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/*
* Copyright (C) 2006, 2007 Eric Seidel <eric@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PATH_TRAVERSAL_STATE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PATH_TRAVERSAL_STATE_H_
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "ui/gfx/geometry/point_f.h"
namespace blink {
class PLATFORM_EXPORT PathTraversalState final {
STACK_ALLOCATED();
public:
enum PathTraversalAction {
kTraversalTotalLength,
kTraversalPointAtLength,
kTraversalNormalAngleAtLength
};
PathTraversalState(PathTraversalAction);
PathTraversalState(const PathTraversalState&) = delete;
PathTraversalState& operator=(const PathTraversalState&) = delete;
float CloseSubpath();
float MoveTo(const gfx::PointF&);
float LineTo(const gfx::PointF&);
float CubicBezierTo(const gfx::PointF& new_control1,
const gfx::PointF& new_control2,
const gfx::PointF& new_end);
void ProcessSegment();
public:
PathTraversalAction action_;
bool success_;
gfx::PointF current_;
gfx::PointF start_;
float total_length_;
float desired_length_;
// For normal calculations
gfx::PointF previous_;
float normal_angle_; // degrees
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PATH_TRAVERSAL_STATE_H_
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