Assertion failed when using precise scrolling

[alexey-lysiuk]

By opening any large enough file and using precise scrolling, the HexFiend breaks with this:
Assertion failed: (range.location >= 0), function -[HFController setDisplayedLineRange:], file HFController.m, line 288.

The problem is that the value of HFController.lineHeight is zero, and it is used as a divisor in [HFController scrollWithScrollEvent] at line 1197, leading to NaN passed as parameter to [HFController scrollByLines].

I am using Debug configuration, compiled with Xcode 6.1 and running on OS X 10.10.

[alexey-lysiuk]

Call stack:

HexFiend`-[HFController setDisplayedLineRange:](self=0x0000000163f39f00, _cmd=0x000000010014344b, range=<unavailable>) + 93 at HFController.m:288
HexFiend`-[HFController scrollByLines:](self=0x0000000163f39f00, _cmd=0x00007fff966204c9, lines=NaN) + 525 at HFController.m:1167
HexFiend`-[HFController scrollWithScrollEvent:](self=0x0000000163f39f00, _cmd=0x0000000100144239, scrollEvent=0x000000016f6c6f60) + 553 at HFController.m:1199
HexFiend`-[HFTextRepresenter scrollWheel:](self=0x0000000163eadfb0, _cmd=0x00007fff8bd5f83c, event=0x000000016f6c6f60) + 58 at HFTextRepresenter.m:225
HexFiend`-[HFRepresenterTextView scrollWheel:](self=0x0000000163ecfe50, _cmd=0x00007fff8bd5f83c, event=0x000000016f6c6f60) + 58 at HFRepresenterTextView.m:1933
AppKit`-[NSWindow _reallySendEvent:] + 4211
AppKit`-[NSWindow sendEvent:] + 368
AppKit`-[NSApplication sendEvent:] + 2009
AppKit`-[NSApplication run] + 711
AppKit`NSApplicationMain + 1832

[kainjow]

I see this. The question is why is lineHeight 0? Something seems broken here.

[kainjow]

Should be fixed in 710c985. Please verify.