1 /*
2  * Copyright 2014 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  */
7 #include "SkOpEdgeBuilder.h"
8 #include "SkPathOpsCommon.h"
9 
TightBounds(const SkPath & path,SkRect * result)10 bool TightBounds(const SkPath& path, SkRect* result) {
11     SkChunkAlloc allocator(4096);  // FIXME: constant-ize, tune
12     SkOpContour contour;
13     SkOpContourHead* contourList = static_cast<SkOpContourHead*>(&contour);
14     SkOpGlobalState globalState(NULL, contourList);
15     // turn path into list of segments
16     SkOpEdgeBuilder builder(path, &contour, &allocator, &globalState);
17     if (!builder.finish(&allocator)) {
18         return false;
19     }
20     if (!SortContourList(&contourList, false, false)) {
21         result->setEmpty();
22         return true;
23     }
24     SkOpContour* current = contourList;
25     SkPathOpsBounds bounds = current->bounds();
26     while ((current = current->next())) {
27         bounds.add(current->bounds());
28     }
29     *result = bounds;
30     return true;
31 }
32