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Re: some help with NSBrowser needed
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From: |
Sebastian Reitenbach |
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Subject: |
Re: some help with NSBrowser needed |
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Date: |
Wed, 02 Jan 2013 19:38:11 +0100 |
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User-agent: |
SOGoMail 2.0.3 |
On Wednesday, January 2, 2013 19:24 CET, "Sebastian Reitenbach"
<sebastia@l00-bugdead-prods.de> wrote:
>
> On Tuesday, January 1, 2013 22:59 CET, Fred Kiefer <fredkiefer@gmx.de> wrote:
>
> > I think the problematic line is this one:
> >
> > browser = [[NSBrowser alloc] init];
> Even commenting out that line, it still brings up the window, and I still get
> the
> warning about the negative width.
>
> A backtrace is below, in case of interest.
>
>
> >
> > You create a browser with a zero size frame. (The -init method of NSView
> > calls -initWithFrame: with NSZeroRect) When the browser later tries to
> > draw its various parts, some of these may end up with negative sizes.
> > you could set a breakpoint on NSView.m:1182 to find out which parts are
> > affected.
> >
> > If your code works on Cocoa, but not on GNUstep, we might have to change
> > the default rectangle for NSBrowser.
>
> Don't know about if/how it works with Cocoa. I'm lacking a mac ;)
> But what I tried was to create a test app, just with minimal code what I
> have,
> and what can I say, this just seems to work. So, now I only need to figure out
> why one works, the other not.
>
> thanks,
> Sebastian
>
> #0 -[NSView setFrame:] (self=0x832ee404, _cmd=0x2f0b6430, frameRect=
> {origin = {x = 21, y = 2}, size = {width = -23, height = 4}})
> at NSView.m:1180
> #1 0x0f186abd in -[NSClipView setFrame:] (self=0x832ee404, _cmd=0x2f1463e8,
> rect={origin = {x = 21, y = 2}, size = {width = -23, height = 4}})
> at NSClipView.m:580
> #2 0x0f2d9976 in -[NSView resizeWithOldSuperviewSize:] (self=0x832ee404,
> _cmd=0x2f1463d0, oldSize={width = 100, height = 100}) at NSView.m:2060
> #3 0x0f2d2690 in -[NSView resizeSubviewsWithOldSize:] (self=0x832ee304,
> _cmd=0x2f116688, oldSize={width = 100, height = 100}) at NSView.m:1935
> #4 0x0f262dcb in -[NSScrollView resizeSubviewsWithOldSize:]
> (self=0x832ee304,
> _cmd=0x2f146320, oldSize=The value of variable 'oldSize' is distributed
> across several
> locations, and GDB cannot access its value.
>
> ) at NSScrollView.m:1270
> #5 0x0f2d94b8 in -[NSView setFrame:] (self=0x832ee304, _cmd=0x2f116608,
> frameRect={origin = {x = 0, y = 23}, size = {width = 0, height = 0}})
> at NSView.m:1228
> #6 0x0f2632d9 in -[NSScrollView setFrame:] (self=0x832ee304,
> _cmd=0x2f0abc00,
> rect={origin = {x = 0, y = 23}, size = {width = 0, height = 0}})
> at NSScrollView.m:1057
> #7 0x0f170822 in -[NSBrowser tile] (self=0x7e3afa04, _cmd=0x2f0aba80)
> at NSBrowser.m:1972
> #8 0x0f16cfa4 in -[NSBrowser displayColumn:] (self=0x7e3afa04,
> _cmd=0x2f0abf18, column=0) at NSBrowser.m:874
> #9 0x0f16eaca in -[NSBrowser(Private) _performLoadOfColumn:] (
> ---Type <return> to continue, or q <return> to quit---
> self=0x7e3afa04, _cmd=0x2f0aba78, column=0) at NSBrowser.m:3106
> #10 0x0f16d27e in -[NSBrowser addColumn] (self=0x7e3afa04, _cmd=0x2f0ab970)
> at NSBrowser.m:817
> #11 0x0f16ca4e in -[NSBrowser loadColumnZero] (self=0x7e3afa04,
> _cmd=0x2f0ab9b8) at NSBrowser.m:1057
> #12 0x0f17012c in -[NSBrowser setPath:] (self=0x7e3afa04, _cmd=0x3c01aa70,
> path=0x3c01a4d0) at NSBrowser.m:572
> #13 0x1c01c043 in -[CollectionBrowser awakeFromNib] (self=0x888adf04,
