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_F16Norm_SkColorType: return "F16Norm";
27 case kRGBA_F16_SkColorType: return "F16";
28 case kRGBA_F32_SkColorType: return "F32";
29 }
30 return "";
31 }
32
33 constexpr SkColorType gColorTypes[] = {
34 kRGB_565_SkColorType,
35 kARGB_4444_SkColorType,
36 kN32_SkColorType,
37 };
38
39 #define NUM_CONFIGS SK_ARRAY_COUNT(gColorTypes)
40
draw_checks(SkCanvas * canvas,int width,int height)41 static void draw_checks(SkCanvas* canvas, int width, int height) {
42 SkPaint paint;
43 paint.setColor(SK_ColorRED);
44 canvas->drawRect(SkRect::MakeIWH(width/2, height/2), paint);
45 paint.setColor(SK_ColorGREEN);
46 canvas->drawRect({ SkIntToScalar(width/2), 0, SkIntToScalar(width), SkIntToScalar(height/2) },
47 paint);
48 paint.setColor(SK_ColorBLUE);
49 canvas->drawRect({ 0, SkIntToScalar(height/2), SkIntToScalar(width/2), SkIntToScalar(height) },
50 paint);
51 paint.setColor(SK_ColorYELLOW);
52 canvas->drawRect({ SkIntToScalar(width/2), SkIntToScalar(height/2), SkIntToScalar(width),
53 SkIntToScalar(height) }, paint);
54 }
55
56 class BitmapCopyGM : public GM {
57 public:
58 SkBitmap fDst[NUM_CONFIGS];
59
BitmapCopyGM()60 BitmapCopyGM() {
61 this->setBGColor(0xFFDDDDDD);
62 }
63
64 protected:
onShortName()65 virtual SkString onShortName() {
66 return SkString("bitmapcopy");
67 }
68
onISize()69 virtual SkISize onISize() {
70 return SkISize::Make(540, 330);
71 }
72
onDraw(SkCanvas * canvas)73 virtual void onDraw(SkCanvas* canvas) {
74 SkPaint paint;
75 SkScalar horizMargin = 10;
76 SkScalar vertMargin = 10;
77
78 SkBitmap src;
79 src.allocN32Pixels(40, 40, kOpaque_SkAlphaType);
80 SkCanvas canvasTmp(src);
81
82 draw_checks(&canvasTmp, 40, 40);
83
84 for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
85 sk_tool_utils::copy_to(&fDst[i], gColorTypes[i], src);
86 }
87
88 canvas->clear(0xFFDDDDDD);
89 paint.setAntiAlias(true);
90
91 SkFont font(sk_tool_utils::create_portable_typeface());
92
93 SkScalar width = SkIntToScalar(40);
94 SkScalar height = SkIntToScalar(40);
95 if (font.getSpacing() > height) {
96 height = font.getSpacing();
97 }
98 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
99 const char* name = color_type_name(src.colorType());
100 SkScalar textWidth = font.measureText(name, strlen(name), kUTF8_SkTextEncoding);
101 if (textWidth > width) {
102 width = textWidth;
103 }
104 }
105 SkScalar horizOffset = width + horizMargin;
106 SkScalar vertOffset = height + vertMargin;
107 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
108
109 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
110 canvas->save();
111 // Draw destination config name
112 const char* name = color_type_name(fDst[i].colorType());
113 SkScalar textWidth = font.measureText(name, strlen(name), kUTF8_SkTextEncoding);
114 SkScalar x = (width - textWidth) / SkScalar(2);
115 SkScalar y = font.getSpacing() / SkScalar(2);
116 canvas->drawSimpleText(name, strlen(name), kUTF8_SkTextEncoding, x, y, font, paint);
117
118 // Draw destination bitmap
119 canvas->translate(0, vertOffset);
120 x = (width - 40) / SkScalar(2);
121 canvas->drawBitmap(fDst[i], x, 0, &paint);
122 canvas->restore();
123
124 canvas->translate(horizOffset, 0);
125 }
126 }
127
128 private:
129 typedef GM INHERITED;
130 };
131
132 //////////////////////////////////////////////////////////////////////////////
133
134 DEF_GM( return new BitmapCopyGM; )
135 }
136