///////////////////////////////////////////////////////////////////////////// // Name: wx/gtk/window.h // Purpose: // Author: Robert Roebling // Id: $Id$ // Copyright: (c) 1998 Robert Roebling // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_GTK_WINDOW_H_ #define _WX_GTK_WINDOW_H_ #include "wx/dynarray.h" // helper structure that holds class that holds GtkIMContext object and // some additional data needed for key events processing struct wxGtkIMData; WX_DEFINE_EXPORTED_ARRAY_PTR(GdkWindow *, wxArrayGdkWindows); //----------------------------------------------------------------------------- // callback definition for inserting a window (internal) //----------------------------------------------------------------------------- class WXDLLIMPEXP_CORE wxWindowGTK; typedef void (*wxInsertChildFunction)( wxWindowGTK*, wxWindowGTK* ); //----------------------------------------------------------------------------- // wxWindowGTK //----------------------------------------------------------------------------- class WXDLLIMPEXP_CORE wxWindowGTK : public wxWindowBase { public: // creating the window // ------------------- wxWindowGTK(); wxWindowGTK(wxWindow *parent, wxWindowID id, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = wxPanelNameStr); bool Create(wxWindow *parent, wxWindowID id, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = wxPanelNameStr); virtual ~wxWindowGTK(); // implement base class (pure) virtual methods // ------------------------------------------- virtual void SetLabel(const wxString& WXUNUSED(label)) { } virtual wxString GetLabel() const { return wxEmptyString; } virtual bool Destroy(); virtual void Raise(); virtual void Lower(); virtual bool Show( bool show = true ); virtual bool Enable( bool enable = true ); virtual void SetWindowStyleFlag( long style ); virtual bool IsRetained() const; virtual void SetFocus(); virtual bool AcceptsFocus() const; virtual bool Reparent( wxWindowBase *newParent ); virtual void WarpPointer(int x, int y); virtual void Refresh( bool eraseBackground = true, const wxRect *rect = (const wxRect *) NULL ); virtual void Update(); virtual void ClearBackground(); virtual bool SetBackgroundColour( const wxColour &colour ); virtual bool SetForegroundColour( const wxColour &colour ); virtual bool SetCursor( const wxCursor &cursor ); virtual bool SetFont( const wxFont &font ); virtual bool SetBackgroundStyle(wxBackgroundStyle style) ; virtual int GetCharHeight() const; virtual int GetCharWidth() const; 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; virtual void SetScrollbar( int orient, int pos, int thumbVisible, int range, bool refresh = true ); virtual void SetScrollPos( int orient, int pos, bool refresh = true ); virtual int GetScrollPos( int orient ) const; virtual int GetScrollThumb( int orient ) const; virtual int GetScrollRange( int orient ) const; virtual void ScrollWindow( int dx, int dy, const wxRect* rect = (wxRect *) NULL ); virtual bool ScrollLines(int lines); virtual bool ScrollPages(int pages); #if wxUSE_DRAG_AND_DROP virtual void SetDropTarget( wxDropTarget *dropTarget ); #endif // wxUSE_DRAG_AND_DROP virtual void AddChild( wxWindowBase *child ); virtual void RemoveChild( wxWindowBase *child ); virtual void SetLayoutDirection(wxLayoutDirection dir); virtual wxLayoutDirection GetLayoutDirection() const; // currently wxGTK2-only void SetDoubleBuffered(bool on); // implementation // -------------- virtual WXWidget GetHandle() const { return m_widget; } // many important things are done here, this function must be called // regularly virtual void OnInternalIdle(); // Internal represention of Update() void GtkUpdate(); // For compatibility across platforms (not in event table) void OnIdle(wxIdleEvent& WXUNUSED(event)) {} // wxGTK-specific: called recursively by Enable, // to give widgets an opportunity to correct their colours after they // have been changed by Enable virtual void OnParentEnable( bool WXUNUSED(enable) ) {} // Used by all window classes in the widget creation process. bool PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size ); void PostCreation(); // Internal addition of child windows. differs from class // to class not by using virtual functions but by using // the m_insertCallback. void DoAddChild(wxWindowGTK *child); // This methods sends wxPaintEvents to the window. It