cheng/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
a903585074
wxWidgets/include/wx/window.h

1312 lines
47 KiB
C++
Raw Blame History

///////////////////////////////////////////////////////////////////////////////
// Name: wx/window.h
// Purpose: wxWindowBase class - the interface of wxWindow
// Author: Vadim Zeitlin
// Modified by: Ron Lee
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) wxWindows team
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_WINDOW_H_BASE_
#define _WX_WINDOW_H_BASE_
#if defined(__GNUG__) && !defined(__APPLE__)
#pragma interface "windowbase.h"
#endif
// ----------------------------------------------------------------------------
// headers which we must include here
// ----------------------------------------------------------------------------
#include "wx/event.h" // the base class
#include "wx/list.h" // defines wxWindowList
#include "wx/cursor.h" // we have member variables of these classes
#include "wx/font.h" // so we can't do without them
#include "wx/colour.h"
#include "wx/region.h"
#include "wx/utils.h"
#include "wx/validate.h" // for wxDefaultValidator (always include it)
#if wxUSE_PALETTE
#include "wx/palette.h"
#endif // wxUSE_PALETTE
#if wxUSE_ACCEL
#include "wx/accel.h"
#endif // wxUSE_ACCEL
#if wxUSE_ACCESSIBILITY
#include "wx/access.h"
#endif
// when building wxUniv/Foo we don't want the code for native menu use to be
// compiled in - it should only be used when building real wxFoo
#ifdef __WXUNIVERSAL__
#define wxUSE_MENUS_NATIVE 0
#else // __WXMSW__
#define wxUSE_MENUS_NATIVE wxUSE_MENUS
#endif // __WXUNIVERSAL__/__WXMSW__
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxCaret;
class WXDLLEXPORT wxControl;
class WXDLLEXPORT wxCursor;
class WXDLLEXPORT wxDC;
class WXDLLEXPORT wxDropTarget;
class WXDLLEXPORT wxItemResource;
class WXDLLEXPORT wxLayoutConstraints;
class WXDLLEXPORT wxResourceTable;
class WXDLLEXPORT wxSizer;
class WXDLLEXPORT wxToolTip;
class WXDLLEXPORT wxWindowBase;
class WXDLLEXPORT wxWindow;
#if wxUSE_ACCESSIBILITY
class WXDLLEXPORT wxAccessible;
#endif
// ----------------------------------------------------------------------------
// (pseudo)template list classes
// ----------------------------------------------------------------------------
WX_DECLARE_LIST_3(wxWindow, wxWindowBase, wxWindowList, wxWindowListNode, class WXDLLEXPORT);
// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------
WXDLLEXPORT_DATA(extern wxWindowList) wxTopLevelWindows;
// ----------------------------------------------------------------------------
// wxWindowBase is the base class for all GUI controls/widgets, this is the public
// interface of this class.
//
// Event handler: windows have themselves as their event handlers by default,
// but their event handlers could be set to another object entirely. This
// separation can reduce the amount of derivation required, and allow
// alteration of a window's functionality (e.g. by a resource editor that
// temporarily switches event handlers).
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxWindowBase : public wxEvtHandler
{
public:
// creating the window
// -------------------
// default ctor
wxWindowBase() { InitBase(); }
// pseudo ctor (can't be virtual, called from ctor)
bool CreateBase(wxWindowBase *parent,
wxWindowID winid,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0,
const wxValidator& validator = wxDefaultValidator,
const wxString& name = wxPanelNameStr);
virtual ~wxWindowBase();
// deleting the window
// -------------------
// ask the window to close itself, return TRUE if the event handler
// honoured our request
bool Close( bool force = FALSE );
// the following functions delete the C++ objects (the window itself
// or its children) as well as the GUI windows and normally should
// never be used directly
// delete window unconditionally (dangerous!), returns TRUE if ok
virtual bool Destroy();
// delete all children of this window, returns TRUE if ok
bool DestroyChildren();
// is the window being deleted?
bool IsBeingDeleted() const { return m_isBeingDeleted; }
// window attributes
// -----------------
// NB: in future versions of wxWindows Set/GetTitle() will only work
// with the top level windows (such as dialogs and frames) and
// Set/GetLabel() only with the other ones (i.e. all controls).
