include/wx/gtk/window.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/window.h
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifndef __GTKWINDOWH__
  12 #define __GTKWINDOWH__
  13
  14 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  15     #pragma interface
  16 #endif
  17
  18 // helper structure that holds class that holds GtkIMContext object and
  19 // some additional data needed for key events processing
  20 struct wxGtkIMData;
  21
  22 //-----------------------------------------------------------------------------
  23 // callback definition for inserting a window (internal)
  24 //-----------------------------------------------------------------------------
  25
  26 class WXDLLIMPEXP_CORE wxWindowGTK;
  27 typedef void (*wxInsertChildFunction)( wxWindowGTK*, wxWindowGTK* );
  28
  29 //-----------------------------------------------------------------------------
  30 // wxWindowGTK
  31 //-----------------------------------------------------------------------------
  32
  33 class WXDLLIMPEXP_CORE wxWindowGTK : public wxWindowBase
  34 {
  35 public:
  36     // creating the window
  37     // -------------------
  38     wxWindowGTK();
  39     wxWindowGTK(wxWindow *parent,
  40                 wxWindowID id,
  41                 const wxPoint& pos = wxDefaultPosition,
  42                 const wxSize& size = wxDefaultSize,
  43                 long style = 0,
  44                 const wxString& name = wxPanelNameStr);
  45     bool Create(wxWindow *parent,
  46                 wxWindowID id,
  47                 const wxPoint& pos = wxDefaultPosition,
  48                 const wxSize& size = wxDefaultSize,
  49                 long style = 0,
  50                 const wxString& name = wxPanelNameStr);
  51     virtual ~wxWindowGTK();
  52
  53     // implement base class (pure) virtual methods
  54     // -------------------------------------------
  55
  56     virtual bool Destroy();
  57
  58     virtual void Raise();
  59     virtual void Lower();
  60
  61     virtual bool Show( bool show = TRUE );
  62     virtual bool Enable( bool enable = TRUE );
  63
  64     virtual bool IsRetained() const;
  65
  66     virtual void SetFocus();
  67     virtual bool AcceptsFocus() const;
  68
  69     virtual bool Reparent( wxWindowBase *newParent );
  70
  71     virtual void WarpPointer(int x, int y);
  72
  73     virtual void Refresh( bool eraseBackground = TRUE,
  74                           const wxRect *rect = (const wxRect *) NULL );
  75     virtual void Update();
  76     virtual void ClearBackground();
  77
  78     virtual bool SetBackgroundColour( const wxColour &colour );
  79     virtual bool SetForegroundColour( const wxColour &colour );
  80     virtual bool SetCursor( const wxCursor &cursor );
  81     virtual bool SetFont( const wxFont &font );
  82
  83     virtual bool SetBackgroundStyle(wxBackgroundStyle style) ;
  84
  85     virtual int GetCharHeight() const;
  86     virtual int GetCharWidth() const;
  87     virtual void GetTextExtent(const wxString& string,
  88                                int *x, int *y,
  89                                int *descent = (int *) NULL,
  90                                int *externalLeading = (int *) NULL,
  91                                const wxFont *theFont = (const wxFont *) NULL)
  92                                const;
  93
  94 #if wxUSE_MENUS_NATIVE
  95     virtual bool DoPopupMenu( wxMenu *menu, int x, int y );
  96 #endif // wxUSE_MENUS_NATIVE
  97
  98     virtual void SetScrollbar( int orient, int pos, int thumbVisible,
  99                                int range, bool refresh = TRUE );
 100     virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE );
 101     virtual int GetScrollPos( int orient ) const;
 102     virtual int GetScrollThumb( int orient ) const;
 103     virtual int GetScrollRange( int orient ) const;
 104     virtual void ScrollWindow( int dx, int dy,
 105                                const wxRect* rect = (wxRect *) NULL );
 106
 107 #if wxUSE_DRAG_AND_DROP
 108     virtual void SetDropTarget( wxDropTarget *dropTarget );
 109 #endif // wxUSE_DRAG_AND_DROP
 110
 111 #ifdef __WXGTK20__
 112     virtual void AddChild( wxWindowBase *child );
 113     virtual void RemoveChild( wxWindowBase *child );
 114 #endif
 115
 116     // implementation
 117     // --------------
 118
 119     virtual WXWidget GetHandle() const { return m_widget; }
 120
 121     // I don't want users to override what's done in idle so everything that
 122     // has to be done in idle time in order for wxGTK to work is done in
 123     // OnInternalIdle
 124     virtual void OnInternalIdle();
 125
 126     // Internal represention of Update()
 127     void GtkUpdate();
 128
 129     // For compatibility across platforms (not in event table)
 130     void OnIdle(wxIdleEvent& WXUNUSED(event)) {}
 131
 132     // wxGTK-specific: called recursively by Enable,
 133     // to give widgets an oppprtunity to correct their colours after they
 134     // have been changed by Enable
 135     virtual void OnParentEnable( bool WXUNUSED(enable) ) {}
 136
 137     // Used by all window classes in the widget creation process.
