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 "SkGradientShader.h"
11#include "SkPath.h"
12#include "SkPictureRecorder.h"
13#include "SkSurface.h"
14
15static void draw(SkCanvas* canvas, int width, int height, SkColor colors[2]) {
16    const SkPoint center = { SkIntToScalar(width)/2, SkIntToScalar(height)/2 };
17    const SkScalar radius = 40;
18    SkPaint paint;
19    paint.setShader(SkGradientShader::MakeRadial(center, radius, colors, nullptr, 2,
20                                                 SkShader::kMirror_TileMode));
21    paint.setBlendMode(SkBlendMode::kSrc);
22    canvas->drawPaint(paint);
23}
24
25static sk_sp<SkImage> make_raster_image(int width, int height, SkColor colors[2]) {
26    auto surface(SkSurface::MakeRasterN32Premul(width, height));
27    draw(surface->getCanvas(), width, height, colors);
28    return surface->makeImageSnapshot();
29}
30
31static sk_sp<SkImage> make_picture_image(int width, int height, SkColor colors[2]) {
32    SkPictureRecorder recorder;
33    draw(recorder.beginRecording(SkRect::MakeIWH(width, height)), width, height, colors);
34    return SkImage::MakeFromPicture(recorder.finishRecordingAsPicture(),
35                                    SkISize::Make(width, height), nullptr, nullptr,
36                                    SkImage::BitDepth::kU8,
37                                    SkColorSpace::MakeSRGB());
38}
39
40typedef sk_sp<SkImage> (*ImageMakerProc)(int width, int height, SkColor colors[2]);
41
42static void show_image(SkCanvas* canvas, int width, int height, SkColor colors[2],
43                       ImageMakerProc proc) {
44    sk_sp<SkImage> image(proc(width, height, colors));
45
46    SkPaint borderPaint;
47
48    borderPaint.setStyle(SkPaint::kStroke_Style);
49
50    SkRect dstRect = SkRect::MakeWH(128.f, 128.f);
51
52    canvas->save();
53    canvas->clipRect(dstRect);
54    canvas->drawImage(image, 0, 0, nullptr);
55    canvas->restore();
56    canvas->drawRect(dstRect, borderPaint);
57
58    dstRect.offset(SkIntToScalar(150), 0);
59    int hw = width / 2;
60    int hh = height / 2;
61    SkIRect subset = SkIRect::MakeLTRB(hw - 64, hh - 32, hw + 64, hh + 32);
62    canvas->drawImageRect(image, subset, dstRect, nullptr);
63    canvas->drawRect(dstRect, borderPaint);
64
65    dstRect.offset(SkIntToScalar(150), 0);
66    canvas->drawImageRect(image, dstRect, nullptr);
67    canvas->drawRect(dstRect, borderPaint);
68}
69
70class VeryLargeBitmapGM : public skiagm::GM {
71    ImageMakerProc  fProc;
72    SkString        fName;
73
74public:
75    VeryLargeBitmapGM(ImageMakerProc proc, const char suffix[]) : fProc(proc) {
76        fName.printf("verylarge%s", suffix);
77    }
78
79protected:
80    SkString onShortName() override {
81        return fName;
82    }
83
84    SkISize onISize() override {
85        return SkISize::Make(500, 600);
86    }
87
88    void onDraw(SkCanvas* canvas) override {
89        int veryBig = 65*1024; // 64K < size
90        int big = 33*1024;     // 32K < size < 64K
91        // smaller than many max texture sizes, but large enough to gpu-tile for memory reasons.
92        int medium = 5*1024;
93        int small = 150;
94
95        SkColor colors[2];
96
97        canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
98        colors[0] = SK_ColorRED;
99        colors[1] = SK_ColorGREEN;
100        show_image(canvas, small, small, colors, fProc);
101        canvas->translate(0, SkIntToScalar(150));
102
103        colors[0] = SK_ColorBLUE;
104        colors[1] = SK_ColorMAGENTA;
105        show_image(canvas, big, small, colors, fProc);
106        canvas->translate(0, SkIntToScalar(150));
107
108        colors[0] = SK_ColorMAGENTA;
109        colors[1] = SK_ColorYELLOW;
110        show_image(canvas, medium, medium, colors, fProc);
111        canvas->translate(0, SkIntToScalar(150));
112
113        colors[0] = SK_ColorGREEN;
114        colors[1] = SK_ColorYELLOW;
115        // as of this writing, the raster code will fail to draw the scaled version
116        // since it has a 64K limit on x,y coordinates... (but gpu should succeed)
117        show_image(canvas, veryBig, small, colors, fProc);
118    }
119
120private:
121    typedef skiagm::GM INHERITED;
122};
123DEF_GM( return new VeryLargeBitmapGM(make_raster_image, "bitmap"); )
124DEF_GM( return new VeryLargeBitmapGM(make_picture_image, "_picture_image"); )
125