skia2/include/utils/SkNWayCanvas.h
commit-bot@chromium.org 44c48d062f De-virtualize SkCanvas matrix ops.
This moves the matrix management logic into non-virtual SkCanvas
methods, and turns the virtuals into protected notifiers.

R=reed@google.com, robertphillips@google.com, bsalomon@google.com
BUG=skia:2297

Author: fmalita@chromium.org

Review URL: https://codereview.chromium.org/195793012

git-svn-id: http://skia.googlecode.com/svn/trunk@13799 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-03-13 20:03:58 +00:00

100 lines
4.5 KiB
C++

/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkNWayCanvas_DEFINED
#define SkNWayCanvas_DEFINED
#include "SkCanvas.h"
class SK_API SkNWayCanvas : public SkCanvas {
public:
SkNWayCanvas(int width, int height);
virtual ~SkNWayCanvas();
virtual void addCanvas(SkCanvas*);
virtual void removeCanvas(SkCanvas*);
virtual void removeAll();
///////////////////////////////////////////////////////////////////////////
// These are forwarded to the N canvases we're referencing
virtual void clear(SkColor) SK_OVERRIDE;
virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
const SkPaint&) SK_OVERRIDE;
virtual void drawRect(const SkRect&, const SkPaint&) SK_OVERRIDE;
virtual void drawOval(const SkRect&, const SkPaint&) SK_OVERRIDE;
virtual void drawRRect(const SkRRect&, const SkPaint&) SK_OVERRIDE;
virtual void drawPath(const SkPath& path, const SkPaint&) SK_OVERRIDE;
virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
const SkPaint*) SK_OVERRIDE;
virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
const SkRect& dst, const SkPaint* paint,
DrawBitmapRectFlags flags) SK_OVERRIDE;
virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
const SkPaint*) SK_OVERRIDE;
virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
const SkRect& dst,
const SkPaint* paint = NULL) SK_OVERRIDE;
virtual void drawSprite(const SkBitmap& bitmap, 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 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 drawTextOnPath(const void* text, size_t byteLength,
const SkPath& path, const SkMatrix* matrix,
const SkPaint&) SK_OVERRIDE;
virtual void drawPicture(SkPicture&) SK_OVERRIDE;
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&) SK_OVERRIDE;
virtual void drawData(const void* data, size_t length) SK_OVERRIDE;
virtual SkBounder* setBounder(SkBounder*) SK_OVERRIDE;
virtual SkDrawFilter* setDrawFilter(SkDrawFilter*) 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;
protected:
SkTDArray<SkCanvas*> fList;
virtual void willSave(SaveFlags) SK_OVERRIDE;
virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;
virtual void willRestore() SK_OVERRIDE;
virtual void didTranslate(SkScalar, SkScalar) SK_OVERRIDE;
virtual void didScale(SkScalar, SkScalar) SK_OVERRIDE;
virtual void didRotate(SkScalar) SK_OVERRIDE;
virtual void didSkew(SkScalar, SkScalar) SK_OVERRIDE;
virtual void didConcat(const SkMatrix&) SK_OVERRIDE;
virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE;
class Iter;
private:
typedef SkCanvas INHERITED;
};
#endif