What remains is the second part: how does NSButton implement keyboard shortcuts. How would I implement and additional shortcut for a button which already has one.
Best, Pierre Bernard Houdah Software s.à r.l.extern NSUInteger carbonToCocoaModifierFlags(UInt32 carbonModifierFlags); extern NSString *stringForCocoaModifierFlagsAndKeyCode(NSUInteger flags, NSString *keyEquivalent);
@implementation HHShortcutButton
@synthesize baseTitle;
- (id)initWithCoder:(NSCoder*)coder
{
if ((self = [super initWithCoder:coder]) != nil) {
[self setBaseTitle:[self title]];
}
return self;
}
- (void)viewDidMoveToWindow
{
[super viewDidMoveToWindow];
NSWindow *window = [self window];
if (window != nil) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(windowDidUpdate:)
name:NSWindowDidUpdateNotification object:window];
}
}
- (void)setTitle:(NSString*)aTitle
{
[super setTitle:aTitle];
[self setBaseTitle:[self title]];
}
- (void)windowDidUpdate:(NSNotification*)notification
{
if (GetCurrentEventKeyModifiers() & cmdKey) {
NSString *keyEquivalent = [self keyEquivalent];
NSUInteger keyEquivalentModifierMask = [self
keyEquivalentModifierMask];
[super
setTitle:stringForCocoaModifierFlagsAndKeyCode
(keyEquivalentModifierMask, keyEquivalent)];
}
else {
[super setTitle:[self baseTitle]];
}
}
@end
extern NSUInteger carbonToCocoaModifierFlags(UInt32 carbonModifierFlags)
{
NSUInteger cocoaModifierFlags = 0;
if (carbonModifierFlags & shiftKey) {
cocoaModifierFlags |= NSShiftKeyMask;
}
if (carbonModifierFlags & cmdKey) {
cocoaModifierFlags |= NSCommandKeyMask;
}
if (carbonModifierFlags & optionKey) {
cocoaModifierFlags |= NSAlternateKeyMask;
}
if (carbonModifierFlags & controlKey) {
cocoaModifierFlags |= NSControlKeyMask;
}
return cocoaModifierFlags;
}
extern NSString *stringForCocoaModifierFlagsAndKeyCode(NSUInteger
flags, NSString *keyEquivalent)
{
return [NSString stringWithFormat:@"[EMAIL PROTECTED]@[EMAIL PROTECTED]@%@",
(flags & NSCommandKeyMask ? [NSString stringWithFormat:@"%C + ",
kCommandUnicode] : @""),
(flags & NSAlternateKeyMask ? [NSString stringWithFormat:@"%C + ",
kOptionUnicode] : @""),
(flags & NSControlKeyMask ? [NSString stringWithFormat:@"%C + ",
kControlUnicode] : @""),
(flags & NSShiftKeyMask ? [NSString stringWithFormat:@"%C + ",
kShiftUnicode] : @""),
[keyEquivalent uppercaseString]];
}
On 22 Apr 2008, at 17:48, Pierre Bernard wrote:
Hi!I love how the buttons in some "save before closing" sheets reveal themselves by being added to the button name when the command key is held for a while. The one example I can think of is AppleWorks 6. Wish all apps / buttons had that.Is this a Carbon thing? How would I go about to implement this?Seeing that the button in question is not in the responder chain, I guess the implementation ought to be moved to the window or window controller. This doesn't strike me as the best place. I'd rather have a reusable NSButton subclass.Such buttons also may have multiple shortcuts. E.g. the default save button is triggered by both Enter and cmd-S. This does not seem to be possible with NSButton. Again I wonder if I should override keyDown: in my window controller.BTW, how are keyboard shortcuts on NSButtons implemented? Do they somehow register with the window for events or does the window walk the subcomponents to find one which may respond?Best, Pierre --- Pierre Bernard http://www.bernard-web.com/pierre http://www.houdah.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/i_love_my%40mac.com This email sent to [EMAIL PROTECTED]
--- Pierre Bernard http://www.bernard-web.com/pierre http://www.houdah.com
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