зеркало из https://github.com/mozilla/gecko-dev.git
133 строки
3.3 KiB
C++
133 строки
3.3 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 "ImageLayerMLGPU.h"
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#include "LayerManagerMLGPU.h"
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namespace mozilla {
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using namespace gfx;
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namespace layers {
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ImageLayerMLGPU::ImageLayerMLGPU(LayerManagerMLGPU* aManager)
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: ImageLayer(aManager, static_cast<HostLayer*>(this))
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, TexturedLayerMLGPU(aManager)
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{
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}
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ImageLayerMLGPU::~ImageLayerMLGPU()
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{
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CleanupResources();
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}
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void
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ImageLayerMLGPU::ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
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{
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Matrix4x4 local = GetLocalTransform();
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// Snap image edges to pixel boundaries.
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gfxRect sourceRect(0, 0, 0, 0);
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if (mHost && mHost->IsAttached()) {
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IntSize size = mHost->GetImageSize();
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sourceRect.SizeTo(size.width, size.height);
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}
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// Snap our local transform first, and snap the inherited transform as well.
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// This makes our snapping equivalent to what would happen if our content
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// was drawn into a PaintedLayer (gfxContext would snap using the local
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// transform, then we'd snap again when compositing the PaintedLayer).
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mEffectiveTransform =
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SnapTransform(local, sourceRect, nullptr) *
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SnapTransformTranslation(aTransformToSurface, nullptr);
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mEffectiveTransformForBuffer = mEffectiveTransform;
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if (mScaleMode == ScaleMode::STRETCH &&
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mScaleToSize.width != 0.0 &&
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mScaleToSize.height != 0.0)
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{
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Size scale(sourceRect.Width() / mScaleToSize.width,
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sourceRect.Height() / mScaleToSize.height);
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mScale = Some(scale);
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}
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ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
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}
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gfx::SamplingFilter
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ImageLayerMLGPU::GetSamplingFilter()
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{
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return ImageLayer::GetSamplingFilter();
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}
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bool
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ImageLayerMLGPU::IsContentOpaque()
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{
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if (mPictureRect.Width() == 0 || mPictureRect.Height() == 0) {
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return false;
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}
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if (mScaleMode == ScaleMode::STRETCH) {
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return gfx::IsOpaque(mHost->CurrentTextureHost()->GetFormat());
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}
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return false;
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}
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void
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ImageLayerMLGPU::SetRenderRegion(LayerIntRegion&& aRegion)
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{
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switch (mScaleMode) {
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case ScaleMode::STRETCH:
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// See bug 1264142.
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aRegion.AndWith(LayerIntRect(0, 0, mScaleToSize.width, mScaleToSize.height));
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break;
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default:
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// Clamp the visible region to the texture size. (see bug 1396507)
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MOZ_ASSERT(mScaleMode == ScaleMode::SCALE_NONE);
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aRegion.AndWith(LayerIntRect(0, 0, mPictureRect.Width(), mPictureRect.Height()));
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break;
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}
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LayerMLGPU::SetRenderRegion(std::move(aRegion));
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}
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void
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ImageLayerMLGPU::CleanupResources()
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{
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if (mHost) {
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mHost->CleanupResources();
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mHost->Detach(this);
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}
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mTexture = nullptr;
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mBigImageTexture = nullptr;
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mHost = nullptr;
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}
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void
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ImageLayerMLGPU::PrintInfo(std::stringstream& aStream, const char* aPrefix)
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{
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ImageLayer::PrintInfo(aStream, aPrefix);
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if (mHost && mHost->IsAttached()) {
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aStream << "\n";
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nsAutoCString pfx(aPrefix);
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pfx += " ";
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mHost->PrintInfo(aStream, pfx.get());
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}
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}
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void
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ImageLayerMLGPU::Disconnect()
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{
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CleanupResources();
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}
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void
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ImageLayerMLGPU::ClearCachedResources()
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{
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CleanupResources();
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}
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} // namespace layers
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} // namespace mozilla
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