1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkArithmeticMode.h"
#include "SkBitmapSource.h"
#include "SkBlurImageFilter.h"
#include "SkColorFilter.h"
#include "SkColorFilterImageFilter.h"
#include "SkColorMatrixFilter.h"
#include "SkFlattenableBuffers.h"
#include "SkMergeImageFilter.h"
#include "SkMorphologyImageFilter.h"
#include "SkOnce.h"
#include "SkTestImageFilters.h"
#include "SkXfermodeImageFilter.h"
// More closely models how Blink's OffsetFilter works as of 10/23/13. SkOffsetImageFilter doesn't
// perform a draw and this one does.
class SimpleOffsetFilter : public SkImageFilter {
public:
SimpleOffsetFilter(SkScalar dx, SkScalar dy, SkImageFilter* input)
: SkImageFilter(input), fDX(dx), fDY(dy) {}
virtual bool onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
SkBitmap* dst, SkIPoint* offset) SK_OVERRIDE {
SkBitmap source = src;
SkImageFilter* input = getInput(0);
SkIPoint srcOffset = SkIPoint::Make(0, 0);
if (NULL != input && !input->filterImage(proxy, src, ctm, &source, &srcOffset)) {
return false;
}
SkIRect bounds;
source.getBounds(&bounds);
if (!this->applyCropRect(&bounds, ctm)) {
return false;
}
SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
SkCanvas canvas(device);
SkPaint paint;
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
canvas.drawBitmap(source, fDX - bounds.left(), fDY - bounds.top(), &paint);
*dst = device->accessBitmap(false);
offset->fX += bounds.left();
offset->fY += bounds.top();
return true;
}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SimpleOffsetFilter);
protected:
explicit SimpleOffsetFilter(SkFlattenableReadBuffer& buffer)
: SkImageFilter(1, buffer) {
fDX = buffer.readScalar();
fDY = buffer.readScalar();
}
virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE {
this->SkImageFilter::flatten(buffer);
buffer.writeScalar(fDX);
buffer.writeScalar(fDY);
}
private:
SkScalar fDX, fDY;
};
static void init_flattenable(int*) {
SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SimpleOffsetFilter)
}
class ImageFiltersGraphGM : public skiagm::GM {
public:
ImageFiltersGraphGM() : fInitialized(false) {
int dummy;
SK_DECLARE_STATIC_ONCE(once);
SkOnce(&once, init_flattenable, &dummy);
}
protected:
virtual SkString onShortName() {
return SkString("imagefiltersgraph");
}
void make_bitmap() {
fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
fBitmap.allocPixels();
SkBitmapDevice device(fBitmap);
SkCanvas canvas(&device);
canvas.clear(0x00000000);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFFFFFFFF);
paint.setTextSize(SkIntToScalar(96));
const char* str = "e";
canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
}
void drawClippedBitmap(SkCanvas* canvas, const SkBitmap& bitmap, const SkPaint& paint) {
canvas->save();
canvas->clipRect(SkRect::MakeXYWH(0, 0,
SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height())));
canvas->drawBitmap(bitmap, 0, 0, &paint);
canvas->restore();
}
virtual SkISize onISize() { return SkISize::Make(500, 150); }
virtual void onDraw(SkCanvas* canvas) {
if (!fInitialized) {
this->make_bitmap();
fInitialized = true;
}
canvas->clear(0x00000000);
{
SkAutoTUnref<SkImageFilter> bitmapSource(new SkBitmapSource(fBitmap));
SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(SK_ColorRED,
SkXfermode::kSrcIn_Mode));
SkAutoTUnref<SkImageFilter> blur(new SkBlurImageFilter(4.0f, 4.0f, bitmapSource));
