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
10 namespace skiagm {
11
12 static const char* gConfigNames[] = {
13 "unknown config",
14 "A1",
15 "A8",
16 "Index8",
17 "565",
18 "4444",
19 "8888"
20 };
21
22 SkBitmap::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
draw_checks(SkCanvas * canvas,int width,int height)30 static 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
42 class BitmapCopyGM : public GM {
43 public:
44 SkBitmap fDst[NUM_CONFIGS];
45
BitmapCopyGM()46 BitmapCopyGM() {
47 this->setBGColor(0xFFDDDDDD);
48 }
49
50 protected:
onShortName()51 virtual SkString onShortName() {
52 return SkString("bitmapcopy");
53 }
54
onISize()55 virtual SkISize onISize() {
56 return make_isize(540, 330);
57 }
58
onDraw(SkCanvas * canvas)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
onGetFlags() const110 virtual uint32_t onGetFlags() const { return kSkipPicture_Flag; }
111
112 private:
113 typedef GM INHERITED;
114 };
115
116 //////////////////////////////////////////////////////////////////////////////
117
MyFactory(void *)118 static GM* MyFactory(void*) { return new BitmapCopyGM; }
119 static GMRegistry reg(MyFactory);
120
121 }
122