1 /*
2 * Copyright 2011 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
10 #if SK_SUPPORT_GPU
11 #include "SkGpuDevice.h"
12 #else
13 class GrContext;
14 #endif
15
make_bitmap(SkBitmap * bitmap,GrContext * ctx,SkIRect * center)16 static void make_bitmap(SkBitmap* bitmap, GrContext* ctx, SkIRect* center) {
17 SkBaseDevice* dev;
18
19 const int kFixed = 28;
20 const int kStretchy = 8;
21 const int kSize = 2*kFixed + kStretchy;
22
23 #if SK_SUPPORT_GPU
24 if (ctx) {
25 dev = new SkGpuDevice(ctx, SkBitmap::kARGB_8888_Config, kSize, kSize);
26 *bitmap = dev->accessBitmap(false);
27 } else
28 #endif
29 {
30 bitmap->setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize);
31 bitmap->allocPixels();
32 dev = new SkBitmapDevice(*bitmap);
33 }
34
35 SkCanvas canvas(dev);
36 dev->unref();
37 canvas.clear(SK_ColorTRANSPARENT);
38
39 SkRect r = SkRect::MakeWH(SkIntToScalar(kSize), SkIntToScalar(kSize));
40 const SkScalar strokeWidth = SkIntToScalar(6);
41 const SkScalar radius = SkIntToScalar(kFixed) - strokeWidth/2;
42
43 center->setXYWH(kFixed, kFixed, kStretchy, kStretchy);
44
45 SkPaint paint;
46 paint.setAntiAlias(true);
47
48 paint.setColor(0xFFFF0000);
49 canvas.drawRoundRect(r, radius, radius, paint);
50 r.setXYWH(SkIntToScalar(kFixed), 0, SkIntToScalar(kStretchy), SkIntToScalar(kSize));
51 paint.setColor(0x8800FF00);
52 canvas.drawRect(r, paint);
53 r.setXYWH(0, SkIntToScalar(kFixed), SkIntToScalar(kSize), SkIntToScalar(kStretchy));
54 paint.setColor(0x880000FF);
55 canvas.drawRect(r, paint);
56 }
57
58 namespace skiagm {
59
60 class NinePatchStretchGM : public GM {
61 public:
62 SkBitmap fBM;
63
NinePatchStretchGM()64 NinePatchStretchGM() {}
65
66 protected:
onShortName()67 virtual SkString onShortName() {
68 return SkString("ninepatch-stretch");
69 }
70
onISize()71 virtual SkISize onISize() {
72 return make_isize(400, 400);
73 }
74
onDraw(SkCanvas * canvas)75 virtual void onDraw(SkCanvas* canvas) {
76 SkBitmap bm;
77 SkIRect center;
78 make_bitmap(&bm, NULL /*SampleCode::GetGr()*/, ¢er);
79
80 // amount of bm that should not be stretched (unless we have to)
81 const SkScalar fixed = SkIntToScalar(bm.width() - center.width());
82
83 const SkTSize<SkScalar> size[] = {
84 { fixed * 4 / 5, fixed * 4 / 5 }, // shrink in both axes
85 { fixed * 4 / 5, fixed * 4 }, // shrink in X
86 { fixed * 4, fixed * 4 / 5 }, // shrink in Y
87 { fixed * 4, fixed * 4 }
88 };
89
90 canvas->drawBitmap(bm, SkIntToScalar(10), SkIntToScalar(10), NULL);
91
92 SkScalar x = SkIntToScalar(100);
93 SkScalar y = SkIntToScalar(100);
94
95 SkPaint paint;
96 paint.setFilterLevel(SkPaint::kLow_FilterLevel);
97
98 for (int iy = 0; iy < 2; ++iy) {
99 for (int ix = 0; ix < 2; ++ix) {
100 int i = ix * 2 + iy;
101 SkRect r = SkRect::MakeXYWH(x + ix * fixed, y + iy * fixed,
102 size[i].width(), size[i].height());
103 canvas->drawBitmapNine(bm, center, r, &paint);
104 }
105 }
106 }
107
108 private:
109 typedef GM INHERITED;
110 };
111
112 //////////////////////////////////////////////////////////////////////////////
113
MyFactory(void *)114 static GM* MyFactory(void*) { return new NinePatchStretchGM; }
115 static GMRegistry reg(MyFactory);
116
117 }
118