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      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 "sk_tool_utils.h"
      9 #include "SkTypeface.h"
     10 
     11 namespace skiagm {
     12 
     13 class FontScalerGM : public GM {
     14 public:
     15     FontScalerGM() {
     16         this->setBGColor(0xFFFFFFFF);
     17     }
     18 
     19 protected:
     20 
     21     SkString onShortName() override {
     22         SkString name("fontscaler");
     23         name.append(sk_tool_utils::major_platform_os_name());
     24         return name;
     25     }
     26 
     27     SkISize onISize() override {
     28         return SkISize::Make(1450, 750);
     29     }
     30 
     31     void onDraw(SkCanvas* canvas) override {
     32         SkPaint paint;
     33 
     34         paint.setAntiAlias(true);
     35         paint.setLCDRenderText(true);
     36         //With freetype the default (normal hinting) can be really ugly.
     37         //Most distros now set slight (vertical hinting only) in any event.
     38         paint.setHinting(SkPaint::kSlight_Hinting);
     39 
     40         const char* text = "Hamburgefons ooo mmm";
     41         const size_t textLen = strlen(text);
     42 
     43         for (int j = 0; j < 2; ++j) {
     44             // This used to do 6 iterations but it causes the N4 to crash in the MSAA4 config.
     45             for (int i = 0; i < 5; ++i) {
     46                 SkScalar x = SkIntToScalar(10);
     47                 SkScalar y = SkIntToScalar(20);
     48 
     49                 SkAutoCanvasRestore acr(canvas, true);
     50                 canvas->translate(SkIntToScalar(50 + i * 230),
     51                                   SkIntToScalar(20));
     52                 canvas->rotate(SkIntToScalar(i * 5), x, y * 10);
     53 
     54                 {
     55                     SkPaint p;
     56                     p.setAntiAlias(true);
     57                     SkRect r;
     58                     r.set(x - SkIntToScalar(3), SkIntToScalar(15),
     59                           x - SkIntToScalar(1), SkIntToScalar(280));
     60                     canvas->drawRect(r, p);
     61                 }
     62 
     63                 for (int ps = 6; ps <= 22; ps++) {
     64                     paint.setTextSize(SkIntToScalar(ps));
     65                     canvas->drawText(text, textLen, x, y, paint);
     66                     y += paint.getFontMetrics(nullptr);
     67                 }
     68             }
     69             canvas->translate(0, SkIntToScalar(360));
     70             paint.setSubpixelText(true);
     71         }
     72     }
     73 
     74 private:
     75     typedef GM INHERITED;
     76 };
     77 
     78 //////////////////////////////////////////////////////////////////////////////
     79 
     80 static GM* MyFactory(void*) { return new FontScalerGM; }
     81 static GMRegistry reg(MyFactory);
     82 
     83 }
     84