Code

Warning cleanup.
[inkscape.git] / src / seltrans.cpp
index 4bb1b3d2bc1fdfd64febfe2aa55413f9580ebfff..e55c25d797a2ce1fc643394a87b06f7a0e21c62a 100644 (file)
@@ -285,17 +285,21 @@ void Inkscape::SelTrans::grab(Geom::Point const &p, gdouble x, gdouble y, bool s
 
     // Next, get all points to consider for snapping
     SnapManager const &m = _desktop->namedview->snap_manager;
+       Inkscape::SnapPreferences local_snapprefs = m.snapprefs;
+       local_snapprefs.setSnapToItemNode(true); // We should get at least the cusp nodes here. This might
+       // have been turned off because (for example) the user only want paths as a snap target, not nodes
+       // but as a snap source we still need some nodes though!
     _snap_points.clear();
-    _snap_points = selection->getSnapPoints(&m.snapprefs);
-    std::vector<Geom::Point> snap_points_hull = selection->getSnapPointsConvexHull(&m.snapprefs);
-    if (_snap_points.size() > 100) {
-        /* Snapping a huge number of nodes will take way too long, so limit the number of snappable nodes
-        An average user would rarely ever try to snap such a large number of nodes anyway, because
-        (s)he could hardly discern which node would be snapping */
-        _snap_points = snap_points_hull;
-        // Unfortunately, by now we will have lost the font-baseline snappoints :-(
-    }
-    
+       _snap_points = selection->getSnapPoints(&local_snapprefs);
+       std::vector<Geom::Point> snap_points_hull = selection->getSnapPointsConvexHull(&local_snapprefs);
+       if (_snap_points.size() > 100) {
+               /* Snapping a huge number of nodes will take way too long, so limit the number of snappable nodes
+               An average user would rarely ever try to snap such a large number of nodes anyway, because
+               (s)he could hardly discern which node would be snapping */
+               _snap_points = snap_points_hull;
+               // Unfortunately, by now we will have lost the font-baseline snappoints :-(
+       }
+
     // Find bbox hulling all special points, which excludes stroke width. Here we need to include the
     // path nodes, for example because a rectangle which has been converted to a path doesn't have
     // any other special points
@@ -312,11 +316,10 @@ void Inkscape::SelTrans::grab(Geom::Point const &p, gdouble x, gdouble y, bool s
 
     _bbox_points.clear();
     if (_bbox) {
-        // ... and add the bbox corners to _bbox_points
-        for ( unsigned i = 0 ; i < 4 ; i++ ) {
-            _bbox_points.push_back(_bbox->corner(i));
-        }
-        // There are two separate "opposites" (i.e. opposite w.r.t. the handle being dragged):
+       if (m.snapprefs.getSnapModeBBox()) {
+               getBBoxPoints(_bbox, &_bbox_points, true, m.snapprefs.getSnapBBoxEdgeMidpoints(), m.snapprefs.getSnapBBoxMidpoints());
+       }
+       // There are two separate "opposites" (i.e. opposite w.r.t. the handle being dragged):
         //  - one for snapping the boundingbox, which can be either visual or geometric
         //  - one for snapping the special points
         // The "opposite" in case of a geometric boundingbox always coincides with the "opposite" for the special points
@@ -326,14 +329,25 @@ void Inkscape::SelTrans::grab(Geom::Point const &p, gdouble x, gdouble y, bool s
         _opposite_for_specpoints = snap_points_bbox.min() + snap_points_bbox.dimensions() * Geom::Scale(1-x, 1-y);
         _opposite = _opposite_for_bboxpoints;
     }
-    
-    // When snapping the node closest to the mouse pointer is absolutely preferred over the closest snap 
+
+    // When snapping the node closest to the mouse pointer is absolutely preferred over the closest snap
     // (i.e. when weight == 1), then we will not even try to snap to other points and discard those other
-    // points immediately. 
+    // points immediately.
     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
        if (prefs->getBool("/options/snapclosestonly/value", false)) {
-       _keepClosestPointOnly(_snap_points, p);
-       _keepClosestPointOnly(_bbox_points, p);
+       if (m.snapprefs.getSnapModeNode()) {
+                       _keepClosestPointOnly(_snap_points, p);
+       } else {
+               _snap_points.clear(); // don't keep any point
+       }
+
+       if (m.snapprefs.getSnapModeBBox()) {
+                       _keepClosestPointOnly(_bbox_points, p);
+               } else {
+                       _bbox_points.clear(); // don't keep any point
+               }
+
+       g_assert(_bbox_points.size() < 2 && _snap_points.size() < 2);
        if (_snap_points.size() == 1 && _bbox_points.size() == 1) { //both vectors can only have either one or zero elements
                // So we have exactly one bbox corner and one node left; now find out which is closest and delete the other one
                if (Geom::L2(_snap_points.at(0) - p) < Geom::L2(_bbox_points.at(0) - p)) {
@@ -342,9 +356,21 @@ void Inkscape::SelTrans::grab(Geom::Point const &p, gdouble x, gdouble y, bool s
                        _snap_points.clear();
                }
                }
+
+       // Now either _bbox_points or _snap_points has a single element, the other one has zero..... or both have zero elements
+       g_assert((_bbox_points.size() + _snap_points.size()) < 2);
+       if (m.snapprefs.getSnapEnabledGlobally()) {
+                       if (_bbox_points.size() == 1) {
+                               _desktop->snapindicator->set_new_snapsource(_bbox_points.at(0));
+                       } else if (_snap_points.size() == 1){
+                               _desktop->snapindicator->set_new_snapsource(_snap_points.at(0));
+                       }
+       }
     }
 
