src/views/ContextualTableCellView.mm

/*
 *  Copyright (C) 2015-2016 Savoir-faire Linux Inc.
 *  Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
 */

#import "ContextualTableCellView.h"

@interface NSView (extension)
@property NSVisualEffectView* vibrantView;
@end;

@interface ContextualTableCellView()

@property NSTrackingArea *trackingArea;

@end

@implementation ContextualTableCellView

- (void)updateTrackingAreas {
    [super updateTrackingAreas];
    [self ensureTrackingArea];
    if (![[self trackingAreas] containsObject:_trackingArea]) {
        [self addTrackingArea:_trackingArea];
    }
}

- (void)ensureTrackingArea {
    if (_trackingArea == nil) {
        _trackingArea = [[NSTrackingArea alloc] initWithRect:NSZeroRect
                                                    options:NSTrackingInVisibleRect
                        | NSTrackingActiveAlways
                        | NSTrackingMouseEnteredAndExited owner:self userInfo:nil];
    }
}

- (void)prepareForReuse
{
    if (self.isMouseOver) {
        return;
    }

    for (NSView* item in self.contextualsControls) {
        [item setHidden:YES];
        if(self.shouldBlurParentView && [item respondsToSelector:@selector(vibrantView)] && item.vibrantView)
            [item.vibrantView setHidden:YES];
    }
}

- (void)mouseEntered:(NSEvent *)theEvent
{
    self.isMouseOver = true;

    if (self.activeState)
        return;

    for (NSView* item in self.contextualsControls) {
        [item setHidden:NO];
        if(!self.shouldBlurParentView)
        {
            break;
        }
        if([item respondsToSelector:@selector(vibrantView)] && !item.vibrantView) {
            NSRect frame = CGRectMake(item.frame.origin.x - 20 , item.frame.origin.y - 50, item.frame.size.width + 53, item.frame.size.height + 100);
            NSVisualEffectView *vibrantView = [[NSVisualEffectView alloc]
                                               initWithFrame:frame];
            vibrantView.appearance = [NSAppearance
                                      appearanceNamed:NSAppearanceNameVibrantLight];
            vibrantView.material = NSVisualEffectMaterialAppearanceBased;
            vibrantView.blendingMode = NSVisualEffectBlendingModeWithinWindow;
            [vibrantView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
            vibrantView.alphaValue = 0.7;
            if([item respondsToSelector:@selector(setVibrantView:)]) {
                item.vibrantView = vibrantView;
            }
            [self addSubview: item.vibrantView];
            [self addSubview:item];

        }
        if([item respondsToSelector:@selector(vibrantView)] && item.vibrantView) {
            [item.vibrantView setHidden:NO];
        }
    }
}

- (void)mouseExited:(NSEvent *)theEvent
{
    self.isMouseOver = false;

    for (NSView* item in self.contextualsControls) {
        [item setHidden:YES];
        if(self.shouldBlurParentView && [item respondsToSelector:@selector(vibrantView)] && item.vibrantView) {
            [item.vibrantView setHidden:YES];
        }
    }
}

@end