X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/54e90b2a32c6aef1b21037e1797b93f8b3db0d10..c5bc21bd1fa3a8224fd49c4f9d7f673a571f0d9e:/src/univ/winuniv.cpp

diff --git a/src/univ/winuniv.cpp b/src/univ/winuniv.cpp
index 0044439b98..75f8f3bc74 100644
--- a/src/univ/winuniv.cpp
+++ b/src/univ/winuniv.cpp
@@ -60,6 +60,29 @@
 // implementation
 // ============================================================================
 
+// ----------------------------------------------------------------------------
+// scrollbars class
+// ----------------------------------------------------------------------------
+
+// This is scrollbar class used to implement wxWindow's "built-in" scrollbars;
+// unlike the standard wxScrollBar class, this one is positioned outside of its
+// parent's client area
+class wxWindowScrollBar : public wxScrollBar
+{
+public:
+    wxWindowScrollBar(wxWindow *parent,
+                      wxWindowID id,
+                      const wxPoint& pos = wxDefaultPosition,
+                      const wxSize& size = wxDefaultSize,
+                      long style = wxSB_HORIZONTAL)
+        : wxScrollBar(parent, id, pos, size, style)
+    {
+    }
+
+    virtual bool CanBeOutsideClientArea() const { return true; }
+};
+
+
 // ----------------------------------------------------------------------------
 // event tables
 // ----------------------------------------------------------------------------
@@ -128,11 +151,10 @@ bool wxWindow::Create(wxWindow *parent,
     // as under the other platforms
     actualStyle |= wxCLIP_CHILDREN;
 
-#ifdef __WXMSW__
-    // FIXME: may need this on other platforms
     actualStyle &= ~wxVSCROLL;
     actualStyle &= ~wxHSCROLL;
 
+#ifdef __WXMSW__
     // without this, borders (non-client areas in general) are not repainted
     // correctly when resizing; apparently, native NC areas are fully repainted
     // even without this style by MSW, but wxUniv implements client area
@@ -157,9 +179,9 @@ bool wxWindow::Create(wxWindow *parent,
         SetInsertIntoMain( true );
 #endif
 #if wxUSE_SCROLLBAR
-        m_scrollbarVert = new wxScrollBar(this, wxID_ANY,
-                                          wxDefaultPosition, wxDefaultSize,
-                                          wxSB_VERTICAL);
+        m_scrollbarVert = new wxWindowScrollBar(this, wxID_ANY,
+                                                wxDefaultPosition, wxDefaultSize,
+                                                wxSB_VERTICAL);
 #endif // wxUSE_SCROLLBAR
 #if wxUSE_TWO_WINDOWS
         SetInsertIntoMain( false );
@@ -173,9 +195,9 @@ bool wxWindow::Create(wxWindow *parent,
         SetInsertIntoMain( true );
 #endif
 #if wxUSE_SCROLLBAR
-        m_scrollbarHorz = new wxScrollBar(this, wxID_ANY,
-                                          wxDefaultPosition, wxDefaultSize,
-                                          wxSB_HORIZONTAL);
+        m_scrollbarHorz = new wxWindowScrollBar(this, wxID_ANY,
+                                                wxDefaultPosition, wxDefaultSize,
+                                                wxSB_HORIZONTAL);
 #endif // wxUSE_SCROLLBAR
 #if wxUSE_TWO_WINDOWS
         SetInsertIntoMain( false );
@@ -197,6 +219,14 @@ wxWindow::~wxWindow()
 {
     m_isBeingDeleted = true;
 
+#if wxUSE_SCROLLBAR
+    // clear pointers to scrollbar before deleting the children: they are
+    // children and so will be deleted by DestroyChildren() call below and if
+    // any code using the scrollbars would be called in the process or from
+    // ~wxWindowBase, the app would crash:
+    m_scrollbarVert = m_scrollbarHorz = NULL;
+#endif
+
     // we have to destroy our children before we're destroyed because our
     // children suppose that we're of type wxWindow, not just wxWindowNative,
     // and so bad things may happen if they're deleted from the base class dtor
@@ -896,10 +926,10 @@ void wxWindow::SetScrollbar(int orient,
 #if wxUSE_TWO_WINDOWS
             SetInsertIntoMain( true );
 #endif
-            scrollbar = new wxScrollBar(this, wxID_ANY,
-                                        wxDefaultPosition, wxDefaultSize,
-                                        orient & wxVERTICAL ? wxSB_VERTICAL
-                                                            : wxSB_HORIZONTAL);
+            scrollbar = new wxWindowScrollBar(this, wxID_ANY,
+                                              wxDefaultPosition, wxDefaultSize,
+                                              orient & wxVERTICAL ? wxSB_VERTICAL
+                                                                  : wxSB_HORIZONTAL);
 #if wxUSE_TWO_WINDOWS
             SetInsertIntoMain( false );
 #endif
@@ -1072,24 +1102,30 @@ void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
         //          and scrolling direction
         //       2. if scrolling in both axes, scroll all children
 
+        bool shouldMove = false;
+
         if ( rect && (dx * dy == 0 /* moving in only one of x, y axis */) )
         {
             wxRect childRect = child->GetRect();
             if ( dx == 0 && (childRect.GetLeft() <= rect->GetRight() ||
                              childRect.GetRight() >= rect->GetLeft()) )
             {
-                child->Move(child->GetPosition() + offset);
+                shouldMove = true;
             }
             else if ( dy == 0 && (childRect.GetTop() <= rect->GetBottom() ||
                                   childRect.GetBottom() >= rect->GetTop()) )
             {
-                child->Move(child->GetPosition() + offset);
+                shouldMove = true;
             }
+            // else: child outside of scrolling shaft, don't move
         }
-        else
+        else // scrolling in both axes or rect=NULL
         {
-            child->Move(child->GetPosition() + offset);
+            shouldMove = true;
         }
+
+        if ( shouldMove )
+            child->Move(child->GetPosition() + offset, wxSIZE_ALLOW_MINUS_ONE);
     }
 #endif // wxX11/!wxX11
 }
@@ -1304,6 +1340,7 @@ void wxWindow::OnKeyDown(wxKeyEvent& event)
             }
 #endif // wxUSE_MENUS
 
+#if wxUSE_BUTTON
             // if it wasn't in a menu, try to find a button
             if ( command != -1 )
             {
@@ -1319,6 +1356,7 @@ void wxWindow::OnKeyDown(wxKeyEvent& event)
                     }
                 }
             }
+#endif // wxUSE_BUTTON
 
             // don't propagate accels from the child frame to the parent one
             break;