PDP-8-E-Simulator/KC8EA/ConsoleSwitchCell.m

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/*
* PDP-8/E Simulator
*
* Copyright © 1994-2015 Bernhard Baehr
*
* ConsoleSwitchCell.h - NSButtonCell subclass for the console switches
*
* This file is part of PDP-8/E Simulator.
*
* PDP-8/E Simulator 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, see <http://www.gnu.org/licenses/>.
*/
#import <Cocoa/Cocoa.h>
#import "ConsoleSwitchCell.h"
@implementation ConsoleSwitchCell
- (void) awakeFromNib
{
if ([self tag] == -1) {
upWithoutShadow = [[NSImage alloc] initByReferencingFile:
[[NSBundle bundleForClass:[self class]]
pathForResource:[self alternateTitle] ofType:@"png"]];
upWithShadow = [[self image] retain];
} else {
upWithoutShadow = [[self alternateImage] retain];
upWithShadow = [[NSImage alloc] initByReferencingFile:
[[NSBundle bundleForClass:[self class]]
pathForResource:[self alternateTitle] ofType:@"png"]];
}
[(NSButton *)[self controlView] setAlternateTitle:nil];
}
- (void) highlight:(BOOL)flag withFrame:(NSRect)frame inView:(NSView *)view
{
// we need highlight only for momentary changing switches, detected via tag value -1
if ([self tag] == -1) {
[super highlight:flag withFrame:frame inView:view];
[leftNeighbour updateShadow:! flag];
}
else
[view setNeedsDisplay:YES];
}
- (void) performClick:(id)sender
{
// called by the key equivalents; the default method causes the switch to highlight
// we need highlight only for momentary changing switches, detected via tag value -1
if ([self tag] == -1)
[super performClick:sender];
else {
[self setState:! [self state]];
[[self target] performSelector:[self action] withObject:sender];
}
[[self controlView] setNeedsDisplay:YES]; // to show keyboad operation via space key with Tiger
}
- (void) setState:(int)state
{
[super setState:state];
[leftNeighbour updateShadow:state];
}
- (void) updateShadow:(BOOL)showShadow
{
if ([self tag] == -1)
[self setImage:showShadow ? upWithShadow : upWithoutShadow];
else
[self setAlternateImage:showShadow ? upWithShadow : upWithoutShadow];
}
@end