SkAutoTUnref<SkImageFilter> erode(new SkErodeImageFilter(4, 4, blur));
SkAutoTUnref<SkImageFilter> color(SkColorFilterImageFilter::Create(cf, erode));
SkAutoTUnref<SkImageFilter> merge(new SkMergeImageFilter(blur, color));
SkPaint paint;
paint.setImageFilter(merge);
canvas->drawPaint(paint);
canvas->translate(SkIntToScalar(100), 0);
}
{
SkAutoTUnref<SkImageFilter> morph(new SkDilateImageFilter(5, 5));
SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0,
0, SK_Scalar1, 0, 0, 0,
0, 0, SK_Scalar1, 0, 0,
0, 0, 0, 0.5f, 0 };
SkAutoTUnref<SkColorFilter> matrixFilter(new SkColorMatrixFilter(matrix));
SkAutoTUnref<SkImageFilter> colorMorph(SkColorFilterImageFilter::Create(matrixFilter, morph));
SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kSrcOver_Mode));
SkAutoTUnref<SkImageFilter> blendColor(new SkXfermodeImageFilter(mode, colorMorph));
SkPaint paint;
paint.setImageFilter(blendColor);
drawClippedBitmap(canvas, fBitmap, paint);
canvas->translate(SkIntToScalar(100), 0);
}
{
SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0,
0, SK_Scalar1, 0, 0, 0,
0, 0, SK_Scalar1, 0, 0,
0, 0, 0, 0.5f, 0 };
SkColorMatrixFilter matrixCF(matrix);
SkAutoTUnref<SkImageFilter> matrixFilter(SkColorFilterImageFilter::Create(&matrixCF));
SimpleOffsetFilter offsetFilter(SkIntToScalar(10), SkIntToScalar(10), matrixFilter);
SkAutoTUnref<SkXfermode> arith(SkArithmeticMode::Create(0, SK_Scalar1, SK_Scalar1, 0));
SkXfermodeImageFilter arithFilter(arith, matrixFilter, &offsetFilter);
SkPaint paint;
paint.setImageFilter(&arithFilter);
drawClippedBitmap(canvas, fBitmap, paint);
canvas->translate(SkIntToScalar(100), 0);
}
{
SkAutoTUnref<SkImageFilter> blur(new SkBlurImageFilter(
SkIntToScalar(10), SkIntToScalar(10)));
SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kSrcIn_Mode));
SkImageFilter::CropRect cropRect(SkRect::MakeWH(SkIntToScalar(95), SkIntToScalar(100)));
SkAutoTUnref<SkImageFilter> blend(new SkXfermodeImageFilter(mode, blur, NULL, &cropRect));
SkPaint paint;
paint.setImageFilter(blend);
drawClippedBitmap(canvas, fBitmap, paint);
canvas->translate(SkIntToScalar(100), 0);
}
{
// Test that crop offsets are absolute, not relative to the parent's crop rect.
SkAutoTUnref<SkColorFilter> cf1(SkColorFilter::CreateModeFilter(SK_ColorBLUE,
SkXfermode::kSrcIn_Mode));
SkAutoTUnref<SkColorFilter> cf2(SkColorFilter::CreateModeFilter(SK_ColorGREEN,
SkXfermode::kSrcIn_Mode));
SkImageFilter::CropRect outerRect(SkRect::MakeXYWH(SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(80), SkIntToScalar(80)));
SkImageFilter::CropRect innerRect(SkRect::MakeXYWH(SkIntToScalar(20), SkIntToScalar(20),
SkIntToScalar(60), SkIntToScalar(60)));
SkAutoTUnref<SkImageFilter> color1(SkColorFilterImageFilter::Create(cf1, NULL, &outerRect));
SkAutoTUnref<SkImageFilter> color2(SkColorFilterImageFilter::Create(cf2, color1, &innerRect));
SkPaint paint;
paint.setImageFilter(color2);
paint.setColor(0xFFFF0000);
canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), paint);
canvas->translate(SkIntToScalar(100), 0);
}
}
private:
typedef GM INHERITED;
SkBitmap fBitmap;
bool fInitialized;
};
///////////////////////////////////////////////////////////////////////////////
static skiagm::GM* MyFactory(void*) { return new ImageFiltersGraphGM; }
static skiagm::GMRegistry reg(MyFactory);
|
