Re: Elements for inactive additional selections

On Wednesday, March 27, 2024 at 2:13:48 AM UTC Neil Hodgson wrote:

[email protected]:
 

Is there a way within Scintilla of physically disabling the 
SELECTION_INACTIVE_BACK element? "Just not setting it" lets it pull in the 
OS default.


Elements can be set to nothing with SCI_RESETELEMENTCOLOUR but that is 
unlikely to help here as another element, commonly SELECTION_BACK, will be 
used. If you reset all the potential choices for selection background then 
Scintilla will draw with bugColour (which is magenta) since it *has* to 
clear those otherwise uninitialized pixels to provide a consistent 
appearance.

I suspected there was no "just turn it off" switch because I didn't see any 
mention of it in the documentation
 

Until more progress is seen, use SC_LAYER_OVER_TEXT in preference 
to SC_LAYER_UNDER_TEXT as that requires multi-phase drawing.


With both of those no selection color is displayed. Clicking off-window 
wipes text from screen.
 


That brings up the next potential issue: what is PHASESDRAW set 
to? SC_PHASES_MULTIPLE is the safest choice and should be used until 
drawing is correct. Once drawing is correct, this may be dialled down 
to SC_PHASES_TWO for performance if needed.


Unknown. I never touch this.

I will be out much of today. When I stopped working on this last night I 
hit the snag that the "older" debian package of CopperSpice appears to need 
a tweak/regression with the RedDiamond build process because CMake couldn't 
find its config file. I vaguely remember this from last year but was too 
tired. 

Without a way to physically turn off inactive selection highlighting there 
is no way to fix this from within Scintilla. I have to roll back 
CopperSpice to a version without the bug. Until their QTextEdit module 
actually implements the same feature the team behind CopperSpice aren't 
going to fix this. If I have to fix it, I will be creating an official fork 
of CopperSpice because they are unresponsive to the users. 

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