Improve ensureVisible

modules/gui/skins2/controls/ctrl_tree.cpp

@@ -147,8 +147,11 @@ void CtrlTree::onUpdate( Subject<VarTree, tree_update*> &rTree,
         /* TODO: Check if the item should be visible. If it is, makeImage
          * Else, do nothing
          */
+        if( arg->b_visible == true )
+        {
             makeImage();
         }
+    }
     notifyLayout();
     m_pLastSelected = NULL;
 }
@@ -232,7 +235,7 @@ void CtrlTree::handleEvent( EvtGeneric &rEvent )
                         m_pLastSelected = &*it;
                     }
                 }
-                //ensureVisible( it );
+                ensureVisible( it );
             }
             else if( key == KEY_DOWN )
             {
@@ -252,7 +255,7 @@ void CtrlTree::handleEvent( EvtGeneric &rEvent )
                 {
                     previousWasSelected = ( &*it == m_pLastSelected );
                 }
-                //ensureVisible( it );
+                ensureVisible( it );
             }
             else if( key == KEY_RIGHT )
             {
@@ -466,10 +469,13 @@ bool CtrlTree::ensureVisible( VarTree::Iterator item )
     // Find the item to focus
     int focusItemIndex = 0;
     VarTree::Iterator it;
+
+    m_rTree.ensureExpanded( item );
+
     for( it = m_rTree.begin(); it != m_rTree.end();
          it = m_rTree.getNextVisibleItem( it ) )
     {
-        if( it->m_playing ) break;
+        if( it == item ) break;
         focusItemIndex++;
     }
    return ensureVisible( focusItemIndex );
@@ -494,7 +500,7 @@ bool CtrlTree::ensureVisible( int focusItemIndex )
         && ( focusItemIndex < firstPosIndex
            || focusItemIndex > firstPosIndex + maxItems() ) )
     {
-        // Scroll to have the playing stream visible
+        // Scroll to have the wanted stream visible
         VarPercent &rVarPos = m_rTree.getPositionVar();
         rVarPos.set( 1.0 - (double)focusItemIndex /
                            (double)m_rTree.visibleItems() );
@@ -508,15 +514,27 @@ void CtrlTree::autoScroll()
     // Find the current playing stream
     int playIndex = 0;
     VarTree::Iterator it;
+
+    for( it = m_rTree.begin(); it != m_rTree.end();
+         it = m_rTree.getNextItem( it ) )
+    {
+        if( it->m_playing )
+        {
+           m_rTree.ensureExpanded( it );
+           break;
+        }
+    }
     for( it = m_rTree.begin(); it != m_rTree.end();
          it = m_rTree.getNextVisibleItem( it ) )
     {
-        if( it->m_playing ) break;
+        if( it->m_playing )
+           break;
         playIndex++;
     }
 
     if( it == m_rTree.end() ) return;
 
+
     ensureVisible( playIndex );
 }
 

modules/gui/skins2/src/vlcproc.cpp

@@ -421,17 +421,18 @@ int VlcProc::onItemAppend( vlc_object_t *pObj, const char *pVariable,
 
     memcpy( p_add, newVal.p_address, sizeof( playlist_add_t ) ) ;
 
-    // Create a playlist notify command (for old style playlist)
-    CmdNotifyPlaylist *pCmd = new CmdNotifyPlaylist( pThis->getIntf() );
-
-    // Create a playtree notify command (for new style playtree)
+    CmdGenericPtr ptrTree;
     CmdPlaytreeAppend *pCmdTree = new CmdPlaytreeAppend( pThis->getIntf(),
                                                              p_add );
+    ptrTree = CmdGenericPtr( pCmdTree );
+
+    // Create a playlist notify command (for old style playlist)
+    CmdNotifyPlaylist *pCmd = new CmdNotifyPlaylist( pThis->getIntf() );
 
