static void
gesture_end (ClutterGestureAction *action,
ClutterActor *actor)
{
ClutterSwipeActionPrivate *priv = CLUTTER_SWIPE_ACTION (action)->priv;
gfloat press_x, press_y;
gfloat release_x, release_y;
ClutterSwipeDirection direction = 0;
gboolean can_emit_swipe;
clutter_gesture_action_get_press_coords (action,
0,
&press_x, &press_y);
clutter_gesture_action_get_release_coords (action,
0,
&release_x, &release_y);
if (release_x - press_x > priv->threshold)
direction |= CLUTTER_SWIPE_DIRECTION_RIGHT;
else if (press_x - release_x > priv->threshold)
direction |= CLUTTER_SWIPE_DIRECTION_LEFT;
if (release_y - press_y > priv->threshold)
direction |= CLUTTER_SWIPE_DIRECTION_DOWN;
else if (press_y - release_y > priv->threshold)
direction |= CLUTTER_SWIPE_DIRECTION_UP;
/* XXX:2.0 remove */
g_signal_emit (action, swipe_signals[SWIPE], 0, actor, direction,
&can_emit_swipe);
if (can_emit_swipe)
g_signal_emit (action, swipe_signals[SWEPT], 0, actor, direction);
}
static void on_gesture_begin(ClutterGestureAction *action, ClutterActor *stage, gpointer data) {
gfloat x, y;
ClutterColor transp = {0, 0, 0, 0};
ClutterColor grey = {30, 30, 30, 128};
switch (tool){
case TOOL_RECTANGLE:
clutter_gesture_action_get_press_coords(action, 0, &x, &y);
tmpRect = clutter_rectangle_new_with_color(&transp);
clutter_rectangle_set_border_width(CLUTTER_RECTANGLE(tmpRect), 1);
clutter_rectangle_set_border_color(CLUTTER_RECTANGLE(tmpRect), &grey);
clutter_actor_set_position(tmpRect, x, y);
clutter_actor_set_size(tmpRect, 0, 0);
clutter_actor_add_child(CLUTTER_ACTOR(stage), tmpRect);
clutter_actor_show(tmpRect);
x_0 = x;
y_0 = y;
break;
default:
break;
}
}
static gboolean
gesture_progress (ClutterGestureAction *action,
ClutterActor *actor)
{
ClutterSwipeActionPrivate *priv = CLUTTER_SWIPE_ACTION (action)->priv;
gfloat press_x, press_y;
gfloat motion_x, motion_y;
gfloat delta_x, delta_y;
ClutterSwipeDirection h_direction = 0, v_direction = 0;
clutter_gesture_action_get_press_coords (action,
0,
&press_x,
&press_y);
clutter_gesture_action_get_motion_coords (action,
0,
&motion_x,
&motion_y);
delta_x = press_x - motion_x;
delta_y = press_y - motion_y;
if (delta_x >= priv->threshold)
h_direction = CLUTTER_SWIPE_DIRECTION_RIGHT;
else if (delta_x < -priv->threshold)
h_direction = CLUTTER_SWIPE_DIRECTION_LEFT;
if (delta_y >= priv->threshold)
v_direction = CLUTTER_SWIPE_DIRECTION_DOWN;
else if (delta_y < -priv->threshold)
v_direction = CLUTTER_SWIPE_DIRECTION_UP;
/* cancel gesture on direction reversal */
if (priv->h_direction == 0)
priv->h_direction = h_direction;
if (priv->v_direction == 0)
priv->v_direction = v_direction;
if (priv->h_direction != h_direction)
return FALSE;
if (priv->v_direction != v_direction)
return FALSE;
return TRUE;
}
