/*

    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