SkPathHeap.cpp revision ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976e 
1
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8#include "SkPathHeap.h"
9#include "SkPath.h"
10#include "SkStream.h"
11#include "SkFlattenable.h"
12#include <new>
13
14#define kPathCount  64
15
16SkPathHeap::SkPathHeap() : fHeap(kPathCount * sizeof(SkPath)) {
17}
18
19SkPathHeap::SkPathHeap(SkFlattenableReadBuffer& buffer)
20            : fHeap(kPathCount * sizeof(SkPath)) {
21    int count = buffer.readS32();
22
23    fPaths.setCount(count);
24    SkPath** ptr = fPaths.begin();
25    SkPath* p = (SkPath*)fHeap.allocThrow(count * sizeof(SkPath));
26
27    for (int i = 0; i < count; i++) {
28        new (p) SkPath;
29        p->unflatten(buffer);
30        *ptr++ = p; // record the pointer
31        p++;        // move to the next storage location
32    }
33}
34
35SkPathHeap::~SkPathHeap() {
36    SkPath** iter = fPaths.begin();
37    SkPath** stop = fPaths.end();
38    while (iter < stop) {
39        (*iter)->~SkPath();
40        iter++;
41    }
42}
43
44int SkPathHeap::append(const SkPath& path) {
45    SkPath* p = (SkPath*)fHeap.allocThrow(sizeof(SkPath));
46    new (p) SkPath(path);
47    *fPaths.append() = p;
48    return fPaths.count();
49}
50
51void SkPathHeap::flatten(SkFlattenableWriteBuffer& buffer) const {
52    int count = fPaths.count();
53
54    buffer.write32(count);
55    SkPath** iter = fPaths.begin();
56    SkPath** stop = fPaths.end();
57    while (iter < stop) {
58        (*iter)->flatten(buffer);
59        iter++;
60    }
61}
62
63