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index bd12cde886c695ec13ebed228b97096cffe6e09c..005ca24c71c1fbe2e1b8bbb8112c5c5401f4ed26 100644 (file)
-#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.
#include "knotholder.h"
#include "sp-item.h"
#include "style.h"
-#include "prefs-utils.h"
+#include "preferences.h"
#include "macros.h"
#include <libnr/nr-matrix-ops.h>
#include "sp-pattern.h"
void
KnotHolderEntity::update_knot()
{
- NR::Matrix const i2d(from_2geom(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)
{
- NR::Matrix const i2d (from_2geom(sp_item_i2d_affine(item)));
- NR::Point s = p * i2d;
+ Geom::Matrix const i2d (item->i2d_affine());
+ Geom::Point s = p * i2d;
+
SnapManager &m = desktop->namedview->snap_manager;
- m.setup(desktop, item);
- m.freeSnapReturnByRef(Inkscape::Snapper::SNAPPOINT_NODE, s);
+ 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);
+
+ 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();
}
/* Pattern manipulation */
-static gdouble sp_pattern_extract_theta(SPPattern *pat, Geom::Point scale)
+/* TODO: this pattern manipulation is not able to handle general transformation matrices. Only matrices that are the result of a pure scale times a pure rotation. */
+
+static gdouble sp_pattern_extract_theta(SPPattern *pat)
{
- gdouble theta = asin(pat->patternTransform[1] / scale[NR::X]);
- if (pat->patternTransform[0] < 0) theta = M_PI - theta ;
- return theta;
+ Geom::Matrix transf = pat->patternTransform;
+ return Geom::atan2(transf.xAxis());
}
static Geom::Point sp_pattern_extract_scale(SPPattern *pat)
{
- Geom::Matrix transf = to_2geom(pat->patternTransform);
+ Geom::Matrix transf = pat->patternTransform;
return Geom::Point( transf.expansionX(), transf.expansionY() );
}
@@ -123,19 +145,20 @@ PatternKnotHolderEntityXY::knot_set(Geom::Point const &p, Geom::Point const &ori
{
SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
+ // FIXME: this snapping should be done together with knowing whether control was pressed. If GDK_CONTROL_MASK, then constrained snapping should be used.
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(NR::translate(q)));
+ item->adjust_pattern(Geom::Matrix(Geom::Translate(q)));
}
item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
gdouble y = 0;
Geom::Point delta = Geom::Point(x,y);
Geom::Point scale = sp_pattern_extract_scale(pat);
- gdouble theta = sp_pattern_extract_theta(pat, scale);
- delta = delta * NR::Matrix(NR::scale(scale))*NR::Matrix(NR::rotate(theta));
+ gdouble theta = sp_pattern_extract_theta(pat);
+ delta = delta * Geom::Matrix(Geom::Scale(scale))*Geom::Matrix(Geom::Rotate(theta));
delta = delta + sp_pattern_extract_trans(pat);
return delta;
}
void
PatternKnotHolderEntityAngle::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint state)
{
- int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
@@ -180,38 +204,45 @@ 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(NR::scale(scl)) * NR::Matrix(NR::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);
}
void
-PatternKnotHolderEntityScale::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint /*state*/)
+PatternKnotHolderEntityScale::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint state)
{
SPPattern *pat = SP_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style));
+ // FIXME: this snapping should be done together with knowing whether control was pressed. If GDK_CONTROL_MASK, then constrained snapping should be used.
Geom::Point p_snapped = snap_knot_position(p);
- // get angle from current transform, (need get current scale first to calculate angle)
- Geom::Point oldscale = sp_pattern_extract_scale(pat);
- gdouble theta = sp_pattern_extract_theta(pat,oldscale);
+ // get angle from current transform
+ gdouble theta = sp_pattern_extract_theta(pat);
// Get the new scale from the position of the knotholder
Geom::Point d = p_snapped - sp_pattern_extract_trans(pat);
- d *= Geom::Rotate(-theta);
gdouble pat_x = pattern_width(pat);
gdouble pat_y = pattern_height(pat);
- Geom::Point scl (d[NR::X] / pat_x, d[NR::Y] / pat_y);
+ Geom::Scale scl(1);
+ if ( state & GDK_CONTROL_MASK ) {
+ // if ctrl is pressed: use 1:1 scaling
+ gdouble pat_h = hypot(pat_x, pat_y);
+ scl = Geom::Scale(d.length() / pat_h);
+ } else {
+ d *= Geom::Rotate(-theta);
+ scl = Geom::Scale(d[Geom::X] / pat_x, d[Geom::Y] / pat_y);
+ }
- NR::Matrix rot = NR::Matrix(NR::scale(scl)) * NR::Matrix(NR::rotate(theta));
+ 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);
}
gdouble x = pattern_width(pat);
gdouble y = pattern_height(pat);
Geom::Point delta = Geom::Point(x,y);
- NR::Matrix a = pat->patternTransform;
+ Geom::Matrix a = pat->patternTransform;
a[4] = 0;
a[5] = 0;
delta = delta * a;
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 :