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/* -*- 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 "CompositorWidgetChild.h"
#include "mozilla/Unused.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/widget/CompositorWidgetVsyncObserver.h"
#include "mozilla/widget/PlatformWidgetTypes.h"
#include "nsBaseWidget.h"
#include "VsyncDispatcher.h"
#include "gfxPlatform.h"
#include "RemoteBackbuffer.h"
namespace mozilla {
namespace widget {
CompositorWidgetChild::CompositorWidgetChild(
RefPtr<CompositorVsyncDispatcher> aVsyncDispatcher,
RefPtr<CompositorWidgetVsyncObserver> aVsyncObserver,
const CompositorWidgetInitData& aInitData)
: mVsyncDispatcher(aVsyncDispatcher),
mVsyncObserver(aVsyncObserver),
mCompositorWnd(nullptr),
mWnd(reinterpret_cast<HWND>(
aInitData.get_WinCompositorWidgetInitData().hWnd())),
mTransparencyMode(
aInitData.get_WinCompositorWidgetInitData().transparencyMode()),
mRemoteBackbufferProvider() {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(!gfxPlatform::IsHeadless());
MOZ_ASSERT(mWnd && ::IsWindow(mWnd));
}
CompositorWidgetChild::~CompositorWidgetChild() {}
bool CompositorWidgetChild::Initialize() {
mRemoteBackbufferProvider = std::make_unique<remote_backbuffer::Provider>();
if (!mRemoteBackbufferProvider->Initialize(mWnd, OtherPid(),
mTransparencyMode)) {
return false;
}
auto maybeRemoteHandles = mRemoteBackbufferProvider->CreateRemoteHandles();
if (!maybeRemoteHandles) {
return false;
}
Unused << SendInitialize(*maybeRemoteHandles);
return true;
}
void CompositorWidgetChild::EnterPresentLock() {
Unused << SendEnterPresentLock();
}
void CompositorWidgetChild::LeavePresentLock() {
Unused << SendLeavePresentLock();
}
void CompositorWidgetChild::OnDestroyWindow() {}
bool CompositorWidgetChild::OnWindowResize(const LayoutDeviceIntSize& aSize) {
return true;
}
void CompositorWidgetChild::OnWindowModeChange(nsSizeMode aSizeMode) {}
void CompositorWidgetChild::UpdateTransparency(nsTransparencyMode aMode) {
mTransparencyMode = aMode;
mRemoteBackbufferProvider->UpdateTransparencyMode(aMode);
Unused << SendUpdateTransparency(aMode);
}
void CompositorWidgetChild::ClearTransparentWindow() {
Unused << SendClearTransparentWindow();
}
mozilla::ipc::IPCResult CompositorWidgetChild::RecvObserveVsync() {
mVsyncDispatcher->SetCompositorVsyncObserver(mVsyncObserver);
return IPC_OK();
}
mozilla::ipc::IPCResult CompositorWidgetChild::RecvUnobserveVsync() {
mVsyncDispatcher->SetCompositorVsyncObserver(nullptr);
return IPC_OK();
}
mozilla::ipc::IPCResult CompositorWidgetChild::RecvUpdateCompositorWnd(
const WindowsHandle& aCompositorWnd, const WindowsHandle& aParentWnd,
UpdateCompositorWndResolver&& aResolve) {
HWND parentWnd = reinterpret_cast<HWND>(aParentWnd);
if (mWnd == parentWnd) {
mCompositorWnd = reinterpret_cast<HWND>(aCompositorWnd);
::SetParent(mCompositorWnd, mWnd);
aResolve(true);
} else {
aResolve(false);
gfxCriticalNote << "Parent winow does not match";
MOZ_ASSERT_UNREACHABLE("unexpected to happen");
}
return IPC_OK();
}
} // namespace widget
} // namespace mozilla