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| -rw-r--r-- | doc/ScintillaDoc.html | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/doc/ScintillaDoc.html b/doc/ScintillaDoc.html index 80eeb29a3..8d03977d0 100644 --- a/doc/ScintillaDoc.html +++ b/doc/ScintillaDoc.html @@ -1288,8 +1288,6 @@ SCI_SETWRAPMODE(SC_WRAP_NONE or SC_WRAP_WORD) SCI_GETWRAPMODE </pre> <p> - Line wrapping is an experimental feature that currently has - performance and appearence problems. When the wrap mode is set to SC_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 @@ -1298,6 +1296,30 @@ SCI_GETWRAPMODE character that completely fits on the line. The horizontal scroll bar does not appear when wrap mode is on. </p> +<pre> +SCI_SETLAYOUTCACHE(SC_CACHE_NONE or SC_CACHE_CARET or SC_CACHE_PAGE or SC_CACHE_DOCUMENT) +SCI_GETLAYOUTCACHE +</pre> + <p> + Much of the time used by Scintilla 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. + </p> + <p> + SC_CACHE_NONE performs no caching and is the default. + SC_CACHE_CARET caches the layout information for the line containing the + caret. + SC_CACHE_PAGE caches the layout of the visible lines and the caret + line. + SC_CACHE_DOCUMENT caches the layout of the entire document. + </p> <h3> Zooming </h3> |