// the title (or label, see below) of the window: the text which the
// window shows
virtual void SetTitle( const wxString& WXUNUSED(title) ) {}
virtual wxString GetTitle() const { return wxEmptyString; }
// label is just the same as the title (but for, e.g., buttons it
// makes more sense to speak about labels)
virtual void SetLabel(const wxString& label) { SetTitle(label); }
virtual wxString GetLabel() const { return GetTitle(); }
// the window name is used for ressource setting in X, it is not the
// same as the window title/label
virtual void SetName( const wxString &name ) { m_windowName = name; }
virtual wxString GetName() const { return m_windowName; }
// window id uniquely identifies the window among its siblings unless
// it is -1 which means "don't care"
void SetId( wxWindowID winid ) { m_windowId = winid; }
wxWindowID GetId() const { return m_windowId; }
// generate a control id for the controls which were not given one by
// user
static int NewControlId() { return --ms_lastControlId; }
// get the id of the control following the one with the given
// (autogenerated) id
static int NextControlId(int winid) { return winid - 1; }
// get the id of the control preceding the one with the given
// (autogenerated) id
static int PrevControlId(int winid) { return winid + 1; }
// moving/resizing
// ---------------
// set the window size and/or position
void SetSize( int x, int y, int width, int height,
int sizeFlags = wxSIZE_AUTO )
{ DoSetSize(x, y, width, height, sizeFlags); }
void SetSize( int width, int height )
{ DoSetSize( -1, -1, width, height, wxSIZE_USE_EXISTING ); }
void SetSize( const wxSize& size )
{ SetSize( size.x, size.y); }
void SetSize(const wxRect& rect, int sizeFlags = wxSIZE_AUTO)
{ DoSetSize(rect.x, rect.y, rect.width, rect.height, sizeFlags); }
void Move(int x, int y, int flags = wxSIZE_USE_EXISTING)
{ DoSetSize(x, y, -1, -1, flags); }
void Move(const wxPoint& pt, int flags = wxSIZE_USE_EXISTING)
{ Move(pt.x, pt.y, flags); }
// Z-order
virtual void Raise() = 0;
virtual void Lower() = 0;
// client size is the size of area available for subwindows
void SetClientSize( int width, int height )
{ DoSetClientSize(width, height); }
void SetClientSize( const wxSize& size )
{ DoSetClientSize(size.x, size.y); }
void SetClientSize(const wxRect& rect)
{ SetClientSize( rect.width, rect.height ); }
// get the window position and/or size (pointers may be NULL)
void GetPosition( int *x, int *y ) const { DoGetPosition(x, y); }
wxPoint GetPosition() const
{
int w, h;
DoGetPosition(&w, &h);
return wxPoint(w, h);
}
void GetSize( int *w, int *h ) const { DoGetSize(w, h); }
wxSize GetSize() const
{
int w, h;
DoGetSize(& w, & h);
return wxSize(w, h);
}
wxRect GetRect() const
{
int x, y, w, h;
GetPosition(& x, & y);
GetSize(& w, & h);
return wxRect(x, y, w, h);
}
void GetClientSize( int *w, int *h ) const { DoGetClientSize(w, h); }
wxSize GetClientSize() const
{
int w, h;
DoGetClientSize(& w, & h);
return wxSize(w, h);
}
// get the origin of the client area of the window relative to the
// window top left corner (the client area may be shifted because of
// the borders, scrollbars, other decorations...)
virtual wxPoint GetClientAreaOrigin() const;
// get the client rectangle in window (i.e. client) coordinates
wxRect GetClientRect() const
{
return wxRect(GetClientAreaOrigin(), GetClientSize());
}
// get the size best suited for the window (in fact, minimal
// acceptable size using which it will still look "nice")
wxSize GetBestSize() const { return DoGetBestSize(); }
void GetBestSize(int *w, int *h) const
{
wxSize s = DoGetBestSize();
if ( w )
*w = s.x;
if ( h )
*h = s.y;
}
// There are times (and windows) where 'Best' size and 'Min' size
// are vastly out of sync. This should be remedied somehow, but in
// the meantime, this method will return the larger of BestSize
// (the window's smallest legible size), and any user specified
// MinSize hint.
wxSize GetAdjustedBestSize() const
{
wxSize s( DoGetBestSize() );
return wxSize( wxMax( s.x, GetMinWidth() ), wxMax( s.y, GetMinHeight() ) );
}
// the generic centre function - centers the window on parent by`
// default or on screen if it doesn't have parent or
// wxCENTER_ON_SCREEN flag is given
void Centre( int direction = wxBOTH );
void Center( int direction = wxBOTH ) { Centre(direction); }
// centre on screen (only works for top level windows)
void CentreOnScreen(int dir = wxBOTH) { Centre(dir | wxCENTER_ON_SCREEN); }
void CenterOnScreen(int dir = wxBOTH) { CentreOnScreen(dir); }
// centre with respect to the the parent window
void CentreOnParent(int dir = wxBOTH) { Centre(dir | wxCENTER_FRAME); }
void CenterOnParent(int dir = wxBOTH) { CentreOnParent(dir); }
// set window size to wrap around its children
virtual void Fit();
// set virtual size to satisfy children
virtual void FitInside();
// set min/max size of the window
virtual void SetSizeHints( int minW, int minH,
int maxW = -1, int maxH = -1,
int incW = -1, int incH = -1 );
virtual void SetVirtualSizeHints( int minW, int minH,
int maxW = -1, int maxH = -1 );
virtual int GetMinWidth() const { return m_minWidth; }
virtual int GetMinHeight() const { return m_minHeight; }
int GetMaxWidth() const { return m_maxWidth; }
int GetMaxHeight() const { return m_maxHeight; }
// Override this method to control the values given to Sizers etc.
virtual wxSize GetMaxSize() const { return wxSize( m_maxWidth, m_maxHeight ); }
// Methods for accessing the virtual size of a window. For most
// windows this is just the client area of the window, but for
// some like scrolled windows it is more or less independent of
// the screen window size. You may override the DoXXXVirtual
// methods below for classes where that is is the case.
void SetVirtualSize( const wxSize &size ) { DoSetVirtualSize( size.x, size.y ); }
void SetVirtualSize( int x, int y ) { DoSetVirtualSize( x, y ); }
wxSize GetVirtualSize() const { return DoGetVirtualSize(); }
void GetVirtualSize( int *x, int *y ) const
{
wxSize s( DoGetVirtualSize() );
if( x )
*x = s.GetWidth();
if( y )
*y = s.GetHeight();
}
// Override these methods for windows that have a virtual size
// independent of their client size. eg. the virtual area of a
// wxScrolledWindow. Default is to alias VirtualSize to ClientSize.
