]> git.saurik.com Git - wxWidgets.git/blobdiff - src/aui/framemanager.cpp
using native key handling, closes #10406
[wxWidgets.git] / src / aui / framemanager.cpp
index 4c7d3831c3cf7d954413a4a00f607e82fdd7bc60..940ecfdad41ec2dab8806687ab1783e586c493ee 100644 (file)
@@ -30,6 +30,7 @@
 #include "wx/aui/floatpane.h"
 #include "wx/aui/tabmdi.h"
 #include "wx/aui/auibar.h"
+#include "wx/mdi.h"
 
 #ifndef WX_PRECOMP
     #include "wx/panel.h"
@@ -38,8 +39,8 @@
     #include "wx/dcclient.h"
     #include "wx/dcscreen.h"
     #include "wx/toolbar.h"
-    #include "wx/mdi.h"
     #include "wx/image.h"
+    #include "wx/statusbr.h"
 #endif
 
 WX_CHECK_BUILD_OPTIONS("wxAUI")
@@ -54,12 +55,12 @@ WX_DEFINE_OBJARRAY(wxAuiPaneInfoArray)
 
 wxAuiPaneInfo wxAuiNullPaneInfo;
 wxAuiDockInfo wxAuiNullDockInfo;
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_BUTTON)
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_CLOSE)
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_MAXIMIZE)
-DEFINE_EVENT_TYPE(wxEVT_AUI_PANE_RESTORE)
-DEFINE_EVENT_TYPE(wxEVT_AUI_RENDER)
-DEFINE_EVENT_TYPE(wxEVT_AUI_FIND_MANAGER)
+wxDEFINE_EVENT( wxEVT_AUI_PANE_BUTTON, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_PANE_CLOSE, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_PANE_MAXIMIZE, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_PANE_RESTORE, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_RENDER, wxAuiManagerEvent );
+wxDEFINE_EVENT( wxEVT_AUI_FIND_MANAGER, wxAuiManagerEvent );
 
 #ifdef __WXMAC__
     // a few defines to avoid nameclashes
@@ -558,6 +559,136 @@ static int PaneSortFunc(wxAuiPaneInfo** p1, wxAuiPaneInfo** p2)
 }
 
 
+
+
+// this utility class implements a proportional sizer
+// as it existed in wxWidgets 2.8 and before.
+
+class wxAuiProportionalBoxSizer : public wxBoxSizer
+{
+public:
+    wxAuiProportionalBoxSizer(int orientation) : wxBoxSizer(orientation) { }
+
+    void RecalcSizes()
+    {
+        if (m_children.GetCount() == 0)
+            return;
+
+        int fixed_height = 0;
+        int fixed_width = 0;
+        int stretchable = 0;
+        wxSizerItemList::compatibility_iterator node;
+
+        // find fixed width and height, as well
+        // as the total stretchable proportions
+        node = m_children.GetFirst();
+        while (node)
+        {
+            wxSizerItem *item = node->GetData();
+
+            if (item->IsShown())
+            {
+                stretchable += item->GetProportion();
+
+                wxSize size(item->GetMinSizeWithBorder());
+                if (item->GetProportion() == 0)
+                {
+                    if (m_orient == wxVERTICAL)
+                    {
+                        fixed_height += size.y;
+                        fixed_width = wxMax(fixed_width, size.x);
+                    }
+                     else
+                    {
+                        fixed_width += size.x;
+                        fixed_height = wxMax(fixed_height, size.y);
+                    }
+                }
+            }
+
+            node = node->GetNext();
+        }
+
+
+        // delta specifies the total amount to be allocated to stretch spaces
+        int delta = 0;
+        if (stretchable)
+        {
+            if (m_orient == wxHORIZONTAL)
+                delta = m_size.x - fixed_width;
+                 else
+                delta = m_size.y - fixed_height;
+        }
+
+        // go through each item and assign sizes
+        wxPoint pt(m_position);
+        node = m_children.GetFirst();
+        while (node)
+        {
+            wxSizerItem* item = node->GetData();
+
+            if (item->IsShown())
+            {
+                wxSize size(item->GetMinSizeWithBorder());
+
+                if (m_orient == wxVERTICAL)
+                {
+                    wxCoord height = size.y;
+                    if (item->GetProportion())
+                    {
+                        height = (delta * item->GetProportion()) / stretchable;
+                        delta -= height;
+                        stretchable -= item->GetProportion();
+                    }
+
+                    wxPoint child_pos(pt);
+                    wxSize child_size(size.x, height);
+
+                    if (item->GetFlag() & (wxEXPAND | wxSHAPED))
+                        child_size.x = m_size.x;
+                    else if (item->GetFlag() & wxALIGN_RIGHT)
+                        child_pos.x += m_size.x - size.x;
+                    else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL))
+                        child_pos.x += (m_size.x - size.x) / 2;
+
+                    item->SetDimension(child_pos, child_size);
+
+                    pt.y += height;
+                }
+                 else
+                {
+                    wxCoord width = size.x;
+                    if (item->GetProportion())
+                    {
+                        width = (delta * item->GetProportion()) / stretchable;
+                        delta -= width;
+                        stretchable -= item->GetProportion();
+                    }
+
+                    wxPoint child_pos(pt);
+                    wxSize child_size(width, size.y);
+
+                    if (item->GetFlag() & (wxEXPAND | wxSHAPED))
+                        child_size.y = m_size.y;
+                    else if (item->GetFlag() & wxALIGN_BOTTOM)
+                        child_pos.y += m_size.y - size.y;
+                    else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL))
+                        child_pos.y += (m_size.y - size.y) / 2;
+
+                    item->SetDimension(child_pos, child_size);
+
+                    pt.x += width;
+                }
+            }
+
+            node = node->GetNext();
+        }
+    }
+};
+
+
+
+
 // -- wxAuiManager class implementation --
 