     // Push the command in the asynchronous command queue
     AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
     pQueue->push( CmdGenericPtr( pCmd ) );
-    pQueue->push( CmdGenericPtr( pCmdTree ), false );
+    pQueue->push( ptrTree , false );
 
     return VLC_SUCCESS;
 }

modules/gui/skins2/utils/var_tree.cpp

@@ -202,6 +202,26 @@ VarTree::Iterator VarTree::getNextVisibleItem( Iterator it )
     return it;
 }
 
+VarTree::Iterator VarTree::getNextItem( Iterator it )
+{
+    if( it->size() )
+    {
+        it = it->begin();
+    }
+    else
+    {
+        VarTree::Iterator it_old = it;
+        it++;
+        // Was 'it' the last brother? If so, look for uncles
+        if( it_old->parent() && it_old->parent()->end() == it )
+        {
+            it = it_old->uncle();
+        }
+    }
+    return it;
+}
+
+
 VarTree::Iterator VarTree::findById( int id )
 {
     for (Iterator it = begin(); it != end(); ++it )
@@ -216,3 +236,15 @@ VarTree::Iterator VarTree::findById( int id )
     return end();
 }
 
+
+void VarTree::ensureExpanded( VarTree::Iterator it )
+{
+    /// Don't expand ourselves, only our parents
+    VarTree *current = &(*it);
+    current = current->parent();
+    while( current->parent() != NULL )
+    {
+        current->m_expanded = true;
+        current = current->parent();
+    }
+}

modules/gui/skins2/utils/var_tree.hpp

@@ -37,6 +37,7 @@ typedef struct tree_update
      int i_type;
      int i_parent;
      int i_id;
+     bool b_visible;
 } tree_update;
 
 /// Tree variable
@@ -138,9 +139,15 @@ class VarTree: public Variable, public Subject<VarTree, tree_update*>
         /// Given an iterator to a visible item, return the next visible item
         Iterator getNextVisibleItem( Iterator it );
 
+        /// Given an iterator to an item, return the next item
+        Iterator getNextItem( Iterator it );
+
         /// Find a children node with the given id
         Iterator findById( int id );
 
+        /// Ensure an item is expanded
+        void ensureExpanded( VarTree::Iterator );
+
     private:
         /// List of children
         list<VarTree> m_children;

modules/gui/skins2/vars/playtree.cpp

@@ -34,6 +34,8 @@ Playtree::Playtree( intf_thread_t *pIntf ): VarTree( pIntf )
     // Get the VLC playlist object
     m_pPlaylist = pIntf->p_sys->p_playlist;
 
+    i_items_to_append = 0;
+
     // Try to guess the current charset
     char *pCharset;
     vlc_current_charset( &pCharset );
@@ -77,6 +79,7 @@ void Playtree::delSelected()
             }
         }
     }
+    // TODO: Do this better
     buildTree();
     tree_update descr;
     descr.i_type = 1;
@@ -135,6 +138,8 @@ void Playtree::onUpdateItem( int id )
 
 void Playtree::onAppend( playlist_add_t *p_add )
 {
+    i_items_to_append --;
+
     Iterator node = findById( p_add->i_node );
     if( node != end() )
     {
@@ -152,6 +157,7 @@ void Playtree::onAppend( playlist_add_t *p_add )
     tree_update descr;
     descr.i_id = p_add->i_item;
     descr.i_parent = p_add->i_node;
+    descr.b_visible = node->m_expanded;
     descr.i_type = 2;
     notify( &descr );
 }
@@ -178,6 +184,8 @@ void Playtree::buildTree()
     clear();
     vlc_mutex_lock( &m_pPlaylist->object_lock );
 
+    i_items_to_append = 0;
+
     playlist_view_t *p_view;
     p_view = playlist_ViewFind( m_pPlaylist, VIEW_CATEGORY );
     /* TODO : let the user chose the view type */

modules/gui/skins2/vars/playtree.hpp

@@ -48,6 +48,9 @@ class Playtree: public VarTree
         /// Function called to notify playlist item  append
         void onAppend( playlist_add_t * );
 
+        /// Items waiting to be appended
+        int i_items_to_append;
+
     private:
         /// VLC playlist object
         playlist_t *m_pPlaylist;