virtual void DoSetVirtualSize( int x, int y );
virtual wxSize DoGetVirtualSize() const; // { return m_virtualSize; }
// Return the largest of ClientSize and BestSize (as determined
// by a sizer, interior children, or other means)
virtual wxSize GetBestVirtualSize() const
{
wxSize client( GetClientSize() );
wxSize best( GetBestSize() );
return wxSize( wxMax( client.x, best.x ), wxMax( client.y, best.y ) );
}
// window state
// ------------
// returns TRUE if window was shown/hidden, FALSE if the nothing was
// done (window was already shown/hidden)
virtual bool Show( bool show = TRUE );
bool Hide() { return Show(FALSE); }
// returns TRUE if window was enabled/disabled, FALSE if nothing done
virtual bool Enable( bool enable = TRUE );
bool Disable() { return Enable(FALSE); }
bool IsShown() const { return m_isShown; }
bool IsEnabled() const { return m_isEnabled; }
// get/set window style (setting style won't update the window and so
// is only useful for internal usage)
virtual void SetWindowStyleFlag( long style ) { m_windowStyle = style; }
virtual long GetWindowStyleFlag() const { return m_windowStyle; }
// just some (somewhat shorter) synonims
void SetWindowStyle( long style ) { SetWindowStyleFlag(style); }
long GetWindowStyle() const { return GetWindowStyleFlag(); }
bool HasFlag(int flag) const { return (m_windowStyle & flag) != 0; }
virtual bool IsRetained() const { return HasFlag(wxRETAINED); }
// extra style: the less often used style bits which can't be set with
// SetWindowStyleFlag()
virtual void SetExtraStyle(long exStyle) { m_exStyle = exStyle; }
long GetExtraStyle() const { return m_exStyle; }
// make the window modal (all other windows unresponsive)
virtual void MakeModal(bool modal = TRUE);
virtual void SetThemeEnabled(bool enableTheme) { m_themeEnabled = enableTheme; }
virtual bool GetThemeEnabled() const { return m_themeEnabled; }
// focus and keyboard handling
// ---------------------------
// set focus to this window
virtual void SetFocus() = 0;
// set focus to this window as the result of a keyboard action
virtual void SetFocusFromKbd() { SetFocus(); }
// return the window which currently has the focus or NULL
static wxWindow *FindFocus() /* = 0: implement in derived classes */;
// can this window have focus?
virtual bool AcceptsFocus() const { return IsShown() && IsEnabled(); }
// can this window be given focus by keyboard navigation? if not, the
// only way to give it focus (provided it accepts it at all) is to
// click it
virtual bool AcceptsFocusFromKeyboard() const { return AcceptsFocus(); }
// NB: these methods really don't belong here but with the current
// class hierarchy there is no other place for them :-(
// get the default child of this parent, i.e. the one which is
// activated by pressing <Enter>
virtual wxWindow *GetDefaultItem() const { return NULL; }
// set this child as default, return the old default
virtual wxWindow *SetDefaultItem(wxWindow * WXUNUSED(child))
{ return NULL; }
// set this child as temporary default
virtual void SetTmpDefaultItem(wxWindow * WXUNUSED(win)) { }
// parent/children relations
// -------------------------
// get the list of children
const wxWindowList& GetChildren() const { return m_children; }
wxWindowList& GetChildren() { return m_children; }
// get the parent or the parent of the parent
wxWindow *GetParent() const { return m_parent; }
inline wxWindow *GetGrandParent() const;
// is this window a top level one?
virtual bool IsTopLevel() const;
// it doesn't really change parent, use ReParent() instead
void SetParent( wxWindowBase *parent ) { m_parent = (wxWindow *)parent; }
// change the real parent of this window, return TRUE if the parent
// was changed, FALSE otherwise (error or newParent == oldParent)
virtual bool Reparent( wxWindowBase *newParent );
// implementation mostly
virtual void AddChild( wxWindowBase *child );
virtual void RemoveChild( wxWindowBase *child );
// looking for windows
// -------------------
// find window among the descendants of this one either by id or by
// name (return NULL if not found)
wxWindow *FindWindow( long winid );
wxWindow *FindWindow( const wxString& name );
// Find a window among any window (all return NULL if not found)
static wxWindow *FindWindowById( long winid, const wxWindow *parent = NULL );
static wxWindow *FindWindowByName( const wxString& name,
const wxWindow *parent = NULL );
static wxWindow *FindWindowByLabel( const wxString& label,
const wxWindow *parent = NULL );
// event handler stuff
// -------------------
// get the current event handler
wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
// replace the event handler (allows to completely subclass the
// window)
void SetEventHandler( wxEvtHandler *handler ) { m_eventHandler = handler; }
// push/pop event handler: allows to chain a custom event handler to
// alreasy existing ones
void PushEventHandler( wxEvtHandler *handler );
wxEvtHandler *PopEventHandler( bool deleteHandler = FALSE );
// find the given handler in the event handler chain and remove (but
// not delete) it from the event handler chain, return TRUE if it was
// found and FALSE otherwise (this also results in an assert failure so
// this function should only be called when the handler is supposed to
// be there)
bool RemoveEventHandler(wxEvtHandler *handler);
// validators
// ----------
#if wxUSE_VALIDATORS
// a window may have an associated validator which is used to control
// user input
virtual void SetValidator( const wxValidator &validator );
virtual wxValidator *GetValidator() { return m_windowValidator; }
#endif // wxUSE_VALIDATORS
// dialog oriented functions
// -------------------------
// validate the correctness of input, return TRUE if ok
