TextEdit update: first styled text features added

The progress has been a bit slow in the last month because of us being extra busy at our regular daytime jobs, but we did manage to squeeze some long-awaited changes in. We finally started the work on multistyled textedit support, which is extension added to TextEdit API around System 6.0.4, allowing more than a single style to be applied within text edit records.

As we did not have much time to work on this yet during November, we only have so far roughly these features implemented for style support:

  • Multistyled TE record creation using TEStyleNew
  • Partial setting of appending multistyled text using TEStyleInsert
  • Adjusting existing styles using TESetStyle
  • Drawing multistyled text within the TEDoText’s teDraw selector
  • Measuring multistyled text

And the following style properties can be used within the styles:

  • Style font family
  • Text face (bold, italic, underline, etc…)
  • Font size
  • Text color

From the test applications we have been running, the most important ones requiring styled textedit support have been HyperCard 2.x and Marathon. Below is screenshot of HyperCard 2.0 Home stack, with multistyled text showing right on the welcome screen:

HyperCard 2.0 Home stack with multistyled text

And even more importantly, Marathon terminals can now be opened and operated, which means that we can finally proceed forward in Marathon gameplay to the other levels beyond the first one:

Marathon’s terminal view, with multistyled textedit field used for the text rendering

However, there are still some missing features, of which we need add these most important ones next:

  • Finalize TEStyleInsert to handle given StScrpHandle data properly
  • Implement other multistyle TEDoText selectors, such as teFind and teCaret, to allow actual styled text editing
  • Merge identical adjacent styles after style adjust operations, to avoid excessive style run array growth
  • Add other missing selectors to TEDispatch where needed
  • Also implement any other missing toolbox calls used by textedit where needed

With current speed of progress, the most important ones of the remaining parts textedit API should be usable within a couple of weeks. Unless we get too distracted by playing Marathon 🙂

Full list of changes since last post

2020-11-29 23:52:29 +0200 • Added PortChanged (no-op) selector in QDExtensions
2020-11-29 23:27:24 +0200 • Add JSON cmake config for HyperCard 2.2 test app
2020-11-29 23:26:55 +0200 • Add no-op dummy InitDateCache ScriptUtil selector
2020-11-29 23:22:50 +0200 • Implement partially ScriptUtil's SetEnvirons
2020-11-28 04:47:13 +0200 • Fix clamping of negative offset in TEPinScroll
2020-11-28 04:46:09 +0200 • Fix clamping of below bottom in pt-to-line routine
2020-11-28 03:48:03 +0200 • Implement TEGetPoint selector for TEDispatch
2020-11-27 01:30:49 +0200 • Handle styled text in TEDispose
2020-11-27 00:52:53 +0200 • Refactor TE locals, don't cache dereferenced hTE
2020-11-26 05:38:32 +0200 • Other fixes to make TESetStyle to work & add debug
2020-11-26 05:33:34 +0200 • Get correct style run idx for singlebyte edge case
2020-11-26 05:31:53 +0200 • Fix lineheight calc (wrong index & zero new slots)
2020-11-26 05:28:27 +0200 • Add missing TEApplyStyle byteswap (run->startChar)
2020-11-26 05:27:33 +0200 • Return correct style index @ existing style lookup
2020-11-26 05:26:30 +0200 • Set stCount, stHeight and stAscent for new styles
2020-11-26 05:25:31 +0200 • Add viewRect validation to TEDoText (debug mode)
2020-11-26 05:24:38 +0200 • Set stCount to 1 when inserting a new style
2020-11-26 05:23:52 +0200 • Re-deref TEHandle in TEStyleNew after hText alloc
2020-11-26 05:22:51 +0200 • Increment text pointer in TEFindLine for new style
2020-11-26 05:19:32 +0200 • Fix byteswap in numerator check in StdText
2020-11-25 04:28:32 +0200 • Work on TESetStyle (not yet working, but almost)
2020-11-23 03:24:16 +0200 • Start work on TESetStyle (and TEContinuousStyle)
2020-11-22 05:15:36 +0200 • Add style support to TEGetLineForV
2020-11-22 04:47:30 +0200 • TESetSelect styled text support
2020-11-22 04:45:35 +0200 • More TEStyleInsert work (line heights calculated)
2020-11-22 00:57:54 +0200 • TEStyleInsert progress (TEFindLine style support)
2020-11-21 04:53:05 +0200 • TextEdit BIG refactor & start adding TEStyleInsert
2020-11-21 02:46:25 +0200 • Implement GetCPixel and SetCPixel (ResEdit PACK 1)
2020-11-20 15:59:17 +0200 • Fix colorQD colormap bug, 1&2-bit modes flipped fg
2020-11-20 15:37:02 +0200 • Implement GetEntryUsage trap for palette manager
2020-11-20 15:23:33 +0200 • Implement old-style FONT lookup in RealFont
2020-11-20 14:47:15 +0200 • Fix bugs in styled text rendering, it works now
2020-11-20 13:56:34 +0200 • Don't set/read flags for purged/unallocated handle
2020-11-20 12:44:49 +0200 • Implement TEGetHeight (non-styled) for SimCity 2K
2020-11-20 12:28:04 +0200 • Make SWAP macro single-line safe
2020-11-20 05:48:11 +0200 • Fix for what looks like VERY strange bug in Excel…
2020-11-20 05:45:10 +0200 • Add dummy GetPortNameFromPSN selector @ OSDispatch
2020-11-20 05:44:27 +0200 • Add PPC trap dispatcher w/ dummy PPCInit & PPCOpen
2020-11-20 05:20:57 +0200 • Temporarily increase system heap size
2020-11-20 05:20:15 +0200 • Dummy switcher info data for testing Excel 3.0
2020-11-20 04:36:18 +0200 • Prototype styled TextEdit draw & linewidth measure
2020-11-10 22:48:13 +0200 • Implement TEGetStyleHandle for TEDispatch
2020-11-10 22:28:22 +0200 • Implement dummy IsLayer selector for LayerDispatch
2020-11-10 22:09:35 +0200 • Add TEDispatch, and TECustomHook and TEFeatureFlag
2020-11-10 03:22:20 +0200 • Implement TEStyleNew trap handler for TextEdit
2020-11-10 03:20:44 +0200 • Update Scarab of RA test app config to new version
2020-11-08 13:47:35 +0200 • Optional release version logging/assertions toggle
2020-11-08 13:46:56 +0200 • Minor code cleanups (logging, prep dirtyrects etc)
2020-11-08 13:27:22 +0200 • Fix src/mask address calculation in B&W CopyMask
2020-11-08 00:54:19 +0200 • Reinforce save of auxiliary regs in C->68k calls
2020-11-08 00:42:58 +0200 • Fix clamping of teLength in TextEdit's DoDraw proc
2020-11-04 16:17:43 +0200 • Add GWorld rowbytes calculation method selection
2020-10-31 03:26:53 +0200 • Handle wInGoAway also in SystemClick (Close DA)
2020-10-31 03:25:08 +0200 • Add missing change from the slot manager commit