bsalomon | 8cf1d95 | 2015-04-16 06:54:28 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 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 | |
| 10 | #include "SkShader.h" |
| 11 | |
| 12 | // Inspired by svg/as-border-image/svg-as-border-image.html. Draws a four-color checker board bitmap |
| 13 | // such that it is stretched and repeat tiled with different filter qualities. It is testing whether |
| 14 | // the bmp filter respects the repeat mode at the tile seams. |
| 15 | class BmpFilterQualityRepeat : public skiagm::GM { |
| 16 | public: |
| 17 | BmpFilterQualityRepeat() { this->setBGColor(0xFFCCBBAA); } |
| 18 | |
| 19 | protected: |
| 20 | |
| 21 | void onOnceBeforeDraw() override { |
| 22 | fBmp.allocN32Pixels(40, 40, true); |
| 23 | SkCanvas canvas(fBmp); |
| 24 | SkBitmap colorBmp; |
| 25 | colorBmp.allocN32Pixels(20, 20, true); |
| 26 | colorBmp.eraseColor(0xFFFF0000); |
| 27 | canvas.drawBitmap(colorBmp, 0, 0); |
| 28 | colorBmp.eraseColor(0xFF008200); |
| 29 | canvas.drawBitmap(colorBmp, 20, 0); |
| 30 | colorBmp.eraseColor(0xFFFF9000); |
| 31 | canvas.drawBitmap(colorBmp, 0, 20); |
| 32 | colorBmp.eraseColor(0xFF2000FF); |
| 33 | canvas.drawBitmap(colorBmp, 20, 20); |
| 34 | } |
| 35 | |
| 36 | SkString onShortName() override { return SkString("bmp_filter_quality_repeat"); } |
| 37 | |
| 38 | SkISize onISize() override { return SkISize::Make(810, 235); } |
| 39 | |
| 40 | void onDraw(SkCanvas* canvas) override { |
| 41 | |
| 42 | static const struct { |
| 43 | SkFilterQuality fQuality; |
| 44 | const char* fName; |
| 45 | } kQualities[] = { |
| 46 | {kNone_SkFilterQuality, "none"}, |
| 47 | {kLow_SkFilterQuality, "low"}, |
| 48 | {kMedium_SkFilterQuality, "medium"}, |
| 49 | {kHigh_SkFilterQuality, "high"}, |
| 50 | }; |
| 51 | |
| 52 | for (size_t q = 0; q < SK_ARRAY_COUNT(kQualities); ++q) { |
| 53 | SkPaint paint; |
| 54 | paint.setFilterQuality(kQualities[q].fQuality); |
| 55 | SkPaint bmpPaint(paint); |
| 56 | SkMatrix lm = SkMatrix::I(); |
| 57 | lm.setScaleX(2.5); |
| 58 | lm.setTranslateX(423); |
| 59 | lm.setTranslateY(330); |
| 60 | |
| 61 | static const SkShader::TileMode kTM = SkShader::kRepeat_TileMode; |
| 62 | bmpPaint.setShader(SkShader::CreateBitmapShader(fBmp, kTM, kTM, &lm))->unref(); |
| 63 | SkRect rect = SkRect::MakeLTRB(20, 60, 220, 210); |
| 64 | canvas->drawRect(rect, bmpPaint); |
| 65 | paint.setAntiAlias(true); |
| 66 | canvas->drawText(kQualities[q].fName, strlen(kQualities[q].fName), 20, 40, paint); |
| 67 | canvas->translate(250, 0); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | private: |
| 72 | SkBitmap fBmp; |
| 73 | |
| 74 | typedef skiagm::GM INHERITED; |
| 75 | }; |
| 76 | |
| 77 | ////////////////////////////////////////////////////////////////////////////// |
| 78 | |
| 79 | DEF_GM( return SkNEW(BmpFilterQualityRepeat); ) |