X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cf7d6329530d0a9f181ac24dcc722d276885f05e..4760fa91097407e9967efd21f90ef04d69e5bb9c:/src/generic/vscroll.cpp

diff --git a/src/generic/vscroll.cpp b/src/generic/vscroll.cpp
index aa52fab013..5d2ccf0cb6 100644
--- a/src/generic/vscroll.cpp
+++ b/src/generic/vscroll.cpp
@@ -164,15 +164,58 @@ void wxVScrolledWindow::SetLineCount(size_t count)
                                    count/2 + NUM_LINES_TO_SAMPLE/2);
 
         // use the height of the lines we looked as the average
-        m_heightTotal = ((float)m_heightTotal / (3*NUM_LINES_TO_SAMPLE)) *
-                            m_lineMax;
+        m_heightTotal = (wxCoord)
+                (((float)m_heightTotal / (3*NUM_LINES_TO_SAMPLE)) * m_lineMax);
     }
 
 
     // recalculate the scrollbars parameters
+    m_lineFirst = 1;    // make sure it is != 0
     ScrollToLine(0);
 }
 
+void wxVScrolledWindow::RefreshLine(size_t line)
+{
+    // is this line visible?
+    if ( !IsVisible(line) )
+    {
+        // no, it is useless to do anything
+        return;
+    }
+
+    // calculate the rect occupied by this line on screen
+    wxRect rect;
+    rect.width = GetClientSize().x;
+    rect.height = OnGetLineHeight(line);
+    for ( size_t n = GetFirstVisibleLine(); n < line; n++ )
+    {
+        rect.y += OnGetLineHeight(n);
+    }
+
+    // do refresh it
+    RefreshRect(rect);
+}
+
+void wxVScrolledWindow::RefreshAll()
+{
+    UpdateScrollbar();
+
+    Refresh();
+}
+
+int wxVScrolledWindow::HitTest(wxCoord WXUNUSED(x), wxCoord y) const
+{
+    const size_t lineMax = GetLastVisibleLine();
+    for ( size_t line = GetFirstVisibleLine(); line <= lineMax; line++ )
+    {
+        y -= OnGetLineHeight(line);
+        if ( y < 0 )
+            return line;
+    }
+
+    return wxNOT_FOUND;
+}
+
 // ----------------------------------------------------------------------------
 // scrolling
 // ----------------------------------------------------------------------------
@@ -318,5 +361,9 @@ void wxVScrolledWindow::OnScroll(wxScrollWinEvent& event)
     }
 
     ScrollToLine(lineFirstNew);
+
+#ifdef __WXMAC__
+    Update();
+#endif // __WXMAC__
 }