/////////////////////////////////////////////////////////////////////////////// // Name: wx/window.h // Purpose: wxWindowBase class - the interface of wxWindow // Author: Vadim Zeitlin // Modified by: Ron Lee // Created: 01/02/97 // Copyright: (c) Vadim Zeitlin // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef _WX_WINDOW_H_BASE_ #define _WX_WINDOW_H_BASE_ // ---------------------------------------------------------------------------- // 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/intl.h" #include "wx/validate.h" // for wxDefaultValidator (always include it) #include "wx/windowid.h" #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 // !__WXUNIVERSAL__ #define wxUSE_MENUS_NATIVE wxUSE_MENUS #endif // __WXUNIVERSAL__/!__WXUNIVERSAL__ // ---------------------------------------------------------------------------- // forward declarations // ---------------------------------------------------------------------------- class WXDLLIMPEXP_FWD_CORE wxCaret; class WXDLLIMPEXP_FWD_CORE wxControl; class WXDLLIMPEXP_FWD_CORE wxDC; class WXDLLIMPEXP_FWD_CORE wxDropTarget; class WXDLLIMPEXP_FWD_CORE wxLayoutConstraints; class WXDLLIMPEXP_FWD_CORE wxSizer; class WXDLLIMPEXP_FWD_CORE wxTextEntry; class WXDLLIMPEXP_FWD_CORE wxToolTip; class WXDLLIMPEXP_FWD_CORE wxWindowBase; class WXDLLIMPEXP_FWD_CORE wxWindow; class WXDLLIMPEXP_FWD_CORE wxScrollHelper; #if wxUSE_ACCESSIBILITY class WXDLLIMPEXP_FWD_CORE wxAccessible; #endif // ---------------------------------------------------------------------------- // helper stuff used by wxWindow // ---------------------------------------------------------------------------- // struct containing all the visual attributes of a control struct WXDLLIMPEXP_CORE wxVisualAttributes { // the font used for control label/text inside it wxFont font; // the foreground colour wxColour colFg; // the background colour, may be wxNullColour if the controls background // colour is not solid wxColour colBg; }; // different window variants, on platforms like e.g. mac uses different // rendering sizes enum wxWindowVariant { wxWINDOW_VARIANT_NORMAL, // Normal size wxWINDOW_VARIANT_SMALL, // Smaller size (about 25 % smaller than normal) wxWINDOW_VARIANT_MINI, // Mini size (about 33 % smaller than normal) wxWINDOW_VARIANT_LARGE, // Large size (about 25 % larger than normal) wxWINDOW_VARIANT_MAX }; #if wxUSE_SYSTEM_OPTIONS #define wxWINDOW_DEFAULT_VARIANT wxT("window-default-variant") #endif // valid values for Show/HideWithEffect() enum wxShowEffect { wxSHOW_EFFECT_NONE, wxSHOW_EFFECT_ROLL_TO_LEFT, wxSHOW_EFFECT_ROLL_TO_RIGHT, wxSHOW_EFFECT_ROLL_TO_TOP, wxSHOW_EFFECT_ROLL_TO_BOTTOM, wxSHOW_EFFECT_SLIDE_TO_LEFT, wxSHOW_EFFECT_SLIDE_TO_RIGHT, wxSHOW_EFFECT_SLIDE_TO_TOP, wxSHOW_EFFECT_SLIDE_TO_BOTTOM, wxSHOW_EFFECT_BLEND, wxSHOW_EFFECT_EXPAND, wxSHOW_EFFECT_MAX }; // Values for EnableTouchEvents() mask. enum { wxTOUCH_NONE = 0x0000, wxTOUCH_VERTICAL_PAN_GESTURE = 0x0001, wxTOUCH_HORIZONTAL_PAN_GESTURE = 0x0002, wxTOUCH_PAN_GESTURES = wxTOUCH_VERTICAL_PAN_GESTURE | wxTOUCH_HORIZONTAL_PAN_GESTURE, wxTOUCH_ZOOM_GESTURE = 0x0004, wxTOUCH_ROTATE_GESTURE = 0x0008, wxTOUCH_PRESS_GESTURES = 0x0010, wxTOUCH_ALL_GESTURES = 0x001f }; // flags for SendSizeEvent() enum { wxSEND_EVENT_POST = 1 }; // Flags for WXSetInitialFittingClientSize(). enum { wxSIZE_SET_CURRENT = 0x0001, // Set the current size. wxSIZE_SET_MIN = 0x0002 // Set the size as the minimum allowed size. }; // ---------------------------------------------------------------------------- // (pseudo)template list classes // ---------------------------------------------------------------------------- WX_DECLARE_LIST_3(wxWindow, wxWindowBase, wxWindowList, wxWindowListNode, class WXDLLIMPEXP_CORE); // ---------------------------------------------------------------------------- // global variables // ---------------------------------------------------------------------------- extern WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows; // declared here for compatibility only, main declaration is in wx/app.h extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete; // ---------------------------------------------------------------------------- // 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 WXDLLIMPEXP_CORE wxWindowBase : public wxEvtHandler { public: // creating the window // ------------------- // default ctor, initializes everything which can be initialized before // Create() wxWindowBase() ; 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; // window attributes // ----------------- // label is just the same as the title (but for, e.g., buttons it // makes more sense to speak about labels), title access // is available from wxTLW classes only (frames, dialogs) virtual void SetLabel(const wxString& label) = 0; virtual wxString GetLabel() const = 0; // the window name is used for resource 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; } // sets the window variant, calls internally DoSetVariant if variant // has changed void SetWindowVariant(wxWindowVariant variant); wxWindowVariant GetWindowVariant() const { return m_windowVariant; } // get or change the layout direction (LTR or RTL) for this window, // wxLayout_Default is returned if layout direction is not supported virtual wxLayoutDirection GetLayoutDirection() const { return wxLayout_Default; } virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { } // mirror coordinates for RTL layout if this window uses it and if the // mirroring is not done automatically like Win32 virtual wxCoord AdjustForLayoutDirection(wxCoord x, wxCoord width, wxCoord widthTotal) const; // window id uniquely identifies the window among its siblings unless // it is wxID_ANY which means "don't care" virtual void SetId( wxWindowID winid ) { m_windowId = winid; } wxWindowID GetId() const { return m_windowId; } // generate a unique id (or count of them consecutively), returns a // valid id in the auto-id range or wxID_NONE if failed. If using // autoid management, it will mark the id as reserved until it is // used (by assigning it to a wxWindowIDRef) or unreserved. static wxWindowID NewControlId(int count = 1) { return wxIdManager::ReserveId(count); } // If an ID generated from NewControlId is not assigned to a wxWindowIDRef, // it must be unreserved static void UnreserveControlId(wxWindowID id, int count = 1) { wxIdManager::UnreserveId(id, count); } // 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( wxDefaultCoord, wxDefaultCoord, 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, wxDefaultCoord, wxDefaultCoord, flags); } void Move(const wxPoint& pt, int flags = wxSIZE_USE_EXISTING) { Move(pt.x, pt.y, flags); } void SetPosition(const wxPoint& pt) { Move(pt); } // 