Making pop-up menus in custom Quartz Composer patches is actually surprisingly easy.

Please see kineme.net for Leopard-specific informations.
- Set up a QCIndexPort input. QCIndexPorts provide values from 0 to whatever max you specify using
- (void)setMaxIndexValue:(unsigned int)max;
.
@interface IndexPortPopUpDemoPatch : QCPatch { QCIndexPort *inputPerson; } ... @end
- Add the “menu” key to the port’s input attributes:
<key>inputAttributes</key> <dict> <key>inputPerson</key> <dict> <key>description</key> <string>Person</string> <key>name</key> <string>Person</string> <key>menu</key> <array> <string>Arthur Dent</string> <string>Ford Prefect</string> <string>Zaphod Beeblebrox</string> <string>Marvin</string> <string>Trillian</string> <string>Slartibartfast</string> <string>Agrajag</string> <string>Wonko the Sane</string> </array> </dict> </dict>
- Make sure you set the max index value in the
initWithIdentifier
function:
- (id)initWithIdentifier:(id)fp8 { id z=[super initWithIdentifier:fp8]; [inputPerson setMaxIndexValue:7]; return z; }
- Read the value out of the QCIndexPort using
- (unsigned int)indexValue;
.
Steve Mokris is a developer at Kosada, Inc.
can you make and post a screen shot of it working within Quartz Composer itself? Holy cow I’m so excited to give this a shot this weekend :)
Submitted by cwright on 2007.07.05 @ 12:55. |
cwright -
The screenshot in the top right corner is actually QC itself.
smokris
Submitted by smokris on 2007.07.05 @ 12:58. |
Ahh, right you are. I wasn’t familiar with the Inspector window in QC :) I thought that was the Interface Builder’s Inspector guy. My Bad :)
Submitted by cwright on 2007.07.05 @ 13:18. |
To generate menu items at runtime, you have to override QCIndexPort’s initWithNode method. it looks like this:
Here’s some code to do just that:
(id)initWithNode:(id)fp8 arguments:(id)fp12 { NSMutableDictionary *config = [fp12 mutableCopy]; NSMutableDictionary *attr; NSMutableArray *menu = [[NSMutableArray alloc] init];
[config autorelease]; [menu autorelease];
attr = [config objectForKey:@”attributes”];
[menu addObject:@”foo”]; [menu addObject:@”bar”]; [menu addObject:@”baz”];
[attr setValue:menu forKey:@”menu”];
return [super initWithNode:fp8 arguments:config]; }
Submitted by cwright on 2007.07.10 @ 10:29. |