/*

     ImageAndTextCell.m

     Copyright (c) 2001-2006, Apple Computer, Inc., all rights reserved.

     Author: Chuck Pisula

     Milestones:

     * 03-01-2001: Initial creation by Chuck Pisula

     * 11-04-2005: Added hitTestForEvent:inRect:ofView: for better NSOutlineView support by Corbin Dunn

     Subclass of NSTextFieldCell which can display text and an image simultaneously.

 */

 /*

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 */

 #import "ImageAndTextCell.h"

 #import <AppKit/NSCell.h>

 @implementation ImageAndTextCell

 - (id)init {

     self = [super init];

     if( self ) {

         [self setLineBreakMode:NSLineBreakByTruncatingTail];

         [self setSelectable:YES];

     }

     return self;

 }

 - (void)dealloc {

     [image release];

     [super dealloc];

 }

 - (id)copyWithZone:(NSZone *)zone {

     ImageAndTextCell *cell = (ImageAndTextCell *)[super copyWithZone:zone];

     // The image ivar will be directly copied; we need to retain or copy it.

     cell->image = [image retain];

     return cell;

 }

 - (void)setImage:(NSImage *)anImage {

     if (anImage != image) {

         [image release];

         image = [anImage retain];

     }

 }

 - (NSImage *)image {

     return image;

 }

 - (NSRect)imageRectForBounds:(NSRect)cellFrame {

     NSRect result;

     if (image != nil) {

         result.size = [image size];

         result.origin = cellFrame.origin;

         result.origin.x += 3;

         result.origin.y += ceil((cellFrame.size.height - result.size.height) / 2);

     } else {

         result = NSZeroRect;

     }

     return result;

 }

 // We could manually implement expansionFrameWithFrame:inView: and drawWithExpansionFrame:inView: or just properly implement titleRectForBounds to get expansion tooltips to automatically work for us

 - (NSRect)titleRectForBounds:(NSRect)cellFrame {

     NSRect result;

     if (image != nil) {

         CGFloat imageWidth = [image size].width;

         result = cellFrame;

         result.origin.x += (3 + imageWidth);

         result.size.width -= (3 + imageWidth);

     } else {

         result = NSZeroRect;

     }

     return result;

 }

 - (void)editWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject event:(NSEvent *)theEvent {

     NSRect textFrame, imageFrame;

     NSDivideRect (aRect, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);

     [super editWithFrame: textFrame inView: controlView editor:textObj delegate:anObject event: theEvent];

 }

 - (void)selectWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject start:(NSInteger)selStart length:(NSInteger)selLength {

     NSRect textFrame, imageFrame;

     NSDivideRect (aRect, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);

     [super selectWithFrame: textFrame inView: controlView editor:textObj delegate:anObject start:selStart length:selLength];

 }

 - (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {

     if (image != nil) {

         NSRect	imageFrame;

         NSSize imageSize = [image size];

         NSDivideRect(cellFrame, &imageFrame, &cellFrame, 3 + imageSize.width, NSMinXEdge);

         if ([self drawsBackground]) {

             [[self backgroundColor] set];

             NSRectFill(imageFrame);

         }

         imageFrame.origin.x += 3;

         imageFrame.size = imageSize;

         if ([controlView isFlipped])

             imageFrame.origin.y += ceil((cellFrame.size.height + imageFrame.size.height) / 2);

         else

             imageFrame.origin.y += ceil((cellFrame.size.height - imageFrame.size.height) / 2);

         [image compositeToPoint:imageFrame.origin operation:NSCompositeSourceOver];

     }

     [super drawWithFrame:cellFrame inView:controlView];

 }

 - (NSSize)cellSize {

     NSSize cellSize = [super cellSize];

     cellSize.width += (image ? [image size].width : 0) + 3;

     return cellSize;

 }

 - (NSUInteger)hitTestForEvent:(NSEvent *)event inRect:(NSRect)cellFrame ofView:(NSView *)controlView {

     NSPoint point = [controlView convertPoint:[event locationInWindow] fromView:nil];

     // If we have an image, we need to see if the user clicked on the image portion.

     if (image != nil) {

         // This code closely mimics drawWithFrame:inView:

         NSSize imageSize = [image size];

         NSRect imageFrame;

         NSDivideRect(cellFrame, &imageFrame, &cellFrame, 3 + imageSize.width, NSMinXEdge);

         imageFrame.origin.x += 3;

         imageFrame.size = imageSize;

         // If the point is in the image rect, then it is a content hit

         if (NSMouseInRect(point, imageFrame, [controlView isFlipped])) {

             // We consider this just a content area. It is not trackable, nor it it editable text. If it was, we would or in the additional items.

             // By returning the correct parts, we allow NSTableView to correctly begin an edit when the text portion is clicked on.

             return NSCellHitContentArea;

         }        

     }

     // At this point, the cellFrame has been modified to exclude the portion for the image. Let the superclass handle the hit testing at this point.

     return [super hitTestForEvent:event inRect:cellFrame ofView:controlView];    

 }

 @end