delete net uses dirty rect

change_log.txt

@@ -24,6 +24,8 @@ email address.
   * Added WinEDA_DrawPanel::PostDirtyRect()
   * Renamed Supprime_Une_Piste() to Remove_One_Track() and it now uses
     PostDirtyRect().
+  * void WinEDA_PcbFrame::Delete_net( wxDC* DC, TRACK* Track ) now redraws
+    the screen after a net deletion.
 
 
 2008-Mar-10 UPDATE  Jean-Pierre Charras <jean-pierre.charras@inpg.fr>

pcbnew/deltrack.cpp

@@ -149,33 +149,34 @@ void WinEDA_PcbFrame::Delete_Track( wxDC* DC, TRACK* Track )
 void WinEDA_PcbFrame::Delete_net( wxDC* DC, TRACK* Track )
 /********************************************************/
 {
-    TRACK* pt_segm, * pt_start;
-    int    ii;
-    int    net_code_delete;
-
-    pt_segm = Track;
-
-    if( pt_segm == NULL )
+    if( Track == NULL )
         return;
 
     if( IsOK( this, _( "Delete NET ?" ) ) )
     {
-        net_code_delete = pt_segm->GetNet();
+        int    net_code_delete = Track->GetNet();
+
         /* Recherche du debut de la zone des pistes du net_code courant */
-        pt_start = m_Pcb->m_Track->GetStartNetCode( net_code_delete );
+        TRACK* trackList = m_Pcb->m_Track->GetStartNetCode( net_code_delete );
 
         /* Decompte du nombre de segments de la sous-chaine */
-        pt_segm = pt_start;
-        for( ii = 0; pt_segm != NULL; pt_segm = (TRACK*) pt_segm->Pnext )
+
+        int    ii;
+        TRACK* segm = trackList;
+        for( ii = 0;  segm; segm = segm->Next(), ++ii )
         {
-            if( pt_segm->GetNet() != net_code_delete )
+            if( segm->GetNet() != net_code_delete )
                 break;
-            ii++;
+
+            // This works ok, but sometimes leaves stuff on screen.  I think
+            // the erase rectangle is not large enough always.
+            // DrawPanel->PostDirtyRect( segm->GetBoundingBox() );
         }
 
-        Trace_Une_Piste( DrawPanel, DC, pt_start, ii, GR_XOR );
+        // Do this instead of PostDirtyRect() for now
+        DrawPanel->Refresh( TRUE );
 
-        SaveItemEfface( pt_start, ii );
+        SaveItemEfface( trackList, ii );
         GetScreen()->SetModify();
         test_1_net_connexion( DC, net_code_delete );
         m_Pcb->Display_Infos( this );

share/drawpanel.cpp

@@ -271,8 +271,9 @@ void WinEDA_DrawPanel::PostDirtyRect( EDA_Rect aRect )
     // Convert the rect coordinates and size to pixels (make a draw clip box):
     ConvertPcbUnitsToPixelsUnits( &aRect );
 
-    // Ensure the last line and column are in the dirty rectangle after truncations.
-    // The pcb units have finer granularity than the pixels, so this can happen.
+    // Ensure the rectangle is large enough after truncations.
+    // The pcb units have finer granularity than the pixels, so it can happen
+    // that the rectangle is not large enough for the erase portion.
     aRect.m_Size.x += 1;
     aRect.m_Size.y += 1;
 
@@ -538,6 +539,7 @@ void WinEDA_DrawPanel::EraseScreen( wxDC* DC )
 /*********************************************/
 {
     GRSetDrawMode( DC, GR_COPY );
+
     GRSFilledRect( &m_ClipBox, DC, m_ClipBox.GetX(), m_ClipBox.GetY(),
         m_ClipBox.GetRight(), m_ClipBox.GetBottom(),
         g_DrawBgColor, g_DrawBgColor );