Quelle WinCompositorWidget.cpp Sprache: C

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "WinCompositorWidget.h"

#include "mozilla/StaticPrefs_layers.h"
#include "mozilla/gfx/DeviceManagerDx.h"
#include "mozilla/gfx/Point.h"
#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/webrender/RenderThread.h"
#include "mozilla/widget/PlatformWidgetTypes.h"
#include "nsWindow.h"
#include "VsyncDispatcher.h"
#include "WinCompositorWindowThread.h"
#include "VRShMem.h"

#include <ddraw.h>

namespace mozilla {
namespace widget {

using namespace mozilla::gfx;
using namespace mozilla;

WinCompositorWidget::WinCompositorWidget(
    const WinCompositorWidgetInitData& aInitData,
    const layers::CompositorOptions& aOptions)
    : CompositorWidget(aOptions),
      mSetParentCompleted(false),
      mWidgetKey(aInitData.widgetKey()),
      mWnd(reinterpret_cast<HWND>(aInitData.hWnd())),
      mTransparencyMode(uint32_t(aInitData.transparencyMode())),
      mCompositorWnds(nullptr, nullptr) {
  MOZ_ASSERT(mWnd && ::IsWindow(mWnd));
}

WinCompositorWidget::~WinCompositorWidget() { DestroyCompositorWindow(); }

uintptr_t WinCompositorWidget::GetWidgetKey() { return mWidgetKey; }

void WinCompositorWidget::EnsureCompositorWindow() {
  if (mCompositorWnds.mCompositorWnd || mCompositorWnds.mInitialParentWnd) {
    return;
  }

  mCompositorWnds = WinCompositorWindowThread::CreateCompositorWindow();
  UpdateCompositorWnd(mCompositorWnds.mCompositorWnd, mWnd);

  MOZ_ASSERT(mCompositorWnds.mCompositorWnd);
  MOZ_ASSERT(mCompositorWnds.mInitialParentWnd);
}

void WinCompositorWidget::DestroyCompositorWindow() {
  if (!mCompositorWnds.mCompositorWnd && !mCompositorWnds.mInitialParentWnd) {
    return;
  }
  WinCompositorWindowThread::DestroyCompositorWindow(mCompositorWnds);
  mCompositorWnds = WinCompositorWnds(nullptr, nullptr);
}

void WinCompositorWidget::UpdateCompositorWndSizeIfNecessary() {
  if (!mCompositorWnds.mCompositorWnd) {
    return;
  }

  LayoutDeviceIntSize size = GetClientSize();
  if (mLastCompositorWndSize == size) {
    return;
  }

  // This code is racing with the compositor, which needs to reparent the
  // compositor surface to the actual window (mWnd). To avoid racing mutations,
  // we refuse to proceed until ::SetParent() is called in the parent process.
  // After the ::SetParent() call, composition is scheduled in
  // CompositorWidgetParent::UpdateCompositorWnd().
  if (!mSetParentCompleted) {
    // ::SetParent() is not completed yet.
    return;
  }

  MOZ_ASSERT(mWnd == ::GetParent(mCompositorWnds.mCompositorWnd));

  // Force a resize and redraw (but not a move, activate, etc.).
  if (!::SetWindowPos(
          mCompositorWnds.mCompositorWnd, nullptr, 0, 0, size.width,
          size.height,
          SWP_NOACTIVATE | SWP_NOCOPYBITS | SWP_NOOWNERZORDER | SWP_NOZORDER)) {
    return;
  }

  mLastCompositorWndSize = size;
}

// Creates a new instance of FxROutputHandler so that this compositor widget
// can send its output to Firefox Reality for Desktop.
void WinCompositorWidget::RequestFxrOutput() {
  MOZ_ASSERT(mFxrHandler == nullptr);

  mFxrHandler.reset(new FxROutputHandler());
}

}  // namespace widget
}  // namespace mozilla

quality100%

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.