made wxTextFile work in Unicode; also made it possible to use it with non seekable...

[wxWidgets.git] / src / common / toplvcmn.cpp

diff --git a/src/common/toplvcmn.cpp b/src/common/toplvcmn.cpp
index 83361facd64902d08ebcabef78d360d76a82ad9b..d99000e5e24428c455252cf89662b60bddfeca28 100644 (file)
--- a/src/common/toplvcmn.cpp
+++ b/src/common/toplvcmn.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        common/toplvcmn.cpp
+// Name:        src/common/toplvcmn.cpp

 // Purpose:     common (for all platforms) wxTopLevelWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Created:     01/02/97
 // Purpose:     common (for all platforms) wxTopLevelWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Created:     01/02/97


@@ -29,6 +29,8 @@
     #include "wx/app.h"
 #endif // WX_PRECOMP
 
     #include "wx/app.h"
 #endif // WX_PRECOMP
 

+#include "wx/display.h"
+

 // ----------------------------------------------------------------------------
 // event table
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // event table
 // ----------------------------------------------------------------------------


@@ -151,6 +153,78 @@ wxSize wxTopLevelWindowBase::GetDefaultSize()
     return size;
 }
 
     return size;
 }
 

+void wxTopLevelWindowBase::DoCentre(int dir)
+{
+    // we need the display rect anyhow so store it first
+    int nDisplay = wxDisplay::GetFromWindow(this);
+    wxDisplay dpy(nDisplay == wxNOT_FOUND ? 0 : nDisplay);
+    const wxRect rectDisplay(dpy.GetClientArea());
+
+    // what should we centre this window on?
+    wxRect rectParent;
+    if ( !(dir & wxCENTRE_ON_SCREEN) && GetParent() )
+    {
+        // centre on parent window: notice that we need screen coordinates for
+        // positioning this TLW
+        rectParent = GetParent()->GetScreenRect();
+
+        // if the parent is entirely off screen (happens at least with MDI
+        // parent frame under Mac but could happen elsewhere too if the frame
+        // was hidden/moved away for some reason), don't use it as otherwise
+        // this window wouldn't be visible at all
+        if ( !rectDisplay.Inside(rectParent.GetTopLeft()) &&
+                !rectParent.Inside(rectParent.GetBottomRight()) )
+        {
+            // this is enough to make IsEmpty() test below pass
+            rectParent.width = 0;
+        }
+    }
+
+    if ( rectParent.IsEmpty() )
+    {
+        // we were explicitely asked to centre this window on the entire screen
+        // or if we have no parent anyhow and so can't centre on it
+        rectParent = rectDisplay;
+    }
+
+    // centering maximized window on screen is no-op
+    if((rectParent == rectDisplay) && IsMaximized())
+        return;
+
+    // the new window rect candidate
+    wxRect rect = GetRect().CentreIn(rectParent, dir);
+
+    // we don't want to place the window off screen if Centre() is called as
+    // this is (almost?) never wanted and it would be very difficult to prevent
+    // it from happening from the user code if we didn't check for it here
+    if ( rectDisplay.Inside(rect.GetTopLeft()) )
+    {
+        if ( !rectDisplay.Inside(rect.GetBottomRight()) )
+        {
+            // check if we can move the window so that the bottom right corner
+            // is visible without hiding the top left one
+            int dx = rectDisplay.GetRight() - rect.GetRight();
+            int dy = rectDisplay.GetBottom() - rect.GetBottom();
+            rect.Offset(dx, dy);
+        }
+        //else: the window top left and bottom right corner are both visible,
+        //      although the window might still be not entirely on screen (with
+        //      2 staggered displays for example) we wouldn't be able to
+        //      improve the layout much in such case, so just leave it as is
+    }
+    else // make top left corner visible
+    {
+        if ( rect.x < rectDisplay.x )
+            rect.x = rectDisplay.x;
+
+        if ( rect.y < rectDisplay.y )
+            rect.y = rectDisplay.y;
+    }
+
+    // -1 could be valid coordinate here if there are several displays
+    SetSize(rect, wxSIZE_ALLOW_MINUS_ONE);
+}
+

 // ----------------------------------------------------------------------------
 // wxTopLevelWindow size management: we exclude the areas taken by
 // menu/status/toolbars from the client area, so the client area is what's
 // ----------------------------------------------------------------------------
 // wxTopLevelWindow size management: we exclude the areas taken by
 // menu/status/toolbars from the client area, so the client area is what's


@@ -257,9 +331,12 @@ bool wxTopLevelWindowBase::SendIconizeEvent(bool iconized)
 // do the window-specific processing after processing the update event
 void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 {
 // do the window-specific processing after processing the update event
 void wxTopLevelWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 {

-    if ( event.GetSetEnabled() )
-        Enable(event.GetEnabled());
+    // call inherited, but skip the wxControl's version, and call directly the
+    // wxWindow's one instead, because the only reason why we are overriding this
+    // function is that we want to use SetTitle() instead of wxControl::SetLabel()
+    wxWindowBase::DoUpdateWindowUI(event);

 
 

+    // update title

     if ( event.GetSetText() )
     {
         if ( event.GetText() != GetTitle() )
     if ( event.GetSetText() )
     {
         if ( event.GetText() != GetTitle() )


@@ -272,4 +349,3 @@ void wxTopLevelWindowBase::RequestUserAttention(int WXUNUSED(flags))
     // it's probably better than do nothing, isn't it?
     Raise();
 }
     // it's probably better than do nothing, isn't it?
     Raise();
 }

-