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