 138     bool PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size );
 139     void PostCreation();
 140
 141     // Internal addition of child windows. differs from class
 142     // to class not by using virtual functions but by using
 143     // the m_insertCallback.
 144     void DoAddChild(wxWindowGTK *child);
 145
 146     // This methods sends wxPaintEvents to the window. It reads the
 147     // update region, breaks it up into rects and sends an event
 148     // for each rect. It is also responsible for background erase
 149     // events and NC paint events. It is called from "draw" and
 150     // "expose" handlers as well as from ::Update()
 151     void GtkSendPaintEvents();
 152
 153     // The methods below are required because many native widgets
 154     // are composed of several subwidgets and setting a style for
 155     // the widget means setting it for all subwidgets as well.
 156     // also, it is nor clear, which native widget is the top
 157     // widget where (most of) the input goes. even tooltips have
 158     // to be applied to all subwidgets.
 159     virtual GtkWidget* GetConnectWidget();
 160     virtual bool IsOwnGtkWindow( GdkWindow *window );
 161     void ConnectWidget( GtkWidget *widget );
 162
 163 #ifdef __WXGTK20__
 164     // Returns the default context which usually is anti-aliased
 165     PangoContext   *GtkGetPangoDefaultContext();
 166
 167     // Returns the X11 context which renders on the X11 client
 168     // side (which can be remote) and which usually is not
 169     // anti-aliased and is thus faster
 170     PangoContext   *GtkGetPangoX11Context();
 171     PangoContext   *m_x11Context;
 172 #endif
 173
 174 #if wxUSE_TOOLTIPS
 175     virtual void ApplyToolTip( GtkTooltips *tips, const wxChar *tip );
 176 #endif // wxUSE_TOOLTIPS
 177
 178     // Called from GTK signales handlers. it indicates that
 179     // the layouting functions have to be called later on
 180     // (i.e. in idle time, implemented in OnInternalIdle() ).
 181     void GtkUpdateSize() { m_sizeSet = FALSE; }
 182
 183     // fix up the mouse event coords, used by wxListBox only so far
 184     virtual void FixUpMouseEvent(GtkWidget * WXUNUSED(widget),
 185                                  wxCoord& WXUNUSED(x),
 186                                  wxCoord& WXUNUSED(y)) { }
 187
 188     // is this window transparent for the mouse events (as wxStaticBox is)?
 189     virtual bool IsTransparentForMouse() const { return FALSE; }
 190
 191     // is this a radiobutton (used by radiobutton code itself only)?
 192     virtual bool IsRadioButton() const { return FALSE; }
 193
 194     // position and size of the window
 195     int                  m_x, m_y;
 196     int                  m_width, m_height;
 197     int                  m_oldClientWidth,m_oldClientHeight;
 198
 199     // see the docs in src/gtk/window.cpp
 200     GtkWidget           *m_widget;          // mostly the widget seen by the rest of GTK
 201     GtkWidget           *m_wxwindow;        // mostly the client area as per wxWidgets
 202
 203     // this widget will be queried for GTK's focus events
 204     GtkWidget           *m_focusWidget;
 205
 206 #ifdef __WXGTK20__
 207     wxGtkIMData         *m_imData;
 208 #else
 209 #if HAVE_XIM && !defined(__WXGTK20__)
 210     // XIM support for wxWidgets
 211     GdkIC               *m_ic;
 212     GdkICAttr           *m_icattr;
 213 #endif
 214 #endif
 215
 216 #ifndef __WXGTK20__
 217     // The area to be cleared (and not just refreshed)
 218     // We cannot make this distinction under GTK 2.0.
