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1 /*
2  * Copyright 2012 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "SkImage_Base.h"
9 #include "SkImagePriv.h"
10 #include "SkBitmap.h"
11 #include "SkCanvas.h"
12 #include "GrContext.h"
13 #include "GrTexture.h"
14 
15 class SkImage_Gpu : public SkImage_Base {
16 public:
17     SK_DECLARE_INST_COUNT(SkImage_Gpu)
18 
19     explicit SkImage_Gpu(const SkBitmap&);
20     virtual ~SkImage_Gpu();
21 
22     virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*) const SK_OVERRIDE;
23     virtual void onDrawRectToRect(SkCanvas*, const SkRect* src, const SkRect& dst,
24                                   const SkPaint*) const SK_OVERRIDE;
25     virtual GrTexture* onGetTexture() const SK_OVERRIDE;
26     virtual bool getROPixels(SkBitmap*) const SK_OVERRIDE;
27 
getTexture() const28     GrTexture* getTexture() const { return fBitmap.getTexture(); }
29 
30     virtual SkShader* onNewShader(SkShader::TileMode,
31                                   SkShader::TileMode,
32                                   const SkMatrix* localMatrix) const SK_OVERRIDE;
33 
34     virtual bool isOpaque() const SK_OVERRIDE;
35 
36 private:
37     SkBitmap    fBitmap;
38 
39     typedef SkImage_Base INHERITED;
40 };
41 
42 ///////////////////////////////////////////////////////////////////////////////
43 
SkImage_Gpu(const SkBitmap & bitmap)44 SkImage_Gpu::SkImage_Gpu(const SkBitmap& bitmap)
45     : INHERITED(bitmap.width(), bitmap.height())
46     , fBitmap(bitmap) {
47     SkASSERT(fBitmap.getTexture());
48 }
49 
~SkImage_Gpu()50 SkImage_Gpu::~SkImage_Gpu() {
51 }
52 
onNewShader(SkShader::TileMode tileX,SkShader::TileMode tileY,const SkMatrix * localMatrix) const53 SkShader* SkImage_Gpu::onNewShader(SkShader::TileMode tileX,
54                                    SkShader::TileMode tileY,
55                                    const SkMatrix* localMatrix) const
56 {
57     return SkShader::CreateBitmapShader(fBitmap, tileX, tileY, localMatrix);
58 }
59 
onDraw(SkCanvas * canvas,SkScalar x,SkScalar y,const SkPaint * paint) const60 void SkImage_Gpu::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkPaint* paint) const {
61     canvas->drawBitmap(fBitmap, x, y, paint);
62 }
63 
onDrawRectToRect(SkCanvas * canvas,const SkRect * src,const SkRect & dst,const SkPaint * paint) const64 void SkImage_Gpu::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst,
65                                    const SkPaint* paint) const {
66     canvas->drawBitmapRectToRect(fBitmap, src, dst, paint);
67 }
68 
onGetTexture() const69 GrTexture* SkImage_Gpu::onGetTexture() const {
70     return fBitmap.getTexture();
71 }
72 
getROPixels(SkBitmap * dst) const73 bool SkImage_Gpu::getROPixels(SkBitmap* dst) const {
74     return fBitmap.copyTo(dst, kN32_SkColorType);
75 }
76 
isOpaque() const77 bool SkImage_Gpu::isOpaque() const {
78     return fBitmap.isOpaque();
79 }
80 
81 ///////////////////////////////////////////////////////////////////////////////
82 
NewTexture(const SkBitmap & bitmap)83 SkImage* SkImage::NewTexture(const SkBitmap& bitmap) {
84     if (NULL == bitmap.getTexture()) {
85         return NULL;
86     }
87 
88     return SkNEW_ARGS(SkImage_Gpu, (bitmap));
89 }
90 
SkTextureImageGetTexture(SkImage * image)91 GrTexture* SkTextureImageGetTexture(SkImage* image) {
92     return ((SkImage_Gpu*)image)->getTexture();
93 }
94