[Q] Activating and deactivating fonts (again, sorry)

FROM : Mark de Jong
DATE : Tue Oct 01 21:10:22 2002

I sent this a few days ago. Sorry to bug these lists again, but I'm 
really puzzled by this and need assistance.

Has anyone here worked extensively with FMActivateFonts() and 
FMDeactivateFonts()? I'll be happy to exchange emails off the list, if 
that's more appropriate.

Thanks.

   -- Mark

Begin forwarded message:

> Hi,
>
> I'm having some strange crashes and I think it's because of the way I'm
> trying to use fonts.
>
> Currently, if I want to display a font that is not available from the
> font manager, I try to enable the font with:
>
>     err = FMActivateFonts( &myFontFSSpec, NULL, NULL,
>         globalScope ? kFMGlobalActivationContext : 
> kFMLocalActivationContext);
>
> where "globalScope" is a boolean I pass in to my routine and
> "myFontFSSpec" is an FSSpec pointing to the font I want to use.
>
> I'm trying to display a list of font names in an NSOutlineView. I'd
> like each name to be displayed in its font.
>
>  From what I understand, it seems like I should use
> "kFMLocalActivationContext" when calling "FMActivateFonts()" so that
> the font does not get enabled for the entire system. However,
> regardless of whether I use "kFMLocalActivationContext" or
> "kFMGlobalActivationContext", I get the crash shown below.
>
> The crash seems to occur if I enable many fonts. The specific font does
> not seem to matter (but I guess it could; I have a mix of Type1,
> TrueType, Windows TTF, and OpenType fonts that I'm working with).
>
> My question is: do fonts have to be enabled with FMActivateFonts()
> before they can be used? Or is there a different way to enable fonts
> that just need to be used within an application?
>
> Along similar lines, is there a way to accurately determine the set of
> activated fonts? I've tried using the NSFontManager message
> "availableFonts". However, "availableFonts" does not seem to reflect
> any changes made by calling either "FMActivateFonts()" or
> "FMDeactivateFonts()".
>
> Thanks, in advance, for any suggestions,
>
>     -- Mark
>
>
> Exception:  EXC_BAD_ACCESS (0x0001)
> Codes:      KERN_INVALID_ADDRESS (0x0001) at 0x03b6c04c
>
> Thread 0 Crashed:
>  #0  0x919404c8 in ProcessKerningPairsList
>  #1  0x91937384 in ApplyKerning
>  #2  0x91933698 in _eLLCLayoutText
>  #3  0x91939364 in LLCLayoutText
>  #4  0x933d3c50 in -[NSATSTypesetter
> layoutGlyphsInLayoutManager:startingAtGlyphIndex:maxNumberOfLineFragmen
> t
> s:nextGlyphIndex:]
>  #5  0x931e86e8 in -[NSLayoutManager(NSPrivate)
> _fillLayoutHoleAtIndex:desiredNumberOfLines:]
>  #6  0x931f7990 in
> _NSFastFillAllLayoutHolesUpToEndOfContainerForGlyphIndex
>  #7  0x931e07ac in -[NSLayoutManager
> textContainerForGlyphAtIndex:effectiveRange:]
>  #8  0x931e1bf0 in -[NSLayoutManager glyphRangeForTextContainer:]
>  #9  0x93112d18 in textContainerForTextCell
>  #10  0x93112f20 in _NXDrawTextCell
>  #11  0x932f0d4c in -[NSTextFieldCell drawInteriorWithFrame:inView:]
>  #12  0x932d14e0 in -[NSTableView drawRow:clipRect:]
>  #13  0x9323f11c in -[NSOutlineView drawRow:clipRect:]
>  #14  0x932d4b2c in -[NSTableView drawRect:]
>  #15  0x9335b6c4 in -[NSView _drawRect:clip:]
>  #16  0x9335bee8 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #17  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #18  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #19  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #20  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #21  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #22  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #23  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #24  0x9335c108 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #25  0x931a3640 in -[NSFrameView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #26  0x93321a14 in -[NSThemeFrame
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibl
> e
> RectForView:topView:]
>  #27  0x9335c314 in -[NSView
> _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:]
>  #28  0x9335cef8 in -[NSView displayIfNeeded]
>  #29  0x9336a188 in -[NSWindow displayIfNeeded]
>  #30  0x93369e8c in _handleWindowNeedsDisplay
>  #31  0x90148b1c in __CFRunLoopDoObservers
>  #32  0x90148e8c in __CFRunLoopRun
>  #33  0x9018157c in CFRunLoopRunSpecific
>  #34  0x92ba34cc in RunCurrentEventLoopInMode
>  #35  0x92bb326c in ReceiveNextEventCommon
>  #36  0x92bda280 in BlockUntilNextEventMatchingListInMode
>  #37  0x93082184 in _DPSNextEvent
>  #38  0x930ccf84 in -[NSApplication
> nextEventMatchingMask:untilDate:inMode:dequeue:]
>  #39  0x930ca500 in -[NSApplication run]
>  #40  0x930d2598 in NSApplicationMain
>  #41  0x000046a4 in main (main.m:18)
>  #42  0x000043b8 in _start (crt.c:267)
>  #43  0x00004228 in start
>
> PPC Thread State:
>  srr0: 0x919404c8 srr1: 0x0200f030                vrsave: 0x00000000
>    xer: 0x20000000  lr: 0x10000000  ctr: 0x900741a0  mq: 0x00000000
>    r0: 0x00000000  r1: 0xbfffce60  r2: 0x28002242  r3: 0x00000023
>    r4: 0x0391c02b  r5: 0x00000000  r6: 0x00000010  r7: 0x00000010
>    r8: 0x00000008  r9: 0x00000001  r10: 0x00000000  r11: 0x00250025
>    r12: 0x900741a0  r13: 0x00000000  r14: 0x036d5890  r15: 0x00000000
>    r16: 0x00000800  r17: 0x00000000  r18: 0xbfffd020  r19: 0x036c6550
>    r20: 0x00000000  r21: 0x00000001  r22: 0x03b6c048  r23: 0x00000000
>    r24: 0x00000014  r25: 0x00000025  r26: 0x00000000  r27: 0xbfffd020
>    r28: 0x036ce834  r29: 0x038430d0  r30: 0x00000000  r31: 0x919403b4
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