Fix crash on wxDataViewCtrl creation after r73565.

[wxWidgets.git] / src / generic / splitter.cpp

diff --git a/src/generic/splitter.cpp b/src/generic/splitter.cpp
index e4f0ad4b395bf272637ad3a6d9484a881e8d730d..1db5638513fc1c0c56fea11f27d81a69f55c58b5 100644 (file)
--- a/src/generic/splitter.cpp
+++ b/src/generic/splitter.cpp
@@ -9,24 +9,23 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-    #pragma implementation "splitter.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 

-#if wxUSE_SPLITTER
-

 #ifdef __BORLANDC__
     #pragma hdrstop
 #endif
 
 #ifdef __BORLANDC__
     #pragma hdrstop
 #endif
 

+#if wxUSE_SPLITTER
+
+#include "wx/splitter.h"
+

 #ifndef WX_PRECOMP
     #include "wx/string.h"
     #include "wx/utils.h"
     #include "wx/log.h"
 
 #ifndef WX_PRECOMP
     #include "wx/string.h"
     #include "wx/utils.h"
     #include "wx/log.h"
 

+    #include "wx/dcclient.h"

     #include "wx/dcscreen.h"
 
     #include "wx/window.h"
     #include "wx/dcscreen.h"
 
     #include "wx/window.h"


@@ -38,31 +37,49 @@
 
 #include "wx/renderer.h"
 
 
 #include "wx/renderer.h"
 

-#include "wx/splitter.h"
-

 #include <stdlib.h>
 
 #include <stdlib.h>
 

-DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED)
-DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING)
-DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_DOUBLECLICKED)
-DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_UNSPLIT)
+wxDEFINE_EVENT( wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED, wxSplitterEvent );
+wxDEFINE_EVENT( wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING, wxSplitterEvent );
+wxDEFINE_EVENT( wxEVT_COMMAND_SPLITTER_DOUBLECLICKED, wxSplitterEvent );
+wxDEFINE_EVENT( wxEVT_COMMAND_SPLITTER_UNSPLIT, wxSplitterEvent );

 
 IMPLEMENT_DYNAMIC_CLASS(wxSplitterWindow, wxWindow)
 
 IMPLEMENT_DYNAMIC_CLASS(wxSplitterWindow, wxWindow)

+
+/*
+    TODO PROPERTIES
+        style wxSP_3D
+        sashpos (long , 0 )
+        minsize (long -1 )
+        object, object_ref
+        orientation
+*/
+

 IMPLEMENT_DYNAMIC_CLASS(wxSplitterEvent, wxNotifyEvent)
 
 BEGIN_EVENT_TABLE(wxSplitterWindow, wxWindow)
     EVT_PAINT(wxSplitterWindow::OnPaint)
     EVT_SIZE(wxSplitterWindow::OnSize)
     EVT_MOUSE_EVENTS(wxSplitterWindow::OnMouseEvent)
 IMPLEMENT_DYNAMIC_CLASS(wxSplitterEvent, wxNotifyEvent)
 
 BEGIN_EVENT_TABLE(wxSplitterWindow, wxWindow)
     EVT_PAINT(wxSplitterWindow::OnPaint)
     EVT_SIZE(wxSplitterWindow::OnSize)
     EVT_MOUSE_EVENTS(wxSplitterWindow::OnMouseEvent)

+    EVT_MOUSE_CAPTURE_LOST(wxSplitterWindow::OnMouseCaptureLost)

 
 #if defined( __WXMSW__ ) || defined( __WXMAC__)
     EVT_SET_CURSOR(wxSplitterWindow::OnSetCursor)
 #endif // wxMSW
 
 #if defined( __WXMSW__ ) || defined( __WXMAC__)
     EVT_SET_CURSOR(wxSplitterWindow::OnSetCursor)
 #endif // wxMSW

-
-    WX_EVENT_TABLE_CONTROL_CONTAINER(wxSplitterWindow)

 END_EVENT_TABLE()
 
 END_EVENT_TABLE()
 

-WX_DELEGATE_TO_CONTROL_CONTAINER(wxSplitterWindow);
+static bool IsLive(wxSplitterWindow* wnd)
+{
+    // with wxSP_LIVE_UPDATE style the splitter windows are always resized
+    // following the mouse movement while it drags the sash, without it we only
+    // draw the sash at the new position but only resize the windows when the
+    // dragging is finished
+#if defined( __WXMAC__ ) && defined(TARGET_API_MAC_OSX) && TARGET_API_MAC_OSX == 1
+    return true; // Mac can't paint outside paint event - always need live mode
+#else
+    return wnd->HasFlag(wxSP_LIVE_UPDATE);
+#endif
+}

 
 bool wxSplitterWindow::Create(wxWindow *parent, wxWindowID id,
                                    const wxPoint& pos,
 
 bool wxSplitterWindow::Create(wxWindow *parent, wxWindowID id,
                                    const wxPoint& pos,


@@ -73,42 +90,44 @@ bool wxSplitterWindow::Create(wxWindow *parent, wxWindowID id,
     // allow TABbing from one window to the other
     style |= wxTAB_TRAVERSAL;
 
     // allow TABbing from one window to the other
     style |= wxTAB_TRAVERSAL;
 

