[sugar] [PATCH 1/2] Add is_modifier and is_special_modifier functions to SugarKeyGrabber.

[Benjamin Berg]

---

 src/sugar/_sugarext.defs      |   19 +++++++++++++
 src/sugar/sugar-key-grabber.c |   59 +++++++++++++++++++++++++++++++++++++++++
 src/sugar/sugar-key-grabber.h |    6 ++++
 3 files changed, 84 insertions(+), 0 deletions(-)

diff --git a/src/sugar/_sugarext.defs b/src/sugar/_sugarext.defs
index 02b673c..6bc068f 100644
--- a/src/sugar/_sugarext.defs
+++ b/src/sugar/_sugarext.defs
@@ -121,6 +121,25 @@
   )
 )
 
+(define-method is_modifier
+  (of-object "SugarKeyGrabber")
+  (c-name "sugar_key_grabber_is_modifier")
+  (return-type "gboolean")
+  (parameters
+    '("guint" "keycode")
+  )
+)
+
+(define-method is_specific_modifier
+  (of-object "SugarKeyGrabber")
+  (c-name "sugar_key_grabber_is_specific_modifier")
+  (return-type "gboolean")
+  (parameters
+    '("guint" "keycode")
+    '("guint" "mask")
+  )
+)
+
 ;; From sexy-icon-entry.h
 
 (define-function sexy_icon_entry_get_type
diff --git a/src/sugar/sugar-key-grabber.c b/src/sugar/sugar-key-grabber.c
index baddab5..ed0cf9f 100644
--- a/src/sugar/sugar-key-grabber.c
+++ b/src/sugar/sugar-key-grabber.c
@@ -217,3 +217,62 @@ sugar_key_grabber_grab(SugarKeyGrabber *grabber, const 
char *key)
 
        grabber->keys = g_list_append(grabber->keys, keyinfo);  
 }
+
+gboolean
+sugar_key_grabber_is_modifier(SugarKeyGrabber *grabber, guint keycode)
+{
+       Display *xdisplay;
+       XModifierKeymap *modmap;
+       gint size, i;
+       gboolean is_modifier = FALSE;
+
+       xdisplay = gdk_x11_drawable_get_xdisplay(GDK_DRAWABLE (grabber->root));
+
+       modmap = XGetModifierMapping (xdisplay);
+       
+       size = 8 * modmap->max_keypermod;
+       for (i = 0; i < size; i++) {
+               if (keycode == modmap->modifiermap[i]) {
+                       is_modifier = TRUE;
+                       break;
+               }
+       }
+       
+       XFreeModifiermap (modmap);
+       
+       return is_modifier;
+}
+
+
+gboolean
+sugar_key_grabber_is_specific_modifier(SugarKeyGrabber *grabber, guint 
keycode, guint mask)
+{
+       Display *xdisplay;
+       XModifierKeymap *modmap;
+       gint start, end, i, mod_index;
+       gboolean is_modifier = FALSE;
+
+       xdisplay = gdk_x11_drawable_get_xdisplay(GDK_DRAWABLE (grabber->root));
+
+       modmap = XGetModifierMapping (xdisplay);
+       
+       mod_index = 0;
+       mask = mask >> 1;
+       while (mask != 0) {
+               mask = mask >> 1;
+               mod_index += 1;
+       }
+       
+       start = mod_index * modmap->max_keypermod;
+       end = (mod_index + 1) * modmap->max_keypermod;
+       for (i = start; i < end; i++) {
+               if (keycode == modmap->modifiermap[i]) {
+                       is_modifier = TRUE;
+                       break;
+               }
+       }
+       
+       XFreeModifiermap (modmap);
+       
+       return is_modifier;
+}
diff --git a/src/sugar/sugar-key-grabber.h b/src/sugar/sugar-key-grabber.h
index 5b734e7..cf6efe2 100644
--- a/src/sugar/sugar-key-grabber.h
+++ b/src/sugar/sugar-key-grabber.h
@@ -60,6 +60,12 @@ void     sugar_key_grabber_grab              
(SugarKeyGrabber *grabber,
 char    *sugar_key_grabber_get_key  (SugarKeyGrabber *grabber,
                                                                         guint  
          keycode,
                                                                         guint  
          state);
+gboolean sugar_key_grabber_is_modifier          (SugarKeyGrabber *grabber,
+                                                 guint            keycode);
+gboolean sugar_key_grabber_is_specific_modifier (SugarKeyGrabber *grabber,
+                                                 guint            keycode,
+                                                 guint            mask);
+
 
 G_END_DECLS
 

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