Add option to disable drag and drop

Enabling drag and drop on a desktop (!touch) is too cumbersome: we
aren't allowed to select part of the link anymore since it would start
the drag and drop operation.

src/bin/config.c

@@ -89,6 +89,8 @@ config_init(void)
      (edd_base, Config, "cg_width", cg_width, EET_T_INT);
    EET_DATA_DESCRIPTOR_ADD_BASIC
      (edd_base, Config, "cg_height", cg_height, EET_T_INT);
+   EET_DATA_DESCRIPTOR_ADD_BASIC
+     (edd_base, Config, "drag_links", drag_links, EET_T_UCHAR);
 }
 
 void

src/bin/config.h

@@ -41,6 +41,7 @@ struct _Config
    Eina_Bool         urg_bell;
    Eina_Bool         multi_instance;
    Eina_Bool         custom_geometry;
+   Eina_Bool         drag_links;
    int               cg_width;
    int               cg_height;
 

src/bin/options_behavior.c

@@ -9,6 +9,15 @@
 
 static Evas_Object *op_w, *op_h;
 
+static void
+_cb_op_behavior_drag_links_chg(void *data, Evas_Object *obj, void *event EINA_UNUSED)
+{
+   Evas_Object *term = data;
+   Config *config = termio_config_get(term);
+   config->drag_links = elm_check_state_get(obj);
+   config_save(config, NULL);
+}
+
 static void
 _cb_op_behavior_jump_keypress_chg(void *data, Evas_Object *obj, void *event EINA_UNUSED)
 {
@@ -275,6 +284,16 @@ options_behavior(Evas_Object *opbox, Evas_Object *term)
    evas_object_smart_callback_add(o, "changed",
                                   _cb_op_behavior_custom_geometry, term);
 
+   o = elm_check_add(bx);
+   evas_object_size_hint_weight_set(o, EVAS_HINT_EXPAND, 0.0);
+   evas_object_size_hint_align_set(o, EVAS_HINT_FILL, 0.5);
+   elm_object_text_set(o, "Drag & drop links");
+   elm_check_state_set(o, config->drag_links);
+   elm_box_pack_end(bx, o);
+   evas_object_show(o);
+   evas_object_smart_callback_add(o, "changed",
+                                  _cb_op_behavior_drag_links_chg, term);
+
    o = elm_label_add(bx);
    evas_object_size_hint_weight_set(o, 0.0, 0.0);
    evas_object_size_hint_align_set(o, 0.0, 0.5);

src/bin/termio.c

@@ -400,11 +400,12 @@ _cb_link_move(void *data, Evas *e EINA_UNUSED, Evas_Object *obj, void *event)
    Termio *sd = evas_object_smart_data_get(data);
    Evas_Coord dx, dy;
    if (!sd) return;
-   
+
    if (!sd->link.down.down) return;
    dx = abs(ev->cur.canvas.x - sd->link.down.x);
    dy = abs(ev->cur.canvas.y - sd->link.down.y);
-   if ((sd->link.string) &&
+   if ((sd->config->drag_links) &&
+       (sd->link.string) &&
        ((dx > elm_config_finger_size_get()) ||
            (dy > elm_config_finger_size_get())))
      {