grab from latest android
git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/SkDumpCanvas.h b/include/utils/SkDumpCanvas.h
new file mode 100644
index 0000000..b919627
--- /dev/null
+++ b/include/utils/SkDumpCanvas.h
@@ -0,0 +1,139 @@
+#ifndef SkDumpCanvas_DEFINED
+#define SkDumpCanvas_DEFINED
+
+#include "SkCanvas.h"
+
+/** This class overrides all the draw methods on SkCanvas, and formats them
+ as text, and then sends that to a Dumper helper object.
+
+ Typical use might be to dump a display list to a log file to see what is
+ being drawn.
+ */
+class SkDumpCanvas : public SkCanvas {
+public:
+ class Dumper;
+
+ explicit SkDumpCanvas(Dumper* = 0);
+ virtual ~SkDumpCanvas();
+
+ enum Verb {
+ kNULL_Verb,
+
+ kSave_Verb,
+ kRestore_Verb,
+
+ kMatrix_Verb,
+
+ kClip_Verb,
+
+ kDrawPaint_Verb,
+ kDrawPoints_Verb,
+ kDrawRect_Verb,
+ kDrawPath_Verb,
+ kDrawBitmap_Verb,
+ kDrawText_Verb,
+ kDrawPicture_Verb,
+ kDrawVertices_Verb
+ };
+
+ /** Subclasses of this are installed on the DumpCanvas, and then called for
+ each drawing command.
+ */
+ class Dumper : public SkRefCnt {
+ public:
+ virtual void dump(SkDumpCanvas*, SkDumpCanvas::Verb, const char str[],
+ const SkPaint*) = 0;
+ };
+
+ Dumper* getDumper() const { return fDumper; }
+ void setDumper(Dumper*);
+
+ // overrides from SkCanvas
+
+ virtual int save(SaveFlags flags = kMatrixClip_SaveFlag);
+ virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
+ SaveFlags flags = kARGB_ClipLayer_SaveFlag);
+ virtual void restore();
+
+ virtual bool translate(SkScalar dx, SkScalar dy);
+ virtual bool scale(SkScalar sx, SkScalar sy);
+ virtual bool rotate(SkScalar degrees);
+ virtual bool skew(SkScalar sx, SkScalar sy);
+ virtual bool concat(const SkMatrix& matrix);
+ virtual void setMatrix(const SkMatrix& matrix);
+
+ virtual bool clipRect(const SkRect& rect,
+ SkRegion::Op op = SkRegion::kIntersect_Op);
+ virtual bool clipPath(const SkPath& path,
+ SkRegion::Op op = SkRegion::kIntersect_Op);
+ virtual bool clipRegion(const SkRegion& deviceRgn,
+ SkRegion::Op op = SkRegion::kIntersect_Op);
+
+ virtual void drawPaint(const SkPaint& paint);
+ virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
+ const SkPaint& paint);
+ virtual void drawRect(const SkRect& rect, const SkPaint& paint);
+ virtual void drawPath(const SkPath& path, const SkPaint& paint);
+ virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
+ const SkPaint* paint = NULL);
+ virtual void drawBitmapRect(const SkBitmap& bitmap, const SkIRect* src,
+ const SkRect& dst, const SkPaint* paint = NULL);
+ virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
+ const SkPaint* paint = NULL);
+ virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
+ const SkPaint* paint = NULL);
+ virtual void drawText(const void* text, size_t byteLength, SkScalar x,
+ SkScalar y, const SkPaint& paint);
+ virtual void drawPosText(const void* text, size_t byteLength,
+ const SkPoint pos[], const SkPaint& paint);
+ virtual void drawPosTextH(const void* text, size_t byteLength,
+ const SkScalar xpos[], SkScalar constY,
+ const SkPaint& paint);
+ virtual void drawTextOnPath(const void* text, size_t byteLength,
+ const SkPath& path, const SkMatrix* matrix,
+ const SkPaint& paint);
+ virtual void drawPicture(SkPicture& picture);
+ virtual void drawVertices(VertexMode vmode, int vertexCount,
+ const SkPoint vertices[], const SkPoint texs[],
+ const SkColor colors[], SkXfermode* xmode,
+ const uint16_t indices[], int indexCount,
+ const SkPaint& paint);
+
+private:
+ Dumper* fDumper;
+
+ void dump(Verb, const SkPaint*, const char format[], ...);
+
+ typedef SkCanvas INHERITED;
+};
+
+/** Formats the draw commands, and send them to a function-pointer provided
+ by the caller.
+ */
+class SkFormatDumper : public SkDumpCanvas::Dumper {
+public:
+ SkFormatDumper(void (*)(const char text[], void* refcon), void* refcon);
+
+ // override from baseclass that does the formatting, and in turn calls
+ // the function pointer that was passed to the constructor
+ virtual void dump(SkDumpCanvas*, SkDumpCanvas::Verb, const char str[],
+ const SkPaint*);
+
+private:
+ void (*fProc)(const char*, void*);
+ void* fRefcon;
+
+ typedef SkDumpCanvas::Dumper INHERITED;
+};
+
+/** Subclass of Dumper that dumps the drawing command to SkDebugf
+ */
+class SkDebugfDumper : public SkFormatDumper {
+public:
+ SkDebugfDumper();
+
+private:
+ typedef SkFormatDumper INHERITED;
+};
+
+#endif