-    // we draw our border ourselves to blend the sash with it
-    style &= ~wxBORDER_MASK;
-    style |= wxBORDER_NONE;
-
-    // we don't need to be completely repainted after resize and doing it
-    // results in horrible flicker
-    style |= wxNO_FULL_REPAINT_ON_RESIZE;
-

     if ( !wxWindow::Create(parent, id, pos, size, style, name) )
     if ( !wxWindow::Create(parent, id, pos, size, style, name) )

-        return FALSE;
+        return false;
+
+    m_lastSize = GetClientSize();

 
     m_permitUnsplitAlways = (style & wxSP_PERMIT_UNSPLIT) != 0;
 
 
     m_permitUnsplitAlways = (style & wxSP_PERMIT_UNSPLIT) != 0;
 

-    return TRUE;
+    // FIXME: with this line the background is not erased at all under GTK1,
+    //        so temporary avoid it there
+#if !defined(__WXGTK__) || defined(__WXGTK20__)
+    // don't erase the splitter background, it's pointless as we overwrite it
+    // anyhow
+    SetBackgroundStyle(wxBG_STYLE_CUSTOM);
+#endif
+
+    return true;

 }
 
 void wxSplitterWindow::Init()
 {
 }
 
 void wxSplitterWindow::Init()
 {

-    m_container.SetContainerWindow(this);
-

     m_splitMode = wxSPLIT_VERTICAL;
     m_splitMode = wxSPLIT_VERTICAL;

-    m_permitUnsplitAlways = TRUE;
-    m_windowOne = (wxWindow *) NULL;
-    m_windowTwo = (wxWindow *) NULL;
+    m_permitUnsplitAlways = true;
+    m_windowOne = NULL;
+    m_windowTwo = NULL;

     m_dragMode = wxSPLIT_DRAG_NONE;
     m_oldX = 0;
     m_oldY = 0;
     m_dragMode = wxSPLIT_DRAG_NONE;
     m_oldX = 0;
     m_oldY = 0;

-    m_firstX = 0;
-    m_firstY = 0;
-    m_sashPosition = m_requestedSashPosition = 0;
+    m_sashStart = 0;
+    m_sashPosition = 0;
+    m_requestedSashPosition = INT_MAX;
+    m_sashGravity = 0.0;
+    m_lastSize = wxSize(0,0);

     m_minimumPaneSize = 0;
     m_sashCursorWE = wxCursor(wxCURSOR_SIZEWE);
     m_sashCursorNS = wxCursor(wxCURSOR_SIZENS);
     m_minimumPaneSize = 0;
     m_sashCursorWE = wxCursor(wxCURSOR_SIZEWE);
     m_sashCursorNS = wxCursor(wxCURSOR_SIZENS);

-    m_sashTrackerPen = new wxPen(*wxBLACK, 2, wxSOLID);
+    m_sashTrackerPen = new wxPen(*wxBLACK, 2, wxPENSTYLE_SOLID);

 
 

-    m_needUpdating = FALSE;
+    m_needUpdating = false;

     m_isHot = false;
 }
 
     m_isHot = false;
 }
 


@@ -160,6 +179,12 @@ void wxSplitterWindow::SetResizeCursor()
 void wxSplitterWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 {
     wxPaintDC dc(this);
 void wxSplitterWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 {
     wxPaintDC dc(this);

+#ifdef __WXOSX__
+    // as subpanels might have a transparent background we must erase the background
+    // at least on OSX, otherwise traces of the sash will remain
+    // test with: splitter sample->replace right window
+    dc.Clear();
+#endif

 
     DrawSash(dc);
 }
 
     DrawSash(dc);
 }


@@ -167,9 +192,22 @@ void wxSplitterWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 void wxSplitterWindow::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();
 void wxSplitterWindow::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();

-    
-    if (m_needUpdating)
-        SizeWindows();
+
+    // 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_needUpdating = false;
+    }
+    else if ( m_requestedSashPosition == INT_MAX )
+    {
+        // We don't need to resize the children.
+        return;
+    }
+
+    SizeWindows();

 }
 
 void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
 }
 
 void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)


@@ -177,14 +215,13 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
     int x = (int)event.GetX(),
         y = (int)event.GetY();
 
     int x = (int)event.GetX(),
         y = (int)event.GetY();
 

-    if (GetWindowStyle() & wxSP_NOSASH)
+    if ( GetWindowStyle() & wxSP_NOSASH )
+    {
+        event.Skip();

         return;
         return;

+    }

 
 

-    // with wxSP_LIVE_UPDATE style the splitter windows are always resized
-    // following the mouse movement while it drags the sash, without it we only
-    // draw the sash at the new position but only resize the windows when the
-    // dragging is finished
-    bool isLive = (GetWindowStyleFlag() & wxSP_LIVE_UPDATE) != 0;
+    bool isLive = IsLive(this);

 
     if (event.LeftDown())
     {
 
     if (event.LeftDown())
     {


@@ -192,7 +229,7 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
         {
             // Start the drag now
             m_dragMode = wxSPLIT_DRAG_DRAGGING;
         {
             // Start the drag now
             m_dragMode = wxSPLIT_DRAG_DRAGGING;

-            
+

             // Capture mouse and set the cursor
             CaptureMouse();
             SetResizeCursor();
             // Capture mouse and set the cursor
             CaptureMouse();
             SetResizeCursor();


@@ -203,13 +240,13 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
                 // shadow sash
                 m_sashPositionCurrent = m_sashPosition;
 
                 // shadow sash
                 m_sashPositionCurrent = m_sashPosition;
 

