Prevent seg fault for older GTK+

[wxWidgets.git] / include / wx / gtk1 / window.h

diff --git a/include/wx/gtk1/window.h b/include/wx/gtk1/window.h
index 8fafeca033dd800510c1325c7ccecdc593f17aff..c1f6a490cc0724d54cba999cf42c7fe00a22508b 100644 (file)
--- a/include/wx/gtk1/window.h
+++ b/include/wx/gtk1/window.h
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        wx/gtk/window.h
+// Name:        wx/gtk1/window.h

 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$


@@ -7,26 +7,25 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-

 #ifndef __GTKWINDOWH__
 #define __GTKWINDOWH__
 
 #ifndef __GTKWINDOWH__
 #define __GTKWINDOWH__
 

-#ifdef __GNUG__
-    #pragma interface
-#endif
+// helper structure that holds class that holds GtkIMContext object and
+// some additional data needed for key events processing
+struct wxGtkIMData;

 
 //-----------------------------------------------------------------------------
 // callback definition for inserting a window (internal)
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // callback definition for inserting a window (internal)
 //-----------------------------------------------------------------------------
 

-class wxWindowGTK;
+class WXDLLIMPEXP_CORE wxWindowGTK;

 typedef void (*wxInsertChildFunction)( wxWindowGTK*, wxWindowGTK* );
 
 //-----------------------------------------------------------------------------
 // wxWindowGTK
 //-----------------------------------------------------------------------------
 
 typedef void (*wxInsertChildFunction)( wxWindowGTK*, wxWindowGTK* );
 
 //-----------------------------------------------------------------------------
 // wxWindowGTK
 //-----------------------------------------------------------------------------
 

-class wxWindowGTK : public wxWindowBase
+class WXDLLIMPEXP_CORE wxWindowGTK : public wxWindowBase

 {
 public:
     // creating the window
 {
 public:
     // creating the window


@@ -48,13 +47,19 @@ public:
 
     // implement base class (pure) virtual methods
     // -------------------------------------------
 
     // 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 Destroy();
 
     virtual void Raise();
     virtual void Lower();
 

-    virtual bool Show( bool show = TRUE );
-    virtual bool Enable( bool enable = TRUE );
+    virtual bool Show( bool show = true );
+    virtual void DoEnable( bool enable );
+
+    virtual void SetWindowStyleFlag( long style );

 
     virtual bool IsRetained() const;
 
 
     virtual bool IsRetained() const;
 


@@ -64,18 +69,19 @@ public:
     virtual bool Reparent( wxWindowBase *newParent );
 
     virtual void WarpPointer(int x, int y);
     virtual bool Reparent( wxWindowBase *newParent );
 
     virtual void WarpPointer(int x, int y);

-    virtual void CaptureMouse();
-    virtual void ReleaseMouse();

 
 

-    virtual void Refresh( bool eraseBackground = TRUE,
+    virtual void Refresh( bool eraseBackground = true,

                           const wxRect *rect = (const wxRect *) NULL );
                           const wxRect *rect = (const wxRect *) NULL );

-    virtual void Clear();
+    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 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,
     virtual int GetCharHeight() const;
     virtual int GetCharWidth() const;
     virtual void GetTextExtent(const wxString& string,


@@ -90,8 +96,8 @@ public:
 #endif // wxUSE_MENUS_NATIVE
 
     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
 #endif // wxUSE_MENUS_NATIVE
 
     virtual void SetScrollbar( int orient, int pos, int thumbVisible,

-                               int range, bool refresh = TRUE );
-    virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE );
+                               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 int GetScrollPos( int orient ) const;
     virtual int GetScrollThumb( int orient ) const;
     virtual int GetScrollRange( int orient ) const;


@@ -102,110 +108,115 @@ public:
     virtual void SetDropTarget( wxDropTarget *dropTarget );
 #endif // wxUSE_DRAG_AND_DROP
 
     virtual void SetDropTarget( wxDropTarget *dropTarget );
 #endif // wxUSE_DRAG_AND_DROP
 

+    virtual bool IsDoubleBuffered() const { return false; }
+

     // implementation
     // --------------
 
     virtual WXWidget GetHandle() const { return m_widget; }
 
     // implementation
     // --------------
 
     virtual WXWidget GetHandle() const { return m_widget; }
 

-    /* I don't want users to override what's done in idle so everything that
-       has to be done in idle time in order for wxGTK to work is done in
-       OnInternalIdle */
+    // I don't want users to override what's done in idle so everything that
+    // has to be done in idle time in order for wxGTK to work is done in
+    // OnInternalIdle

     virtual void OnInternalIdle();
 
     virtual void OnInternalIdle();
 

-    /* For compatibility across platforms (not in event table) */
-    void OnIdle(wxIdleEvent& WXUNUSED(event)) {};
+    // Internal represention of Update()
+    void GtkUpdate();

 
 

-    // wxGTK-specific: called recursively by Enable,
-    // to give widgets an oppprtunity to correct their colours after they
-    // have been changed by Enable
-    virtual void OnParentEnable( bool WXUNUSED(enable) ) {};
+    // For compatibility across platforms (not in event table)
+    void OnIdle(wxIdleEvent& WXUNUSED(event)) {}

 
 

-    /* used by all window classes in the widget creation process */
+    // Used by all window classes in the widget creation process.

     bool PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size );
     void PostCreation();
 
     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 */
+    // 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);
 
     void DoAddChild(wxWindowGTK *child);
 

-    /* 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 nor clear, which native widget is the top
-       widget where (most of) the input goes. even tooltips have
-       to be applied to all subwidgets. */
-
+    // 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();
     virtual bool IsOwnGtkWindow( GdkWindow *window );
     void ConnectWidget( GtkWidget *widget );
 
     virtual GtkWidget* GetConnectWidget();
     virtual bool IsOwnGtkWindow( GdkWindow *window );
     void ConnectWidget( GtkWidget *widget );
 

