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 "SkColorFilter.h"
10
11 #include "SkColorFilterImageFilter.h"
12 #include "SkDropShadowImageFilter.h"
13
14 ///////////////////////////////////////////////////////////////////////////////
15
draw_paint(SkCanvas * canvas,const SkRect & r,SkImageFilter * imf)16 static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
17 SkPaint paint;
18 paint.setImageFilter(imf);
19 paint.setColor(SK_ColorBLACK);
20 canvas->save();
21 canvas->clipRect(r);
22 canvas->drawPaint(paint);
23 canvas->restore();
24 }
25
draw_path(SkCanvas * canvas,const SkRect & r,SkImageFilter * imf)26 static void draw_path(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
27 SkPaint paint;
28 paint.setColor(SK_ColorGREEN);
29 paint.setImageFilter(imf);
30 paint.setAntiAlias(true);
31 canvas->save();
32 canvas->clipRect(r);
33 canvas->drawCircle(r.centerX(), r.centerY(), r.width()/3, paint);
34 canvas->restore();
35 }
36
draw_text(SkCanvas * canvas,const SkRect & r,SkImageFilter * imf)37 static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
38 SkPaint paint;
39 paint.setImageFilter(imf);
40 paint.setColor(SK_ColorGREEN);
41 paint.setAntiAlias(true);
42 sk_tool_utils::set_portable_typeface(&paint);
43 paint.setTextSize(r.height()/2);
44 paint.setTextAlign(SkPaint::kCenter_Align);
45 canvas->save();
46 canvas->clipRect(r);
47 canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint);
48 canvas->restore();
49 }
50
draw_bitmap(SkCanvas * canvas,const SkRect & r,SkImageFilter * imf)51 static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
52 SkPaint paint;
53
54 SkIRect bounds;
55 r.roundOut(&bounds);
56
57 SkBitmap bm;
58 bm.allocN32Pixels(bounds.width(), bounds.height());
59 bm.eraseColor(SK_ColorTRANSPARENT);
60 SkCanvas c(bm);
61 draw_path(&c, r, NULL);
62
63 paint.setImageFilter(imf);
64 canvas->save();
65 canvas->clipRect(r);
66 canvas->drawBitmap(bm, 0, 0, &paint);
67 canvas->restore();
68 }
69
draw_sprite(SkCanvas * canvas,const SkRect & r,SkImageFilter * imf)70 static void draw_sprite(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
71 SkPaint paint;
72
73 SkIRect bounds;
74 r.roundOut(&bounds);
75
76 SkBitmap bm;
77 bm.allocN32Pixels(bounds.width(), bounds.height());
78 bm.eraseColor(SK_ColorRED);
79 SkCanvas c(bm);
80
81 SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 44, 44);
82 paint.setColor(SK_ColorGREEN);
83 c.drawRect(SkRect::Make(cropRect), paint);
84
85 paint.setImageFilter(imf);
86 SkPoint loc = { r.fLeft, r.fTop };
87 canvas->getTotalMatrix().mapPoints(&loc, 1);
88 canvas->drawSprite(bm,
89 SkScalarRoundToInt(loc.fX), SkScalarRoundToInt(loc.fY),
90 &paint);
91 }
92
93 ///////////////////////////////////////////////////////////////////////////////
94
95 class DropShadowImageFilterGM : public skiagm::GM {
96 public:
DropShadowImageFilterGM()97 DropShadowImageFilterGM () {}
98
99 protected:
100
onShortName()101 virtual SkString onShortName() {
102 return SkString("dropshadowimagefilter");
103 }
104
onISize()105 virtual SkISize onISize() { return SkISize::Make(400, 656); }
106
draw_frame(SkCanvas * canvas,const SkRect & r)107 void draw_frame(SkCanvas* canvas, const SkRect& r) {
108 SkPaint paint;
109 paint.setStyle(SkPaint::kStroke_Style);
110 paint.setColor(SK_ColorRED);
111 canvas->drawRect(r, paint);
112 }
113
onDraw(SkCanvas * canvas)114 virtual void onDraw(SkCanvas* canvas) {
115 void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = {
116 draw_sprite, draw_bitmap, draw_path, draw_paint, draw_text
117 };
118
119 SkAutoTUnref<SkColorFilter> cf(
120 SkColorFilter::CreateModeFilter(SK_ColorMAGENTA, SkXfermode::kSrcIn_Mode));
121 SkAutoTUnref<SkImageFilter> cfif(SkColorFilterImageFilter::Create(cf.get()));
122 SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
123 SkImageFilter::CropRect::kHasAll_CropEdge);
124 SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)),
125 SkImageFilter::CropRect::kHasAll_CropEdge);
126
127 SkImageFilter* filters[] = {
128 NULL,
129 SkDropShadowImageFilter::Create(7.0f, 0.0f, 0.0f, 3.0f, SK_ColorBLUE,
130 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
131 SkDropShadowImageFilter::Create(0.0f, 7.0f, 3.0f, 0.0f, SK_ColorBLUE,
132 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
133 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
134 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
135 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
136 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, cfif, NULL),
137 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
138 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &cropRect),
139 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
140 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &bogusRect),
141 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
142 SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode),
143 };
144
145 SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
146 SkScalar MARGIN = SkIntToScalar(16);
147 SkScalar DX = r.width() + MARGIN;
148 SkScalar DY = r.height() + MARGIN;
149
150 canvas->translate(MARGIN, MARGIN);
151 for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) {
152 canvas->save();
153 for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
154 drawProc[j](canvas, r, filters[i]);
155 canvas->translate(0, DY);
156 }
157 canvas->restore();
158 canvas->translate(DX, 0);
159 }
160
161 for(size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
162 SkSafeUnref(filters[j]);
163 }
164 }
165
166 private:
167 typedef GM INHERITED;
168 };
169
170 ///////////////////////////////////////////////////////////////////////////////
171
MyFactory(void *)172 static skiagm::GM* MyFactory(void*) { return new DropShadowImageFilterGM; }
173 static skiagm::GMRegistry reg(MyFactory);
174