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      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         SkRandom 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