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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "ImageLayerMLGPU.h"
#include "LayerManagerMLGPU.h"
namespace mozilla {
using namespace gfx;
namespace layers {
ImageLayerMLGPU::ImageLayerMLGPU(LayerManagerMLGPU* aManager)
: ImageLayer(aManager, static_cast<HostLayer*>(this)),
TexturedLayerMLGPU(aManager) {}
ImageLayerMLGPU::~ImageLayerMLGPU() { CleanupResources(); }
void ImageLayerMLGPU::ComputeEffectiveTransforms(
const gfx::Matrix4x4& aTransformToSurface) {
Matrix4x4 local = GetLocalTransform();
// Snap image edges to pixel boundaries.
gfxRect sourceRect(0, 0, 0, 0);
if (mHost && mHost->IsAttached()) {
IntSize size = mHost->GetImageSize();
sourceRect.SizeTo(size.width, size.height);
}
// Snap our local transform first, and snap the inherited transform as well.
// This makes our snapping equivalent to what would happen if our content
// was drawn into a PaintedLayer (gfxContext would snap using the local
// transform, then we'd snap again when compositing the PaintedLayer).
mEffectiveTransform = SnapTransform(local, sourceRect, nullptr) *
SnapTransformTranslation(aTransformToSurface, nullptr);
mEffectiveTransformForBuffer = mEffectiveTransform;
if (mScaleMode == ScaleMode::STRETCH && mScaleToSize.width != 0.0 &&
mScaleToSize.height != 0.0) {
Size scale(sourceRect.Width() / mScaleToSize.width,
sourceRect.Height() / mScaleToSize.height);
mScale = Some(scale);
}
ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
}
gfx::SamplingFilter ImageLayerMLGPU::GetSamplingFilter() {
return ImageLayer::GetSamplingFilter();
}
bool ImageLayerMLGPU::IsContentOpaque() {
if (mPictureRect.Width() == 0 || mPictureRect.Height() == 0) {
return false;
}
if (mScaleMode == ScaleMode::STRETCH) {
return gfx::IsOpaque(mHost->CurrentTextureHost()->GetFormat());
}
return false;
}
void ImageLayerMLGPU::SetRenderRegion(LayerIntRegion&& aRegion) {
switch (mScaleMode) {
case ScaleMode::STRETCH:
// See bug 1264142.
aRegion.AndWith(
LayerIntRect(0, 0, mScaleToSize.width, mScaleToSize.height));
break;
default:
// Clamp the visible region to the texture size. (see bug 1396507)
MOZ_ASSERT(mScaleMode == ScaleMode::SCALE_NONE);
aRegion.AndWith(
LayerIntRect(0, 0, mPictureRect.Width(), mPictureRect.Height()));
break;
}
LayerMLGPU::SetRenderRegion(std::move(aRegion));
}
void ImageLayerMLGPU::CleanupResources() {
if (mHost) {
mHost->CleanupResources();
mHost->Detach(this);
}
mTexture = nullptr;
mBigImageTexture = nullptr;
mHost = nullptr;
}
void ImageLayerMLGPU::PrintInfo(std::stringstream& aStream,
const char* aPrefix) {
ImageLayer::PrintInfo(aStream, aPrefix);
if (mHost && mHost->IsAttached()) {
aStream << "\n";
nsAutoCString pfx(aPrefix);
pfx += " ";
mHost->PrintInfo(aStream, pfx.get());
}
}
void ImageLayerMLGPU::Disconnect() { CleanupResources(); }
void ImageLayerMLGPU::ClearCachedResources() { CleanupResources(); }
} // namespace layers
} // namespace mozilla
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