X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8fe057828547c22ed7a55350bac2514a80ec4706..9e152a55785098472ca1c0df110ad0a1203f710f:/docs/latex/wx/sizer.tex diff --git a/docs/latex/wx/sizer.tex b/docs/latex/wx/sizer.tex index eeb1bfd70c..bc285bd529 100644 --- a/docs/latex/wx/sizer.tex +++ b/docs/latex/wx/sizer.tex @@ -1,21 +1,41 @@ -% -% automatically generated by HelpGen from -% include\wx\sizer.h at 13/Aug/99 22:27:59 -% - - \section{\class{wxSizer}}\label{wxsizer} - - -wxSizer - +wxSizer is the abstract base class used for laying out subwindows in a window. You +cannot use wxSizer directly; instead, you will have to use one of the sizer +classes derived from it. Currently there are \helpref{wxBoxSizer}{wxboxsizer}, +\helpref{wxStaticBoxSizer}{wxstaticboxsizer}, +\helpref{wxNotebookSizer}{wxnotebooksizer}, \helpref{wxGridSizer}{wxgridsizer} +\helpref{wxFlexGridSizer}{wxflexgridsizer} and \helpref{wxGridBagSizer}{wxgridbagsizer}. + +The layout algorithm used by sizers in wxWidgets is closely related to layout +in other GUI toolkits, such as Java's AWT, the GTK toolkit or the Qt toolkit. It is +based upon the idea of the individual subwindows reporting their minimal required +size and their ability to get stretched if the size of the parent window has changed. +This will most often mean, that the programmer does not set the original size of +a dialog in the beginning, rather the dialog will assigned a sizer and this sizer +will be queried about the recommended size. The sizer in turn will query its +children, which can be normal windows, empty space or other sizers, so that +a hierarchy of sizers can be constructed. Note that wxSizer does not derive from wxWindow +and thus do not interfere with tab ordering and requires very little resources compared +to a real window on screen. + +What makes sizers so well fitted for use in wxWidgets is the fact that every control +reports its own minimal size and the algorithm can handle differences in font sizes +or different window (dialog item) sizes on different platforms without problems. If e.g. +the standard font as well as the overall design of Motif widgets requires more space than +on Windows, the initial dialog size will automatically be bigger on Motif than on Windows. + +\pythonnote{If you wish to create a sizer class in wxPython you should +derive the class from {\tt wxPySizer} in order to get Python-aware +capabilities for the various virtual methods.} \wxheading{Derived from} \helpref{wxObject}{wxobject} -\wxheading{Data structures} +\wxheading{See also} + +\helpref{Sizer overview}{sizeroverview} \latexignore{\rtfignore{\wxheading{Members}}} @@ -24,72 +44,313 @@ wxSizer \func{}{wxSizer}{\void} +The constructor. Note that wxSizer is an abstract base class and may not +be instantiated. + \membersection{wxSizer::\destruct{wxSizer}}\label{wxsizerdtor} \func{}{\destruct{wxSizer}}{\void} +The destructor. + \membersection{wxSizer::Add}\label{wxsizeradd} -\func{void}{Add}{\param{wxWindow* }{window}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}} +\func{void}{Add}{\param{wxWindow* }{window}, \param{int }{proportion = 0},\param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} + +\func{void}{Add}{\param{wxSizer* }{sizer}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} + +\func{void}{Add}{\param{int }{width}, \param{int }{height}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} + +Appends a child to the sizer. wxSizer itself is an abstract class, but the parameters are +equivalent in the derived classes that you will instantiate to use it so they are described +here: + +\docparam{window}{The window to be added to the sizer. Its initial size (either set explicitly by the +user or calculated internally when using wxDefaultSize) is interpreted as the minimal and in many +cases also the initial size. This is particularly useful in connection with \helpref{SetSizeHints}{wxsizersetsizehints}.} + +\docparam{sizer}{The (child-)sizer to be added to the sizer. This allows placing a child sizer in a +sizer and thus to create hierarchies of sizers (typically a vertical box as the top sizer and several +horizontal boxes on the level beneath).