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Merged wxRichTextAttr and wxTextAttrEx into wxTextAttr, and added a font table

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to wxRichTextBuffer to reduce wxFont consumption and increase performance.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49108 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2007-10-09 11:20:36 +00:00
parent e97e6073b3
commit 44cc96a80c
46 changed files with 2101 additions and 4010 deletions
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18
docs/latex/wx/richtextoverview.tex
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@@ -2,8 +2,7 @@
{\bf Major classes:} \helpref{wxRichTextCtrl}{wxrichtextctrl}, \helpref{wxRichTextBuffer}{wxrichtextbuffer}, \helpref{wxRichTextEvent}{wxrichtextevent}
{\bf Helper classes:} \helpref{wxRichTextAttr}{wxrichtextattr}, \helpref{wxTextAttrEx}{wxtextattrex},
\helpref{wxRichTextRange}{wxrichtextrange}
{\bf Helper classes:} \helpref{wxTextAttr}{wxtextattr}, \helpref{wxRichTextRange}{wxrichtextrange}
{\bf File handler classes:} \helpref{wxRichTextFileHandler}{wxrichtextfilehandler}, \helpref{wxRichTextHTMLHandler}{wxrichtexthtmlhandler},
\helpref{wxRichTextXMLHandler}{wxrichtextxmlhandler}
@@ -186,7 +185,7 @@ The following code is taken from the sample, and adds text and styles to a rich
tabs.Add(600);
tabs.Add(800);
tabs.Add(1000);
wxTextAttrEx attr;
wxTextAttr attr;
attr.SetFlags(wxTEXT_ATTR_TABS);
attr.SetTabs(tabs);
r.SetDefaultStyle(attr);
@@ -220,14 +219,7 @@ be processed by the control rather than being used for navigation between contro
\subsubsection{wxRichTextCtrl and styles}
Styling attributes are represented by three classes: \helpref{wxTextAttr}{wxtextattr}, \helpref{wxTextAttrEx}{wxtextattrex} and \helpref{wxRichTextAttr}{wxrichtextattr}.
wxTextAttr is shared across all controls that are derived from wxTextCtrlBase and
can store basic character and paragraph attributes. wxTextAttrEx derives
from wxTextAttr and adds some further attributes that are only supported
by wxRichTextCtrl. Finally, wxRichTextAttr is a more efficient version
of wxTextAttrEx that doesn't use a wxFont object and can be used to
query styles more quickly. wxTextAttrEx and wxRichTextAttr are largely
interchangeable and have suitable conversion operators between them.
Styling attributes are represented by \helpref{wxTextAttr}{wxtextattr}.
When setting a style, the flags of the attribute object determine which
attributes are applied. When querying a style, the passed flags are ignored
@@ -348,7 +340,7 @@ always has one such buffer.
The content is represented by a hierarchy of objects, all derived from
wxRichTextObject. An object might be an image, a fragment of text, a paragraph,
or a whole buffer. Objects store a wxTextAttrEx containing style information;
or a whole buffer. Objects store a wxTextAttr containing style information;
a paragraph object can contain both paragraph and character information, but
content objects such as text can only store character information. The final
style displayed in the control or in a printout is a combination of base
@@ -375,7 +367,7 @@ A paragraph of pure text with the same style contains just one further
object, a wxRichTextPlainText object. When styling is applied to part of
this object, the object is decomposed into separate objects, one object
for each different character style. So each object within a paragraph always has
just one wxTextAttrEx object to denote its character style. Of course, this can
just one wxTextAttr object to denote its character style. Of course, this can
lead to fragmentation after a lot of edit operations, potentially leading
to several objects with the same style where just one would do. So
a Defragment function is called when updating the control's display, to ensure that