1/*
2 * Copyright 2013 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#include "Benchmark.h"
8#include "SkBitmapDevice.h"
9#include "SkCanvas.h"
10#include "SkMagnifierImageFilter.h"
11#include "SkRandom.h"
12
13#define FILTER_WIDTH_SMALL  32
14#define FILTER_HEIGHT_SMALL 32
15#define FILTER_WIDTH_LARGE  256
16#define FILTER_HEIGHT_LARGE 256
17
18class MagnifierBench : public Benchmark {
19public:
20    MagnifierBench(bool small) :
21        fIsSmall(small), fInitialized(false) {
22    }
23
24protected:
25    virtual const char* onGetName() SK_OVERRIDE {
26        return fIsSmall ? "magnifier_small" : "magnifier_large";
27    }
28
29    virtual void onPreDraw() SK_OVERRIDE {
30        if (!fInitialized) {
31            make_checkerboard();
32            fInitialized = true;
33        }
34    }
35
36    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
37        const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
38        const int h = fIsSmall ? FILTER_HEIGHT_SMALL : FILTER_HEIGHT_LARGE;
39        SkPaint paint;
40        paint.setImageFilter(
41            SkMagnifierImageFilter::Create(
42                SkRect::MakeXYWH(SkIntToScalar(w / 4),
43                                 SkIntToScalar(h / 4),
44                                 SkIntToScalar(w / 2),
45                                 SkIntToScalar(h / 2)), 100))->unref();
46
47        for (int i = 0; i < loops; i++) {
48            canvas->drawBitmap(fCheckerboard, 0, 0, &paint);
49        }
50    }
51
52private:
53    void make_checkerboard() {
54        const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
55        const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
56        fCheckerboard.allocN32Pixels(w, h);
57        SkCanvas canvas(fCheckerboard);
58        canvas.clear(0x00000000);
59        SkPaint darkPaint;
60        darkPaint.setColor(0xFF804020);
61        SkPaint lightPaint;
62        lightPaint.setColor(0xFF244484);
63        for (int y = 0; y < h; y += 16) {
64            for (int x = 0; x < w; x += 16) {
65                canvas.save();
66                canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
67                canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
68                canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
69                canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
70                canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
71                canvas.restore();
72            }
73        }
74    }
75
76    bool fIsSmall;
77    bool fInitialized;
78    SkBitmap fCheckerboard;
79    typedef Benchmark INHERITED;
80};
81
82///////////////////////////////////////////////////////////////////////////////
83
84DEF_BENCH( return new MagnifierBench(true); )
85DEF_BENCH( return new MagnifierBench(false); )
86