зеркало из https://github.com/mozilla/pjs.git
96 строки
3.0 KiB
C++
96 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is IBM Corporation code.
|
|
*
|
|
* The Initial Developer of the Original Code is IBM Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2007
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef GFX_PATH_H
|
|
#define GFX_PATH_H
|
|
|
|
#include "gfxTypes.h"
|
|
#include "nsISupportsImpl.h"
|
|
|
|
class gfxContext;
|
|
struct gfxPoint;
|
|
typedef struct cairo_path cairo_path_t;
|
|
|
|
/**
|
|
* Class representing a path. Can be created by copying the current path
|
|
* of a gfxContext.
|
|
*/
|
|
class THEBES_API gfxPath {
|
|
NS_INLINE_DECL_REFCOUNTING(gfxPath)
|
|
|
|
friend class gfxContext;
|
|
|
|
protected:
|
|
gfxPath(cairo_path_t* aPath);
|
|
|
|
public:
|
|
virtual ~gfxPath();
|
|
|
|
protected:
|
|
cairo_path_t* mPath;
|
|
};
|
|
|
|
/**
|
|
* Specialization of a path that only contains linear pieces. Can be created
|
|
* from the existing path of a gfxContext.
|
|
*/
|
|
class THEBES_API gfxFlattenedPath : public gfxPath {
|
|
friend class gfxContext;
|
|
|
|
protected:
|
|
gfxFlattenedPath(cairo_path_t* aPath);
|
|
|
|
public:
|
|
virtual ~gfxFlattenedPath();
|
|
|
|
/**
|
|
* Returns calculated total length of path
|
|
*/
|
|
gfxFloat GetLength();
|
|
|
|
/**
|
|
* Returns a point a certain distance along the path. Return is
|
|
* first or last point of the path if the requested length offset
|
|
* is outside the range for the path.
|
|
* @param aOffset offset inpath parameter space (x=length, y=normal offset)
|
|
* @param aAngle optional - output tangent
|
|
*/
|
|
gfxPoint FindPoint(gfxPoint aOffset,
|
|
gfxFloat* aAngle = nsnull);
|
|
};
|
|
|
|
#endif
|