 
@@ -582,6 +713,7 @@ END_EVENT_TABLE()
 wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
 {
     m_action = actionNone;
+    m_action_window = NULL;
     m_last_mouse_move = wxPoint();
     m_hover_button = NULL;
     m_art = new wxAuiDefaultDockArt;
@@ -593,6 +725,7 @@ wxAuiManager::wxAuiManager(wxWindow* managed_wnd, unsigned int flags)
     m_dock_constraint_x = 0.3;
     m_dock_constraint_y = 0.3;
     m_reserved = NULL;
+    m_currentDragItem = -1;
 
     if (managed_wnd)
     {
@@ -735,6 +868,18 @@ unsigned int wxAuiManager::GetFlags() const
     return m_flags;
 }
 
+// Convenience function
+bool wxAuiManager_HasLiveResize(wxAuiManager& manager)
+{
+    // With Core Graphics on Mac, it's not possible to show sash feedback,
+    // so we'll always use live update instead.
+#if defined(__WXMAC__)
+    wxUnusedVar(manager);
+    return true;
+#else
+    return (manager.GetFlags() & wxAUI_MGR_LIVE_RESIZE) == wxAUI_MGR_LIVE_RESIZE;
+#endif
+}
 
 // don't use these anymore as they are deprecated
 // use Set/GetManagedFrame() instead
@@ -759,7 +904,7 @@ wxAuiManager* wxAuiManager::GetManager(wxWindow* window)
     wxAuiManagerEvent evt(wxEVT_AUI_FIND_MANAGER);
     evt.SetManager(NULL);
     evt.ResumePropagation(wxEVENT_PROPAGATE_MAX);
-    if (!window->ProcessEvent(evt))
+    if (!window->GetEventHandler()->ProcessEvent(evt))
         return NULL;
 
     return evt.GetManager();
@@ -778,7 +923,7 @@ void wxAuiManager::UpdateHintWindowConfig()
         {
             wxFrame* f = static_cast<wxFrame*>(w);
             can_do_transparent = f->CanSetTransparent();
-            
+
             break;
         }
 
@@ -920,7 +1065,7 @@ void wxAuiManager::ProcessMgrEvent(wxAuiManagerEvent& event)
     // first, give the owner frame a chance to override
     if (m_frame)
     {
-        if (m_frame->ProcessEvent(event))
+        if (m_frame->GetEventHandler()->ProcessEvent(event))
             return;
     }
 
