window.h

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

    //
    // 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()
    wxRegion             m_nativeUpdateRegion;  // not transformed for RTL
    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_