[shotwell] Allow CCW rotation by ctrl-Space on tool button

[Jens Georg <jensgeorg src gnome org>]

commit 764d257bd4e532b858c4338b6c52e69125505856
Author: Jens Georg <mail jensge org>
Date:   Wed Mar 8 22:01:06 2017 +0100

    Allow CCW rotation by ctrl-Space on tool button
    
    Signed-off-by: Jens Georg <mail jensge org>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=715501

 src/CollectionPage.vala |    6 ++++++
 src/PhotoPage.vala      |    3 +++
 2 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/CollectionPage.vala b/src/CollectionPage.vala
index df39f64..3434b13 100644
--- a/src/CollectionPage.vala
+++ b/src/CollectionPage.vala
@@ -63,6 +63,12 @@ public abstract class CollectionPage : MediaPage {
             MediaPage.ZoomSliderAssembly zoom_slider_assembly = create_zoom_slider_assembly();
             connect_slider(zoom_slider_assembly);
             get_toolbar().insert(zoom_slider_assembly, -1);
+
+            Gtk.ToolButton? rotate_button = this.builder.get_object ("ToolRotate") as Gtk.ToolButton;
+            unowned Gtk.BindingSet binding_set = Gtk.BindingSet.by_class(rotate_button.get_class());
+            Gtk.BindingEntry.add_signal(binding_set, Gdk.Key.KP_Space, Gdk.ModifierType.CONTROL_MASK, 
"clicked", 0);
+            Gtk.BindingEntry.add_signal(binding_set, Gdk.Key.space, Gdk.ModifierType.CONTROL_MASK, 
"clicked", 0);
+
         }
         
         return toolbar;
diff --git a/src/PhotoPage.vala b/src/PhotoPage.vala
index 5c182a8..9bed855 100644
--- a/src/PhotoPage.vala
+++ b/src/PhotoPage.vala
@@ -440,6 +440,9 @@ public abstract class EditingHostPage : SinglePhotoPage {
         rotate_button.clicked.connect(on_rotate_clockwise);
         rotate_button.is_important = true;
         toolbar.insert(rotate_button, -1);
+        unowned Gtk.BindingSet binding_set = Gtk.BindingSet.by_class(rotate_button.get_class());
+        Gtk.BindingEntry.add_signal(binding_set, Gdk.Key.KP_Space, Gdk.ModifierType.CONTROL_MASK, "clicked", 
0);
+        Gtk.BindingEntry.add_signal(binding_set, Gdk.Key.space, Gdk.ModifierType.CONTROL_MASK, "clicked", 0);
         
         // crop tool
         crop_button = new Gtk.ToggleToolButton ();