/*

 Copyright (C) 2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 A cell that can draw an image/icon and a label color.

 */

#import "FileSystemBrowserCell.h"

#define ICON_SIZE           16.0    // Our Icons are ICON_SIZE x ICON_SIZE

#define ICON_INSET_HORIZ    4.0     // Distance to inset the icon from the left edge.

#define ICON_TEXT_SPACING   2.0     // Distance between the end of the icon and the text part

#define ICON_INSET_VERT     2.0     // Distance from top/bottom of icon

@implementation FileSystemBrowserCell

@synthesize image = _image;

@synthesize labelColor = _labelColor;

- (instancetype)init {

    self = [super init];

    if (self != nil) {

        self.lineBreakMode = NSLineBreakByTruncatingTail;

    }

    return self;

}

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

    FileSystemBrowserCell *result = [super copyWithZone:zone];

    result.image = self.image;

    result.labelColor = self.labelColor;

    return result;

}

- (NSRect)imageRectForBounds:(NSRect)bounds {

    bounds.origin.x += ICON_INSET_HORIZ;

    bounds.size.width = ICON_SIZE;

    bounds.origin.y += trunc((bounds.size.height - ICON_SIZE) / 2.0); 

    bounds.size.height = ICON_SIZE;

    return bounds;

}

- (NSRect)titleRectForBounds:(NSRect)bounds {

    // Inset the title for the image

    CGFloat inset = (ICON_INSET_HORIZ + ICON_SIZE + ICON_TEXT_SPACING);

    bounds.origin.x += inset;

    bounds.size.width -= inset;

    return [super titleRectForBounds:bounds];

}

- (NSSize)cellSizeForBounds:(NSRect)aRect {

    // Make our cells a bit higher than normal to give some additional space for the icon to fit.

    NSSize theSize = [super cellSizeForBounds:aRect];

    theSize.width += (ICON_INSET_HORIZ + ICON_SIZE + ICON_TEXT_SPACING);

    theSize.height = ICON_INSET_VERT + ICON_SIZE + ICON_INSET_VERT;

    return theSize;

}

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

    // First draw a label background color

    if (self.labelColor != nil) {

        [[self.labelColor colorWithAlphaComponent:0.2] set];

        NSRectFillUsingOperation(cellFrame, NSCompositeSourceOver);

    }

    NSRect imageRect = [self imageRectForBounds:cellFrame];

    if (self.image != nil) {

        [self.image drawInRect:imageRect

                        fromRect:NSZeroRect

                       operation:NSCompositeSourceOver

                        fraction:1.0

                  respectFlipped:YES

                           hints:nil];

    }

    CGFloat inset = (ICON_INSET_HORIZ + ICON_SIZE + ICON_TEXT_SPACING);

    cellFrame.origin.x += inset;

    cellFrame.size.width -= inset;

    cellFrame.origin.y += 1; // Looks better

    cellFrame.size.height -= 1;

    [super drawInteriorWithFrame:cellFrame inView:controlView];

}

- (void)drawWithExpansionFrame:(NSRect)cellFrame inView:(NSView *)view {

    // We want to exclude the icon from the expansion frame when you hover over the cell

    [super drawInteriorWithFrame:cellFrame inView:view];

}

@end