简单绘制与Quartz - 核心图形

问题描述

我想画一个矩形，左上角有3个子空间。类似这样的：

  _______ 
 | _ | _____ | 
 | | 
 | _______ | 
  

但是由于某种原因，我无法得到内部的两条线。

   - （void）drawRect：（CGRect）rect {
 CGContextRef context = UIGraphicsGetCurrentContext 
 float cornerRadius = 25.0; 
 float w = self.bounds.size.width; 
 float h = self.bounds.size.height; 
 CGContextMoveToPoint（context，cornerRadius，0）; 
 CGContextAddQuadCurveToPoint（context，0，0，0，cornerRadius）; 
 CGContextAddLineToPoint（context，0，h）; 
 CGContextAddLineToPoint（context，w，h）; 
 CGContextAddLineToPoint（context，w，0）; 
 CGContextAddLineToPoint（context，cornerRadius，0）; 
 
 //绘图设置
 CGContextSetLineWidth（context，0.5）; 
 CGContextSetStrokeColorWithColor（context，[UIColor blackColor] .CGColor）; 
 CGContextSetFillColorWithColor（context，[UIColor white] .CGColor）; 
 
 //绘制矩形
 CGContextDrawPath（context，kCGPathFillStroke）; 
 
 //绘制标题/标签分区
 CGContextMoveToPoint（context，TITLE_HEIGHT，0）; 
 CGContextAddLineToPoint（context，TITLE_HEIGHT，TITLE_HEIGHT）; 
 CGContextStrokePath（context）; 
 
 //绘制标题/内容分区
 CGContextMoveToPoint（context，0，TITLE_HEIGHT）; 
 CGContextAddLineToPoint（context，self.bounds.size.width，TITLE_HEIGHT）; 
 CGContextStrokePath（context）; 
} 
  

我不知道我在这里犯错了...;

提前感谢

解决方案

尝试注释掉CGContextSetFillColorWithColor行一段时间 - 也许矩形重叠这些线？

I want to draw a rectangle with the top-left corner rounded with 3 sub-spaces in it. Something like this:

 _______
|_|_____|
|       |
|_______|

But for some reason I cannot get the inner two lines drawn.

- (void) drawRect:(CGRect)rect{
CGContextRef context = UIGraphicsGetCurrentContext();
float cornerRadius = 25.0;
float w = self.bounds.size.width;
float h = self.bounds.size.height;
CGContextMoveToPoint(context, cornerRadius, 0);
CGContextAddQuadCurveToPoint(context, 0, 0, 0, cornerRadius);
CGContextAddLineToPoint(context, 0, h);
CGContextAddLineToPoint(context, w, h);
CGContextAddLineToPoint(context, w, 0);
CGContextAddLineToPoint(context, cornerRadius, 0);

//drawing settings
CGContextSetLineWidth(context, 0.5);
CGContextSetStrokeColorWithColor(context, [UIColor blackColor].CGColor);
CGContextSetFillColorWithColor(context, [UIColor white].CGColor);

//draw rectangle
CGContextDrawPath(context, kCGPathFillStroke);

//draw title/label partition
CGContextMoveToPoint(context, TITLE_HEIGHT, 0);
CGContextAddLineToPoint(context, TITLE_HEIGHT, TITLE_HEIGHT);
CGContextStrokePath(context);

//draw title/content partition
CGContextMoveToPoint(context, 0, TITLE_HEIGHT);
CGContextAddLineToPoint(context, self.bounds.size.width, TITLE_HEIGHT);
CGContextStrokePath(context);
}

I wonder what am I mistaking here... ;(

Thanks in advance

解决方案

Try to comment out the CGContextSetFillColorWithColor line for a while - maybe the rectangle is overlapping those lines?

这篇关于简单绘制与Quartz - 核心图形的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！