1 /*
2 * Copyright 2011 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 "gm.h"
9 #include "sk_tool_utils.h"
10 #include "SkFont.h"
11
12 namespace skiagm {
13
color_type_name(SkColorType colorType)14 static const char* color_type_name(SkColorType colorType) {
15 switch (colorType) {
16 case kUnknown_SkColorType: return "unknown";
17 case kAlpha_8_SkColorType: return "A8";
18 case kRGB_565_SkColorType: return "565";
19 case kARGB_4444_SkColorType: return "4444";
20 case kRGBA_8888_SkColorType: return "8888";
21 case kRGB_888x_SkColorType: return "888x";
22 case kBGRA_8888_SkColorType: return "8888";
23 case kRGBA_1010102_SkColorType: return "1010102";
24 case kRGB_101010x_SkColorType: return "101010x";
25 case kGray_8_SkColorType: return "G8";
26 case kRGBA_F16_SkColorType: return "F16";
27 case kRGBA_F32_SkColorType: return "F32";
28 }
29 return "";
30 }
31
32 constexpr SkColorType gColorTypes[] = {
33 kRGB_565_SkColorType,
34 kARGB_4444_SkColorType,
35 kN32_SkColorType,
36 };
37
38 #define NUM_CONFIGS SK_ARRAY_COUNT(gColorTypes)
39
draw_checks(SkCanvas * canvas,int width,int height)40 static void draw_checks(SkCanvas* canvas, int width, int height) {
41 SkPaint paint;
42 paint.setColor(SK_ColorRED);
43 canvas->drawRect(SkRect::MakeIWH(width/2, height/2), paint);
44 paint.setColor(SK_ColorGREEN);
45 canvas->drawRect({ SkIntToScalar(width/2), 0, SkIntToScalar(width), SkIntToScalar(height/2) },
46 paint);
47 paint.setColor(SK_ColorBLUE);
48 canvas->drawRect({ 0, SkIntToScalar(height/2), SkIntToScalar(width/2), SkIntToScalar(height) },
49 paint);
50 paint.setColor(SK_ColorYELLOW);
51 canvas->drawRect({ SkIntToScalar(width/2), SkIntToScalar(height/2), SkIntToScalar(width),
52 SkIntToScalar(height) }, paint);
53 }
54
55 class BitmapCopyGM : public GM {
56 public:
57 SkBitmap fDst[NUM_CONFIGS];
58
BitmapCopyGM()59 BitmapCopyGM() {
60 this->setBGColor(0xFFDDDDDD);
61 }
62
63 protected:
onShortName()64 virtual SkString onShortName() {
65 return SkString("bitmapcopy");
66 }
67
onISize()68 virtual SkISize onISize() {
69 return SkISize::Make(540, 330);
70 }
71
onDraw(SkCanvas * canvas)72 virtual void onDraw(SkCanvas* canvas) {
73 SkPaint paint;
74 SkScalar horizMargin = 10;
75 SkScalar vertMargin = 10;
76
77 SkBitmap src;
78 src.allocN32Pixels(40, 40, kOpaque_SkAlphaType);
79 SkCanvas canvasTmp(src);
80
81 draw_checks(&canvasTmp, 40, 40);
82
83 for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
84 sk_tool_utils::copy_to(&fDst[i], gColorTypes[i], src);
85 }
86
87 canvas->clear(0xFFDDDDDD);
88 paint.setAntiAlias(true);
89
90 SkFont font(sk_tool_utils::create_portable_typeface());
91
92 SkScalar width = SkIntToScalar(40);
93 SkScalar height = SkIntToScalar(40);
94 if (font.getSpacing() > height) {
95 height = font.getSpacing();
96 }
97 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
98 const char* name = color_type_name(src.colorType());
99 SkScalar textWidth = font.measureText(name, strlen(name), kUTF8_SkTextEncoding);
100 if (textWidth > width) {
101 width = textWidth;
102 }
103 }
104 SkScalar horizOffset = width + horizMargin;
105 SkScalar vertOffset = height + vertMargin;
106 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
107
108 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
109 canvas->save();
110 // Draw destination config name
111 const char* name = color_type_name(fDst[i].colorType());
112 SkScalar textWidth = font.measureText(name, strlen(name), kUTF8_SkTextEncoding);
113 SkScalar x = (width - textWidth) / SkScalar(2);
114 SkScalar y = font.getSpacing() / SkScalar(2);
115 canvas->drawSimpleText(name, strlen(name), kUTF8_SkTextEncoding, x, y, font, paint);
116
117 // Draw destination bitmap
118 canvas->translate(0, vertOffset);
119 x = (width - 40) / SkScalar(2);
120 canvas->drawBitmap(fDst[i], x, 0, &paint);
121 canvas->restore();
122
123 canvas->translate(horizOffset, 0);
124 }
125 }
126
127 private:
128 typedef GM INHERITED;
129 };
130
131 //////////////////////////////////////////////////////////////////////////////
132
133 DEF_GM( return new BitmapCopyGM; )
134 }
135