} + +\docparam{width and height}{The dimension of a spacer to be added to the sizer. Adding spacers to sizers +gives more flexibility in the design of dialogs; imagine for example a horizontal box with two buttons at the +bottom of a dialog: you might want to insert a space between the two buttons and make that space stretchable +using the {\it proportion} flag and the result will be that the left button will be aligned with the left +side of the dialog and the right button with the right side - the space in between will shrink and grow with +the dialog.} + +\docparam{proportion}{Although the meaning of this parameter is undefined in wxSizer, it is used in wxBoxSizer +to indicate if a child of a sizer can change its size in the main orientation of the wxBoxSizer - where +0 stands for not changeable and a value of more than zero is interpreted relative to the value of other +children of the same wxBoxSizer. For example, you might have a horizontal wxBoxSizer with three children, two +of which are supposed to change their size with the sizer. Then the two stretchable windows would get a +value of 1 each to make them grow and shrink equally with the sizer's horizontal dimension.} + +\docparam{flag}{This parameter can be used to set a number of flags +which can be combined using the binary OR operator |. Two main +behaviours are defined using these flags. One is the border around a +window: the {\it border} parameter determines the border width whereas +the flags given here determine which side(s) of the item that the +border will be added. The other flags determine how the sizer item +behaves when the space allotted to the sizer changes, and is somewhat +dependent on the specific kind of sizer used. + +\twocolwidtha{5cm}% +\begin{twocollist}\itemsep=0pt +\twocolitem{\windowstyle{wxTOP}\\ +\windowstyle{wxBOTTOM}\\ +\windowstyle{wxLEFT}\\ +\windowstyle{wxRIGHT}\\ +\windowstyle{wxALL}}{These flags are used to specify which side(s) of + the sizer item the {\it border} width will apply to. } + +\twocolitem{\windowstyle{wxEXPAND}}{The item will be expanded to fill +the space assigned to the item.} +\twocolitem{\windowstyle{wxSHAPED}}{The item will be expanded as much +as possible while also maintaining its aspect ratio} +\twocolitem{\windowstyle{wxFIXED\_MINSIZE}}{Normally wxSizers will use + \helpref{GetAdjustedBestSize}{wxwindowgetadjustedbestsize} to + determin what the minimal size of window items should be, and will + use that size to calculate the layout. This allows layouts to + adjust when an item changes and it's {\it best size} becomes + different. If you would rather have a window item stay the size it + started with then use wxFIXED\_MINSIZE.} +\twocolitem{\windowstyle{wxALIGN\_CENTER}\\ +\windowstyle{wxALIGN\_LEFT}\\ +\windowstyle{wxALIGN\_RIGHT}\\ +\windowstyle{wxALIGN\_TOP}\\ +\windowstyle{wxALIGN\_BOTTOM}\\ +\windowstyle{wxALIGN\_CENTER\_VERTICAL}\\ +\windowstyle{wxALIGN\_CENTER\_HORIZONTAL}}{The wxALIGN flags allow you to + specify the alignment of the item within the space allotted to it by + the sizer, ajusted for the border if any.} +\end{twocollist} +} + +\docparam{border}{Determines the border width, if the {\it flag} + parameter is set to include any border flag.} + +\docparam{userData}{Allows an extra object to be attached to the sizer +item, for use in derived classes when sizing information is more +complex than the {\it proportion} and {\it flag} will allow for.} -\membersection{wxSizer::Add}\label{wxsizeradd} +\membersection{wxSizer::CalcMin}\label{wxsizercalcmin} + +\func{wxSize}{CalcMin}{\void} -\func{void}{Add}{\param{wxSizer* }{sizer}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}} +This method is abstract and has to be overwritten by any derived class. +Here, the sizer will do the actual calculation of its children minimal sizes. -\membersection{wxSizer::Add}\label{wxsizeradd} +\membersection{wxSizer::Detach}\label{wxsizerdetach} -\func{void}{Add}{\param{int }{width}, \param{int }{height}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}} +\func{bool}{Detach}{\param{wxWindow* }{window}} +\func{bool}{Detach}{\param{wxSizer* }{sizer}} -\membersection{wxSizer::SetDimension}\label{wxsizersetdimension} +\func{bool}{Detach}{\param{size\_t }{index}} -\func{void}{SetDimension}{\param{int }{x}, \param{int }{y}, \param{int }{width}, \param{int }{height}} +Detach a child from the sizer without destroying it. {\it window} is the window to be +detached, {\it sizer} is the equivalent sizer and {\it index} is the position of +the child in the sizer, typically 0 for the first item. This method does not +cause any layout or resizing to take place, call \helpref{wxSizer::Layout}{wxsizerlayout} +to update the layout "on screen" after detaching a child from the sizer. + +Returns true if the child item was found and detached, false otherwise. + +\wxheading{See also} + +\helpref{wxSizer::Remove}{wxsizerremove} + + +\membersection{wxSizer::Fit}\label{wxsizerfit} + +\func{wxSize}{Fit}{\param{wxWindow* }{window}} + +Tell the sizer to resize the {\it window} to match the sizer's minimal size. This +is commonly done in the constructor of the window itself, see sample in the description +of \helpref{wxBoxSizer}{wxboxsizer}. Returns the new size. + +For a top level window this is the total window size, not client size. + + +\membersection{wxSizer::FitInside}\label{wxsizerfitinside} + +\func{void}{FitInside}{\param{wxWindow* }{window}} + +Tell the sizer to resize the virtual size of the {\it window} to match the sizer's +minimal size. This will not alter the on screen size of the window, but may cause +the addition/removal/alteration of scrollbars required to view the virtual area in +windows which manage it. + +\wxheading{See also} + +\helpref{wxScrolledWindow::SetScrollbars}{wxscrolledwindowsetscrollbars},\rtfsp +\helpref{wxSizer::SetVirtualSizeHints}{wxsizersetvirtualsizehints} \membersection{wxSizer::GetSize}\label{wxsizergetsize} \func{wxSize}{GetSize}{\void} +Returns the current size of the sizer. + \membersection{wxSizer::GetPosition}\label{wxsizergetposition} \func{wxPoint}{GetPosition}{\void} +Returns the current position of the sizer. + \membersection{wxSizer::GetMinSize}\label{wxsizergetminsize} \func{wxSize}{GetMinSize}{\void} +Returns the minimal size of the sizer. This is either the combined minimal +size of all the children and their borders or the minimal size set by +\helpref{SetMinSize}{wxsizersetminsize}, depending on which is bigger. -\membersection{wxSizer::RecalcSizes}\label{wxsizerrecalcsizes} -\func{void}{RecalcSizes}{\void} +\membersection{wxSizer::Insert}\label{wxsizerinsert} +\func{void}{Insert}{\param{size\_t }{index}, \param{wxWindow* }{window}, \param{int }{proportion = 0},\param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} -\membersection{wxSizer::CalcMin}\label{wxsizercalcmin} +\func{void}{Insert}{\param{size\_t }{index}, \param{wxSizer* }{sizer}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} -\func{wxSize}{CalcMin}{\void} +\func{void}{Insert}{\param{size\_t }{index}, \param{int }{width}, \param{int }{height}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} + +Insert a child into the sizer before any existing item at {\it index}. + +\docparam{index}{The position this child should assume in the sizer.} + +See \helpref{wxSizer::Add}{wxsizeradd} for the meaning of the other parameters. \membersection{wxSizer::Layout}\label{wxsizerlayout} \func{void}{Layout}{\void} +Call this to force layout of the children anew, e.g. after having added a child +to or removed a child (window, other sizer or space) from the sizer while keeping +the current dimension. -\membersection{wxSizer::Fit}\label{wxsizerfit} -\func{void}{Fit}{\param{wxWindow* }{window}} +\membersection{wxSizer::Prepend}\label{wxsizerprepend} + +\func{void}{Prepend}{\param{wxWindow* }{window}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} + +\func{void}{Prepend}{\param{wxSizer* }{sizer}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}} + +\func{void}{Prepend}{\param{int }{width}, \param{int }{height}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border= 0}, \param{wxObject* }{userData = NULL}} + +Same as \helpref{wxSizer::Add}{wxsizeradd}, but prepends the items to the beginning of the +list of items (windows, subsizers or spaces) owned by this sizer. + + +\membersection{wxSizer::RecalcSizes}\label{wxsizerrecalcsizes} + +\func{void}{RecalcSizes}{\void} + +This method is abstract and has to be overwritten by any derived class. +Here, the sizer will do