docs/latex/wx/varhvscrollhelper.tex

   1 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2 %% Name:        varhvscrollhelper.tex
   3 %% Purpose:     wxVarHVScrollHelper Documentation
   4 %% Author:      Bryan Petty
   5 %% Modified by:
   6 %% Created:     2007-04-04
   7 %% RCS-ID:      $Id$
   8 %% Copyright:   (c) 2007 wxWidgets Team
   9 %% License:     wxWindows Licence
  10 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  11
  12 \section{\class{wxVarHVScrollHelper}}\label{wxvarhvscrollhelper}
  13
  14 This class provides functions wrapping the
  15 \helpref{wxVarHScrollHelper}{wxvarhscrollhelper} and
  16 \helpref{wxVarVScrollHelper}{wxvarvscrollhelper} classes, targeted for
  17 scrolling a window in both axis using
  18 \helpref{wxHVScrolledWindow}{wxhvscrolledwindow}. Since this class is also
  19 the join class of the horizontal and vertical scrolling functionality, it
  20 also addresses some wrappers that help avoid the need to specify class scope
  21 in your wxHVScrolledWindow-derived class when using wxVarScrollHelperBase
  22 functionality.
  23
  24 Like all three of it's scroll helper base classes, this class is mostly only
  25 useful to those classes built into wxWidgets deriving from here, and this
  26 documentation is mostly only provided for referencing those functions
  27 provided. You will likely want to derive your window from wxHVScrolledWindow
  28 rather than from here directly.
  29
  30 \wxheading{Derived from}
  31
  32 \helpref{wxVarVScrollHelper}{wxvarvscrollhelper}\\
  33 \helpref{wxVarScrollHelperBase}{wxvarscrollhelperbase}
  34
  35 \helpref{wxVarHScrollHelper}{wxvarhscrollhelper}\\
  36 \helpref{wxVarScrollHelperBase}{wxvarscrollhelperbase}
  37
  38 \wxheading{Include files}
  39
  40 <wx/vscroll.h>
  41
  42 \wxheading{See also}
  43
  44 \helpref{wxHScrolledWindow}{wxhscrolledwindow},
  45 \rtfsp\helpref{wxHVScrolledWindow}{wxhvscrolledwindow},
  46 \rtfsp\helpref{wxVScrolledWindow}{wxvscrolledwindow}
  47
  48 \latexignore{\rtfignore{\wxheading{Members}}}
  49
  50
  51 \membersection{wxVarHVScrollHelper::wxVarHVScrollHelper}\label{wxvarhvscrollhelperwxvarhvscrollhelper}
  52
  53 \func{}{wxVarHVScrollHelper}{\param{wxWindow* }{winToScroll}}
  54
  55 Constructor taking the target window to be scrolled by this helper class.
  56 This will attach scroll event handlers to the target window to catch and
  57 handle scroll events appropriately.
  58
  59
  60 \membersection{wxVarHVScrollHelper::EnablePhysicalScrolling}\label{wxvarhvscrollhelperenablephysicalscrolling}
  61
  62 \func{void}{EnablePhysicalScrolling}{\param{bool }{vscrolling = true}, \param{bool }{hscrolling = true}}
  63
  64 With physical scrolling on (when this is {\tt true}), the device origin is
  65 changed properly when a \rtfsp\helpref{wxPaintDC}{wxpaintdc} is prepared,
  66 children are actually moved and laid out properly, and the contents of the
  67 window (pixels) are actually moved. When this is {\tt false}, you are
  68 responsible for repainting any invalidated areas of the window yourself to
  69 account for the new scroll position.
  70
  71 \wxheading{Parameters}
  72
  73 \docparam{vscrolling}{Specifies if physical scrolling should be turned on when scrolling vertically.}
  74
  75 \docparam{hscrolling}{Specifies if physical scrolling should be turned on when scrolling horizontally.}
  76
  77
  78 \membersection{wxVarHVScrollHelper::GetRowColumnCount}\label{wxvarhvscrollhelpergetrowcolumncount}
  79
  80 \constfunc{wxSize}{GetRowColumnCount}{\void}
  81
  82 Returns the number of columns and rows the target window contains.
  83
  84 \wxheading{See also}
  85
  86 \helpref{SetRowColumnCount()}{wxvarhvscrollhelpersetrowcolumncount}
  87
  88
  89 \membersection{wxVarHVScrollHelper::GetVisibleBegin}\label{wxvarhvscrollhelpergetvisiblebegin}
  90
  91 \constfunc{wxPosition}{GetVisibleBegin}{\void}
  92
  93 Returns the index of the first visible column and row based on the current
  94 scroll position.
