gfx/skia/trunk/src/core/SkDrawLooper.cpp@deefc01c0e14
gfx/skia/trunk/src/core/SkDrawLooper.cpp
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
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 */
8 #include "SkDrawLooper.h"
9 #include "SkCanvas.h"
10 #include "SkMatrix.h"
11 #include "SkPaint.h"
12 #include "SkRect.h"
13 #include "SkSmallAllocator.h"
15 bool SkDrawLooper::canComputeFastBounds(const SkPaint& paint) const {
16 SkCanvas canvas;
17 SkSmallAllocator<1, 32> allocator;
18 void* buffer = allocator.reserveT<SkDrawLooper::Context>(this->contextSize());
20 SkDrawLooper::Context* context = this->createContext(&canvas, buffer);
21 for (;;) {
22 SkPaint p(paint);
23 if (context->next(&canvas, &p)) {
24 p.setLooper(NULL);
25 if (!p.canComputeFastBounds()) {
26 return false;
27 }
28 } else {
29 break;
30 }
31 }
32 return true;
33 }
35 void SkDrawLooper::computeFastBounds(const SkPaint& paint, const SkRect& src,
36 SkRect* dst) const {
37 SkCanvas canvas;
38 SkSmallAllocator<1, 32> allocator;
39 void* buffer = allocator.reserveT<SkDrawLooper::Context>(this->contextSize());
41 *dst = src; // catch case where there are no loops
42 SkDrawLooper::Context* context = this->createContext(&canvas, buffer);
43 for (bool firstTime = true;; firstTime = false) {
44 SkPaint p(paint);
45 if (context->next(&canvas, &p)) {
46 SkRect r(src);
48 p.setLooper(NULL);
49 p.computeFastBounds(r, &r);
50 canvas.getTotalMatrix().mapRect(&r);
52 if (firstTime) {
53 *dst = r;
54 } else {
55 dst->join(r);
56 }
57 } else {
58 break;
59 }
60 }
61 }
