气泡状view

来源：互联网发布：java方法怎么定义泛型编辑：程序博客网时间：2024/06/11 16:26

//-(CGPathRef)createPathWithArrowDirection:(MessageViewArrowDirection)direction AndRelativeOrigin:(CGPoint)reletiveOrigin
-(CGPathRef)createPath
{

    CGMutablePathRef path = CGPathCreateMutable();
    CGRect rect=CGRectInset(self.bounds, 10, 20);
    CGFloat minx = CGRectGetMinX(rect), midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect);
    CGFloat miny = CGRectGetMinY(rect), midy = CGRectGetMidY(rect), maxy = CGRectGetMaxY(rect);
    CGFloat radius=10.0;
    CGPathMoveToPoint(path, NULL, minx, midy);
    CGPathAddArcToPoint(path, NULL, minx, miny, midx, miny, radius);
    CGPathAddLineToPoint(path, NULL, midx-10, miny);
    CGPathAddLineToPoint(path, NULL, midx+ARROW_WIDTH/2.0+10, 0);
    CGPathAddLineToPoint(path, NULL, midx+ARROW_WIDTH, miny);
    CGPathAddArcToPoint(path, NULL, maxx, miny, maxx, midy, radius);
    CGPathAddArcToPoint(path, NULL, maxx, maxy, midx, maxy, radius);
    CGPathAddArcToPoint(path, NULL, minx, maxy, minx, midy, radius);
    CGPathCloseSubpath(path);
    return path;
}
- (void)drawRect:(CGRect)rect
{
    [super drawRect:rect];
    //inner color
    CGFloat R=0.0,G=0.0,B=0.0,A= 0.0;
    CGColorRef color = _innerColor.CGColor;
    int numComponents = CGColorGetNumberOfComponents(color);
    if (numComponents==4)
    {
        const CGFloat *components = CGColorGetComponents(color);
        R = components[0];
        G = components[1];
        B = components[2];
        A = components[3];
    }
    CGContextRef context=UIGraphicsGetCurrentContext();
    CGContextAddPath(context, [self createPath]);
    CGContextSetRGBFillColor(context, R, G, B, A);
    CGContextFillPath(context);

    //outer color
    CGContextBeginPath(context);
     color = _outerColor.CGColor;
     numComponents = CGColorGetNumberOfComponents(color);
    if (numComponents==4)
    {
        const CGFloat *components = CGColorGetComponents(color);
        R = components[0];
        G = components[1];
        B = components[2];
        A = components[3];
    }
    context=UIGraphicsGetCurrentContext();
    CGContextAddPath(context, [self createPath]);
    CGContextSetRGBStrokeColor(context, R, G, B, A);
    CGContextSetLineWidth(context, _outerWidth);
    CGContextStrokePath(context);

}