-    /* creates a new widget style if none is there
-       and sets m_widgetStyle to this value. */
-    GtkStyle *GetWidgetStyle();
-
-    /* called by SetFont() and SetXXXColour etc */
-    void SetWidgetStyle();
-
-    /* overridden in many GTK widgets */
-    virtual void ApplyWidgetStyle();
-

 #if wxUSE_TOOLTIPS
     virtual void ApplyToolTip( GtkTooltips *tips, const wxChar *tip );
 #endif // wxUSE_TOOLTIPS
 
 #if wxUSE_TOOLTIPS
     virtual void ApplyToolTip( GtkTooltips *tips, const wxChar *tip );
 #endif // wxUSE_TOOLTIPS
 

-    // called from GTK signales handlers. it indicates that
+    // Call after modifing the value of m_hAdjust or m_vAdjust to bring the
+    // scrolbar in sync (this does not generate any wx events)
+    void GtkUpdateScrollbar(int orient);
+
+    // 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() ).
     // the layouting functions have to be called later on
     // (i.e. in idle time, implemented in OnInternalIdle() ).

-    void GtkUpdateSize() { m_sizeSet = FALSE; }
+    void GtkUpdateSize() { m_sizeSet = false; }
+
+    // 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; }

 
     // position and size of the window
     int                  m_x, m_y;
     int                  m_width, m_height;
     int                  m_oldClientWidth,m_oldClientHeight;
 
 
     // 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;
-    GtkWidget           *m_wxwindow;
+    // 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;

 
 

-#if HAVE_XIM
-    /* XIM support for wxWindows */
+#ifdef HAVE_XIM
+    // XIM support for wxWidgets

     GdkIC               *m_ic;
     GdkICAttr           *m_icattr;
     GdkIC               *m_ic;
     GdkICAttr           *m_icattr;

-#endif
+#endif // HAVE_XIM

 
 

-    /* scrolling stuff */
+    // The area to be cleared (and not just refreshed)
+    // We cannot make this distinction under GTK 2.0.
+    wxRegion             m_clearRegion;
+
+    // scrolling stuff

     GtkAdjustment       *m_hAdjust,*m_vAdjust;
     float                m_oldHorizontalPos;
     float                m_oldVerticalPos;
 
     // extra (wxGTK-specific) flags
     GtkAdjustment       *m_hAdjust,*m_vAdjust;
     float                m_oldHorizontalPos;
     float                m_oldVerticalPos;
 
     // 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_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_hasScrolling:1;
     bool                 m_hasVMT:1;
     bool                 m_sizeSet:1;
     bool                 m_resizing:1;

-    bool                 m_isStaticBox:1;    /* faster than IS_KIND_OF */
-    bool                 m_isRadioButton:1;  /* faster than IS_KIND_OF */
-    bool                 m_isFrame:1;        /* faster than IS_KIND_OF */
-    bool                 m_acceptsFocus:1;   /* not wxStaticBox, not wxStaticBitmap etc.  */
-    bool                 m_isScrolling;
-    bool                 m_clipPaintRegion;  /* TRUE after ScrollWindow() */
-    bool                 m_queuedFullRedraw; /* TRUE after DoMoveWindow */
-
-    // these are true if the style were set before the widget was realized
-    // (typcally in the constructor) but the actual GTK style must not be set
-    // before the widget has been "realized"
-    bool                 m_delayedForegroundColour:1;
-    bool                 m_delayedBackgroundColour:1;
-
-    // contains GTK's widgets internal information about non-default widget
-    // font and colours. we create one for each widget that gets any
-    // non-default attribute set via SetFont() or SetForegroundColour() /
-    // SetBackgroundColour().
-    GtkStyle            *m_widgetStyle;
+    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_needsStyleChange:1;  // May not be able to change
+                                                // background style until OnIdle

 
     // C++ has no virtual methods in the constrcutor of any class but we need
     // different methods of inserting a child window into a wxFrame,
 
     // C++ has no virtual methods in the constrcutor of any class but we need
     // different methods of inserting a child window into a wxFrame,


@@ -224,18 +235,36 @@ public:
     virtual void DoSetClientSize(int width, int height);
     virtual void DoMoveWindow(int x, int y, int width, int height);
 
     virtual void DoSetClientSize(int width, int height);
     virtual void DoMoveWindow(int x, int y, int width, int height);
 

+    virtual void DoCaptureMouse();
+    virtual void DoReleaseMouse();
+

 #if wxUSE_TOOLTIPS
     virtual void DoSetToolTip( wxToolTip *tip );
 #endif // wxUSE_TOOLTIPS
 
 #if wxUSE_TOOLTIPS
     virtual void DoSetToolTip( wxToolTip *tip );
 #endif // wxUSE_TOOLTIPS
 

-    // common part of all ctors (can't be virtual because called from ctor)
+protected:
+    // common part of all ctors (not virtual because called from ctor)

     void Init();
 
     void Init();
 

+    // 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);
+

 private:
     DECLARE_DYNAMIC_CLASS(wxWindowGTK)
     DECLARE_NO_COPY_CLASS(wxWindowGTK)
 };
 
 private:
     DECLARE_DYNAMIC_CLASS(wxWindowGTK)
     DECLARE_NO_COPY_CLASS(wxWindowGTK)
 };
 

-extern wxWindow *wxFindFocusedChild(wxWindowGTK *win);
+extern WXDLLIMPEXP_CORE wxWindow *wxFindFocusedChild(wxWindowGTK *win);

 
 #endif // __GTKWINDOWH__
 
 #endif // __GTKWINDOWH__