-    // The lines below are usefull for debugging any snapping issues, as they'll spit out all points that are considered for snapping
+       sp_canvas_set_snap_delay_active(_desktop->canvas, true);
+
+    // The lines below are useful for debugging any snapping issues, as they'll spit out all points that are considered for snapping
 
     /*std::cout << "Number of snap points:  " << _snap_points.size() << std::endl;
     for (std::vector<Geom::Point>::const_iterator i = _snap_points.begin(); i != _snap_points.end(); i++)
@@ -410,6 +436,10 @@ void Inkscape::SelTrans::ungrab()
     _grabbed = false;
     _show_handles = true;
 
+    sp_canvas_set_snap_delay_active(_desktop->canvas, false);
+
+    _desktop->snapindicator->remove_snapsource();
+
     Inkscape::Selection *selection = sp_desktop_selection(_desktop);
     _updateVolatileState();
 
@@ -970,15 +1000,15 @@ gboolean Inkscape::SelTrans::scaleRequest(Geom::Point &pt, guint state)
         if (!(bb.getSnapped() || sn.getSnapped())) {
             // We didn't snap at all! Don't update the handle position, just calculate the new transformation
             _calcAbsAffineDefault(default_scale);
-            _desktop->snapindicator->remove_snappoint();
+            _desktop->snapindicator->remove_snaptarget();
         } else if (bd < sd) {
             // We snapped the bbox (which is either visual or geometric)
-            _desktop->snapindicator->set_new_snappoint(bb);
+            _desktop->snapindicator->set_new_snaptarget(bb);
             default_scale = Geom::Scale(bb.getTransformation());
             // Calculate the new transformation and update the handle position
             pt = _calcAbsAffineDefault(default_scale);
         } else {
-            _desktop->snapindicator->set_new_snappoint(sn);
+            _desktop->snapindicator->set_new_snaptarget(sn);
             // We snapped the special points (e.g. nodes), which are not at the visual bbox
             // The handle location however (pt) might however be at the visual bbox, so we
             // will have to calculate pt taking the stroke width into account
@@ -1072,13 +1102,13 @@ gboolean Inkscape::SelTrans::stretchRequest(SPSelTransHandle const &handle, Geom
         if (!(bb.getSnapped() || sn.getSnapped())) {
             // We didn't snap at all! Don't update the handle position, just calculate the new transformation
             _calcAbsAffineDefault(default_scale);
-            _desktop->snapindicator->remove_snappoint();
+            _desktop->snapindicator->remove_snaptarget();
         } else if (bd < sd) {
-            _desktop->snapindicator->set_new_snappoint(bb);
+            _desktop->snapindicator->set_new_snaptarget(bb);
             // Calculate the new transformation and update the handle position
             pt = _calcAbsAffineDefault(default_scale);
         } else {
-            _desktop->snapindicator->set_new_snappoint(sn);
+            _desktop->snapindicator->set_new_snaptarget(sn);
             // We snapped the special points (e.g. nodes), which are not at the visual bbox
             // The handle location however (pt) might however be at the visual bbox, so we
             // will have to calculate pt taking the stroke width into account
@@ -1171,10 +1201,10 @@ gboolean Inkscape::SelTrans::skewRequest(SPSelTransHandle const &handle, Geom::P
         if (sn.getSnapped()) {
             // We snapped something, so change the skew to reflect it
             Geom::Coord const sd = sn.getSnapped() ? sn.getTransformation()[0] : NR_HUGE;
-             _desktop->snapindicator->set_new_snappoint(sn);
+             _desktop->snapindicator->set_new_snaptarget(sn);
             skew[dim_a] = sd;
         } else {
-            _desktop->snapindicator->remove_snappoint();
+            _desktop->snapindicator->remove_snaptarget();
         }
     }
 
