Home | History | Annotate | Download | only in gm 
      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 
      8 
      9 /* Tests text vertical text rendering with different fonts and centering.
     10  */
     11 
     12 #include "gm.h"
     13 #include "sk_tool_utils.h"
     14 #include "SkCanvas.h"
     15 #include "SkTypeface.h"
     16 
     17 namespace skiagm {
     18 
     19 class VertText2GM : public GM {
     20 public:
     21     VertText2GM() {}
     22 
     23 protected:
     24     void onOnceBeforeDraw() override {
     25         const int pointSize = 24;
     26         textHeight = SkIntToScalar(pointSize);
     27         fProp = SkTypeface::MakeFromName(sk_tool_utils::platform_font_name("sans-serif"),
     28                 SkFontStyle());
     29         fMono = SkTypeface::MakeFromName(sk_tool_utils::platform_font_name("monospace"),
     30                 SkFontStyle());
     31     }
     32 
     33     SkString onShortName() override {
     34         SkString name("verttext2");
     35         name.append(sk_tool_utils::major_platform_os_name());
     36         return name;
     37     }
     38 
     39     SkISize onISize() override { return SkISize::Make(640, 480); }
     40 
     41     void onDraw(SkCanvas* canvas) override {
     42         for (int i = 0; i < 3; ++i) {
     43             SkPaint paint;
     44             paint.setColor(SK_ColorRED);
     45             paint.setAntiAlias(true);
     46             y = textHeight;
     47             canvas->drawLine(0, SkIntToScalar(10),
     48                     SkIntToScalar(110), SkIntToScalar(10), paint);
     49             canvas->drawLine(0, SkIntToScalar(240),
     50                     SkIntToScalar(110), SkIntToScalar(240), paint);
     51             canvas->drawLine(0, SkIntToScalar(470),
     52                     SkIntToScalar(110), SkIntToScalar(470), paint);
     53             drawText(canvas, SkString("Proportional / Top Aligned"),
     54                      fProp,  SkPaint::kLeft_Align);
     55             drawText(canvas, SkString("<   Proportional / Centered   >"),
     56                      fProp,  SkPaint::kCenter_Align);
     57             drawText(canvas, SkString("Monospaced / Top Aligned"),
     58                      fMono, SkPaint::kLeft_Align);
     59             drawText(canvas, SkString("<    Monospaced / Centered    >"),
     60                      fMono, SkPaint::kCenter_Align);
     61             canvas->rotate(SkIntToScalar(-15));
     62             canvas->translate(textHeight * 4, SkIntToScalar(50));
     63             if (i > 0) {
     64                 canvas->translate(0, SkIntToScalar(50));
     65             }
     66         }
     67     }
     68 
     69     void drawText(SkCanvas* canvas, const SkString& string,
     70                   sk_sp<SkTypeface> family, SkPaint::Align alignment) {
     71         SkPaint paint;
     72         paint.setColor(SK_ColorBLACK);
     73         paint.setAntiAlias(true);
     74         paint.setVerticalText(true);
     75         paint.setTextAlign(alignment);
     76         paint.setTypeface(std::move(family));
     77         paint.setTextSize(textHeight);
     78 
     79         canvas->drawString(string, y,
     80                 SkIntToScalar(alignment == SkPaint::kLeft_Align ? 10 : 240),
     81                 paint);
     82         y += textHeight;
     83     }
     84 
     85 private:
     86     typedef GM INHERITED;
     87     SkScalar y, textHeight;
     88     sk_sp<SkTypeface> fProp;
     89     sk_sp<SkTypeface> fMono;
     90 };
     91 
     92 ///////////////////////////////////////////////////////////////////////////////
     93 
     94 static GM* MyFactory(void*) { return new VertText2GM; }
     95 static GMRegistry reg(MyFactory);
     96 
     97 }
     98