@@ -945,7 +1090,7 @@ void wxAuiManager::SetArtProvider(wxAuiDockArt* art_provider)
 bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
 {
     wxASSERT_MSG(window, wxT("NULL window ptrs are not allowed"));
-    
+
     // check if the pane has a valid window
     if (!window)
         return false;
@@ -1013,7 +1158,7 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
         button.button_id = wxAUI_BUTTON_CLOSE;
         pinfo.buttons.Add(button);
     }
-    
+
     if (pinfo.HasGripper())
     {
         if (pinfo.window->IsKindOf(CLASSINFO(wxAuiToolBar)))
@@ -1022,34 +1167,28 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
             // have a gripper control.  The toolbar's built-in gripper
             // meshes better with the look and feel of the control than ours,
             // so turn wxAuiManager's gripper off, and the toolbar's on.
-            
+
             wxAuiToolBar* tb = static_cast<wxAuiToolBar*>(pinfo.window);
             pinfo.SetFlag(wxAuiPaneInfo::optionGripper, false);
             tb->SetGripperVisible(true);
         }
     }
-    
+
 
     if (pinfo.best_size == wxDefaultSize &&
         pinfo.window)
     {
         pinfo.best_size = pinfo.window->GetClientSize();
 
+#if wxUSE_TOOLBAR
         if (pinfo.window->IsKindOf(CLASSINFO(wxToolBar)))
         {
             // GetClientSize() doesn't get the best size for
             // a toolbar under some newer versions of wxWidgets,
             // so use GetBestSize()
             pinfo.best_size = pinfo.window->GetBestSize();
-
-            // for some reason, wxToolBar::GetBestSize() is returning
-            // a size that is a pixel shy of the correct amount.
-            // I believe this to be the correct action, until
-            // wxToolBar::GetBestSize() is fixed.  Is this assumption
-            // correct?
-            // commented out by JACS 2007-9-08 after having added a pixel in wxMSW's wxToolBar::DoGetBestSize()
-            // pinfo.best_size.y++;
         }
+#endif // wxUSE_TOOLBAR
 
         if (pinfo.min_size != wxDefaultSize)
         {
@@ -1061,7 +1200,7 @@ bool wxAuiManager::AddPane(wxWindow* window, const wxAuiPaneInfo& pane_info)
     }
 
 
-    
+
     return true;
 }
 
@@ -1268,7 +1407,7 @@ void wxAuiManager::MaximizePane(wxAuiPaneInfo& pane_info)
     for (i = 0, pane_count = m_panes.GetCount(); i < pane_count; ++i)
     {
         wxAuiPaneInfo& p = m_panes.Item(i);
-        if (!p.IsToolbar())
+        if (!p.IsToolbar() && !p.IsFloating())
         {
             p.Restore();
 
@@ -1699,8 +1838,8 @@ void wxAuiManager::LayoutAddPane(wxSizer* cont,
     // value that the pane will receive
     int pane_proportion = pane.dock_proportion;
 
-    wxBoxSizer* horz_pane_sizer = new wxBoxSizer(wxHORIZONTAL);
-    wxBoxSizer* vert_pane_sizer = new wxBoxSizer(wxVERTICAL);
+    wxAuiProportionalBoxSizer* horz_pane_sizer = new wxAuiProportionalBoxSizer(wxHORIZONTAL);
+    wxAuiProportionalBoxSizer* vert_pane_sizer = new wxAuiProportionalBoxSizer(wxVERTICAL);
 
     if (pane.HasGripper())
     {
@@ -1722,7 +1861,7 @@ void wxAuiManager::LayoutAddPane(wxSizer* cont,
     if (pane.HasCaption())
     {
         // create the caption sizer
-        wxBoxSizer* caption_sizer = new wxBoxSizer(wxHORIZONTAL);
+        wxAuiProportionalBoxSizer* caption_sizer = new wxAuiProportionalBoxSizer(wxHORIZONTAL);
 
         sizer_item = caption_sizer->Add(1, caption_size, 1, wxEXPAND);
 
@@ -1871,7 +2010,7 @@ void wxAuiManager::LayoutAddDock(wxSizer* cont,
     }
 
     // create the sizer for the dock
-    wxSizer* dock_sizer = new wxBoxSizer(orientation);
+    wxSizer* dock_sizer = new wxAuiProportionalBoxSizer(orientation);
 
     // add each pane to the dock
     bool has_maximized_pane = false;
@@ -2004,7 +2143,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
                                  wxAuiDockUIPartArray& uiparts,
                                  bool spacer_only)
 {
-    wxBoxSizer* container = new wxBoxSizer(wxVERTICAL);
+    wxAuiProportionalBoxSizer* container = new wxAuiProportionalBoxSizer(wxVERTICAL);
 
     int pane_border_size = m_art->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE);
     int caption_size = m_art->GetMetric(wxAUI_DOCKART_CAPTION_SIZE);
@@ -2287,7 +2426,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
 
