Bug 472629 – Add pango_renderer_get_layout(_line)

2007-10-24  Behdad Esfahbod  <behdad@gnome.org>

        Bug 472629 – Add pango_renderer_get_layout(_line)

        * pango/pango-renderer.h:
        * pango/pango-renderer.c: 
        New public API:

                pango_renderer_get_layout()
                pango_renderer_get_layout_line()

        * pango/pangocairo-render.c (pango_cairo_renderer_draw_shape),
        (release_renderer), (_pango_cairo_do_layout_line),
        (_pango_cairo_do_layout): Use above API to simplify
        shape_renderer implementation.

        * pango/pango.def:
        * docs/pango-sections.txt:
        * docs/tmpl/pango-renderer.sgml:
        Update.


svn path=/trunk/; revision=2460

1 files changed, 17 insertions, 12 deletions

diff --git a/pango/pangocairo-render.c b/pango/pangocairo-render.c
index b0ef136d..21792cb1 100644
--- a/pango/pangocairo-render.c
+++ b/pango/pangocairo-render.c
@@ -36,8 +36,6 @@ struct _PangoCairoRenderer
   cairo_t *cr;
   gboolean do_path;
   double x_offset, y_offset;
-  PangoCairoShapeRendererFunc shape_renderer;
-  gpointer                    shape_renderer_data;
 };
 
 struct _PangoCairoRendererClass
@@ -414,19 +412,32 @@ pango_cairo_renderer_draw_shape (PangoRenderer  *renderer,
 {
   PangoCairoRenderer *crenderer = (PangoCairoRenderer *) (renderer);
   cairo_t *cr = crenderer->cr;
-  double base_x = crenderer->x_offset + (double)x / PANGO_SCALE;
-  double base_y = crenderer->y_offset + (double)y / PANGO_SCALE;
+  PangoLayout *layout;
+  PangoCairoShapeRendererFunc shape_renderer;
+  gpointer                    shape_renderer_data;
+  double base_x, base_y;
+
+  layout = pango_renderer_get_layout (renderer);
+
+  if (!layout)
+  	return;
 
-  if (!crenderer->shape_renderer)
+  shape_renderer = pango_cairo_context_get_shape_renderer (pango_layout_get_context (layout),
+							   &shape_renderer_data);
+
+  if (!shape_renderer)
     return;
 
+  base_x = crenderer->x_offset + (double)x / PANGO_SCALE;
+  base_y = crenderer->y_offset + (double)y / PANGO_SCALE;
+
   cairo_save (cr);
   if (!crenderer->do_path)
     set_color (crenderer, PANGO_RENDER_PART_FOREGROUND);
 
   cairo_move_to (cr, base_x, base_y);
 
-  crenderer->shape_renderer (cr, attr, crenderer->do_path, crenderer->shape_renderer_data);
+  shape_renderer (cr, attr, crenderer->do_path, shape_renderer_data);
 
   cairo_restore (cr);
 }
@@ -479,8 +490,6 @@ release_renderer (PangoCairoRenderer *renderer, gboolean free_renderer)
     {
       renderer->cr = NULL;
       renderer->do_path = FALSE;
-      renderer->shape_renderer = NULL;
-      renderer->shape_renderer_data = NULL;
       renderer->x_offset = 0.;
       renderer->y_offset = 0.;
 
@@ -543,8 +552,6 @@ _pango_cairo_do_layout_line (cairo_t          *cr,
 
   crenderer->cr = cr;
   crenderer->do_path = do_path;
-  crenderer->shape_renderer = pango_cairo_context_get_shape_renderer (pango_layout_get_context (line->layout),
-								      &crenderer->shape_renderer_data);
   cairo_get_current_point (cr, &crenderer->x_offset, &crenderer->y_offset);
 
   pango_renderer_draw_layout_line (renderer, line, 0, 0);
@@ -563,8 +570,6 @@ _pango_cairo_do_layout (cairo_t     *cr,
 
   crenderer->cr = cr;
   crenderer->do_path = do_path;
-  crenderer->shape_renderer = pango_cairo_context_get_shape_renderer (pango_layout_get_context (layout),
-								      &crenderer->shape_renderer_data);
   cairo_get_current_point (cr, &crenderer->x_offset, &crenderer->y_offset);
 
   pango_renderer_draw_layout (renderer, layout, 0, 0);