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
|
/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPaintImageFilter.h"
#include "SkCanvas.h"
#include "SkReadBuffer.h"
#include "SkSpecialImage.h"
#include "SkSpecialSurface.h"
#include "SkWriteBuffer.h"
sk_sp<SkImageFilter> SkPaintImageFilter::Make(const SkPaint& paint,
const CropRect* cropRect) {
return sk_sp<SkImageFilter>(new SkPaintImageFilter(paint, cropRect));
}
SkPaintImageFilter::SkPaintImageFilter(const SkPaint& paint, const CropRect* cropRect)
: INHERITED(nullptr, 0, cropRect)
, fPaint(paint) {
}
sk_sp<SkFlattenable> SkPaintImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
SkPaint paint;
buffer.readPaint(&paint);
return SkPaintImageFilter::Make(paint, &common.cropRect());
}
void SkPaintImageFilter::flatten(SkWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writePaint(fPaint);
}
sk_sp<SkSpecialImage> SkPaintImageFilter::onFilterImage(SkSpecialImage* source,
const Context& ctx,
SkIPoint* offset) const {
SkIRect bounds;
const SkIRect srcBounds = SkIRect::MakeWH(source->width(), source->height());
if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
return nullptr;
}
SkImageInfo info = SkImageInfo::MakeN32(bounds.width(), bounds.height(),
kPremul_SkAlphaType);
sk_sp<SkSpecialSurface> surf(source->makeSurface(info));
if (!surf) {
return nullptr;
}
SkCanvas* canvas = surf->getCanvas();
SkASSERT(canvas);
canvas->clear(0x0);
SkMatrix matrix(ctx.ctm());
matrix.postTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
SkRect rect = SkRect::MakeIWH(bounds.width(), bounds.height());
SkMatrix inverse;
if (matrix.invert(&inverse)) {
inverse.mapRect(&rect);
}
canvas->setMatrix(matrix);
canvas->drawRect(rect, fPaint);
offset->fX = bounds.fLeft;
offset->fY = bounds.fTop;
return surf->makeImageSnapshot();
}
bool SkPaintImageFilter::affectsTransparentBlack() const {
return true;
}
#ifndef SK_IGNORE_TO_STRING
void SkPaintImageFilter::toString(SkString* str) const {
str->appendf("SkPaintImageFilter: (");
fPaint.toString(str);
str->append(")");
}
#endif
|
