зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
3.9 KiB
C++
117 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "X11BasicCompositor.h"
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#include "gfxPlatform.h"
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#include "gfx2DGlue.h"
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#include "gfxXlibSurface.h"
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#include "gfxImageSurface.h"
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#include "mozilla/X11Util.h"
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namespace mozilla {
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using namespace mozilla::gfx;
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namespace layers {
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bool X11DataTextureSourceBasic::Update(gfx::DataSourceSurface* aSurface,
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nsIntRegion* aDestRegion,
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gfx::IntPoint* aSrcOffset) {
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// Reallocate our internal X11 surface if we don't have a DrawTarget yet,
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// or if we changed surface size or format since last update.
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if (!mBufferDrawTarget ||
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(aSurface->GetSize() != mBufferDrawTarget->GetSize()) ||
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(aSurface->GetFormat() != mBufferDrawTarget->GetFormat())) {
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RefPtr<gfxASurface> surf;
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gfxImageFormat imageFormat =
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SurfaceFormatToImageFormat(aSurface->GetFormat());
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Display* display = DefaultXDisplay();
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Screen* screen = DefaultScreenOfDisplay(display);
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XRenderPictFormat* xrenderFormat =
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gfxXlibSurface::FindRenderFormat(display, imageFormat);
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if (xrenderFormat) {
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surf = gfxXlibSurface::Create(screen, xrenderFormat, aSurface->GetSize());
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}
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if (!surf) {
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NS_WARNING("Couldn't create native surface, fallback to image surface");
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surf = new gfxImageSurface(aSurface->GetSize(), imageFormat);
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}
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mBufferDrawTarget =
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gfxPlatform::CreateDrawTargetForSurface(surf, aSurface->GetSize());
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}
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// Image contents have changed, upload to our DrawTarget
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// If aDestRegion is null, means we're updating the whole surface
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// Note : Incremental update with a source offset is only used on Mac.
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NS_ASSERTION(!aSrcOffset,
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"SrcOffset should not be used with linux OMTC basic");
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if (aDestRegion) {
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for (auto iter = aDestRegion->RectIter(); !iter.Done(); iter.Next()) {
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const IntRect& rect = iter.Get();
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IntRect srcRect(rect.X(), rect.Y(), rect.Width(), rect.Height());
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IntPoint dstPoint(rect.X(), rect.Y());
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// We're uploading regions to our buffer, so let's just copy contents over
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mBufferDrawTarget->CopySurface(aSurface, srcRect, dstPoint);
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}
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} else {
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// We're uploading the whole buffer, so let's just copy the full surface
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IntSize size = aSurface->GetSize();
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mBufferDrawTarget->CopySurface(
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aSurface, IntRect(0, 0, size.width, size.height), IntPoint(0, 0));
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}
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return true;
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}
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TextureSourceBasic* X11DataTextureSourceBasic::AsSourceBasic() { return this; }
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IntSize X11DataTextureSourceBasic::GetSize() const {
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if (!mBufferDrawTarget) {
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NS_WARNING("Trying to query the size of an uninitialized TextureSource");
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return IntSize(0, 0);
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}
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return mBufferDrawTarget->GetSize();
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}
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gfx::SurfaceFormat X11DataTextureSourceBasic::GetFormat() const {
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if (!mBufferDrawTarget) {
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NS_WARNING("Trying to query the format of an uninitialized TextureSource");
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return gfx::SurfaceFormat::UNKNOWN;
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}
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return mBufferDrawTarget->GetFormat();
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}
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SourceSurface* X11DataTextureSourceBasic::GetSurface(DrawTarget* aTarget) {
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RefPtr<gfx::SourceSurface> surface;
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if (mBufferDrawTarget) {
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surface = mBufferDrawTarget->Snapshot();
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return surface.get();
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}
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return nullptr;
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}
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void X11DataTextureSourceBasic::DeallocateDeviceData() {
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mBufferDrawTarget = nullptr;
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}
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already_AddRefed<DataTextureSource> X11BasicCompositor::CreateDataTextureSource(
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TextureFlags aFlags) {
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RefPtr<DataTextureSource> result = new X11DataTextureSourceBasic();
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return result.forget();
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}
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void X11BasicCompositor::EndFrame() {
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BasicCompositor::EndFrame();
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XFlush(DefaultXDisplay());
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}
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} // namespace layers
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} // namespace mozilla
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