On 22/10/2013 12:40, Martin wrote:
On 22/10/2013 12:28, Mark Morgan Lloyd wrote:
Is there a painless way to get a column ruler at the top of a
TSynEdit, without having to do something like having multiple
controls in a frame and forcing sideways scrolling to track?
You can write a subclass of SynEdit, similar (but smaller than) to
TIDESynEditor (in ide SourceSynEditor.pas)
using something like (this displays the procedure top hint)
FTopInfoDisplay: TSourceLazSynTopInfoView;
That is reserving one line of the display for whatever you want it to be.
It is some work though....
Or go the full 9 yards: Implement a top/bottom gutter (and submit it
as patch).
Just a note, about optimizing painting. purely optional.
On some widgetset, invalidate always is the minimum enclosure rectangle
for all invalidated parts.
So invalidating a bit of text at the visible bottom of the editor paints
this bit of text (actually the full line)
But invalidating a bit of text at the visible bottom AND a bit of text
(or gutter) on the top, will paint ALL lines inbetween too.
-------------
For that reason the overview gutter (which often invalidates on a
different Y pos, than the rest of synEdit) creates a wincontrol of its
own. This is a child to the SynEdit.
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