virtual bool Validate();
// transfer data between internal and GUI representations
virtual bool TransferDataToWindow();
virtual bool TransferDataFromWindow();
virtual void InitDialog();
#if wxUSE_ACCEL
// accelerators
// ------------
virtual void SetAcceleratorTable( const wxAcceleratorTable& accel )
{ m_acceleratorTable = accel; }
wxAcceleratorTable *GetAcceleratorTable()
{ return &m_acceleratorTable; }
#endif // wxUSE_ACCEL
// dialog units translations
// -------------------------
wxPoint ConvertPixelsToDialog( const wxPoint& pt );
wxPoint ConvertDialogToPixels( const wxPoint& pt );
wxSize ConvertPixelsToDialog( const wxSize& sz )
{
wxPoint pt(ConvertPixelsToDialog(wxPoint(sz.x, sz.y)));
return wxSize(pt.x, pt.y);
}
wxSize ConvertDialogToPixels( const wxSize& sz )
{
wxPoint pt(ConvertDialogToPixels(wxPoint(sz.x, sz.y)));
return wxSize(pt.x, pt.y);
}
// mouse functions
// ---------------
// move the mouse to the specified position
virtual void WarpPointer(int x, int y) = 0;
// start or end mouse capture, these functions maintain the stack of
// windows having captured the mouse and after calling ReleaseMouse()
// the mouse is not released but returns to the window which had had
// captured it previously (if any)
void CaptureMouse();
void ReleaseMouse();
// get the window which currently captures the mouse or NULL
static wxWindow *GetCapture();
// does this window have the capture?
virtual bool HasCapture() const
{ return (wxWindow *)this == GetCapture(); }
// painting the window
// -------------------
// mark the specified rectangle (or the whole window) as "dirty" so it
// will be repainted
virtual void Refresh( bool eraseBackground = TRUE,
const wxRect *rect = (const wxRect *) NULL ) = 0;
// a less awkward wrapper for Refresh
void RefreshRect(const wxRect& rect) { Refresh(TRUE, &rect); }
// repaint all invalid areas of the window immediately
virtual void Update() { }
// clear the window entirely
virtual void Clear() = 0;
// freeze the window: don't redraw it until it is thawed
virtual void Freeze() { }
// thaw the window: redraw it after it had been frozen
virtual void Thaw() { }
// adjust DC for drawing on this window
virtual void PrepareDC( wxDC & WXUNUSED(dc) ) { }
// the update region of the window contains the areas which must be
// repainted by the program
const wxRegion& GetUpdateRegion() const { return m_updateRegion; }
wxRegion& GetUpdateRegion() { return m_updateRegion; }
// get the update rectangleregion bounding box in client coords
wxRect GetUpdateClientRect() const;
// these functions verify whether the given point/rectangle belongs to
// (or at least intersects with) the update region
bool IsExposed( int x, int y ) const;
bool IsExposed( int x, int y, int w, int h ) const;
bool IsExposed( const wxPoint& pt ) const
{ return IsExposed(pt.x, pt.y); }
bool IsExposed( const wxRect& rect ) const
{ return IsExposed(rect.x, rect.y, rect.width, rect.height); }
// colours, fonts and cursors
// --------------------------
// set/retrieve the window colours (system defaults are used by
// default): Set functions return TRUE if colour was changed
virtual bool SetBackgroundColour( const wxColour &colour );
virtual bool SetForegroundColour( const wxColour &colour );
wxColour GetBackgroundColour() const { return m_backgroundColour; }
wxColour GetForegroundColour() const { return m_foregroundColour; }
// set/retrieve the cursor for this window (SetCursor() returns TRUE
// if the cursor was really changed)
virtual bool SetCursor( const wxCursor &cursor );
const wxCursor& GetCursor() const { return m_cursor; }
wxCursor& GetCursor() { return m_cursor; }
// set/retrieve the font for the window (SetFont() returns TRUE if the
// font really changed)
virtual bool SetFont( const wxFont &font ) = 0;
const wxFont& GetFont() const { return m_font; }
wxFont& GetFont() { return m_font; }
#if wxUSE_CARET
// associate a caret with the window
void SetCaret(wxCaret *caret);
// get the current caret (may be NULL)
wxCaret *GetCaret() const { return m_caret; }
#endif // wxUSE_CARET
// get the (average) character size for the current font
virtual int GetCharHeight() const = 0;
virtual int GetCharWidth() const = 0;
// get the width/height/... of the text using current or specified
// font
virtual void GetTextExtent(const wxString& string,
int *x, int *y,
int *descent = (int *) NULL,
int *externalLeading = (int *) NULL,
const wxFont *theFont = (const wxFont *) NULL)
const = 0;
// client <-> screen coords
// ------------------------
// translate to/from screen/client coordinates (pointers may be NULL)
void ClientToScreen( int *x, int *y ) const
{ DoClientToScreen(x, y); }
void ScreenToClient( int *x, int *y ) const
{ DoScreenToClient(x, y); }
// wxPoint interface to do the same thing
wxPoint ClientToScreen(const wxPoint& pt) const
{
int x = pt.x, y = pt.y;
DoClientToScreen(&x, &y);
return wxPoint(x, y);
}
wxPoint ScreenToClient(const wxPoint& pt) const
{
int x = pt.x, y = pt.y;
DoScreenToClient(&x, &y);
return wxPoint(x, y);
}
// test where the given (in client coords) point lies
wxHitTest HitTest(wxCoord x, wxCoord y) const
{ return DoHitTest(x, y); }
wxHitTest HitTest(const wxPoint& pt) const
{ return DoHitTest(pt.x, pt.y); }
// misc
// ----
// get the window border style: uses the current style and falls back to
// the default style for this class otherwise (see GetDefaultBorder())
wxBorder GetBorder() const;
void UpdateWindowUI();
#if wxUSE_MENUS
bool PopupMenu( wxMenu *menu, const wxPoint& pos )
{ return DoPopupMenu(menu, pos.x, pos.y); }
bool PopupMenu( wxMenu *menu, int x, int y )
{ return DoPopupMenu(menu, x, y); }
#endif // wxUSE_MENUS
// scrollbars
// ----------
// does the window have the scrollbar for this orientation?