reads the // update region, breaks it up into rects and sends an event // for each rect. It is also responsible for background erase // events and NC paint events. It is called from "draw" and // "expose" handlers as well as from ::Update() void GtkSendPaintEvents(); // The methods below are required because many native widgets // are composed of several subwidgets and setting a style for // the widget means setting it for all subwidgets as well. // also, it is not clear which native widget is the top // widget where (most of) the input goes. even tooltips have // to be applied to all subwidgets. virtual GtkWidget* GetConnectWidget(); void ConnectWidget( GtkWidget *widget ); // Called from several event handlers, if it returns true or false, the // same value should be immediately returned by the handler without doing // anything else. If it returns -1, the handler should continue as usual int GTKCallbackCommonPrologue(struct _GdkEventAny *event) const; // override this if some events should never be consumed by wxWidgets but // but have to be left for the native control // // base version just does GetEventHandler()->ProcessEvent() virtual bool GTKProcessEvent(wxEvent& event) const; // Map GTK widget direction of the given widget to/from wxLayoutDirection static wxLayoutDirection GTKGetLayout(GtkWidget *widget); static void GTKSetLayout(GtkWidget *widget, wxLayoutDirection dir); protected: // Override GTKWidgetNeedsMnemonic and return true if your // needs to set its mnemonic widget, such as for a // GtkLabel for wxStaticText, then do the actual // setting of the widget inside GTKWidgetDoSetMnemonic virtual bool GTKWidgetNeedsMnemonic() const; virtual void GTKWidgetDoSetMnemonic(GtkWidget* w); // Get the GdkWindows making part of this window: usually there will be // only one of them in which case it should be returned directly by this // function. If there is more than one GdkWindow (can be the case for // composite widgets), return NULL and fill in the provided array // // This is not pure virtual for backwards compatibility but almost // certainly must be overridden in any wxControl-derived class! virtual GdkWindow *GTKGetWindow(wxArrayGdkWindows& windows) const; // Check if the given window makes part of this widget bool GTKIsOwnWindow(GdkWindow *window) const; // Set the focus to this window if its setting was delayed because the // widget hadn't been realized when SetFocus() was called // // Return true if focus was set to us, false if nothing was done bool GTKSetDelayedFocusIfNeeded(); public: // Returns the default context which usually is anti-aliased PangoContext *GtkGetPangoDefaultContext(); #if wxUSE_TOOLTIPS virtual void ApplyToolTip( GtkTooltips *tips, const wxChar *tip ); #endif // wxUSE_TOOLTIPS // Called from GTK signal handlers. it indicates that // the layouting functions have to be called later on // (i.e. in idle time, implemented in OnInternalIdle() ). void GtkUpdateSize() { m_sizeSet = false; } // Called when a window should delay showing itself // until idle time. This partly mimmicks defered // sizing under MSW. void GtkShowOnIdle() { m_showOnIdle = true; } // This is called from the various OnInternalIdle methods bool GtkShowFromOnIdle(); // fix up the mouse event coords, used by wxListBox only so far virtual void FixUpMouseEvent(GtkWidget * WXUNUSED(widget), wxCoord& WXUNUSED(x), wxCoord& WXUNUSED(y)) { } // is this window transparent for the mouse events (as wxStaticBox is)? virtual bool IsTransparentForMouse() const { return false; } // is this a radiobutton (used by radiobutton code itself only)? virtual bool IsRadioButton() const { return false; } // Common scroll event handling code for wxWindow and wxScrollBar wxEventType GetScrollEventType(GtkRange* range); void BlockScrollEvent(); void UnblockScrollEvent(); // position and size of the window int m_x, m_y; int m_width, m_height; int m_oldClientWidth,m_oldClientHeight; // see the docs in src/gtk/window.cpp GtkWidget *m_widget; // mostly the widget seen by the rest of GTK GtkWidget *m_wxwindow; // mostly the client area as per wxWidgets // this widget will be queried for GTK's focus events GtkWidget *m_focusWidget; wxGtkIMData *m_imData; // indices for the arrays below enum ScrollDir { ScrollDir_Horz, ScrollDir_Vert, ScrollDir_Max }; // horizontal/vertical scroll bar