-                DrawSashTracker(x, y);
+                m_oldX = (m_splitMode == wxSPLIT_VERTICAL ? m_sashPositionCurrent : x);
+                m_oldY = (m_splitMode != wxSPLIT_VERTICAL ? m_sashPositionCurrent : y);
+                DrawSashTracker(m_oldX, m_oldY);

             }
 
             }
 

-            m_oldX = x;
-            m_oldY = y;
-
-            SetResizeCursor();
+            m_ptStart = wxPoint(x,y);
+            m_sashStart = m_sashPosition;

             return;
         }
     }
             return;
         }
     }


@@ -217,7 +254,7 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
     {
         // We can stop dragging now and see what we've got.
         m_dragMode = wxSPLIT_DRAG_NONE;
     {
         // We can stop dragging now and see what we've got.
         m_dragMode = wxSPLIT_DRAG_NONE;

-        
+

         // Release mouse and unset the cursor
         ReleaseMouse();
         SetCursor(* wxSTANDARD_CURSOR);
         // Release mouse and unset the cursor
         ReleaseMouse();
         SetCursor(* wxSTANDARD_CURSOR);


@@ -237,10 +274,9 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
         // the position of the click doesn't exactly correspond to
         // m_sashPosition, rather it changes it by the distance by which the
         // mouse has moved
         // the position of the click doesn't exactly correspond to
         // m_sashPosition, rather it changes it by the distance by which the
         // mouse has moved

-        int diff = m_splitMode == wxSPLIT_VERTICAL ? x - m_oldX : y - m_oldY;
+        int diff = m_splitMode == wxSPLIT_VERTICAL ? x - m_ptStart.x : y - m_ptStart.y;

 
 

-        int posSashOld = isLive ? m_sashPosition : m_sashPositionCurrent;
-        int posSashNew = OnSashPositionChanging(posSashOld + diff);
+        int posSashNew = OnSashPositionChanging(m_sashStart + diff);

         if ( posSashNew == -1 )
         {
             // change not allowed
         if ( posSashNew == -1 )
         {
             // change not allowed


@@ -255,22 +291,22 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
                 // We remove the first window from the view
                 wxWindow *removedWindow = m_windowOne;
                 m_windowOne = m_windowTwo;
                 // We remove the first window from the view
                 wxWindow *removedWindow = m_windowOne;
                 m_windowOne = m_windowTwo;

-                m_windowTwo = (wxWindow *) NULL;
+                m_windowTwo = NULL;

                 OnUnsplit(removedWindow);
                 OnUnsplit(removedWindow);

-                wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_UNSPLIT, this);
-                event.m_data.win = removedWindow;
-                (void)DoSendEvent(event);
+                wxSplitterEvent eventUnsplit(wxEVT_COMMAND_SPLITTER_UNSPLIT, this);
+                eventUnsplit.m_data.win = removedWindow;
+                (void)DoSendEvent(eventUnsplit);

                 SetSashPositionAndNotify(0);
             }
             else if ( posSashNew == GetWindowSize() )
             {
                 // We remove the second window from the view
                 wxWindow *removedWindow = m_windowTwo;
                 SetSashPositionAndNotify(0);
             }
             else if ( posSashNew == GetWindowSize() )
             {
                 // We remove the second window from the view
                 wxWindow *removedWindow = m_windowTwo;

-                m_windowTwo = (wxWindow *) NULL;
+                m_windowTwo = NULL;

                 OnUnsplit(removedWindow);
                 OnUnsplit(removedWindow);

-                wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_UNSPLIT, this);
-                event.m_data.win = removedWindow;
-                (void)DoSendEvent(event);
+                wxSplitterEvent eventUnsplit(wxEVT_COMMAND_SPLITTER_UNSPLIT, this);
+                eventUnsplit.m_data.win = removedWindow;
+                (void)DoSendEvent(eventUnsplit);

                 SetSashPositionAndNotify(0);
             }
             else
                 SetSashPositionAndNotify(0);
             }
             else


@@ -294,69 +330,80 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
     }
     else if (event.Dragging() && (m_dragMode == wxSPLIT_DRAG_DRAGGING))
     {
     }
     else if (event.Dragging() && (m_dragMode == wxSPLIT_DRAG_DRAGGING))
     {

-        int diff = m_splitMode == wxSPLIT_VERTICAL ? x - m_oldX : y - m_oldY;
-        if ( !diff )
-        {
-            // nothing to do, mouse didn't really move far enough
-            return;
-        }
+        int diff = m_splitMode == wxSPLIT_VERTICAL ? x - m_ptStart.x : y - m_ptStart.y;

 
 

-        int posSashOld = isLive ? m_sashPosition : m_sashPositionCurrent;
-        int posSashNew = OnSashPositionChanging(posSashOld + diff);
+        int posSashNew = OnSashPositionChanging(m_sashStart + diff);

         if ( posSashNew == -1 )
         {
             // change not allowed
             return;
         }
 
         if ( posSashNew == -1 )
         {
             // change not allowed
             return;
         }
 

-        if ( posSashNew == m_sashPosition )
-            return;
-
-        // Erase old tracker

         if ( !isLive )
         {
         if ( !isLive )
         {

-            DrawSashTracker(m_oldX, m_oldY);
-        }
+            if ( posSashNew == m_sashPositionCurrent )
+                return;

 
 

-        if (m_splitMode == wxSPLIT_VERTICAL)
-            x = posSashNew;
-        else
-            y = posSashNew;
+            m_sashPositionCurrent = posSashNew;