> _cmd=0x2f169d90) at CollectionBrowser.m:64
> #14 0x0f335266 in -[GSNibContainer awakeWithContext:] (self=0x8adecd04,
> _cmd=0x2f180348, context=0x7e8b5a04) at GSGormLoading.m:250
> #15 0x0f369164 in -[GSGormLoader loadModelData:externalNameTable:withZone:] (
> self=0x81b49754, _cmd=0x2f0f6830, data=0x81b49154, context=0x7e8b5a04,
> zone=0x233af300) at GSGormLoader.m:120
> #16 0x0f21bb76 in -[NSNib instantiateNibWithExternalNameTable:withZone:] (
> self=0x835b9664, _cmd=0x2f0ad3b0, externalNameTable=0x7e8b5a04,
> zone=0x233af300) at NSNib.m:153
> #17 0x0f1747d5 in +[NSBundle(NSBundleAdditions)
> loadNibFile:externalNameTable:withZone:] (self=0x2334a1a0, _cmd=0x2f14f3e8,
> fileName=0x805f3f84,
> context=0x7e8b5a04, zone=0x233af300) at NSBundleAdditions.m:236
> #18 0x0f2f91f5 in -[NSWindowController loadWindow] (self=0x888adf04,
> _cmd=0x2f14f308) at NSWindowController.m:482
> #19 0x0f2f7d41 in -[NSWindowController window] (self=0x888adf04,
> ---Type <return> to continue, or q <return> to quit---
> _cmd=0x2f14f288) at NSWindowController.m:312
> #20 0x0f2f83d8 in -[NSWindowController showWindow:] (self=0x888adf04,
> _cmd=0x3c0052e8, sender=0x80c66e04) at NSWindowController.m:392
> #21 0x1c0041a0 in -[AppController browseCollectionByDirectory:] (
> self=0x80c66e04, _cmd=0x88a2b790, sender=0x8469a084) at
> AppController.m:172
> #22 0x0f142412 in -[NSApplication sendAction:to:from:] (self=0x8802bb04,
> _cmd=0x2f0ef920, aSelector=0x88a2b790, aTarget=0x80c66e04,
> sender=0x8469a084) at NSApplication.m:2231
> #23 0x0f209d71 in -[NSMenu performActionForItemAtIndex:] (self=0x8881e4c4,
> _cmd=0x2f0f2620, index=1) at NSMenu.m:1315
> #24 0x0f21474e in -[NSMenuView _trackWithEvent:startingMenuView:] (
> self=0x7fc11804, _cmd=0x2f0f2688, event=0x8b842104,
> mainWindowMenuView=0x0)
> at NSMenuView.m:1819
> #25 0x0f211870 in -[NSMenuView trackWithEvent:] (self=0x7fc11804,
> _cmd=0x2f0f26f8, event=0x7fdc49c4) at NSMenuView.m:1851
> #26 0x0f211adf in -[NSMenuView mouseDown:] (self=0x7fc11804, _cmd=0x2f14dca0,
> theEvent=0x7fdc49c4) at NSMenuView.m:1891
> #27 0x0f2f2cb9 in -[NSWindow sendEvent:] (self=0x7fc11a04, _cmd=0x2f09ea80,
> theEvent=0x7fdc49c4) at NSWindow.m:3790
> #28 0x0f144d5c in -[NSApplication sendEvent:] (self=0x8802bb04,
> _cmd=0x2f09e9b8, theEvent=0x7fdc49c4) at NSApplication.m:2106
> #29 0x0f147bc5 in -[NSApplication run] (self=0x8802bb04, _cmd=0x2f094488)
> at NSApplication.m:1563
> ---Type <return> to continue, or q <return> to quit---
> #30 0x0f126ad3 in NSApplicationMain (argc=1, argv=0xcfbd5890) at
> Functions.m:91
> #31 0x1c01c724 in gnustep_base_user_main (argc=1, argv=0xcfbd5890) at
> main.m:30
> #32 0x0343d58e in main (argc=1, argv=Cannot access memory at address 0xc0010
> ) at NSProcessInfo.m:984
> #33 0x1c003767 in ___start (argc=1, argv=0xcfbd5890, envp=0xcfbd5898,
> cleanup=0, obj=0x0, ps_strings=0xcfbfdff0)
> at /usr/src/lib/csu/i386/crt0.c:104
> #34 0x1c0036e2 in _start () at /usr/src/lib/csu/i386/crt0.c:77
>
>
> >
> > Hope this helps,
> > Fred
> >
> >
> > On 01.01.2013 18:17, Sebastian Reitenbach wrote:
> > > for MPDCon, i want to have a filesystem like browser to browse through
> > > the music
> > > directories. The Interface is created in Gorm, and in my class, I
> > > implemented the
> > > "passive" NSBrowser delegate methods:
> > >
> > > - (NSInteger)browser:(NSBrowser *)sender
> > > numberOfRowsInColumn:(NSInteger)column;
> > > - (void)browser:(NSBrowser *)sender willDisplayCell:(id)cell
> > > atRow:(NSInteger)row column:(NSInteger)column;
> > >
> > > My class is a subclass of NSWindowController, and is just a NSWindow, with
> > > a NSBrowser in it, and one IBOutlet NSBrowser *browser.