bool HasScrollbar(int orient) const
{
return (m_windowStyle &
(orient == wxHORIZONTAL ? wxHSCROLL : wxVSCROLL)) != 0;
}
// configure the window scrollbars
virtual void SetScrollbar( int orient,
int pos,
int thumbvisible,
int range,
bool refresh = TRUE ) = 0;
virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE ) = 0;
virtual int GetScrollPos( int orient ) const = 0;
virtual int GetScrollThumb( int orient ) const = 0;
virtual int GetScrollRange( int orient ) const = 0;
// scroll window to the specified position
virtual void ScrollWindow( int dx, int dy,
const wxRect* rect = (wxRect *) NULL ) = 0;
// scrolls window by line/page: note that not all controls support this
//
// return TRUE if the position changed, FALSE otherwise
virtual bool ScrollLines(int WXUNUSED(lines)) { return FALSE; }
virtual bool ScrollPages(int WXUNUSED(pages)) { return FALSE; }
// convenient wrappers for ScrollLines/Pages
bool LineUp() { return ScrollLines(-1); }
bool LineDown() { return ScrollLines(1); }
bool PageUp() { return ScrollPages(-1); }
bool PageDown() { return ScrollPages(1); }
// context-sensitive help
// ----------------------
// these are the convenience functions wrapping wxHelpProvider methods
#if wxUSE_HELP
// associate this help text with this window
void SetHelpText(const wxString& text);
// associate this help text with all windows with the same id as this
// one
void SetHelpTextForId(const wxString& text);
// get the help string associated with this window (may be empty)
wxString GetHelpText() const;
#endif // wxUSE_HELP
// tooltips
// --------
#if wxUSE_TOOLTIPS
// the easiest way to set a tooltip for a window is to use this method
void SetToolTip( const wxString &tip );
// attach a tooltip to the window
void SetToolTip( wxToolTip *tip ) { DoSetToolTip(tip); }
// get the associated tooltip or NULL if none
wxToolTip* GetToolTip() const { return m_tooltip; }
#endif // wxUSE_TOOLTIPS
// drag and drop
// -------------
#if wxUSE_DRAG_AND_DROP
// set/retrieve the drop target associated with this window (may be
// NULL; it's owned by the window and will be deleted by it)
virtual void SetDropTarget( wxDropTarget *dropTarget ) = 0;
virtual wxDropTarget *GetDropTarget() const { return m_dropTarget; }
#endif // wxUSE_DRAG_AND_DROP
// constraints and sizers
// ----------------------
#if wxUSE_CONSTRAINTS
// set the constraints for this window or retrieve them (may be NULL)
void SetConstraints( wxLayoutConstraints *constraints );
wxLayoutConstraints *GetConstraints() const { return m_constraints; }
// implementation only
void UnsetConstraints(wxLayoutConstraints *c);
wxWindowList *GetConstraintsInvolvedIn() const
{ return m_constraintsInvolvedIn; }
void AddConstraintReference(wxWindowBase *otherWin);
void RemoveConstraintReference(wxWindowBase *otherWin);
void DeleteRelatedConstraints();
void ResetConstraints();
// these methods may be overriden for special layout algorithms
virtual void SetConstraintSizes(bool recurse = TRUE);
virtual bool LayoutPhase1(int *noChanges);
virtual bool LayoutPhase2(int *noChanges);
virtual bool DoPhase(int phase);
// these methods are virtual but normally won't be overridden
virtual void SetSizeConstraint(int x, int y, int w, int h);
virtual void MoveConstraint(int x, int y);
virtual void GetSizeConstraint(int *w, int *h) const ;
virtual void GetClientSizeConstraint(int *w, int *h) const ;
virtual void GetPositionConstraint(int *x, int *y) const ;
#endif // wxUSE_CONSTRAINTS
// when using constraints or sizers, it makes sense to update
// children positions automatically whenever the window is resized
// - this is done if autoLayout is on
void SetAutoLayout( bool autoLayout ) { m_autoLayout = autoLayout; }
bool GetAutoLayout() const { return m_autoLayout; }
// lay out the window and its children
virtual bool Layout();
// sizers
void SetSizer(wxSizer *sizer, bool deleteOld = TRUE );
void SetSizerAndFit( wxSizer *sizer, bool deleteOld = TRUE );
wxSizer *GetSizer() const { return m_windowSizer; }
// Track if this window is a member of a sizer
void SetContainingSizer(wxSizer* sizer) { m_containingSizer = sizer; }
wxSizer *GetContainingSizer() const { return m_containingSizer; }
// accessibility
// ----------------------
#if wxUSE_ACCESSIBILITY
// Override to create a specific accessible object.
