michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "ThebesLayerComposite.h"
michael@0: #include "CompositableHost.h"           // for TiledLayerProperties, etc
michael@0: #include "FrameMetrics.h"               // for FrameMetrics
michael@0: #include "Units.h"                      // for CSSRect, LayerPixel, etc
michael@0: #include "gfx2DGlue.h"                  // for ToMatrix4x4
michael@0: #include "gfxUtils.h"                   // for gfxUtils, etc
michael@0: #include "mozilla/Assertions.h"         // for MOZ_ASSERT, etc
michael@0: #include "mozilla/gfx/Matrix.h"         // for Matrix4x4
michael@0: #include "mozilla/gfx/Point.h"          // for Point
michael@0: #include "mozilla/gfx/Rect.h"           // for RoundedToInt, Rect
michael@0: #include "mozilla/gfx/Types.h"          // for Filter::Filter::LINEAR
michael@0: #include "mozilla/layers/Compositor.h"  // for Compositor
michael@0: #include "mozilla/layers/ContentHost.h"  // for ContentHost
michael@0: #include "mozilla/layers/Effects.h"     // for EffectChain
michael@0: #include "mozilla/mozalloc.h"           // for operator delete
michael@0: #include "nsAString.h"
michael@0: #include "nsAutoPtr.h"                  // for nsRefPtr
michael@0: #include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR, etc
michael@0: #include "nsMathUtils.h"                // for NS_lround
michael@0: #include "nsPoint.h"                    // for nsIntPoint
michael@0: #include "nsRect.h"                     // for nsIntRect
michael@0: #include "nsSize.h"                     // for nsIntSize
michael@0: #include "nsString.h"                   // for nsAutoCString
michael@0: #include "TextRenderer.h"
michael@0: #include "GeckoProfiler.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class TiledLayerComposer;
michael@0: 
michael@0: ThebesLayerComposite::ThebesLayerComposite(LayerManagerComposite *aManager)
michael@0:   : ThebesLayer(aManager, nullptr)
michael@0:   , LayerComposite(aManager)
michael@0:   , mBuffer(nullptr)
michael@0:   , mRequiresTiledProperties(false)
michael@0: {
michael@0:   MOZ_COUNT_CTOR(ThebesLayerComposite);
michael@0:   mImplData = static_cast<LayerComposite*>(this);
michael@0: }
michael@0: 
michael@0: ThebesLayerComposite::~ThebesLayerComposite()
michael@0: {
michael@0:   MOZ_COUNT_DTOR(ThebesLayerComposite);
michael@0:   CleanupResources();
michael@0: }
michael@0: 
michael@0: bool
michael@0: ThebesLayerComposite::SetCompositableHost(CompositableHost* aHost)
michael@0: {
michael@0:   switch (aHost->GetType()) {
michael@0:     case BUFFER_CONTENT_INC:
michael@0:     case BUFFER_TILED:
michael@0:     case COMPOSITABLE_CONTENT_SINGLE:
michael@0:     case COMPOSITABLE_CONTENT_DOUBLE:
michael@0:       mBuffer = static_cast<ContentHost*>(aHost);
michael@0:       return true;
michael@0:     default:
michael@0:       return false;
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: ThebesLayerComposite::Disconnect()
michael@0: {
michael@0:   Destroy();
michael@0: }
michael@0: 
michael@0: void
michael@0: ThebesLayerComposite::Destroy()
michael@0: {
michael@0:   if (!mDestroyed) {
michael@0:     CleanupResources();
michael@0:     mDestroyed = true;
michael@0:   }
michael@0: }
michael@0: 
michael@0: Layer*
michael@0: ThebesLayerComposite::GetLayer()
michael@0: {
michael@0:   return this;
michael@0: }
michael@0: 
michael@0: TiledLayerComposer*
michael@0: ThebesLayerComposite::GetTiledLayerComposer()
michael@0: {
michael@0:   if (!mBuffer) {
michael@0:     return nullptr;
michael@0:   }
michael@0:   MOZ_ASSERT(mBuffer->IsAttached());
michael@0:   return mBuffer->AsTiledLayerComposer();
michael@0: }
michael@0: 
michael@0: LayerRenderState
michael@0: ThebesLayerComposite::GetRenderState()
michael@0: {
michael@0:   if (!mBuffer || !mBuffer->IsAttached() || mDestroyed) {
michael@0:     return LayerRenderState();
michael@0:   }
michael@0:   return mBuffer->GetRenderState();
michael@0: }
michael@0: 
michael@0: void
michael@0: ThebesLayerComposite::RenderLayer(const nsIntRect& aClipRect)
michael@0: {
michael@0:   if (!mBuffer || !mBuffer->IsAttached()) {
michael@0:     return;
michael@0:   }
michael@0:   PROFILER_LABEL("ThebesLayerComposite", "RenderLayer");
michael@0: 
michael@0:   MOZ_ASSERT(mBuffer->GetCompositor() == mCompositeManager->GetCompositor() &&
michael@0:              mBuffer->GetLayer() == this,
michael@0:              "buffer is corrupted");
michael@0: 
michael@0:   gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
michael@0: 
michael@0: #ifdef MOZ_DUMP_PAINTING
michael@0:   if (gfxUtils::sDumpPainting) {
michael@0:     RefPtr<gfx::DataSourceSurface> surf = mBuffer->GetAsSurface();
michael@0:     if (surf) {
michael@0:       WriteSnapshotToDumpFile(this, surf);
michael@0:     }
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   EffectChain effectChain(this);
michael@0:   LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
michael@0: 
michael@0:   nsIntRegion visibleRegion = GetEffectiveVisibleRegion();
michael@0: 
michael@0:   TiledLayerProperties tiledLayerProps;
michael@0:   if (mRequiresTiledProperties) {
michael@0:     tiledLayerProps.mVisibleRegion = visibleRegion;
michael@0:     tiledLayerProps.mEffectiveResolution = GetEffectiveResolution();
michael@0:     tiledLayerProps.mValidRegion = mValidRegion;
michael@0:   }
michael@0: 
michael@0:   mBuffer->SetPaintWillResample(MayResample());
michael@0: 
michael@0:   mBuffer->Composite(effectChain,
michael@0:                      GetEffectiveOpacity(),
michael@0:                      GetEffectiveTransform(),
michael@0:                      gfx::Filter::LINEAR,
michael@0:                      clipRect,
michael@0:                      &visibleRegion,
michael@0:                      mRequiresTiledProperties ? &tiledLayerProps
michael@0:                                               : nullptr);
michael@0:   mBuffer->BumpFlashCounter();
michael@0: 
michael@0:   if (mRequiresTiledProperties) {
michael@0:     mValidRegion = tiledLayerProps.mValidRegion;
michael@0:   }
michael@0: 
michael@0:   mCompositeManager->GetCompositor()->MakeCurrent();
michael@0: }
michael@0: 
michael@0: CompositableHost*
michael@0: ThebesLayerComposite::GetCompositableHost()
michael@0: {
michael@0:   if (mBuffer && mBuffer->IsAttached()) {
michael@0:     return mBuffer.get();
michael@0:   }
michael@0: 
michael@0:   return nullptr;
michael@0: }
michael@0: 
michael@0: void
michael@0: ThebesLayerComposite::CleanupResources()
michael@0: {
michael@0:   if (mBuffer) {
michael@0:     mBuffer->Detach(this);
michael@0:   }
michael@0:   mBuffer = nullptr;
michael@0: }
michael@0: 
michael@0: CSSToScreenScale
michael@0: ThebesLayerComposite::GetEffectiveResolution()
michael@0: {
michael@0:   for (ContainerLayer* parent = GetParent(); parent; parent = parent->GetParent()) {
michael@0:     const FrameMetrics& metrics = parent->GetFrameMetrics();
michael@0:     if (metrics.GetScrollId() != FrameMetrics::NULL_SCROLL_ID) {
michael@0:       return metrics.GetZoom();
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return CSSToScreenScale(1.0);
michael@0: }
michael@0: 
michael@0: nsACString&
michael@0: ThebesLayerComposite::PrintInfo(nsACString& aTo, const char* aPrefix)
michael@0: {
michael@0:   ThebesLayer::PrintInfo(aTo, aPrefix);
michael@0:   aTo += "\n";
michael@0:   if (mBuffer && mBuffer->IsAttached()) {
michael@0:     nsAutoCString pfx(aPrefix);
michael@0:     pfx += "  ";
michael@0:     mBuffer->PrintInfo(aTo, pfx.get());
michael@0:   }
michael@0:   return aTo;
michael@0: }
michael@0: 
michael@0: } /* layers */
michael@0: } /* mozilla */