         // create a container which will hold this layer's
         // docks (top, bottom, left, right)
-        cont = new wxBoxSizer(wxVERTICAL);
+        cont = new wxAuiProportionalBoxSizer(wxVERTICAL);
 
 
         // find any top docks in this layer
@@ -2302,7 +2441,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
         // fill out the middle layer (which consists
         // of left docks, content area and right docks)
 
-        middle = new wxBoxSizer(wxHORIZONTAL);
+        middle = new wxAuiProportionalBoxSizer(wxHORIZONTAL);
 
         // find any left docks in this layer
         FindDocks(docks, wxAUI_DOCK_LEFT, layer, -1, arr);
@@ -2354,7 +2493,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
             cont->Add(middle, 1, wxEXPAND);
              else
             delete middle;
-            
+
 
 
         // find any bottom docks in this layer
@@ -2371,7 +2510,7 @@ wxSizer* wxAuiManager::LayoutAll(wxAuiPaneInfoArray& panes,
     {
         // no sizer available, because there are no docks,
         // therefore we will create a simple background area
-        cont = new wxBoxSizer(wxVERTICAL);
+        cont = new wxAuiProportionalBoxSizer(wxVERTICAL);
         wxSizerItem* sizer_item = cont->Add(1,1, 1, wxEXPAND);
         wxAuiDockUIPart part;
         part.type = wxAuiDockUIPart::typeBackground;
@@ -2882,7 +3021,8 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
         // toolbars may only be moved in and to fixed-pane docks,
         // otherwise we will try to float the pane.  Also, the pane
         // should float if being dragged over center pane windows
-        if (!part->dock->fixed || part->dock->dock_direction == wxAUI_DOCK_CENTER)
+        if (!part->dock->fixed || part->dock->dock_direction == wxAUI_DOCK_CENTER ||
+            pt.x >= cli_size.x || pt.x <= 0 || pt.y >= cli_size.y || pt.y <= 0)
         {
             if (m_last_rect.IsEmpty() || m_last_rect.Contains(pt.x, pt.y ))
             {
@@ -2890,13 +3030,9 @@ bool wxAuiManager::DoDrop(wxAuiDockInfoArray& docks,
             }
             else
             {
-                if ((m_flags & wxAUI_MGR_ALLOW_FLOATING) &&
-                   (drop.IsFloatable() ||
-                    (part->dock->dock_direction != wxAUI_DOCK_CENTER &&
-                     part->dock->dock_direction != wxAUI_DOCK_NONE)))
+                if ((m_flags & wxAUI_MGR_ALLOW_FLOATING) && drop.IsFloatable())
                 {
-                    if (drop.IsFloatable())
-                        drop.Float();
+                    drop.Float();
                 }
 
                 m_skipping = false;
@@ -3463,6 +3599,9 @@ void wxAuiManager::OnFloatingPaneMoving(wxWindow* wnd, wxDirection dir)
     wxAuiPaneInfo& pane = GetPane(wnd);
     wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
+    if(!pane.frame)
+        return;
+
     wxPoint pt = ::wxGetMousePosition();
 
 #if 0
@@ -3563,6 +3702,9 @@ void wxAuiManager::OnFloatingPaneMoved(wxWindow* wnd, wxDirection dir)
     wxAuiPaneInfo& pane = GetPane(wnd);
     wxASSERT_MSG(pane.IsOk(), wxT("Pane window not found"));
 
+    if(!pane.frame)
+        return;
+
     wxPoint pt = ::wxGetMousePosition();
 
 #if 0
@@ -3930,6 +4072,8 @@ void wxAuiManager::UpdateButtonOnScreen(wxAuiDockUIPart* button_ui_part,
 
 void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 {
+    m_currentDragItem = -1;
+
     wxAuiDockUIPart* part = HitTest(event.GetX(), event.GetY());
     if (part)
     {
@@ -4025,202 +4169,296 @@ void wxAuiManager::OnLeftDown(wxMouseEvent& event)
 #endif
 }
 
-
-void wxAuiManager::OnLeftUp(wxMouseEvent& event)
+/// Ends a resize action, or for live update, resizes the sash
+bool wxAuiManager::DoEndResizeAction(wxMouseEvent& event)
 {
-    if (m_action == actionResize)
+    // resize the dock or the pane
+    if (m_action_part && m_action_part->type==wxAuiDockUIPart::typeDockSizer)
     {
-        m_frame->ReleaseMouse();
+        // first, we must calculate the maximum size the dock may be
+        int sash_size = m_art->GetMetric(wxAUI_DOCKART_SASH_SIZE);
+
+        int used_width = 0, used_height = 0;
 
