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
8 #include "gm.h"
9 #include "SkCanvas.h"
10 #include "SkBlurImageFilter.h"
11 #include "SkRSXform.h"
12 #include "SkSurface.h"
13
make_bm(SkBitmap * bm)14 static void make_bm(SkBitmap* bm) {
15 bm->allocN32Pixels(100, 100);
16 bm->eraseColor(SK_ColorBLUE);
17
18 SkCanvas canvas(*bm);
19 SkPaint paint;
20 paint.setAntiAlias(true);
21 paint.setColor(SK_ColorRED);
22 canvas.drawCircle(50, 50, 50, paint);
23 }
24
draw_1_bitmap(SkCanvas * canvas,const SkBitmap & bm,bool doClip,int dx,int dy,sk_sp<SkImageFilter> filter)25 static void draw_1_bitmap(SkCanvas* canvas, const SkBitmap& bm, bool doClip,
26 int dx, int dy, sk_sp<SkImageFilter> filter) {
27 SkAutoCanvasRestore acr(canvas, true);
28 SkPaint paint;
29
30 SkRect clipR = SkRect::MakeXYWH(SkIntToScalar(dx),
31 SkIntToScalar(dy),
32 SkIntToScalar(bm.width()),
33 SkIntToScalar(bm.height()));
34
35 paint.setImageFilter(std::move(filter));
36 clipR.inset(5, 5);
37
38 canvas->translate(SkIntToScalar(bm.width() + 20), 0);
39
40 if (doClip) {
41 canvas->save();
42 canvas->clipRect(clipR);
43 }
44 canvas->drawBitmap(bm, SkIntToScalar(dx), SkIntToScalar(dy), &paint);
45 if (doClip) {
46 canvas->restore();
47 }
48 }
49
50 /**
51 * Compare output of drawSprite and drawBitmap (esp. clipping and imagefilters)
52 */
53 class SpriteBitmapGM : public skiagm::GM {
54 public:
SpriteBitmapGM()55 SpriteBitmapGM() {}
56
57 protected:
58
onShortName()59 SkString onShortName() override {
60 return SkString("spritebitmap");
61 }
62
onISize()63 SkISize onISize() override {
64 return SkISize::Make(640, 480);
65 }
66
onDraw(SkCanvas * canvas)67 void onDraw(SkCanvas* canvas) override {
68 SkBitmap bm;
69 make_bm(&bm);
70
71 int dx = 10;
72 int dy = 10;
73
74 SkScalar sigma = 8;
75 sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(sigma, sigma, nullptr));
76
77 draw_1_bitmap(canvas, bm, false, dx, dy, nullptr);
78 dy += bm.height() + 20;
79 draw_1_bitmap(canvas, bm, false, dx, dy, filter);
80 dy += bm.height() + 20;
81 draw_1_bitmap(canvas, bm, true, dx, dy, nullptr);
82 dy += bm.height() + 20;
83 draw_1_bitmap(canvas, bm, true, dx, dy, filter);
84 }
85
86 private:
87 typedef GM INHERITED;
88 };
89 DEF_GM( return new SpriteBitmapGM; )
90