1 #include "gm.h"
2
3 namespace skiagm {
4
make_bm(SkBitmap * bm)5 static void make_bm(SkBitmap* bm) {
6 const SkColor colors[4] = {
7 SK_ColorRED, SK_ColorGREEN,
8 SK_ColorBLUE, SK_ColorWHITE
9 };
10 SkPMColor colorsPM[4];
11 for (size_t i = 0; i < SK_ARRAY_COUNT(colors); ++i) {
12 colorsPM[i] = SkPreMultiplyColor(colors[i]);
13 }
14 SkColorTable* ctable = new SkColorTable(colorsPM, 4);
15
16 bm->setConfig(SkBitmap::kIndex8_Config, 2, 2);
17 bm->allocPixels(ctable);
18 ctable->unref();
19
20 *bm->getAddr8(0, 0) = 0;
21 *bm->getAddr8(1, 0) = 1;
22 *bm->getAddr8(0, 1) = 2;
23 *bm->getAddr8(1, 1) = 3;
24 }
25
draw_bm(SkCanvas * canvas,const SkBitmap & bm,SkScalar x,SkScalar y,SkPaint * paint)26 static SkScalar draw_bm(SkCanvas* canvas, const SkBitmap& bm,
27 SkScalar x, SkScalar y, SkPaint* paint) {
28 canvas->drawBitmap(bm, x, y, paint);
29 return SkIntToScalar(bm.width()) * 5/4;
30 }
31
draw_set(SkCanvas * c,const SkBitmap & bm,SkScalar x,SkPaint * p)32 static SkScalar draw_set(SkCanvas* c, const SkBitmap& bm, SkScalar x,
33 SkPaint* p) {
34 x += draw_bm(c, bm, x, 0, p);
35 p->setFilterBitmap(true);
36 x += draw_bm(c, bm, x, 0, p);
37 p->setDither(true);
38 return x + draw_bm(c, bm, x, 0, p);
39 }
40
41 static const char* gConfigNames[] = {
42 "unknown config",
43 "A1",
44 "A8",
45 "Index8",
46 "565",
47 "4444",
48 "8888"
49 };
50
draw_row(SkCanvas * canvas,const SkBitmap & bm)51 static SkScalar draw_row(SkCanvas* canvas, const SkBitmap& bm) {
52 SkAutoCanvasRestore acr(canvas, true);
53
54 SkPaint paint;
55 SkScalar x = 0;
56 const int scale = 32;
57
58 paint.setAntiAlias(true);
59 const char* name = gConfigNames[bm.config()];
60 canvas->drawText(name, strlen(name), x, SkIntToScalar(bm.height())*scale*5/8,
61 paint);
62 canvas->translate(SkIntToScalar(48), 0);
63
64 canvas->scale(SkIntToScalar(scale), SkIntToScalar(scale));
65
66 x += draw_set(canvas, bm, 0, &paint);
67 paint.reset();
68 paint.setAlpha(0x80);
69 draw_set(canvas, bm, x, &paint);
70 return x * scale / 3;
71 }
72
73 class FilterGM : public GM {
74 public:
75 SkBitmap fBM8, fBM4444, fBM16, fBM32;
76
FilterGM()77 FilterGM() {
78 make_bm(&fBM8);
79 fBM8.copyTo(&fBM4444, SkBitmap::kARGB_4444_Config);
80 fBM8.copyTo(&fBM16, SkBitmap::kRGB_565_Config);
81 fBM8.copyTo(&fBM32, SkBitmap::kARGB_8888_Config);
82 }
83
84 protected:
onShortName()85 virtual SkString onShortName() {
86 return SkString("bitmapfilters");
87 }
88
onISize()89 virtual SkISize onISize() {
90 return make_isize(540, 330);
91 }
92
onDraw(SkCanvas * canvas)93 virtual void onDraw(SkCanvas* canvas) {
94 canvas->drawColor(0xFFDDDDDD);
95
96 SkScalar x = SkIntToScalar(10);
97 SkScalar y = SkIntToScalar(10);
98
99 canvas->translate(x, y);
100 y = draw_row(canvas, fBM8);
101 canvas->translate(0, y);
102 y = draw_row(canvas, fBM4444);
103 canvas->translate(0, y);
104 y = draw_row(canvas, fBM16);
105 canvas->translate(0, y);
106 draw_row(canvas, fBM32);
107 }
108
109 private:
110 typedef GM INHERITED;
111 };
112
113 //////////////////////////////////////////////////////////////////////////////
114
MyFactory(void *)115 static GM* MyFactory(void*) { return new FilterGM; }
116 static GMRegistry reg(MyFactory);
117
118 }
119
120
121
122