Use common save function for backends.

[evince.git] / shell / ev-view.c

diff --git a/shell/ev-view.c b/shell/ev-view.c
index d35d4fc461dcf057ca4395ee9b98f3331b474f66..311504b147e4116a9e6b844ad92bfbbe709d11d6 100644 (file)
--- a/shell/ev-view.c
+++ b/shell/ev-view.c
@@ -420,6 +420,8 @@ view_set_adjustment_values (EvView         *view,
 static void
 view_update_range_and_current_page (EvView *view)
 {
+       gint current_page;
+       
        if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
                return;
 
@@ -430,7 +432,6 @@ view_update_range_and_current_page (EvView *view)
        } else if (view->continuous) {
                GdkRectangle current_area, unused, page_area;
                GtkBorder border;
-               gint current_page;
                gboolean found = FALSE;
                int i;
 
@@ -458,28 +459,33 @@ view_update_range_and_current_page (EvView *view)
                        }
                }
 
-               current_page = ev_page_cache_get_current_page (view->page_cache);
-
-               if (current_page < view->start_page || current_page > view->end_page) {
-                       view->current_page = view->start_page;
-                       ev_page_cache_set_current_page (view->page_cache, view->start_page);
-               }
        } else {
                if (view->dual_page) {
-                       if (view->current_page % 2 == 0) {
+                       if (view->current_page % 2 == DUAL_EVEN_LEFT) {
                                view->start_page = view->current_page;
                                if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
                                        view->end_page = view->start_page + 1;
                                else 
                                        view->end_page = view->start_page;
                        } else {
-                               view->start_page = view->current_page - 1;
+                               if (view->current_page - 1 < 0)
+                                       view->start_page = view->current_page;
+                               else
+                                       view->start_page = view->current_page - 1;
                                view->end_page = view->current_page;
                        }
                } else {
                        view->start_page = view->current_page;
                        view->end_page = view->current_page;
                }
+
+       }
+
+       current_page = ev_page_cache_get_current_page (view->page_cache);
+
+       if (current_page < view->start_page || current_page > view->end_page) {
+               view->current_page = view->start_page;
+               ev_page_cache_set_current_page (view->page_cache, view->start_page);
        }
 
        ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
@@ -717,7 +723,7 @@ get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
        if (view->dual_page) {
                ev_page_cache_get_height_to_page (view->page_cache, page,
                                                  view->rotation, zoom, NULL, &offset);
-               offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom);
+               offset += ((page + DUAL_EVEN_LEFT) / 2 + 1) * view->spacing + ((page + DUAL_EVEN_LEFT) / 2 ) * (border.top + border.bottom);
        } else {
                ev_page_cache_get_height_to_page (view->page_cache, page,
                                                  view->rotation, zoom, &offset, NULL);
@@ -760,9 +766,9 @@ get_page_extents (EvView       *view,
                max_width = max_width + border->left + border->right;
                /* Get the location of the bounding box */
                if (view->dual_page) {
-                       x = view->spacing + (page % 2) * (max_width + view->spacing);
+                       x = view->spacing + ((page % 2 == DUAL_EVEN_LEFT) ? 0 : 1) * (max_width + view->spacing);
                        x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
-                       if (page % 2 == 0)
+                       if (page % 2 == DUAL_EVEN_LEFT)
                                x = x + (max_width - width - border->left - border->right);
                } else {
                        x = view->spacing;
@@ -782,10 +788,11 @@ get_page_extents (EvView       *view,
                        GtkBorder overall_border;
                        gint other_page;
 
-                       other_page = page ^ 1;
+                       other_page = (page % 2 == DUAL_EVEN_LEFT) ? page + 1: page - 1;
 
                        /* First, we get the bounding box of the two pages */
-                       if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
+                       if (other_page < ev_page_cache_get_n_pages (view->page_cache)
+                           && (0 <= other_page)) {
                                ev_page_cache_get_size (view->page_cache,
                                                        other_page,
                                                        view->rotation,
@@ -803,7 +810,7 @@ get_page_extents (EvView       *view,
                        y = view->spacing;
 
                        /* Adjust for being the left or right page */
-                       if (page % 2 == 0)
+                       if (page % 2 == DUAL_EVEN_LEFT)
                                x = x + max_width - width;
                        else
                                x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
@@ -3938,6 +3945,9 @@ ev_view_next_page (EvView *view)
        if (page < ev_page_cache_get_n_pages (view->page_cache)) {
                ev_page_cache_set_current_page (view->page_cache, page);
                return TRUE;
+       } else if (ev_view_get_dual_page (view) && page == ev_page_cache_get_n_pages (view->page_cache)) {
+               ev_page_cache_set_current_page (view->page_cache, page - 1);
+               return TRUE;
        } else {
                return FALSE;
        }
@@ -3956,36 +3966,14 @@ ev_view_previous_page (EvView *view)
        if (page >= 0) {
                ev_page_cache_set_current_page (view->page_cache, page);
                return TRUE;
-       } else {
+       } else if (ev_view_get_dual_page (view) && page == -1) {
+               ev_page_cache_set_current_page (view->page_cache, 0);
+               return TRUE;
+       } else {        
                return FALSE;
        }
 }
 
-gboolean
-ev_view_can_previous_page (EvView *view)
-{
-       int page;
-
-       g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
-
-       page = ev_page_cache_get_current_page (view->page_cache);
-       page = ev_view_get_dual_page (view) ? page - 2 : page - 1;
-       
-       return (page >=0);
-}
-
-gboolean ev_view_can_next_page (EvView *view)
-{
-       int page;
-
-       g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
-
-       page = ev_page_cache_get_current_page (view->page_cache);
-       page = ev_view_get_dual_page (view) ? page + 2 : page + 1;
-
-       return (page < ev_page_cache_get_n_pages (view->page_cache));
-}
-
 /*** Enum description for usage in signal ***/
 
 GType