X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fsp-shape.cpp;h=d3f357e7688f51e1d6a025aa04eebe1d7738d0ed;hb=1e25a603bad48b0bb68458f31c1c6e551a466bd2;hp=daf85b534deafabf47898d1cd2444bf559c573ae;hpb=e612f493710e10718b4557f9280da618ae3bbcb4;p=inkscape.git diff --git a/src/sp-shape.cpp b/src/sp-shape.cpp index daf85b534..d3f357e76 100644 --- a/src/sp-shape.cpp +++ b/src/sp-shape.cpp @@ -1,5 +1,3 @@ -#define __SP_SHAPE_C__ - /* * Base class for shapes, including element * @@ -9,6 +7,7 @@ * Copyright (C) 1999-2002 Lauris Kaplinski * Copyright (C) 2000-2001 Ximian, Inc. * Copyright (C) 2004 John Cliff + * Copyright (C) 2007-2008 Johan Engelen * * Released under GNU GPL, read the file 'COPYING' for more information */ @@ -17,35 +16,39 @@ # include "config.h" #endif - -#include #include #include #include #include +#include <2geom/rect.h> +#include <2geom/transforms.h> +#include <2geom/pathvector.h> +#include "helper/geom.h" +#include "helper/geom-nodetype.h" #include #include #include "macros.h" #include "display/nr-arena-shape.h" +#include "display/curve.h" #include "print.h" #include "document.h" #include "style.h" #include "marker.h" #include "sp-path.h" -#include "prefs-utils.h" +#include "preferences.h" #include "attributes.h" -#include "live_effects/effect.h" #include "live_effects/lpeobject.h" -#include "live_effects/lpeobject-reference.h" #include "uri.h" #include "extract-uri.h" #include "uri-references.h" #include "bad-uri-exception.h" #include "xml/repr.h" +#include "util/mathfns.h" // for triangle_area() + #define noSHAPE_VERBOSE static void sp_shape_class_init (SPShapeClass *klass); @@ -58,20 +61,17 @@ static void sp_shape_release (SPObject *object); static void sp_shape_set(SPObject *object, unsigned key, gchar const *value); static void sp_shape_update (SPObject *object, SPCtx *ctx, unsigned int flags); static void sp_shape_modified (SPObject *object, unsigned int flags); -static Inkscape::XML::Node *sp_shape_write(SPObject *object, Inkscape::XML::Node *repr, guint flags); +static Inkscape::XML::Node *sp_shape_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags); -static void sp_shape_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags); +static void sp_shape_bbox(SPItem const *item, NRRect *bbox, Geom::Matrix const &transform, unsigned const flags); void sp_shape_print (SPItem * item, SPPrintContext * ctx); static NRArenaItem *sp_shape_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags); static void sp_shape_hide (SPItem *item, unsigned int key); -static void sp_shape_snappoints (SPItem const *item, SnapPointsIter p); +static void sp_shape_snappoints (SPItem const *item, SnapPointsIter p, Inkscape::SnapPreferences const *snapprefs); static void sp_shape_update_marker_view (SPShape *shape, NRArenaItem *ai); -static void lpeobject_ref_changed(SPObject *old_ref, SPObject *ref, SPShape *shape); -static void lpeobject_ref_modified(SPObject *href, guint flags, SPShape *shape); - -static SPItemClass *parent_class; +static SPLPEItemClass *parent_class; /** * Registers the SPShape class with Gdk and returns its type number. @@ -91,7 +91,7 @@ sp_shape_get_type (void) (GInstanceInitFunc) sp_shape_init, NULL, /* value_table */ }; - type = g_type_register_static (SP_TYPE_ITEM, "SPShape", &info, (GTypeFlags)0); + type = g_type_register_static (SP_TYPE_LPE_ITEM, "SPShape", &info, (GTypeFlags)0); } return type; } @@ -103,17 +103,12 @@ sp_shape_get_type (void) static void sp_shape_class_init (SPShapeClass *klass) { - GObjectClass *gobject_class; - SPObjectClass *sp_object_class; - SPItemClass * item_class; - SPPathClass * path_class; - - gobject_class = (GObjectClass *) klass; - sp_object_class = (SPObjectClass *) klass; - item_class = (SPItemClass *) klass; - path_class = (SPPathClass *) klass; + GObjectClass *gobject_class = G_OBJECT_CLASS(klass); + SPObjectClass *sp_object_class = SP_OBJECT_CLASS(klass); + SPItemClass * item_class = SP_ITEM_CLASS(klass); + SPLPEItemClass * lpe_item_class = SP_LPE_ITEM_CLASS(klass); - parent_class = (SPItemClass *)g_type_class_peek_parent (klass); + parent_class = (SPLPEItemClass *)g_type_class_peek_parent (klass); gobject_class->finalize = sp_shape_finalize; @@ -129,9 +124,9 @@ sp_shape_class_init (SPShapeClass *klass) item_class->show = sp_shape_show; item_class->hide = sp_shape_hide; item_class->snappoints = sp_shape_snappoints; + lpe_item_class->update_patheffect = NULL; klass->set_shape = NULL; - klass->update_patheffect = NULL; } /** @@ -140,10 +135,6 @@ sp_shape_class_init (SPShapeClass *klass) static void sp_shape_init (SPShape *shape) { - shape->path_effect_href = NULL; - shape->path_effect_ref = new Inkscape::LivePathEffect::LPEObjectReference(SP_OBJECT(shape)); - new (&shape->lpe_modified_connection) sigc::connection(); - for ( int i = 0 ; i < SP_MARKER_LOC_QTY ; i++ ) { new (&shape->release_connect[i]) sigc::connection(); new (&shape->modified_connect[i]) sigc::connection(); @@ -177,13 +168,13 @@ sp_shape_finalize (GObject *object) static void sp_shape_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr) { - SP_SHAPE(object)->path_effect_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(lpeobject_ref_changed), SP_SHAPE(object))); - - sp_object_read_attr(object, "inkscape:path-effect"); - if (((SPObjectClass *) (parent_class))->build) { (*((SPObjectClass *) (parent_class))->build) (object, document, repr); } + + for (int i = 0 ; i < SP_MARKER_LOC_QTY ; i++) { + sp_shape_set_marker (object, i, object->style->marker[i].value); + } } /** @@ -209,24 +200,17 @@ sp_shape_release (SPObject *object) for (i=SP_MARKER_LOC_START; imarker[i]) { - sp_signal_disconnect_by_data (shape->marker[i], object); for (v = item->display; v != NULL; v = v->next) { sp_marker_hide ((SPMarker *) shape->marker[i], NR_ARENA_ITEM_GET_KEY (v->arenaitem) + i); } + shape->release_connect[i].disconnect(); + shape->modified_connect[i].disconnect(); shape->marker[i] = sp_object_hunref (shape->marker[i], object); } } if (shape->curve) { - shape->curve = sp_curve_unref (shape->curve); + shape->curve = shape->curve->unref(); } - - if (shape->path_effect_href) { - g_free(shape->path_effect_href); - } - shape->path_effect_ref->detach(); - - shape->lpe_modified_connection.disconnect(); - shape->lpe_modified_connection.