  95
  96
  97 \membersection{wxVarHVScrollHelper::GetVisibleEnd}\label{wxvarhvscrollhelpergetvisibleend}
  98
  99 \constfunc{wxPosition}{GetVisibleEnd}{\void}
 100
 101 Returns the index of the last visible column and row based on the scroll
 102 position. This includes any partially visible columns or rows.
 103
 104
 105 \membersection{wxVarHVScrollHelper::VirtualHitTest}\label{wxvarhvscrollhelpervirtualhittest}
 106
 107 \constfunc{wxPosition}{VirtualHitTest}{\param{wxCoord }{x}, \param{wxCoord }{y}}
 108
 109 \constfunc{wxPosition}{VirtualHitTest}{\param{const wxPoint\& }{pos}}
 110
 111 Returns the virtual scroll unit under the device unit given accounting for
 112 scroll position or {\tt wxNOT\_FOUND} (for the row, column, or possibly both
 113 values) if none.
 114
 115
 116 \membersection{wxVarHVScrollHelper::IsVisible}\label{wxvarhvscrollhelperisvisible}
 117
 118 \constfunc{bool}{IsVisible}{\param{size\_t }{row}, \param{size\_t }{column}}
 119
 120 \constfunc{bool}{IsVisible}{\param{const wxPosition\& }{pos}}
 121
 122 Returns {\tt true} if both the given row and column are currently visible
 123 (even if only partially visible) or {\tt false} otherwise.
 124
 125
 126 \membersection{wxVarHVScrollHelper::RefreshRowColumn}\label{wxvarhvscrollhelperrefreshrowcolumn}
 127
 128 \func{virtual void}{RefreshRowColumn}{\param{size\_t }{row}, \param{size\_t }{column}}
 129
 130 \func{virtual void}{RefreshRowColumn}{\param{const wxPosition\& }{pos}}
 131
 132 Triggers a refresh for just the area shared between the given row and column
 133 of the window if it is visible.
 134
 135
 136 \membersection{wxVarHVScrollHelper::RefreshRowsColumns}\label{wxvarhvscrollhelperrefreshrowscolumns}
 137
 138 \func{virtual void}{RefreshRowsColumns}{\param{size\_t }{fromRow}, \param{size\_t }{toRow}, \param{size\_t }{fromColumn}, \param{size\_t }{toColumn}}
 139
 140 \func{virtual void}{RefreshRowsColumns}{\param{const wxPosition\& }{from}, \param{const wxPosition\& }{to}}
 141
 142 Triggers a refresh for the visible area shared between all given rows and
 143 columns (inclusive) of the window. If the target window for both orientations
 144 is the same, the rectangle of cells is refreshed; if the target windows
 145 differ, the entire client size opposite the orientation direction is
 146 refreshed between the specified limits.
 147
 148
 149 \membersection{wxVarHVScrollHelper::ScrollToRowColumn}\label{wxvarhvscrollhelperscrolltorowcolumn}
 150
 151 \func{bool}{ScrollToRowColumn}{\param{size\_t }{row}, \param{size\_t }{column}}
 152
 153 \func{bool}{ScrollToRowColumn}{\param{const wxPosition\& }{pos}}
 154
 155 Scroll to the specified row and column. It will become the first visible row
 156 and column in the window. Returns {\tt true} if we scrolled the window,
 157 {\tt false} if nothing was done.
 158
 159
 160 \membersection{wxVarHVScrollHelper::SetRowColumnCount}\label{wxvarhvscrollhelpersetrowcolumncount}
 161
 162 \func{void}{SetRowColumnCount}{\param{size\_t }{rowCount}, \param{size\_t }{columnCount}}
 163
 164 Set the number of rows and columns the target window will contain. The
 165 derived class must provide the sizes for all rows and columns with indices up
 166 to the ones given here in it's \helpref{OnGetRowHeight()}{wxvarvscrollhelperongetrowheight}
 167 and \helpref{OnGetColumnWidth()}{wxvarhscrollhelperongetcolumnwidth} implementations,
 168 respectively.
 169
 170 \wxheading{See also}
 171
 172 \helpref{GetRowColumnCount()}{wxvarhvscrollhelpergetrowcolumncount}
 173