 
 

-        // Remember old positions
-        m_oldX = x;
-        m_oldY = y;
+            // Erase old tracker
+            DrawSashTracker(m_oldX, m_oldY);
+
+            m_oldX = (m_splitMode == wxSPLIT_VERTICAL ? m_sashPositionCurrent : x);
+            m_oldY = (m_splitMode != wxSPLIT_VERTICAL ? m_sashPositionCurrent : y);

 
 #ifdef __WXMSW__
 
 #ifdef __WXMSW__

-        // As we captured the mouse, we may get the mouse events from outside
-        // our window - for example, negative values in x, y. This has a weird
-        // consequence under MSW where we use unsigned values sometimes and
-        // signed ones other times: the coordinates turn as big positive
-        // numbers and so the sash is drawn on the *right* side of the window
-        // instead of the left (or bottom instead of top). Correct this.
-        if ( (short)m_oldX < 0 )
-            m_oldX = 0;
-        if ( (short)m_oldY < 0 )
-            m_oldY = 0;
+            // As we captured the mouse, we may get the mouse events from outside
+            // our window - for example, negative values in x, y. This has a weird
+            // consequence under MSW where we use unsigned values sometimes and
+            // signed ones other times: the coordinates turn as big positive
+            // numbers and so the sash is drawn on the *right* side of the window
+            // instead of the left (or bottom instead of top). Correct this.
+            if ( (short)m_oldX < 0 )
+                m_oldX = 0;
+            if ( (short)m_oldY < 0 )
+                m_oldY = 0;

 #endif // __WXMSW__
 
 #endif // __WXMSW__
 

-        // Draw new one
-        if ( !isLive )
-        {
-            m_sashPositionCurrent = posSashNew;
-
+            // Draw new one

             DrawSashTracker(m_oldX, m_oldY);
         }
         else
         {
             DrawSashTracker(m_oldX, m_oldY);
         }
         else
         {

-            SetSashPositionAndNotify(posSashNew);
-            m_needUpdating = TRUE;
+            if ( posSashNew == m_sashPosition )
+                return;
+
+            DoSetSashPosition(posSashNew);
+
+            // in live mode, the new position is the actual sash position, clear requested position!
+            m_requestedSashPosition = INT_MAX;
+            m_needUpdating = true;

         }
     }
     else if ( event.LeftDClick() && m_windowTwo )
     {
         OnDoubleClickSash(x, y);
     }
         }
     }
     else if ( event.LeftDClick() && m_windowTwo )
     {
         OnDoubleClickSash(x, y);
     }

+    else
+    {
+        event.Skip();
+    }
+}
+
+void wxSplitterWindow::OnMouseCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
+{
+    if (m_dragMode != wxSPLIT_DRAG_DRAGGING)
+        return;
+
+    m_dragMode = wxSPLIT_DRAG_NONE;
+
+    SetCursor(* wxSTANDARD_CURSOR);
+
+    // Erase old tracker
+    if ( !IsLive(this) )
+    {
+        DrawSashTracker(m_oldX, m_oldY);
+    }

 }
 
 void wxSplitterWindow::OnSize(wxSizeEvent& event)
 }
 
 void wxSplitterWindow::OnSize(wxSizeEvent& event)


@@ -364,13 +411,8 @@ void wxSplitterWindow::OnSize(wxSizeEvent& event)
     // only process this message if we're not iconized - otherwise iconizing
     // and restoring a window containing the splitter has a funny side effect
     // of changing the splitter position!
     // only process this message if we're not iconized - otherwise iconizing
     // and restoring a window containing the splitter has a funny side effect
     // of changing the splitter position!

-    wxWindow *parent = GetParent();
-    while ( parent && !parent->IsTopLevel() )
-    {
-        parent = parent->GetParent();
-    }
-
-    bool iconized = FALSE;
+    wxWindow *parent = wxGetTopLevelParent(this);
+    bool iconized;

 
     wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
     if ( winTop )
 
     wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
     if ( winTop )


@@ -381,41 +423,90 @@ void wxSplitterWindow::OnSize(wxSizeEvent& event)
     {
         wxFAIL_MSG(wxT("should have a top level parent!"));
 
     {
         wxFAIL_MSG(wxT("should have a top level parent!"));
 

-        iconized = FALSE;
+        iconized = false;

     }
 
     if ( iconized )
     {
     }
 
     if ( iconized )
     {

+        m_lastSize = wxSize(0,0);
+

         event.Skip();
 
         return;
     }
 
         event.Skip();
 
         return;
     }
 

-    if ( m_windowTwo )
+    const wxSize curSize = event.GetSize();
+
+    // 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 w, h;
-        GetClientSize(&w, &h);
+        int size = m_splitMode == wxSPLIT_VERTICAL ? curSize.x : curSize.y;
+
+        int old_size = m_splitMode == wxSPLIT_VERTICAL ? m_lastSize.x : m_lastSize.y;

 
 

-        int size = m_splitMode == wxSPLIT_VERTICAL ? w : h;
-        if ( m_sashPosition >= size - 5 )
-            SetSashPositionAndNotify(wxMax(10, size - 40));
+        // 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 )
+            {
+                newPosition = m_sashPosition + delta;
+                if( newPosition < m_minimumPaneSize )
+                    newPosition = m_minimumPaneSize;
+            }
+
+            // 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();
 }
 
