gecko-dev/widget/CompositorWidget.cpp
Sylvestre Ledru 265e672179 Bug 1511181 - Reformat everything to the Google coding style r=ehsan a=clang-format
# ignore-this-changeset

--HG--
extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
2018-11-30 11:46:48 +01:00

75 lines
2.6 KiB
C++

/* 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 "CompositorWidget.h"
#include "GLConsts.h"
#include "nsBaseWidget.h"
#include "VsyncDispatcher.h"
namespace mozilla {
namespace widget {
CompositorWidget::CompositorWidget(const layers::CompositorOptions& aOptions)
: mOptions(aOptions) {}
CompositorWidget::~CompositorWidget() {}
already_AddRefed<gfx::DrawTarget> CompositorWidget::StartRemoteDrawing() {
return nullptr;
}
void CompositorWidget::CleanupRemoteDrawing() { mLastBackBuffer = nullptr; }
already_AddRefed<gfx::DrawTarget> CompositorWidget::GetBackBufferDrawTarget(
gfx::DrawTarget* aScreenTarget, const LayoutDeviceIntRect& aRect,
const LayoutDeviceIntRect& aClearRect) {
MOZ_ASSERT(aScreenTarget);
gfx::SurfaceFormat format =
aScreenTarget->GetFormat() == gfx::SurfaceFormat::B8G8R8X8
? gfx::SurfaceFormat::B8G8R8X8
: gfx::SurfaceFormat::B8G8R8A8;
gfx::IntSize size = aRect.ToUnknownRect().Size();
gfx::IntSize clientSize(GetClientSize().ToUnknownSize());
RefPtr<gfx::DrawTarget> target;
// Re-use back buffer if possible
if (mLastBackBuffer &&
mLastBackBuffer->GetBackendType() == aScreenTarget->GetBackendType() &&
mLastBackBuffer->GetFormat() == format &&
size <= mLastBackBuffer->GetSize() &&
mLastBackBuffer->GetSize() <= clientSize) {
target = mLastBackBuffer;
target->SetTransform(gfx::Matrix());
if (!aClearRect.IsEmpty()) {
gfx::IntRect clearRect =
aClearRect.ToUnknownRect() - aRect.ToUnknownRect().TopLeft();
target->ClearRect(gfx::Rect(clearRect.X(), clearRect.Y(),
clearRect.Width(), clearRect.Height()));
}
} else {
target = aScreenTarget->CreateSimilarDrawTarget(size, format);
mLastBackBuffer = target;
}
return target.forget();
}
already_AddRefed<gfx::SourceSurface> CompositorWidget::EndBackBufferDrawing() {
RefPtr<gfx::SourceSurface> surface =
mLastBackBuffer ? mLastBackBuffer->Snapshot() : nullptr;
return surface.forget();
}
uint32_t CompositorWidget::GetGLFrameBufferFormat() { return LOCAL_GL_RGBA; }
RefPtr<VsyncObserver> CompositorWidget::GetVsyncObserver() const {
// This should only used when the widget is in the GPU process, and should be
// implemented by IPDL-enabled CompositorWidgets.
// GPU process does not have a CompositorVsyncDispatcher.
MOZ_ASSERT_UNREACHABLE("Must be implemented by derived class");
return nullptr;
}
} // namespace widget
} // namespace mozilla