1 files changed, 98 insertions, 0 deletions
diff --git a/src/util/ui.vala b/src/util/ui.vala
new file mode 100644
index 0000000..9f66de8
--- /dev/null
+++ b/src/util/ui.vala
@@ -0,0 +1,98 @@
+/* Copyright 2011-2014 Yorba Foundation
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later).  See the COPYING file in this distribution.
+ */
+
+public enum AdjustmentRelation {
+    BELOW,
+    IN_RANGE,
+    ABOVE
+}
+
+public enum CompassPoint {
+    NORTH,
+    SOUTH,
+    EAST,
+    WEST
+}
+
+public enum Direction {
+    FORWARD,
+    BACKWARD;
+    
+    public Spit.Transitions.Direction to_transition_direction() {
+        switch (this) {
+            case FORWARD:
+                return Spit.Transitions.Direction.FORWARD;
+            
+            case BACKWARD:
+                return Spit.Transitions.Direction.BACKWARD;
+            
+            default:
+                error("Unknown Direction %s", this.to_string());
+        }
+    }
+}
+
+public void spin_event_loop() {
+    while (Gtk.events_pending())
+        Gtk.main_iteration();
+}
+
+public AdjustmentRelation get_adjustment_relation(Gtk.Adjustment adjustment, int value) {
+    if (value < (int) adjustment.get_value())
+        return AdjustmentRelation.BELOW;
+    else if (value > (int) (adjustment.get_value() + adjustment.get_page_size()))
+        return AdjustmentRelation.ABOVE;
+    else
+        return AdjustmentRelation.IN_RANGE;
+}
+
+public Gdk.Rectangle get_adjustment_page(Gtk.Adjustment hadj, Gtk.Adjustment vadj) {
+    Gdk.Rectangle rect = Gdk.Rectangle();
+    rect.x = (int) hadj.get_value();
+    rect.y = (int) vadj.get_value();
+    rect.width = (int) hadj.get_page_size();
+    rect.height = (int) vadj.get_page_size();
+    
+    return rect;
+}
+
+// Verifies that only the mask bits are set in the modifier field, disregarding mouse and 
+// key modifers that are not normally of concern (i.e. Num Lock, Caps Lock, etc.).  Mask can be
+// one or more bits set, but should only consist of these values:
+// * Gdk.ModifierType.SHIFT_MASK
+// * Gdk.ModifierType.CONTROL_MASK
+// * Gdk.ModifierType.MOD1_MASK (Alt)
+// * Gdk.ModifierType.MOD3_MASK
+// * Gdk.ModifierType.MOD4_MASK
+// * Gdk.ModifierType.MOD5_MASK
+// * Gdk.ModifierType.SUPER_MASK
+// * Gdk.ModifierType.HYPER_MASK
+// * Gdk.ModifierType.META_MASK
+//
+// (Note: MOD2 seems to be Num Lock in GDK.)
+public bool has_only_key_modifier(Gdk.ModifierType field, Gdk.ModifierType mask) {
+    return (field 
+        & (Gdk.ModifierType.SHIFT_MASK 
+        | Gdk.ModifierType.CONTROL_MASK
+        | Gdk.ModifierType.MOD1_MASK
+        | Gdk.ModifierType.MOD3_MASK
+        | Gdk.ModifierType.MOD4_MASK
+        | Gdk.ModifierType.MOD5_MASK
+        | Gdk.ModifierType.SUPER_MASK
+        | Gdk.ModifierType.HYPER_MASK
+        | Gdk.ModifierType.META_MASK)) == mask;
+}
+
+public string build_dummy_ui_string(Gtk.ActionGroup[] groups) {
+    string ui_string = "<ui>";
+    foreach (Gtk.ActionGroup group in groups) {
+        foreach (Gtk.Action action in group.list_actions())
+            ui_string += "<accelerator name=\"%s\" action=\"%s\" />".printf(action.name, action.name);
+    }
+    ui_string += "</ui>";
+    
+    return ui_string;
+}