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      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         prop = SkTypeface::CreateFromName("Helvetica", SkTypeface::kNormal);
     25         mono = SkTypeface::CreateFromName("Courier New", SkTypeface::kNormal);
     26     }
     27 
     28 protected:
     29 
     30     SkString onShortName() {
     31         return SkString("verttext2");
     32     }
     33 
     34     SkISize onISize() { return make_isize(640, 480); }
     35 
     36     virtual void onDraw(SkCanvas* canvas) {
     37 
     38         for (int i = 0; i < 3; ++i) {
     39             SkPaint paint;
     40             paint.setColor(SK_ColorRED);
     41             paint.setAntiAlias(true);
     42             y = textHeight;
     43             canvas->drawLine(0, SkIntToScalar(10),
     44                     SkIntToScalar(110), SkIntToScalar(10), paint);
     45             canvas->drawLine(0, SkIntToScalar(240),
     46                     SkIntToScalar(110), SkIntToScalar(240), paint);
     47             canvas->drawLine(0, SkIntToScalar(470),
     48                     SkIntToScalar(110), SkIntToScalar(470), paint);
     49             drawText(canvas, SkString("Proportional / Top Aligned"),
     50                      prop,  SkPaint::kLeft_Align);
     51             drawText(canvas, SkString("<   Proportional / Centered   >"),
     52                      prop,  SkPaint::kCenter_Align);
     53             drawText(canvas, SkString("Monospaced / Top Aligned"),
     54                      mono, SkPaint::kLeft_Align);
     55             drawText(canvas, SkString("<    Monospaced / Centered    >"),
     56                      mono, SkPaint::kCenter_Align);
     57             canvas->rotate(SkIntToScalar(-15));
     58             canvas->translate(textHeight * 4, SkIntToScalar(50));
     59             if (i > 0) {
     60                 canvas->translate(0, SkIntToScalar(50));
     61             }
     62         }
     63     }
     64 
     65     void drawText(SkCanvas* canvas, const SkString& string,
     66                   SkTypeface* family, SkPaint::Align alignment) {
     67         SkPaint paint;
     68         paint.setColor(SK_ColorBLACK);
     69         paint.setAntiAlias(true);
     70         paint.setVerticalText(true);
     71         paint.setTextAlign(alignment);
     72         paint.setTypeface(family);
     73         paint.setTextSize(textHeight);
     74 
     75         canvas->drawText(string.c_str(), string.size(), y,
     76                 alignment == SkPaint::kLeft_Align ? 10 : 240, paint);
     77         y += textHeight;
     78     }
     79 
     80 private:
     81     typedef GM INHERITED;
     82     SkScalar y, textHeight;
     83     SkTypeface* prop;
     84     SkTypeface* mono;
     85 };
     86 
     87 ///////////////////////////////////////////////////////////////////////////////
     88 
     89 static GM* MyFactory(void*) { return new VertText2GM; }
     90 static GMRegistry reg(MyFactory);
     91 
     92 }
     93