virtual wxAccessible* CreateAccessible();
// Sets the accessible object.
void SetAccessible(wxAccessible* accessible) ;
// Returns the accessible object.
wxAccessible* GetAccessible() { return m_accessible; };
// Returns the accessible object, creating if necessary.
wxAccessible* GetOrCreateAccessible() ;
#endif
// backward compatibility
// ----------------------
#if WXWIN_COMPATIBILITY
bool Enabled() const { return IsEnabled(); }
void SetButtonFont(const wxFont& font) { SetFont(font); }
void SetLabelFont(const wxFont& font) { SetFont(font); }
wxFont& GetLabelFont() { return GetFont(); };
wxFont& GetButtonFont() { return GetFont(); };
#endif // WXWIN_COMPATIBILITY
// implementation
// --------------
// event handlers
void OnSysColourChanged( wxSysColourChangedEvent& event );
void OnInitDialog( wxInitDialogEvent &event );
void OnMiddleClick( wxMouseEvent& event );
#if wxUSE_HELP
void OnHelp(wxHelpEvent& event);
#endif // wxUSE_HELP
// get the haqndle of the window for the underlying window system: this
// is only used for wxWin itself or for user code which wants to call
// platform-specific APIs
virtual WXWidget GetHandle() const = 0;
#if wxUSE_PALETTE
// Store the palette used by DCs in wxWindow so that the dcs can share
// a palette. And we can respond to palette messages.
wxPalette GetPalette() const { return m_palette; }
// When palette is changed tell the DC to set the system palette to the
// new one.
void SetPalette(const wxPalette& pal);
// return true if we have a specific palette
bool HasCustomPalette() const { return m_hasCustomPalette; }
// return the first parent window with a custom palette or NULL
wxWindow *GetAncestorWithCustomPalette() const;
#endif // wxUSE_PALETTE
protected:
// event handling specific to wxWindow
#if wxUSE_VALIDATORS
virtual bool TryValidator(wxEvent& event);
#endif // wxUSE_VALIDATORS
virtual bool TryParent(wxEvent& event);
#if wxUSE_CONSTRAINTS
// satisfy the constraints for the windows but don't set the window sizes
void SatisfyConstraints();
#endif // wxUSE_CONSTRAINTS
// Send the wxWindowDestroyEvent
void SendDestroyEvent();
// the window id - a number which uniquely identifies a window among
// its siblings unless it is -1
wxWindowID m_windowId;
// the parent window of this window (or NULL) and the list of the children
// of this window
wxWindow *m_parent;
wxWindowList m_children;
// the minimal allowed size for the window (no minimal size if variable(s)
// contain(s) -1)
int m_minWidth,
m_minHeight,
m_maxWidth,
m_maxHeight;
// event handler for this window: usually is just 'this' but may be
// changed with SetEventHandler()
wxEvtHandler *m_eventHandler;
#if wxUSE_VALIDATORS
// associated validator or NULL if none
wxValidator *m_windowValidator;
#endif // wxUSE_VALIDATORS
#if wxUSE_DRAG_AND_DROP
wxDropTarget *m_dropTarget;
#endif // wxUSE_DRAG_AND_DROP
// visual window attributes
wxCursor m_cursor;
wxFont m_font;
wxColour m_backgroundColour, m_foregroundColour;
#if wxUSE_CARET
wxCaret *m_caret;
#endif // wxUSE_CARET
// the region which should be repainted in response to paint event
wxRegion m_updateRegion;
#if wxUSE_ACCEL
// the accelerator table for the window which translates key strokes into
// command events
wxAcceleratorTable m_acceleratorTable;
#endif // wxUSE_ACCEL
// the tooltip for this window (may be NULL)
#if wxUSE_TOOLTIPS
wxToolTip *m_tooltip;
#endif // wxUSE_TOOLTIPS
// constraints and sizers
#if wxUSE_CONSTRAINTS
// the constraints for this window or NULL
wxLayoutConstraints *m_constraints;
// constraints this window is involved in
wxWindowList *m_constraintsInvolvedIn;
#endif // wxUSE_CONSTRAINTS
// this window's sizer
wxSizer *m_windowSizer;
// The sizer this window is a member of, if any
wxSizer *m_containingSizer;
// Layout() window automatically when its size changes?
bool m_autoLayout:1;
// window state
bool m_isShown:1;
bool m_isEnabled:1;
bool m_isBeingDeleted:1;
// was the window colours/font explicitly changed by user?
bool m_hasBgCol:1;
bool m_hasFgCol:1;
bool m_hasFont:1;
// window attributes
long m_windowStyle,
m_exStyle;
wxString m_windowName;
bool m_themeEnabled;
#if wxUSE_PALETTE
wxPalette m_palette;
bool m_hasCustomPalette;
#endif // wxUSE_PALETTE
#if wxUSE_ACCESSIBILITY
wxAccessible* m_accessible;
#endif
// Virtual size (scrolling)
wxSize m_virtualSize;
int m_minVirtualWidth; // VirtualSizeHints
int m_minVirtualHeight;
int m_maxVirtualWidth;
int m_maxVirtualHeight;
// common part of all ctors: it is not virtual because it is called from
// ctor
void InitBase();
// override this to change the default (i.e. used when no style is
// specified) border for the window class
virtual wxBorder GetDefaultBorder() const;
// get the default size for the new window if no explicit size given
// FIXME why 20 and not 30, 10 or ...?
static int WidthDefault(int w) { return w == -1 ? 20 : w; }
static int HeightDefault(int h) { return h == -1 ? 20 : h; }
// set the best size for the control if the default size was given:
// replaces the fields of size == -1 with the best values for them and
// calls SetSize() if needed
//
// This function is rather unfortunately named.. it's really just a
// smarter SetSize / convenience function for expanding wxDefaultSize.
