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2017-08-15 16:59:01 +08:00
commit bdc83e07ef
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+/*
+*  BMKOverlayPathView.h
+*  BMapKit
+*
+*  Copyright 2011 Baidu Inc. All rights reserved.
+*
+*/
+
+#import <UIKit/UIKit.h>
+#import "BMKOverlayView.h"
+
+/// 该类定义了一个基本的OverlayView
+@interface BMKOverlayPathView : BMKOverlayView {
+@package    
+    UIColor *_fillColor;
+    UIColor *_strokeColor;
+    
+    CGFloat _lineWidth;
+    CGLineJoin _lineJoin;
+    CGLineCap _lineCap;
+    CGFloat _miterLimit;
+    CGFloat _lineDashPhase;
+    NSArray *_lineDashPattern;
+    
+    CGPathRef _path;
+}
+
+/// 填充颜色
+@property (strong) UIColor *fillColor;
+/// 画笔颜色
+@property (strong) UIColor *strokeColor;
+
+/// 画笔宽度，默认为0
+@property CGFloat lineWidth;
+/// LineJoin，默认为kCGLineJoinRound
+@property CGLineJoin lineJoin;
+/// LineCap，默认为kCGLineCapRound
+@property CGLineCap lineCap;
+/// miterLimit,在样式为kCGLineJoinMiter时有效，默认为10
+@property CGFloat miterLimit;
+/// lineDashPhase, 默认为0
+@property CGFloat lineDashPhase;
+/// lineDashPattern,一个NSNumbers的数组，默认为nil
+@property (copy) NSArray *lineDashPattern;
+
+/**
+ *生成要绘制的path，子类需要重写此函数，并且对path属性赋值：self.path = newPath;
+ */
+- (void)createPath;
+/// path对象
+@property CGPathRef path;
+
+/**
+ *刷新path，调用该函数将会使已经缓存的path失效，将会重新调用createPath来生成新的path对象
+ */
+- (void)invalidatePath;
+
+
+/**
+ *应用画笔属性
+ *@param context CGContext对象
+ *@param zoomScale 当前的zoomScale
+ */
+- (void)applyStrokePropertiesToContext:(CGContextRef)context
+                           atZoomScale:(BMKZoomScale)zoomScale;
+
+/**
+ *应用画刷属性
+ *@param context CGContext对象
+ *@param zoomScale 当前的zoomScale
+ */
+- (void)applyFillPropertiesToContext:(CGContextRef)context
+                         atZoomScale:(BMKZoomScale)zoomScale;
+/**
+ *绘制path
+ *@param path 要绘制的CGPath
+ *@param context CGContext对象
+ */
+- (void)strokePath:(CGPathRef)path inContext:(CGContextRef)context;
+
+/**
+ *填充path
+ *@param path 要绘制的CGPath
+ *@param context CGContext对象
+ */
+- (void)fillPath:(CGPathRef)path inContext:(CGContextRef)context;
+
+@end