1 /* 2 * Copyright 2011 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 "SkTypeface.h" 9 10 namespace skiagm { 11 12 class FontScalerGM : public GM { 13 public: 14 FontScalerGM() { 15 this->setBGColor(0xFFFFFFFF); 16 } 17 18 virtual ~FontScalerGM() { 19 } 20 21 protected: 22 virtual SkString onShortName() { 23 return SkString("fontscaler"); 24 } 25 26 virtual SkISize onISize() { 27 return make_isize(1450, 750); 28 } 29 30 static void rotate_about(SkCanvas* canvas, 31 SkScalar degrees, 32 SkScalar px, SkScalar py) { 33 canvas->translate(px, py); 34 canvas->rotate(degrees); 35 canvas->translate(-px, -py); 36 } 37 38 virtual void onDraw(SkCanvas* canvas) { 39 SkPaint paint; 40 41 paint.setAntiAlias(true); 42 paint.setLCDRenderText(true); 43 //With freetype the default (normal hinting) can be really ugly. 44 //Most distros now set slight (vertical hinting only) in any event. 45 paint.setHinting(SkPaint::kSlight_Hinting); 46 SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromName("Times Roman", SkTypeface::kNormal))); 47 48 const char* text = "Hamburgefons ooo mmm"; 49 const size_t textLen = strlen(text); 50 51 for (int j = 0; j < 2; ++j) { 52 for (int i = 0; i < 6; ++i) { 53 SkScalar x = SkIntToScalar(10); 54 SkScalar y = SkIntToScalar(20); 55 56 SkAutoCanvasRestore acr(canvas, true); 57 canvas->translate(SkIntToScalar(50 + i * 230), 58 SkIntToScalar(20)); 59 rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10); 60 61 { 62 SkPaint p; 63 p.setAntiAlias(true); 64 SkRect r; 65 r.set(x - SkIntToScalar(3), SkIntToScalar(15), 66 x - SkIntToScalar(1), SkIntToScalar(280)); 67 canvas->drawRect(r, p); 68 } 69 70 int index = 0; 71 for (int ps = 6; ps <= 22; ps++) { 72 paint.setTextSize(SkIntToScalar(ps)); 73 canvas->drawText(text, textLen, x, y, paint); 74 y += paint.getFontMetrics(NULL); 75 index += 1; 76 } 77 } 78 canvas->translate(0, SkIntToScalar(360)); 79 paint.setSubpixelText(true); 80 } 81 } 82 83 private: 84 typedef GM INHERITED; 85 }; 86 87 ////////////////////////////////////////////////////////////////////////////// 88 89 static GM* MyFactory(void*) { return new FontScalerGM; } 90 static GMRegistry reg(MyFactory); 91 92 } 93 94