menus.cpp

uclinux 下的vlc播放器源代码

    p_parent->PopupMenu( &popupmenu, pos.x, pos.y );
    p_intf->p_sys->p_popup_menu = NULL;
    vlc_object_release( p_playlist );
}

void PopupMenu( intf_thread_t *p_intf, wxWindow *p_parent,
                const wxPoint& pos )
{
    int minimal = config_GetInt( p_intf, "wx-minimal" );
    POPUP_BOILERPLATE;
    if( p_input )
    {
        vlc_object_yield( p_input );
        InputAutoMenuBuilder( VLC_OBJECT(p_input), ai_objects, as_varnames );

        /* Video menu */
        PUSH_SEPARATOR;
        as_varnames.Add( "video-es" );
        ai_objects.Add( p_input->i_object_id );
        as_varnames.Add( "spu-es" );
        ai_objects.Add( p_input->i_object_id );
        vlc_object_t *p_vout = (vlc_object_t *)vlc_object_find( p_input,
                                                VLC_OBJECT_VOUT, FIND_CHILD );
        if( p_vout )
        {
            VideoAutoMenuBuilder( p_vout, ai_objects, as_varnames );
            vlc_object_release( p_vout );
        }
        /* Audio menu */
        PUSH_SEPARATOR
        as_varnames.Add( "audio-es" );
        ai_objects.Add( p_input->i_object_id );
        vlc_object_t *p_aout = (vlc_object_t *)vlc_object_find( p_input,
                                             VLC_OBJECT_AOUT, FIND_ANYWHERE );
        if( p_aout )
        {
            AudioAutoMenuBuilder( p_aout, ai_objects, as_varnames );
            vlc_object_release( p_aout );
        }
    }

    /* Interface menu */
    PUSH_SEPARATOR
    IntfAutoMenuBuilder( p_intf, ai_objects, as_varnames, true );

    /* Build menu */
    Menu popupmenu( p_intf, PopupMenu_Events );
    popupmenu.Populate( as_varnames, ai_objects );
    POPUP_STATIC_ENTRIES;

    if (!minimal)
    {
        popupmenu.Append( MenuDummy_Event, wxU(_("Open")),
                          OpenStreamMenu( p_intf ), wxT("") );
    }
    p_intf->p_sys->p_popup_menu = &popupmenu;
    p_parent->PopupMenu( &popupmenu, pos.x, pos.y );
    p_intf->p_sys->p_popup_menu = NULL;
    vlc_object_release( p_playlist );
}

/*****************************************************************************
 * Auto menus
 *****************************************************************************/
wxMenu *AudioMenu( intf_thread_t *_p_intf, wxWindow *p_parent, wxMenu *p_menu )
{
    vlc_object_t *p_object;
    ArrayOfInts ai_objects;
    ArrayOfStrings as_varnames;

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INPUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        PUSH_VAR( "audio-es" );
        vlc_object_release( p_object );
    }

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_AOUT,
                                                FIND_ANYWHERE );
    if( p_object )
    {
        AudioAutoMenuBuilder( p_object, ai_objects, as_varnames );
        vlc_object_release( p_object );
    }

    /* Build menu */
    Menu *p_vlc_menu = (Menu *)p_menu;
    if( !p_vlc_menu )
        p_vlc_menu = new Menu( _p_intf, AudioMenu_Events );
    else
        p_vlc_menu->Clear();

    p_vlc_menu->Populate(  as_varnames, ai_objects );

    return p_vlc_menu;
}

wxMenu *VideoMenu( intf_thread_t *_p_intf, wxWindow *p_parent, wxMenu *p_menu )
{
    vlc_object_t *p_object;
    ArrayOfInts ai_objects;
    ArrayOfStrings as_varnames;

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INPUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        PUSH_VAR( "video-es" );
        PUSH_VAR( "spu-es" );
        vlc_object_release( p_object );
    }

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_VOUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        VideoAutoMenuBuilder( p_object, ai_objects, as_varnames );
        vlc_object_release( p_object );
    }

    /* Build menu */
    Menu *p_vlc_menu = (Menu *)p_menu;
    if( !p_vlc_menu )
        p_vlc_menu = new Menu( _p_intf, VideoMenu_Events );
    else
        p_vlc_menu->Clear();

    p_vlc_menu->Populate(  as_varnames, ai_objects );
    return p_vlc_menu;
}

wxMenu *NavigMenu( intf_thread_t *_p_intf, wxWindow *p_parent, wxMenu *p_menu )
{
    vlc_object_t *p_object;
    ArrayOfInts ai_objects;
    ArrayOfStrings as_varnames;

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INPUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        InputAutoMenuBuilder( p_object, ai_objects, as_varnames );
        PUSH_VAR( "prev-title"); PUSH_VAR ( "next-title" );
        PUSH_VAR( "prev-chapter"); PUSH_VAR( "next-chapter" );
        vlc_object_release( p_object );
    }

    /* Build menu */
    Menu *p_vlc_menu = (Menu *)p_menu;
    if( !p_vlc_menu )
        p_vlc_menu = new Menu( _p_intf, NavigMenu_Events );
    else
        p_vlc_menu->Clear();

    p_vlc_menu->Populate( as_varnames, ai_objects );

    return p_vlc_menu;
}

wxMenu *SettingsMenu( intf_thread_t *_p_intf, wxWindow *p_parent,
                      wxMenu *p_menu )
{
    vlc_object_t *p_object;
    ArrayOfInts ai_objects;
    ArrayOfStrings as_varnames;

