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| 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 #include "gm.h" | |
| 8 #include "Resources.h" | |
| 9 #include "SkFixed.h" | |
| 10 #include "SkFontDescriptor.h" | |
| 11 #include "SkFontMgr.h" | |
| 12 #include "SkTypeface.h" | |
| 13 | |
| 14 namespace skiagm { | |
| 15 | |
| 16 class FontScalerDistortableGM : public GM { | |
| 17 public: | |
| 18 FontScalerDistortableGM() { | |
| 19 this->setBGColor(0xFFFFFFFF); | |
| 20 } | |
| 21 | |
| 22 virtual ~FontScalerDistortableGM() { } | |
| 23 | |
| 24 protected: | |
| 25 | |
| 26 SkString onShortName() override { | |
| 27 return SkString("fontscalerdistortable"); | |
| 28 } | |
| 29 | |
| 30 SkISize onISize() override { | |
| 31 return SkISize::Make(550, 700); | |
| 32 } | |
| 33 | |
| 34 static void rotate_about(SkCanvas* canvas, SkScalar degrees, SkScalar px, Sk
Scalar py) { | |
| 35 canvas->translate(px, py); | |
| 36 canvas->rotate(degrees); | |
| 37 canvas->translate(-px, -py); | |
| 38 } | |
| 39 | |
| 40 void onDraw(SkCanvas* canvas) override { | |
| 41 SkPaint paint; | |
| 42 paint.setAntiAlias(true); | |
| 43 paint.setLCDRenderText(true); | |
| 44 | |
| 45 SkAutoTDelete<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Dis
tortable.ttf")); | |
| 46 if (!distortable) { | |
| 47 return; | |
| 48 } | |
| 49 const char* text = "abc"; | |
| 50 const size_t textLen = strlen(text); | |
| 51 | |
| 52 for (int j = 0; j < 2; ++j) { | |
| 53 for (int i = 0; i < 5; ++i) { | |
| 54 SkScalar x = SkIntToScalar(10); | |
| 55 SkScalar y = SkIntToScalar(20); | |
| 56 | |
| 57 SkFixed axis = SkDoubleToFixed(0.5 + (5*j + i) * ((2.0 - 0.5) /
(2 * 5))); | |
| 58 SkAutoTUnref<SkTypeface> typeface(SkTypeface::CreateFromFontData
( | |
| 59 new SkFontData(distortable->duplicate(), 0, &axis, 1))); | |
| 60 paint.setTypeface(typeface); | |
| 61 | |
| 62 SkAutoCanvasRestore acr(canvas, true); | |
| 63 canvas->translate(SkIntToScalar(30 + i * 100), SkIntToScalar(20)
); | |
| 64 rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10); | |
| 65 | |
| 66 { | |
| 67 SkPaint p; | |
| 68 p.setAntiAlias(true); | |
| 69 SkRect r; | |
| 70 r.set(x - SkIntToScalar(3), SkIntToScalar(15), | |
| 71 x - SkIntToScalar(1), SkIntToScalar(280)); | |
| 72 canvas->drawRect(r, p); | |
| 73 } | |
| 74 | |
| 75 for (int ps = 6; ps <= 22; ps++) { | |
| 76 paint.setTextSize(SkIntToScalar(ps)); | |
| 77 canvas->drawText(text, textLen, x, y, paint); | |
| 78 y += paint.getFontMetrics(NULL); | |
| 79 } | |
| 80 } | |
| 81 canvas->translate(0, SkIntToScalar(360)); | |
| 82 paint.setSubpixelText(true); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 private: | |
| 87 typedef GM INHERITED; | |
| 88 }; | |
| 89 | |
| 90 ////////////////////////////////////////////////////////////////////////////// | |
| 91 | |
| 92 static GM* MyFactory(void*) { return new FontScalerDistortableGM; } | |
| 93 static GMRegistry reg(MyFactory); | |
| 94 | |
| 95 } | |
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