X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8219f7f98211cdf964466d130fd71a87e2282682..8a31648287be0ef976f133de2786b137f1e98340:/src/generic/splitter.cpp?ds=inline

diff --git a/src/generic/splitter.cpp b/src/generic/splitter.cpp
index c5833830c8..dee38940af 100644
--- a/src/generic/splitter.cpp
+++ b/src/generic/splitter.cpp
@@ -118,10 +118,10 @@ void wxSplitterWindow::Init()
     m_oldX = 0;
     m_oldY = 0;
     m_sashStart = 0;
-    m_sashPosition = m_requestedSashPosition = 0;
+    m_sashPosition = 0;
+    m_requestedSashPosition = INT_MAX;
     m_sashGravity = 0.0;
     m_lastSize = wxSize(0,0);
-    m_checkRequestedSashPosition = false;
     m_minimumPaneSize = 0;
     m_sashCursorWE = wxCursor(wxCURSOR_SIZEWE);
     m_sashCursorNS = wxCursor(wxCURSOR_SIZENS);
@@ -193,20 +193,21 @@ void wxSplitterWindow::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();
 
-    // if this is the first idle time after a sash position has potentially
-    // been set, allow SizeWindows to check for a requested size.
-    if (!m_checkRequestedSashPosition)
+    // We may need to update the children sizes in two cases: either because
+    // we're in the middle of a live update as indicated by m_needUpdating or
+    // because we have a requested but not yet set sash position as indicated
+    // by m_requestedSashPosition having a valid value.
+    if ( m_needUpdating )
     {
-        m_checkRequestedSashPosition = true;
-        SizeWindows();
-        return; // it won't needUpdating in this case
+        m_needUpdating = false;
     }
-
-    if (m_needUpdating)
+    else if ( m_requestedSashPosition == INT_MAX )
     {
-        m_needUpdating = false;
-        SizeWindows();
+        // We don't need to resize the children.
+        return;
     }
+
+    SizeWindows();
 }
 
 void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
@@ -434,37 +435,44 @@ void wxSplitterWindow::OnSize(wxSizeEvent& event)
         return;
     }
 
-    if ( m_windowTwo )
-    {
-        int w, h;
-        GetClientSize(&w, &h);
+    const wxSize curSize = event.GetSize();
 
-        int size = m_splitMode == wxSPLIT_VERTICAL ? w : h;
+    // Update the sash position if needed.
+    //
+    // Notice that we shouldn't do this if the sash position requested by user
+    // couldn't be set yet as it would never be taken into account at all if we
+    // modified it before this happens.
+    if ( m_windowTwo && m_requestedSashPosition == INT_MAX )
+    {
+        int size = m_splitMode == wxSPLIT_VERTICAL ? curSize.x : curSize.y;
 
         int old_size = m_splitMode == wxSPLIT_VERTICAL ? m_lastSize.x : m_lastSize.y;
 
-        // Don't do anything if the size didn't really change. In particular,
-        // it is important that we don't reset our sash position because it's
-        // out of current range in this case as otherwise the really requested
-        // position would be lost and never set. Wait until we get a real size
-        // event with our non-initial size to do it.
+        // Don't do anything if the size didn't really change.
         if ( size != old_size )
         {
+            int newPosition = -1;
+
+            // Apply gravity if we use it.
             int delta = (int) ( (size - old_size)*m_sashGravity );
             if ( delta != 0 )
             {
-                int newPosition = m_sashPosition + delta;
+                newPosition = m_sashPosition + delta;
                 if( newPosition < m_minimumPaneSize )
                     newPosition = m_minimumPaneSize;
-                SetSashPositionAndNotify(newPosition);
             }
 
-            if ( m_sashPosition >= size - 5 )
-                SetSashPositionAndNotify(wxMax(10, size - 40));
-            m_lastSize = wxSize(w,h);
+            // Also check if the second window became too small.
+            newPosition = AdjustSashPosition(newPosition == -1
+                                                 ? m_sashPosition
+                                                 : newPosition);
+            if ( newPosition != m_sashPosition )
+                SetSashPositionAndNotify(newPosition);
         }
     }
 
+    m_lastSize = curSize;
+
     SizeWindows();
 }
 
@@ -646,7 +654,7 @@ void wxSplitterWindow::SetSashPositionAndNotify(int sashPos)
 void wxSplitterWindow::SizeWindows()
 {
     // check if we have delayed setting the real sash position
-    if ( m_checkRequestedSashPosition && m_requestedSashPosition != INT_MAX )
+    if ( m_requestedSashPosition != INT_MAX )
     {
         int newSashPosition = ConvertSashPosition(m_requestedSashPosition);
         if ( newSashPosition != m_sashPosition )
@@ -847,7 +855,6 @@ void wxSplitterWindow::SetSashPosition(int position, bool redraw)
     // remember the sash position we want to set for later if we can't set it
     // right now (e.g. because the window is too small)
     m_requestedSashPosition = position;
-    m_checkRequestedSashPosition = false;
 
     DoSetSashPosition(ConvertSashPosition(position));
 
@@ -862,9 +869,7 @@ void wxSplitterWindow::SetSashPosition(int position, bool redraw)
 // window is shown, if you know the overall size is correct.
 void wxSplitterWindow::UpdateSize()
 {
-    m_checkRequestedSashPosition = true;
     SizeWindows();
-    m_checkRequestedSashPosition = false;
 }
 
 bool wxSplitterWindow::DoSendEvent(wxSplitterEvent& event)