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
  10 namespace mozilla::widget {
  11
  12 WindowSurfaceX11::WindowSurfaceX11(Display* aDisplay, Window aWindow,
  13                                    Visual* aVisual, unsigned int aDepth)
  14     : mDisplay(aDisplay),
  15       mWindow(aWindow),
  16       mVisual(aVisual),
  17       mDepth(aDepth),
  18       mFormat(GetVisualFormat(aVisual, aDepth)) {}
  19
  20 /* static */
  21 gfx::SurfaceFormat WindowSurfaceX11::GetVisualFormat(const Visual* aVisual,
  22                                                      unsigned int aDepth) {
  23   switch (aDepth) {
  24     case 32:
  25       if (aVisual->red_mask == 0xff0000 && aVisual->green_mask == 0xff00 &&
  26           aVisual->blue_mask == 0xff) {
  27         return gfx::SurfaceFormat::B8G8R8A8;
  28       }
  29       break;
  30     case 24:
  31       if (aVisual->red_mask == 0xff0000 && aVisual->green_mask == 0xff00 &&
  32           aVisual->blue_mask == 0xff) {
  33         return gfx::SurfaceFormat::B8G8R8X8;
  34       }
  35       break;
  36     case 16:
  37       if (aVisual->red_mask == 0xf800 && aVisual->green_mask == 0x07e0 &&
  38           aVisual->blue_mask == 0x1f) {
  39         return gfx::SurfaceFormat::R5G6B5_UINT16;
  40       }
  41       break;
  42   }
  43
  44   return gfx::SurfaceFormat::UNKNOWN;
  45 }
  46
  47 }  // namespace mozilla::widget