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/*
* 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 "SkPicture.h"
#include "SkTArray.h"
#include "SkString.h"
class SkTexOverrideFilter;
class SK_API SkDebugCanvas : public SkCanvas {
public:
SkDebugCanvas(int width, int height);
virtual ~SkDebugCanvas();
void toggleFilter(bool toggle);
/**
* Enable or disable overdraw visualization
*/
void setOverdrawViz(bool overdrawViz) { fOverdrawViz = overdrawViz; }
/**
* Enable or disable texure filtering override
*/
void overrideTexFiltering(bool overrideTexFiltering, SkPaint::FilterLevel level);
/**
Executes all draw calls to the canvas.
@param canvas The canvas being drawn to
*/
void draw(SkCanvas* canvas);
/**
Executes the draw calls in the specified range.
@param canvas The canvas being drawn to
@param i The beginning of the range
@param j The end of the range
TODO(chudy): Implement
*/
void drawRange(SkCanvas* canvas, int i, int j);
/**
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
*/
SkTDArray<SkString*>* getCommandInfo(int index);
/**
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
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 the string vector of draw commands
*/
SkTArray<SkString>* getDrawCommandsAsStrings() const;
/**
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 setBounds(int width, int height) {
fWidth = width;
fHeight = height;
}
void setUserMatrix(SkMatrix matrix) {
fUserMatrix = matrix;
}
////////////////////////////////////////////////////////////////////////////////
// Inherited from SkCanvas
////////////////////////////////////////////////////////////////////////////////
virtual void clear(SkColor) SK_OVERRIDE;
virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE;
virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE;
virtual bool clipRRect(const SkRRect& rrect,
SkRegion::Op op = SkRegion::kIntersect_Op,
bool doAntiAlias = false) SK_OVERRIDE;
virtual bool clipRegion(const SkRegion& region, SkRegion::Op op) SK_OVERRIDE;
virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
virtual void drawBitmap(const SkBitmap&, SkScalar left, SkScalar top,
const SkPaint*) SK_OVERRIDE;
virtual void drawBitmapRectToRect(const SkBitmap&, const SkRect* src,
const SkRect& dst, const SkPaint* paint,
DrawBitmapRectFlags flags) SK_OVERRIDE;
virtual void drawBitmapMatrix(const SkBitmap&, const SkMatrix&,
const SkPaint*) SK_OVERRIDE;
virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
const SkRect& dst, const SkPaint*) SK_OVERRIDE;
virtual void drawData(const void*, size_t) SK_OVERRIDE;
virtual void beginCommentGroup(const char* description) SK_OVERRIDE;
virtual void addComment(const char* kywd, const char* value) SK_OVERRIDE;
virtual void endCommentGroup() SK_OVERRIDE;
virtual void drawOval(const SkRect& oval, const SkPaint&) SK_OVERRIDE;
virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
virtual void drawPath(const SkPath& path, const SkPaint&) SK_OVERRIDE;
virtual void drawPicture(SkPicture& picture) SK_OVERRIDE;
virtual void drawPoints(PointMode, size_t count, const SkPoint pts[],
const SkPaint&) SK_OVERRIDE;
virtual void drawPosText(const void* text, size_t byteLength,
const SkPoint pos[], const SkPaint&) SK_OVERRIDE;
virtual void drawPosTextH(const void* text, size_t byteLength,
const SkScalar xpos[], SkScalar constY,
const SkPaint&) SK_OVERRIDE;
virtual void drawRect(const SkRect& rect, const SkPaint&) SK_OVERRIDE;
virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) SK_OVERRIDE;
virtual void drawSprite(const SkBitmap&, int left, int top,
const SkPaint*) SK_OVERRIDE;
virtual void drawText(const void* text, size_t byteLength, SkScalar x,
SkScalar y, const SkPaint&) SK_OVERRIDE;
virtual void drawTextOnPath(const void* text, size_t byteLength,
const SkPath& path, const SkMatrix* matrix,
const SkPaint&) SK_OVERRIDE;
virtual void drawVertices(VertexMode, int vertexCount,
const SkPoint vertices[], const SkPoint texs[],
const SkColor colors[], SkXfermode*,
const uint16_t indices[], int indexCount,
const SkPaint&) SK_OVERRIDE;
virtual void restore() SK_OVERRIDE;
virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
virtual int save(SaveFlags) SK_OVERRIDE;
virtual int saveLayer(const SkRect* bounds, const SkPaint*, SaveFlags) SK_OVERRIDE;
virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE;
virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
static const int kVizImageHeight = 256;
static const int kVizImageWidth = 256;
private:
SkTDArray<SkDrawCommand*> fCommandVector;
int fHeight;
int fWidth;
SkBitmap fBm;
bool fFilter;
int fIndex;
SkMatrix fUserMatrix;
SkMatrix fMatrix;
SkIRect fClip;
bool fOverdrawViz;
SkDrawFilter* fOverdrawFilter;
bool fOverrideTexFiltering;
SkTexOverrideFilter* fTexOverrideFilter;
/**
Number of unmatched save() calls at any point during a draw.
If there are any saveLayer() calls outstanding, we need to resolve
all of them, which in practice means resolving all save() calls,
to avoid corruption of our canvas.
*/
int fOutstandingSaveCount;
/**
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);
typedef SkCanvas INHERITED;
};
#endif