/////////////////////////////////////////////////////////////////////////////// // Name: window.h // Purpose: wxWindowBase class - the interface of wxWindow // Author: Vadim Zeitlin // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ // Copyright: (c) wxWindows team // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef _WX_WINDOW_H_BASE_ #define _WX_WINDOW_H_BASE_ #ifdef __GNUG__ #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" #if wxUSE_ACCEL #include "wx/accel.h" #endif // wxUSE_ACCEL // ---------------------------------------------------------------------------- // forward declarations // ---------------------------------------------------------------------------- class WXDLLEXPORT wxCaret; class WXDLLEXPORT wxClientData; 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 wxValidator; class WXDLLEXPORT wxWindowBase; class WXDLLEXPORT wxWindow; // ---------------------------------------------------------------------------- // (pseudo)template list classes // ---------------------------------------------------------------------------- WX_DECLARE_LIST_3(wxWindow, wxWindowBase, wxWindowList, wxWindowListNode); // ---------------------------------------------------------------------------- // global variables // ---------------------------------------------------------------------------- WXDLLEXPORT_DATA(extern wxWindowList) wxTopLevelWindows; // ---------------------------------------------------------------------------- // helper classes used by [SG]etClientObject/Data // // TODO move into a separate header? // ---------------------------------------------------------------------------- class wxClientData { public: wxClientData() { } virtual ~wxClientData() { } }; class wxStringClientData : public wxClientData { public: wxStringClientData() { } wxStringClientData( const wxString &data ) : m_data(data) { } void SetData( const wxString &data ) { m_data = data; } const wxString& GetData() const { return m_data; } private: wxString m_data; }; // ---------------------------------------------------------------------------- // 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 { DECLARE_ABSTRACT_CLASS(wxWindowBase); public: // creating the window // ------------------- // default ctor wxWindowBase() { InitBase(); } // pseudo ctor (can't be virtual, called from ctor) bool CreateBase(wxWindowBase *parent, wxWindowID id, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = wxPanelNameStr); virtual ~wxWindowBase(); #if wxUSE_WX_RESOURCES // these functions are implemented in resource.cpp and resourc2.cpp virtual bool LoadFromResource(wxWindow *parent, const wxString& resourceName, const wxResourceTable *table = (const wxResourceTable *) NULL); virtual wxControl *CreateItem(const wxItemResource* childResource, const wxItemResource* parentResource, const wxResourceTable *table = (const wxResourceTable *) NULL); #endif // wxUSE_WX_RESOURCES // 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 // ----------------- // 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 ""; } // 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 id ) { m_windowId = id; } 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 id) { return id - 1; } // get the id of the control preceding the one with the given // (autogenerated) id static int PrevControlId(int id) { return id + 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 ) { DoSetSize( x, y, -1, -1, wxSIZE_USE_EXISTING ); } void Move(const wxPoint& pt) { Move(pt.x, pt.y); } // 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); } // centre with respect to the the parent window void Centre( int direction = wxHORIZONTAL ); void Center( int direction = wxHORIZONTAL ) { Centre(direction); } // set window size to wrap around its children virtual void Fit(); // 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 ); // 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 (m_windowStyle & wxRETAINED) != 0; } // make the window modal (all other windows unresponsive) virtual void MakeModal(bool modal = TRUE); // focus handling // -------------- // set focus to this window virtual void SetFocus() = 0; // 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(); } // 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? bool IsTopLevel() const { return m_parent != 0; } // 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 ); // find window among the descendants of this one either by id or by // name (return NULL if not found) wxWindow *FindWindow( long id ); wxWindow *FindWindow( const wxString& name ); // implementation mostly virtual void AddChild( wxWindowBase *child ); virtual void RemoveChild( wxWindowBase *child ); // 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 ); // validators and client data // -------------------------- #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 // each window may have associated client data: either a pointer to // wxClientData object in which case it is managed by the window (i.e. // it will delete the data when it's destroyed) or an untyped pointer // which won't be deleted by the window virtual void SetClientObject( wxClientData *data ) { if ( m_clientObject ) delete m_clientObject; m_clientObject = data; } virtual wxClientData *GetClientObject() const { return m_clientObject; } virtual void SetClientData( void *data ) { m_clientData = data; } virtual void *GetClientData() const { return m_clientData; } // 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 virtual void CaptureMouse() = 0; virtual void ReleaseMouse() = 0; // 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; // clear the window entirely virtual void Clear() = 0; // 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; } // 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; // 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 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); } // misc // ---- void UpdateWindowUI(); virtual bool PopupMenu( wxMenu *menu, int x, int y ) = 0; // scrollbars // ---------- // 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; // 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; } // when using constraints, 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; } // do layout the window and its children virtual bool Layout(); // 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); // these methods are virtual but normally won't be overridden virtual void TransformSizerToActual(int *x, int *y) const ; 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 ; // sizers // TODO: what are they and how do they work?? void SetSizer( wxSizer *sizer ); wxSizer *GetSizer() const { return m_windowSizer; } void SetSizerParent( wxWindowBase *win ) { m_sizerParent = win; } wxWindowBase *GetSizerParent() const { return m_sizerParent; } virtual void SizerSetSize(int x, int y, int w, int h); virtual void SizerMove(int x, int y); #endif // wxUSE_CONSTRAINTS // 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 ); // 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; protected: // 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 // user data associated with the window: either an object which will be // deleted by the window when it's deleted or some raw pointer which we do // nothing with wxClientData *m_clientObject; void *m_clientData; // 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; // top level and the parent sizers // TODO what's this and how does it work?) wxSizer *m_windowSizer; wxWindowBase *m_sizerParent; // Layout() window automatically when its size changes? bool m_autoLayout:1; #endif // wxUSE_CONSTRAINTS // window state bool m_isShown:1; bool m_isEnabled:1; bool m_isBeingDeleted:1; // window attributes long m_windowStyle; wxString m_windowName; protected: // common part of all ctors: it is not virtual because it is called from // ctor void InitBase(); // 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; } // 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; // 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; // 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; #if wxUSE_TOOLTIPS virtual void DoSetToolTip( wxToolTip *tip ); #endif // wxUSE_TOOLTIPS private: // contains the last id generated by NewControlId static int ms_lastControlId; DECLARE_NO_COPY_CLASS(wxWindowBase); DECLARE_EVENT_TABLE() }; // ---------------------------------------------------------------------------- // now include the declaration of wxWindow class // ---------------------------------------------------------------------------- #if defined(__WXMSW__) #include "wx/msw/window.h" #elif defined(__WXMOTIF__) #include "wx/motif/window.h" #elif defined(__WXGTK__) #include "wx/gtk/window.h" #elif defined(__WXQT__) #include "wx/qt/window.h" #elif defined(__WXMAC__) #include "wx/mac/window.h" #endif // ---------------------------------------------------------------------------- // 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 function // ---------------------------------------------------------------------------- WXDLLEXPORT extern wxWindow* wxGetActiveWindow(); inline WXDLLEXPORT int NewControlId() { return wxWindowBase::NewControlId(); } #endif // _WX_WINDOW_H_BASE_