 219     wxRegion             m_clearRegion;
 220 #endif
 221
 222     // scrolling stuff
 223     GtkAdjustment       *m_hAdjust,*m_vAdjust;
 224     float                m_oldHorizontalPos;
 225     float                m_oldVerticalPos;
 226
 227     // extra (wxGTK-specific) flags
 228     bool                 m_needParent:1;        // ! wxFrame, wxDialog, wxNotebookPage ?
 229     bool                 m_noExpose:1;          // wxGLCanvas has its own redrawing
 230     bool                 m_nativeSizeEvent:1;   // wxGLCanvas sends wxSizeEvent upon "alloc_size"
 231     bool                 m_hasScrolling:1;
 232     bool                 m_hasVMT:1;
 233     bool                 m_sizeSet:1;
 234     bool                 m_resizing:1;
 235     bool                 m_acceptsFocus:1;      // true if not static
 236     bool                 m_hasFocus:1;          // true if == FindFocus()
 237     bool                 m_isScrolling:1;       // dragging scrollbar thumb?
 238     bool                 m_clipPaintRegion:1;   // TRUE after ScrollWindow()
 239 #ifdef __WXGTK20__
 240     bool                 m_dirtyTabOrder:1;     // tab order changed, GTK focus
 241                                                 // chain needs update
 242 #endif
 243     bool                 m_needsStyleChange:1;  // May not be able to change
 244                                                 // background style until OnIdle
 245
 246     // C++ has no virtual methods in the constrcutor of any class but we need
 247     // different methods of inserting a child window into a wxFrame,
 248     // wxMDIFrame, wxNotebook etc. this is the callback that will get used.
 249     wxInsertChildFunction  m_insertCallback;
 250
 251     // implement the base class pure virtuals
 252     virtual void DoClientToScreen( int *x, int *y ) const;
 253     virtual void DoScreenToClient( int *x, int *y ) const;
 254     virtual void DoGetPosition( int *x, int *y ) const;
 255     virtual void DoGetSize( int *width, int *height ) const;
 256     virtual void DoGetClientSize( int *width, int *height ) const;
 257     virtual void DoSetSize(int x, int y,
 258                            int width, int height,
 259                            int sizeFlags = wxSIZE_AUTO);
 260     virtual void DoSetClientSize(int width, int height);
 261     virtual void DoMoveWindow(int x, int y, int width, int height);
 262
 263     virtual void DoCaptureMouse();
 264     virtual void DoReleaseMouse();
 265
 266 #if wxUSE_TOOLTIPS
 267     virtual void DoSetToolTip( wxToolTip *tip );
 268 #endif // wxUSE_TOOLTIPS
 269
 270 protected:
 271     // common part of all ctors (not virtual because called from ctor)
 272     void Init();
 273
 274 #ifdef __WXGTK20__
 275     virtual void DoMoveInTabOrder(wxWindow *win, MoveKind move);
 276
 277     // Copies m_children tab order to GTK focus chain:
 278     void RealizeTabOrder();
 279 #endif
 280
 281     // Called by ApplyWidgetStyle (which is called by SetFont() and
 282     // SetXXXColour etc to apply style changed to native widgets) to create
 283     // modified GTK style with non-standard attributes. If forceStyle=true,
 284     // creates empty GtkRcStyle if there are no modifications, otherwise
 285     // returns NULL in such case.
 286     GtkRcStyle *CreateWidgetStyle(bool forceStyle = false);
 287
 288     // Overridden in many GTK widgets who have to handle subwidgets
 289     virtual void ApplyWidgetStyle(bool forceStyle = false);
 290
 291     // helper function to ease native widgets wrapping, called by
 292     // ApplyWidgetStyle -- override this, not ApplyWidgetStyle
 293     virtual void DoApplyWidgetStyle(GtkRcStyle *style);
 294
 295 private:
 296     DECLARE_DYNAMIC_CLASS(wxWindowGTK)
 297     DECLARE_NO_COPY_CLASS(wxWindowGTK)
 298 };
 299
 300 extern WXDLLIMPEXP_CORE wxWindow *wxFindFocusedChild(wxWindowGTK *win);
 301
 302 #endif // __GTKWINDOWH__