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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_POINT_BUFFER_H__
#define CHROME_BROWSER_POINT_BUFFER_H__
#include <windows.h>
#include "base/basictypes.h"
////////////////////////////////////////////////////////////////////////////////
//
// PointBuffer class
//
// A facility to accumulate 2d points and produce polygon regions.
//
////////////////////////////////////////////////////////////////////////////////
class PointBuffer {
public:
//
// Create an empty path buffer
//
PointBuffer();
~PointBuffer();
//
// Add a point in the buffer
//
void AddPoint(const POINT &p);
void AddPoint(int x, int y);
//
// Return new polygon region matching the current points.
// It is the caller's responsability to delete the returned region by using
// ::DeleteObject()
//
HRGN GetCurrentPolygonRegion() const;
#if 0
void Log();
#endif
private:
//
// Grow the point buffer if we are out of space
//
void GrowPointBufferIfNeeded();
POINT *points_;
int next_;
int max_count_;
DISALLOW_EVIL_CONSTRUCTORS(PointBuffer);
};
#endif // CHROME_BROWSER_PATH_BUFFER_H__
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