gm/verttext2.cpp

   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 }