f18eaf2687
vertical directions (slightly modified patch 1671181) git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45330 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
174 lines
7.1 KiB
TeX
174 lines
7.1 KiB
TeX
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%% Name: vscrolledwindow.tex (moved from vscroll.tex)
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%% Purpose: wxVScrolledWindow Documentation
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%% Author: Vadim Zeitlin, Bryan Petty
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%% Modified by:
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%% Created: 2003-05-30, modified 2007-04-04
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%% RCS-ID: $Id$
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%% Copyright: (c) 2003, 2007 wxWidgets Team
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%% License: wxWindows Licence
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\section{\class{wxVScrolledWindow}}\label{wxvscrolledwindow}
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In the name of this class, "V" may stand for "variable" because it can be
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used for scrolling rows of variable heights; "virtual", because it is not
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necessary to know the heights of all rows in advance -- only those which
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are shown on the screen need to be measured; or even "vertical", because
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this class only supports scrolling vertically.
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In any case, this is a generalization of the
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\helpref{wxScrolledWindow}{wxscrolledwindow} class which can be only used when
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all rows have the same heights. It lacks some other wxScrolledWindow features
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however, notably it can't scroll only a rectangle of the window and not its
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entire client area.
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To use this class, you need to derive from it and implement the
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\helpref{OnGetRowHeight()}{wxvarvscrollhelperongetrowheight} pure virtual
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method. You also must call \helpref{SetRowCount}{wxvarvscrollhelpersetrowcount}
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to let the base class know how many rows it should display, but from that
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moment on the scrolling is handled entirely by wxVScrolledWindow. You only
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need to draw the visible part of contents in your {\tt OnPaint()} method as
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usual. You should use \helpref{GetVisibleRowsBegin()}{wxvarvscrollhelpergetvisiblerowsbegin}
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and \helpref{GetVisibleRowsEnd()}{wxvarvscrollhelpergetvisiblerowsend} to
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select the lines to display. Note that the device context origin is not shifted
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so the first visible row always appears at the point $(0, 0)$ in physical as
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well as logical coordinates.
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\wxheading{Derived from}
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\helpref{wxPanel}{wxpanel}\\
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\helpref{wxWindow}{wxwindow}\\
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\helpref{wxEvtHandler}{wxevthandler}\\
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\helpref{wxObject}{wxobject}
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\helpref{wxVarVScrollHelper}{wxvarvscrollhelper}\\
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\helpref{wxVarScrollHelperBase}{wxvarscrollhelperbase}
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\wxheading{Include files}
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<wx/vscroll.h>
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\wxheading{See also}
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\helpref{wxHScrolledWindow}{wxhscrolledwindow},
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\rtfsp\helpref{wxHVScrolledWindow}{wxhvscrolledwindow}
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\latexignore{\rtfignore{\wxheading{Members}}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%% wxVarVScrollLegacyAdapter Compatibility Functions
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%% This section will need to be removed when 2.8 compatibility is removed.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\membersection{wxWidgets 2.6 and 2.8 Compatibility Functions}\label{wxvscrolledwindowbackwardcompatibility}
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The following functions provide backwards compatibility for applications
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originally built using wxVScrolledWindow in 2.6 or 2.8. Originally,
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wxVScrolledWindow referred to scrolling "lines". We now use "units" in
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wxVarScrollHelperBase to avoid implying any orientation (since the functions
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are used for both horizontal and vertical scrolling in derived classes). And
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in the new wxVScrolledWindow and wxHScrolledWindow classes, we refer to them
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as "rows" and "columns", respectively. This is to help clear some confusion
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in not only those classes, but also in wxHVScrolledWindow where functions
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are inherited from both.
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You are encouraged to update any existing code using these function to use
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the new replacements mentioned below, and avoid using these functions for
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any new code as they are deprecated.
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\constfunc{size\_t}{GetFirstVisibleLine}{\void}
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Deprecated for \helpref{GetVisibleRowsBegin()}{wxvarvscrollhelpergetvisiblerowsbegin}.
