Non-wxWindowDC-derived wxDC classes in wxGTK, such as wxGtkPrinterDCImpl, have
to fall back on the generic implementation of GetPartialTextExtents() as Pango
version can't be used with them.
This fixes a crash due to using NULL Pango layout when printing wxRichTextCtrl
in wxGTK.
Closes#14847.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73017 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add a new private wxTextMeasure class implementing methods for measuring text
and move the often duplicated (but not always identically) code for doing the
same from wxDC and wxWindow into it.
Currently this class is only really implemented in wxMSW and wxGTK.
Also extend the test for text measuring functions and rename it to
MeasuringTextTestCase from MeasuringContextTestCase as it's not wxGC-specific
any more.
Closes#14705.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72699 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
