Home | History | Annotate | Download | only in gm 
      1 
      2 /*
      3  * Copyright 2013 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 #include "gm.h"
      9 
     10 #include "SkAnnotation.h"
     11 #include "SkData.h"
     12 
     13 namespace skiagm {
     14 
     15 /** Draws two rectangles. In output formats that support internal links (PDF),
     16  *  clicking the one labeled "Link to A" should take you to the one labeled
     17  *  "Target A". Note that you'll need to zoom your PDF viewer in a fair bit in
     18  *  order for the scrolling to not be blocked by the edge of the document.
     19  */
     20 class InternalLinksGM : public GM {
     21 public:
     22     InternalLinksGM() {
     23         this->setBGColor(0xFFDDDDDD);
     24     }
     25 
     26 protected:
     27     virtual SkString onShortName() {
     28         return SkString("internal_links");
     29     }
     30 
     31     virtual SkISize onISize() {
     32         return SkISize::Make(700, 500);
     33     }
     34 
     35     virtual void onDraw(SkCanvas* canvas) {
     36         SkAutoTUnref<SkData> name(SkData::NewWithCString("target-a"));
     37 
     38         canvas->save();
     39         canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
     40         drawLabeledRect(canvas, "Link to A", 0, 0);
     41         SkRect rect = SkRect::MakeXYWH(0, 0, SkIntToScalar(50), SkIntToScalar(20));
     42         SkAnnotateLinkToDestination(canvas, rect, name.get());
     43         canvas->restore();
     44 
     45         canvas->save();
     46         canvas->translate(SkIntToScalar(200), SkIntToScalar(200));
     47         SkPoint point = SkPoint::Make(SkIntToScalar(100), SkIntToScalar(50));
     48         drawLabeledRect(canvas, "Target A", point.x(), point.y());
     49         SkAnnotateNamedDestination(canvas, point, name.get());
     50         canvas->restore();
     51     }
     52 
     53 private:
     54     /** Draw an arbitrary rectangle at a given location and label it with some
     55      *  text. */
     56     void drawLabeledRect(SkCanvas* canvas, const char* text, SkScalar x, SkScalar y) {
     57         SkPaint paint;
     58         paint.setColor(SK_ColorBLUE);
     59         SkRect rect = SkRect::MakeXYWH(x, y,
     60                                        SkIntToScalar(50), SkIntToScalar(20));
     61         canvas->drawRect(rect, paint);
     62 
     63         paint.setAntiAlias(true);
     64         paint.setTextSize(SkIntToScalar(25));
     65         paint.setColor(SK_ColorBLACK);
     66         canvas->drawText(text, strlen(text), x, y, paint);
     67     }
     68 
     69     typedef GM INHERITED;
     70 };
     71 
     72 //////////////////////////////////////////////////////////////////////////////
     73 
     74 static GM* MyFactory(void*) { return SkNEW(InternalLinksGM); }
     75 static GMRegistry reg(MyFactory);
     76 
     77 }
     78