~connection(); if (((SPObjectClass *) parent_class)->release) { ((SPObjectClass *) parent_class)->release (object); @@ -238,54 +222,16 @@ sp_shape_release (SPObject *object) static void sp_shape_set(SPObject *object, unsigned int key, gchar const *value) { - SPShape *shape = (SPShape *) object; - - switch (key) { - case SP_ATTR_INKSCAPE_PATH_EFFECT: - if ( value && shape->path_effect_href && ( strcmp(value, shape->path_effect_href) == 0 ) ) { - /* No change, do nothing. */ - } else { - if (shape->path_effect_href) { - g_free(shape->path_effect_href); - shape->path_effect_href = NULL; - } - if (value) { - shape->path_effect_href = g_strdup(value); - - // Now do the attaching, which emits the changed signal. - try { - shape->path_effect_ref->attach(Inkscape::URI(value)); - } catch (Inkscape::BadURIException &e) { - g_warning("%s", e.what()); - shape->path_effect_ref->detach(); - } - } else { - // Detach, which emits the changed signal. - shape->path_effect_ref->detach(); - } - } - break; - default: - if (((SPObjectClass *) parent_class)->set) { - ((SPObjectClass *) parent_class)->set(object, key, value); - } - break; + if (((SPObjectClass *) parent_class)->set) { + ((SPObjectClass *) parent_class)->set(object, key, value); } } static Inkscape::XML::Node * -sp_shape_write(SPObject *object, Inkscape::XML::Node *repr, guint flags) +sp_shape_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags) { - SPShape *shape = (SPShape *) object; - - if ( shape->path_effect_href ) { - repr->setAttribute("inkscape:path-effect", shape->path_effect_href); - } else { - repr->setAttribute("inkscape:path-effect", NULL); - } - if (((SPObjectClass *)(parent_class))->write) { - ((SPObjectClass *)(parent_class))->write(object, repr, flags); + ((SPObjectClass *)(parent_class))->write(object, doc, repr, flags); } return repr; @@ -301,375 +247,214 @@ sp_shape_update (SPObject *object, SPCtx *ctx, unsigned int flags) SPItem *item = (SPItem *) object; SPShape *shape = (SPShape *) object; - if (((SPObjectClass *) (parent_class))->update) { - (* ((SPObjectClass *) (parent_class))->update) (object, ctx, flags); - } + if (((SPObjectClass *) (parent_class))->update) { + (* ((SPObjectClass *) (parent_class))->update) (object, ctx, flags); + } - /* This stanza checks that an object's marker style agrees with - * the marker objects it has allocated. sp_shape_set_marker ensures - * that the appropriate marker objects are present (or absent) to - * match the style. - */ - /* TODO: It would be nice if this could be done at an earlier level */ - for (int i = 0 ; i < SP_MARKER_LOC_QTY ; i++) { - sp_shape_set_marker (object, i, object->style->marker[i].value); + /* This stanza checks that an object's marker style agrees with + * the marker objects it has allocated. sp_shape_set_marker ensures + * that the appropriate marker objects are present (or absent) to + * match the style. + */ + for (int i = 0 ; i < SP_MARKER_LOC_QTY ; i++) { + sp_shape_set_marker (object, i, object->style->marker[i].value); } - if (flags & (SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) { - SPStyle *style; - style = SP_OBJECT_STYLE (object); - if (style->stroke_width.unit == SP_CSS_UNIT_PERCENT) { - SPItemCtx *ictx = (SPItemCtx *) ctx; - double const aw = 1.0 / NR::expansion(ictx->i2vp); - style->stroke_width.computed = style->stroke_width.value * aw; - for (SPItemView *v = ((SPItem *) (shape))->display; v != NULL; v = v->next) { - nr_arena_shape_set_style ((NRArenaShape *) v->arenaitem, style); - } - } - } - - if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_PARENT_MODIFIED_FLAG)) { - /* This is suboptimal, because changing parent style schedules recalculation */ - /* But on the other hand - how can we know that parent does not tie style and transform */ - NR::Maybe paintbox = SP_ITEM(object)->getBounds(NR::identity()); - for (SPItemView *v = SP_ITEM (shape)->display; v != NULL; v = v->next) { - NRArenaShape * const s = NR_ARENA_SHAPE(v->arenaitem); - if (flags & SP_OBJECT_MODIFIED_FLAG) { - nr_arena_shape_set_path(s, shape->curve, (flags & SP_OBJECT_USER_MODIFIED_FLAG_B)); - } - if (paintbox) { - s->setPaintBox(*paintbox); - } - } - } - - if (sp_shape_has_markers (shape)) { - - /* Dimension marker views */ - for (SPItemView *v = item->display; v != NULL; v = v->next) { - - if (!v->arenaitem->key) { - /* Get enough keys for all, start, mid and end marker types, - ** and set this view's arenaitem key to the first of these keys. - */ - NR_ARENA_ITEM_SET_KEY ( - v->arenaitem, - sp_item_display_key_new (SP_MARKER_LOC_QTY) - ); - } - - for (int i = 0 ; i < SP_MARKER_LOC_QTY ; i++) { - if (shape->marker[i]) { - sp_marker_show_dimension ((SPMarker *) shape->marker[i], - NR_ARENA_ITEM_GET_KEY (v->arenaitem) + i - SP_MARKER_LOC, - sp_shape_number_of_markers (shape, i)); - } - } + if (flags & (SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) { + SPStyle *style; + style = SP_OBJECT_STYLE (object); + if (style->stroke_width.unit == SP_CSS_UNIT_PERCENT) { + SPItemCtx *ictx = (SPItemCtx *) ctx; + double const aw = 1.0 / NR::expansion(ictx->i2vp); + style->stroke_width.computed = style->stroke_width.value * aw; + for (SPItemView *v = ((SPItem *) (shape))->display; v != NULL; v = v->next) { + nr_arena_shape_set_style ((NRArenaShape *) v->arenaitem, style); } + } + } - /* Update marker views */ - for (SPItemView *v = item->display; v != NULL; v = v->next) { - sp_shape_update_marker_view (shape, v->arenaitem); + if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_PARENT_MODIFIED_FLAG)) { + /* This is suboptimal, because changing parent style schedules recalculation */ + /* But on the other hand - how can we know that parent does not tie style and transform */ + Geom::OptRect paintbox = SP_ITEM(object)->getBounds(Geom::identity(), SPItem::GEOMETRIC_BBOX); + for (SPItemView *v = SP_ITEM (shape)->display; v != NULL; v = v->next) { + NRArenaShape * const s = NR_ARENA_SHAPE(v->arenaitem); + if (flags & SP_OBJECT_MODIFIED_FLAG) { + nr_arena_shape_set_path(s, shape->curve, (flags & SP_OBJECT_USER_MODIFIED_FLAG_B)); } - } -} - - -/** -* Works out whether a marker of a given type is required at a particular -* point on a shape. -* -* \param shape Shape of interest. -* \param m Marker type (e.g. SP_MARKER_LOC_START) -* \param bp Path segment. -* \return 1 if a marker is required here, otherwise 0. -*/ -bool -sp_shape_marker_required(SPShape const *shape, int const m, NArtBpath *bp) -{ - if (shape->marker[m] == NULL) { - return false; + if (paintbox) { + s->setPaintBox(*paintbox); + } + } } - if (bp == SP_CURVE_BPATH(shape->curve)) - return m == SP_MARKER_LOC_START; - else if (bp[1].code == NR_END) - return m == SP_MARKER_LOC_END; - else - return m == SP_MARKER_LOC_MID; -} - -static bool -is_moveto(NRPathcode const c) -{ - return c == NR_MOVETO || c == NR_MOVETO_OPEN; -} - -/** - * Helper function that advances a subpath's bpath to the first subpath - * by checking for moveto segments. - * - * \pre The bpath[] containing bp begins with a moveto. - */ -static NArtBpath const * -first_seg_in_subpath(NArtBpath const *bp) -{ - while (!is_moveto(bp->code)) { - --bp; - } - return bp; -} + if (sp_shape_has_markers (shape)) { + /* Dimension marker views */ + for (SPItemView *v = item->display; v != NULL; v = v->next) { + if (!v->arenaitem->key) { + NR_ARENA_ITEM_SET_KEY (v->arenaitem, sp_item_display_key_new (SP_MARKER_LOC_QTY)); + } + for (int i = 0 ; i < SP_MARKER_LOC_QTY ; i++) { + if (shape->marker[i]) { + sp_marker_show_dimension ((SPMarker *) shape->marker[i], + NR_ARENA_ITEM_GET_KEY (v->arenaitem) + i - SP_MARKER_LOC, + sp_shape_number_of_markers (shape, i)); + } + } + } -/** - * Advances the bpath to the last segment in the subpath. - */ -static NArtBpath const * -last_seg_in_subpath(NArtBpath const *bp) -{ - for(;;) { - ++bp; - switch (bp->code) { - case NR_MOVETO: - case NR_MOVETO_OPEN: - case NR_END: - --bp; - return bp; - - default: continue; + /* Update marker views */ + for (SPItemView *v = item->display; v != NULL; v = v->next) { + sp_shape_update_marker_view (shape, v->arenaitem); } } } - -/* A subpath begins with a moveto and ends immediately before the next moveto or NR_END. - * (`moveto' here means either NR_MOVETO or NR_MOVETO_OPEN.) I'm assuming that non-empty - * paths always begin with a moveto. - * - * The control points of the subpath are the control points of the path elements of the subpath. +/** + * Calculate the transform required to get a marker's path object in the + * right place for particular path segment on a shape. * - * As usual, the control points of a moveto or NR_LINETO are {c(3)}, and - * the control points of a NR_CURVETO are {c(1), c(2), c(3)}. - * (It follows from the definition that NR_END isn't part of a subpath.) + * \see sp_shape_marker_update_marker_view. * - * The initial control point is bpath[bi0].c(3). + * From SVG spec: + * The axes of the temporary new user coordinate system are aligned according to the orient attribute on the 'marker' + * element and the slope of the curve at the given vertex. (Note: if there is a discontinuity at a vertex, the slope + * is the average of the slopes of the two segments of the curve that join at the given vertex. If a slope cannot be + * determined, the slope is assumed to be zero.) * * Reference: http://www.w3.org/TR/SVG11/painting.html#MarkerElement, the `orient' attribute. * Reference for behaviour of zero-length segments: * http://www.w3.org/TR/SVG11/implnote.html#PathElementImplementationNotes */ - -static double const no_tangent = 128.0; /* arbitrarily-chosen value outside the range of atan2, i.e. outside of [-pi, pi]. */ - -/** - * Helper function to calculate the outgoing tangent of a path - * ( atan2(other - p0) ) - * \pre The bpath[] containing bp0 begins with a moveto. - */ -static double -outgoing_tangent(NArtBpath const *bp0) +Geom::Matrix +sp_shape_marker_get_transform(Geom::Curve const & c1, Geom::Curve const & c2) { - /* See notes in comment block above. */ - - g_assert(bp0->code != NR_END); - NR::Point const &p0 = bp0->c(3); - NR::Point other; - for (NArtBpath const *bp = bp0;;) { - ++bp; - switch (bp->code) { - case NR_LINETO: - other = bp->c(3); - if (other != p0) { - goto found; - } - break; - - case NR_CURVETO: - for (unsigned ci = 1; ci <= 3; ++ci) { - other = bp->c(ci); - if (other != p0) { - goto found; - } - } - break; - - case NR_MOVETO_OPEN: - case NR_END: - case NR_MOVETO: - bp = first_seg_in_subpath(bp0); - if (bp == bp0) { - /* Gone right around the subpath without finding any different point since the - * initial moveto. */ - return no_tangent; - } - if (bp->code != NR_MOVETO) { - /* Open subpath. */ - return no_tangent; - } - other = bp->c(3); - if (other != p0) { - goto found; - } - break; - } + Geom::Point p = c1.pointAt(1); + Geom::Curve * c1_reverse = c1.reverse(); + Geom::Point tang1 = - c1_reverse->unitTangentAt(0); + delete c1_reverse; + Geom::Point tang2 = c2.unitTangentAt(0); - if (bp == bp0) { - /* Back where we started, so zero-length subpath. */ - return