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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         fProp = SkTypeface::CreateFromName("Helvetica", SkTypeface::kNormal);
     25         fMono = SkTypeface::CreateFromName("Courier New", SkTypeface::kNormal);
     26     }
     27 
     28     virtual ~VertText2GM() {
     29         SkSafeUnref(fProp);
     30         SkSafeUnref(fMono);
     31     }
     32 
     33 protected:
     34     virtual uint32_t onGetFlags() const SK_OVERRIDE {
     35         return kSkipTiled_Flag;
     36     }
     37 
     38 
     39     SkString onShortName() {
     40         return SkString("verttext2");
     41     }
     42 
     43     SkISize onISize() { return SkISize::Make(640, 480); }
     44 
     45     virtual void onDraw(SkCanvas* canvas) {
     46 
     47         for (int i = 0; i < 3; ++i) {
     48             SkPaint paint;
     49             paint.setColor(SK_ColorRED);
     50             paint.setAntiAlias(true);
     51             y = textHeight;
     52             canvas->drawLine(0, SkIntToScalar(10),
     53                     SkIntToScalar(110), SkIntToScalar(10), paint);
     54             canvas->drawLine(0, SkIntToScalar(240),
     55                     SkIntToScalar(110), SkIntToScalar(240), paint);
     56             canvas->drawLine(0, SkIntToScalar(470),
     57                     SkIntToScalar(110), SkIntToScalar(470), paint);
     58             drawText(canvas, SkString("Proportional / Top Aligned"),
     59                      fProp,  SkPaint::kLeft_Align);
     60             drawText(canvas, SkString("<   Proportional / Centered   >"),
     61                      fProp,  SkPaint::kCenter_Align);
     62             drawText(canvas, SkString("Monospaced / Top Aligned"),
     63                      fMono, SkPaint::kLeft_Align);
     64             drawText(canvas, SkString("<    Monospaced / Centered    >"),
     65                      fMono, SkPaint::kCenter_Align);
     66             canvas->rotate(SkIntToScalar(-15));
     67             canvas->translate(textHeight * 4, SkIntToScalar(50));
     68             if (i > 0) {
     69                 canvas->translate(0, SkIntToScalar(50));
     70             }
     71         }
     72     }
     73 
     74     void drawText(SkCanvas* canvas, const SkString& string,
     75                   SkTypeface* family, SkPaint::Align alignment) {
     76         SkPaint paint;
     77         paint.setColor(SK_ColorBLACK);
     78         paint.setAntiAlias(true);
     79         paint.setVerticalText(true);
     80         paint.setTextAlign(alignment);
     81         paint.setTypeface(family);
     82         paint.setTextSize(textHeight);
     83 
     84         canvas->drawText(string.c_str(), string.size(), y,
     85                 SkIntToScalar(alignment == SkPaint::kLeft_Align ? 10 : 240),
     86                 paint);
     87         y += textHeight;
     88     }
     89 
     90 private:
     91     typedef GM INHERITED;
     92     SkScalar y, textHeight;
     93     SkTypeface* fProp;
     94     SkTypeface* fMono;
     95 };
     96 
     97 ///////////////////////////////////////////////////////////////////////////////
     98 
     99 static GM* MyFactory(void*) { return new VertText2GM; }
    100 static GMRegistry reg(MyFactory);
    101 
    102 }
    103