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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef RENDERNODE_H
#define RENDERNODE_H
#include <SkCamera.h>
#include <SkMatrix.h>
#include <utils/LinearAllocator.h>
#include <utils/RefBase.h>
#include <utils/String8.h>
#include <cutils/compiler.h>
#include <androidfw/ResourceTypes.h>
#include "AnimatorManager.h"
#include "Debug.h"
#include "DisplayList.h"
#include "Matrix.h"
#include "RenderProperties.h"
#include <vector>
class SkBitmap;
class SkPaint;
class SkPath;
class SkRegion;
namespace android {
namespace uirenderer {
class CanvasState;
class DisplayListCanvas;
class DisplayListOp;
class OpenGLRenderer;
class Rect;
class SkiaShader;
#if HWUI_NEW_OPS
class FrameBuilder;
class OffscreenBuffer;
struct RenderNodeOp;
typedef OffscreenBuffer layer_t;
typedef RenderNodeOp renderNodeOp_t;
#else
class Layer;
typedef Layer layer_t;
typedef DrawRenderNodeOp renderNodeOp_t;
#endif
class ClipRectOp;
class DrawRenderNodeOp;
class SaveLayerOp;
class SaveOp;
class RestoreToCountOp;
class TreeInfo;
namespace proto {
class RenderNode;
}
/**
* Primary class for storing recorded canvas commands, as well as per-View/ViewGroup display properties.
*
* Recording of canvas commands is somewhat similar to SkPicture, except the canvas-recording
* functionality is split between DisplayListCanvas (which manages the recording), DisplayList
* (which holds the actual data), and DisplayList (which holds properties and performs playback onto
* a renderer).
*
* Note that DisplayList is swapped out from beneath an individual RenderNode when a view's
* recorded stream of canvas operations is refreshed. The RenderNode (and its properties) stay
* attached.
*/
class RenderNode : public VirtualLightRefBase {
friend class TestUtils; // allow TestUtils to access syncDisplayList / syncProperties
friend class FrameBuilder;
public:
enum DirtyPropertyMask {
GENERIC = 1 << 1,
TRANSLATION_X = 1 << 2,
TRANSLATION_Y = 1 << 3,
TRANSLATION_Z = 1 << 4,
SCALE_X = 1 << 5,
SCALE_Y = 1 << 6,
ROTATION = 1 << 7,
ROTATION_X = 1 << 8,
ROTATION_Y = 1 << 9,
X = 1 << 10,
Y = 1 << 11,
Z = 1 << 12,
ALPHA = 1 << 13,
DISPLAY_LIST = 1 << 14,
};
ANDROID_API RenderNode();
ANDROID_API virtual ~RenderNode();
// See flags defined in DisplayList.java
enum ReplayFlag {
kReplayFlag_ClipChildren = 0x1
};
void debugDumpLayers(const char* prefix);
ANDROID_API void setStagingDisplayList(DisplayList* newData);
void computeOrdering();
void defer(DeferStateStruct& deferStruct, const int level);
void replay(ReplayStateStruct& replayStruct, const int level);
ANDROID_API void output(uint32_t level = 1);
ANDROID_API int getDebugSize();
void copyTo(proto::RenderNode* node);
bool isRenderable() const {
return mDisplayList && !mDisplayList->isEmpty();
}
bool hasProjectionReceiver() const {
return mDisplayList && mDisplayList->projectionReceiveIndex >= 0;
}
const char* getName() const {
return mName.string();
}
void setName(const char* name) {
if (name) {
char* lastPeriod = strrchr(name, '.');
if (lastPeriod) {
mName.setTo(lastPeriod + 1);
} else {
mName.setTo(name);
}
}
}
bool isPropertyFieldDirty(DirtyPropertyMask field) const {
return mDirtyPropertyFields & field;
}
void setPropertyFieldsDirty(uint32_t fields) {
mDirtyPropertyFields |= fields;
}
const RenderProperties& properties() const {
return mProperties;
}
RenderProperties& animatorProperties() {
return mProperties;
}
const RenderProperties& stagingProperties() {
return mStagingProperties;
}
RenderProperties& mutateStagingProperties() {
return mStagingProperties;
}
int getWidth() const {
return properties().getWidth();
}
int getHeight() const {
return properties().getHeight();
}
ANDROID_API virtual void prepareTree(TreeInfo& info);
void destroyHardwareResources();
// UI thread only!