     SizeWindows();
 }
 

-bool wxSplitterWindow::SashHitTest(int x, int y, int tolerance)
+void wxSplitterWindow::SetSashGravity(double gravity)
+{
+    wxCHECK_RET( gravity >= 0. && gravity <= 1.,
+                    wxT("invalid gravity value") );
+
+    m_sashGravity = gravity;
+}
+
+bool wxSplitterWindow::SashHitTest(int x, int y)

 {
     if ( m_windowTwo == NULL || m_sashPosition == 0)
 {
     if ( m_windowTwo == NULL || m_sashPosition == 0)

-        return FALSE; // No sash
+        return false; // No sash

 
     int z = m_splitMode == wxSPLIT_VERTICAL ? x : y;
 
     int z = m_splitMode == wxSPLIT_VERTICAL ? x : y;

+    int hitMax = m_sashPosition + GetSashSize() - 1;

 
 

-    return z >= m_sashPosition - tolerance &&
-            z <= m_sashPosition + GetSashSize() + tolerance;
+    return z >= m_sashPosition && z <= hitMax;
+}
+
+void wxSplitterWindow::SetSashInvisible(bool invisible)
+{
+    if ( IsSashInvisible() != invisible )
+        ToggleWindowStyle(wxSP_NOSASH);

 }
 
 int wxSplitterWindow::GetSashSize() const
 }
 
 int wxSplitterWindow::GetSashSize() const

+{
+    return IsSashInvisible() ? 0 : GetDefaultSashSize();
+}
+
+int wxSplitterWindow::GetDefaultSashSize() const

 {
     return wxRendererNative::Get().GetSplitterParams(this).widthSash;
 }
 {
     return wxRendererNative::Get().GetSplitterParams(this).widthSash;
 }


@@ -428,7 +519,8 @@ int wxSplitterWindow::GetBorderSize() const
 // Draw the sash
 void wxSplitterWindow::DrawSash(wxDC& dc)
 {
 // Draw the sash
 void wxSplitterWindow::DrawSash(wxDC& dc)
 {

-    wxRendererNative::Get().DrawSplitterBorder
+    if (HasFlag(wxSP_3DBORDER))
+        wxRendererNative::Get().DrawSplitterBorder

                             (
                                 this,
                                 dc,
                             (
                                 this,
                                 dc,


@@ -440,7 +532,7 @@ void wxSplitterWindow::DrawSash(wxDC& dc)
         return;
 
     // nor if we're configured to not show it
         return;
 
     // nor if we're configured to not show it

-    if ( HasFlag(wxSP_NOSASH) )
+    if ( IsSashInvisible() )

         return;
 
     wxRendererNative::Get().DrawSplitterSash
         return;
 
     wxRendererNative::Get().DrawSplitterSash


@@ -451,7 +543,7 @@ void wxSplitterWindow::DrawSash(wxDC& dc)
                                 m_sashPosition,
                                 m_splitMode == wxSPLIT_VERTICAL ? wxVERTICAL
                                                                 : wxHORIZONTAL,
                                 m_sashPosition,
                                 m_splitMode == wxSPLIT_VERTICAL ? wxVERTICAL
                                                                 : wxHORIZONTAL,

-                                m_isHot ? wxCONTROL_CURRENT : 0
+                                m_isHot ? (int)wxCONTROL_CURRENT : 0

                             );
 }
 
                             );
 }
 


@@ -467,33 +559,15 @@ void wxSplitterWindow::DrawSashTracker(int x, int y)
 
     if ( m_splitMode == wxSPLIT_VERTICAL )
     {
 
     if ( m_splitMode == wxSPLIT_VERTICAL )
     {

-        x1 = x; y1 = 2;
-        x2 = x; y2 = h-2;
-
-        if ( x1 > w )
-        {
-            x1 = w; x2 = w;
-        }
-        else if ( x1 < 0 )
-        {
-            x1 = 0; x2 = 0;
-        }
+        x1 = x2 = wxClip(x, 0, w) + m_sashTrackerPen->GetWidth()/2;
+        y1 = 2;
+        y2 = h-2;

     }
     else
     {
     }
     else
     {

-        x1 = 2; y1 = y;
-        x2 = w-2; y2 = y;
-
-        if ( y1 > h )
-        {
-            y1 = h;
-            y2 = h;
-        }
-        else if ( y1 < 0 )
-        {
-            y1 = 0;
-            y2 = 0;
-        }
+        y1 = y2 = wxClip(y, 0, h) + m_sashTrackerPen->GetWidth()/2;
+        x1 = 2;
+        x2 = w-2;

     }
 
     ClientToScreen(&x1, &y1);
     }
 
     ClientToScreen(&x1, &y1);


@@ -517,8 +591,6 @@ int wxSplitterWindow::GetWindowSize() const
 
 int wxSplitterWindow::AdjustSashPosition(int sashPos) const
 {
 
 int wxSplitterWindow::AdjustSashPosition(int sashPos) const
 {

-    int window_size = GetWindowSize();
-

     wxWindow *win;
 
     win = GetWindow1();
     wxWindow *win;
 
     win = GetWindow1();


@@ -547,8 +619,8 @@ int wxSplitterWindow::AdjustSashPosition(int sashPos) const
         if ( minSize == -1 || m_minimumPaneSize > minSize )
             minSize = m_minimumPaneSize;
 
         if ( minSize == -1 || m_minimumPaneSize > minSize )
             minSize = m_minimumPaneSize;
 

