X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fknot-holder-entity.cpp;h=005ca24c71c1fbe2e1b8bbb8112c5c5401f4ed26;hb=8a2e76b7021b9b960d7c30801a1a14461d9b5939;hp=f6c82582bb412cd321c0aba63ff833e21cfa8338;hpb=e9b6af083e34e2397a8ddbe9781920733d09d151;p=inkscape.git

diff --git a/src/knot-holder-entity.cpp b/src/knot-holder-entity.cpp
index f6c82582b..005ca24c7 100644
--- a/src/knot-holder-entity.cpp
+++ b/src/knot-holder-entity.cpp
@@ -1,11 +1,10 @@
-#define __KNOT_HOLDER_ENTITY_C__
-
-/** \file 
- * KnotHolderEntity definition. 
- * 
+/** \file
+ * KnotHolderEntity definition.
+ *
  * Authors:
  *   Mitsuru Oka <oka326@parkcity.ne.jp>
  *   Maximilian Albert <maximilian.albert@gmail.com>
+ *   Abhishek Sharma
  *
  * Copyright (C) 1999-2001 Lauris Kaplinski
  * Copyright (C) 2000-2001 Ximian, Inc.
@@ -77,23 +76,45 @@ KnotHolderEntity::~KnotHolderEntity()
 void
 KnotHolderEntity::update_knot()
 {
-    Geom::Matrix const i2d(sp_item_i2d_affine(item));
+    Geom::Matrix const i2d(item->i2d_affine());
 
     Geom::Point dp(knot_get() * i2d);
 
     _moved_connection.block();
-    sp_knot_set_position(knot, dp, SP_KNOT_STATE_NORMAL); 
+    sp_knot_set_position(knot, dp, SP_KNOT_STATE_NORMAL);
     _moved_connection.unblock();
 }
 
 Geom::Point
 KnotHolderEntity::snap_knot_position(Geom::Point const &p)
 {
-    Geom::Matrix const i2d (sp_item_i2d_affine(item));
+    Geom::Matrix const i2d (item->i2d_affine());
+    Geom::Point s = p * i2d;
+
+    SnapManager &m = desktop->namedview->snap_manager;
+    m.setup(desktop, true, item);
+    m.freeSnapReturnByRef(s, Inkscape::SNAPSOURCE_NODE_HANDLE);
+    m.unSetup();
+
+    return s * i2d.inverse();
+}
+
+Geom::Point
+KnotHolderEntity::snap_knot_position_constrained(Geom::Point const &p, Inkscape::Snapper::SnapConstraint const &constraint)
+{
+    Geom::Matrix const i2d (item->i2d_affine());
     Geom::Point s = p * i2d;
+
     SnapManager &m = desktop->namedview->snap_manager;
     m.setup(desktop, true, item);
-    m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, s);
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    // constrainedSnap() will first project the point p onto the constraint line and then try to snap along that line.
+    // This way the constraint is already enforced, no need to worry about that later on
+    Inkscape::Snapper::SnapConstraint transformed_constraint = Inkscape::Snapper::SnapConstraint(constraint.getPoint() * i2d, (constraint.getPoint() + constraint.getDirection()) * i2d - constraint.getPoint() * i2d);
+    m.constrainedSnapReturnByRef(s, Inkscape::SNAPSOURCE_NODE_HANDLE, transformed_constraint);
+    m.unSetup();
+
     return s * i2d.inverse();
 }
 
@@ -128,16 +149,16 @@ PatternKnotHolderEntityXY::knot_set(Geom::Point const &p, Geom::Point const &ori
     Geom::Point p_snapped = snap_knot_position(p);
 
     if ( state & GDK_CONTROL_MASK ) {
-        if (fabs((p - origin)[NR::X]) > fabs((p - origin)[NR::Y])) {
-            p_snapped[NR::Y] = origin[NR::Y];
+        if (fabs((p - origin)[Geom::X]) > fabs((p - origin)[Geom::Y])) {
+            p_snapped[Geom::Y] = origin[Geom::Y];
         } else {
-            p_snapped[NR::X] = origin[NR::X];
+            p_snapped[Geom::X] = origin[Geom::X];
         }
     }
 
     if (state)  {
         Geom::Point const q = p_snapped - sp_pattern_extract_trans(pat);
-        sp_item_adjust_pattern(item, NR::Matrix(Geom::Translate(q)));
+        item->adjust_pattern(Geom::Matrix(Geom::Translate(q)));
     }
 
     item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
@@ -183,11 +204,11 @@ PatternKnotHolderEntityAngle::knot_set(Geom::Point const &p, Geom::Point const &
 
     // get the scale from the current transform so we can keep it.
     Geom::Point scl = sp_pattern_extract_scale(pat);
-    NR::Matrix rot = NR::Matrix(Geom::Scale(scl)) * NR::Matrix(Geom::Rotate(theta));
+    Geom::Matrix rot = Geom::Matrix(Geom::Scale(scl)) * Geom::Matrix(Geom::Rotate(theta));
     Geom::Point const t = sp_pattern_extract_trans(pat);
-    rot[4] = t[NR::X];
-    rot[5] = t[NR::Y];
-    sp_item_adjust_pattern(item, rot, true);
+    rot[4] = t[Geom::X];
+    rot[5] = t[Geom::Y];
+    item->adjust_pattern(rot, true);
     item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
 }
 
@@ -213,15 +234,15 @@ PatternKnotHolderEntityScale::knot_set(Geom::Point const &p, Geom::Point const &
         scl = Geom::Scale(d.length() / pat_h);
     } else {
         d *= Geom::Rotate(-theta);
-        scl = Geom::Scale(d[NR::X] / pat_x, d[NR::Y] / pat_y);
+        scl = Geom::Scale(d[Geom::X] / pat_x, d[Geom::Y] / pat_y);
     }
 
     Geom::Matrix rot = (Geom::Matrix)scl * Geom::Rotate(theta);
 
     Geom::Point const t = sp_pattern_extract_trans(pat);
-    rot[4] = t[NR::X];
-    rot[5] = t[NR::Y];
-    sp_item_adjust_pattern(item, rot, true);
+    rot[4] = t[Geom::X];
+    rot[5] = t[Geom::Y];
+    item->adjust_pattern(rot, true);
     item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
 }
 
@@ -251,4 +272,4 @@ PatternKnotHolderEntityScale::knot_get()
   fill-column:99
   End:
 */
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :