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Commit cae05e0b authored by Derek Sollenberger's avatar Derek Sollenberger
Browse files

Move Canvas.h to a new location so that it can be shared with HWUI. 

Bug: 15672762
Change-Id: Ia59e986cd4034e16b2e54e8d594e6941a6c9fb1b
parent ed1391a9

core/jni/android/graphics/Canvas.h

+3 −127
Original line number Diff line number Diff line
@@ -14,130 +14,6 @@ 
 * limitations under the License.

 */



#ifndef ANDROID_GRAPHICS_CANVAS_H

#define ANDROID_GRAPHICS_CANVAS_H



#include "SkBitmap.h"

#include "SkCanvas.h"

#include "SkMatrix.h"



namespace android {



class Canvas {

public:

    virtual ~Canvas() {};



    static Canvas* create_canvas(SkBitmap* bitmap);

    static Canvas* create_canvas(SkCanvas* skiaCanvas);



    // TODO: enable HWUI to either create similar canvas wrapper or subclass

    //       directly from Canvas

    //static Canvas* create_canvas(uirenderer::Renderer* renderer);



    // TODO: this is a temporary affordance until all necessary logic can be

    //       moved within this interface! Further, the return value should

    //       NOT be unref'd and is valid until this canvas is destroyed or a

    //       new bitmap is set.

    virtual SkCanvas* getSkCanvas() = 0;



    virtual void setBitmap(SkBitmap* bitmap, bool copyState) = 0;



    virtual bool isOpaque() = 0;

    virtual int width() = 0;

    virtual int height() = 0;



// ----------------------------------------------------------------------------

// Canvas state operations

// ----------------------------------------------------------------------------

    // Save (layer)

    virtual int getSaveCount() const = 0;

    virtual int save(SkCanvas::SaveFlags flags) = 0;

    virtual void restore() = 0;

    virtual void restoreToCount(int saveCount) = 0;



    virtual int saveLayer(float left, float top, float right, float bottom,

                const SkPaint* paint, SkCanvas::SaveFlags flags) = 0;

    virtual int saveLayerAlpha(float left, float top, float right, float bottom,

            int alpha, SkCanvas::SaveFlags flags) = 0;



    // Matrix

    virtual void getMatrix(SkMatrix* outMatrix) const = 0;

    virtual void setMatrix(const SkMatrix& matrix) = 0;



    virtual void concat(const SkMatrix& matrix) = 0;

    virtual void rotate(float degrees) = 0;

    virtual void scale(float sx, float sy) = 0;

    virtual void skew(float sx, float sy) = 0;

    virtual void translate(float dx, float dy) = 0;



    // clip

    virtual bool getClipBounds(SkRect* outRect) const = 0;

    virtual bool quickRejectRect(float left, float top, float right, float bottom) const = 0;

    virtual bool quickRejectPath(const SkPath& path) const = 0;



    virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op) = 0;

    virtual bool clipPath(const SkPath* path, SkRegion::Op op) = 0;

    virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) = 0;



    // filters

    virtual SkDrawFilter* getDrawFilter() = 0;

    virtual void setDrawFilter(SkDrawFilter* drawFilter) = 0;



// ----------------------------------------------------------------------------

// Canvas draw operations

// ----------------------------------------------------------------------------

    virtual void drawColor(int color, SkXfermode::Mode mode) = 0;

    virtual void drawPaint(const SkPaint& paint) = 0;



    // Geometry

    virtual void drawPoint(float x, float y, const SkPaint& paint) = 0;

    virtual void drawPoints(const float* points, int count, const SkPaint& paint) = 0;

    virtual void drawLine(float startX, float startY, float stopX, float stopY,

                const SkPaint& paint) = 0;

    virtual void drawLines(const float* points, int count, const SkPaint& paint) = 0;

    virtual void drawRect(float left, float top, float right, float bottom,

            const SkPaint& paint) = 0;

    virtual void drawRoundRect(float left, float top, float right, float bottom,

            float rx, float ry, const SkPaint& paint) = 0;

    virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) = 0;

    virtual void drawOval(float left, float top, float right, float bottom,

            const SkPaint& paint) = 0;

    virtual void drawArc(float left, float top, float right, float bottom,

            float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) = 0;

    virtual void drawPath(const SkPath& path, const SkPaint& paint) = 0;

    virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount,

                              const float* verts, const float* tex, const int* colors,

                              const uint16_t* indices, int indexCount, const SkPaint& paint) = 0;



    // Bitmap-based

    virtual void drawBitmap(const SkBitmap& bitmap, float left, float top,

            const SkPaint* paint) = 0;

    virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,

            const SkPaint* paint) = 0;

    virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,

            float srcRight, float srcBottom, float dstLeft, float dstTop,

            float dstRight, float dstBottom, const SkPaint* paint) = 0;

    virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,

            const float* vertices, const int* colors, const SkPaint* paint) = 0;



    // Text

    virtual void drawText(const uint16_t* text, const float* positions, int count,

            const SkPaint& paint, float x, float y,

            float boundsLeft, float boundsTop, float boundsRight, float boundsBottom) = 0;

    virtual void drawPosText(const uint16_t* text, const float* positions, int count,

            int posCount, const SkPaint& paint) = 0;

    virtual void drawTextOnPath(const uint16_t* glyphs, int count, const SkPath& path,

            float hOffset, float vOffset, const SkPaint& paint) = 0;



    /*

     * Specifies if the positions passed to ::drawText are absolute or relative

     * to the (x,y) value provided.

     *

     * If true the (x,y) values are ignored. Otherwise, those (x,y) values need

     * to be added to each glyph's position to get its absolute position.

     */

    virtual bool drawTextAbsolutePos() const = 0;

};



}; // namespace android

#endif // ANDROID_GRAPHICS_CANVAS_H
 
// This header is shared with other libraries and as such is located in a

// separate directory.

#include <private/graphics/Canvas.h>

include/private/graphics/Canvas.h

0 → 100644
+143 −0
Original line number Diff line number Diff line 
/*

 * 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 ANDROID_GRAPHICS_CANVAS_H

#define ANDROID_GRAPHICS_CANVAS_H



#include "SkBitmap.h"

#include "SkCanvas.h"

#include "SkMatrix.h"



namespace android {



class Canvas {

public:

    virtual ~Canvas() {};



    static Canvas* create_canvas(SkBitmap* bitmap);

    static Canvas* create_canvas(SkCanvas* skiaCanvas);



    // TODO: enable HWUI to either create similar canvas wrapper or subclass

    //       directly from Canvas

    //static Canvas* create_canvas(uirenderer::Renderer* renderer);



    // TODO: this is a temporary affordance until all necessary logic can be

    //       moved within this interface! Further, the return value should

    //       NOT be unref'd and is valid until this canvas is destroyed or a

    //       new bitmap is set.

    virtual SkCanvas* getSkCanvas() = 0;



    virtual void setBitmap(SkBitmap* bitmap, bool copyState) = 0;



    virtual bool isOpaque() = 0;

    virtual int width() = 0;

    virtual int height() = 0;



// ----------------------------------------------------------------------------

// Canvas state operations

// ----------------------------------------------------------------------------

    // Save (layer)

    virtual int getSaveCount() const = 0;

    virtual int save(SkCanvas::SaveFlags flags) = 0;

    virtual void restore() = 0;

    virtual void restoreToCount(int saveCount) = 0;



    virtual int saveLayer(float left, float top, float right, float bottom,

                const SkPaint* paint, SkCanvas::SaveFlags flags) = 0;

    virtual int saveLayerAlpha(float left, float top, float right, float bottom,

            int alpha, SkCanvas::SaveFlags flags) = 0;



    // Matrix

    virtual void getMatrix(SkMatrix* outMatrix) const = 0;

    virtual void setMatrix(const SkMatrix& matrix) = 0;



    virtual void concat(const SkMatrix& matrix) = 0;

    virtual void rotate(float degrees) = 0;

    virtual void scale(float sx, float sy) = 0;

    virtual void skew(float sx, float sy) = 0;

    virtual void translate(float dx, float dy) = 0;



    // clip

    virtual bool getClipBounds(SkRect* outRect) const = 0;

    virtual bool quickRejectRect(float left, float top, float right, float bottom) const = 0;

    virtual bool quickRejectPath(const SkPath& path) const = 0;



    virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op) = 0;

    virtual bool clipPath(const SkPath* path, SkRegion::Op op) = 0;

    virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) = 0;



    // filters

    virtual SkDrawFilter* getDrawFilter() = 0;

    virtual void setDrawFilter(SkDrawFilter* drawFilter) = 0;



// ----------------------------------------------------------------------------

// Canvas draw operations

// ----------------------------------------------------------------------------

    virtual void drawColor(int color, SkXfermode::Mode mode) = 0;

    virtual void drawPaint(const SkPaint& paint) = 0;



    // Geometry

    virtual void drawPoint(float x, float y, const SkPaint& paint) = 0;

    virtual void drawPoints(const float* points, int count, const SkPaint& paint) = 0;

    virtual void drawLine(float startX, float startY, float stopX, float stopY,

                const SkPaint& paint) = 0;

    virtual void drawLines(const float* points, int count, const SkPaint& paint) = 0;

    virtual void drawRect(float left, float top, float right, float bottom,

            const SkPaint& paint) = 0;

    virtual void drawRoundRect(float left, float top, float right, float bottom,

            float rx, float ry, const SkPaint& paint) = 0;

    virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) = 0;

    virtual void drawOval(float left, float top, float right, float bottom,

            const SkPaint& paint) = 0;

    virtual void drawArc(float left, float top, float right, float bottom,

            float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) = 0;

    virtual void drawPath(const SkPath& path, const SkPaint& paint) = 0;

    virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount,

                              const float* verts, const float* tex, const int* colors,

                              const uint16_t* indices, int indexCount, const SkPaint& paint) = 0;



    // Bitmap-based

    virtual void drawBitmap(const SkBitmap& bitmap, float left, float top,

            const SkPaint* paint) = 0;

    virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,

            const SkPaint* paint) = 0;

    virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,

            float srcRight, float srcBottom, float dstLeft, float dstTop,

            float dstRight, float dstBottom, const SkPaint* paint) = 0;

    virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,

            const float* vertices, const int* colors, const SkPaint* paint) = 0;



    // Text

    virtual void drawText(const uint16_t* text, const float* positions, int count,

            const SkPaint& paint, float x, float y,

            float boundsLeft, float boundsTop, float boundsRight, float boundsBottom) = 0;

    virtual void drawPosText(const uint16_t* text, const float* positions, int count,

            int posCount, const SkPaint& paint) = 0;

    virtual void drawTextOnPath(const uint16_t* glyphs, int count, const SkPath& path,

            float hOffset, float vOffset, const SkPaint& paint) = 0;



    /*

     * Specifies if the positions passed to ::drawText are absolute or relative

     * to the (x,y) value provided.

     *

     * If true the (x,y) values are ignored. Otherwise, those (x,y) values need

     * to be added to each glyph's position to get its absolute position.

     */

    virtual bool drawTextAbsolutePos() const = 0;

};



}; // namespace android

#endif // ANDROID_GRAPHICS_CANVAS_H