i#87757: do not create empty Rectangle bounding box for glyphs:

Enforce a minimum width and height of 1 in GlyphMetric::SetSize(),
preventing X11SalGraphics::GetGlyphBoundRect() from returning a
Rectangle that has one side set as RECT_EMPTY.

This problem has surfaced due to the change of the status bar in
ce14342c, causing the
AccessibleStatusBarItem to fail in getCharacterBounds() because
the text of the control, "Words: 0", now contains a space, for which an
empty Rectangle bounding box is created, which results in a wrong
return value from getCharacterBounds():

LOG> Character bounds outside component
LOG> Character rect: 43, -566, 0, 0
LOG> Component rect: 91, 2, 71, 18

It turns out that the following test was disabled due to this problem,
so re-enable it now:
toolkit.AccessibleFixedText::com::sun::star::accessibility::XAccessibleText

toolkit/qa/unoapi/knownissues.xcl

@@ -150,10 +150,6 @@ toolkit.UnoControlNumericField::com::sun::star::awt::XView
 toolkit.UnoControlCheckBox::com::sun::star::awt::XView
 toolkit.UnoScrollBarControl::com::sun::star::awt::XView
 
-
-### i87757 ###
-toolkit.AccessibleFixedText::com::sun::star::accessibility::XAccessibleText
-
 ### i37643 ###
 toolkit.AccessibleStatusBarItem::com::sun::star::accessibility::XAccessibleEventBroadcaster
 

vcl/generic/glyphs/gcach_layout.cxx

@@ -43,6 +43,11 @@
 
 namespace { struct SimpleLayoutEngine : public rtl::Static< ServerFontLayoutEngine, SimpleLayoutEngine > {}; }
 
+void GlyphMetric::SetSize(const Size& s)
+{
+    maSize = Size(std::max<long>(1, s.Width()), std::max<long>(1, s.Height()));
+}
+
 // =======================================================================
 // layout implementation for ServerFont
 // =======================================================================

vcl/inc/generic/glyphcache.hxx

@@ -132,7 +132,7 @@ protected:
     friend class GlyphData;
     void                    SetOffset( int nX, int nY ) { maOffset = Point( nX, nY); }
     void                    SetDelta( int nX, int nY )  { maDelta = Point( nX, nY); }
-    void                    SetSize( const Size& s )    { maSize = s; }
+    void                    SetSize(const Size& s);
     void                    SetCharWidth( long nW )     { mnAdvanceWidth = nW; }
 
 private: