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
make_bm(SkBitmap * bm)12 static void make_bm(SkBitmap* bm) {
13 bm->setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
14 bm->allocPixels();
15 bm->eraseColor(SK_ColorBLUE);
16
17 SkCanvas canvas(*bm);
18 SkPaint paint;
19 paint.setAntiAlias(true);
20 paint.setColor(SK_ColorRED);
21 canvas.drawCircle(50, 50, 50, paint);
22 }
23
draw_2_bitmaps(SkCanvas * canvas,const SkBitmap & bm,bool doClip,int dx,int dy,SkImageFilter * filter=NULL)24 static void draw_2_bitmaps(SkCanvas* canvas, const SkBitmap& bm, bool doClip,
25 int dx, int dy, SkImageFilter* filter = NULL) {
26 SkAutoCanvasRestore acr(canvas, true);
27 SkPaint paint;
28
29 SkRect clipR = SkRect::MakeXYWH(SkIntToScalar(dx),
30 SkIntToScalar(dy),
31 SkIntToScalar(bm.width()),
32 SkIntToScalar(bm.height()));
33
34 paint.setImageFilter(filter);
35 clipR.inset(5, 5);
36
37 if (doClip) {
38 canvas->save();
39 canvas->clipRect(clipR);
40 }
41 canvas->drawSprite(bm, dx, dy, &paint);
42 if (doClip) {
43 canvas->restore();
44 }
45
46 canvas->translate(SkIntToScalar(bm.width() + 20), 0);
47
48 if (doClip) {
49 canvas->save();
50 canvas->clipRect(clipR);
51 }
52 canvas->drawBitmap(bm, SkIntToScalar(dx), SkIntToScalar(dy), &paint);
53 if (doClip) {
54 canvas->restore();
55 }
56 }
57
58 /**
59 * Compare output of drawSprite and drawBitmap (esp. clipping and imagefilters)
60 */
61 class SpriteBitmapGM : public skiagm::GM {
62 public:
SpriteBitmapGM()63 SpriteBitmapGM() {}
64
65 protected:
onShortName()66 virtual SkString onShortName() {
67 return SkString("spritebitmap");
68 }
69
onISize()70 virtual SkISize onISize() {
71 return SkISize::Make(640, 480);
72 }
73
onDraw(SkCanvas * canvas)74 virtual void onDraw(SkCanvas* canvas) {
75 SkBitmap bm;
76 make_bm(&bm);
77
78 int dx = 10;
79 int dy = 10;
80
81 SkScalar sigma = 8;
82 SkAutoTUnref<SkImageFilter> filter(new SkBlurImageFilter(sigma, sigma));
83
84 draw_2_bitmaps(canvas, bm, false, dx, dy);
85 dy += bm.height() + 20;
86 draw_2_bitmaps(canvas, bm, false, dx, dy, filter);
87 dy += bm.height() + 20;
88 draw_2_bitmaps(canvas, bm, true, dx, dy);
89 dy += bm.height() + 20;
90 draw_2_bitmaps(canvas, bm, true, dx, dy, filter);
91 }
92
93 private:
94 typedef GM INHERITED;
95 };
96
97 //////////////////////////////////////////////////////////////////////////////
98
99 DEF_GM( return new SpriteBitmapGM; )
100