If the horizontal adjustment changes because of a change in the layout

2005-05-18  Anders Carlsson  <andersca@imendio.com>

	* gtk/gtktextview.c: (gtk_text_view_flush_scroll),
	(gtk_text_view_update_adjustments), (gtk_text_view_value_changed):
	* gtk/gtktextview.h:
	If the horizontal adjustment changes because of a change in the
	layout width, then do a complete redraw. This is because there
	might be right-aligned or centered text that needs to be redrawn.

2 files changed, 17 insertions, 4 deletions

diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 668dd4e12f..d207cf6810 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -1728,7 +1728,7 @@ gtk_text_view_flush_scroll (GtkTextView *text_view)
                                          scroll->use_align,
                                          scroll->xalign,
                                          scroll->yalign);
-  
+
   free_pending_scroll (scroll);
 
   return retval;
@@ -1776,6 +1776,9 @@ gtk_text_view_update_adjustments (GtkTextView *text_view)
 
   if (text_view->width != width || text_view->height != height)
     {
+      if (text_view->width != width)
+	text_view->width_changed = TRUE;
+
       text_view->width = width;
       text_view->height = height;
 
@@ -6489,6 +6492,17 @@ gtk_text_view_value_changed (GtkAdjustment *adj,
     {
       dx = text_view->xoffset - (gint)adj->value;
       text_view->xoffset = adj->value;
+
+      /* If the change is due to a size change we need 
+       * to invalidate the entire text window because there might be
+       * right-aligned or centered text 
+       */
+      if (text_view->width_changed)
+	{
+	  gdk_window_invalidate_rect (text_view->text_window->bin_window, NULL, FALSE);
+	  
+	  text_view->width_changed = FALSE;
+	}
     }
   else if (adj == text_view->vadjustment)
     {
diff --git a/gtk/gtktextview.h b/gtk/gtktextview.h
index ff3a67c800..9062935330 100644
--- a/gtk/gtktextview.h
+++ b/gtk/gtktextview.h
@@ -93,8 +93,7 @@ struct _GtkTextView
 
   guint accepts_tab : 1;
   
-  /* this flag is no longer used */
-  guint reserved : 1;
+  guint width_changed : 1;
   
   /* debug flag - means that we've validated onscreen since the
    * last "invalidate" signal from the layout
@@ -102,7 +101,7 @@ struct _GtkTextView
   guint onscreen_validated : 1;
 
   guint mouse_cursor_obscured : 1;
-  
+
   GtkTextWindow *text_window;
   GtkTextWindow *left_window;
   GtkTextWindow *right_window;