1/*
2 * Copyright 2012 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "gm.h"
9#include "SkCanvas.h"
10#include "SkPath.h"
11#include "SkSurface.h"
12
13#define ZOOM    32
14#define SMALL_W 9
15#define SMALL_H 3
16#define REPEAT_LOOP 5
17
18static SkSurface* new_surface(int width, int height) {
19    return SkSurface::NewRasterN32Premul(width, height);
20}
21
22static void draw_pixel_centers(SkCanvas* canvas) {
23    SkPaint paint;
24    paint.setColor(0xFF0088FF);
25    paint.setAntiAlias(true);
26
27    for (int y = 0; y < SMALL_H; ++y) {
28        for (int x = 0; x < SMALL_W; ++x) {
29            canvas->drawCircle(x + 0.5f, y + 0.5f, 1.5f / ZOOM, paint);
30        }
31    }
32}
33
34static void draw_fatpath(SkCanvas* canvas, SkSurface* surface,
35                         const SkPath paths[], int count) {
36    SkPaint paint;
37
38    surface->getCanvas()->clear(SK_ColorTRANSPARENT);
39    for (int i = 0; i < count; ++i) {
40        surface->getCanvas()->drawPath(paths[i], paint);
41    }
42    surface->draw(canvas, 0, 0, NULL);
43
44    paint.setAntiAlias(true);
45    paint.setColor(SK_ColorRED);
46    paint.setStyle(SkPaint::kStroke_Style);
47    for (int j = 0; j < count; ++j) {
48        canvas->drawPath(paths[j], paint);
49    }
50
51    draw_pixel_centers(canvas);
52}
53
54class FatPathFillGM : public skiagm::GM {
55public:
56    FatPathFillGM() {}
57
58protected:
59
60    virtual SkString onShortName() {
61        return SkString("fatpathfill");
62    }
63
64    virtual SkISize onISize() {
65        return SkISize::Make(SMALL_W * ZOOM, SMALL_H * ZOOM * REPEAT_LOOP);
66    }
67
68    virtual void onDraw(SkCanvas* canvas) {
69        SkAutoTUnref<SkSurface> surface(new_surface(SMALL_W, SMALL_H));
70
71        canvas->scale(ZOOM, ZOOM);
72
73        SkPaint paint;
74        paint.setStyle(SkPaint::kStroke_Style);
75        paint.setStrokeWidth(SK_Scalar1);
76
77        for (int i = 0; i < REPEAT_LOOP; ++i) {
78            SkPath line, path;
79            line.moveTo(SkIntToScalar(1), SkIntToScalar(2));
80            line.lineTo(SkIntToScalar(4 + i), SkIntToScalar(1));
81            paint.getFillPath(line, &path);
82            draw_fatpath(canvas, surface, &path, 1);
83
84            canvas->translate(0, SMALL_H);
85        }
86    }
87
88private:
89    typedef skiagm::GM INHERITED;
90};
91
92///////////////////////////////////////////////////////////////////////////////
93
94DEF_GM(return new FatPathFillGM;)
95