/*! \brief
* \par Function Description
* This function modifies the internal values of the arc object
* *object according to the whichone parameter.
*
* The new values are given by <B>x</B> and/or <B>y</B>. Their meaning depends on the value of whichone.
*
* If <B>whichone</B> is equal to #ARC_CENTER, the (<B>x</B>,<B>y</B>) point is taken as the new center
* of the arc in world unit.
*
* If <B>whichone</B> is equal to #ARC_RADIUS, the <B>x</B> parameter is taken to be the radius
* of the arc in world unit. The <B>y</B> parameter is ignored.
*
* If <B>whichone</B> is equal to #ARC_START_ANGLE, the <B>x</B> parameter is the starting angle of the arc.
* <B>x</B> is in degrees. <B>y</B> is ignored.
*
* If <B>whichone</B> is equal to #ARC_SWEEP_ANGLE, the <B>x</B> parameter is the ending angle of the arc.
* <B>x</B> is in degrees. <B>y</B> is ignored.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in,out] object
* \param [in] x
* \param [in] y
* \param [in] whichone
*/
void
geda_arc_object_modify (TOPLEVEL *toplevel, OBJECT *object, int x, int y, int whichone)
{
o_emit_pre_change_notify (toplevel, object);
switch(whichone) {
case ARC_CENTER:
/* modify the center of arc object */
object->arc->x = x;
object->arc->y = y;
break;
case ARC_RADIUS:
/* modify the radius of arc object */
object->arc->radius = x;
break;
case ARC_START_ANGLE:
/* modify the start angle of the arc object */
object->arc->start_angle = x;
break;
case ARC_SWEEP_ANGLE:
/* modify the end angle of the arc object */
object->arc->sweep_angle = x;
break;
default:
break;
}
/* update the screen coords and the bounding box */
object->w_bounds_valid_for = NULL;
o_emit_change_notify (toplevel, object);
}
/* Called just before removing an OBJECT from a PAGE. */
static void
pre_object_removed (TOPLEVEL *toplevel, PAGE *page, OBJECT *object)
{
o_emit_pre_change_notify (toplevel, object);
/* Remove object from the list of connectible objects */
s_conn_remove_object (page, object);
/* Clear object parent pointer */
#ifndef NDEBUG
if (object->page == NULL) {
g_critical ("Object %p has NULL parent page!", object);
}
#endif
object->page = NULL;
/* Clear page's object_lastplace pointer if set */
if (page->object_lastplace == object) {
page->object_lastplace = NULL;
}
/* Remove object from connection system */
s_conn_remove_object_connections (toplevel, object);
}
/*! \brief Modify the description of a picture OBJECT.
* \par Function Description
* This function modifies the coordinates of one of the four corner of
* the picture. The new coordinates of the corner identified by
* <B>whichone</B> are given by <B>x</B> and <B>y</B> in world unit.
*
* The coordinates of the corner is modified in the world coordinate system.
* Screen coordinates and boundings are then updated.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in,out] object Picture OBJECT to modify.
* \param [in] x New x coordinate.
* \param [in] y New y coordinate.
* \param [in] whichone Which picture parameter to modify.
*
* <B>whichone</B> can have the following values:
* <DL>
* <DT>*</DT><DD>PICTURE_UPPER_LEFT
* <DT>*</DT><DD>PICTURE_LOWER_LEFT
* <DT>*</DT><DD>PICTURE_UPPER_RIGHT
* <DT>*</DT><DD>PICTURE_LOWER_RIGHT
* </DL>
*/
void o_picture_modify(TOPLEVEL *toplevel, OBJECT *object,
int x, int y, int whichone)
{
int tmp;
o_emit_pre_change_notify (toplevel, object);
/* change the position of the selected corner */
switch(whichone) {
case PICTURE_UPPER_LEFT:
object->picture->upper_x = x;
tmp = abs(object->picture->upper_x - object->picture->lower_x) /
object->picture->ratio;
if (y < object->picture->lower_y) {
tmp = -tmp;
}
object->picture->upper_y = object->picture->lower_y + tmp;
break;
case PICTURE_LOWER_LEFT:
object->picture->upper_x = x;
tmp = abs(object->picture->upper_x - object->picture->lower_x) /
object->picture->ratio;
if (y > object->picture->upper_y) {
tmp = -tmp;
}
object->picture->lower_y = object->picture->upper_y - tmp;
break;
case PICTURE_UPPER_RIGHT:
object->picture->lower_x = x;
tmp = abs(object->picture->upper_x - object->picture->lower_x) /
object->picture->ratio;
if (y < object->picture->lower_y) {
tmp = -tmp;
}
object->picture->upper_y = object->picture->lower_y + tmp;
break;
case PICTURE_LOWER_RIGHT:
object->picture->lower_x = x;
tmp = abs(object->picture->upper_x - object->picture->lower_x) /
object->picture->ratio;
if (y > object->picture->upper_y) {
tmp = -tmp;
}
object->picture->lower_y = object->picture->upper_y - tmp;
break;
default:
return;
}
/* need to update the upper left and lower right corners */
if(object->picture->upper_x > object->picture->lower_x) {
tmp = object->picture->upper_x;
object->picture->upper_x = object->picture->lower_x;
object->picture->lower_x = tmp;
}
if(object->picture->upper_y < object->picture->lower_y) {
tmp = object->picture->upper_y;
object->picture->upper_y = object->picture->lower_y;
object->picture->lower_y = tmp;
}
/* recalculate the screen coords and the boundings */
o_picture_recalc(toplevel, object);
o_emit_change_notify (toplevel, object);
}