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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 
     20     SkString onShortName() override {
     21         return SkString("getpostextpath");
     22     }
     23 
     24     SkISize onISize() override { return SkISize::Make(480, 780); }
     25 
     26     static void strokePath(SkCanvas* canvas, const SkPath& path) {
     27         SkPaint paint;
     28         paint.setAntiAlias(true);
     29         paint.setColor(SK_ColorRED);
     30         paint.setStyle(SkPaint::kStroke_Style);
     31         canvas->drawPath(path, paint);
     32     }
     33 
     34     void onDraw(SkCanvas* canvas) override {
     35         // explicitly add spaces, to test a prev. bug
     36         const char* text = "Ham bur ge fons";
     37         int len = SkToInt(strlen(text));
     38         SkPath path;
     39 
     40         SkPaint paint;
     41         paint.setAntiAlias(true);
     42         sk_tool_utils::set_portable_typeface(&paint);
     43         paint.setTextSize(SkIntToScalar(48));
     44 
     45         canvas->translate(SkIntToScalar(10), SkIntToScalar(64));
     46 
     47         canvas->drawText(text, len, 0, 0, paint);
     48         paint.getTextPath(text, len, 0, 0, &path);
     49         strokePath(canvas, path);
     50         path.reset();
     51 
     52         SkAutoTArray<SkPoint>  pos(len);
     53         SkAutoTArray<SkScalar> widths(len);
     54         paint.getTextWidths(text, len, &widths[0]);
     55 
     56         SkRandom rand;
     57         SkScalar x = SkIntToScalar(20);
     58         SkScalar y = SkIntToScalar(100);
     59         for (int i = 0; i < len; ++i) {
     60             pos[i].set(x, y + rand.nextSScalar1() * 24);
     61             x += widths[i];
     62         }
     63 
     64         canvas->translate(0, SkIntToScalar(64));
     65 
     66         canvas->drawPosText(text, len, &pos[0], paint);
     67         paint.getPosTextPath(text, len, &pos[0], &path);
     68         strokePath(canvas, path);
     69     }
     70 };
     71 
     72 //////////////////////////////////////////////////////////////////////////////
     73 
     74 static skiagm::GM* F(void*) { return new GetPosTextPathGM; }
     75 static skiagm::GMRegistry gR(F);
     76