widget/InProcessCompositorWidget.h
author Jan Henning <jh+bugzilla@buttercookie.de>
Fri, 11 Jan 2019 21:21:41 +0000
changeset 453568 0355f47af6ceab050018e9c27fc9d9c4bb944662
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1517976 - Test that resetting WindowUtils.isFirstPaint doesn't clobber APZ scroll position. r=botond We need to setup a case where the visual viewport is smaller than the layout viewport. Faking a pinch zoom through touch events is imprecise, whereas calling windowUtils.setResolutionAndScaleTo(value > 1) to simulate the equivalent effect of a pinch-zoom on the page led to the subsequent scroll attempt failing quite often even after calling waitForApzFlushedRepaints(). So instead, we set up a very wide layout viewport through the meta viewport tag, which on Desktop means additionally enabling the dom.meta-viewport.enabled pref. Differential Revision: https://phabricator.services.mozilla.com/D15791

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_widget_InProcessCompositorWidget_h__
#define mozilla_widget_InProcessCompositorWidget_h__

#include "CompositorWidget.h"

namespace mozilla {
namespace widget {

// This version of CompositorWidget implements a wrapper around
// nsBaseWidget.
class InProcessCompositorWidget : public CompositorWidget {
 public:
  explicit InProcessCompositorWidget(const layers::CompositorOptions& aOptions,
                                     nsBaseWidget* aWidget);

  virtual bool PreRender(WidgetRenderingContext* aManager) override;
  virtual void PostRender(WidgetRenderingContext* aManager) override;
  virtual void DrawWindowUnderlay(WidgetRenderingContext* aContext,
                                  LayoutDeviceIntRect aRect) override;
  virtual void DrawWindowOverlay(WidgetRenderingContext* aContext,
                                 LayoutDeviceIntRect aRect) override;
  virtual already_AddRefed<gfx::DrawTarget> StartRemoteDrawing() override;
  virtual already_AddRefed<gfx::DrawTarget> StartRemoteDrawingInRegion(
      LayoutDeviceIntRegion& aInvalidRegion,
      layers::BufferMode* aBufferMode) override;
  virtual void EndRemoteDrawing() override;
  virtual void EndRemoteDrawingInRegion(
      gfx::DrawTarget* aDrawTarget,
      LayoutDeviceIntRegion& aInvalidRegion) override;
  virtual void CleanupRemoteDrawing() override;
  virtual void CleanupWindowEffects() override;
  virtual bool InitCompositor(layers::Compositor* aCompositor) override;
  virtual LayoutDeviceIntSize GetClientSize() override;
  virtual uint32_t GetGLFrameBufferFormat() override;
  virtual void ObserveVsync(VsyncObserver* aObserver) override;
  virtual uintptr_t GetWidgetKey() override;

  // If you can override this method, inherit from CompositorWidget instead.
  nsIWidget* RealWidget() override;

 protected:
  nsBaseWidget* mWidget;
};

}  // namespace widget
}  // namespace mozilla

#endif