widget/gtk/WindowSurfaceX11.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "WindowSurfaceX11.h"
   8 #include "gfxPlatform.h"
   9 #include "X11UndefineNone.h"
  10
  11 namespace mozilla {
  12 namespace widget {
  13
  14 WindowSurfaceX11::WindowSurfaceX11(Display* aDisplay, Window aWindow,
  15                                    Visual* aVisual, unsigned int aDepth)
  16     : mDisplay(aDisplay),
  17       mWindow(aWindow),
  18       mVisual(aVisual),
  19       mDepth(aDepth),
  20       mFormat(GetVisualFormat(aVisual, aDepth)) {}
  21
  22 /* static */
  23 gfx::SurfaceFormat WindowSurfaceX11::GetVisualFormat(const Visual* aVisual,
  24                                                      unsigned int aDepth) {
  25   switch (aDepth) {
  26     case 32:
  27       if (aVisual->red_mask == 0xff0000 && aVisual->green_mask == 0xff00 &&
  28           aVisual->blue_mask == 0xff) {
  29         return gfx::SurfaceFormat::B8G8R8A8;
  30       }
  31       break;
  32     case 24:
  33       if (aVisual->red_mask == 0xff0000 && aVisual->green_mask == 0xff00 &&
  34           aVisual->blue_mask == 0xff) {
  35         return gfx::SurfaceFormat::B8G8R8X8;
  36       }
  37       break;
  38     case 16:
  39       if (aVisual->red_mask == 0xf800 && aVisual->green_mask == 0x07e0 &&
  40           aVisual->blue_mask == 0x1f) {
  41         return gfx::SurfaceFormat::R5G6B5_UINT16;
  42       }
  43       break;
  44   }
  45
  46   return gfx::SurfaceFormat::UNKNOWN;
  47 }
  48
  49 }  // namespace widget
  50 }  // namespace mozilla