no_tangent; + double const angle1 = Geom::atan2(tang1); + double const angle2 = Geom::atan2(tang2); - /* Note: this test must come after we've looked at element bp, in case bp0 is a curve: - * we must look at c(1) and c(2). (E.g. single-curve subpath.) - */ - } + double ret_angle; + ret_angle = .5 * (angle1 + angle2); + + if ( fabs( angle2 - angle1 ) > M_PI ) { + /* ret_angle is in the middle of the larger of the two sectors between angle1 and + * angle2, so flip it by 180degrees to force it to the middle of the smaller sector. + * + * (Imagine a circle with rays drawn at angle1 and angle2 from the centre of the + * circle. Those two rays divide the circle into two sectors.) + */ + ret_angle += M_PI; } -found: - return atan2( other - p0 ); + return Geom::Rotate(ret_angle) * Geom::Translate(p); } - -/** - * Helper function to calculate the incoming tangent of a path - * ( atan2(p0 - other) ) - * - * \pre The bpath[] containing bp0 begins with a moveto. - */ -static double -incoming_tangent(NArtBpath const *bp0) +Geom::Matrix +sp_shape_marker_get_transform_at_start(Geom::Curve const & c) { - /* See notes in comment block before outgoing_tangent. */ - - g_assert(bp0->code != NR_END); - NR::Point const &p0 = bp0->c(3); - NR::Point other; - for (NArtBpath const *bp = bp0;;) { - switch (bp->code) { - case NR_LINETO: - other = bp->c(3); - if (other != p0) { - goto found; - } - --bp; - break; - - case NR_CURVETO: - for (unsigned ci = 3; ci != 0; --ci) { - other = bp->c(ci); - if (other != p0) { - goto found; - } - } - --bp; - break; - - case NR_MOVETO: - case NR_MOVETO_OPEN: - other = bp->c(3); - if (other != p0) { - goto found; - } - if (bp->code != NR_MOVETO) { - /* Open subpath. */ - return no_tangent; - } - bp = last_seg_in_subpath(bp0); - break; + Geom::Point p = c.pointAt(0); + Geom::Matrix ret = Geom::Translate(p); - default: /* includes NR_END */ - g_error("Found invalid path code %u in middle of path.", bp->code); - return no_tangent; - } - - if (bp == bp0) { - /* Back where we started from: zero-length subpath. */ - return no_tangent; - } + if ( !c.isDegenerate() ) { + Geom::Point tang = c.unitTangentAt(0); + double const angle = Geom::atan2(tang); + ret = Geom::Rotate(angle) * Geom::Translate(p); + } else { + /* FIXME: the svg spec says to search for a better alternative than zero angle directionality: + * http://www.w3.org/TR/SVG11/implnote.html#PathElementImplementationNotes */ } -found: - return atan2( p0 - other ); + return ret; } - - -/** - * Calculate the transform required to get a marker's path object in the - * right place for particular path segment on a shape. You should - * call sp_shape_marker_required first to see if a marker is required - * at this point. - * - * \see sp_shape_marker_required. - * - * \param shape Shape which the marker is for. - * \param m Marker type (e.g. SP_MARKER_LOC_START) - * \param bp Path segment which the arrow is for. - * \return Transform matrix. - */ -NR::Matrix -sp_shape_marker_get_transform(SPShape const *shape, NArtBpath const *bp) +Geom::Matrix +sp_shape_marker_get_transform_at_end(Geom::Curve const & c) { - g_return_val_if_fail(( is_moveto(SP_CURVE_BPATH(shape->curve)[0].code) - && ( 0 < shape->curve->end ) - && ( SP_CURVE_BPATH(shape->curve)[shape->curve->end].code == NR_END ) ), - NR::Matrix(NR::translate(bp->c(3)))); - double const angle1 = incoming_tangent(bp); - double const angle2 = outgoing_tangent(bp); - - /* angle1 and angle2 are now each either unset (i.e. still 100 from their initialization) or in - [-pi, pi] from atan2. */ - g_assert((-3.15 < angle1 && angle1 < 3.15) || (angle1 == no_tangent)); - g_assert((-3.15 < angle2 && angle2 < 3.15) || (angle2 == no_tangent)); - - double ret_angle; - if (angle1 == no_tangent) { - /* First vertex of an open subpath. */ - ret_angle = ( angle2 == no_tangent - ? 0. - : angle2 ); - } else if (angle2 == no_tangent) { - /* Last vertex of an open subpath. */ - ret_angle = angle1; + Geom::Point p = c.pointAt(1); + Geom::Matrix ret = Geom::Translate(p); + + if ( !c.isDegenerate() ) { + Geom::Curve * c_reverse = c.reverse(); + Geom::Point tang = - c_reverse->unitTangentAt(0); + delete c_reverse; + double const angle = Geom::atan2(tang); + ret = Geom::Rotate(angle) * Geom::Translate(p); } else { - ret_angle = .5 * (angle1 + angle2); - - if ( fabs( angle2 - angle1 ) > M_PI ) { - /* ret_angle is in the middle of the larger of the two sectors between angle1 and - * angle2, so flip it by 180degrees to force it to the middle of the smaller sector. - * - * (Imagine a circle with rays drawn at angle1 and angle2 from the centre of the - * circle. Those two rays divide the circle into two sectors.) - */ - ret_angle += M_PI; - } + /* FIXME: the svg spec says to search for a better alternative than zero angle directionality: + * http://www.w3.org/TR/SVG11/implnote.html#PathElementImplementationNotes */ } - return NR::Matrix(NR::rotate(ret_angle)) * NR::translate(bp->c(3)); + return ret; } /** * Updates the instances (views) of a given marker in a shape. * Marker views have to be scaled already. The transformation * is retrieved and then shown by calling sp_marker_show_instance. + * + * TODO: correctly handle the 'marker' attribute. + * "Using the marker property from a style sheet is equivalent to using all three (start, mid, end)." + * See painting-marker-03-f.svg in SVG 1.1 Full test suite. */ static void sp_shape_update_marker_view (SPShape *shape, NRArenaItem *ai) { - SPStyle *style = ((SPObject *) shape)->style; + SPStyle *style = ((SPObject *) shape)->style; + + // position arguments to sp_marker_show_instance, basically counts the amount of markers. + int start_pos = 0; + int mid_pos = 0; + int end_pos = 0; + + Geom::PathVector const & pathv = shape->curve->get_pathvector(); + for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { + if ( shape->marker[SP_MARKER_LOC_START] ) { + Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front())); + sp_marker_show_instance ((SPMarker* ) shape->marker[SP_MARKER_LOC_START], ai, + NR_ARENA_ITEM_GET_KEY(ai) + SP_MARKER_LOC_START, start_pos, m, + style->stroke_width.computed); + start_pos++; + } - for (int i = SP_MARKER_LOC_START; i < SP_MARKER_LOC_QTY; i++) { - if (shape->marker[i] == NULL) { - continue; + if ( shape->marker[SP_MARKER_LOC_MID] && (path_it->size_default() > 1) ) { + Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve + Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve + while (curve_it2 != path_it->end_default()) + { + /* Put marker between curve_it1 and curve_it2. + * Loop to end_default (so including closing segment), because when a path is closed, + * there should be a midpoint marker between last segment and closing straight line segment + */ + Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2)); + sp_marker_show_instance ((SPMarker* ) shape->marker[SP_MARKER_LOC_MID], ai, + NR_ARENA_ITEM_GET_KEY(ai) + SP_MARKER_LOC_MID, mid_pos, m, + style->stroke_width.computed); + mid_pos++; + + ++curve_it1; + ++curve_it2; } + } - int n = 0; - - for (NArtBpath *bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) { - if (sp_shape_marker_required (shape, i, bp)) { - NR::Matrix const m(sp_shape_marker_get_transform(shape, bp)); - sp_marker_show_instance ((SPMarker* ) shape->marker[i], ai, - NR_ARENA_ITEM_GET_KEY(ai) + i, n, m, - style->stroke_width.computed); - n++; - } + if ( shape->marker[SP_MARKER_LOC_END] ) { + /* Get reference to last curve in the path. + * For moveto-only path, this returns the "closing line segment". */ + unsigned int index = path_it->size_default(); + if (index > 0) { + index--; } - } + Geom::Curve const &lastcurve = (*path_it)[index]; + + Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve); + sp_marker_show_instance ((SPMarker* ) shape->marker[SP_MARKER_LOC_END], ai, + NR_ARENA_ITEM_GET_KEY(ai) + SP_MARKER_LOC_END, end_pos, m, + style->stroke_width.computed); + end_pos++; + } + } } /** @@ -695,51 +480,107 @@ sp_shape_modified (SPObject *object, unsigned int flags) * Calculates the bounding box for item, storing it into bbox. * This also includes the bounding boxes of any markers included in the shape. */ -static void sp_shape_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags) +static void sp_shape_bbox(SPItem const *item, NRRect *bbox, Geom::Matrix const &transform, unsigned const flags) { SPShape const *shape = SP_SHAPE (item); - if (shape->curve) { + Geom::OptRect geombbox = bounds_exact_transformed(shape->curve->get_pathvector(), transform); + if (geombbox) { + NRRect cbbox; + cbbox.x0 = (*geombbox)[0][0]; + cbbox.y0 = (*geombbox)[1][0]; + cbbox.x1 = (*geombbox)[0][1]; + cbbox.y1 = (*geombbox)[1][1]; + + if ((SPItem::BBoxType) flags != SPItem::GEOMETRIC_BBOX) { + + SPStyle* style=SP_OBJECT_STYLE (item); + if (!style->stroke.isNone()) { + double const scale = transform.descrim(); + if ( fabs(style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord + double const width = MAX(0.125, style->stroke_width.computed * scale); + if ( fabs(cbbox.x1-cbbox.x0) > -0.00001 && fabs(cbbox.y1-cbbox.y0) > -0.00001 ) { + cbbox.x0-=0.5*width; + cbbox.x1+=0.5*width; + cbbox.y0-=0.5*width; + cbbox.y1+=0.5*width; + } + } + } - NRRect cbbox; - NRBPath bp; + // Union with bboxes of the markers, if any + if (sp_shape_has_markers (shape)) { + /* TODO: make code prettier: lots of variables can be taken out of the loop! */ + Geom::PathVector const & pathv = shape->curve->get_pathvector(); + for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { + if ( shape->marker[SP_MARKER_LOC_START] ) { + SPMarker* marker = SP_MARKER (shape->marker[SP_MARKER_LOC_START]); + SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[SP_MARKER_LOC_START])); - bp.path = SP_CURVE_BPATH (shape->curve); + Geom::Matrix tr(sp_shape_marker_get_transform_at_start(path_it->front())); - cbbox.x0 = cbbox.y0 = NR_HUGE; - cbbox.x1 = cbbox.y1 = -NR_HUGE; + if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { + tr = Geom::Scale(style->stroke_width.computed) * tr; + } - nr_path_matrix_bbox_union(&bp, transform, &cbbox); + // total marker transform + tr = marker_item->transform * marker->c2p * tr * transform; - if ((SPItem::BBoxType) flags != SPItem::GEOMETRIC_BBOX) { - - SPStyle* style=SP_OBJECT_STYLE (item); - if (!style->stroke.isNone()) { - double const scale = expansion(transform); - if ( fabs(style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord - double const width = MAX(0.125, style->stroke_width.computed * scale); - if ( fabs(cbbox.x1-cbbox.x0) > -0.00001 && fabs(cbbox.y1-cbbox.y0) > -0.00001 ) { - cbbox.x0-=0.5*width; - cbbox.x1+=0.5*width; - cbbox.y0-=0.5*width; - cbbox.y1+=0.5*width; - } - } - } + // get bbox of the marker with that transform + NRRect marker_bbox; + sp_item_invoke_bbox (marker_item, &marker_bbox, from_2geom(tr), true); + // union it with the shape bbox + nr_rect_d_union (&cbbox, &cbbox, &marker_bbox); + } + + if ( shape->marker[SP_MARKER_LOC_MID] && (path_it->size_default() > 1) ) { + Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve + Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve + while (curve_it2 != path_it->end_default()) + { + /* Put marker between curve_it1 and curve_it2. + * Loop to end_default (so including closing segment), because when a path is closed, + * there should be a midpoint marker between last segment and closing straight line segment */ + + SPMarker* marker = SP_MARKER (shape->marker[SP_MARKER_LOC_MID]); + SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[SP_MARKER_LOC_MID])); + + Geom::Matrix