X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f029f1d15b04dd70522008cdf105be87140fabc6..bba35861478a26f5d8c756a9a7fa2bbd19a69cb1:/src/common/wincmn.cpp

diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 00c3b89341..5b3a22d1d8 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -369,6 +369,14 @@ wxWindowBase::~wxWindowBase()
 #if wxUSE_ACCESSIBILITY
     delete m_accessible;
 #endif
+
+#if wxUSE_HELP
+    // NB: this has to be called unconditionally, because we don't know
+    //     whether this window has associated help text or not
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+        helpProvider->RemoveHelp(this);
+#endif
 }
 
 void wxWindowBase::SendDestroyEvent()
@@ -920,6 +928,52 @@ bool wxWindowBase::IsTopLevel() const
     return false;
 }
 
+// ----------------------------------------------------------------------------
+// Freeze/Thaw
+// ----------------------------------------------------------------------------
+
+void wxWindowBase::Freeze()
+{
+    if ( !m_freezeCount++ )
+    {
+        // physically freeze this window:
+        DoFreeze();
+
+        // and recursively freeze all children:
+        for ( wxWindowList::iterator i = GetChildren().begin();
+              i != GetChildren().end(); ++i )
+        {
+            wxWindow *child = *i;
+            if ( child->IsTopLevel() )
+                continue;
+
+            child->Freeze();
+        }
+    }
+}
+
+void wxWindowBase::Thaw()
+{
+    wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
+
+    if ( !--m_freezeCount )
+    {
+        // recursively thaw all children:
+        for ( wxWindowList::iterator i = GetChildren().begin();
+              i != GetChildren().end(); ++i )
+        {
+            wxWindow *child = *i;
+            if ( child->IsTopLevel() )
+                continue;
+
+            child->Thaw();
+        }
+
+        // physically thaw this window:
+        DoThaw();
+    }
+}
+
 // ----------------------------------------------------------------------------
 // reparenting the window
 // ----------------------------------------------------------------------------
@@ -935,12 +989,22 @@ void wxWindowBase::AddChild(wxWindowBase *child)
 
     GetChildren().Append((wxWindow*)child);
     child->SetParent(this);
+
+    // adding a child while frozen will assert when thawn, so freeze it as if
+    // it had been already present when we were frozen
+    if ( IsFrozen() && !child->IsTopLevel() )
+        child->Freeze();
 }
 
 void wxWindowBase::RemoveChild(wxWindowBase *child)
 {
     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 
+    // removing a child while frozen may result in permanently frozen window
+    // if used e.g. from Reparent(), so thaw it
+    if ( IsFrozen() && !child->IsTopLevel() )
+        child->Thaw();
+
     GetChildren().DeleteObject((wxWindow *)child);
     child->SetParent(NULL);
 }
@@ -1631,6 +1695,7 @@ void wxWindowBase::SetHelpText(const wxString& text)
     }
 }
 
+#if WXWIN_COMPATIBILITY_2_8
 // associate this help text with all windows with the same id as this
 // one
 void wxWindowBase::SetHelpTextForId(const wxString& text)
@@ -1641,6 +1706,7 @@ void wxWindowBase::SetHelpTextForId(const wxString& text)
         helpProvider->AddHelp(GetId(), text);
     }
 }
+#endif // WXWIN_COMPATIBILITY_2_8
 
 // get the help string associated with this window (may be empty)
 // default implementation forwards calls to the help provider
@@ -1664,7 +1730,29 @@ void wxWindowBase::OnHelp(wxHelpEvent& event)
     wxHelpProvider *helpProvider = wxHelpProvider::Get();
     if ( helpProvider )
     {
-        if ( helpProvider->ShowHelpAtPoint(this, event.GetPosition(), event.GetOrigin()) )
+        wxPoint pos = event.GetPosition();
+        const wxHelpEvent::Origin origin = event.GetOrigin();
+        if ( origin == wxHelpEvent::Origin_Keyboard )
+        {
+            // if the help event was generated from keyboard it shouldn't
+            // appear at the mouse position (which is still the only position
+            // associated with help event) if the mouse is far away, although
+            // we still do use the mouse position if it's over the window
+            // because we suppose the user looks approximately at the mouse
+            // already and so it would be more convenient than showing tooltip
+            // at some arbitrary position which can be quite far from it
+            const wxRect rectClient = GetClientRect();
+            if ( !rectClient.Contains(ScreenToClient(pos)) )
+            {
+                // position help slightly under and to the right of this window
+                pos = ClientToScreen(wxPoint(
+                        2*GetCharWidth(),
+                        rectClient.height + GetCharHeight()
+                      ));
+            }
+        }
+
+        if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
         {
             // skip the event.Skip() below
             return;