> > >
> > > I can see that both delegate methods get called from within awakeFromNib.
> > > There at the end I have:
> > >
> > > browser = [[NSBrowser alloc] init];
> > > [browser setDelegate:self];
And now, 5 minutes later, I found it. Commenting out both lines above, and then
in Gorm, connecting the delegate of the browser with the NSOwner, it just
does what I want.
For whatever reason it above didn't worked, I don't know.
Anyways, thanks! Sometimes it just helps to talk about ;)
Sebastian
> > > [browser setPath:@"/"];
> > > }
> > >
> > > the setPath: actually triggers calling the delegate methods. I have some
> > > NSLogs in them, to see if
> > > they get called:
> > >
> > > 2013-01-01 17:56:10.400 MPDCon[2484] here in numberOfRowsInColumn 0
> > > 2013-01-01 17:56:10.400 MPDCon[2484] returning count: 5
> > > 2013-01-01 17:56:10.760 MPDCon[2484] here in willDisplayCell
> > > <NSBrowserCell: 0x80c95704> 0 0, adding: /reggae
> > > 2013-01-01 17:56:11.031 MPDCon[2484] here in willDisplayCell
> > > <NSBrowserCell: 0x80c95584> 1 0, adding: /techno
> > > 2013-01-01 17:56:11.287 MPDCon[2484] here in willDisplayCell
> > > <NSBrowserCell: 0x80c95044> 2 0, adding: /ska
> > > 2013-01-01 17:56:11.539 MPDCon[2484] here in willDisplayCell
> > > <NSBrowserCell: 0x80c955c4> 3 0, adding: /folk
> > > 2013-01-01 17:56:11.786 MPDCon[2484] here in willDisplayCell
> > > <NSBrowserCell: 0x80c95144> 4 0, adding: /other
> > > 2013-01-01 17:56:11.787 MPDCon[2484] File NSView.m: 1182. In -[NSView
> > > setFrame:] given negative width
> > >
> > > The delegate methods, as I have them for now, can be seen below.
> > > It's my first time dealing with NSBrowser, so I hope its just something
> > > easy that I have overlooked while
> > > trying to figure out what's (not) going on.
> > > I also wonder about the last line of the output from NSView, what this
> > > could be about?
> > > I'm on OpenBSD i386.
> > >
> > > cheers,
> > > Sebastian
> > >
> > >
> > > - (NSInteger)browser:(NSBrowser *)sender
> > > numberOfRowsInColumn:(NSInteger)column
> > > {
> > > NSLog(@"here in numberOfRowsInColumn %d", column);
> > > NSInteger count, blubb=0;
> > > NSEnumerator *dirEnum;
> > > NSString *dir;
> > > NSMutableArray *tmpArray = [NSMutableArray array];
> > >
> > > dirEnum = [directories objectEnumerator];
> > >
> > > while ((dir = [dirEnum nextObject]) != nil && blubb < 5)
> > > {
> > > if ([[dir pathComponents] count] >= column)
> > > {
> > > dir = [[dir pathComponents] objectAtIndex:column];
> > > if (![tmpArray containsObject:dir])
> > > {
> > > [tmpArray addObject:dir];
> > > blubb++;
> > > }
> > > }
> > > }
> > > count = [tmpArray count];
> > > [tmpArray release];
> > > NSLog(@"returning count: %d", count);
> > > return count;
> > > }
> > >
> > > - (void)browser:(NSBrowser *)sender willDisplayCell:(id)cell
> > > atRow:(NSInteger)row column:(NSInteger)column
> > > {
> > > NSEnumerator *dirEnum;
> > > NSString *dir;
> > > NSMutableArray *tmpArray = [NSMutableArray array];
> > >
> > > dirEnum = [directories objectEnumerator];
> > >
> > > while ((dir = [dirEnum nextObject]) != nil)
> > > {
> > > if ([[dir pathComponents] count] >= column)
> > > {
> > > dir = [[dir pathComponents] objectAtIndex:column];
> > > if (![tmpArray containsObject:dir])
> > > {
> > > //[tmpArray addObject:dir];
> > > [tmpArray addObject:[NSString stringWithFormat:@"/%@",
> > > dir]];
> > > }
> > > }
> > > }
> > > NSLog(@"here in willDisplayCell %@ %d %d, adding: %@", cell, row, column,
> > > [tmpArray objectAtIndex:row]);
> > > [cell setStringValue:[tmpArray objectAtIndex:row]];
> > > [cell setTitle:[tmpArray objectAtIndex:row]];
> > > [cell setLoaded: YES];
> > > }
> >
> >
> > _______________________________________________
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> > Discuss-gnustep@gnu.org
> > https://lists.gnu.org/mailman/listinfo/discuss-gnustep
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