-
as seen on Stack Overflow
- Search for 'Stack Overflow'
I have a CGBitmapContext (bitmapContext) and I would like to draw some rectangle part (rect) of it to the current CGContext (context).
Right now I do that way:
CGContextRef context = UIGraphicsGetCurrentContext();
CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext);
CGContextClipToRect(context…
>>> More
-
as seen on Stack Overflow
- Search for 'Stack Overflow'
Hi,
I am using the framework of route-me for working with locations.
In this code the path between two markers(points) will be drawn as a line.
My Question: "What code should I add if I want to add an arrow in the middle(or top) of the line, so that it points the direction"
Thanks
- (void)drawInContext:(CGContextRef)theContext
{
…
>>> More
-
as seen on Stack Overflow
- Search for 'Stack Overflow'
I know that the CGContext cannot call it to draw directly, and it needs to fill the drawing logic in the drawInContext, and call the CGContext to draw using "setNeedsDisplay", so, I designed a cmd to execute, but it cause some problems... like this :
http://stackoverflow.com/questions/2617827/why-i-cant-draw-in-a-loop-using-uiview-in-iphone
I…
>>> More
-
as seen on Stack Overflow
- Search for 'Stack Overflow'
Hi All
I am showing PDF content on a view
using this code using Quartz Sample
// PDF page drawing expects a Lower-Left coordinate system, so we flip the coordinate system
// before we start drawing.
CGContextTranslateCTM(context, 0.0, self.bounds.size.height);
CGContextScaleCTM(context, 1.0…
>>> More
-
as seen on Stack Overflow
- Search for 'Stack Overflow'
I'm overriding the drawRect: method in a custom UIView, and I'm doing some custom drawing. All was going well, until I needed to draw a PDF resource (a vector glyph, to be precise) into the context. First I retrieve the PDF from a file:
NSURL *pdfURL = [NSURL fileURLWithPath:[[[NSBundle mainBundle]…
>>> More
