/usr/include/thunderbird/ClientTiledPaintedLayer.h is in thunderbird-dev 1:52.8.0-1~deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | /* 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/. */
#ifndef GFX_CLIENTTILEDPAINTEDLAYER_H
#define GFX_CLIENTTILEDPAINTEDLAYER_H
#include "ClientLayerManager.h" // for ClientLayer, etc
#include "Layers.h" // for PaintedLayer, etc
#include "mozilla/RefPtr.h" // for RefPtr
#include "mozilla/layers/TiledContentClient.h"
#include "nsDebug.h" // for NS_RUNTIMEABORT
#include "nsRegion.h" // for nsIntRegion
namespace mozilla {
namespace layers {
class ShadowableLayer;
class SpecificLayerAttributes;
/**
* An implementation of PaintedLayer that ONLY supports remote
* composition that is backed by tiles. This painted layer implementation
* is better suited to mobile hardware to work around slow implementation
* of glTexImage2D (for OGL compositors), and restrait memory bandwidth.
*
* Tiled PaintedLayers use a different protocol compared with other
* layers. A copy of the tiled buffer is made and sent to the compositing
* thread via the layers protocol. Tiles are uploaded by the buffers
* asynchonously without using IPC, that means they are not safe for cross-
* process use (bug 747811). Each tile has a TextureHost/Client pair but
* they communicate directly rather than using the Texture protocol.
*
* There is no ContentClient for tiled layers. There is a ContentHost, however.
*/
class ClientTiledPaintedLayer : public PaintedLayer,
public ClientLayer
{
typedef PaintedLayer Base;
public:
explicit ClientTiledPaintedLayer(ClientLayerManager* const aManager,
ClientLayerManager::PaintedLayerCreationHint aCreationHint = LayerManager::NONE);
protected:
~ClientTiledPaintedLayer();
virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
public:
// Override name to distinguish it from ClientPaintedLayer in layer dumps
virtual const char* Name() const override { return "TiledPaintedLayer"; }
// PaintedLayer
virtual Layer* AsLayer() override { return this; }
virtual void InvalidateRegion(const nsIntRegion& aRegion) override {
mInvalidRegion.Add(aRegion);
nsIntRegion invalidRegion = mInvalidRegion.GetRegion();
mValidRegion.Sub(mValidRegion, invalidRegion);
mLowPrecisionValidRegion.Sub(mLowPrecisionValidRegion, invalidRegion);
}
// Shadow methods
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs) override;
virtual ShadowableLayer* AsShadowableLayer() override { return this; }
virtual void Disconnect() override
{
ClientLayer::Disconnect();
}
virtual void RenderLayer() override;
virtual void ClearCachedResources() override;
virtual void HandleMemoryPressure() override
{
if (mContentClient) {
mContentClient->HandleMemoryPressure();
}
}
/**
* Helper method to find the nearest ancestor layers which
* scroll and have a displayport. The parameters are out-params
* which hold the return values; the values passed in may be null.
*/
void GetAncestorLayers(LayerMetricsWrapper* aOutScrollAncestor,
LayerMetricsWrapper* aOutDisplayPortAncestor,
bool* aOutHasTransformAnimation);
virtual bool IsOptimizedFor(LayerManager::PaintedLayerCreationHint aCreationHint) override;
private:
ClientLayerManager* ClientManager()
{
return static_cast<ClientLayerManager*>(mManager);
}
/**
* For the initial PaintThebes of a transaction, calculates all the data
* needed for that paint and any repeated transactions.
*/
void BeginPaint();
/**
* Check if the layer is being scrolled by APZ on the compositor.
*/
bool IsScrollingOnCompositor(const FrameMetrics& aParentMetrics);
/**
* Check if we should use progressive draw on this layer. We will
* disable progressive draw based on a preference or if the layer
* is not being scrolled.
*/
bool UseProgressiveDraw();
/**
* Helper function to do the high-precision paint.
* This function returns true if it updated the paint buffer.
*/
bool RenderHighPrecision(nsIntRegion& aInvalidRegion,
const nsIntRegion& aVisibleRegion,
LayerManager::DrawPaintedLayerCallback aCallback,
void* aCallbackData);
/**
* Helper function to do the low-precision paint.
* This function returns true if it updated the paint buffer.
*/
bool RenderLowPrecision(nsIntRegion& aInvalidRegion,
const nsIntRegion& aVisibleRegion,
LayerManager::DrawPaintedLayerCallback aCallback,
void* aCallbackData);
/**
* This causes the paint to be marked as finished, and updates any data
* necessary to persist until the next paint.
*/
void EndPaint();
RefPtr<TiledContentClient> mContentClient;
// Flag to indicate if mContentClient is a SingleTiledContentClient. This is
// only valid when mContentClient is non-null.
bool mHaveSingleTiledContentClient;
nsIntRegion mLowPrecisionValidRegion;
BasicTiledLayerPaintData mPaintData;
};
} // namespace layers
} // namespace mozilla
#endif
|