If NULL is passed to _copy, return NULL with no warning. If NULL is passed

2006-02-06  Behdad Esfahbod  <behdad@gnome.org>

        * pango/pango-utils.c (pango_matrix_copy, pango_matrix_free):  If
        NULL is passed to _copy, return NULL with no warning.  If NULL is
        passed to _free, do nothing with no warning.  Docs updated.

        * examples/viewer-pangoxft.c (render_callback): Multiply x,y by
        PANGO_SCALE, as pango_xft_render_layout takes coordinates in
        Pango units weirdly enough.

        * viewer-pangocairo.c (render_callback): Do cairo_translate, to
        draw correct bounding boxes for x,y nonzero.

        * examples/renderdemo.c (do_output): If context has an all-zero matrix
        set, interpret it as backend does not support transformation, so
        warn on --rotate, and do not try to rotate.

        * examples/viewer-pangox.c (pangox_view_get_context): Set an all-zero
        matrix on context, to negotiate that we don't support transformations.

1 files changed, 10 insertions, 1 deletions

diff --git a/examples/viewer-pangox.c b/examples/viewer-pangox.c
index c4d499af..f3a88e67 100644
--- a/examples/viewer-pangox.c
+++ b/examples/viewer-pangox.c
@@ -39,8 +39,17 @@ static PangoContext *
 pangox_view_get_context (gpointer instance)
 {
   XViewer *x = (XViewer *) instance;
+  PangoContext *context;
+  PangoMatrix matrix = {0., 0., 0., 0., 0., 0.};
 
-  return pango_x_get_context (x->display);
+  context = pango_x_get_context (x->display);
+
+  /* We set an all-zero matrix on the context, to negotiate that
+   * this backend doesn't support transformations.
+   */
+  pango_context_set_matrix (context, &matrix);
+
+  return context;
 }
 
 typedef struct