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      1 /*
      2  * Copyright (C) 2010 The Chromium Authors. All rights reserved.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "Test.h"
     18 #include "SkRegion.h"
     19 #include "SkPath.h"
     20 #include "SkScan.h"
     21 #include "SkBlitter.h"
     22 
     23 namespace {
     24 
     25 struct FakeBlitter : public SkBlitter {
     26   FakeBlitter()
     27       : m_blitCount(0)
     28   {}
     29 
     30   virtual void blitH(int x, int y, int width) {
     31     m_blitCount++;
     32   }
     33 
     34   int m_blitCount;
     35 };
     36 
     37 }
     38 
     39 // http://code.google.com/p/skia/issues/detail?id=87
     40 // Lines which is not clipped by boundary based clipping,
     41 // but skipped after tessellation, should be cleared by the blitter.
     42 static void TestFillPathInverse(skiatest::Reporter* reporter) {
     43   FakeBlitter blitter;
     44   SkRegion clip;
     45   SkPath path;
     46   int height = 100;
     47   int width  = 200;
     48   int expected_lines = 5;
     49   clip.setRect(0, height - expected_lines, width, height);
     50   path.moveTo(0.0, 0.0);
     51   path.quadTo(width/2, height, width, 0.0);
     52   path.close();
     53   path.setFillType(SkPath::kInverseWinding_FillType);
     54   SkScan::FillPath(path, clip, &blitter);
     55 
     56   REPORTER_ASSERT(reporter, blitter.m_blitCount == expected_lines);
     57 }
     58 
     59 #include "TestClassDef.h"
     60 DEFINE_TESTCLASS("FillPath", FillPathTestClass, TestFillPathInverse)
     61