[Eric] weird edgecolumn behavior in scintilla

[Phil Thompson]

On Tuesday 28 August 2007, SHY wrote:
> hey everyone,
>
> i decided its time to heavily improve myself in python-gui programming and
> so i started building my own editor/ide for PHP. so far, most of the
> general/basic features are inspired (read: mostly copy-pasted) by eric4 IDE
> as it is too based upon qt4 and scintilla.
>
> but i came across to a weird problem with the scintilla's edgemodes. when i
> set it up to edgeline mode and the edgecolumn is set to 80, the edgeline is
> drawn (assuming the default scintilla/eric settings) at approximately 50th
> character from the left (and 30th character when the lexer is off - aka txt
> files), instead of the expected 80. ive tried to play around with the
> lexers' styles to change fonts (courier new, size 10) and stuff but it
> keeps drawing the line on 50th column.
>
> ive made a non-elegant and non-pragmatic workaround to this, by setting the
> edgecolumn to 128 when the lexer is turned on and 213 when it is off. both
> values approximately match the 80th column for courier-new size 10.
>
> i originally thought that the column length for the edgecolumn value is
> computed from the character width of the particular font, and so that by
> changing the font or its size, the edgecolumn would change appropriately.
> dunno if this is the problem of scintilla (cause the exactly same thing is
> present in eric4 as well) or i just missed some important setting.
>
> this is the code that handles the edgecolumn stuff when the editor is
> launched:
>
> [code]
>         edgeMode = Preferences.getEditor("EdgeMode")
>         edge = QsciScintilla.EdgeMode(edgeMode)
>         self.setEdgeMode(edge)
>         if edgeMode:
>             self.setEdgeColumn(Preferences.getEditor("EdgeColumn"))
>             self.setEdgeColor(Preferences.getEditorColour("Edge"))
>
> [/code]
>
> the EdgeColumn preferences value defaults to 80.
>
> any ideas?

Hopefully fixed in tonight's QScintilla snapshot.

Phil