tr(sp_shape_marker_get_transform(*curve_it1, *curve_it2)); + + if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { + tr = Geom::Scale(style->stroke_width.computed) * tr; + } - // Union with bboxes of the markers, if any - if (sp_shape_has_markers (shape)) { - for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) { - for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) { - if (sp_shape_marker_required (shape, m, bp)) { + // total marker transform + tr = marker_item->transform * marker->c2p * tr * transform; - SPMarker* marker = SP_MARKER (shape->marker[m]); - SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m])); + // get bbox of the marker with that transform + NRRect marker_bbox; + sp_item_invoke_bbox (marker_item, &marker_bbox, from_2geom(tr), true); + // union it with the shape bbox + nr_rect_d_union (&cbbox, &cbbox, &marker_bbox); - NR::Matrix tr(sp_shape_marker_get_transform(shape, bp)); + ++curve_it1; + ++curve_it2; + } + } + + if ( shape->marker[SP_MARKER_LOC_END] ) { + SPMarker* marker = SP_MARKER (shape->marker[SP_MARKER_LOC_END]); + SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[SP_MARKER_LOC_END])); + + /* Get reference to last curve in the path. + * For moveto-only path, this returns the "closing line segment". */ + unsigned int index = path_it->size_default(); + if (index > 0) { + index--; + } + Geom::Curve const &lastcurve = (*path_it)[index]; + + Geom::Matrix tr = sp_shape_marker_get_transform_at_end(lastcurve); if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { - tr = NR::scale(style->stroke_width.computed) * tr; + tr = Geom::Scale(style->stroke_width.computed) * tr; } // total marker transform @@ -754,10 +595,10 @@ static void sp_shape_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &tr } } } - } - // copy our bbox to the variable we're given - *bbox = cbbox; + // copy our bbox to the variable we're given + *bbox = cbbox; + } } } @@ -776,7 +617,8 @@ sp_shape_print (SPItem *item, SPPrintContext *ctx) if (!shape->curve) return; - gint add_comments = prefs_get_int_attribute_limited ("printing.debug", "add-label-comments", 0, 0, 1); + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + gint add_comments = prefs->getBool("/printing/debug/add-label-comments"); if (add_comments) { gchar * comment = g_strdup_printf("begin '%s'", SP_OBJECT(item)->defaultLabel()); @@ -784,51 +626,102 @@ sp_shape_print (SPItem *item, SPPrintContext *ctx) g_free(comment); } - /* fixme: Think (Lauris) */ - sp_item_invoke_bbox(item, &pbox, NR::identity(), TRUE); - dbox.x0 = 0.0; - dbox.y0 = 0.0; - dbox.x1 = sp_document_width (SP_OBJECT_DOCUMENT (item)); - dbox.y1 = sp_document_height (SP_OBJECT_DOCUMENT (item)); - sp_item_bbox_desktop (item, &bbox); - NR::Matrix const i2d = sp_item_i2d_affine(item); + /* fixme: Think (Lauris) */ + sp_item_invoke_bbox(item, &pbox, NR::identity(), TRUE); + dbox.x0 = 0.0; + dbox.y0 = 0.0; + dbox.x1 = sp_document_width (SP_OBJECT_DOCUMENT (item)); + dbox.y1 = sp_document_height (SP_OBJECT_DOCUMENT (item)); + sp_item_bbox_desktop (item, &bbox); + Geom::Matrix const i2d(sp_item_i2d_affine(item)); SPStyle* style = SP_OBJECT_STYLE (item); - if (!style->fill.isNone()) { - NRBPath bp; - bp.path = SP_CURVE_BPATH(shape->curve); - sp_print_fill (ctx, &bp, i2d, style, &pbox, &dbox, &bbox); - } + if (!style->fill.isNone()) { + sp_print_fill (ctx, shape->curve->get_pathvector(), &i2d, style, &pbox, &dbox, &bbox); + } - if (!style->stroke.isNone()) { - NRBPath bp; - bp.path = SP_CURVE_BPATH(shape->curve); - sp_print_stroke (ctx, &bp, i2d, style, &pbox, &dbox, &bbox); - } + if (!style->stroke.isNone()) { + sp_print_stroke (ctx, shape->curve->get_pathvector(), &i2d, style, &pbox, &dbox, &bbox); + } - for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) { - for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) { - if (sp_shape_marker_required (shape, m, bp)) { + /* TODO: make code prettier: lots of variables can be taken out of the loop! */ + Geom::PathVector const & pathv = shape->curve->get_pathvector(); + for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { + if ( shape->marker[SP_MARKER_LOC_START] ) { + SPMarker* marker = SP_MARKER (shape->marker[SP_MARKER_LOC_START]); + SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[SP_MARKER_LOC_START])); - SPMarker* marker = SP_MARKER (shape->marker[m]); - SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m])); + Geom::Matrix tr(sp_shape_marker_get_transform_at_start(path_it->front())); - NR::Matrix tr(sp_shape_marker_get_transform(shape, bp)); + if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { + tr = Geom::Scale(style->stroke_width.computed) * tr; + } - if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { - tr = NR::scale(style->stroke_width.computed) * tr; - } + tr = marker_item->transform * marker->c2p * tr; + + NR::Matrix old_tr = marker_item->transform; + marker_item->transform = tr; + sp_item_invoke_print (marker_item, ctx); + marker_item->transform = old_tr; + } - tr = marker_item->transform * marker->c2p * tr; + if ( shape->marker[SP_MARKER_LOC_MID] && (path_it->size_default() > 1) ) { + Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve + Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve + while (curve_it2 != path_it->end_default()) + { + /* Put marker between curve_it1 and curve_it2. + * Loop to end_default (so including closing segment), because when a path is closed, + * there should be a midpoint marker between last segment and closing straight line segment */ - NR::Matrix old_tr = marker_item->transform; - marker_item->transform = tr; - sp_item_invoke_print (marker_item, ctx); - marker_item->transform = old_tr; + SPMarker* marker = SP_MARKER (shape->marker[SP_MARKER_LOC_MID]); + SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[SP_MARKER_LOC_MID])); + + Geom::Matrix