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\constfunc{size\_t}{GetLastVisibleLine}{\void}
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Deprecated for \helpref{GetVisibleRowsEnd()}{wxvarvscrollhelpergetvisiblerowsend}.
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This function originally had a slight design flaw in that it was possible to
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return \texttt{(size\_t)-1} (ie: a large positive number) if the scroll
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position was 0 and the first line wasn't completely visible.
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\constfunc{size\_t}{GetLineCount}{\void}
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Deprecated for \helpref{GetRowCount()}{wxvarvscrollhelpergetrowcount}.
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\constfunc{virtual wxCoord}{OnGetLineHeight}{\param{size\_t }{line}}
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Deprecated for \helpref{OnGetRowHeight()}{wxvarvscrollhelperongetrowheight}.
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\constfunc{virtual void}{OnGetLinesHint}{\param{size\_t }{lineMin}, \param{size\_t }{lineMax}}
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Deprecated for \helpref{OnGetRowsHeightHint()}{wxvarvscrollhelperongetrowsheighthint}.
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\func{virtual void}{RefreshLine}{\param{size\_t }{line}}
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Deprecated for \helpref{RefreshRow()}{wxvarvscrollhelperrefreshrow}.
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\func{virtual void}{RefreshLines}{\param{size\_t }{from}, \param{size\_t }{to}}
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Deprecated for \helpref{RefreshRows()}{wxvarvscrollhelperrefreshrows}.
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\func{virtual bool}{ScrollLines}{\param{int }{lines}}
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Deprecated for \helpref{ScrollRows()}{wxvarvscrollhelperscrollrows}.
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\func{virtual bool}{ScrollPages}{\param{int }{pages}}
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Deprecated for \helpref{ScrollRowPages()}{wxvarvscrollhelperscrollrowpages}.
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\func{bool}{ScrollToLine}{\param{size\_t }{line}}
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Deprecated for \helpref{ScrollToRow()}{wxvarvscrollhelperscrolltorow}.
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\func{void}{SetLineCount}{\param{size\_t }{count}}
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Deprecated for \helpref{SetRowCount()}{wxvarvscrollhelpersetrowcount}.
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%%%%%%%%%%%%%%%%%%%%%%% END COMPATIBILITY FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\membersection{wxVScrolledWindow::wxVScrolledWindow}\label{wxvscrolledwindowwxvscrolledwindow}
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\func{}{wxVScrolledWindow}{\void}
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Default constructor, you must call \helpref{Create()}{wxvscrolledwindowcreate}
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later.
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\func{}{wxVScrolledWindow}{\param{wxWindow* }{parent}, \param{wxWindowID }{id = wxID\_ANY}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize}, \param{long }{style = 0}, \param{const wxString\& }{name = wxPanelNameStr}}
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This is the normal constructor, no need to call {\tt Create()} after using this one.
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Note that {\tt wxVSCROLL} is always automatically added to our style, there is
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no need to specify it explicitly.
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\wxheading{Parameters}
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\docparam{parent}{The parent window, must not be {\tt NULL}}
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\docparam{id}{The identifier of this window, {\tt wxID\_ANY} by default}
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\docparam{pos}{The initial window position}
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\docparam{size}{The initial window size}
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\docparam{style}{The window style. There are no special style bits defined for
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this class.}
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\docparam{name}{The name for this window; usually not used}
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\membersection{wxVScrolledWindow::Create}\label{wxvscrolledwindowcreate}
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\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID }{id = wxID\_ANY}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize}, \param{long }{style = 0}, \param{const wxString\& }{name = wxPanelNameStr}}
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Same as the \helpref{non-default constuctor}{wxvscrolledwindowwxvscrolledwindow}
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but returns status code: {\tt true} if ok, {\tt false} if the window couldn't
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be created.
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Just as with the constructor above, the {\tt wxVSCROLL} style is always used,
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there is no need to specify it explicitly.
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