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
13namespace 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 */
20class InternalLinksGM : public GM {
21public:
22    InternalLinksGM() {
23        this->setBGColor(0xFFDDDDDD);
24    }
25
26protected:
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
53private:
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
74static GM* MyFactory(void*) { return SkNEW(InternalLinksGM); }
75static GMRegistry reg(MyFactory);
76
77}
78