Re: How to draw whole NSImage inside custom rect in NSView
Re: How to draw whole NSImage inside custom rect in NSView
- Subject: Re: How to draw whole NSImage inside custom rect in NSView
- From: Alexander Shmelev <email@hidden>
- Date: Wed, 12 Nov 2008 01:40:51 +0300
Hi, Ken
Thank you for answer.
But simple color filling was first what I have tried.
When I add following code inside -(void)drawRect method, it fills
exactly maxScanArea:
[[NSColor whiteColor] set];
[NSBezierPath fillRect:maxScanArea];
But -(void)drawInRect:maxScanArea places picture outside maxScanArea.
My target is to implement NSImage preview window with drag-n-drop
selection frame, like Select Tool in Preview.app. May be such custom
control exists and I simply do not know about it. But until I find
something suitable I have to deal with drawInRect:... issue.
On 12.11.2008, at 1:28, Ken Ferry wrote:
Hi Alexander,
Your code will draw the image in maxScanArea. You should probably
look for a bug elsewhere.
I like to replace complex drawing with simple color fills when
debugging drawing location issues. At least it limits what could go
wrong.
-Ken
On Tue, Nov 11, 2008 at 2:17 PM, Alexander Shmelev
<email@hidden> wrote:
Hello
I have custom NSView, and want to draw whole NSImage inside some
custom
rectangular area of NSView.
I tried to use [NSImage drawInRect:...] but result does not fit
desired
rectangular area of NSView.
My code:
- (void) setPreviewWidth:(float)width height:(float)height
{
margin = width / 25;
maxScanArea = NSMakeRect(margin, margin, width, height);
canvasArea = NSMakeRect(0, 0, width + 2.0 * margin, height +
2.0 *
margin);
[self setBounds:canvasArea];
}
- (void) drawRect:(NSRect)rect
{
// Drawing image in preview
if (image) {
NSRect imageRect;
imageRect.origin = NSZeroPoint;
imageRect.size = [image size];
[image drawInRect:maxScanArea
fromRect:imageRect
operation:NSCompositeSourceOver
fraction:1];
// I want image to be drawn in maxScanArea rect, but
it is
drawn in [self bounds] rect.
}
}
Could you advise how can I draw exactly inside maxScanArea NSRect
in NSView?
BR, Alexander.
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