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 (pointers may be NULL): notice that it is in // client coordinates for child windows and screen coordinates for the // top level ones, use GetScreenPosition() if you need screen // coordinates for all kinds of windows void GetPosition( int *x, int *y ) const { DoGetPosition(x, y); } wxPoint GetPosition() const { int x, y; DoGetPosition(&x, &y); return wxPoint(x, y); } // get the window position in screen coordinates void GetScreenPosition(int *x, int *y) const { DoGetScreenPosition(x, y); } wxPoint GetScreenPosition() const { int x, y; DoGetScreenPosition(&x, &y); return wxPoint(x, y); } // get the window size (pointers may be NULL) void GetSize( int *w, int *h ) const { DoGetSize(w, h); } wxSize GetSize() const { int w, h; DoGetSize(& w, & h); return wxSize(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 position and size at once wxRect GetRect() const { int x, y, w, h; GetPosition(&x, &y); GetSize(&w, &h); return wxRect(x, y, w, h); } wxRect GetScreenRect() const { int x, y, w, h; GetScreenPosition(&x, &y); GetSize(&w, &h); return wxRect(x, y, 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()); } // client<->window size conversion virtual wxSize ClientToWindowSize(const wxSize& size) const; virtual wxSize WindowToClientSize(const wxSize& size) const; // get the size best suited for the window (in fact, minimal // acceptable size using which it will still look "nice" in // most situations) wxSize GetBestSize() const; void GetBestSize(int *w, int *h) const { wxSize s = GetBestSize(); if ( w ) *w = s.x; if ( h ) *h = s.y; } // Determine the best size in the other direction if one of them is // fixed. This is used with windows that can wrap their contents and // returns input-independent best size for the others. int GetBestHeight(int width) const; int GetBestWidth(int height) const; void SetScrollHelper( wxScrollHelper *sh ) { m_scrollHelper = sh; } wxScrollHelper *GetScrollHelper() { return m_scrollHelper; } // reset the cached best size value so it will be recalculated the // next time it is needed. void InvalidateBestSize(); void CacheBestSize(const wxSize& size) const { wxConstCast(this, wxWindowBase)->m_bestSizeCache = size; } // This function will merge the window's best size into the window's // minimum size, giving priority to the min size components, and // returns the results. virtual wxSize GetEffectiveMinSize() const; #if WXWIN_COMPATIBILITY_2_8 wxDEPRECATED_MSG("use GetEffectiveMinSize() instead") wxSize GetBestFittingSize() const; #endif // WXWIN_COMPATIBILITY_2_8 // A 'Smart' SetSize that will fill in default size values with 'best' // size. Sets the minsize to what was passed in. void SetInitialSize(const wxSize& size=wxDefaultSize); #if WXWIN_COMPATIBILITY_2_8 wxDEPRECATED_MSG("use SetInitialSize() instead") void SetBestFittingSize(const wxSize& size=wxDefaultSize); #endif // WXWIN_COMPATIBILITY_2_8 // 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 dir = wxBOTH) { DoCentre(dir); } void Center(int dir = wxBOTH) { DoCentre(dir); } // centre with respect to the parent window void CentreOnParent(int dir = wxBOTH) { DoCentre(dir); } 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(); // SetSizeHints is actually for setting the size hints // for the wxTLW for a Window Manager - hence the name - // and it is therefore overridden in wxTLW to do that. // In wxWindow(Base), it has (unfortunately) been abused // to mean the same as SetMinSize() and SetMaxSize(). virtual void SetSizeHints( int minW, int minH, int maxW = wxDefaultCoord, int maxH = wxDefaultCoord, int incW = wxDefaultCoord, int incH = wxDefaultCoord ) { DoSetSizeHints(minW, minH, maxW, maxH, incW, incH); } void SetSizeHints( const wxSize& minSize, const wxSize& maxSize=wxDefaultSize, const wxSize& incSize=wxDefaultSize) { DoSetSizeHints(minSize.x, minSize.y, maxSize.x, maxSize.y, incSize.x, incSize.y); } #if WXWIN_COMPATIBILITY_2_8 // these are useless and do nothing since wxWidgets 2.9 wxDEPRECATED( virtual void SetVirtualSizeHints( int minW, int minH, int maxW = wxDefaultCoord, int maxH = wxDefaultCoord ) ); wxDEPRECATED( void SetVirtualSizeHints( const wxSize& minSize, const wxSize& maxSize=wxDefaultSize) ); #endif // WXWIN_COMPATIBILITY_2_8 // Call these to override what GetBestSize() returns. This // method is only virtual because it is overridden in wxTLW // as a different API for SetSizeHints(). virtual void SetMinSize(const wxSize& minSize); virtual void SetMaxSize(const wxSize& maxSize); // Like Set*Size, but for client, not window, size virtual void SetMinClientSize(const wxSize& size) { SetMinSize(ClientToWindowSize(size)); } virtual void SetMaxClientSize(const wxSize& size) { SetMaxSize(ClientToWindowSize(size)); } // Override these methods to impose restrictions on min/max size. // The easier way is to call SetMinSize() and SetMaxSize() which // will have the same effect. Doing both is non-sense. virtual wxSize GetMinSize() const { return wxSize(m_minWidth, m_minHeight); } virtual wxSize GetMaxSize() const { return wxSize(m_maxWidth, m_maxHeight); } // Like Get*Size, but for client, not window, size virtual wxSize GetMinClientSize() const { return WindowToClientSize(GetMinSize()); } virtual wxSize GetMaxClientSize() const { return WindowToClientSize(GetMaxSize()); } // Get the min and max values one by one int GetMinWidth() const { return GetMinSize().x; } int GetMinHeight() const { return GetMinSize().y; } int GetMaxWidth() const { return GetMaxSize().x; } int GetMaxHeight() const { return GetMaxSize().y; } // 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 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. e.g. the virtual area of a // wxScrolledWindow. virtual void DoSetVirtualSize( int x, int y ); virtual wxSize DoGetVirtualSize() const; // 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 ) ); } // Return the magnification of the content of this window for the platforms // using logical pixels different from physical ones, i.e. those for which // wxHAVE_DPI_INDEPENDENT_PIXELS is defined. For the other ones, always // returns 1, regardless of DPI scale factor returned by the function below. virtual double GetContentScaleFactor() const; // Return the ratio of the DPI used by this window to the standard DPI, // e.g. 1 for standard DPI screens and 2 for "200% scaling". virtual double GetDPIScaleFactor() const; // return the size of the left/right and top/bottom borders in x and y // components of the result respectively virtual wxSize GetWindowBorderSize() const; // wxSizer and friends use this to give a chance to a component to recalc // its min size once one of the final size components is known. Override // this function when that