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Re: Getting actual size of NSImage in NSImageView?

On Tuesday, April 29, 2003, at 03:23 PM, email@hidden wrote:

I'm doing some dragging out of an NSImageView subclass, and I want the "dragImage" to be not the original image that is scaled down to fit inside the NSImageView, but a copy of the image that it the same size as what's displayed. (Otherwise, the original image, which is much bigger, pops up out of seemingly nowhere!)

I can ask the NSImageView for its size, and size the image to be that -- but that doesn't handle the proportions correctly, so the image is still not right.

Any suggestions for asking the NSImageView, or its NSImage, what size it is *currently* displaying at?


// CODE SNIPPET -- CLOSE, BUT NOT QUITE.

- dragImage
{
#warning -- not quite right.
NSSize viewSize = [self bounds].size;
NSImage *newImage = [[[self image] copy] autorelease];
[newImage setScalesWhenResized:YES];
[newImage setSize:viewSize];
return newImage;
}


In the "Cropped Image" sample, I worked around it like so:

@implementation NSImageCell (CroppingImageView)

- (NSRect) rectCoveredByImageInBounds:(NSRect) bounds
// This is a work-around to deal with the fact that NSImageCell won't tell me the rectangle *actually* covered by its image, but NSCell will.
{
return [super imageRectForBounds:bounds];
}

@end

John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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 >Getting actual size of NSImage in NSImageView? (From: email@hidden)



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