ANDROID_API void addAnimator(const sp<BaseRenderNodeAnimator>& animator);
AnimatorManager& animators() { return mAnimatorManager; }
void applyViewPropertyTransforms(mat4& matrix, bool true3dTransform = false) const;
bool nothingToDraw() const {
const Outline& outline = properties().getOutline();
return mDisplayList == nullptr
|| properties().getAlpha() <= 0
|| (outline.getShouldClip() && outline.isEmpty())
|| properties().getScaleX() == 0
|| properties().getScaleY() == 0;
}
const DisplayList* getDisplayList() const {
return mDisplayList;
}
#if HWUI_NEW_OPS
OffscreenBuffer* getLayer() const { return mLayer; }
OffscreenBuffer** getLayerHandle() { return &mLayer; } // ugh...
#endif
class ANDROID_API PositionListener {
public:
virtual ~PositionListener() {}
virtual void onPositionUpdated(RenderNode& node, const TreeInfo& info) = 0;
};
// Note this is not thread safe, this needs to be called
// before the RenderNode is used for drawing.
// RenderNode takes ownership of the pointer
ANDROID_API void setPositionListener(PositionListener* listener) {
mPositionListener.reset(listener);
}
private:
typedef key_value_pair_t<float, DrawRenderNodeOp*> ZDrawRenderNodeOpPair;
static size_t findNonNegativeIndex(const std::vector<ZDrawRenderNodeOpPair>& nodes) {
for (size_t i = 0; i < nodes.size(); i++) {
if (nodes[i].key >= 0.0f) return i;
}
return nodes.size();
}
enum class ChildrenSelectMode {
NegativeZChildren,
PositiveZChildren
};
void computeOrderingImpl(renderNodeOp_t* opState,
std::vector<renderNodeOp_t*>* compositedChildrenOfProjectionSurface,
const mat4* transformFromProjectionSurface);
template <class T>
inline void setViewProperties(OpenGLRenderer& renderer, T& handler);
void buildZSortedChildList(const DisplayList::Chunk& chunk,
std::vector<ZDrawRenderNodeOpPair>& zTranslatedNodes);
template<class T>
inline void issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler);
template <class T>
inline void issueOperationsOf3dChildren(ChildrenSelectMode mode,
const Matrix4& initialTransform, const std::vector<ZDrawRenderNodeOpPair>& zTranslatedNodes,
OpenGLRenderer& renderer, T& handler);
template <class T>
inline void issueOperationsOfProjectedChildren(OpenGLRenderer& renderer, T& handler);
/**
* Issue the RenderNode's operations into a handler, recursing for subtrees through
* DrawRenderNodeOp's defer() or replay() methods
*/
template <class T>
inline void issueOperations(OpenGLRenderer& renderer, T& handler);
class TextContainer {
public:
size_t length() const {
return mByteLength;
}
const char* text() const {
return (const char*) mText;
}
size_t mByteLength;
const char* mText;
};
void syncProperties();
void syncDisplayList();
void prepareTreeImpl(TreeInfo& info, bool functorsNeedLayer);
void pushStagingPropertiesChanges(TreeInfo& info);
void pushStagingDisplayListChanges(TreeInfo& info);
void prepareSubTree(TreeInfo& info, bool functorsNeedLayer, DisplayList* subtree);
#if !HWUI_NEW_OPS
void applyLayerPropertiesToLayer(TreeInfo& info);
#endif
void prepareLayer(TreeInfo& info, uint32_t dirtyMask);
void pushLayerUpdate(TreeInfo& info);
void deleteDisplayList();
void damageSelf(TreeInfo& info);
void incParentRefCount() { mParentCount++; }
void decParentRefCount();
String8 mName;
uint32_t mDirtyPropertyFields;
RenderProperties mProperties;
RenderProperties mStagingProperties;
bool mNeedsDisplayListSync;
// WARNING: Do not delete this directly, you must go through deleteDisplayList()!
DisplayList* mDisplayList;
DisplayList* mStagingDisplayList;
friend class AnimatorManager;
AnimatorManager mAnimatorManager;
// Owned by RT. Lifecycle is managed by prepareTree(), with the exception
// being in ~RenderNode() which may happen on any thread.
layer_t* mLayer = nullptr;
/**
* Draw time state - these properties are only set and used during rendering
*/
// for projection surfaces, contains a list of all children items
std::vector<renderNodeOp_t*> mProjectedNodes;
// How many references our parent(s) have to us. Typically this should alternate
// between 2 and 1 (when a staging push happens we inc first then dec)
// When this hits 0 we are no longer in the tree, so any hardware resources
// (specifically Layers) should be released.
// This is *NOT* thread-safe, and should therefore only be tracking
// mDisplayList, not mStagingDisplayList.
uint32_t mParentCount;
std::unique_ptr<PositionListener> mPositionListener;
}; // class RenderNode
} /* namespace uirenderer */
} /* namespace android */
#endif /* RENDERNODE_H */