gm/verttext2.cpp

   1
   2 /*
   3  * Copyright 2011 Google Inc.
   4  *
   5  * Use of this source code is governed by a BSD-style license that can be
   6  * found in the LICENSE file.
   7  */
   8
   9
  10 /* Tests text vertical text rendering with different fonts and centering.
  11  */
  12
  13 #include "gm.h"
  14 #include "SkCanvas.h"
  15 #include "SkTypeface.h"
  16
  17 namespace skiagm {
  18
  19 class VertText2GM : public GM {
  20 public:
  21     VertText2GM() {
  22         const int pointSize = 24;
  23         textHeight = SkIntToScalar(pointSize);
  24         fProp = sk_tool_utils::create_portable_typeface("Helvetica", SkTypeface::kNormal);
  25         fMono = sk_tool_utils::create_portable_typeface("Courier New", SkTypeface::kNormal);
  26     }
  27
  28     virtual ~VertText2GM() {
  29         SkSafeUnref(fProp);
  30         SkSafeUnref(fMono);
  31     }
  32
  33 protected:
  34
  35
  36     SkString onShortName() SK_OVERRIDE {
  37         return SkString("verttext2");
  38     }
  39
  40     SkISize onISize() SK_OVERRIDE { return SkISize::Make(640, 480); }
  41
  42     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
  43         for (int i = 0; i < 3; ++i) {
  44             SkPaint paint;
  45             paint.setColor(SK_ColorRED);
  46             paint.setAntiAlias(true);
  47             y = textHeight;
  48             canvas->drawLine(0, SkIntToScalar(10),
  49                     SkIntToScalar(110), SkIntToScalar(10), paint);
  50             canvas->drawLine(0, SkIntToScalar(240),
  51                     SkIntToScalar(110), SkIntToScalar(240), paint);
  52             canvas->drawLine(0, SkIntToScalar(470),
  53                     SkIntToScalar(110), SkIntToScalar(470), paint);
  54             drawText(canvas, SkString("Proportional / Top Aligned"),
  55                      fProp,  SkPaint::kLeft_Align);
  56             drawText(canvas, SkString("<   Proportional / Centered   >"),
  57                      fProp,  SkPaint::kCenter_Align);
  58             drawText(canvas, SkString("Monospaced / Top Aligned"),
  59                      fMono, SkPaint::kLeft_Align);
  60             drawText(canvas, SkString("<    Monospaced / Centered    >"),
  61                      fMono, SkPaint::kCenter_Align);
  62             canvas->rotate(SkIntToScalar(-15));
  63             canvas->translate(textHeight * 4, SkIntToScalar(50));
  64             if (i > 0) {
  65                 canvas->translate(0, SkIntToScalar(50));
  66             }
  67         }
  68     }
  69
  70     void drawText(SkCanvas* canvas, const SkString& string,
  71                   SkTypeface* family, SkPaint::Align alignment) {
  72         SkPaint paint;
  73         paint.setColor(SK_ColorBLACK);
  74         paint.setAntiAlias(true);
  75         paint.setVerticalText(true);
  76         paint.setTextAlign(alignment);
  77         paint.setTypeface(family);
  78         paint.setTextSize(textHeight);
  79
  80         canvas->drawText(string.c_str(), string.size(), y,
  81                 SkIntToScalar(alignment == SkPaint::kLeft_Align ? 10 : 240),
  82                 paint);
  83         y += textHeight;
  84     }
  85
  86 private:
  87     typedef GM INHERITED;
  88     SkScalar y, textHeight;
  89     SkTypeface* fProp;
  90     SkTypeface* fMono;
  91 };
  92
  93 ///////////////////////////////////////////////////////////////////////////////
  94
  95 static GM* MyFactory(void*) { return new VertText2GM; }
  96 static GMRegistry reg(MyFactory);
  97
  98 }