// Note that it does not influence the value returned by GetBestSize
// at all.
void SetBestSize(const wxSize& size)
{
// the size only needs to be changed if the current size is incomplete,
// i.e. one of the components was specified as default -- so if both
// were given, simply don't do anything
if ( size.x == -1 || size.y == -1 )
{
wxSize sizeBest = DoGetBestSize();
if ( size.x != -1 )
sizeBest.x = size.x;
if ( size.y != -1 )
sizeBest.y = size.y;
SetSize(sizeBest);
}
}
// more pure virtual functions
// ---------------------------
// NB: we must have DoSomething() function when Something() is an overloaded
// method: indeed, we can't just have "virtual Something()" in case when
// the function is overloaded because then we'd have to make virtual all
// the variants (otherwise only the virtual function may be called on a
// pointer to derived class according to C++ rules) which is, in
// general, absolutely not needed. So instead we implement all
// overloaded Something()s in terms of DoSomething() which will be the
// only one to be virtual.
// coordinates translation
virtual void DoClientToScreen( int *x, int *y ) const = 0;
virtual void DoScreenToClient( int *x, int *y ) const = 0;
virtual wxHitTest DoHitTest(wxCoord x, wxCoord y) const;
// capture/release the mouse, used by Capture/ReleaseMouse()
virtual void DoCaptureMouse() = 0;
virtual void DoReleaseMouse() = 0;
// retrieve the position/size of the window
virtual void DoGetPosition( int *x, int *y ) const = 0;
virtual void DoGetSize( int *width, int *height ) const = 0;
virtual void DoGetClientSize( int *width, int *height ) const = 0;
// get the size which best suits the window: for a control, it would be
// the minimal size which doesn't truncate the control, for a panel - the
// same size as it would have after a call to Fit()
virtual wxSize DoGetBestSize() const;
// this is the virtual function to be overriden in any derived class which
// wants to change how SetSize() or Move() works - it is called by all
// versions of these functions in the base class
virtual void DoSetSize(int x, int y,
int width, int height,
int sizeFlags = wxSIZE_AUTO) = 0;
// same as DoSetSize() for the client size
virtual void DoSetClientSize(int width, int height) = 0;
// move the window to the specified location and resize it: this is called
// from both DoSetSize() and DoSetClientSize() and would usually just
// reposition this window except for composite controls which will want to
// arrange themselves inside the given rectangle
virtual void DoMoveWindow(int x, int y, int width, int height) = 0;
#if wxUSE_TOOLTIPS
virtual void DoSetToolTip( wxToolTip *tip );
#endif // wxUSE_TOOLTIPS
#if wxUSE_MENUS
virtual bool DoPopupMenu( wxMenu *menu, int x, int y ) = 0;
#endif // wxUSE_MENUS
// Makes an adjustment to the window position (for example, a frame that has
// a toolbar that it manages itself).
virtual void AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const;
private:
// contains the last id generated by NewControlId
static int ms_lastControlId;
// the stack of windows which have captured the mouse
static struct WXDLLEXPORT wxWindowNext *ms_winCaptureNext;
DECLARE_ABSTRACT_CLASS(wxWindowBase)
DECLARE_NO_COPY_CLASS(wxWindowBase)
DECLARE_EVENT_TABLE()
};
// ----------------------------------------------------------------------------
// now include the declaration of wxWindow class
// ----------------------------------------------------------------------------
// include the declaration of the platform-specific class
#if defined(__WXMSW__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowMSW
#else // !wxUniv
#define wxWindowMSW wxWindow
#define sm_classwxWindowMSW sm_classwxWindow
#endif // wxUniv/!wxUniv
#include "wx/msw/window.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/window.h"
#elif defined(__WXGTK__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowGTK
#else // !wxUniv
#define wxWindowGTK wxWindow
#define sm_classwxWindowGTK sm_classwxWindow
#endif // wxUniv
#include "wx/gtk/window.h"
#elif defined(__WXX11__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowX11
#else // !wxUniv
#define wxWindowX11 wxWindow
#define sm_classwxWindowX11 sm_classwxWindow
#endif // wxUniv
#include "wx/x11/window.h"
#elif defined(__WXMGL__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowMGL
#else // !wxUniv
#define wxWindowMGL wxWindow
#define sm_classwxWindowMGL sm_classwxWindow
#endif // wxUniv
#include "wx/mgl/window.h"
#elif defined(__WXMAC__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowMac
#else // !wxUniv
#define wxWindowMac wxWindow
#define sm_classwxWindowMac sm_classwxWindow
#endif // wxUniv
#include "wx/mac/window.h"
#elif defined(__WXCOCOA__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowCocoa
#else // !wxUniv
#define wxWindowCocoa wxWindow
#define sm_classwxWindowCocoa sm_classwxWindow
#endif // wxUniv
#include "wx/cocoa/window.h"
#elif defined(__WXPM__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowOS2
#else // !wxUniv
#define wxWindowOS2 wxWindow
#define sm_classwxWindowOS2 sm_classwxWindow
#endif // wxUniv/!wxUniv
#include "wx/os2/window.h"
#endif
// for wxUniversal, we now derive the real wxWindow from wxWindow<platform>,
// for the native ports we already have defined it above
#if defined(__WXUNIVERSAL__)
#ifndef wxWindowNative
#error "wxWindowNative must be defined above!"