-        // get rid of the hint rectangle
-        wxScreenDC dc;
-        DrawResizeHint(dc, m_action_hintrect);
+        wxSize client_size = m_frame->GetClientSize();
 
-        // resize the dock or the pane
-        if (m_action_part && m_action_part->type==wxAuiDockUIPart::typeDockSizer)
+        size_t dock_i, dock_count = m_docks.GetCount();
+        for (dock_i = 0; dock_i < dock_count; ++dock_i)
         {
-            wxRect& rect = m_action_part->dock->rect;
+            wxAuiDockInfo& dock = m_docks.Item(dock_i);
+            if (dock.dock_direction == wxAUI_DOCK_TOP ||
+                dock.dock_direction == wxAUI_DOCK_BOTTOM)
+            {
+                used_height += dock.size;
+            }
+            if (dock.dock_direction == wxAUI_DOCK_LEFT ||
+                dock.dock_direction == wxAUI_DOCK_RIGHT)
+            {
+                used_width += dock.size;
+            }
+            if (dock.resizable)
+                used_width += sash_size;
+        }
+
 
-            wxPoint new_pos(event.m_x - m_action_offset.x,
-                            event.m_y - m_action_offset.y);
+        int available_width = client_size.GetWidth() - used_width;
+        int available_height = client_size.GetHeight() - used_height;
 
-            switch (m_action_part->dock->dock_direction)
+
+#if wxUSE_STATUSBAR
+        // if there's a status control, the available
+        // height decreases accordingly
+        if (m_frame && m_frame->IsKindOf(CLASSINFO(wxFrame)))
+        {
+            wxFrame* frame = static_cast<wxFrame*>(m_frame);
+            wxStatusBar* status = frame->GetStatusBar();
+            if (status)
             {
-                case wxAUI_DOCK_LEFT:
-                    m_action_part->dock->size = new_pos.x - rect.x;
-                    break;
-                case wxAUI_DOCK_TOP:
-                    m_action_part->dock->size = new_pos.y - rect.y;
-                    break;
-                case wxAUI_DOCK_RIGHT:
-                    m_action_part->dock->size = rect.x + rect.width -
-                                  new_pos.x - m_action_part->rect.GetWidth();
-                    break;
-                case wxAUI_DOCK_BOTTOM:
-                    m_action_part->dock->size = rect.y + rect.height -
-                                  new_pos.y - m_action_part->rect.GetHeight();
-                    break;
+                wxSize status_client_size = status->GetClientSize();
+                available_height -= status_client_size.GetHeight();
             }
-
-            Update();
-            Repaint(NULL);
         }
-        else if (m_action_part &&
-                 m_action_part->type == wxAuiDockUIPart::typePaneSizer)
+#endif
+
+        wxRect& rect = m_action_part->dock->rect;
+
+        wxPoint new_pos(event.m_x - m_action_offset.x,
+            event.m_y - m_action_offset.y);
+        int new_size, old_size = m_action_part->dock->size;
+
+        switch (m_action_part->dock->dock_direction)
         {
-            wxAuiDockInfo& dock = *m_action_part->dock;
-            wxAuiPaneInfo& pane = *m_action_part->pane;
+        case wxAUI_DOCK_LEFT:
+            new_size = new_pos.x - rect.x;
+            if (new_size-old_size > available_width)
+                new_size = old_size+available_width;
+            m_action_part->dock->size = new_size;
+            break;
+        case wxAUI_DOCK_TOP:
+            new_size = new_pos.y - rect.y;
+            if (new_size-old_size > available_height)
+                new_size = old_size+available_height;
+            m_action_part->dock->size = new_size;
+            break;
+        case wxAUI_DOCK_RIGHT:
+            new_size = rect.x + rect.width - new_pos.x -
+                       m_action_part->rect.GetWidth();
+            if (new_size-old_size > available_width)
+                new_size = old_size+available_width;
+            m_action_part->dock->size = new_size;
+            break;
+        case wxAUI_DOCK_BOTTOM:
+            new_size = rect.y + rect.height -
+                new_pos.y - m_action_part->rect.GetHeight();
+            if (new_size-old_size > available_height)
+                new_size = old_size+available_height;
+            m_action_part->dock->size = new_size;
+            break;
+        }
 
