Create appearance streams for annotations.

Now handles more annotation types, and does not use the pdf-write device.
Handles many of the usual annotation properties, such as border width,
color, interior color, line ending styles.

	* Ink
	* Highlight, Underline, Strike-Out, Squiggly
	* Line (with arrow-heads)
	* Polygon
	* PolyLine
	* Square
	* Circle
	* Caret
	* Text (needs better icons)
	* FileAttachment (needs better icons)
	* Sound (needs better icons)
	* Stamp
	* FreeText

Partially complete:

	* Widget (treats everything like a plain text field)

Not done, but on the to-do list:

	* /BS style (solid/dashed/bevel/inset/underline)
	* /BS dash pattern

Not done and not on the list:

	* Movie
	* Screen
	* Printer's Mark
	* Trap Network
	* Watermark

	* /Border corner radii (ignored by acrobat)
	* /BE cloudy border effect

1 files changed, 12 insertions, 0 deletions

diff --git a/source/pdf/pdf-object.c b/source/pdf/pdf-object.c
index b00bf286..ec66376a 100644
--- a/source/pdf/pdf-object.c
+++ b/source/pdf/pdf-object.c
@@ -2122,6 +2122,18 @@ int pdf_obj_refs(fz_context *ctx, pdf_obj *obj)
 
 /* Convenience functions */
 
+pdf_obj *pdf_dict_get_inheritable(fz_context *ctx, pdf_obj *dict, pdf_obj *key)
+{
+	pdf_obj *val = NULL;
+	while (!val && dict)
+	{
+		val = pdf_dict_get(ctx, dict, key);
+		if (!val)
+			dict = pdf_dict_get(ctx, dict, PDF_NAME(Parent));
+	}
+	return val;
+}
+
 void pdf_dict_put_bool(fz_context *ctx, pdf_obj *dict, pdf_obj *key, int x)
 {
 	pdf_dict_put(ctx, dict, key, x ? PDF_TRUE : PDF_FALSE);