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/*

     File: ImageAndTextCell.m 

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

  Version: 1.1 

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 */

#import "ImageAndTextCell.h"

//#import "BaseNode.h"

@implementation ImageAndTextCell

#define kIconImageSize		16.0

#define kImageOriginXOffset 3

#define kImageOriginYOffset 1

#define kTextOriginXOffset	2

#define kTextOriginYOffset	2

#define kTextHeightAdjust	4

// -------------------------------------------------------------------------------

//	init:

// -------------------------------------------------------------------------------

- (id)init

{

	self = [super init];

	// we want a smaller font

	[self setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]];

	return self;

}

// -------------------------------------------------------------------------------

//	dealloc:

// -------------------------------------------------------------------------------

- (void)dealloc

{

    [image release];

    image = nil;

    [super dealloc];

}

// -------------------------------------------------------------------------------

//	copyWithZone:zone

// -------------------------------------------------------------------------------

- (id)copyWithZone:(NSZone*)zone

{

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

    cell->image = [image retain];

    return cell;

}

// -------------------------------------------------------------------------------

//	setImage:anImage

// -------------------------------------------------------------------------------

- (void)setImage:(NSImage*)anImage

{

    if (anImage != image)

	{

        [image release];

        image = [anImage retain];

		[image setSize:NSMakeSize(kIconImageSize, kIconImageSize)];

    }

}

// -------------------------------------------------------------------------------

//	image:

// -------------------------------------------------------------------------------

- (NSImage*)image

{

    return image;

}

// -------------------------------------------------------------------------------

//	isGroupCell:

// -------------------------------------------------------------------------------

- (BOOL)isGroupCell

{

    return ([self image] == nil && [[self title] length] > 0);

}

// -------------------------------------------------------------------------------

//	titleRectForBounds:cellRect

//

//	Returns the proper bound for the cell's title while being edited

// -------------------------------------------------------------------------------

- (NSRect)titleRectForBounds:(NSRect)cellRect

{	

	// the cell has an image: draw the normal item cell

	NSSize imageSize;

	NSRect imageFrame;

	imageSize = [image size];

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

	imageFrame.origin.x += kImageOriginXOffset;

	imageFrame.origin.y -= kImageOriginYOffset;

	imageFrame.size = imageSize;

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

	NSRect newFrame = cellRect;

	newFrame.origin.x += kTextOriginXOffset;

	newFrame.origin.y += kTextOriginYOffset;

	newFrame.size.height -= kTextHeightAdjust;

	return newFrame;

}

// -------------------------------------------------------------------------------

//	editWithFrame:inView:editor:delegate:event

// -------------------------------------------------------------------------------

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

{

	NSRect textFrame = [self titleRectForBounds:aRect];

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

}

// -------------------------------------------------------------------------------

//	selectWithFrame:inView:editor:delegate:event:start:length

// -------------------------------------------------------------------------------

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

{

	NSRect textFrame = [self titleRectForBounds:aRect];

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

}

// -------------------------------------------------------------------------------

//	drawWithFrame:cellFrame:controlView:

// -------------------------------------------------------------------------------

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

{

	if (image != nil)

	{

		// the cell has an image: draw the normal item cell

		NSSize imageSize;

        NSRect imageFrame;

        imageSize = [image size];

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

        imageFrame.origin.x += kImageOriginXOffset;

		imageFrame.origin.y -= kImageOriginYOffset;

        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];

		NSRect newFrame = cellFrame;

		newFrame.origin.x += kTextOriginXOffset;

		newFrame.origin.y += kTextOriginYOffset;

		newFrame.size.height -= kTextHeightAdjust;

		[super drawWithFrame:newFrame inView:controlView];

    }

	else

	{

		if ([self isGroupCell])

		{

			// Center the text in the cellFrame, and call super to do thew ork of actually drawing. 

			CGFloat yOffset = floor((NSHeight(cellFrame) - [[self attributedStringValue] size].height) / 2.0);

			cellFrame.origin.y += yOffset;

			cellFrame.size.height -= (kTextOriginYOffset*yOffset);

			[super drawWithFrame:cellFrame inView:controlView];

		}

	}

}

// -------------------------------------------------------------------------------

//	cellSize:

// -------------------------------------------------------------------------------

- (NSSize)cellSize

{

    NSSize cellSize = [super cellSize];

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

    return cellSize;

}

// -------------------------------------------------------------------------------

//	hitTestForEvent:

//

//	In 10.5, we need you to implement this method for blocking drag and drop of a given cell.

//	So NSCell hit testing will determine if a row can be dragged or not.

//

//	NSTableView calls this cell method when starting a drag, if the hit cell returns

//	NSCellHitTrackableArea, the particular row will be tracked instead of dragged.

//

// -------------------------------------------------------------------------------

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

//{

//	NSInteger result = NSCellHitContentArea;

//	

//	NSOutlineView* hostingOutlineView = (NSOutlineView*)[self controlView];

//	if (hostingOutlineView)

//	{

//		NSInteger selectedRow = [hostingOutlineView selectedRow];

//		BaseNode* node = [[hostingOutlineView itemAtRow:selectedRow] representedObject];

//

//		if (![node isDraggable])	// is the node isDraggable (i.e. non-file system based objects)

//			result = NSCellHitTrackableArea;

//	}

//		

//	return result;

//}

@end