wxWidgets/user/wxLayout/TODO
Karsten Ballüder a9a96f0a9a slowdown effect
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2450 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-05-13 15:51:44 +00:00

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BUGS
=====================================================================
- dmalloc shows duplicate deletion after merging two lines and
deleting the second half
- word wrap for objects with lots of non-space needs to search in positive
direction if begin of first object is reached
- delete in empty line doesn't always work
- fix initial scrollbar sizes
- fix horiz scrollbar size
TODO
=====================================================================
Adding many lines makes it terribly slow.
Printing produces empty pages only.
Formatting of first text in message in M is broken.
Large images in last line don't get displayed properly.
Taking last line's height as default for next is rubbish,
use "default height" and adjust as necessary.
Selections:
- moving in negative direction doesn't work
- selection state not properly reset, only works once
- selecting non-text objects is strange
wxllist::GetSize() requires extra Layout() call, which should not be
necessary. Find out why this is so.
YES, it is necessary, because the normal drawing only happens within
the visible window.
I must find a way to re-Layout() objects. This is only required after
their sizes change:
- Just mark them as dirty:
- mark current line as dirty when editing it (so width gets recalculated)
- mark all following lines as dirty when changing font settings
- Let Layout() work only on the dirty lines.
!!! GOOD: this can also be used to recalculate the wxLayoutObjectCmds'
fonts! :-)
- searching for text
- moving cursor in non-edit mode
- cursor screen positioning ignores font sizes once again :-(
--> UpdateCursorScreenPos() cannot work as it ignores previous font formatting commands.
Either draw cursor when drawing text, or wait for new wxLayoutObjectCmd to be fully
implemented.
RECENTLY FIXED (?)
- fix(simplify) cursor size calculation
- delete in empty line doesn't work
- fix horiz scrollbar size OK here, a Mahogany problem?
- with a large number of lines, wraps to top of scrolled window
--> check where the problem lies, add a debug function showing all coordinates
- update rectangle (needs support in wxllist and wxWindows)
--> needs a bit of fixing still
some code bits are commented out in wxlwindow.cpp
offset handling seems a bit dodgy, white shadow to top/left of cursor
- replacement of llist in window
- undo
- font optimisations(!)
- occasionally wraps lines wongly (twice) ??
- UNDO
later:
- DragNDrop ... broken in wxGTK at present
- cut&paste ... broken in wxGTK at present, Paste already implemented
- Selections
- More optimisations:
- let each line have a pointer to the last layoutcommand and let that
one only store the settings that changed, then we no longer need to
recalculate all the lines