reed@android.com | 048522d | 2009-06-23 12:19:41 +0000 | [diff] [blame] | 1 | #include "gm.h" |
| 2 | |
| 3 | namespace skiagm { |
| 4 | |
| 5 | static void make_bm(SkBitmap* bm) { |
| 6 | const SkColor colors[] = { |
| 7 | SK_ColorRED, SK_ColorGREEN, |
| 8 | SK_ColorBLUE, SK_ColorWHITE |
| 9 | }; |
| 10 | SkColorTable* ctable = new SkColorTable(colors, 4); |
| 11 | bm->setConfig(SkBitmap::kIndex8_Config, 2, 2); |
| 12 | bm->allocPixels(ctable); |
| 13 | ctable->unref(); |
| 14 | |
| 15 | *bm->getAddr8(0, 0) = 0; |
| 16 | *bm->getAddr8(1, 0) = 1; |
| 17 | *bm->getAddr8(0, 1) = 2; |
| 18 | *bm->getAddr8(1, 1) = 3; |
| 19 | } |
| 20 | |
| 21 | static SkScalar draw_bm(SkCanvas* canvas, const SkBitmap& bm, |
| 22 | SkScalar x, SkScalar y, SkPaint* paint) { |
| 23 | canvas->drawBitmap(bm, x, y, paint); |
| 24 | return SkIntToScalar(bm.width()) * 5/4; |
| 25 | } |
| 26 | |
| 27 | static SkScalar draw_set(SkCanvas* c, const SkBitmap& bm, SkScalar x, |
| 28 | SkPaint* p) { |
| 29 | x += draw_bm(c, bm, x, 0, p); |
| 30 | p->setFilterBitmap(true); |
| 31 | x += draw_bm(c, bm, x, 0, p); |
| 32 | p->setDither(true); |
| 33 | return x + draw_bm(c, bm, x, 0, p); |
| 34 | } |
| 35 | |
| 36 | static const char* gConfigNames[] = { |
| 37 | "unknown config", |
| 38 | "A1", |
| 39 | "A8", |
| 40 | "Index8", |
| 41 | "565", |
| 42 | "4444", |
| 43 | "8888" |
| 44 | }; |
| 45 | |
| 46 | static SkScalar draw_row(SkCanvas* canvas, const SkBitmap& bm) { |
| 47 | SkAutoCanvasRestore acr(canvas, true); |
| 48 | |
| 49 | SkPaint paint; |
| 50 | SkScalar x = 0; |
| 51 | const int scale = 32; |
| 52 | |
| 53 | paint.setAntiAlias(true); |
| 54 | const char* name = gConfigNames[bm.config()]; |
| 55 | canvas->drawText(name, strlen(name), x, SkIntToScalar(bm.height())*scale*5/8, |
| 56 | paint); |
| 57 | canvas->translate(SkIntToScalar(48), 0); |
| 58 | |
| 59 | canvas->scale(SkIntToScalar(scale), SkIntToScalar(scale)); |
| 60 | |
| 61 | x += draw_set(canvas, bm, 0, &paint); |
| 62 | paint.reset(); |
| 63 | paint.setAlpha(0x80); |
| 64 | draw_set(canvas, bm, x, &paint); |
| 65 | return x * scale / 3; |
| 66 | } |
| 67 | |
| 68 | class FilterGM : public GM { |
| 69 | public: |
| 70 | SkBitmap fBM8, fBM4444, fBM16, fBM32; |
| 71 | |
| 72 | FilterGM() { |
| 73 | make_bm(&fBM8); |
| 74 | fBM8.copyTo(&fBM4444, SkBitmap::kARGB_4444_Config); |
| 75 | fBM8.copyTo(&fBM16, SkBitmap::kRGB_565_Config); |
| 76 | fBM8.copyTo(&fBM32, SkBitmap::kARGB_8888_Config); |
| 77 | } |
| 78 | |
| 79 | protected: |
| 80 | virtual SkString onShortName() { |
| 81 | return SkString("bitmapfilters"); |
| 82 | } |
| 83 | |
| 84 | virtual SkISize onISize() { |
| 85 | return make_isize(540, 330); |
| 86 | } |
| 87 | |
| 88 | virtual void onDraw(SkCanvas* canvas) { |
| 89 | canvas->drawColor(0xFFDDDDDD); |
| 90 | |
| 91 | SkScalar x = SkIntToScalar(10); |
| 92 | SkScalar y = SkIntToScalar(10); |
| 93 | |
| 94 | canvas->translate(x, y); |
| 95 | y = draw_row(canvas, fBM8); |
| 96 | canvas->translate(0, y); |
| 97 | y = draw_row(canvas, fBM4444); |
| 98 | canvas->translate(0, y); |
| 99 | y = draw_row(canvas, fBM16); |
| 100 | canvas->translate(0, y); |
| 101 | draw_row(canvas, fBM32); |
| 102 | } |
| 103 | |
| 104 | private: |
| 105 | typedef GM INHERITED; |
| 106 | }; |
| 107 | |
| 108 | ////////////////////////////////////////////////////////////////////////////// |
| 109 | |
| 110 | static GM* MyFactory(void*) { return new FilterGM; } |
| 111 | static GMRegistry reg(MyFactory); |
| 112 | |
| 113 | } |
| 114 | |
| 115 | |
| 116 | |