These don't seem to work. The origin is still way way way off
NSRect n1=[imageView convertRect:selection toView:nil];
NSPoint p1 = [window convertBaseToScreen:n1.origin];
Does any one know how to take a selected area within a view and translate it so
that it resizes itself and then adjusts it's origin.
Maybe I didn't explain well enough.
I have a 800X600 rectangle which contains an image capture of the full screen.
Within the 800X600 rectangle you can select a smaller area.
This smaller selection should then become the area of the actual full screen
that is captured.
Right now, nothing I do will allow me to capture the correct area. And although
my conversion creates a rectangle of the correct size.
Is this possibly a case where my coordinates are upside down?
And if this is the case, how to I apply a transform to flip the origin's x
coordinate?
I attempted an affine transform however it doesn't work the same in Mac as
iPhone so I'm clueless on how to use affine transform
On Jul 1, 2011, at 1:52 PM, Lee Ann Rucker wrote:
>
> On Jul 1, 2011, at 1:14 PM, Andy Lee wrote:
>
>> On Jul 1, 2011, at 2:43 PM, Development wrote:
>>> I have tried having the view itself use convertRectToBase passing the
>>> screen bounds.
>>
>> That method doesn't do what you think it does. The docs say pretty clearly
>> you should pass it a rect "in the receiver’s coordinate system". This is a
>> method of NSView, so the receiver is the view, and question is what is the
>> rect being converted to?
>>
>> I *partly* blame the docs and/or the method name, because it isn't clear
>> what "base" means in the method name. This has always bugged me. As far as I
>> can tell it means the window's coordinate system, so I don't know why they
>> didn't name the method "convertRectToWindow:".
>
>
> http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/6b989dcbb79e9ba/029eeb633c5287cc
>
> Quote:
> If you want to convert to/from the window's base coordinate system, use the
> original -convert[xx]:[to|from]View: and pass in a nil view.
>
> What those "base" calls do is a conversion to the "base" coordinate system
> which isn't the "window base" coordinate system. This will not get you the
> coordinates you want. Don't use them. (The "base" coordinate system has to
> do with resolution independence; go look it up.)
>
>
>>
>> Anyway, check out NSView's window method, and NSWindow's
>> convertBaseToScreen: method. See the docs for what these methods return.
>>
>> --Andy
>>
>>
>>> This creates a rectangle of the correct size but the origin is always, no
>>> matter what, 15,183.
>>> I'm totally lost here and don't even know what to search for now that my
>>> other attempts have failed.
>>> Could some one help me out?
>>> I'm hoping to find something with low overhead as clicks are a
>>> factor._______________________________________________
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