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/*
* CPBezierPath.j
*
* Created by Ross Boucher.
* Copyright 2009, 280 North, Inc.
*
* Adapted from Kevin Wojniak, portions Copyright 2009 Kevin Wojniak.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* Copyright 2009 280 North, Inc.
*/
@import <Foundation/CPObject.j>
@import "CPGraphicsContext.j"
// Class defaults
var DefaultLineWidth = 1.0;
/*!
@ingroup appkit
@class CPBezierPath
A CPBezierPath allows you to create paths for drawing to the screen using a simpler API than CoreGraphics.
Paths can form any shape, including regular polygons like squares and triangles; circles, arcs; or complex
line segments.
A path can be stroked and filled using the relevant method. The currently active fill and stroke color will
be used, which can be set by calling setFill: and setStroke: on any CPColor object (or set: for both).
*/
@implementation CPBezierPath : CPObject
{
CGPath _path;
float _lineWidth;
}
/*!
Create a new CPBezierPath object.
*/
+ (CPBezierPath)bezierPath
{
return [[self alloc] init];
}
/*!
Create a new CPBezierPath object initialized with an oval path drawn within a rectangular path.
*/
+ (CPBezierPath)bezierPathWithOvalInRect:(CGRect)rect
{
var path = [self bezierPath];
[path appendBezierPathWithOvalInRect:rect];
return path;
}
/*!
Create a new CPBezierPath object initialized with a rectangular path.
*/
+ (CPBezierPath)bezierPathWithRect:(CGRect)rect
{
var path = [self bezierPath];
[path appendBezierPathWithRect:rect];
return path;
}
/*!
Get default line width.
*/
+ (float)defaultLineWidth
{
return DefaultLineWidth;
}
/*!
Set default line width.
*/
+ (void)setDefaultLineWidth:(float)width
{
DefaultLineWidth = width;
}
/*!
Fill rectangular path with current fill color.
*/
+ (void)fillRect:(CGRect)aRect
{
[[self bezierPathWithRect:aRect] fill];
}
/*!
Using the current stroke color and default drawing attributes, strokes a counterclockwise path beginning at the rectangle's origin.
*/
+ (void)strokeRect:(CGRect)aRect
{
[[self bezierPathWithRect:aRect] stroke];
}
/*!
Using the current stroke color and default drawing attributes, strokes a line between two points.
*/
+ (void)strokeLineFromPoint:(CGPoint)point1 toPoint:(CGPoint)point2
{
var path = [self bezierPath];
[path moveToPoint:point1];
[path lineToPoint:point2];
[path stroke];
}
/*!
Create a new CPBezierPath object using the default line width.
*/
- (id)init
{
if (self = [super init])
{
_path = CGPathCreateMutable();
_lineWidth = [[self class] defaultLineWidth];
}
return self;
}
/*!
Moves the current point to another location.
*/
- (void)moveToPoint:(CGPoint)point
{
CGPathMoveToPoint(_path, nil, point.x, point.y);
}
/*!
Append a straight line to the path.
*/
- (void)lineToPoint:(CGPoint)point
{
CGPathAddLineToPoint(_path, nil, point.x, point.y);
}
/*!
Add a cubic Bezier curve to the path.
*/
- (void)curveToPoint:(CGPoint)endPoint controlPoint1:(CGPoint)controlPoint1 controlPoint2:(CGPoint)controlPoint2
{
CGPathAddCurveToPoint(_path, nil, controlPoint1.x, controlPoint1.y, controlPoint2.x, controlPoint2.y, endPoint.x, endPoint.y);
}
/*!
Create a line segment between the first and last points in the subpath, closing it.
*/
- (void)closePath
{
CGPathCloseSubpath(_path);
}
/*!
Draw a line along the path with the current stroke color and default drawing attributes.
*/
- (void)stroke
{
var ctx = [[CPGraphicsContext currentContext] graphicsPort];
CGContextBeginPath(ctx);
CGContextAddPath(ctx, _path);
CGContextSetLineWidth(ctx, [self lineWidth]);
CGContextStrokePath(ctx);
}
/*!
Fill the path with the current fill color.
*/
- (void)fill
{
var ctx = [[CPGraphicsContext currentContext] graphicsPort];
CGContextBeginPath(ctx);
CGContextAddPath(ctx, _path);
CGContextSetLineWidth(ctx, [self lineWidth]);
CGContextClosePath(ctx);
CGContextFillPath(ctx);
}
/*!
Get the line width.
*/
- (float)lineWidth
{
return _lineWidth;
}
/*!
Set the line width.
*/
- (void)setLineWidth:(float)lineWidth
{
_lineWidth = lineWidth;
}
/*!
Get the total number of elements.
*/
- (unsigned)elementCount
{
return _path.count;
}
/*!
Check if receiver is empty, returns appropriate Boolean value.
*/
- (BOOL)isEmpty
{
return CGPathIsEmpty(_path);
}
/*!
Get the current point.
*/
- (CGPoint)currentPoint
{
return CGPathGetCurrentPoint(_path);
}
/*!
Append a series of line segments.
*/
- (void)appendBezierPathWithPoints:(CPArray)points count:(unsigned)count
{
CGPathAddLines(_path, nil, points, count);
}
/*!
Append a rectangular path.
*/
- (void)appendBezierPathWithRect:(CGRect)rect
{
CGPathAddRect(_path, nil, rect);
}
/*!
Append an oval path; oval is drawn within the rectangular path.
*/
- (void)appendBezierPathWithOvalInRect:(CGRect)rect
{
CGPathAddPath(_path, nil, CGPathWithEllipseInRect(rect));
}
/*!
Append a rounded rectangular path.
*/
- (void)appendBezierPathWithRoundedRect:(CGRect)rect xRadius:(float)xRadius yRadius:(float)yRadius
{
CGPathAddPath(_path, nil, CGPathWithRoundedRectangleInRect(rect, xRadius, yRadius, YES, YES, YES, YES));
}
/*!
Append the contents of a CPBezierPath object.
*/
- (void)appendBezierPath:(CPBezierPath)other
{
CGPathAddPath(_path, nil, other._path);
}
/*!
Remove all path elements; clears path.
*/
- (void)removeAllPoints
{
_path = CGPathCreateMutable();
}
@end
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