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INTF,
                                                FIND_PARENT );
    if( p_object != NULL )
    {
        PUSH_VAR( "intf-switch" );
        PUSH_VAR( "intf-add" );
        vlc_object_release( p_object );
    }

    /* Build menu */
    Menu *p_vlc_menu = (Menu *)p_menu;
    if( !p_vlc_menu )
        p_vlc_menu = new Menu( _p_intf, SettingsMenu_Events );
    else
        p_vlc_menu->Clear();

    p_vlc_menu->Populate( as_varnames, ai_objects );

    return p_vlc_menu;
}

/*****************************************************************************
 * Constructor.
 *****************************************************************************/
Menu::Menu( intf_thread_t *_p_intf, int _i_start_id ) : wxMenu( )
{
    /* Initializations */
    p_intf = _p_intf;
    i_start_id = _i_start_id;
}

Menu::~Menu()
{
}

/*****************************************************************************
 * Public methods.
 *****************************************************************************/
void Menu::Populate( ArrayOfStrings & ras_varnames,
                     ArrayOfInts & rai_objects )
{
    vlc_object_t *p_object;
    vlc_bool_t b_section_empty = VLC_FALSE;
    int i;

    i_item_id = i_start_id;

    for( i = 0; i < (int)rai_objects.GetCount() ; i++ )
    {
        if( !ras_varnames[i] || !*ras_varnames[i] )
        {
            if( b_section_empty )
            {
                Append( MenuDummy_Event + i, wxU(_("Empty")) );
                Enable( MenuDummy_Event + i, FALSE );
            }
            AppendSeparator();
            b_section_empty = VLC_TRUE;
            continue;
        }

        if( rai_objects[i] == 0  )
        {
            Append( MenuDummy_Event, wxU(ras_varnames[i]) );
            b_section_empty = VLC_FALSE;
            continue;
        }

        p_object = (vlc_object_t *)vlc_object_get( p_intf,
                                                   rai_objects[i] );
        if( p_object == NULL ) continue;

        b_section_empty = VLC_FALSE;
        CreateMenuItem( this, ras_varnames[i], p_object );
        vlc_object_release( p_object );
    }

    /* Special case for empty menus */
    if( GetMenuItemCount() == 0 || b_section_empty )
    {
        Append( MenuDummy_Event + i, wxU(_("Empty")) );
        Enable( MenuDummy_Event + i, FALSE );
    }
}

/* Work-around helper for buggy wxGTK */
static void RecursiveDestroy( wxMenu *menu )
{
    wxMenuItemList::Node *node = menu->GetMenuItems().GetFirst();
    for( ; node; )
    {
        wxMenuItem *item = node->GetData();
        node = node->GetNext();

        /* Delete the submenus */
        wxMenu *submenu = item->GetSubMenu();
        if( submenu )
        {
            RecursiveDestroy( submenu );
        }
        menu->Delete( item );
    }
}

void Menu::Clear( )
{
    RecursiveDestroy( this );
}

/*****************************************************************************
 * Private methods.
 *****************************************************************************/
static bool IsMenuEmpty( const char *psz_var, vlc_object_t *p_object,
                         bool b_root = TRUE )
{
    vlc_value_t val, val_list;
    int i_type, i_result, i;

    /* Check the type of the object variable */
    i_type = var_Type( p_object, psz_var );

    /* Check if we want to display the variable */
    if( !(i_type & VLC_VAR_HASCHOICE) ) return FALSE;

    var_Change( p_object, psz_var, VLC_VAR_CHOICESCOUNT, &val, NULL );
    if( val.i_int == 0 ) return TRUE;

    if( (i_type & VLC_VAR_TYPE) != VLC_VAR_VARIABLE )
    {
        /* Very evil hack ! intf-switch can have only one value */
        if( !strcmp( psz_var, "intf-switch" ) ) return FALSE;
        if( val.i_int == 1 && b_root ) return TRUE;
        else return FALSE;
    }

    /* Check children variables in case of VLC_VAR_VARIABLE */
    if( var_Change( p_object, psz_var, VLC_VAR_GETLIST, &val_list, NULL ) < 0 )
    {
        return TRUE;
    }

    for( i = 0, i_result = TRUE; i < val_list.p_list->i_count; i++ )
    {
        if( !IsMenuEmpty( val_list.p_list->p_values[i].psz_string,
                          p_object, FALSE ) )
        {
            i_result = FALSE;
            break;
        }
    }

    /* clean up everything */
    var_Change( p_object, psz_var, VLC_VAR_FREELIST, &val_list, NULL );

    return i_result;
}

void Menu::CreateMenuItem( wxMenu *menu, const char *psz_var,
                           vlc_object_t *p_object )
{
    wxMenuItemExt *menuitem;
    vlc_value_t val, text;
    int i_type;

    /* Check the type of the object variable */
    i_type = var_Type( p_object, psz_var );

    switch( i_type & VLC_VAR_TYPE )
    {
    case VLC_VAR_VOID:
    case VLC_VAR_BOOL:
    case VLC_VAR_VARIABLE:
    case VLC_VAR_STRING:
    case VLC_VAR_INTEGER:
    case VLC_VAR_FLOAT:
        break;
    default:
        /* Variable doesn't exist or isn't handled */
        return;
    }

    /* Make sure we want to display the variable */
    if( IsMenuEmpty( psz_var, p_object ) )  return;

    /* Get the descriptive name of the variable */
    var_Change( p_object, psz_var, VLC_VAR_GETTEXT, &text, NULL );