blob: db6bd5433acedb1b79d56f7fe5ae335b82646092 (
plain)
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
|
/*
* 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 "SkArenaAlloc.h"
#include "SkDrawLooper.h"
#include "SkCanvas.h"
#include "SkMatrix.h"
#include "SkPaint.h"
#include "SkRect.h"
bool SkDrawLooper::canComputeFastBounds(const SkPaint& paint) const {
SkCanvas canvas;
SkSTArenaAlloc<48> alloc;
SkDrawLooper::Context* context = this->makeContext(&canvas, &alloc);
for (;;) {
SkPaint p(paint);
if (context->next(&canvas, &p)) {
p.setLooper(nullptr);
if (!p.canComputeFastBounds()) {
return false;
}
} else {
break;
}
}
return true;
}
void SkDrawLooper::computeFastBounds(const SkPaint& paint, const SkRect& s,
SkRect* dst) const {
// src and dst rects may alias and we need to keep the original src, so copy it.
const SkRect src = s;
SkCanvas canvas;
SkSTArenaAlloc<48> alloc;
*dst = src; // catch case where there are no loops
SkDrawLooper::Context* context = this->makeContext(&canvas, &alloc);
for (bool firstTime = true;; firstTime = false) {
SkPaint p(paint);
if (context->next(&canvas, &p)) {
SkRect r(src);
p.setLooper(nullptr);
p.computeFastBounds(r, &r);
canvas.getTotalMatrix().mapRect(&r);
if (firstTime) {
*dst = r;
} else {
dst->join(r);
}
} else {
break;
}
}
}
bool SkDrawLooper::asABlurShadow(BlurShadowRec*) const {
return false;
}
|