-        int maxSize = window_size - minSize - GetBorderSize();
-        if ( sashPos > maxSize )
+        int maxSize = GetWindowSize() - minSize - GetBorderSize() - GetSashSize();
+        if ( maxSize > 0 && sashPos > maxSize && maxSize >= m_minimumPaneSize)

             sashPos = maxSize;
     }
 
             sashPos = maxSize;
     }
 


@@ -560,22 +632,30 @@ bool wxSplitterWindow::DoSetSashPosition(int sashPos)
     int newSashPosition = AdjustSashPosition(sashPos);
 
     if ( newSashPosition == m_sashPosition )
     int newSashPosition = AdjustSashPosition(sashPos);
 
     if ( newSashPosition == m_sashPosition )

-        return FALSE;
+        return false;

 
     m_sashPosition = newSashPosition;
 
 
     m_sashPosition = newSashPosition;
 

-    return TRUE;
+    return true;

 }
 
 void wxSplitterWindow::SetSashPositionAndNotify(int sashPos)
 {
 }
 
 void wxSplitterWindow::SetSashPositionAndNotify(int sashPos)
 {

-    if ( DoSetSashPosition(sashPos) )
-    {
-        wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED, this);
-        event.m_data.pos = m_sashPosition;
+    // we must reset the request here, otherwise the sash would be stuck at
+    // old position if the user attempted to move the sash after invalid
+    // (e.g. smaller than minsize) sash position was requested using
+    // SetSashPosition():
+    m_requestedSashPosition = INT_MAX;

 
 

-        (void)DoSendEvent(event);
-    }
+    // note that we must send the event in any case, i.e. even if the sash
+    // position hasn't changed and DoSetSashPosition() returns false because we
+    // must generate a CHANGED event at the end of resizing
+    DoSetSashPosition(sashPos);
+
+    wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED, this);
+    event.m_data.pos = m_sashPosition;
+
+    (void)DoSendEvent(event);

 }
 
 // Position and size subwindows.
 }
 
 // Position and size subwindows.


@@ -621,71 +701,79 @@ void wxSplitterWindow::SizeWindows()
         {
             w1 = size1;
             w2 = w - 2*border - sash - w1;
         {
             w1 = size1;
             w2 = w - 2*border - sash - w1;

-            h1 =
+            if (w2 < 0)
+                w2 = 0;

             h2 = h - 2*border;
             h2 = h - 2*border;

+            if (h2 < 0)
+                h2 = 0;
+            h1 = h2;

             x2 = size2;
             y2 = border;
         }
         else // horz splitter
         {
             x2 = size2;
             y2 = border;
         }
         else // horz splitter
         {

-            w1 =

             w2 = w - 2*border;
             w2 = w - 2*border;

+            if (w2 < 0)
+                w2 = 0;
+            w1 = w2;

             h1 = size1;
             h2 = h - 2*border - sash - h1;
             h1 = size1;
             h2 = h - 2*border - sash - h1;

+            if (h2 < 0)
+                h2 = 0;

             x2 = border;
             y2 = size2;
         }
 
             x2 = border;
             y2 = size2;
         }
 

-        GetWindow1()->SetSize(border, border, w1, h1);

         GetWindow2()->SetSize(x2, y2, w2, h2);
         GetWindow2()->SetSize(x2, y2, w2, h2);

+        GetWindow1()->SetSize(border, border, w1, h1);

     }
 
     wxClientDC dc(this);
     DrawSash(dc);
     }
 
     wxClientDC dc(this);
     DrawSash(dc);

-
-    SetNeedUpdating(FALSE);

 }
 
 // Set pane for unsplit window
 void wxSplitterWindow::Initialize(wxWindow *window)
 {
 }
 
 // Set pane for unsplit window
 void wxSplitterWindow::Initialize(wxWindow *window)
 {

-    wxASSERT_MSG( window && window->GetParent() == this,
-                  _T("windows in the splitter should have it as parent!") );
+    wxASSERT_MSG( (!window || window->GetParent() == this),
+                  wxT("windows in the splitter should have it as parent!") );
+
+    if (window && !window->IsShown())
+        window->Show();

 
     m_windowOne = window;
 
     m_windowOne = window;

-    m_windowTwo = (wxWindow *) NULL;
+    m_windowTwo = NULL;

     DoSetSashPosition(0);
 }
 
 // Associates the given window with window 2, drawing the appropriate sash
 // and changing the split mode.
     DoSetSashPosition(0);
 }
 
 // Associates the given window with window 2, drawing the appropriate sash
 // and changing the split mode.

-// Does nothing and returns FALSE if the window is already split.
+// Does nothing and returns false if the window is already split.

 bool wxSplitterWindow::DoSplit(wxSplitMode mode,
                                wxWindow *window1, wxWindow *window2,
                                int sashPosition)
 {
     if ( IsSplit() )
 bool wxSplitterWindow::DoSplit(wxSplitMode mode,
                                wxWindow *window1, wxWindow *window2,
                                int sashPosition)
 {
     if ( IsSplit() )

-        return FALSE;
+        return false;
+
+    wxCHECK_MSG( window1 && window2, false,
+                 wxT("cannot split with NULL window(s)") );

 
 

-    wxCHECK_MSG( window1 && window2, FALSE,
-                 _T("can not split with NULL window(s)") );
+    wxCHECK_MSG( window1->GetParent() == this && window2->GetParent() == this, false,
+                  wxT("windows in the splitter should have it as parent!") );

