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#include "SkGrPixelRef.h"
15
16class SkImage_Gpu : public SkImage_Base {
17public:
18    SK_DECLARE_INST_COUNT(SkImage_Gpu)
19
20    explicit SkImage_Gpu(const SkBitmap&);
21    virtual ~SkImage_Gpu();
22
23    virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*) SK_OVERRIDE;
24    virtual void onDrawRectToRect(SkCanvas*, const SkRect* src, const SkRect& dst, const SkPaint*) SK_OVERRIDE;
25    virtual GrTexture* onGetTexture() SK_OVERRIDE;
26    virtual bool getROPixels(SkBitmap*) const SK_OVERRIDE;
27
28    GrTexture* getTexture() { return fBitmap.getTexture(); }
29
30private:
31    SkBitmap    fBitmap;
32
33    typedef SkImage_Base INHERITED;
34};
35
36///////////////////////////////////////////////////////////////////////////////
37
38SkImage_Gpu::SkImage_Gpu(const SkBitmap& bitmap)
39    : INHERITED(bitmap.width(), bitmap.height())
40    , fBitmap(bitmap) {
41    SkASSERT(NULL != fBitmap.getTexture());
42}
43
44SkImage_Gpu::~SkImage_Gpu() {
45}
46
47void SkImage_Gpu::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
48                         const SkPaint* paint) {
49    canvas->drawBitmap(fBitmap, x, y, paint);
50}
51
52void SkImage_Gpu::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst,
53                         const SkPaint* paint) {
54    canvas->drawBitmapRectToRect(fBitmap, src, dst, paint);
55}
56
57GrTexture* SkImage_Gpu::onGetTexture() {
58    return fBitmap.getTexture();
59}
60
61bool SkImage_Gpu::getROPixels(SkBitmap* dst) const {
62    return fBitmap.copyTo(dst, kN32_SkColorType);
63}
64
65///////////////////////////////////////////////////////////////////////////////
66
67SkImage* SkImage::NewTexture(const SkBitmap& bitmap) {
68    if (NULL == bitmap.getTexture()) {
69        return NULL;
70    }
71
72    return SkNEW_ARGS(SkImage_Gpu, (bitmap));
73}
74
75GrTexture* SkTextureImageGetTexture(SkImage* image) {
76    return ((SkImage_Gpu*)image)->getTexture();
77}
78