1 /* 2 * Copyright 2012 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 "SkCanvas.h" 10 #include "SkPaint.h" 11 #include "SkRandom.h" 12 #include "SkTemplates.h" 13 14 class GetPosTextPathGM : public skiagm::GM { 15 public: 16 GetPosTextPathGM() {} 17 18 protected: 19 SkString onShortName() { 20 return SkString("getpostextpath"); 21 } 22 23 SkISize onISize() { return skiagm::make_isize(480, 780); } 24 25 static void strokePath(SkCanvas* canvas, const SkPath& path) { 26 SkPaint paint; 27 paint.setAntiAlias(true); 28 paint.setColor(SK_ColorRED); 29 paint.setStyle(SkPaint::kStroke_Style); 30 canvas->drawPath(path, paint); 31 } 32 33 virtual void onDraw(SkCanvas* canvas) { 34 // explicitly add spaces, to test a prev. bug 35 const char* text = "Ham bur ge fons"; 36 size_t len = strlen(text); 37 SkPath path; 38 39 SkPaint paint; 40 paint.setAntiAlias(true); 41 paint.setTextSize(SkIntToScalar(48)); 42 43 canvas->translate(SkIntToScalar(10), SkIntToScalar(64)); 44 45 canvas->drawText(text, len, 0, 0, paint); 46 paint.getTextPath(text, len, 0, 0, &path); 47 strokePath(canvas, path); 48 path.reset(); 49 50 SkAutoTArray<SkPoint> pos(len); 51 SkAutoTArray<SkScalar> widths(len); 52 paint.getTextWidths(text, len, &widths[0]); 53 54 SkLCGRandom rand; 55 SkScalar x = SkIntToScalar(20); 56 SkScalar y = SkIntToScalar(100); 57 for (size_t i = 0; i < len; ++i) { 58 pos[i].set(x, y + rand.nextSScalar1() * 24); 59 x += widths[i]; 60 } 61 62 canvas->translate(0, SkIntToScalar(64)); 63 64 canvas->drawPosText(text, len, &pos[0], paint); 65 paint.getPosTextPath(text, len, &pos[0], &path); 66 strokePath(canvas, path); 67 } 68 }; 69 70 ////////////////////////////////////////////////////////////////////////////// 71 72 static skiagm::GM* F(void*) { return new GetPosTextPathGM; } 73 static skiagm::GMRegistry gR(F); 74