X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ad9edf45f116c0281b5efcfa0dd7b2fc2073908f..fd495ab3ea1282ddb8bb0cd0fb79fc758ae5fcee:/docs/latex/wx/scrolwin.tex?ds=sidebyside diff --git a/docs/latex/wx/scrolwin.tex b/docs/latex/wx/scrolwin.tex index bdc315b480..e89c1ae6fc 100644 --- a/docs/latex/wx/scrolwin.tex +++ b/docs/latex/wx/scrolwin.tex @@ -14,6 +14,20 @@ If you don't wish to calculate your own scrolling, you must call PrepareDC when within OnDraw, to set the device origin for the device context according to the current scroll position. +A wxScrolledWindow will normally scroll itself and therefore its child windows as well. It +might however be desired to scroll a different window than itself: e.g. when designing a +spreadsheet, you will normally only have to scroll the (usually white) cell area, whereas the +(usually grey) label area will scroll very differently. For this special purpose, you can +call \helpref{SetTargetWindow}{wxscrolledwindowsettargetwindow} which means that pressing +the scrollbars will scroll a different window. + +Note that the underlying system knows nothing about scrolling coordinates, so that all system +functions (mouse events, expose events, refresh calls etc) as well as the position of subwindows +are relative to the "physical" origin of the scrolled window. If the user insert a child window at +position (10,10) and scrolls the window down 100 pixels (moving the child window out of the visible +area), the child window will report a position of (10,-90). + + \wxheading{Derived from} \helpref{wxPanel}{wxpanel}\\ @@ -104,6 +118,12 @@ CalcScrolledPosition(0, 0, \&xx, \&yy) will return 10 in yy. \helpref{CalcUnscrolledPosition}{wxscrolledwindowcalcunscrolledposition} +\pythonnote{The wxPython version of this methods accepts only two +parameters and returns xx and yy as a tuple of values.} + +\perlnote{In wxPerl this method takes two parameters and returns a +2-element list {\tt ( xx, yy )}.} + \membersection{wxScrolledWindow::CalcUnscrolledPosition}\label{wxscrolledwindowcalcunscrolledposition} \constfunc{void}{CalcUnscrolledPosition}{ @@ -121,6 +141,12 @@ CalcUnscrolledPosition(0, 10, \&xx, \&yy) will return 0 in yy. \helpref{CalcScrolledPosition}{wxscrolledwindowcalcscrolledposition} +\pythonnote{The wxPython version of this methods accepts only two +parameters and returns xx and yy as a tuple of values.} + +\perlnote{In wxPerl this method takes two parameters and returns a +2-element list {\tt ( xx, yy )}.} + \membersection{wxScrolledWindow::Create}\label{wxscrolledwindowcreate} \func{bool}{Create}{\param{wxWindow*}{ parent}, \param{wxWindowID }{id = -1},\rtfsp @@ -139,7 +165,9 @@ Enable or disable physical scrolling in the given direction. Physical scrolling is the physical transfer of bits up or down the screen when a scroll event occurs. If the application scrolls by a variable amount (e.g. if there are different font sizes) then physical -scrolling will not work, and you should switch it off. +scrolling will not work, and you should switch it off. Note that you +will have to reposition child windows yourself, if physical scrolling +is disabled. \wxheading{Parameters} @@ -171,6 +199,12 @@ scrolling in that direction. \helpref{wxScrolledWindow::SetScrollbars}{wxscrolledwindowsetscrollbars},\rtfsp \helpref{wxScrolledWindow::GetVirtualSize}{wxscrolledwindowgetvirtualsize} +\pythonnote{The wxPython version of this methods accepts no +parameters and returns a tuple of values for xUnit and yUnit.} + +\perlnote{In wxPerl this method takes no parameters and returns a +2-element list {\tt ( xUnit, yUnit )}.} + \membersection{wxScrolledWindow::GetVirtualSize}\label{wxscrolledwindowgetvirtualsize} \constfunc{void}{GetVirtualSize}{\param{int* }{x}, \param{int* }{y}} @@ -195,6 +229,12 @@ to translate these units to logical units. \helpref{wxScrolledWindow::SetScrollbars}{wxscrolledwindowsetscrollbars},\rtfsp \helpref{wxScrolledWindow::GetScrollPixelsPerUnit}{wxscrolledwindowgetscrollpixelsperunit} +\pythonnote{The wxPython version of this methods accepts no +parameters and returns a tuple of values for x and y.} + +\perlnote{In wxPerl this method takes no parameters and returns a +2-element list {\tt ( x, y )}.} + \membersection{wxScrolledWindow::IsRetained}\label{wxscrolledwindowisretained} \constfunc{bool}{IsRetained}{\void} @@ -237,7 +277,7 @@ void MyWindow::OnEvent(wxMouseEvent& event) \func{virtual void}{OnDraw}{\param{wxDC\& }{dc}} Called by the default paint event handler to allow the application to define -painting behaviour without having to worry about calling +painting behaviour without having to worry about calling \helpref{wxScrolledWindow::PrepareDC}{wxscrolledwindowpreparedc}. Instead of overriding this function you may also just process the paint event @@ -272,7 +312,8 @@ that direction). \func{void}{SetScrollbars}{\param{int}{ pixelsPerUnitX}, \param{int}{ pixelsPerUnitY},\rtfsp \param{int}{ noUnitsX}, \param{int}{ noUnitsY},\rtfsp -\param{int }{xPos = 0}, \param{int}{ yPos = 0}} +\param{int }{xPos = 0}, \param{int}{ yPos = 0},\rtfsp +\param{bool }{noRefresh = FALSE}} Sets up vertical and/or horizontal scrollbars. @@ -290,6 +331,8 @@ Sets up vertical and/or horizontal scrollbars. \docparam{yPos}{Position to initialize the scrollbars in the vertical direction, in scroll units.} +\docparam{noRefresh}{Will not refresh window if TRUE.} + \wxheading{Remarks} The first pair of parameters give the number of pixels per `scroll step', i.e. amount @@ -315,9 +358,16 @@ scroll steps may be variable according to the position in the document, it will necessary to derive a new class from wxWindow, overriding {\bf OnSize} and adjusting the scrollbars appropriately. -\membersection{wxScrolledWindow::ViewStart}\label{wxscrolledwindowviewstart} +\membersection{wxScrolledWindow::SetTargetWindow}\label{wxscrolledwindowsettargetwindow} + +\func{void}{SetTargetWindow}{\param{wxWindow* }{window}} -\constfunc{void}{ViewStart}{\param{int* }{x}, \param{int* }{ y}} +Call this function to tell wxScrolledWindow to perform the actually scrolling on +a different window (not on itself). + +\membersection{wxScrolledWindow::GetViewStart}\label{wxscrolledwindowgetviewstart} + +\constfunc{void}{GetViewStart}{\param{int* }{x}, \param{int* }{ y}} Get the position at which the visible portion of the window starts. @@ -340,3 +390,9 @@ by the number of pixels per scroll increment. \helpref{wxScrolledWindow::SetScrollbars}{wxscrolledwindowsetscrollbars} +\pythonnote{The wxPython version of this methods accepts no +parameters and returns a tuple of values for x and y.} + +\perlnote{In wxPerl this method takes no parameters and returns a +2-element list {\tt ( x, y )}.} +