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
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkTileImageFilter.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkDevice.h"
#include "SkFlattenableBuffers.h"
#include "SkMatrix.h"
#include "SkPaint.h"
#include "SkShader.h"
#include "SkValidationUtils.h"
bool SkTileImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
SkBitmap* dst, SkIPoint* offset) {
SkBitmap source = src;
SkImageFilter* input = getInput(0);
SkIPoint localOffset = SkIPoint::Make(0, 0);
if (input && !input->filterImage(proxy, src, ctm, &source, &localOffset)) {
return false;
}
int w = SkScalarTruncToInt(fDstRect.width());
int h = SkScalarTruncToInt(fDstRect.height());
if (!fSrcRect.width() || !fSrcRect.height() || !w || !h) {
return false;
}
SkIRect srcRect;
fSrcRect.roundOut(&srcRect);
SkBitmap subset;
if (!source.extractSubset(&subset, srcRect)) {
return false;
}
SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(w, h));
SkIRect bounds;
source.getBounds(&bounds);
SkCanvas canvas(device);
SkPaint paint;
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(subset,
SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
paint.setShader(shader);
SkRect dstRect = fDstRect;
dstRect.offset(SkIntToScalar(localOffset.fX), SkIntToScalar(localOffset.fY));
canvas.drawRect(dstRect, paint);
*dst = device->accessBitmap(false);
return true;
}
SkTileImageFilter::SkTileImageFilter(SkFlattenableReadBuffer& buffer)
: INHERITED(1, buffer) {
buffer.readRect(&fSrcRect);
buffer.readRect(&fDstRect);
buffer.validate(SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect));
}
void SkTileImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writeRect(fSrcRect);
buffer.writeRect(fDstRect);
}
|
