[gimp] Bug 694665 - SWM should distribute remaining space to main frame

[Michael Natterer <mitch src gnome org>]

commit 9da0f489e151d36043bd4fe0ab4404dac47adb0b
Author: Michael Natterer <mitch gimp org>
Date:   Wed Feb 27 23:46:00 2013 +0100

    Bug 694665 - SWM should distribute remaining space to main frame
    
    Save the "right-docks-position" as negative value in pixels from the
    right window border. Change the image window restoring code to
    interpret negative values like that, but keep the meaning of positive
    values for compatibility with existing sessionrc files.

 app/display/gimpimagewindow.c |   16 +++++++++++++---
 1 files changed, 13 insertions(+), 3 deletions(-)
---
diff --git a/app/display/gimpimagewindow.c b/app/display/gimpimagewindow.c
index 6aadc84..35f736a 100644
--- a/app/display/gimpimagewindow.c
+++ b/app/display/gimpimagewindow.c
@@ -814,6 +814,7 @@ gimp_image_window_get_aux_info (GimpSessionManaged *session_managed)
   if (config->single_window_mode)
     {
       GimpSessionInfoAux *aux;
+      GtkAllocation       allocation;
       gchar               widthbuf[128];
 
       g_snprintf (widthbuf, sizeof (widthbuf), "%d",
@@ -821,8 +822,14 @@ gimp_image_window_get_aux_info (GimpSessionManaged *session_managed)
       aux = gimp_session_info_aux_new (GIMP_IMAGE_WINDOW_LEFT_DOCKS_WIDTH, widthbuf);
       aux_info = g_list_append (aux_info, aux);
 
+      gtk_widget_get_allocation (private->right_hpane, &allocation);
+
+      /* a negative number will be interpreted as the width of the second
+       * child of the pane
+       */
       g_snprintf (widthbuf, sizeof (widthbuf), "%d",
-                  gtk_paned_get_position (GTK_PANED (private->right_hpane)));
+                  gtk_paned_get_position (GTK_PANED (private->right_hpane)) -
+                  allocation.width);
       aux = gimp_session_info_aux_new (GIMP_IMAGE_WINDOW_RIGHT_DOCKS_POS, widthbuf);
       aux_info = g_list_append (aux_info, aux);
 
@@ -844,7 +851,10 @@ gimp_image_window_set_right_hpane_position (GtkPaned      *paned,
 
   g_return_if_fail (GTK_IS_PANED (paned));
 
-  gtk_paned_set_position (paned, position);
+  if (position > 0)
+    gtk_paned_set_position (paned, position);
+  else
+    gtk_paned_set_position (paned, position + allocation->width);
 
   g_signal_handlers_disconnect_by_func (paned,
                                         gimp_image_window_set_right_hpane_position,
@@ -898,7 +908,7 @@ gimp_image_window_set_aux_info (GimpSessionManaged *session_managed,
   if (right_docks_pos > 0 &&
       gtk_paned_get_position (GTK_PANED (private->right_hpane)) != right_docks_pos)
     {
-      if (wait_with_right_docks)
+      if (wait_with_right_docks || right_docks_pos < 0)
         {
           /* We must wait on a size allocation before we can set the
            * position