[gnumeric] SheetControlGUI: Fix minor sizing issue.

[Morten Welinder <mortenw src gnome org>]

commit 85ba6111f4f0b1f49723b910e92bfb214e0108da
Author: Morten Welinder <terra gnome org>
Date:   Fri Feb 28 11:38:54 2014 -0500

    SheetControlGUI: Fix minor sizing issue.

 ChangeLog               |    3 +++
 src/sheet-control-gui.c |   21 ++++++++++++---------
 2 files changed, 15 insertions(+), 9 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 1286a0f..573ec1a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2014-02-28  Morten Welinder  <terra gnome org>
 
+       * src/sheet-control-gui.c (resize_pane_pos): If row/column canvas
+       is not visible, ignore them.
+
        * src/ssdiff.c (diff_sheets_attrs): Detect more sheet attribute
        changes.
 
diff --git a/src/sheet-control-gui.c b/src/sheet-control-gui.c
index 892f3b4..09f74ea 100644
--- a/src/sheet-control-gui.c
+++ b/src/sheet-control-gui.c
@@ -1247,17 +1247,19 @@ resize_pane_pos (SheetControlGUI *scg, GtkPaned *p,
                 int *colrow_result, gint64 *guide_pos)
 {
        ColRowInfo const *cri;
-       GnmPane const  *pane = scg_pane (scg, 0);
-       gboolean const    vert = (p == scg->hpane);
+       GnmPane const *pane = scg_pane (scg, 0);
+       gboolean const vert = (p == scg->hpane);
        int colrow, handle;
        gint64 pos = gtk_paned_get_position (p);
 
        gtk_widget_style_get (GTK_WIDGET (p), "handle-size", &handle, NULL);
        pos += handle / 2;
        if (vert) {
-               GtkAllocation ca;
-               gtk_widget_get_allocation (GTK_WIDGET (scg->pane[0]->row.canvas), &ca);
-               pos -= ca.width;
+               if (gtk_widget_get_visible (GTK_WIDGET (pane->row.canvas))) {
+                       GtkAllocation ca;
+                       gtk_widget_get_allocation (GTK_WIDGET (pane->row.canvas), &ca);
+                       pos -= ca.width;
+               }
                if (scg->pane[1]) {
                        GtkAllocation pa;
                        gtk_widget_get_allocation (GTK_WIDGET (scg->pane[1]),
@@ -1271,10 +1273,11 @@ resize_pane_pos (SheetControlGUI *scg, GtkPaned *p,
                pos += pane->first_offset.x;
                colrow = gnm_pane_find_col (pane, pos, guide_pos);
        } else {
-               GtkAllocation ca;
-               gtk_widget_get_allocation (GTK_WIDGET (scg->pane[0]->col.canvas), &ca);
-
-               pos -= ca.height;
+               if (gtk_widget_get_visible (GTK_WIDGET (pane->col.canvas))) {
+                       GtkAllocation ca;
+                       gtk_widget_get_allocation (GTK_WIDGET (pane->col.canvas), &ca);
+                       pos -= ca.height;
+               }
                if (scg->pane[3]) {
                        GtkAllocation pa;
                        gtk_widget_get_allocation (GTK_WIDGET (scg->pane[3]),