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rotate: Ensure delta is between [0..2π]

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This commit is contained in:
Carlos Garnacho 2014-05-06 11:43:31 +02:00
parent c34280d97b
commit 4589f0e0c8
1 changed files with 6 additions and 3 deletions
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9
gtk/gtkgesturerotate.c
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@ -110,15 +110,18 @@ static gboolean
_gtk_gesture_rotate_check_emit (GtkGestureRotate *gesture) _gtk_gesture_rotate_check_emit (GtkGestureRotate *gesture)
{ {
GtkGestureRotatePrivate *priv; GtkGestureRotatePrivate *priv;
gdouble angle; gdouble angle, delta;
if (!_gtk_gesture_rotate_get_angle (gesture, &angle)) if (!_gtk_gesture_rotate_get_angle (gesture, &angle))
return FALSE; return FALSE;
priv = gtk_gesture_rotate_get_instance_private (gesture); priv = gtk_gesture_rotate_get_instance_private (gesture);
delta = angle - priv->initial_angle;
g_signal_emit (gesture, signals[ANGLE_CHANGED], 0, if (delta < 0)
angle, angle - priv->initial_angle); delta += 2 * G_PI;
g_signal_emit (gesture, signals[ANGLE_CHANGED], 0, angle, delta);
return TRUE; return TRUE;
} }