reed | 4a8126e | 2014-09-22 07:29:03 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2014 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 "SkGradientShader.h" |
| 10 | #include "SkSurface.h" |
| 11 | #include "SkSurfaceProps.h" |
| 12 | |
| 13 | #define W 200 |
| 14 | #define H 100 |
| 15 | |
| 16 | static SkShader* make_shader() { |
| 17 | int a = 0x99; |
| 18 | int b = 0xBB; |
| 19 | SkPoint pts[] = { { 0, 0 }, { W, H } }; |
| 20 | SkColor colors[] = { SkColorSetRGB(a, a, a), SkColorSetRGB(b, b, b) }; |
| 21 | return SkGradientShader::CreateLinear(pts, colors, NULL, 2, SkShader::kClamp_TileMode); |
| 22 | } |
| 23 | |
| 24 | static SkSurface* make_surface(GrContext* ctx, const SkImageInfo& info, SkPixelGeometry geo, |
| 25 | int disallowAA, int disallowDither) { |
| 26 | uint32_t flags = 0; |
| 27 | if (disallowAA) { |
| 28 | flags |= SkSurfaceProps::kDisallowAntiAlias_Flag; |
| 29 | } |
| 30 | if (disallowDither) { |
| 31 | flags |= SkSurfaceProps::kDisallowDither_Flag; |
| 32 | } |
| 33 | |
| 34 | SkSurfaceProps props(flags, geo); |
| 35 | if (ctx) { |
| 36 | return SkSurface::NewRenderTarget(ctx, info, 0, &props); |
| 37 | } else { |
| 38 | return SkSurface::NewRaster(info, &props); |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | static void test_draw(SkCanvas* canvas, const char label[]) { |
| 43 | SkPaint paint; |
| 44 | |
| 45 | paint.setAntiAlias(true); |
| 46 | paint.setLCDRenderText(true); |
| 47 | paint.setDither(true); |
| 48 | |
| 49 | paint.setShader(make_shader())->unref(); |
| 50 | canvas->drawRect(SkRect::MakeWH(W, H), paint); |
| 51 | paint.setShader(NULL); |
| 52 | |
| 53 | paint.setColor(SK_ColorWHITE); |
| 54 | paint.setTextSize(32); |
| 55 | paint.setTextAlign(SkPaint::kCenter_Align); |
| 56 | canvas->drawText(label, strlen(label), W / 2, H * 3 / 4, paint); |
| 57 | } |
| 58 | |
| 59 | class SurfacePropsGM : public skiagm::GM { |
| 60 | public: |
| 61 | SurfacePropsGM() {} |
| 62 | |
| 63 | protected: |
| 64 | SkString onShortName() SK_OVERRIDE { |
| 65 | return SkString("surfaceprops"); |
| 66 | } |
| 67 | |
| 68 | virtual SkISize onISize() SK_OVERRIDE { |
| 69 | return SkISize::Make(W * 4, H * 5); |
| 70 | } |
| 71 | |
| 72 | virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 73 | GrContext* ctx = canvas->getGrContext(); |
| 74 | |
| 75 | // must be opaque to have a hope of testing LCD text |
| 76 | const SkImageInfo info = SkImageInfo::MakeN32(W, H, kOpaque_SkAlphaType); |
| 77 | |
| 78 | const struct { |
| 79 | SkPixelGeometry fGeo; |
| 80 | const char* fLabel; |
| 81 | } rec[] = { |
| 82 | { kUnknown_SkPixelGeometry, "Unknown" }, |
| 83 | { kRGB_H_SkPixelGeometry, "RGB_H" }, |
| 84 | { kBGR_H_SkPixelGeometry, "BGR_H" }, |
| 85 | { kRGB_V_SkPixelGeometry, "RGB_V" }, |
| 86 | { kBGR_V_SkPixelGeometry, "BGR_V" }, |
| 87 | }; |
| 88 | |
| 89 | SkScalar x = 0; |
| 90 | for (int disallowAA = 0; disallowAA <= 1; ++disallowAA) { |
| 91 | for (int disallowDither = 0; disallowDither <= 1; ++disallowDither) { |
| 92 | SkScalar y = 0; |
| 93 | for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) { |
| 94 | SkAutoTUnref<SkSurface> surface(make_surface(ctx, info, rec[i].fGeo, |
| 95 | disallowAA, disallowDither)); |
| 96 | test_draw(surface->getCanvas(), rec[i].fLabel); |
| 97 | surface->draw(canvas, x, y, NULL); |
| 98 | y += H; |
| 99 | } |
| 100 | x += W; |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | private: |
| 106 | typedef GM INHERITED; |
| 107 | }; |
| 108 | |
| 109 | DEF_GM( return new SurfacePropsGM ) |