Hello list,
A few days ago I said I am working on an audio game, when I asked about code
organization. I have taken the advice I was given and am simply trying to get
things to work, keeping the major portions separated as much as I can but
mostly just wanting the project to do what I want. For the moment, what I want
is to log keystrokes, so I can then implement a keystroke listener on the
different views I will have. However, the single view I am trying to use logs
nothing, but neither do I get any errors.
Before I continue I need to put out a reminder: I am *not* using Interface
Builder, because there is no way for me, a Voiceover user, to reliably tie
actions to UI elements. About a year ago I emailed this list about laying out
UIs in code, and was provided with some extremely helpful code samples which I
am trying now to use. The delay of almost a year, by the way, was partly my
wanting to get more comfortable with Objective-C before taking on this type of
project, and partly hoping that Apple would fix Xcode so I could fully use it.
They have failed to do so, but I at least feel much more confident using
Objective-c, so here I am once more.
Anyway, the problem remains that I need to capture keystrokes (and eventually
mouse movements) in a subclass of NSView, but nothing seems to happen. Since
this is an audio game, there is no need for any UI controls to be drawn - I
need only the keyboard/mouse event handler. Therefore, my view has no UI
controls, it is merely a rectangle, or should be, with an origin of (0,0).
Below, and I apologize in advance for how long this will be, I have laid out
the path taken to get the view on the screen. Where I feel it is necessary, I
have given source code. Note that I still have the main XIB file Xcode
generated. Perhaps I should remove it, I don't know yet.
1. My app runs, and the AppDelegate's applicationDidFinishLaunching method is
called automatically. In here I create an AITGameController object,, which does
the lion's share of the work. I then call this object's initGame and startLoop
methods, the first to set up the game and the second to begin the game loop
that will drive the app.
2. The AITGameController's init method sets up the AITViewController, whose
source is below. It then sets up the AITAudioMenu (my NSView subclass, which
is supposed to be logging keystrokes). Now we get into the fun part, so here's
the code I am using:
//from AITGameController > init
[self setViewManager:[[AITViewController alloc] init]];
NSRect windowSize=NSMakeRect(0.0, 0.0, 200.0, 150.0);
NSWindow* mainWindow=[viewManager makeWindowWithRect:&windowSize
style:NSTitledWindowMask|NSMiniaturizableWindowMask];
NSRect menuSize=NSMakeRect(0.0, 0.0, 100.0, 100.0);
AITAudioMenu* mainMenu=[[AITAudioMenu alloc] initWithFrame:menuSize];
[viewManager makeFrontWindow:mainWindow];
[viewManager addSubview:mainMenu toWindow:mainWindow];
I thought this would be enough, that adding the subview would cause things to
start working, but it does not seem to. Now, here's the viewController code -
whatever is wrong is probably in here somewhere.
//AITViewController.m
#import "AITViewController.h"
@implementation AITViewController
-(AITViewController*) init{
self=[super init];
if(!self) return nil;
return self;
}
-(NSWindow*) makeWindowWithRect:(NSRect) rect style:(NSUInteger) style{
NSWindow* theWindow= [[NSWindow alloc] initWithContentRect:rect
styleMask:style backing:NSBackingStoreBuffered defer:YES];
return theWindow;
}
-(void) makeFrontWindow:(NSWindow*) theWindow{
[theWindow center];
[theWindow makeKeyAndOrderFront: self];
}
-(void) addSubview:(NSView*) theView toWindow:(NSWindow*) theWindow{
NSView* cv=[theWindow contentView];
[cv addSubview:theView];
}
@end
And just in case, here's the AudioMenu class:
//AITAudioMenu.m
#import "AITAudioMenu.h"
@implementation AITAudioMenu
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code here.
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect
{
[super drawRect:dirtyRect];
// Drawing code here.
}
-(void) keyUp:(NSEvent*) event{
NSLog(@"Key pressed: %hu. Modifiers: %lu.", [event keyCode], [event
modifierFlags]);
[super keyUp:event];
}
@end
You will notice I have done very little to the template Xcode gave me.
Eventually I will do much more, but for now I just want that keyUp method to
work. Once it is, I'll implement the actual functionality of the audio menu,
but until I can detect keystrokes, I'd have nothing to which to bind the menu's
methods anyway.
I hope all this makes some sense. I think what is tripping me up is trying to
manage windows like this while IB is still being used, but I really don't know.
Thanks for any help, and if anyone from Apple is on here: anytime you guys can
make IB fully accessible, I and other budding developers would very much
appreciate it. Yes, bug reports have been filed. :)
Have a great day,
Alex (msg sent from Mac Mini)
[email protected]
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