#endif
#include "wx/univ/window.h"
#endif // wxUniv
// ----------------------------------------------------------------------------
// inline functions which couldn't be declared in the class body because of
// forward dependencies
// ----------------------------------------------------------------------------
inline wxWindow *wxWindowBase::GetGrandParent() const
{
return m_parent ? m_parent->GetParent() : (wxWindow *)NULL;
}
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
// Find the wxWindow at the current mouse position, also returning the mouse
// position.
WXDLLEXPORT extern wxWindow* wxFindWindowAtPointer(wxPoint& pt);
// Get the current mouse position.
WXDLLEXPORT extern wxPoint wxGetMousePosition();
// get the currently active window of this application or NULL
WXDLLEXPORT extern wxWindow *wxGetActiveWindow();
// get the (first) top level parent window
WXDLLEXPORT wxWindow* wxGetTopLevelParent(wxWindow *win);
// deprecated (doesn't start with 'wx' prefix), use wxWindow::NewControlId()
inline int NewControlId() { return wxWindowBase::NewControlId(); }
#if wxUSE_ACCESSIBILITY
// ----------------------------------------------------------------------------
// accessible object for windows
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxWindowAccessible: public wxAccessible
{
public:
wxWindowAccessible(wxWindow* win): wxAccessible(win) { if (win) win->SetAccessible(this); }
virtual ~wxWindowAccessible() {};
// Overridables
// Can return either a child object, or an integer
// representing the child element, starting from 1.
virtual wxAccStatus HitTest(const wxPoint& pt, int* childId, wxAccessible** childObject);
// Returns the rectangle for this object (id = 0) or a child element (id > 0).
virtual wxAccStatus GetLocation(wxRect& rect, int elementId);
// Navigates from fromId to toId/toObject.
virtual wxAccStatus Navigate(wxNavDir navDir, int fromId,
int* toId, wxAccessible** toObject);
// Gets the name of the specified object.
virtual wxAccStatus GetName(int childId, wxString* name);
// Gets the number of children.
virtual wxAccStatus GetChildCount(int* childCount);
// Gets the specified child (starting from 1).
// If *child is NULL and return value is wxACC_OK,
// this means that the child is a simple element and
// not an accessible object.
virtual wxAccStatus GetChild(int childId, wxAccessible** child);
// Gets the parent, or NULL.
virtual wxAccStatus GetParent(wxAccessible** parent);
// Performs the default action. childId is 0 (the action for this object)
// or > 0 (the action for a child).
// Return wxACC_NOT_SUPPORTED if there is no default action for this
// window (e.g. an edit control).
virtual wxAccStatus DoDefaultAction(int childId);
// Gets the default action for this object (0) or > 0 (the action for a child).
// Return wxACC_OK even if there is no action. actionName is the action, or the empty
// string if there is no action.
// The retrieved string describes the action that is performed on an object,
// not what the object does as a result. For example, a toolbar button that prints
// a document has a default action of "Press" rather than "Prints the current document."
virtual wxAccStatus GetDefaultAction(int childId, wxString* actionName);
// Returns the description for this object or a child.
virtual wxAccStatus GetDescription(int childId, wxString* description);
// Returns help text for this object or a child, similar to tooltip text.
virtual wxAccStatus GetHelpText(int childId, wxString* helpText);
// Returns the keyboard shortcut for this object or child.
// Return e.g. ALT+K
virtual wxAccStatus GetKeyboardShortcut(int childId, wxString* shortcut);
// Returns a role constant.
virtual wxAccStatus GetRole(int childId, wxAccRole* role);
// Returns a state constant.
virtual wxAccStatus GetState(int childId, long* state);
// Returns a localized string representing the value for the object
// or child.
virtual wxAccStatus GetValue(int childId, wxString* strValue);
// Selects the object or child.
virtual wxAccStatus Select(int childId, wxAccSelectionFlags selectFlags);
// Gets the window with the keyboard focus.
// If childId is 0 and child is NULL, no object in
// this subhierarchy has the focus.
// If this object has the focus, child should be 'this'.
virtual wxAccStatus GetFocus(int* childId, wxAccessible** child);
// Gets a variant representing the selected children
// of this object.
// Acceptable values:
// - a null variant (IsNull() returns TRUE)
// - a list variant (GetType() == wxT("list")
// - an integer representing the selected child element,
// or 0 if this object is selected (GetType() == wxT("long")
// - a "void*" pointer to a wxAccessible child object
virtual wxAccStatus GetSelections(wxVariant* selections);
};
#endif // wxUSE_ACCESSIBILITY
#endif
// _WX_WINDOW_H_BASE_
Reference in New Issue View Git Blame Copy Permalink