is useful (such as for wxStaticText which can // stretch over several lines). Parameter availableOtherDir // tells the item how much more space there is available in the opposite // direction (-1 if unknown). virtual bool InformFirstDirection(int direction, int size, int availableOtherDir); // sends a size event to the window using its current size -- this has an // effect of refreshing the window layout // // by default the event is sent, i.e. processed immediately, but if flags // value includes wxSEND_EVENT_POST then it's posted, i.e. only schedule // for later processing virtual void SendSizeEvent(int flags = 0); // this is a safe wrapper for GetParent()->SendSizeEvent(): it checks that // we have a parent window and it's not in process of being deleted // // this is used by controls such as tool/status bars changes to which must // also result in parent re-layout void SendSizeEventToParent(int flags = 0); // this is a more readable synonym for SendSizeEvent(wxSEND_EVENT_POST) void PostSizeEvent() { SendSizeEvent(wxSEND_EVENT_POST); } // this is the same as SendSizeEventToParent() but using PostSizeEvent() void PostSizeEventToParent() { SendSizeEventToParent(wxSEND_EVENT_POST); } // These functions should be used before repositioning the children of // this window to reduce flicker or, in MSW case, even avoid display // corruption in some situations (so they're more than just optimization). // // EndRepositioningChildren() should be called if and only if // BeginRepositioningChildren() returns true. To ensure that this is always // done automatically, use ChildrenRepositioningGuard class below. virtual bool BeginRepositioningChildren() { return false; } virtual void EndRepositioningChildren() { } // A simple helper which ensures that EndRepositioningChildren() is called // from its dtor if and only if calling BeginRepositioningChildren() from // the ctor returned true. class ChildrenRepositioningGuard { public: // Notice that window can be NULL here, for convenience. In this case // this class simply doesn't do anything. explicit ChildrenRepositioningGuard(wxWindowBase* win) : m_win(win), m_callEnd(win && win->BeginRepositioningChildren()) { } ~ChildrenRepositioningGuard() { if ( m_callEnd ) m_win->EndRepositioningChildren(); } private: wxWindowBase* const m_win; const bool m_callEnd; wxDECLARE_NO_COPY_CLASS(ChildrenRepositioningGuard); }; // 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); } // show or hide the window with a special effect, not implemented on // most platforms (where it is the same as Show()/Hide() respectively) // // timeout specifies how long the animation should take, in ms, the // default value of 0 means to use the default (system-dependent) value virtual bool ShowWithEffect(wxShowEffect WXUNUSED(effect), unsigned WXUNUSED(timeout) = 0) { return Show(); } virtual bool HideWithEffect(wxShowEffect WXUNUSED(effect), unsigned WXUNUSED(timeout) = 0) { return Hide(); } // returns true if window was enabled/disabled, false if nothing done virtual bool Enable( bool enable = true ); bool Disable() { return Enable(false); } virtual bool IsShown() const { return m_isShown; } // returns true if the window is really enabled and false otherwise, // whether because it had been explicitly disabled itself or because // its parent is currently disabled -- then this method returns false // whatever is the intrinsic state of this window, use IsThisEnabled(0 // to retrieve it. In other words, this relation always holds: // // IsEnabled() == IsThisEnabled() && parent.IsEnabled() // bool IsEnabled() const; // returns the internal window state independently of the parent(s) // state, i.e. the state in which the window would be if all its // parents were enabled (use IsEnabled() above to get the effective // window state) virtual bool IsThisEnabled() const { return m_isEnabled; } // returns true if the window is visible, i.e. IsShown() returns true // if called on it and all its parents up to the first TLW virtual bool IsShownOnScreen() const; // 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) synonyms void SetWindowStyle( long style ) { SetWindowStyleFlag(style); } long GetWindowStyle() const { return GetWindowStyleFlag(); } // check if the flag is set bool HasFlag(int flag) const { return (m_windowStyle & flag) != 0; } virtual bool IsRetained() const { return HasFlag(wxRETAINED); } // turn the flag on if it had been turned off before and vice versa, // return true if the flag is currently turned on bool ToggleWindowStyle(int flag); // 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; } bool HasExtraStyle(int exFlag) const { return (m_exStyle & exFlag) != 0; } #if WXWIN_COMPATIBILITY_2_8 // make the window modal (all other windows unresponsive) wxDEPRECATED( virtual void MakeModal(bool modal = true) ); #endif // (primitive) theming support // --------------------------- 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(); static wxWindow *DoFindFocus() /* = 0: implement in derived classes */; // return true if the window has focus (handles composite windows // correctly - returns true if GetMainWindowOfCompositeControl() // has focus) virtual bool HasFocus() const; // can this window have focus in principle? // // the difference between AcceptsFocus[FromKeyboard]() and CanAcceptFocus // [FromKeyboard]() is that the former functions are meant to be // overridden in the derived classes to simply return false if the // control can't have focus, while the latter are meant to be used by // this class clients and take into account the current window state virtual bool AcceptsFocus() const { return true; } // can this window or one of its children accept focus? // // usually it's the same as AcceptsFocus() but is overridden for // container windows virtual bool AcceptsFocusRecursively() const { return AcceptsFocus(); } // 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 !m_disableFocusFromKbd && AcceptsFocus(); } // Disable any input focus from the keyboard void DisableFocusFromKeyboard() { m_disableFocusFromKbd = true; } // Can this window be focused right now, in its current state? This // shouldn't be called at all if AcceptsFocus() returns false. // // It is a convenient helper for the various functions using it below // but also a hook allowing to override the default logic for some rare // cases (currently just wxRadioBox in wxMSW) when it's inappropriate. virtual bool CanBeFocused() const { return IsShown() && IsEnabled(); } // can this window itself have focus? bool IsFocusable() const { return AcceptsFocus() && CanBeFocused(); } // can this window have focus right now? // // if this method returns true, it means that calling SetFocus() will // put focus either to this