widget/gtk/WindowSurfaceX11SHM.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 "WindowSurfaceX11SHM.h"
   8
   9 namespace mozilla::widget {
  10
  11 WindowSurfaceX11SHM::WindowSurfaceX11SHM(Display* aDisplay, Drawable aWindow,
  12                                          Visual* aVisual, unsigned int aDepth) {
  13   mFrontImage = new nsShmImage(aDisplay, aWindow, aVisual, aDepth);
  14   mBackImage = new nsShmImage(aDisplay, aWindow, aVisual, aDepth);
  15 }
  16
  17 already_AddRefed<gfx::DrawTarget> WindowSurfaceX11SHM::Lock(
  18     const LayoutDeviceIntRegion& aRegion) {
  19   mBackImage.swap(mFrontImage);
  20   return mBackImage->CreateDrawTarget(aRegion);
  21 }
  22
  23 void WindowSurfaceX11SHM::Commit(const LayoutDeviceIntRegion& aInvalidRegion) {
  24   mBackImage->Put(aInvalidRegion);
  25 }
  26
  27 }  // namespace mozilla::widget