@@ -1401,13 +1431,13 @@ void Inkscape::SelTrans::moveTo(Geom::Point const &xy, guint state)
                 // individually for each point to be snapped; this will be handled however by _snapTransformed()
                 s.push_back(m.constrainedSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_BBOX,
                                                          _bbox_points,
-                                                         _point, 
+                                                         _point,
                                                          Inkscape::Snapper::ConstraintLine(component_vectors[dim]),
                                                          dxy));
 
                 s.push_back(m.constrainedSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_NODE,
                                                          _snap_points,
-                                                         _point, 
+                                                         _point,
                                                          Inkscape::Snapper::ConstraintLine(component_vectors[dim]),
                                                          dxy));
             }
@@ -1439,10 +1469,10 @@ void Inkscape::SelTrans::moveTo(Geom::Point const &xy, guint state)
             }
         }
         if (best_snapped_point.getSnapped()) {
-            _desktop->snapindicator->set_new_snappoint(best_snapped_point);
+            _desktop->snapindicator->set_new_snaptarget(best_snapped_point);
         } else {
-            // We didn't snap, so remove any previous snap indicator 
-            _desktop->snapindicator->remove_snappoint();            
+            // We didn't snap, so remove any previous snap indicator
+            _desktop->snapindicator->remove_snaptarget();
             if (control) {
                 // If we didn't snap, then we should still constrain horizontally or vertically
                 // (When we did snap, then this constraint has already been enforced by
@@ -1455,7 +1485,7 @@ void Inkscape::SelTrans::moveTo(Geom::Point const &xy, guint state)
             }
         }
     }
-    
+
     Geom::Matrix const move((Geom::Translate(dxy)));
     Geom::Point const norm(0, 0);
     transform(move, norm);
@@ -1564,20 +1594,20 @@ Geom::Point Inkscape::SelTrans::_calcAbsAffineGeom(Geom::Scale const geom_scale)
 void Inkscape::SelTrans::_keepClosestPointOnly(std::vector<Geom::Point> &points, const Geom::Point &reference)
 {
        if (points.size() < 2) return;
-       
+
        Geom::Point closest_point = Geom::Point(NR_HUGE, NR_HUGE);
        Geom::Coord closest_dist = NR_HUGE;
-       
+
        for(std::vector<Geom::Point>::const_iterator i = points.begin(); i != points.end(); i++) {
                Geom::Coord dist = Geom::L2(*i - reference);
                if (i == points.begin() || dist < closest_dist) {
                        closest_point = *i;
-                       closest_dist = dist;                    
+                       closest_dist = dist;
                }
     }
-       
+
        points.clear();
-       points.push_back(closest_point);        
+       points.push_back(closest_point);
 }
 
 /*