 
 

-    wxCHECK_MSG( window1->GetParent() == this && window2->GetParent() == this, FALSE,
-                  _T("windows in the splitter should have it as parent!") );
+    if (! window1->IsShown())
+        window1->Show();
+    if (! window2->IsShown())
+        window2->Show();

 
     m_splitMode = mode;
     m_windowOne = window1;
     m_windowTwo = window2;
 
 
     m_splitMode = mode;
     m_windowOne = window1;
     m_windowTwo = window2;
 

-    // 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 = sashPosition;
-
-    DoSetSashPosition(ConvertSashPosition(sashPosition));
-
-    SizeWindows();

 
 

-    return TRUE;
+    SetSashPosition(sashPosition, true);
+    return true;

 }
 
 int wxSplitterWindow::ConvertSashPosition(int sashPosition) const
 }
 
 int wxSplitterWindow::ConvertSashPosition(int sashPosition) const


@@ -711,39 +799,39 @@ int wxSplitterWindow::ConvertSashPosition(int sashPosition) const
 bool wxSplitterWindow::Unsplit(wxWindow *toRemove)
 {
     if ( ! IsSplit() )
 bool wxSplitterWindow::Unsplit(wxWindow *toRemove)
 {
     if ( ! IsSplit() )

-        return FALSE;
+        return false;

 
 

-    wxWindow *win = NULL;
+    wxWindow *win;

     if ( toRemove == NULL || toRemove == m_windowTwo)
     {
         win = m_windowTwo ;
     if ( toRemove == NULL || toRemove == m_windowTwo)
     {
         win = m_windowTwo ;

-        m_windowTwo = (wxWindow *) NULL;
+        m_windowTwo = NULL;

     }
     else if ( toRemove == m_windowOne )
     {
         win = m_windowOne ;
         m_windowOne = m_windowTwo;
     }
     else if ( toRemove == m_windowOne )
     {
         win = m_windowOne ;
         m_windowOne = m_windowTwo;

-        m_windowTwo = (wxWindow *) NULL;
+        m_windowTwo = NULL;

     }
     else
     {
         wxFAIL_MSG(wxT("splitter: attempt to remove a non-existent window"));
 
     }
     else
     {
         wxFAIL_MSG(wxT("splitter: attempt to remove a non-existent window"));
 

-        return FALSE;
+        return false;

     }
 
     OnUnsplit(win);
     DoSetSashPosition(0);
     SizeWindows();
 
     }
 
     OnUnsplit(win);
     DoSetSashPosition(0);
     SizeWindows();
 

-    return TRUE;
+    return true;

 }
 
 // Replace a window with another one
 bool wxSplitterWindow::ReplaceWindow(wxWindow *winOld, wxWindow *winNew)
 {
 }
 
 // Replace a window with another one
 bool wxSplitterWindow::ReplaceWindow(wxWindow *winOld, wxWindow *winNew)
 {

-    wxCHECK_MSG( winOld, FALSE, wxT("use one of Split() functions instead") );
-    wxCHECK_MSG( winNew, FALSE, wxT("use Unsplit() functions instead") );
+    wxCHECK_MSG( winOld, false, wxT("use one of Split() functions instead") );
+    wxCHECK_MSG( winNew, false, wxT("use Unsplit() functions instead") );

 
     if ( winOld == m_windowTwo )
     {
 
     if ( winOld == m_windowTwo )
     {


@@ -757,23 +845,28 @@ bool wxSplitterWindow::ReplaceWindow(wxWindow *winOld, wxWindow *winNew)
     {
         wxFAIL_MSG(wxT("splitter: attempt to replace a non-existent window"));
 
     {
         wxFAIL_MSG(wxT("splitter: attempt to replace a non-existent window"));
 

-        return FALSE;
+        return false;

     }
 
     SizeWindows();
 
     }
 
     SizeWindows();
 

-    return TRUE;
+    return true;

 }
 
 void wxSplitterWindow::SetMinimumPaneSize(int min)
 {
     m_minimumPaneSize = min;
 }
 
 void wxSplitterWindow::SetMinimumPaneSize(int min)
 {
     m_minimumPaneSize = min;

-    SetSashPosition(m_sashPosition); // re-check limits
+    int pos = m_requestedSashPosition != INT_MAX ? m_requestedSashPosition : m_sashPosition;
+    SetSashPosition(pos); // re-check limits

 }
 
 void wxSplitterWindow::SetSashPosition(int position, bool redraw)
 {
 }
 
 void wxSplitterWindow::SetSashPosition(int position, bool redraw)
 {

-    DoSetSashPosition(position);
+    // 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;
+
+    DoSetSashPosition(ConvertSashPosition(position));

 
     if ( redraw )
     {
 
     if ( redraw )
     {


@@ -781,11 +874,62 @@ void wxSplitterWindow::SetSashPosition(int position, bool redraw)
     }
 }
 
     }
 }
 

+// Make sure the child window sizes are updated. This is useful
+// for reducing flicker by updating the sizes before a
+// window is shown, if you know the overall size is correct.
+void wxSplitterWindow::UpdateSize()
+{
+    SizeWindows();
+}
+

 bool wxSplitterWindow::DoSendEvent(wxSplitterEvent& event)
 {
     return !GetEventHandler()->ProcessEvent(event) || event.IsAllowed();
 }
 
 bool wxSplitterWindow::DoSendEvent(wxSplitterEvent& event)
 {
     return !GetEventHandler()->ProcessEvent(event) || event.IsAllowed();
 }
 

