Re: help for NSMatrix -> action cell

FROM : Ricky Sharp
DATE : Tue Nov 13 22:37:53 2007

On Nov 13, 2007, at 12:02 AM, shengjun_guan (ºÞÁn«T) wrote:

> I create one image browser application use NSMatrix .
> I show the file's image and file's name inside the Cell. Of course i 
> make the Class: myCell which base from NSCell .And overwrite the 
> NSCell's method: drawWithFrame: inView:  to show the image in up 
> content ,and text in down content .
>
> ---FOLLOW IS THE CODE of drawWithFrame: inView: IN MY CELL CLASS-----
> - (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
> {
>     if ((title != nil) || (image != nil))
>     {
>         NSRect    imageFrame,textFrame, tempFrame;
>         NSDivideRect(cellFrame, &imageFrame, &textFrame, 
> cellFrame.size.height - 15, NSMinYEdge);
>                 
>         [image setFlipped:YES];
>         [image drawInRect:imageFrame fromRect:NSMakeRect(0,0,[image 
> size].width,[image size].height) operation:NSCompositeSourceOver 
> fraction:1.0];
>         
>         if ((cellFrame.size.width - [[title string] length] * 4) / 2 >= 0)
>         {
>             textFrame.origin.x += (cellFrame.size.width - [title length] * 
> 4) / 2;
>         }
>         textFrame.origin.y += 25;
>         [title drawInRect:textFrame];
>     }
>         
>     [super drawWithFrame:cellFrame inView:controlView];
> }
>
> And , i have realizied that open the image file with Preview when 
> double click the Cell.
> Now, i want to realizied to rename. When click the down content of 
> the Cell, like the TextFied, user can input the
> new Text. How can i do.  need I use NSView to replace NSMatrix ?


You can definitely keep using a cell.  Check out Apple's sample:

/Examples/AppKit/DragNDropOutlineView/

Specifically, look at the class ImageAndTextCell.

When you run the application, you can double-click on the text next to 
an icon to edit it.  This is achieved by implementing 
editWithFrame:inView:editor:delegate:event:.  I believe you also want 
to implement selectWithFrame:inView:editor:delegate:start:length:. 
That class shows examples of both methods.

___________________________________________________________
Ricky A. Sharp        mailto:<email_removed>
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