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* gColorTypeNames[] = {
13 "unknown",
14 "A8",
15 "565",
16 "4444",
17 "8888",
18 "8888",
19 "Index8",
20 };
21
22 static const SkColorType gColorTypes[] = {
23 kRGB_565_SkColorType,
24 kARGB_4444_SkColorType,
25 kN32_SkColorType,
26 };
27
28 #define NUM_CONFIGS SK_ARRAY_COUNT(gColorTypes)
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(SkIntToScalar(0), SkIntToScalar(0),
34 SkIntToScalar(width / 2), SkIntToScalar(height / 2), paint);
35 paint.setColor(SK_ColorGREEN);
36 canvas->drawRectCoords(SkIntToScalar(width / 2), SkIntToScalar(0),
37 SkIntToScalar(width), SkIntToScalar(height / 2), paint);
38 paint.setColor(SK_ColorBLUE);
39 canvas->drawRectCoords(SkIntToScalar(0), SkIntToScalar(height / 2),
40 SkIntToScalar(width / 2), SkIntToScalar(height), paint);
41 paint.setColor(SK_ColorYELLOW);
42 canvas->drawRectCoords(SkIntToScalar(width / 2), SkIntToScalar(height / 2),
43 SkIntToScalar(width), SkIntToScalar(height), paint);
44 }
45
46 class BitmapCopyGM : public GM {
47 public:
48 SkBitmap fDst[NUM_CONFIGS];
49
BitmapCopyGM()50 BitmapCopyGM() {
51 this->setBGColor(0xFFDDDDDD);
52 }
53
54 protected:
onShortName()55 virtual SkString onShortName() {
56 return SkString("bitmapcopy");
57 }
58
onISize()59 virtual SkISize onISize() {
60 return SkISize::Make(540, 330);
61 }
62
onDraw(SkCanvas * canvas)63 virtual void onDraw(SkCanvas* canvas) {
64 SkPaint paint;
65 SkScalar horizMargin = 10;
66 SkScalar vertMargin = 10;
67
68 SkBitmap src;
69 src.allocN32Pixels(40, 40);
70 SkCanvas canvasTmp(src);
71
72 draw_checks(&canvasTmp, 40, 40);
73
74 for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
75 src.copyTo(&fDst[i], gColorTypes[i]);
76 }
77
78 canvas->clear(0xFFDDDDDD);
79 paint.setAntiAlias(true);
80 SkScalar width = SkIntToScalar(40);
81 SkScalar height = SkIntToScalar(40);
82 if (paint.getFontSpacing() > height) {
83 height = paint.getFontSpacing();
84 }
85 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
86 const char* name = gColorTypeNames[src.colorType()];
87 SkScalar textWidth = paint.measureText(name, strlen(name));
88 if (textWidth > width) {
89 width = textWidth;
90 }
91 }
92 SkScalar horizOffset = width + horizMargin;
93 SkScalar vertOffset = height + vertMargin;
94 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
95
96 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
97 canvas->save();
98 // Draw destination config name
99 const char* name = gColorTypeNames[fDst[i].colorType()];
100 SkScalar textWidth = paint.measureText(name, strlen(name));
101 SkScalar x = (width - textWidth) / SkScalar(2);
102 SkScalar y = paint.getFontSpacing() / SkScalar(2);
103 canvas->drawText(name, strlen(name), x, y, paint);
104
105 // Draw destination bitmap
106 canvas->translate(0, vertOffset);
107 x = (width - 40) / SkScalar(2);
108 canvas->drawBitmap(fDst[i], x, 0, &paint);
109 canvas->restore();
110
111 canvas->translate(horizOffset, 0);
112 }
113 }
114
onGetFlags() const115 virtual uint32_t onGetFlags() const { return kSkipPicture_Flag
116 | kSkipPipe_Flag; }
117
118 private:
119 typedef GM INHERITED;
120 };
121
122 //////////////////////////////////////////////////////////////////////////////
123
MyFactory(void *)124 static GM* MyFactory(void*) { return new BitmapCopyGM; }
125 static GMRegistry reg(MyFactory);
126 }
127