static void
sp_gradient_context_add_stop_near_point (SPGradientContext *rc, SPItem *item, Geom::Point mouse_p, guint32 /*etime*/)
{
// item is the selected item. mouse_p the location in doc coordinates of where to add the stop
SPEventContext *ec = SP_EVENT_CONTEXT(rc);
SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop;
double tolerance = (double) ec->tolerance;
ec->get_drag()->addStopNearPoint (item, mouse_p, tolerance/desktop->current_zoom());
sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT,
_("Add gradient stop"));
ec->get_drag()->updateDraggers();
}
static bool
sp_gradient_context_is_over_line (SPGradientContext *rc, SPItem *item, Geom::Point event_p)
{
SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop;
//Translate mouse point into proper coord system
rc->mousepoint_doc = desktop->w2d(event_p);
SPCtrlLine* line = SP_CTRLLINE(item);
Geom::Point nearest = snap_vector_midpoint (rc->mousepoint_doc, line->s, line->e, 0);
double dist_screen = Geom::L2 (rc->mousepoint_doc - nearest) * desktop->current_zoom();
double tolerance = (double) SP_EVENT_CONTEXT(rc)->tolerance;
bool close = (dist_screen < tolerance);
return close;
}
/**
Split row/column near the mouse point.
*/
static void sp_mesh_context_split_near_point(SPMeshContext *rc, SPItem *item, Geom::Point mouse_p, guint32 /*etime*/)
{
#ifdef DEBUG_MESH
std::cout << "sp_mesh_context_split_near_point: entrance: " << mouse_p << std::endl;
#endif
// item is the selected item. mouse_p the location in doc coordinates of where to add the stop
SPEventContext *ec = SP_EVENT_CONTEXT(rc);
SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop;
double tolerance = (double) ec->tolerance;
ec->get_drag()->addStopNearPoint (item, mouse_p, tolerance/desktop->current_zoom());
DocumentUndo::done(sp_desktop_document (desktop), SP_VERB_CONTEXT_MESH,
_("Split mesh row/column"));
ec->get_drag()->updateDraggers();
}
/**
Returns true if mouse cursor over mesh edge.
*/
static bool
sp_mesh_context_is_over_line (SPMeshContext *rc, SPItem *item, Geom::Point event_p)
{
SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop;
//Translate mouse point into proper coord system
rc->mousepoint_doc = desktop->w2d(event_p);
SPCtrlCurve *curve = SP_CTRLCURVE(item);
Geom::BezierCurveN<3> b( curve->p0, curve->p1, curve->p2, curve->p3 );
Geom::Coord coord = b.nearestPoint( rc->mousepoint_doc ); // Coord == double
Geom::Point nearest = b( coord );
double dist_screen = Geom::L2 (rc->mousepoint_doc - nearest) * desktop->current_zoom();
double tolerance = (double) SP_EVENT_CONTEXT(rc)->tolerance;
bool close = (dist_screen < tolerance);
return close;
}
