RE: Adding text to NSImage using lockFocus/unlockFocus not working
RE: Adding text to NSImage using lockFocus/unlockFocus not working
- Subject: RE: Adding text to NSImage using lockFocus/unlockFocus not working
- From: "Ashish Tiwari" <email@hidden>
- Date: Wed, 25 Feb 2009 13:28:34 +0530
I am sorry for typo, actually only images are shown *without titles. I want
to see image as well as their title.
Mean while I added your imageAttributes in IKBrowserItem.m with no luck.
I put various NSLog and looked in console to find out that
imageTitle, imageSubtitle, imageAttributes are not getting called. Just
imageUID, imageRepresentation and imageRepresentationType methods are being
called.
Is this correct behavior.
Ashish
-----Original Message-----
From: Graham Cox
On 25/02/2009, at 4:04 PM, email@hidden wrote:
>
> Hi Graham,
>
> I tried what you have suggested still only images are shown with
> titles.
I'm not clear what the problem is - what did you expect to see?
> - (NSString*) imageSubtitle
> {
> NSDictionary* attribs = [image imageAttributes];
>
> int w, h;
>
> w = [[attribs objectForKey:@"PixelWidth"] intValue];
> h = [[attribs objectForKey:@"PixelHeight"] intValue];
>
> return [NSString stringWithFormat:@"%d x %d", w, h];
> }
This won't work - NSImage doesn't have a method called -
imageAttributes. In my code the attributes are retrieved using [self
imageAttributes], and that method looks like this:
- (NSDictionary*) imageAttributes
{
// returns the image's attributes dictionary using CGImageSource to
read the file's header. This is fast as the image
// itself isn't loaded.
NSURL* url = [NSURL fileURLWithPath:mPath];
CGImageSourceRef srcRef = CGImageSourceCreateWithURL((CFURLRef)
url,
NULL );
NSDictionary* imgProps = (NSDictionary*)
CGImageSourceCopyPropertiesAtIndex( srcRef, 0, NULL);
CFRelease(srcRef);
//NSLog(@"attributes for '%@': %@", mPath, imgProps );
return [imgProps autorelease];
}
I suspect your method is asserting when it's called due to the
unimplemented method and that is stopping the browser view working
properly. Check your console output.
--Graham
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