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 #include "gm.h"
8 #include "sk_tool_utils.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 constexpr 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->drawRect(SkRect::MakeIWH(width/2, height/2), paint);
34 paint.setColor(SK_ColorGREEN);
35 canvas->drawRect({ SkIntToScalar(width/2), 0, SkIntToScalar(width), SkIntToScalar(height/2) },
36 paint);
37 paint.setColor(SK_ColorBLUE);
38 canvas->drawRect({ 0, SkIntToScalar(height/2), SkIntToScalar(width/2), SkIntToScalar(height) },
39 paint);
40 paint.setColor(SK_ColorYELLOW);
41 canvas->drawRect({ SkIntToScalar(width/2), SkIntToScalar(height/2), SkIntToScalar(width),
42 SkIntToScalar(height) }, paint);
43 }
44
45 class BitmapCopyGM : public GM {
46 public:
47 SkBitmap fDst[NUM_CONFIGS];
48
BitmapCopyGM()49 BitmapCopyGM() {
50 this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
51 }
52
53 protected:
onShortName()54 virtual SkString onShortName() {
55 return SkString("bitmapcopy");
56 }
57
onISize()58 virtual SkISize onISize() {
59 return SkISize::Make(540, 330);
60 }
61
onDraw(SkCanvas * canvas)62 virtual void onDraw(SkCanvas* canvas) {
63 SkPaint paint;
64 SkScalar horizMargin = 10;
65 SkScalar vertMargin = 10;
66
67 SkBitmap src;
68 src.allocN32Pixels(40, 40);
69 SkCanvas canvasTmp(src);
70
71 draw_checks(&canvasTmp, 40, 40);
72
73 for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
74 src.copyTo(&fDst[i], gColorTypes[i]);
75 }
76
77 canvas->clear(sk_tool_utils::color_to_565(0xFFDDDDDD));
78 paint.setAntiAlias(true);
79 sk_tool_utils::set_portable_typeface(&paint);
80
81 SkScalar width = SkIntToScalar(40);
82 SkScalar height = SkIntToScalar(40);
83 if (paint.getFontSpacing() > height) {
84 height = paint.getFontSpacing();
85 }
86 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
87 const char* name = gColorTypeNames[src.colorType()];
88 SkScalar textWidth = paint.measureText(name, strlen(name));
89 if (textWidth > width) {
90 width = textWidth;
91 }
92 }
93 SkScalar horizOffset = width + horizMargin;
94 SkScalar vertOffset = height + vertMargin;
95 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
96
97 for (unsigned i = 0; i < NUM_CONFIGS; i++) {
98 canvas->save();
99 // Draw destination config name
100 const char* name = gColorTypeNames[fDst[i].colorType()];
101 SkScalar textWidth = paint.measureText(name, strlen(name));
102 SkScalar x = (width - textWidth) / SkScalar(2);
103 SkScalar y = paint.getFontSpacing() / SkScalar(2);
104 canvas->drawText(name, strlen(name), x, y, paint);
105
106 // Draw destination bitmap
107 canvas->translate(0, vertOffset);
108 x = (width - 40) / SkScalar(2);
109 canvas->drawBitmap(fDst[i], x, 0, &paint);
110 canvas->restore();
111
112 canvas->translate(horizOffset, 0);
113 }
114 }
115
116 private:
117 typedef GM INHERITED;
118 };
119
120 //////////////////////////////////////////////////////////////////////////////
121
MyFactory(void *)122 static GM* MyFactory(void*) { return new BitmapCopyGM; }
123 static GMRegistry reg(MyFactory);
124 }
125