window or one of its children, if you need // to know whether this window accepts focus itself, use IsFocusable() bool CanAcceptFocus() const { return AcceptsFocusRecursively() && CanBeFocused(); } // can this window be assigned focus from keyboard right now? bool CanAcceptFocusFromKeyboard() const { return AcceptsFocusFromKeyboard() && CanBeFocused(); } // call this when the return value of AcceptsFocus() changes virtual void SetCanFocus(bool WXUNUSED(canFocus)) { } // call to customize visible focus indicator if possible in the port virtual void EnableVisibleFocus(bool WXUNUSED(enabled)) { } // navigates inside this window bool NavigateIn(int flags = wxNavigationKeyEvent::IsForward) { return DoNavigateIn(flags); } // navigates in the specified direction from this window, this is // equivalent to GetParent()->NavigateIn() bool Navigate(int flags = wxNavigationKeyEvent::IsForward) { return m_parent && ((wxWindowBase *)m_parent)->DoNavigateIn(flags); } // this function will generate the appropriate call to Navigate() if the // key event is one normally used for keyboard navigation and return true // in this case bool HandleAsNavigationKey(const wxKeyEvent& event); // move this window just before/after the specified one in tab order // (the other window must be our sibling!) void MoveBeforeInTabOrder(wxWindow *win) { DoMoveInTabOrder(win, OrderBefore); } void MoveAfterInTabOrder(wxWindow *win) { DoMoveInTabOrder(win, OrderAfter); } // parent/children relations // ------------------------- // get the list of children const wxWindowList& GetChildren() const { return m_children; } wxWindowList& GetChildren() { return m_children; } // needed just for extended runtime const wxWindowList& GetWindowChildren() const { return GetChildren() ; } // get the window before/after this one in the parents children list, // returns NULL if this is the first/last window wxWindow *GetPrevSibling() const { return DoGetSibling(OrderBefore); } wxWindow *GetNextSibling() const { return DoGetSibling(OrderAfter); } // 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; // is this window a child or grand child of this one (inside the same // TLW)? bool IsDescendant(wxWindowBase* win) const; // it doesn't really change parent, use Reparent() instead void SetParent( wxWindowBase *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 ); // returns true if the child is in the client area of the window, i.e. is // not scrollbar, toolbar etc. virtual bool IsClientAreaChild(const wxWindow *WXUNUSED(child)) const { return true; } // 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) const; wxWindow *FindWindow(const wxString& name) const; // 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 ); // push/pop event handler: allows to chain a custom event handler to // already 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); // Process an event by calling GetEventHandler()->ProcessEvent(): this // is a straightforward replacement for ProcessEvent() itself which // shouldn't be used directly with windows as it doesn't take into // account any event handlers associated with the window bool ProcessWindowEvent(wxEvent& event) { return GetEventHandler()->ProcessEvent(event); } // Call GetEventHandler()->ProcessEventLocally(): this should be used // instead of calling ProcessEventLocally() directly on the window // itself as this wouldn't take any pushed event handlers into account // correctly bool ProcessWindowEventLocally(wxEvent& event) { return GetEventHandler()->ProcessEventLocally(event); } // Process an event by calling GetEventHandler()->ProcessEvent() and // handling any exceptions thrown by event handlers. It's mostly useful // when processing wx events when called from C code (e.g. in GTK+ // callback) when the exception wouldn't correctly propagate to // wxEventLoop. bool HandleWindowEvent(wxEvent& event) const; // disable wxEvtHandler double-linked list mechanism: virtual void SetNextHandler(wxEvtHandler *handler) wxOVERRIDE; virtual void SetPreviousHandler(wxEvtHandler *handler) wxOVERRIDE; protected: // NOTE: we change the access specifier of the following wxEvtHandler functions // so that the user won't be able to call them directly. // Calling wxWindow::ProcessEvent in fact only works when there are NO // event handlers pushed on the window. // To ensure correct operation, instead of wxWindow::ProcessEvent // you must always call wxWindow::GetEventHandler()->ProcessEvent() // or HandleWindowEvent(). // The same holds for all other wxEvtHandler functions. using wxEvtHandler::ProcessEvent; using wxEvtHandler::ProcessEventLocally; #if wxUSE_THREADS using wxEvtHandler::ProcessThreadEvent; #endif using wxEvtHandler::SafelyProcessEvent; using wxEvtHandler::ProcessPendingEvents; using wxEvtHandler::AddPendingEvent; using wxEvtHandler::QueueEvent; public: // 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 #if wxUSE_HOTKEY // hot keys (system wide accelerators) // ----------------------------------- virtual bool RegisterHotKey(int hotkeyId, int modifiers, int keycode); virtual bool UnregisterHotKey(int hotkeyId); #endif // wxUSE_HOTKEY // translation between different units // ----------------------------------- // Get the DPI used by the given window or wxSize(0, 0) if unknown. virtual wxSize GetDPI() const; // Some ports need to modify the font object when the DPI of the window it // is used with changes, this function can be used to do it. // // Currently it is only used in wxMSW and is not considered to be part of // wxWidgets public API. virtual void WXAdjustFontToOwnPPI(wxFont& WXUNUSED(font)) const { } // DPI-independent pixels, or DIPs, are pixel values for the standard // 96 DPI display, they are scaled to take the current resolution into // account (i.e. multiplied by the same factor as returned by // GetDPIScaleFactor()) if necessary for the current platform. // // To support monitor-specific resolutions, prefer using the non-static // member functions or use a valid (non-null) window pointer. // // Similarly, currently in practice the factor is the same in both // horizontal and vertical directions, but this could, in principle, // change too, so prefer using the overloads taking wxPoint or wxSize. static wxSize FromDIP(const wxSize& sz, const wxWindowBase* w); static wxPoint FromDIP(const wxPoint& pt, const wxWindowBase* w) { const wxSize sz = FromDIP(wxSize(pt.x, pt.y), w); return wxPoint(sz.x, sz.y); } static int FromDIP(int d, const wxWindowBase* w) { return FromDIP(wxSize(d, 0), w).x; } wxSize FromDIP(const wxSize& sz) const { return FromDIP(sz, this); } wxPoint FromDIP(const wxPoint& pt) const { return FromDIP(pt, this); } int FromDIP(int d) const { return FromDIP(d, this); } static wxSize