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      1 /*
      2  * Copyright 2010 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 
      8 #include "SkBlitter.h"
      9 #include "SkPath.h"
     10 #include "SkRegion.h"
     11 #include "SkScan.h"
     12 #include "Test.h"
     13 
     14 struct FakeBlitter : public SkBlitter {
     15     FakeBlitter()
     16         : m_blitCount(0) { }
     17 
     18     void blitH(int x, int y, int width) override {
     19         m_blitCount++;
     20     }
     21 
     22     void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override {
     23       SkDEBUGFAIL("blitAntiH not implemented");
     24     }
     25 
     26     int m_blitCount;
     27 };
     28 
     29 // http://code.google.com/p/skia/issues/detail?id=87
     30 // Lines which is not clipped by boundary based clipping,
     31 // but skipped after tessellation, should be cleared by the blitter.
     32 DEF_TEST(FillPathInverse, reporter) {
     33     FakeBlitter blitter;
     34     SkIRect clip;
     35     SkPath path;
     36     int height = 100;
     37     int width  = 200;
     38     int expected_lines = 5;
     39     clip.set(0, height - expected_lines, width, height);
     40     path.moveTo(0.0f, 0.0f);
     41     path.quadTo(SkIntToScalar(width/2), SkIntToScalar(height),
     42               SkIntToScalar(width), 0.0f);
     43     path.close();
     44     path.setFillType(SkPath::kInverseWinding_FillType);
     45     SkScan::FillPath(path, clip, &blitter);
     46 
     47     REPORTER_ASSERT(reporter, blitter.m_blitCount == expected_lines);
     48 }
     49