From cd303522106f5ce836d426697f8ce3334d955d60 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <marco@gnome.org>
Date: Fri, 31 Dec 2004 17:10:25 +0000
Subject: Add a changed event that is emitted when the page content changes. This is

2004-12-31  Marco Pesenti Gritti  <marco@gnome.org>

        * backend/ev-document.c: (ev_document_base_init),
        (ev_document_changed):
        * backend/ev-document.h:

        Add a changed event that is emitted when the page content
        changes. This is necessary to deal with the fact that
        in ps backend rendering happen asycrounously.
        This makes the ps backend mostly work.

        * pdf/xpdf/pdf-document.cc:

        Emit changed event

        * ps/gtkgs.c: (set_up_page), (gtk_gs_widget_event),
        (ps_document_set_target):

        Emit changed event

        * shell/ev-view.c: (document_changed_callback),
        (ev_view_set_document), (ev_view_set_page):

        Redraw on the changed signal
---
(limited to 'ps')

diff --git a/ps/gtkgs.c b/ps/gtkgs.c
index ebb29f2..74d6195 100644
--- a/ps/gtkgs.c
+++ b/ps/gtkgs.c
@@ -498,6 +498,7 @@ set_up_page(GtkGS * gs)
   //GdkColormap *colormap;
   GdkGC *fill;
   GdkColor white = { 0, 0xFFFF, 0xFFFF, 0xFFFF };   /* pixel, r, g, b */
+  GdkColormap *colormap;
 
 #ifdef HAVE_LOCALE_H
   char *savelocale;
@@ -518,6 +519,8 @@ set_up_page(GtkGS * gs)
     /* clear new pixmap (set to white) */
     fill = gdk_gc_new(gs->pstarget);
     if(fill) {
+      colormap = gdk_drawable_get_colormap(gs->pstarget);
+      gdk_color_alloc (colormap, &white);
       gdk_gc_set_foreground(fill, &white);
 
       if(gs->width > 0 && gs->height > 0) {
@@ -2089,13 +2092,42 @@ ps_document_get_page (EvDocument  *document)
 	return gtk_gs_get_current_page (GTK_GS (document));
 }
 
+static gboolean
+gtk_gs_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data)
+{
+	GtkGS *gs = (GtkGS *) data;
+
+	if(event->type != GDK_CLIENT_EVENT)
+		return FALSE;
+
+	if (event->client.message_type == gs_class->page_atom) {
+		gs->busy = FALSE;
+		ev_document_changed (EV_DOCUMENT (gs));
+	}
+
+	return TRUE;
+}
+
 static void
 ps_document_set_target (EvDocument  *document,
-			 GdkDrawable *target)
+			GdkDrawable *target)
 {
 	GtkGS *gs = GTK_GS (document);
+	GtkWidget *widget;
+	gpointer data;
 
 	gs->pstarget = target;
+
+	if (gs->pstarget) {
+		gdk_window_get_user_data (gs->pstarget, &data);
+		g_return_if_fail (GTK_IS_WIDGET (data));
+
+		widget = GTK_WIDGET (data);
+		g_signal_connect (widget, "event",
+				  G_CALLBACK (gtk_gs_widget_event),
+				  document);
+	}
+
 	gtk_gs_goto_page (gs, gs->current_page);
 }
 
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