ToDIP(const wxSize& sz, const wxWindowBase* w); static wxPoint ToDIP(const wxPoint& pt, const wxWindowBase* w) { const wxSize sz = ToDIP(wxSize(pt.x, pt.y), w); return wxPoint(sz.x, sz.y); } static int ToDIP(int d, const wxWindowBase* w) { return ToDIP(wxSize(d, 0), w).x; } wxSize ToDIP(const wxSize& sz) const { return ToDIP(sz, this); } wxPoint ToDIP(const wxPoint& pt) const { return ToDIP(pt, this); } int ToDIP(int d) const { return ToDIP(d, this); } // Dialog units are based on the size of the current font. wxPoint ConvertPixelsToDialog( const wxPoint& pt ) const; wxPoint ConvertDialogToPixels( const wxPoint& pt ) const; wxSize ConvertPixelsToDialog( const wxSize& sz ) const { wxPoint pt(ConvertPixelsToDialog(wxPoint(sz.x, sz.y))); return wxSize(pt.x, pt.y); } wxSize ConvertDialogToPixels( const wxSize& sz ) const { 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 // 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 reinterpret_cast(this) == GetCapture(); } // enable the specified touch events for this window, return false if // the requested events are not supported virtual bool EnableTouchEvents(int WXUNUSED(eventsMask)) { return false; } // 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, bool eraseBackground = true) { Refresh(eraseBackground, &rect); } // repaint all invalid areas of the window immediately virtual void Update() { } // clear the window background virtual void ClearBackground(); // freeze the window: don't redraw it until it is thawed void Freeze(); // thaw the window: redraw it after it had been frozen void Thaw(); // return true if window had been frozen and not unthawed yet bool IsFrozen() const { return m_freezeCount != 0; } // adjust DC for drawing on this window virtual void PrepareDC( wxDC & WXUNUSED(dc) ) { } // enable or disable double buffering virtual void SetDoubleBuffered(bool WXUNUSED(on)) { } // return true if the window contents is double buffered by the system virtual bool IsDoubleBuffered() const { return false; } // 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 rectangle region 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 virtual bool DoIsExposed( int x, int y ) const; virtual bool DoIsExposed( int x, int y, int w, int h ) const; bool IsExposed( int x, int y ) const { return DoIsExposed(x, y); } bool IsExposed( int x, int y, int w, int h ) const { return DoIsExposed(x, y, w, h); } bool IsExposed( const wxPoint& pt ) const { return DoIsExposed(pt.x, pt.y); } bool IsExposed( const wxRect& rect ) const { return DoIsExposed(rect.x, rect.y, rect.width, rect.height); } // colours, fonts and cursors // -------------------------- // get the default attributes for the controls of this class: we // provide a virtual function which can be used to query the default // attributes of an existing control and a static function which can // be used even when no existing object of the given class is // available, but which won't return any styles specific to this // particular control, of course (e.g. "Ok" button might have // different -- bold for example -- font) virtual wxVisualAttributes GetDefaultAttributes() const { return GetClassDefaultAttributes(GetWindowVariant()); } static wxVisualAttributes GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL); // set/retrieve the window colours (system defaults are used by // default): SetXXX() functions return true if colour was changed, // SetDefaultXXX() reset the "m_inheritXXX" flag after setting the // value to prevent it from being inherited by our children virtual bool SetBackgroundColour(const wxColour& colour); void SetOwnBackgroundColour(const wxColour& colour) { if ( SetBackgroundColour(colour) ) m_inheritBgCol = false; } wxColour GetBackgroundColour() const; bool InheritsBackgroundColour() const { return m_inheritBgCol; } bool UseBgCol() const { return m_hasBgCol; } bool UseBackgroundColour() const { return UseBgCol(); } virtual bool SetForegroundColour(const wxColour& colour); void SetOwnForegroundColour(const wxColour& colour) { if ( SetForegroundColour(colour) ) m_inheritFgCol = false; } wxColour GetForegroundColour() const; bool UseForegroundColour() const { return m_hasFgCol; } bool InheritsForegroundColour() const { return m_inheritFgCol; } // Set/get the background style. virtual bool SetBackgroundStyle(wxBackgroundStyle style); wxBackgroundStyle GetBackgroundStyle() const { return m_backgroundStyle; } // returns true if the control has "transparent" areas such as a // wxStaticText and wxCheckBox and the background should be adapted // from a parent window virtual bool HasTransparentBackground() { return false; } // Returns true if background transparency is supported for this // window, i.e. if calling SetBackgroundStyle(wxBG_STYLE_TRANSPARENT) // has a chance of succeeding. If reason argument is non-NULL, returns a // user-readable explanation of why it isn't supported if the return // value is false. virtual bool IsTransparentBackgroundSupported(wxString* reason = NULL) const; // set/retrieve the font for the window (SetFont() returns true if the // font really changed) virtual bool SetFont(const wxFont& font) = 0; void SetOwnFont(const wxFont& font) { if ( SetFont(font) ) m_inheritFont = false; } wxFont GetFont() const; // 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; } #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 void GetTextExtent(const wxString& string, int *x, int *y, int *descent = NULL, int *externalLeading = NULL, const wxFont *font = NULL) const { DoGetTextExtent(string, x, y, descent, externalLeading, font); } wxSize GetTextExtent(const wxString& string) const { wxCoord w, h; GetTextExtent(string, &w, &h); return wxSize(w, h); } // 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 from the given flags: this is different from // simply doing flags & wxBORDER_MASK because it uses GetDefaultBorder() to // translate wxBORDER_DEFAULT to something reasonable wxBorder GetBorder(long flags) const; // get border for the flags of this window wxBorder GetBorder() const { return GetBorder(GetWindowStyleFlag()); } // send wxUpdateUIEvents to this window, and children if recurse is true virtual void UpdateWindowUI(long flags = wxUPDATE_UI_NONE); // do the window-specific processing after processing the update event virtual void DoUpdateWindowUI(wxUpdateUIEvent& event) ; #if wxUSE_MENUS // show popup menu at the given position, generate events for the items // selected in it bool PopupMenu(wxMenu *menu, const wxPoint& pos = wxDefaultPosition) { return PopupMenu(menu, pos.x, pos.y); } bool PopupMenu(wxMenu *menu, int x, int y); // simply return the id of the selected item or wxID_NONE without // generating any events int GetPopupMenuSelectionFromUser(wxMenu& menu, const