/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKDEBUGCANVAS_H_
#define SKDEBUGCANVAS_H_
#include "SkCanvas.h"
#include "SkDrawCommand.h"
#include "SkPathOps.h"
#include "SkPicture.h"
#include "SkTArray.h"
#include "SkString.h"
class SkNWayCanvas;
class SK_API SkDebugCanvas : public SkCanvas {
public:
SkDebugCanvas(int width, int height);
virtual ~SkDebugCanvas();
void toggleFilter(bool toggle) { fFilter = toggle; }
void setMegaVizMode(bool megaVizMode) { fMegaVizMode = megaVizMode; }
bool getMegaVizMode() const { return fMegaVizMode; }
/**
* Enable or disable overdraw visualization
*/
void setOverdrawViz(bool overdrawViz);
bool getOverdrawViz() const { return fOverdrawViz; }
bool getAllowSimplifyClip() const { return fAllowSimplifyClip; }
void setPicture(SkPicture* picture) { fPicture = picture; }
/**
* Enable or disable texure filtering override
*/
void overrideTexFiltering(bool overrideTexFiltering, SkFilterQuality);
/**
Executes all draw calls to the canvas.
@param canvas The canvas being drawn to
*/
void draw(SkCanvas* canvas);
/**
Executes the draw calls up to the specified index.
@param canvas The canvas being drawn to
@param index The index of the final command being executed
*/
void drawTo(SkCanvas* canvas, int index);
/**
Returns the most recently calculated transformation matrix
*/
const SkMatrix& getCurrentMatrix() {
return fMatrix;
}
/**
Returns the most recently calculated clip
*/
const SkIRect& getCurrentClip() {
return fClip;
}
/**
Returns the index of the last draw command to write to the pixel at (x,y)
*/
int getCommandAtPoint(int x, int y, int index);
/**
Removes the command at the specified index
@param index The index of the command to delete
*/
void deleteDrawCommandAt(int index);
/**
Returns the draw command at the given index.
@param index The index of the command
*/
SkDrawCommand* getDrawCommandAt(int index);
/**
Sets the draw command for a given index.
@param index The index to overwrite
@param command The new command
*/
void setDrawCommandAt(int index, SkDrawCommand* command);
/**
Returns information about the command at the given index.
@param index The index of the command
*/
const SkTDArray<SkString*>* getCommandInfo(int index) const;
/**
Returns the visibility of the command at the given index.
@param index The index of the command
*/
bool getDrawCommandVisibilityAt(int index);
/**
Returns the vector of draw commands
*/
SK_ATTR_DEPRECATED("please use getDrawCommandAt and getSize instead")
const SkTDArray<SkDrawCommand*>& getDrawCommands() const;
/**
Returns the vector of draw commands. Do not use this entry
point - it is going away!
*/
SkTDArray<SkDrawCommand*>& getDrawCommands();
/**
Returns length of draw command vector.
*/
int getSize() const {
return fCommandVector.count();
}
/**
Toggles the visibility / execution of the draw command at index i with
the value of toggle.
*/
void toggleCommand(int index, bool toggle);
void setUserMatrix(SkMatrix matrix) {
fUserMatrix = matrix;
}
SkString clipStackData() const { return fClipStackData; }
////////////////////////////////////////////////////////////////////////////////
// Inherited from SkCanvas
////////////////////////////////////////////////////////////////////////////////
void beginCommentGroup(const char* description) override;
void addComment(const char* kywd, const char* value) override;
void endCommentGroup() override;
static const int kVizImageHeight = 256;
static const int kVizImageWidth = 256;
bool isClipEmpty() const override { return false; }
bool isClipRect() const override { return true; }
bool getClipBounds(SkRect* bounds) const override {
if (bounds) {
bounds->setXYWH(0, 0,
SkIntToScalar(this->imageInfo().width()),
SkIntToScalar(this->imageInfo().height()));
}
return true;
}
bool getClipDeviceBounds(SkIRect* bounds) const override {
if (bounds) {
bounds->setLargest();
}
return true;
}
protected:
void willSave() override;
SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) override;
void willRestore() override;
void didConcat(const SkMatrix&) override;
void didSetMatrix(const SkMatrix&) override;
void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
const SkPaint&) override;
void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
const SkPaint&) override;
void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
SkScalar constY, const SkPaint&) override;
void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
const SkMatrix* matrix, const SkPaint&) override;
void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
const SkPaint& paint) override;
void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint);
void onDrawPaint(const SkPaint&) override;
void onDrawRect(const SkRect&, const SkPaint&) override;
void onDrawOval(const SkRect&, const SkPaint&) override;
void onDrawRRect(const SkRRect&, const SkPaint&) override;
void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
void onDrawVertices(VertexMode vmode, int vertexCount,
const SkPoint vertices[], const SkPoint texs[],
const SkColor colors[], SkXfermode* xmode,
const uint16_t indices[], int indexCount,
const SkPaint&) override;
void onDrawPath(const SkPath&, const SkPaint&) override;
void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
DrawBitmapRectFlags flags) override;
void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
const SkPaint*) override;
void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
const SkPaint*) override;
void onDrawSprite(const SkBitmap&, int left, int top, const SkPaint*) override;
void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) override;
void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) override;
void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) override;
void onClipRegion(const SkRegion& region, SkRegion::Op) override;
void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
void markActiveCommands(int index);
private:
SkTDArray<SkDrawCommand*> fCommandVector;
SkPicture* fPicture;
bool fFilter;
bool fMegaVizMode;
SkMatrix fUserMatrix;
SkMatrix fMatrix;
SkIRect fClip;
SkString fClipStackData;
bool fCalledAddStackData;
SkPath fSaveDevPath;
bool fOverdrawViz;
bool fOverrideFilterQuality;
SkFilterQuality fFilterQuality;
SkAutoTUnref<SkNWayCanvas> fPaintFilterCanvas;
/**
The active saveLayer commands at a given point in the renderering.
Only used when "mega" visualization is enabled.
*/
SkTDArray<SkDrawCommand*> fActiveLayers;
/**
Adds the command to the classes vector of commands.
@param command The draw command for execution
*/
void addDrawCommand(SkDrawCommand* command);
/**
Applies any panning and zooming the user has specified before
drawing anything else into the canvas.
*/
void applyUserTransform(SkCanvas* canvas);
void resetClipStackData() { fClipStackData.reset(); fCalledAddStackData = false; }
void addClipStackData(const SkPath& devPath, const SkPath& operand, SkRegion::Op elementOp);
void addPathData(const SkPath& path, const char* pathName);
bool lastClipStackData(const SkPath& devPath);
void outputConicPoints(const SkPoint* pts, SkScalar weight);
void outputPoints(const SkPoint* pts, int count);
void outputPointsCommon(const SkPoint* pts, int count);
void outputScalar(SkScalar num);
void updatePaintFilterCanvas();
typedef SkCanvas INHERITED;
};
#endif