Re: [Pyobjc-dev] Using OS-X frameworks from Python

[Arnar B. <ar...@gm...>]

Hi there,

On Feb 10, 2008 5:10 PM, Ronald Oussoren <ron...@ma...> wrote:
> > Can I  use it from a custom extension module (written in C)?
> > Can I write a Python extension module in Objective-C?
>
> Yes to both, but that's not really necessary. Both PyObjC 1.x and
> PyObjC 2.x (shipping with Leopard) have tools to automaticly create a
> python wrapper from header files. Those are a bit tuned to the way
> Apple writes headers, but with some luck work with the WiiRemote
> headers as well.

Thanks Ronald. I figured out how to talk with the framework and
specify delegates in C with the help of another member of this list
(John Stoner). Didn't know about this tool, will look at that.

Currently I'm dealing with "Bus errors" which I don't know if they are
my fault (i.e. incorrect specification of the informal interfaces) or
something with the WiiRemote framework. I suspect the former.

I'm pasting the code I have now below if anyone's interested.

thanks,
Arnar


import objc
objc.loadBundle("WiiRemote", globals(), bundle_path="WiiRemote.framework")


from Foundation import *
from AppKit import *
from PyObjCTools import AppHelper

wd = WiiRemoteDiscovery.new()

IRData = objc.createStructType("IRData", "iii", ["x", "y", "s"])

WiiRemoteDiscoveryDelegate = objc.informal_protocol(
    "WiiRemoteDiscoveryDelegate",
    [
        objc.selector(None,
selector="WiiRemoteDiscovered:",signature="v@:@",isRequired=0),
        objc.selector(None, selector="WiiRemoteDiscoveryError:",
signature="v@:i",isRequired=0)
    ])

WiiRemoteDelegate = objc.informal_protocol(
    "WiiRemoteDelegate",
    [
        objc.selector(None, selector="irPointMovedX:",
signature="v@:ff@", isRequired=False),
        objc.selector(None, selector="rawIRData:",
signature="v@:[4{IRData=iii}]@", isRequired=False),
        objc.selector(None, selector="buttonChanged:",
signature="v@:Sc@", isRequired=False),
        objc.selector(None, selector="accelerationChanged:",
signature="v@:SCCC@", isRequired=False),
        objc.selector(None, selector="joyStickChanged:",
signature="v@:SCC@", isRequired=False),
        objc.selector(None, selector="analogButtonChanged:",
signature="v@:SI@", isRequired=False),
        objc.selector(None, selector="wiiRemoteDisconnected:",
signature="v@:@", isRequired=False),
    ])

wii = None

class wii_remote_discovery_delegate(NSObject):
    def WiiRemoteDiscovered_(self, wiiRemote):
        self.wiiRemote = wiiRemote
        global wii
        wii = wiiRemote.retain()
        print "discovered"
        delegate = wii_remote_delegate.new()
        wii.setDelegate_(delegate)
        print "set delegate"
        wii.setLEDEnabled1_enabled2_enabled3_enabled4_(True, False, True, False)
        #wii.setMotionSensorEnabled_(True)
    def WiiRemoteDiscoveryError_(self, returnCode):
        print "not discovered, error ", returnCode
        AppHelper.stopEventLoop()

class wii_remote_delegate(NSObject):

    def irPointMovedX_Y_wiiRemote_(self, px, py, wiiRemote):
        print 'irPointMovedX:Y:wiiRemote:'

    def rawIRData_wiiRemote_(self, irData, wiiRemote):
        print 'rawIRData:wiiRemote:'

    def buttonChanged_isPressed_wiiRemote_(self, type, isPressed, wiiRemote):
        print 'buttonChanged:isPressed:wiiRemote:'

    def accelerationChanged_accX_accY_accZ_wiiRemote_(self, type,
accX, accY, accZ, wiiRemote):
        print 'accelerationChanged:accX:accY:accZ:wiiRemote:'

    def joyStickChanged_tiltX_tiltY_wiiRemote_(self, type, tiltX,
tiltY, wiiRemote):
        print 'joyStickChanged:tiltX:tiltY:wiiRemote:'

    def analogButtonChanged_amount_wiiRemote_(self, type, press, wiiRemote):
        print 'analogButtonChanged:amount:wiiRemote:'

    def wiiRemoteDisconnected_(self, device):
        print 'wiiRemoteDisconnected:'


x = wii_remote_discovery_delegate.new()
wd.setDelegate_(x)
wd.start()

try:
    AppHelper.runConsoleEventLoop(installInterrupt=True)
except KeyboardInterrupt:
    print "Ctrl-C received, quitting."
    AppHelper.stopEventLoop()


"""
The informal interfaces from WiiRemote's headers:

@interface NSObject( WiiRemoteDiscoveryDelegate )

- (void) WiiRemoteDiscovered:(WiiRemote*)wiimote;
- (void) WiiRemoteDiscoveryError:(int)code;

@end;


@interface NSObject( WiiRemoteDelegate )

- (void) irPointMovedX:(float)px Y:(float)py wiiRemote:(WiiRemote*)wiiRemote;
- (void) rawIRData: (IRData[4])irData wiiRemote:(WiiRemote*)wiiRemote;
- (void) buttonChanged:(WiiButtonType)type isPressed:(BOOL)isPressed
wiiRemote:(WiiRemote*)wiiRemote;
- (void) accelerationChanged:(WiiAccelerationSensorType)type
accX:(unsigned char)accX accY:(unsigned char)accY accZ:(unsigned
char)accZ wiiRemote:(WiiRemote*)wiiRemote;
- (void) joyStickChanged:(WiiJoyStickType)type tiltX:(unsigned
char)tiltX tiltY:(unsigned char)tiltY wiiRemote:(WiiRemote*)wiiRemote;
- (void) analogButtonChanged:(WiiButtonType)type
amount:(unsigned)press wiiRemote:(WiiRemote*)wiiRemote;
- (void) wiiRemoteDisconnected:(IOBluetoothDevice*)device;


//- (void) dataChanged:(unsigned short)buttonData accX:(unsigned
char)accX accY:(unsigned char)accY accZ:(unsigned char)accZ
mouseX:(float)mx mouseY:(float)my;


@end
"""