added wxTLWBase::GetDefaultSize() to avoid creating windows with default size unsuitable for the current display size

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26615 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/toplevel.h

@@ -152,9 +152,10 @@ protected:
 
     // Get the default size for the new window if no explicit size given. If
     // there are better default sizes then these can be changed, just as long
-    // as they are not too small for TLWs.
+    // as they are not too small for TLWs (and not larger than screen).
-    static int WidthDefault(int w) { return w == -1 ? 400 : w; }
+    static wxSize GetDefaultSize();
-    static int HeightDefault(int h) { return h == -1 ? 250 : h; }
+    static int WidthDefault(int w) { return w == -1 ? GetDefaultSize().x : w; }
+    static int HeightDefault(int h) { return h == -1 ? GetDefaultSize().y : h; }
 
     // the frame icon
     wxIconBundle m_icons;

src/common/toplvcmn.cpp

@@ -125,6 +125,30 @@ wxSize wxTopLevelWindowBase::GetMaxSize() const
     return size;
 }
 
+/* static */
+wxSize wxTopLevelWindowBase::GetDefaultSize()
+{
+    wxSize size = wxGetClientDisplayRect().GetSize();
+
+    // create proportionally bigger windows on small screens
+    if ( size.x >= 1024 )
+        size.x = 400;
+    else if ( size.x >= 800 )
+        size.x = 300;
+    else if ( size.x >= 320 )
+        size.x = 240;
+
+    if ( size.y >= 768 )
+        size.y = 250;
+    else if ( size.y > 200 )
+    {
+        size.y *= 2;
+        size.y /= 3;
+    }
+
+    return size;
+}
+
 // ----------------------------------------------------------------------------
 // wxTopLevelWindow size management: we exclude the areas taken by
 // menu/status/toolbars from the client area, so the client area is what's