rectangle « graphics « iPhone iPad Media Q&A

1. Beginner iphone question: drawing a rectangle. What am I doing wrong?    stackoverflow.com

Trying to figure out what I'm doing wrong here. Have tried several things, but I never see that elusive rectangle on the screen. Right now, that's all I want ...

2. How can I get only a partial rectangle from a CALayer?    stackoverflow.com

I'm getting a "snapshot" of an UITextView as CGImage, but the problem is that the content of the UITextView is very long ( about ~110k contentSize.height ) and when I render ...

3. setNeedsDisplayInRect: paints a white rectangle only    stackoverflow.com

I'm still a little fresh to CoreGraphics programming, so please bear with me. I'm trying to write an application, which allows the user to rub stuff off an image with the ...

4. Draw rectangle using Core Graphics with live preview    stackoverflow.com

I'm creating a simple drawing application and would like some help with drawing rectangles based on the user's touch events. I'm able to draw a rectangle using Core Graphics from the ...

5. Coloring of a rectangle    stackoverflow.com

I'm a newbie to Graphics.I'm drawing a rectangle which will change its color after one second.

- (void)drawRect:(CGRect)rect {
    [self setWidthHeightOfRectangle];
    [self changeColorOfNumbers];
    ...

6. Create perspective of rectangles lying on a flat surface    stackoverflow.com

I have been working in objective-c for a while now, but I haven't really had a need (until now) to dive deeper into core animation and graphic manipulation. I currently have four ...

7. how to write formatted text in a rectangle using quartz framework in iphone    stackoverflow.com

I m a newbie in iphone. Currently m doing a project to create a pdf having tables. I created that. I can even write the text in table cells. But now ...

8. CGContextFillRect not drawing a rectangle?    stackoverflow.com

I have this code:

CGColorRef darkColor = [[UIColor colorWithRed:21.0/255.0 green:92.0/255.0 blue:136.0/255.0 alpha:1.0] CGColor];
CGContextRef context = UIGraphicsGetCurrentContext(); 
CGContextSetFillColorWithColor(context, darkColor);
CGContextFillRect(context, CGRectMake(18, 62, 66, 66));

9. How to draw 2 different colored rectangles in iphone using 2d graphics    stackoverflow.com

I have used the following code for drawing 2 rectangles

- (void)drawRect:(CGRect)rect {

    CGContextRef context = UIGraphicsGetCurrentContext();   
    CGContextBeginPath(context);
    CGContextSetLineWidth(context, 2.0);
 ...