-            int total_proportion = 0;
-            int dock_pixels = 0;
-            int new_pixsize = 0;
+        Update();
+        Repaint(NULL);
+    }
+    else if (m_action_part &&
+        m_action_part->type == wxAuiDockUIPart::typePaneSizer)
+    {
+        wxAuiDockInfo& dock = *m_action_part->dock;
+        wxAuiPaneInfo& pane = *m_action_part->pane;
 
-            int caption_size = m_art->GetMetric(wxAUI_DOCKART_CAPTION_SIZE);
-            int pane_border_size = m_art->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE);
-            int sash_size = m_art->GetMetric(wxAUI_DOCKART_SASH_SIZE);
+        int total_proportion = 0;
+        int dock_pixels = 0;
+        int new_pixsize = 0;
 
-            wxPoint new_pos(event.m_x - m_action_offset.x,
-                            event.m_y - m_action_offset.y);
+        int caption_size = m_art->GetMetric(wxAUI_DOCKART_CAPTION_SIZE);
+        int pane_border_size = m_art->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE);
+        int sash_size = m_art->GetMetric(wxAUI_DOCKART_SASH_SIZE);
 
-            // determine the pane rectangle by getting the pane part
-            wxAuiDockUIPart* pane_part = GetPanePart(pane.window);
-            wxASSERT_MSG(pane_part,
-                       wxT("Pane border part not found -- shouldn't happen"));
+        wxPoint new_pos(event.m_x - m_action_offset.x,
+            event.m_y - m_action_offset.y);
 
-            // determine the new pixel size that the user wants;
-            // this will help us recalculate the pane's proportion
-            if (dock.IsHorizontal())
-                new_pixsize = new_pos.x - pane_part->rect.x;
-            else
-                new_pixsize = new_pos.y - pane_part->rect.y;
+        // determine the pane rectangle by getting the pane part
+        wxAuiDockUIPart* pane_part = GetPanePart(pane.window);
+        wxASSERT_MSG(pane_part,
+            wxT("Pane border part not found -- shouldn't happen"));
 
-            // determine the size of the dock, based on orientation
-            if (dock.IsHorizontal())
-                dock_pixels = dock.rect.GetWidth();
-            else
-                dock_pixels = dock.rect.GetHeight();
+        // determine the new pixel size that the user wants;
+        // this will help us recalculate the pane's proportion
+        if (dock.IsHorizontal())
+            new_pixsize = new_pos.x - pane_part->rect.x;
+        else
+            new_pixsize = new_pos.y - pane_part->rect.y;
 
-            // determine the total proportion of all resizable panes,
-            // and the total size of the dock minus the size of all
-            // the fixed panes
-            int i, dock_pane_count = dock.panes.GetCount();
-            int pane_position = -1;
-            for (i = 0; i < dock_pane_count; ++i)
+        // determine the size of the dock, based on orientation
+        if (dock.IsHorizontal())
+            dock_pixels = dock.rect.GetWidth();
+        else
+            dock_pixels = dock.rect.GetHeight();
+
+        // determine the total proportion of all resizable panes,
+        // and the total size of the dock minus the size of all
+        // the fixed panes
+        int i, dock_pane_count = dock.panes.GetCount();
+        int pane_position = -1;
+        for (i = 0; i < dock_pane_count; ++i)
+        {
+            wxAuiPaneInfo& p = *dock.panes.Item(i);
+            if (p.window == pane.window)
+                pane_position = i;
+
+            // while we're at it, subtract the pane sash
+            // width from the dock width, because this would
+            // skew our proportion calculations
+            if (i > 0)
+                dock_pixels -= sash_size;
+
+            // also, the whole size (including decorations) of
+            // all fixed panes must also be subtracted, because they
+            // are not part of the proportion calculation
+            if (p.IsFixed())
             {
-                wxAuiPaneInfo& p = *dock.panes.Item(i);
-                if (p.window == pane.window)
-                    pane_position = i;
-
-                // while we're at it, subtract the pane sash
-                // width from the dock width, because this would
-                // skew our proportion calculations
-                if (i > 0)
-                    dock_pixels -= sash_size;
-
-                // also, the whole size (including decorations) of
-                // all fixed panes must also be subtracted, because they
-                // are not part of the proportion calculation
-                if (p.IsFixed())
-                {
-                    if (dock.IsHorizontal())
-                        dock_pixels -= p.best_size.x;
-                    else
-                        dock_pixels -= p.best_size.y;
-                }
+                if (dock.IsHorizontal())
+                    dock_pixels -= p.best_size.x;
                 else
-                {
-                    total_proportion += p.dock_proportion;
-                }
+                    dock_pixels -= p.best_size.y;
             }
-
-            // find a pane in our dock to 'steal' space from or to 'give'
-            // space to -- this is essentially what is done when a pane is
-            // resized; the pane should usually be the first non-fixed pane
-            // to the right of the action pane
-            int borrow_pane = -1;
-            for (i = pane_position+1; i < dock_pane_count; ++i)
+            else
             {
-                wxAuiPaneInfo& p = *dock.panes.Item(i);
-                if (!p.IsFixed())
-                {
-                    borrow_pane = i;
-                    break;
-                }
+                total_proportion += p.dock_proportion;
             }
+        }
 