GtkRange* m_scrollBar[ScrollDir_Max]; // horizontal/vertical scroll position double m_scrollPos[ScrollDir_Max]; // if true, don't notify about adjustment change (without resetting the // flag, so this has to be done manually) bool m_blockValueChanged[ScrollDir_Max]; // return the scroll direction index corresponding to the given orientation // (which is wxVERTICAL or wxHORIZONTAL) static ScrollDir ScrollDirFromOrient(int orient) { return orient == wxVERTICAL ? ScrollDir_Vert : ScrollDir_Horz; } // return the orientation for the given scrolling direction static int OrientFromScrollDir(ScrollDir dir) { return dir == ScrollDir_Horz ? wxHORIZONTAL : wxVERTICAL; } // find the direction of the given scrollbar (must be one of ours) ScrollDir ScrollDirFromRange(GtkRange *range) const; // extra (wxGTK-specific) flags bool m_needParent:1; // ! wxFrame, wxDialog, wxNotebookPage ? bool m_noExpose:1; // wxGLCanvas has its own redrawing bool m_nativeSizeEvent:1; // wxGLCanvas sends wxSizeEvent upon "alloc_size" bool m_hasScrolling:1; bool m_hasVMT:1; bool m_sizeSet:1; bool m_resizing:1; bool m_acceptsFocus:1; // true if not static bool m_hasFocus:1; // true if == FindFocus() bool m_isScrolling:1; // dragging scrollbar thumb? bool m_clipPaintRegion:1; // true after ScrollWindow() bool m_dirtyTabOrder:1; // tab order changed, GTK focus // chain needs update bool m_needsStyleChange:1; // May not be able to change // background style until OnIdle bool m_mouseButtonDown:1; bool m_blockScrollEvent:1; bool m_showOnIdle:1; // postpone showing the window until idle // C++ has no virtual methods in the constrcutor of any class but we need // different methods of inserting a child window into a wxFrame, // wxMDIFrame, wxNotebook etc. this is the callback that will get used. wxInsertChildFunction m_insertCallback; protected: // implement the base class pure virtuals virtual void DoClientToScreen( int *x, int *y ) const; virtual void DoScreenToClient( int *x, int *y ) const; virtual void DoGetPosition( int *x, int *y ) const; virtual void DoGetSize( int *width, int *height ) const; virtual void DoGetClientSize( int *width, int *height ) const; virtual void DoSetSize(int x, int y, int width, int height, int sizeFlags = wxSIZE_AUTO); virtual void DoSetClientSize(int width, int height); virtual void DoMoveWindow(int x, int y, int width, int height); #if wxUSE_MENUS_NATIVE virtual bool DoPopupMenu( wxMenu *menu, int x, int y ); #endif // wxUSE_MENUS_NATIVE virtual void DoCaptureMouse(); virtual void DoReleaseMouse(); #if wxUSE_TOOLTIPS virtual void DoSetToolTip( wxToolTip *tip ); #endif // wxUSE_TOOLTIPS // common part of all ctors (not virtual because called from ctor) void Init(); virtual void DoMoveInTabOrder(wxWindow *win, MoveKind move); // Copies m_children tab order to GTK focus chain: void RealizeTabOrder(); // Called by ApplyWidgetStyle (which is called by SetFont() and // SetXXXColour etc to apply style changed to native widgets) to create // modified GTK style with non-standard attributes. If forceStyle=true, // creates empty GtkRcStyle if there are no modifications, otherwise // returns NULL in such case. GtkRcStyle *CreateWidgetStyle(bool forceStyle = false); // Overridden in many GTK widgets who have to handle subwidgets virtual void ApplyWidgetStyle(bool forceStyle = false); // helper function to ease native widgets wrapping, called by // ApplyWidgetStyle -- override this, not ApplyWidgetStyle virtual void DoApplyWidgetStyle(GtkRcStyle *style); // sets the border of a given GtkScrolledWindow from a wx style static void GtkScrolledWindowSetBorder(GtkWidget* w, int style); // set the current cursor for all GdkWindows making part of this widget // (see GTKGetWindow) // // should be called from OnInternalIdle() if it's overridden void GTKUpdateCursor(); private: enum ScrollUnit { ScrollUnit_Line, ScrollUnit_Page, ScrollUnit_Max }; // common part of ScrollLines() and ScrollPages() and could be used, in the // future, for horizontal scrolling as well // // return true if we scrolled, false otherwise (on error or simply if we // are already at the end) bool DoScrollByUnits(ScrollDir dir, ScrollUnit unit, int units); DECLARE_DYNAMIC_CLASS(wxWindowGTK) DECLARE_NO_COPY_CLASS(wxWindowGTK) }; extern WXDLLIMPEXP_CORE wxWindow *wxFindFocusedChild(wxWindowGTK *win); #endif // _WX_GTK_WINDOW_H_