1/*
2 * Copyright 2015 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 "SkImage.h"
11#include "SkRandom.h"
12#include "SkSurface.h"
13
14static SkImage* make_image() {
15    const SkImageInfo info = SkImageInfo::MakeN32Premul(319, 52);
16    SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
17    SkCanvas* canvas = surface->getCanvas();
18    canvas->drawColor(0xFFF8F8F8);
19
20    SkPaint paint;
21    paint.setAntiAlias(true);
22
23    paint.setStyle(SkPaint::kStroke_Style);
24    for (int i = 0; i < 20; ++i) {
25        canvas->drawCircle(-4, 25, 20, paint);
26        canvas->translate(25, 0);
27    }
28    return surface->newImageSnapshot();
29}
30
31static void test_mip(SkCanvas* canvas) {
32    SkAutoTUnref<SkImage> img(make_image());//SkImage::NewFromData(data));
33
34    SkPaint paint;
35    const SkRect dst = SkRect::MakeWH(177, 15);
36
37    paint.setTextSize(30);
38    SkString str;
39    str.printf("scale %g %g", dst.width() / img->width(), dst.height() / img->height());
40//    canvas->drawText(str.c_str(), str.size(), 300, 100, paint);
41
42    canvas->translate(20, 20);
43    for (int i = 0; i < 4; ++i) {
44        paint.setFilterQuality(SkFilterQuality(i));
45        canvas->drawImageRect(img, NULL, dst, &paint);
46        canvas->translate(0, 20);
47    }
48    canvas->drawImage(img, 20, 20, NULL);
49}
50
51class MipMapGM : public skiagm::GM {
52public:
53    MipMapGM() {}
54
55protected:
56    SkString onShortName() override { return SkString("mipmap"); }
57
58    SkISize onISize() override { return SkISize::Make(400, 200); }
59
60    void onDraw(SkCanvas* canvas) override {
61        test_mip(canvas);
62    }
63
64private:
65    typedef skiagm::GM INHERITED;
66};
67DEF_GM( return new MipMapGM; )
68
69