+        // new size can never be more than the number of dock pixels
+        if (new_pixsize > dock_pixels)
+            new_pixsize = dock_pixels;
 
-            // demand that the pane being resized is found in this dock
-            // (this assert really never should be raised)
-            wxASSERT_MSG(pane_position != -1, wxT("Pane not found in dock"));
 
-            // prevent division by zero
-            if (dock_pixels == 0 || total_proportion == 0 || borrow_pane == -1)
+        // find a pane in our dock to 'steal' space from or to 'give'
+        // space to -- this is essentially what is done when a pane is
+        // resized; the pane should usually be the first non-fixed pane
+        // to the right of the action pane
+        int borrow_pane = -1;
+        for (i = pane_position+1; i < dock_pane_count; ++i)
+        {
+            wxAuiPaneInfo& p = *dock.panes.Item(i);
+            if (!p.IsFixed())
             {
-                m_action = actionNone;
-                return;
+                borrow_pane = i;
+                break;
             }
+        }
 
-            // calculate the new proportion of the pane
-            int new_proportion = (new_pixsize*total_proportion)/dock_pixels;
 
-            // default minimum size
-            int min_size = 0;
+        // demand that the pane being resized is found in this dock
+        // (this assert really never should be raised)
+        wxASSERT_MSG(pane_position != -1, wxT("Pane not found in dock"));
 
-            // check against the pane's minimum size, if specified. please note
-            // that this is not enough to ensure that the minimum size will
-            // not be violated, because the whole frame might later be shrunk,
-            // causing the size of the pane to violate it's minimum size
-            if (pane.min_size.IsFullySpecified())
-            {
-                min_size = 0;
+        // prevent division by zero
+        if (dock_pixels == 0 || total_proportion == 0 || borrow_pane == -1)
+        {
+            m_action = actionNone;
+            return false;
+        }
 
-                if (pane.HasBorder())
-                    min_size += (pane_border_size*2);
+        // calculate the new proportion of the pane
+        int new_proportion = (new_pixsize*total_proportion)/dock_pixels;
 
-                // calculate minimum size with decorations (border,caption)
-                if (pane_part->orientation == wxVERTICAL)
-                {
-                    min_size += pane.min_size.y;
-                    if (pane.HasCaption())
-                        min_size += caption_size;
-                }
-                else
-                {
-                    min_size += pane.min_size.x;
-                }
+        // default minimum size
+        int min_size = 0;
+
+        // check against the pane's minimum size, if specified. please note
+        // that this is not enough to ensure that the minimum size will
+        // not be violated, because the whole frame might later be shrunk,
+        // causing the size of the pane to violate it's minimum size
+        if (pane.min_size.IsFullySpecified())
+        {
+            min_size = 0;
+
+            if (pane.HasBorder())
+                min_size += (pane_border_size*2);
+
+            // calculate minimum size with decorations (border,caption)
+            if (pane_part->orientation == wxVERTICAL)
+            {
+                min_size += pane.min_size.y;
+                if (pane.HasCaption())
+                    min_size += caption_size;
             }
+            else
+            {
+                min_size += pane.min_size.x;
+            }
+        }
 
 
-            // for some reason, an arithmatic error somewhere is causing
-            // the proportion calculations to always be off by 1 pixel;
-            // for now we will add the 1 pixel on, but we really should
-            // determine what's causing this.
-            min_size++;
+        // for some reason, an arithmatic error somewhere is causing
+        // the proportion calculations to always be off by 1 pixel;
+        // for now we will add the 1 pixel on, but we really should
+        // determine what's causing this.
+        min_size++;
 
