File indexing completed on 2024-05-12 17:05:47

 #ifndef oxygencomboboxdata_h
 #define oxygencomboboxdata_h
 /*
 * this file is part of the oxygen gtk engine
 * SPDX-FileCopyrightText: 2010 Hugo Pereira Da Costa <hugo.pereira@free.fr>
 *
 * SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "oxygensignal.h"
 
 #include <gtk/gtk.h>
 #include <algorithm>
 #include <map>
 #include <iostream>
 
 namespace Oxygen
 {
 
     // handles focus and hover and pressed down state for comboboxes
     class ComboBoxData
     {
 
         public:
 
         //! constructor
         ComboBoxData( void ):
             _target( 0L ),
             _list( 0L )
         {}
 
         //! destructor
         virtual ~ComboBoxData( void )
         { disconnect( _target ); }
 
         //! setup connections
         /*! does nothing. Only kept here for consistency with other data */
         void connect( GtkWidget* );
 
         //! disconnect
         void disconnect( GtkWidget* );
 
         //!@name modifiers
         //@{
 
         //! list
         void setList( GtkWidget* widget )
         { _list = widget; }
 
         //! assign button
         void setButton( GtkWidget* value );
 
         //! button focus
         void setButtonFocus( bool value )
         {
             if( _button._focus == value ) return;
             _button._focus = value;
 
             // trigger update
             if( _target ) gtk_widget_queue_draw( _target );
 
             return;
         }
 
         //! register child
         void registerChild( GtkWidget*, bool recursive = true );
 
         //@}
 
         //!@name accessors
         //@{
 
         //! list
         GtkWidget* list( void ) const
         { return _list; }
 
         //! pressed
         bool pressed( void ) const
         { return _button._pressed; }
 
         //! true if either button or entry has focus
         bool hasFocus( void ) const
         { return _button._focus; }
 
         //! true if either button or entry has hover
         bool hovered( void ) const
         { return std::find_if( _hoverData.begin(), _hoverData.end(), HoveredFTor() ) != _hoverData.end(); }
 
         //@}
 
         protected:
 
         //! initialize cell view
         void initializeCellView( GtkWidget* value );
 
         //! update cell view color
         void updateCellViewColor( void ) const;
 
         //! update button event window
         /*!
         the trick is to extend the button event window by 6 pixels to the left,
         in order to fill a dead area created by the Combobox's GtkFrame's margin.
         */
         void updateButtonEventWindow( void ) const;
 
         //! set hover flag for given widget
         void setPressed( GtkWidget*, bool );
 
         //! set hover flag for given widget
         void setHovered( GtkWidget*, bool );
 
         //! disconnect child
         void unregisterChild( GtkWidget* );
 
         //!@name callbacks
         //@{
 
         static gboolean childDestroyNotifyEvent( GtkWidget*, gpointer );
         static void childToggledEvent( GtkWidget*, gpointer );
         static void childSizeAllocateEvent( GtkWidget*, GtkAllocation*, gpointer );
 
         static gboolean enterNotifyEvent( GtkWidget*, GdkEventCrossing*, gpointer );
         static gboolean leaveNotifyEvent( GtkWidget*, GdkEventCrossing*, gpointer );
         static void stateChangeEvent( GtkWidget*, GtkStateType, gpointer );
         static void styleSetEvent( GtkWidget*, GtkStyle*, gpointer );
 
         //@}
 
         private:
 
         //! target widget
         GtkWidget* _target;
 
         //! drop-down list, if set
         GtkWidget* _list;
 
         //!@name signals
         //@{
 
         //! state change signal
         Signal _stateChangeId;
 
         //! style set
         Signal _styleSetId;
 
         //@}
 
         // handle child registration
         class ChildData
         {
 
             public:
 
             //! constructor
             explicit ChildData( void ):
                 _widget(0L)
             {}
 
             //! destructor
             virtual ~ChildData( void )
             {}
 
             //! disconnect
             virtual void disconnect( void );
 
             //! widget
             GtkWidget* _widget;
 
             //!callback id
             Signal _destroyId;
 
         };
 
         // handle focus and toggle state
         class ButtonData: public ChildData
         {
 
             public:
 
             //! constructor
             explicit ButtonData( void ):
                 _pressed( false ),
                 _focus( false )
             {}
 
             //! destructor
             virtual ~ButtonData( void )
             {}
 
             //! disconnect
             virtual void disconnect( void );
 
             //! true if widget is down
             bool _pressed;
 
             //! true if widget has focus
             bool _focus;
 
             //! toggled callback Id
             Signal _toggledId;
             Signal _sizeAllocateId;
 
         };
 
         class HoverData: public ChildData
         {
             public:
 
             //! constructor
             explicit HoverData( void ):
                 _hovered( false )
             {}
 
             //! destructor
             virtual ~HoverData( void )
             {}
 
             //! disconnect
             virtual void disconnect( void );
 
             //! true if widget is hovered
             bool _hovered;
 
             //!@name callback ids
             //@{
             Signal _enterId;
             Signal _leaveId;
             //@}
 
         };
 
         //! need to detect hovered child
         class HoveredFTor
         {
             public:
 
             bool operator () ( const std::pair<GtkWidget*, HoverData>& dataPair )
             { return dataPair.second._hovered; }
 
         };
 
         typedef std::map<GtkWidget*, HoverData> HoverDataMap;
         HoverDataMap _hoverData;
 
         //! true if cell layout has been initialized
         bool _cellLayoutInitialized;
 
         //! cell data
         ChildData _cell;
 
         //! button data
         ButtonData _button;
 
     };
 
 }
 
 #endif