tr(sp_shape_marker_get_transform(*curve_it1, *curve_it2)); + + if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { + tr = Geom::Scale(style->stroke_width.computed) * tr; } + + tr = marker_item->transform * marker->c2p * tr; + + NR::Matrix old_tr = marker_item->transform; + marker_item->transform = tr; + sp_item_invoke_print (marker_item, ctx); + marker_item->transform = old_tr; + + ++curve_it1; + ++curve_it2; + } + } + + if ( shape->marker[SP_MARKER_LOC_END] ) { + SPMarker* marker = SP_MARKER (shape->marker[SP_MARKER_LOC_END]); + SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[SP_MARKER_LOC_END])); + + /* Get reference to last curve in the path. + * For moveto-only path, this returns the "closing line segment". */ + unsigned int index = path_it->size_default(); + if (index > 0) { + index--; + } + Geom::Curve const &lastcurve = (*path_it)[index]; + + Geom::Matrix tr = sp_shape_marker_get_transform_at_end(lastcurve); + + if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { + tr = Geom::Scale(style->stroke_width.computed) * tr; } + + tr = marker_item->transform * marker->c2p * tr; + + NR::Matrix old_tr = marker_item->transform; + marker_item->transform = tr; + sp_item_invoke_print (marker_item, ctx); + marker_item->transform = old_tr; } + } if (add_comments) { gchar * comment = g_strdup_printf("end '%s'", @@ -844,39 +737,47 @@ sp_shape_print (SPItem *item, SPPrintContext *ctx) static NRArenaItem * sp_shape_show (SPItem *item, NRArena *arena, unsigned int /*key*/, unsigned int /*flags*/) { - SPObject *object = SP_OBJECT(item); - SPShape *shape = SP_SHAPE(item); + SPObject *object = SP_OBJECT(item); + SPShape *shape = SP_SHAPE(item); + + NRArenaItem *arenaitem = NRArenaShape::create(arena); + NRArenaShape * const s = NR_ARENA_SHAPE(arenaitem); + nr_arena_shape_set_style(s, object->style); + nr_arena_shape_set_path(s, shape->curve, false); + Geom::OptRect paintbox = item->getBounds(Geom::identity()); + if (paintbox) { + s->setPaintBox(*paintbox); + } - NRArenaItem *arenaitem = NRArenaShape::create(arena); - NRArenaShape * const s = NR_ARENA_SHAPE(arenaitem); - nr_arena_shape_set_style(s, object->style); - nr_arena_shape_set_path(s, shape->curve, false); - NR::Maybe paintbox = item->getBounds(NR::identity()); - if (paintbox) { - s->setPaintBox(*paintbox); - } + /* This stanza checks that an object's marker style agrees with + * the marker objects it has allocated. sp_shape_set_marker ensures + * that the appropriate marker objects are present (or absent) to + * match the style. + */ + for (int i = 0 ; i < SP_MARKER_LOC_QTY ; i++) { + sp_shape_set_marker (object, i, object->style->marker[i].value); + } - if (sp_shape_has_markers (shape)) { + if (sp_shape_has_markers (shape)) { - /* Dimension the marker views */ - if (!arenaitem->key) { - NR_ARENA_ITEM_SET_KEY (arenaitem, sp_item_display_key_new (SP_MARKER_LOC_QTY)); - } + /* provide key and dimension the marker views */ + if (!arenaitem->key) { + NR_ARENA_ITEM_SET_KEY (arenaitem, sp_item_display_key_new (SP_MARKER_LOC_QTY)); + } - for (int i = 0; i < SP_MARKER_LOC_QTY; i++) { - if (shape->marker[i]) { - sp_marker_show_dimension ((SPMarker *) shape->marker[i], - NR_ARENA_ITEM_GET_KEY (arenaitem) + i - SP_MARKER_LOC, - sp_shape_number_of_markers (shape, i)); - } + for (int i = 0; i < SP_MARKER_LOC_QTY; i++) { + if (shape->marker[i]) { + sp_marker_show_dimension ((SPMarker *) shape->marker[i], + NR_ARENA_ITEM_GET_KEY (arenaitem) + i - SP_MARKER_LOC, + sp_shape_number_of_markers (shape, i)); } + } + /* Update marker views */ + sp_shape_update_marker_view (shape, arenaitem); + } - /* Update marker views */ - sp_shape_update_marker_view (shape, arenaitem); - } - - return arenaitem; + return arenaitem; } /** @@ -935,14 +836,44 @@ sp_shape_has_markers (SPShape const *shape) int sp_shape_number_of_markers (SPShape *shape, int type) { - int n = 0; - for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) { - if (sp_shape_marker_required (shape, type, bp)) { - n++; + Geom::PathVector const & pathv = shape->curve->get_pathvector(); + + switch(type) { + case SP_MARKER_LOC_START: + return shape->marker[SP_MARKER_LOC_START] ? pathv.size() : 0; + + case SP_MARKER_LOC_MID: + { + if ( shape->marker[SP_MARKER_LOC_MID] ) { + guint n = 0; + for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { + n += path_it->size(); + n += path_it->closed() ? 1 : 0; + } + return n; + } else { + return 0; + } + } + + case SP_MARKER_LOC_END: + { + if ( shape->marker[SP_MARKER_LOC_END] ) { + guint n = 0; + for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { + if (!path_it->empty()) { + n++; + } + } + return n; + } else { + return 0; + } } - } - return n; + default: + return 0; + } } /** @@ -968,7 +899,8 @@ sp_shape_marker_release (SPObject *marker, SPShape *shape) /* nr_arena_item_set_mask (v->arenaitem, NULL); */ } /* Detach marker */ - sp_signal_disconnect_by_data (shape->marker[i], item); + shape->release_connect[i].disconnect(); + shape->modified_connect[i].disconnect(); shape->marker[i] = sp_object_hunref (shape->marker[i], item); } } @@ -1057,13 +989,13 @@ void sp_shape_set_curve (SPShape *shape, SPCurve *curve, unsigned int owner) { if (shape->curve) { - shape->curve = sp_curve_unref (shape->curve); + shape->curve = shape->curve->unref(); } if (curve) { if (owner) { - shape->curve = sp_curve_ref (curve); + shape->curve = curve->ref(); } else { - shape->curve = sp_curve_copy (curve); + shape->curve = curve->copy(); } } SP_OBJECT(shape)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); @@ -1076,34 +1008,33 @@ SPCurve * sp_shape_get_curve (SPShape *shape) { if (shape->curve) { - return sp_curve_copy (shape->curve); + return shape->curve->copy(); } return NULL; } -/* NOT