-            int min_proportion = (min_size*total_proportion)/dock_pixels;
+        int min_proportion = (min_size*total_proportion)/dock_pixels;
 
-            if (new_proportion < min_proportion)
-                new_proportion = min_proportion;
+        if (new_proportion < min_proportion)
+            new_proportion = min_proportion;
 
 
 
-            int prop_diff = new_proportion - pane.dock_proportion;
+        int prop_diff = new_proportion - pane.dock_proportion;
 
-            // borrow the space from our neighbor pane to the
-            // right or bottom (depending on orientation)
-            dock.panes.Item(borrow_pane)->dock_proportion -= prop_diff;
-            pane.dock_proportion = new_proportion;
+        // borrow the space from our neighbor pane to the
+        // right or bottom (depending on orientation);
+        // also make sure we don't make the neighbor too small
+        int prop_borrow = dock.panes.Item(borrow_pane)->dock_proportion;
 
-            // repaint
-            Update();
-            Repaint(NULL);
+        if (prop_borrow - prop_diff < 0)
+        {
+            // borrowing from other pane would make it too small,
+            // so cancel the resize operation
+            prop_borrow = min_proportion;
+        }
+         else
+        {
+            prop_borrow -= prop_diff;
         }
+
+
+        dock.panes.Item(borrow_pane)->dock_proportion = prop_borrow;
+        pane.dock_proportion = new_proportion;
+
+
+        // repaint
+        Update();
+        Repaint(NULL);
+    }
+
+    return true;
+}
+
+void wxAuiManager::OnLeftUp(wxMouseEvent& event)
+{
+    if (m_action == actionResize)
+    {
+        m_frame->ReleaseMouse();
+
+        if (!wxAuiManager_HasLiveResize(*this))
+        {
+            // get rid of the hint rectangle
+            wxScreenDC dc;
+            DrawResizeHint(dc, m_action_hintrect);
+        }
+        if (m_currentDragItem != -1 && wxAuiManager_HasLiveResize(*this))
+            m_action_part = & (m_uiparts.Item(m_currentDragItem));
+
+        DoEndResizeAction(event);
+
+        m_currentDragItem = -1;
+
     }
     else if (m_action == actionClickButton)
     {
         m_hover_button = NULL;
         m_frame->ReleaseMouse();
-        
+
         if (m_action_part)
         {
             UpdateButtonOnScreen(m_action_part, event);
@@ -4297,6 +4535,13 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
 
     if (m_action == actionResize)
     {
+        // It's necessary to reset m_action_part since it destroyed
+        // by the Update within DoEndResizeAction.
+        if (m_currentDragItem != -1)
+            m_action_part = & (m_uiparts.Item(m_currentDragItem));
+        else
+            m_currentDragItem = m_uiparts.Index(* m_action_part);
+
         if (m_action_part)
         {
             wxPoint pos = m_action_part->rect.GetPosition();
@@ -4305,14 +4550,33 @@ void wxAuiManager::OnMotion(wxMouseEvent& event)
             else
                 pos.x = wxMax(0, event.m_x - m_action_offset.x);
 
-            wxRect rect(m_frame->ClientToScreen(pos),
-                        m_action_part->rect.GetSize());
+            if (wxAuiManager_HasLiveResize(*this))
+            {
+                m_frame->ReleaseMouse();
+                DoEndResizeAction(event);
+                m_frame->CaptureMouse();
+            }
+            else
+            {
+                wxRect rect(m_frame->ClientToScreen(pos),
+                    m_action_part->rect.GetSize());
+                wxScreenDC dc;
 
-            wxScreenDC dc;
-            if (!m_action_hintrect.IsEmpty())
-                DrawResizeHint(dc, m_action_hintrect);
-            DrawResizeHint(dc, rect);
-            m_action_hintrect = rect;
+                if (!m_action_hintrect.IsEmpty())
+                {
+                    // remove old resize hint
+                    DrawResizeHint(dc, m_action_hintrect);
+                    m_action_hintrect = wxRect();
+                }
+
+                // draw new resize hint, if it's inside the managed frame
+                wxRect frame_screen_rect = m_frame->GetScreenRect();
+                if (frame_screen_rect.Contains(rect))
+                {
+                    DrawResizeHint(dc, rect);
+                    m_action_hintrect = rect;
+                }
+            }
         }
     }
     else if (m_action == actionClickCaption)