 void composite_shutdown(gboolean reconfig) {}
   8 gboolean composite_window_has_alpha(Visual *vis) { return FALSE; }
   9 XID composite_get_window_picture(Window win, Visual *vis) { return None; }
  10 Pixmap composite_get_window_pixmap(Window win) { return None; }
  11 void composite_setup_root_window() {}
  12 void composite_enable_for_window(Window win) {}
  13 #else
  14
  15 static Picture root_picture = None;
  16
  17 void composite_startup(gboolean reconfig)
  18 {
  19     if (reconfig) return;
  20     if (!extensions_comp) return;
  21 }
  22
  23 void composite_shutdown(gboolean reconfig)
  24 {
  25     if (reconfig) return;
  26     if (!extensions_comp) return;
  27 }
  28
  29 void composite_setup_root_window()
  30 {
  31     if (root_picture)
  32         XRenderFreePicture(ob_display, root_picture);
  33
  34     root_picture =
  35         composite_get_window_picture(RootWindow(ob_display, ob_screen),
  36                                      RrVisual(ob_rr_inst));
  37 }
  38
  39 gboolean composite_window_has_alpha(Visual *vis)
  40 {
  41     XRenderPictFormat *format;
  42
  43     if (!extensions_comp) return FALSE;
  44
  45     format = XRenderFindVisualFormat(ob_display, vis);
  46     return format->type == PictTypeDirect && format->direct.alphaMask;
  47 }
  48
  49 XID composite_get_window_picture(Window win, Visual *vis)
  50 {
  51     XRenderPictureAttributes pa;
  52     XRenderPictFormat *format;
  53
  54     if (!extensions_comp) return None;
  55
  56     format = XRenderFindVisualFormat(ob_display, vis);
  57
  58     pa.subwindow_mode = IncludeInferiors;
  59     return XRenderCreatePicture(ob_display, win, format, CPSubwindowMode, &pa);
  60 }
  61
  62 Pixmap composite_get_window_pixmap(Window win)
  63 {
  64     if (!extensions_comp) return None;
  65
  66     return XCompositeNameWindowPixmap(ob_display, win);
  67 }
  68
  69 void composite_enable_for_window(Window win)
  70 {
  71     /* Redirect window contents to offscreen pixmaps */
  72     XCompositeRedirectWindow(ob_display, win, CompositeRedirectAutomatic);
  73 }
  74
  75 #endif