The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.
 / 
Wx-Scintilla-0.16
River stage one • 1 direct dependent • 1 total dependent
/ share::doc::layout

PyFrame Guide to wxPython

Copyright and License information Home

__ A B C D E F G H I L M P R S T U V W

wxStyledTextCtrl - Layout

  • GetLayoutCache

  • GetWrapMode

  • SetLayoutCache

  • SetWrapMode

Summary:

Automatic line wrapping may be used to cause an automatic line break when the text on a line becomes wider than the window width. This does not affect the content of the line itself, just the display. The wrapping mode is set with SetWrapMode.

The STC maintains an internal layout cache to speed redraws. The SetLayoutCache method is used to control how this feature works.

----

GetLayoutCache()

Returns an integer object with the value of the layout cache control setting.

top

----

GetWrapMode()

Returns an integer object with the value of the wrap mode setting.

top

----

SetLayoutCache(mode)

Much of the time used by the STC is spent on laying out and drawing text. The same text layout calculations may be performed many times even when the data used in these calculations does not change. To avoid these unnecessary calculations in some circumstances, the line layout cache can store the results of the calculations. The cache in invalidated whenever the underlying data, such as the contents or styling of the document changes.

Caching the layout of the whole document has the most effect, making dynamic line wrap as much as 20 times faster but this requires 7 times the memory required by the document contents.

Values for the integer parameter mode:

  • wxSTC_CACHE_NONE performs no caching and is the default.

  • wxSTC_CACHE_CARET caches the layout information for the line containing the caret.

  • wxSTC_CACHE_PAGE caches the layout of the visible lines and the caret line.

  • wxSTC_CACHE_DOCUMENT caches the layout of the entire document.

The return value is None.

top

----

SetWrapMode(mode)

Sets the wrap mode to the value of the integer parameter mode. Possible values: wxSTC_WRAP_NONE (no wrapping) or wxSTC_WRAP_WORD (wrapping). Returns None.

When the wrap mode is set to wxSTC_WRAP_WORD lines wider than the window width are continued on the following lines. Lines are broken after space or tab characters or between runs of different styles. If this is not possible because a word in one style is wider than the window then the break occurs before after the last character that completely fits on the line. The horizontal scroll bar does not appear when wrap mode is on.

top

----