1
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8#include "gm.h"
9
10namespace skiagm {
11
12static const char* gConfigNames[] = {
13    "unknown config",
14    "A1",
15    "A8",
16    "Index8",
17    "565",
18    "4444",
19    "8888"
20};
21
22SkBitmap::Config gConfigs[] = {
23  SkBitmap::kRGB_565_Config,
24  SkBitmap::kARGB_4444_Config,
25  SkBitmap::kARGB_8888_Config,
26};
27
28#define NUM_CONFIGS (sizeof(gConfigs) / sizeof(SkBitmap::Config))
29
30static void draw_checks(SkCanvas* canvas, int width, int height) {
31    SkPaint paint;
32    paint.setColor(SK_ColorRED);
33    canvas->drawRectCoords(0, 0, width / 2, height / 2, paint);
34    paint.setColor(SK_ColorGREEN);
35    canvas->drawRectCoords(width / 2, 0, width, height / 2, paint);
36    paint.setColor(SK_ColorBLUE);
37    canvas->drawRectCoords(0, height / 2, width / 2, height, paint);
38    paint.setColor(SK_ColorYELLOW);
39    canvas->drawRectCoords(width / 2, height / 2, width, height, paint);
40}
41
42class BitmapCopyGM : public GM {
43public:
44    SkBitmap    fDst[NUM_CONFIGS];
45
46    BitmapCopyGM() {
47        this->setBGColor(0xFFDDDDDD);
48    }
49
50protected:
51    virtual SkString onShortName() {
52        return SkString("bitmapcopy");
53    }
54
55    virtual SkISize onISize() {
56        return make_isize(540, 330);
57    }
58
59    virtual void onDraw(SkCanvas* canvas) {
60        SkPaint paint;
61        SkScalar horizMargin(SkIntToScalar(10));
62        SkScalar vertMargin(SkIntToScalar(10));
63
64        draw_checks(canvas, 40, 40);
65        SkBitmap src = canvas->getDevice()->accessBitmap(false);
66
67        for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
68            if (!src.deepCopyTo(&fDst[i], gConfigs[i])) {
69                src.copyTo(&fDst[i], gConfigs[i]);
70            }
71        }
72
73        canvas->clear(0xFFDDDDDD);
74        paint.setAntiAlias(true);
75        SkScalar width = SkIntToScalar(40);
76        SkScalar height = SkIntToScalar(40);
77        if (paint.getFontSpacing() > height) {
78            height = paint.getFontSpacing();
79        }
80        for (unsigned i = 0; i < NUM_CONFIGS; i++) {
81            const char* name = gConfigNames[src.config()];
82            SkScalar textWidth = paint.measureText(name, strlen(name));
83            if (textWidth > width) {
84                width = textWidth;
85            }
86        }
87        SkScalar horizOffset = width + horizMargin;
88        SkScalar vertOffset = height + vertMargin;
89        canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
90
91        for (unsigned i = 0; i < NUM_CONFIGS; i++) {
92            canvas->save();
93            // Draw destination config name
94            const char* name = gConfigNames[fDst[i].config()];
95            SkScalar textWidth = paint.measureText(name, strlen(name));
96            SkScalar x = (width - textWidth) / SkScalar(2);
97            SkScalar y = paint.getFontSpacing() / SkScalar(2);
98            canvas->drawText(name, strlen(name), x, y, paint);
99
100            // Draw destination bitmap
101            canvas->translate(0, vertOffset);
102            x = (width - 40) / SkScalar(2);
103            canvas->drawBitmap(fDst[i], x, 0, &paint);
104            canvas->restore();
105
106            canvas->translate(horizOffset, 0);
107        }
108    }
109
110    virtual uint32_t onGetFlags() const { return kSkipPicture_Flag; }
111
112private:
113    typedef GM INHERITED;
114};
115
116//////////////////////////////////////////////////////////////////////////////
117
118static GM* MyFactory(void*) { return new BitmapCopyGM; }
119static GMRegistry reg(MyFactory);
120
121}
122