Add fz_update_page

Regenerate dirty appearance streams and report changed annotations since
last call.

Also include a partial revert of changes in 96f335bc, that turn out not
to be necessary.

fz_update_page must now be called between each document-changing event and
the next render. pdfapp.c and the android app have been updated to do so,
but do not yet take advantage of the possibility to render only the updated
areas of the screen.

1 files changed, 7 insertions, 14 deletions

diff --git a/pdf/mupdf-internal.h b/pdf/mupdf-internal.h
index 90e127f5..4c93009a 100644
--- a/pdf/mupdf-internal.h
+++ b/pdf/mupdf-internal.h
@@ -280,6 +280,7 @@ struct pdf_xobject_s
 	pdf_obj *resources;
 	pdf_obj *contents;
 	pdf_obj *me;
+	int iteration;
 };
 
 pdf_xobject *pdf_load_xobject(pdf_document *doc, pdf_obj *obj);
@@ -288,7 +289,7 @@ pdf_xobject *pdf_keep_xobject(fz_context *ctx, pdf_xobject *xobj);
 void pdf_drop_xobject(fz_context *ctx, pdf_xobject *xobj);
 void pdf_update_xobject_contents(pdf_document *xref, pdf_xobject *form, fz_buffer *buffer);
 
-int pdf_update_appearance(pdf_document *doc, pdf_obj *obj);
+void pdf_update_appearance(pdf_document *doc, pdf_obj *obj);
 
 /*
  * CMap
@@ -490,26 +491,16 @@ float pdf_text_stride(fz_context *ctx, pdf_font_desc *fontdesc, float fontsize,
  * Interactive features
  */
 
-/*
- * Flags as to the suitability of an annotation for the mouse states up and down
- * Both flags set mean suitable for both states.
- */
-enum
-{
-	MOUSE_DOWN_APPEARANCE = 1,
-	MOUSE_UP_APPEARANCE = 2,
-};
-
 struct pdf_annot_s
 {
 	pdf_obj *obj;
 	fz_rect rect;
 	fz_rect pagerect;
-	int mouse_states;
-	int has_states;
 	pdf_xobject *ap;
+	int ap_iteration;
 	fz_matrix matrix;
 	pdf_annot *next;
+	pdf_annot *next_changed;
 	int type;
 };
 
@@ -552,6 +543,7 @@ struct pdf_page_s
 	pdf_obj *contents;
 	fz_link *links;
 	pdf_annot *annots;
+	pdf_annot *changed_annots;
 	float duration;
 	int transition_present;
 	fz_transition transition;
@@ -575,7 +567,8 @@ void pdf_remove_item(fz_context *ctx, fz_store_free_fn *free, pdf_obj *key);
  */
 int pdf_has_unsaved_changes(pdf_document *doc);
 int pdf_pass_event(pdf_document *doc, pdf_page *page, fz_ui_event *ui_event);
-fz_rect *pdf_poll_screen_update(pdf_document *doc);
+void pdf_update_page(pdf_document *doc, pdf_page *page);
+pdf_annot *pdf_poll_changed_annot(pdf_document *idoc, pdf_page *page);
 fz_widget *pdf_focused_widget(pdf_document *doc);
 fz_widget *pdf_first_widget(pdf_document *doc, pdf_page *page);
 fz_widget *pdf_next_widget(fz_widget *previous);