FOR GENERAL PUBLIC UNTIL SORTED OUT (Lauris) */ +/** + * Same as sp_shape_set_curve but without updating the display + */ void sp_shape_set_curve_insync (SPShape *shape, SPCurve *curve, unsigned int owner) { if (shape->curve) { - shape->curve = sp_curve_unref (shape->curve); + shape->curve = shape->curve->unref(); } if (curve) { if (owner) { - shape->curve = sp_curve_ref (curve); + shape->curve = curve->ref(); } else { - shape->curve = sp_curve_copy (curve); + shape->curve = curve->copy(); } } } /** * Return all nodes in a path that are to be considered for snapping - * - * If the attribute "sodipodi:nodetypes" has been set, then this will be used - * to discard any node on a smooth part of the path, i.e. only cusps will be returned */ -static void sp_shape_snappoints(SPItem const *item, SnapPointsIter p) +static void sp_shape_snappoints(SPItem const *item, SnapPointsIter p, Inkscape::SnapPreferences const *snapprefs) { g_assert(item != NULL); g_assert(SP_IS_SHAPE(item)); @@ -1113,128 +1044,35 @@ static void sp_shape_snappoints(SPItem const *item, SnapPointsIter p) return; } - NR::Matrix const i2d (sp_item_i2d_affine (item)); - - /* Use the end points of each segment of the path */ - NArtBpath const *bp = SP_CURVE_BPATH(shape->curve); - - gchar const *nodetypes = item->repr->attribute("sodipodi:nodetypes"); - int nodetype_index = 0; - - bool nodetypes_out_of_date = strlen(nodetypes) != uint(shape->curve->end); - // nodetypes might still be empty, e.g. for pure SVG files - // or it might not have been updated yet - - if (bp->code == NR_MOVETO) { // Indicates the start of a closed subpath, see nr-path-code.h - bp++; //The first point of a closed path is coincident with the end point. Skip the first point as we need only one - nodetype_index++; - } - - while (bp->code != NR_END) { - if (nodetypes_out_of_date || nodetypes[nodetype_index] == 'c') { - // if nodetypes is out of date then return any node for snapping - // otherwise only return cusps (i.e . non-smooth nodes) - *p = bp->c(3) * i2d; - } - bp++; - nodetype_index++; - } -} - - -LivePathEffectObject * -sp_shape_get_livepatheffectobject(SPShape *shape) { - if (!shape) return NULL; - - if (sp_shape_has_path_effect(shape)) { - return shape->path_effect_ref->lpeobject; - } else { - return NULL; - } -} - -/** - * Calls any registered handlers for the update_patheffect action - */ -void -sp_shape_update_patheffect (SPShape *shape, bool write) -{ -#ifdef SHAPE_VERBOSE - g_message("sp_shape_update_patheffect: %p\n", shape); -#endif - g_return_if_fail (shape != NULL); - g_return_if_fail (SP_IS_SHAPE (shape)); - - if (SP_SHAPE_CLASS (G_OBJECT_GET_CLASS (shape))->update_patheffect) { - SP_SHAPE_CLASS (G_OBJECT_GET_CLASS (shape))->update_patheffect (shape, write); - } -} - -void sp_shape_perform_path_effect(SPCurve *curve, SPShape *shape) { - if (!shape) return; - if (!curve) return; - - LivePathEffectObject *lpeobj = sp_shape_get_livepatheffectobject(shape); - if (lpeobj && lpeobj->lpe) { - lpeobj->lpe->doEffect(curve); - } -} - -/** - * Gets called when (re)attached to another lpeobject. - */ -static void -lpeobject_ref_changed(SPObject *old_ref, SPObject *ref, SPShape *shape) -{ - if (old_ref) { - sp_signal_disconnect_by_data(old_ref, shape); - } - if ( IS_LIVEPATHEFFECT(ref) && ref != shape ) - { - shape->lpe_modified_connection.disconnect(); - shape->lpe_modified_connection = ref->connectModified(sigc::bind(sigc::ptr_fun(&lpeobject_ref_modified), shape)); - lpeobject_ref_modified(ref, 0, shape); - } -} + Geom::PathVector const &pathv = shape->curve->get_pathvector(); + if (pathv.empty()) + return; -/** - * Gets called when lpeobject repr contents change: i.e. parameter change. - */ -static void -lpeobject_ref_modified(SPObject */*href*/, guint /*flags*/, SPShape *shape) -{ - sp_shape_update_patheffect (shape, true); -} + Geom::Matrix const i2d (sp_item_i2d_affine (item)); -void sp_shape_set_path_effect(SPShape *shape, gchar *value) -{ - if (!value) { - sp_shape_remove_path_effect(shape); - } else { - SP_OBJECT_REPR(shape)->setAttribute("inkscape:path-effect", value); - } -} + for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { + *p = from_2geom(path_it->initialPoint() * i2d); -void sp_shape_remove_path_effect(SPShape *shape) -{ - Inkscape::XML::Node *repr = SP_OBJECT_REPR(shape); - repr->setAttribute("inkscape:path-effect", NULL); - if (SP_IS_PATH(shape)) { - repr->setAttribute("d", repr->attribute("inkscape:original-d")); - repr->setAttribute("inkscape:original-d", NULL); - } -} + Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve + Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve + while (curve_it2 != path_it->end_closed()) + { + /* Test whether to add the node between curve_it1 and curve_it2. + * Loop to end_closed (so always including closing segment), the last node to be added + * is the node between the closing segment and the segment before that one. Regardless + * of the path being closed. If the path is closed, the final point was already added by + * adding the initial point. */ -bool sp_shape_has_path_effect(SPShape *shape) -{ - return (shape->path_effect_href != NULL); -} + Geom::NodeType nodetype = Geom::get_nodetype(*curve_it1, *curve_it2); -void sp_shape_edit_next_param_oncanvas(SPShape *shape, SPDesktop *dt) -{ - LivePathEffectObject *lpeobj = sp_shape_get_livepatheffectobject(shape); - if (lpeobj && lpeobj->lpe) { - lpeobj->lpe->editNextParamOncanvas(SP_ITEM(shape), dt); + // Depending on the snapping preferences, either add only cusp nodes, or add add both cusp and smooths nodes + if (snapprefs->getSnapSmoothNodes() || nodetype == Geom::NODE_NONE || nodetype == Geom::NODE_CUSP) { + *p = from_2geom(curve_it1->finalPoint() * i2d); + } + + ++curve_it1; + ++curve_it2; + } } }