wxPoint& pos = wxDefaultPosition) { return DoGetPopupMenuSelectionFromUser(menu, pos.x, pos.y); } int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y) { return DoGetPopupMenuSelectionFromUser(menu, x, y); } #endif // wxUSE_MENUS // override this method to return true for controls having multiple pages virtual bool HasMultiplePages() const { return false; } // scrollbars // ---------- // can the window have the scrollbar in this orientation? virtual bool CanScroll(int orient) const; // does the window have the scrollbar in this orientation? bool HasScrollbar(int orient) const; // 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 = 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); } // call this to always show one or both scrollbars, even if the window // is big enough to not require them virtual void AlwaysShowScrollbars(bool WXUNUSED(horz) = true, bool WXUNUSED(vert) = true) { } // return true if AlwaysShowScrollbars() had been called before for the // corresponding orientation virtual bool IsScrollbarAlwaysShown(int WXUNUSED(orient)) const { return false; } // 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); #if WXWIN_COMPATIBILITY_2_8 // Associate this help text with all windows with the same id as this one. // Don't use this, do wxHelpProvider::Get()->AddHelp(id, text); wxDEPRECATED( void SetHelpTextForId(const wxString& text) ); #endif // WXWIN_COMPATIBILITY_2_8 // get the help string associated with the given position in this window // // notice that pt may be invalid if event origin is keyboard or unknown // and this method should return the global window help text then virtual wxString GetHelpTextAtPoint(const wxPoint& pt, wxHelpEvent::Origin origin) const; // returns the position-independent help text wxString GetHelpText() const { return GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Unknown); } #else // !wxUSE_HELP // silently ignore SetHelpText() calls void SetHelpText(const wxString& WXUNUSED(text)) { } void SetHelpTextForId(const wxString& WXUNUSED(text)) { } #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 ) { DoSetToolTipText(tip); } // attach a tooltip to the window, pointer can be NULL to remove // existing tooltip void SetToolTip( wxToolTip *tip ) { DoSetToolTip(tip); } // more readable synonym for SetToolTip(NULL) void UnsetToolTip() { SetToolTip(NULL); } // get the associated tooltip or NULL if none wxToolTip* GetToolTip() const { return m_tooltip; } wxString GetToolTipText() const; // Use the same tool tip as the given one (which can be NULL to indicate // that no tooltip should be used) for this window. This is currently only // used by wxCompositeWindow::DoSetToolTip() implementation and is not part // of the public wx API. // // Returns true if tip was valid and we copied it or false if it was NULL // and we reset our own tooltip too. bool CopyToolTip(wxToolTip *tip); #else // !wxUSE_TOOLTIPS // make it much easier to compile apps in an environment // that doesn't support tooltips void SetToolTip(const wxString & WXUNUSED(tip)) { } void UnsetToolTip() { } #endif // wxUSE_TOOLTIPS/!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; } // Accept files for dragging virtual void DragAcceptFiles(bool accept) #ifdef __WXMSW__ // it does have common implementation but not for MSW which has its own // native version of it = 0 #endif // __WXMSW__ ; #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 overridden 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); wxSizer *GetContainingSizer() const { return m_containingSizer; } // accessibility // ---------------------- #if wxUSE_ACCESSIBILITY // Override to create a specific accessible object. virtual wxAccessible* CreateAccessible() { return NULL; } // Sets the accessible object. void SetAccessible(wxAccessible* accessible) ; // Returns the accessible object. wxAccessible* GetAccessible() { return m_accessible; } // Returns the accessible object, calling CreateAccessible if necessary. // May return NULL, in which case system-provide accessible is used. wxAccessible* GetOrCreateAccessible() ; #endif // Set window transparency if the platform supports it virtual bool SetTransparent(wxByte WXUNUSED(alpha)) { return false; } virtual bool CanSetTransparent() { return false; } // 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 // virtual function for implementing internal idle // behaviour virtual void OnInternalIdle(); // Send idle event to window and all subwindows // Returns true if more idle time is requested. virtual bool SendIdleEvents(wxIdleEvent& event); // Send wxContextMenuEvent and return true if it was processed. // // Note that the event may end up being sent to a different window, if this // window is part of a composite control. bool WXSendContextMenuEvent(const wxPoint& posInScreenCoords); // This internal function needs to be called to set the fitting client size // (i.e. the minimum size determined by the window sizer) when the size // that we really need to use is not known until the window is actually // shown, as is the case for TLWs with recent GTK versions, as it will // update the size again when it does become known, if necessary. virtual void WXSetInitialFittingClientSize(int flags); // get the handle 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; // associate the window with a new native handle virtual void AssociateHandle(WXWidget WXUNUSED(handle)) { } // dissociate the current native handle from the window virtual void DissociateHandle() { } #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 // inherit the parents visual attributes if they had been explicitly set // by the user (i.e. we don't inherit default attributes) and if we don't // have our own explicitly set virtual void InheritAttributes(); // returns false from here if this window doesn't want to inherit the // parents colours even if InheritAttributes() would normally do it // // this just provides a simple way to customize InheritAttributes() // behaviour in the most common case virtual bool ShouldInheritColours() const { return false; } // returns true if the window can be positioned outside of parent's client // area (normal windows can't, but e.g. menubar or statusbar can): virtual bool CanBeOutsideClientArea() const { return false; } // returns true if the platform should explicitly apply a theme border. Currently // used only by Windows virtual bool CanApplyThemeBorder() const { return true; } // returns the main window of composite control; this is the window // that FindFocus returns if the focus is in one of composite control's // windows virtual wxWindow *GetMainWindowOfCompositeControl() { return (wxWindow*)this; } enum NavigationKind { Navigation_Tab, Navigation_Accel }; // If this function returns true, keyboard events of the given kind can't // escape from it. A typical example of such "navigation domain" is a top // level window because pressing TAB in one of them must not transfer focus // to a different top level window. But it's not limited to them, e.g. MDI // children frames are not top level windows (and their IsTopLevel() // returns false) but still are self-contained navigation domains for the // purposes of TAB navigation -- but not for the accelerators. virtual bool IsTopNavigationDomain(NavigationKind WXUNUSED(kind)) const { return false; } // This is an internal helper function implemented by text-like controls. virtual const wxTextEntry* WXGetTextEntry() const { return NULL; } protected: // helper for the derived class Create() methods: the first overload, with // validator parameter, should be used for child windows while the second // one is used for top level ones bool CreateBase(wxWindowBase *parent, wxWindowID winid, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, const wxValidator& validator = wxDefaultValidator, const wxString& name = wxASCII_STR(wxPanelNameStr)); bool CreateBase(wxWindowBase *parent, wxWindowID winid, const wxPoint& pos, const wxSize& size, long style, const wxString& name); // event handling specific to wxWindow virtual bool TryBefore(wxEvent& event) wxOVERRIDE; virtual bool TryAfter(wxEvent& event) wxOVERRIDE; enum WindowOrder { OrderBefore, // insert before the given window OrderAfter // insert after the given window }; // common part of GetPrev/NextSibling() wxWindow *DoGetSibling(WindowOrder order) const; // common part of MoveBefore/AfterInTabOrder() virtual void DoMoveInTabOrder(wxWindow *win, WindowOrder move); // implementation of Navigate() and NavigateIn() virtual bool DoNavigateIn(int flags); #if wxUSE_CONSTRAINTS // satisfy the constraints for the windows but don't set the window sizes void SatisfyConstraints(); #endif // wxUSE_CONSTRAINTS // Send the wxWindowDestroyEvent if not done yet and sets m_isBeingDeleted // to true void SendDestroyEvent(); // this method should be implemented to use operating system specific code // to really enable/disable the widget, it will only be called when we // really need to enable/disable window and so no additional checks on the // widgets state are necessary virtual void DoEnable(bool WXUNUSED(enable)) { } // the window id - a number which uniquely identifies a window among // its siblings unless it is wxID_ANY wxWindowIDRef 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) wxDefaultCoord) 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; // see m_hasFont wxColour m_backgroundColour, // m_hasBgCol m_foregroundColour; // m_hasFgCol #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; // and should it be inherited by children? bool m_inheritBgCol:1; bool m_inheritFgCol:1; bool m_inheritFont:1; // flag disabling accepting focus from keyboard bool m_disableFocusFromKbd:1; // window attributes long m_windowStyle, m_exStyle; wxString m_windowName; bool m_themeEnabled; wxBackgroundStyle m_backgroundStyle; #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; wxScrollHelper *m_scrollHelper; wxWindowVariant m_windowVariant ; // override this to change the default (i.e. used when no style is // specified) border for the window class virtual wxBorder GetDefaultBorder() const; // this allows you to implement standard control borders without // repeating the code in different classes that are not derived from // wxControl virtual wxBorder GetDefaultBorderForControl() const { return wxBORDER_THEME; } // Get the default size for the new window if no explicit size given. TLWs // have their own default size so this is just for non top-level windows. static int WidthDefault(int w) { return w == wxDefaultCoord ? 20 : w; } static int HeightDefault(int h) { return h == wxDefaultCoord ? 20 : h; } // Used to save the results of DoGetBestSize so it doesn't need to be // recalculated each time the value is needed. wxSize m_bestSizeCache; #if WXWIN_COMPATIBILITY_2_8 wxDEPRECATED_MSG("use SetInitialSize() instead.") void SetBestSize(const wxSize& size); wxDEPRECATED_MSG("use SetInitialSize() instead.") virtual void SetInitialBestSize(const wxSize& size); #endif // WXWIN_COMPATIBILITY_2_8 // 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. // text extent virtual void DoGetTextExtent(const wxString& string, int *x, int *y, int *descent = NULL, int *externalLeading = NULL, const wxFont *font = NULL) const = 0; // 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 DoGetScreenPosition(int *x, int *y) const; 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 method can be overridden instead of DoGetBestSize() if it computes // the best size of the client area of the window only, excluding borders // (GetBorderSize() will be used to add them) virtual wxSize DoGetBestClientSize() const { return wxDefaultSize; } // These two methods can be overridden to implement intelligent // width-for-height and/or height-for-width best size determination for the // window. By default the fixed best size is used. virtual int DoGetBestClientHeight(int WXUNUSED(width)) const { return wxDefaultCoord; } virtual int DoGetBestClientWidth(int WXUNUSED(height)) const { return wxDefaultCoord; } // this is the virtual function to be overridden 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; virtual void DoSetSizeHints( int minW, int minH, int maxW, int maxH, int incW, int incH ); // return the total size of the window borders, i.e. the sum of the widths // of the left and the right border in the x component of the returned size // and the sum of the heights of the top and bottom borders in the y one // // NB: this is currently only implemented properly for wxMSW, wxGTK and // wxUniv and doesn't behave correctly in the presence of scrollbars in // the other ports virtual wxSize DoGetBorderSize() const; // 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 // // Important note: the coordinates passed to this method are in parent's // *window* coordinates and not parent's client coordinates (as the values // passed to DoSetSize and returned by DoGetPosition are)! virtual void DoMoveWindow(int x, int y, int width, int height) = 0; // centre the window in the specified direction on parent, note that // wxCENTRE_ON_SCREEN shouldn't be specified here, it only makes sense for // TLWs virtual void DoCentre(int dir); #if wxUSE_TOOLTIPS virtual void DoSetToolTipText( const wxString &tip ); 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 to make it relative to the // parents client area, e.g. if the parent is a frame with a toolbar, its // (0, 0) is just below the toolbar virtual void