+wxSize wxSplitterWindow::DoGetBestSize() const
+{
+    // get best sizes of subwindows
+    wxSize size1, size2;
+    if ( m_windowOne )
+        size1 = m_windowOne->GetEffectiveMinSize();
+    if ( m_windowTwo )
+        size2 = m_windowTwo->GetEffectiveMinSize();
+
+    // sum them
+    //
+    // pSash points to the size component to which sash size must be added
+    int *pSash;
+    wxSize sizeBest;
+    if ( m_splitMode == wxSPLIT_VERTICAL )
+    {
+        sizeBest.y = wxMax(size1.y, size2.y);
+        sizeBest.x = wxMax(size1.x, m_minimumPaneSize) +
+                        wxMax(size2.x, m_minimumPaneSize);
+
+        pSash = &sizeBest.x;
+    }
+    else // wxSPLIT_HORIZONTAL
+    {
+        sizeBest.x = wxMax(size1.x, size2.x);
+        sizeBest.y = wxMax(size1.y, m_minimumPaneSize) +
+                        wxMax(size2.y, m_minimumPaneSize);
+
+        pSash = &sizeBest.y;
+    }
+
+    // account for the sash if the window is actually split
+    if ( m_windowOne && m_windowTwo )
+        *pSash += GetSashSize();
+
+    // account for the border too
+    int border = 2*GetBorderSize();
+    sizeBest.x += border;
+    sizeBest.y += border;
+
+    return sizeBest;
+}
+

 // ---------------------------------------------------------------------------
 // wxSplitterWindow virtual functions: they now just generate the events
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // wxSplitterWindow virtual functions: they now just generate the events
 // ---------------------------------------------------------------------------


@@ -793,7 +937,7 @@ bool wxSplitterWindow::DoSendEvent(wxSplitterEvent& event)
 bool wxSplitterWindow::OnSashPositionChange(int WXUNUSED(newSashPosition))
 {
     // always allow by default
 bool wxSplitterWindow::OnSashPositionChange(int WXUNUSED(newSashPosition))
 {
     // always allow by default

-    return TRUE;
+    return true;

 }
 
 int wxSplitterWindow::OnSashPositionChanging(int newSashPosition)
 }
 
 int wxSplitterWindow::OnSashPositionChanging(int newSashPosition)


@@ -811,7 +955,7 @@ int wxSplitterWindow::OnSashPositionChanging(int newSashPosition)
     // Obtain relevant window dimension for bottom / right threshold check
     int window_size = GetWindowSize();
 
     // Obtain relevant window dimension for bottom / right threshold check
     int window_size = GetWindowSize();
 

-    bool unsplit_scenario = FALSE;
+    bool unsplit_scenario = false;

     if ( m_permitUnsplitAlways || m_minimumPaneSize == 0 )
     {
         // Do edge detection if unsplit premitted
     if ( m_permitUnsplitAlways || m_minimumPaneSize == 0 )
     {
         // Do edge detection if unsplit premitted


@@ -819,13 +963,13 @@ int wxSplitterWindow::OnSashPositionChanging(int newSashPosition)
         {
             // threshold top / left check
             newSashPosition = 0;
         {
             // threshold top / left check
             newSashPosition = 0;

-            unsplit_scenario = TRUE;
+            unsplit_scenario = true;

         }
         if ( newSashPosition >= window_size - UNSPLIT_THRESHOLD )
         {
             // threshold bottom/right check
             newSashPosition = window_size;
         }
         if ( newSashPosition >= window_size - UNSPLIT_THRESHOLD )
         {
             // threshold bottom/right check
             newSashPosition = window_size;

-            unsplit_scenario = TRUE;
+            unsplit_scenario = true;

         }
     }
 
         }
     }
 


@@ -833,12 +977,12 @@ int wxSplitterWindow::OnSashPositionChanging(int newSashPosition)
     {
         // If resultant pane would be too small, enlarge it
         newSashPosition = AdjustSashPosition(newSashPosition);
     {
         // If resultant pane would be too small, enlarge it
         newSashPosition = AdjustSashPosition(newSashPosition);

-    }

 
 

-    // If the result is out of bounds it means minimum size is too big,
-    // so split window in half as best compromise.
-    if ( newSashPosition < 0 || newSashPosition > window_size )
-        newSashPosition = window_size / 2;
+        // If the result is out of bounds it means minimum size is too big,
+        // so split window in half as best compromise.
+        if ( newSashPosition < 0 || newSashPosition > window_size )
+            newSashPosition = window_size / 2;
+    }

 
     // now let the event handler have it
     //
 
     // now let the event handler have it
     //


@@ -890,7 +1034,7 @@ void wxSplitterWindow::OnDoubleClickSash(int x, int y)
 void wxSplitterWindow::OnUnsplit(wxWindow *winRemoved)
 {
     // call this before calling the event handler which may delete the window
 void wxSplitterWindow::OnUnsplit(wxWindow *winRemoved)
 {
     // call this before calling the event handler which may delete the window

-    winRemoved->Show(FALSE);
+    winRemoved->Show(false);

 }
 
 #if defined( __WXMSW__ ) || defined( __WXMAC__)
 }
 
 #if defined( __WXMSW__ ) || defined( __WXMAC__)