the actual calculation of its children's positions +and sizes. + + +\membersection{wxSizer::Remove}\label{wxsizerremove} + +\func{bool}{Remove}{\param{wxWindow* }{window}} + +\func{bool}{Remove}{\param{wxSizer* }{sizer}} + +\func{bool}{Remove}{\param{size\_t }{index}} + +Removes a child from the sizer and destroys it. {\it sizer} is the wxSizer to be removed, +{\it index} is the position of the child in the sizer, typically 0 for the first item. +This method does not cause any layout or resizing to take place, call +\helpref{wxSizer::Layout}{wxsizerlayout} to update the layout "on screen" after removing a +child from the sizer. + +{\bf NB:} The method taking a wxWindow* parameter is deprecated. For historical reasons +it does not destroy the window as would usually be expected from Remove. You should use +\helpref{wxSizer::Detach}{wxsizerdetach} in new code instead. There is currently no wxSizer +method that will both detach and destroy a wxWindow item. + +Returns true if the child item was found and removed, false otherwise. + + +\membersection{wxSizer::SetDimension}\label{wxsizersetdimension} + +\func{void}{SetDimension}{\param{int }{x}, \param{int }{y}, \param{int }{width}, \param{int }{height}} + +Call this to force the sizer to take the given dimension and thus force the items owned +by the sizer to resize themselves according to the rules defined by the parameter in the +\helpref{Add}{wxsizeradd} and \helpref{Prepend}{wxsizerprepend} methods. + + +\membersection{wxSizer::SetMinSize}\label{wxsizersetminsize} + +\func{void}{SetMinSize}{\param{int }{width}, \param{int }{height}} + +\func{void}{SetMinSize}{\param{wxSize }{size}} + +Call this to give the sizer a minimal size. Normally, the sizer will calculate its +minimal size based purely on how much space its children need. After calling this +method \helpref{GetMinSize}{wxsizergetminsize} will return either the minimal size +as requested by its children or the minimal size set here, depending on which is +bigger. + + +\membersection{wxSizer::SetItemMinSize}\label{wxsizersetitemminsize} + +\func{void}{SetItemMinSize}{\param{wxWindow* }{window}, \param{int}{ width}, \param{int}{ height}} + +\func{void}{SetItemMinSize}{\param{wxSizer* }{sizer}, \param{int}{ width}, \param{int}{ height}} + +\func{void}{SetItemMinSize}{\param{size\_t }{index}, \param{int}{ width}, \param{int}{ height}} + +Set an item's minimum size by window, sizer, or position. The item will be found recursively +in the sizer's descendants. This function enables an application to set the size of an item +after initial creation. \membersection{wxSizer::SetSizeHints}\label{wxsizersetsizehints} \func{void}{SetSizeHints}{\param{wxWindow* }{window}} +Tell the sizer to set (and \helpref{Fit}{wxsizerfit}) the minimal size of the {\it window} to +match the sizer's minimal size. This is commonly done in the constructor of the window itself, +see sample in the description of \helpref{wxBoxSizer}{wxboxsizer} if the window is resizable +(as are many dialogs under Unix and frames on probably all platforms). + + +\membersection{wxSizer::SetVirtualSizeHints}\label{wxsizersetvirtualsizehints} + +\func{void}{SetVirtualSizeHints}{\param{wxWindow* }{window}} + +Tell the sizer to set the minimal size of the {\it window} virtual area to match the sizer's +minimal size. For windows with managed scrollbars this will set them appropriately. + +\wxheading{See also} + +\helpref{wxScrolledWindow::SetScrollbars}{wxscrolledwindowsetscrollbars} + + +\membersection{wxSizer::Show}\label{wxsizershow} + +\func{void}{Show}{\param{wxWindow* }{window}, \param{bool }{show = true}} + +\func{void}{Show}{\param{wxSizer* }{sizer}, \param{bool }{show = true}} + +\func{void}{Show}{\param{size\_t }{index}, \param{bool }{show = true}} + +Shows or hides the {\it window}, {\it sizer}, or item at {\it index}. +To make a sizer item disappear or reappear, use Show() followed by Layout(). -\membersection{wxSizer::GetMinWindowSize}\label{wxsizergetminwindowsize} +Note that this only works with wxBoxSizer and wxFlexGridSizer, since they +are the only two sizer classes that can size rows/columns independently. -\func{wxSize}{GetMinWindowSize}{\param{wxWindow* }{window} \ No newline at end of file