AdjustForParentClientOrigin(int& x, int& y, int sizeFlags = 0) const; // implements the window variants virtual void DoSetWindowVariant( wxWindowVariant variant ) ; // really freeze/thaw the window (should have port-specific implementation) virtual void DoFreeze() { } virtual void DoThaw() { } // Must be called when mouse capture is lost to send // wxMouseCaptureLostEvent to windows on capture stack. static void NotifyCaptureLost(); private: // recursively call our own and our children DoEnable() when the // enabled/disabled status changed because a parent window had been // enabled/disabled void NotifyWindowOnEnableChange(bool enabled); #if wxUSE_MENUS // temporary event handlers used by GetPopupMenuSelectionFromUser() void InternalOnPopupMenu(wxCommandEvent& event); void InternalOnPopupMenuUpdate(wxUpdateUIEvent& event); // implementation of the public GetPopupMenuSelectionFromUser() method int DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y); #endif // wxUSE_MENUS // layout the window children when its size changes unless this was // explicitly disabled with SetAutoLayout(false) void InternalOnSize(wxSizeEvent& event); // base for dialog unit conversion, i.e. average character size wxSize GetDlgUnitBase() const; // number of Freeze() calls minus the number of Thaw() calls: we're frozen // (i.e. not being updated) if it is positive unsigned int m_freezeCount; wxDECLARE_ABSTRACT_CLASS(wxWindowBase); wxDECLARE_NO_COPY_CLASS(wxWindowBase); wxDECLARE_EVENT_TABLE(); }; #if WXWIN_COMPATIBILITY_2_8 // Inlines for some deprecated methods inline wxSize wxWindowBase::GetBestFittingSize() const { return GetEffectiveMinSize(); } inline void wxWindowBase::SetBestFittingSize(const wxSize& size) { SetInitialSize(size); } inline void wxWindowBase::SetBestSize(const wxSize& size) { SetInitialSize(size); } inline void wxWindowBase::SetInitialBestSize(const wxSize& size) { SetInitialSize(size); } #endif // WXWIN_COMPATIBILITY_2_8 // ---------------------------------------------------------------------------- // 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 #endif // wxUniv/!wxUniv #include "wx/msw/window.h" #elif defined(__WXMOTIF__) #include "wx/motif/window.h" #elif defined(__WXGTK20__) #ifdef __WXUNIVERSAL__ #define wxWindowNative wxWindowGTK #else // !wxUniv #define wxWindowGTK wxWindow #endif // wxUniv #include "wx/gtk/window.h" #ifdef __WXGTK3__ #define wxHAVE_DPI_INDEPENDENT_PIXELS #endif #elif defined(__WXGTK__) #ifdef __WXUNIVERSAL__ #define wxWindowNative wxWindowGTK #else // !wxUniv #define wxWindowGTK wxWindow #endif // wxUniv #include "wx/gtk1/window.h" #elif defined(__WXX11__) #ifdef __WXUNIVERSAL__ #define wxWindowNative wxWindowX11 #else // !wxUniv #define wxWindowX11 wxWindow #endif // wxUniv #include "wx/x11/window.h" #elif defined(__WXDFB__) #define wxWindowNative wxWindowDFB #include "wx/dfb/window.h" #elif defined(__WXMAC__) #ifdef __WXUNIVERSAL__ #define wxWindowNative wxWindowMac #else // !wxUniv #define wxWindowMac wxWindow #endif // wxUniv #include "wx/osx/window.h" #define wxHAVE_DPI_INDEPENDENT_PIXELS #elif defined(__WXQT__) #ifdef __WXUNIVERSAL__ #define wxWindowNative wxWindowQt #else // !wxUniv #define wxWindowQt wxWindow #endif // wxUniv #include "wx/qt/window.h" #endif // for wxUniversal, we now derive the real wxWindow from wxWindow, // 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() : NULL; } #ifdef wxHAVE_DPI_INDEPENDENT_PIXELS // FromDIP() and ToDIP() become trivial in this case, so make them inline to // avoid any overhead. /* static */ inline wxSize wxWindowBase::FromDIP(const wxSize& sz, const wxWindowBase* WXUNUSED(w)) { return sz; } /* static */ inline wxSize wxWindowBase::ToDIP(const wxSize& sz, const wxWindowBase* WXUNUSED(w)) { return sz; } #endif // wxHAVE_DPI_INDEPENDENT_PIXELS // ---------------------------------------------------------------------------- // global functions // ---------------------------------------------------------------------------- // Find the wxWindow at the current mouse position, also returning the mouse // position. extern WXDLLIMPEXP_CORE wxWindow* wxFindWindowAtPointer(wxPoint& pt); // Get the current mouse position. extern WXDLLIMPEXP_CORE wxPoint wxGetMousePosition(); // get the currently active window of this application or NULL extern WXDLLIMPEXP_CORE wxWindow *wxGetActiveWindow(); // get the (first) top level parent window WXDLLIMPEXP_CORE wxWindow* wxGetTopLevelParent(wxWindowBase *win); #if wxUSE_ACCESSIBILITY // ---------------------------------------------------------------------------- // accessible object for windows // ---------------------------------------------------------------------------- class WXDLLIMPEXP_CORE 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) wxOVERRIDE; // Returns the rectangle for this object (id = 0) or a child element (id > 0). virtual wxAccStatus GetLocation(wxRect& rect, int elementId) wxOVERRIDE; // Navigates from fromId to toId/toObject. virtual wxAccStatus Navigate(wxNavDir navDir, int fromId, int* toId, wxAccessible** toObject) wxOVERRIDE; // Gets the name of the specified object. virtual wxAccStatus GetName(int childId, wxString* name) wxOVERRIDE; // Gets the number of children. virtual wxAccStatus GetChildCount(int* childCount) wxOVERRIDE; // 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) wxOVERRIDE; // Gets the parent, or NULL. virtual wxAccStatus GetParent(wxAccessible** parent) wxOVERRIDE; // 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) wxOVERRIDE; // 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) wxOVERRIDE; // Returns the description for this object or a child. virtual wxAccStatus GetDescription(int childId, wxString* description) wxOVERRIDE; // Returns help text for this object or a child, similar to tooltip text. virtual wxAccStatus GetHelpText(int childId, wxString* helpText) wxOVERRIDE; // Returns the keyboard shortcut for this object or child. // Return e.g. ALT+K virtual wxAccStatus GetKeyboardShortcut(int childId, wxString* shortcut) wxOVERRIDE; // Returns a role constant. virtual wxAccStatus GetRole(int childId, wxAccRole* role) wxOVERRIDE; // Returns a state constant. virtual wxAccStatus GetState(int childId, long* state) wxOVERRIDE; // Returns a localized string representing the value for the object // or child. virtual wxAccStatus GetValue(int childId, wxString* strValue) wxOVERRIDE; // Selects the object or child. virtual wxAccStatus Select(int childId, wxAccSelectionFlags selectFlags) wxOVERRIDE; // 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) wxOVERRIDE; #if wxUSE_VARIANT // 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) wxOVERRIDE; #endif // wxUSE_VARIANT }; #endif // wxUSE_ACCESSIBILITY #endif // _WX_WINDOW_H_BASE_