X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c04c7a3d0ae9f09bd7219b97799d9b185f1c2bab..cc5bd48eff6f3a12b6066179d1b00d6404c9d921:/include/wx/window.h diff --git a/include/wx/window.h b/include/wx/window.h index 04b76e9670..4c62a7d035 100644 --- a/include/wx/window.h +++ b/include/wx/window.h @@ -49,6 +49,19 @@ #define wxUSE_MENUS_NATIVE wxUSE_MENUS #endif // __WXUNIVERSAL__/!__WXUNIVERSAL__ + +// Define this macro if the corresponding operating system handles the state +// of children windows automatically when the parent is enabled/disabled. +// Otherwise wx itself must ensure that when the parent is disabled its +// children are disabled too, and their initial state is restored when the +// parent is enabled back. +#if defined(__WXMSW__) || defined(__WXPM__) + // must do everything ourselves + #undef wxHAS_NATIVE_ENABLED_MANAGEMENT +#else + #define wxHAS_NATIVE_ENABLED_MANAGEMENT +#endif + // ---------------------------------------------------------------------------- // forward declarations // ---------------------------------------------------------------------------- @@ -366,7 +379,7 @@ public: void SetInitialSize(const wxSize& size=wxDefaultSize); wxDEPRECATED( void SetBestFittingSize(const wxSize& size=wxDefaultSize) ); // replaced by SetInitialSize - + // 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 @@ -389,7 +402,7 @@ public: // 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 ) @@ -416,14 +429,14 @@ public: } - // Call these to override what GetBestSize() returns. This + // Call these to override what GetBestSize() returns. This // method is only virtual because it is overriden in wxTLW // as a different API for SetSizeHints(). virtual void SetMinSize(const wxSize& minSize) { m_minWidth = minSize.x; m_minHeight = minSize.y; } virtual void SetMaxSize(const wxSize& maxSize) { m_maxWidth = maxSize.x; m_maxHeight = maxSize.y; } // Override these methods to impose restrictions on min/max size. - // The easier way is to call SetMinSize() and SetMaxSize() which + // 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); } @@ -491,7 +504,21 @@ public: bool Disable() { return Enable(false); } virtual bool IsShown() const { return m_isShown; } - virtual bool IsEnabled() const { return m_isEnabled; } + // 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) + 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 @@ -544,16 +571,38 @@ public: static wxWindow *DoFindFocus() /* = 0: implement in derived classes */; - // can this window have focus? - virtual bool AcceptsFocus() const { return IsShown() && IsEnabled(); } + // 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 have focus right now? + bool CanAcceptFocus() const { return AcceptsFocus() && IsShown() && IsEnabled(); } // can this window be given focus by keyboard navigation? if not, the // only way to give it focus (provided it accepts it at all) is to // click it virtual bool AcceptsFocusFromKeyboard() const { return AcceptsFocus(); } - // navigates in the specified direction by sending a wxNavigationKeyEvent - virtual bool Navigate(int flags = wxNavigationKeyEvent::IsForward); + // can this window be assigned focus from keyboard right now? + bool CanAcceptFocusFromKeyboard() const + { return AcceptsFocusFromKeyboard() && CanAcceptFocus(); } + + // call this when the return value of AcceptsFocus() changes + virtual void SetCanFocus(bool WXUNUSED(canFocus)) { } + + // 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); } // move this window just before/after the specified one in tab order // (the other window must be our sibling!) @@ -856,6 +905,13 @@ public: const wxFont *theFont = (const wxFont *) NULL) const = 0; + wxSize GetTextExtent(const wxString& string) const + { + wxCoord w, h; + GetTextExtent(string, &w, &h); + return wxSize(w, h); + } + // client <-> screen coords // ------------------------ @@ -1153,6 +1209,10 @@ protected: }; virtual void DoMoveInTabOrder(wxWindow *win, MoveKind 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(); @@ -1167,6 +1227,18 @@ protected: virtual wxWindow *GetMainWindowOfCompositeControl() { return (wxWindow*)this; } + // 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)) { } + + // called when the on-screen widget state changes and provides an + // an opportunity for the widget to update its visual state (colours, + // fonts, anything else) as necessary + virtual void OnEnabled(bool WXUNUSED(enabled)) { } + + // the window id - a number which uniquely identifies a window among // its siblings unless it is wxID_ANY wxWindowID m_windowId; @@ -1387,6 +1459,12 @@ protected: static void NotifyCaptureLost(); private: + // recursively call our own and our children OnEnabled() when the + // enabled/disabled status changed because a parent window had been + // enabled/disabled + void NotifyWindowOnEnableChange(bool enabled); + + // contains the last id generated by NewControlId static int ms_lastControlId;