/* * On-canvas gradient dragging * * Authors: * bulia byak <buliabyak@users.sf.net> * Johan Engelen <j.b.c.engelen@ewi.utwente.nl> * Jon A. Cruz <jon@joncruz.org> * * Copyright (C) 2007 Johan Engelen * Copyright (C) 2005,2010 Authors * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <glibmm/i18n.h> #include <cstring> #include <string> #include "desktop-handles.h" #include "selection.h" #include "desktop.h" #include "desktop-style.h" #include "document.h" #include "display/sp-ctrlline.h" #include "display/sp-canvas-util.h" #include "xml/repr.h" #include "svg/css-ostringstream.h" #include "svg/svg.h" #include "libnr/nr-point-fns.h" #include "preferences.h" #include "sp-item.h" #include "style.h" #include "knot.h" #include "sp-linear-gradient.h" #include "sp-radial-gradient.h" #include "gradient-chemistry.h" #include "gradient-drag.h" #include "sp-stop.h" #include "snap.h" #include "sp-namedview.h" #include "selection-chemistry.h" #define GR_KNOT_COLOR_NORMAL 0xffffff00 #define GR_KNOT_COLOR_MOUSEOVER 0xff000000 #define GR_KNOT_COLOR_SELECTED 0x0000ff00 #define GR_LINE_COLOR_FILL 0x0000ff7f #define GR_LINE_COLOR_STROKE 0x9999007f // screen pixels between knots when they snap: #define SNAP_DIST 5 // absolute distance between gradient points for them to become a single dragger when the drag is created: #define MERGE_DIST 0.1 // knot shapes corresponding to GrPointType enum SPKnotShapeType gr_knot_shapes [] = { SP_KNOT_SHAPE_SQUARE, //POINT_LG_BEGIN SP_KNOT_SHAPE_CIRCLE, //POINT_LG_END SP_KNOT_SHAPE_DIAMOND, //POINT_LG_MID SP_KNOT_SHAPE_SQUARE, // POINT_RG_CENTER SP_KNOT_SHAPE_CIRCLE, // POINT_RG_R1 SP_KNOT_SHAPE_CIRCLE, // POINT_RG_R2 SP_KNOT_SHAPE_CROSS, // POINT_RG_FOCUS SP_KNOT_SHAPE_DIAMOND, //POINT_RG_MID1 SP_KNOT_SHAPE_DIAMOND //POINT_RG_MID2 }; const gchar *gr_knot_descr [] = { N_("Linear gradient <b>start</b>"), //POINT_LG_BEGIN N_("Linear gradient <b>end</b>"), N_("Linear gradient <b>mid stop</b>"), N_("Radial gradient <b>center</b>"), N_("Radial gradient <b>radius</b>"), N_("Radial gradient <b>radius</b>"), N_("Radial gradient <b>focus</b>"), // POINT_RG_FOCUS N_("Radial gradient <b>mid stop</b>"), N_("Radial gradient <b>mid stop</b>") }; static void gr_drag_sel_changed(Inkscape::Selection */*selection*/, gpointer data) { GrDrag *drag = (GrDrag *) data; drag->updateDraggers (); drag->updateLines (); drag->updateLevels (); } static void gr_drag_sel_modified (Inkscape::Selection */*selection*/, guint /*flags*/, gpointer data) { GrDrag *drag = (GrDrag *) data; if (drag->local_change) { drag->local_change = false; } else { drag->updateDraggers (); } drag->updateLines (); drag->updateLevels (); } /** When a _query_style_signal is received, check that \a property requests fill/stroke/opacity (otherwise skip), and fill the \a style with the averaged color of all draggables of the selected dragger, if any. */ int gr_drag_style_query (SPStyle *style, int property, gpointer data) { GrDrag *drag = (GrDrag *) data; if (property != QUERY_STYLE_PROPERTY_FILL && property != QUERY_STYLE_PROPERTY_STROKE && property != QUERY_STYLE_PROPERTY_MASTEROPACITY) { return QUERY_STYLE_NOTHING; } if (!drag->selected) { return QUERY_STYLE_NOTHING; } else { int ret = QUERY_STYLE_NOTHING; float cf[4]; cf[0] = cf[1] = cf[2] = cf[3] = 0; int count = 0; for (GList *i = drag->selected; i != NULL; i = i->next) { // for all selected draggers GrDragger *d = (GrDragger *) i->data; for (GSList const* j = d->draggables; j != NULL; j = j->next) { // for all draggables of dragger GrDraggable *draggable = (GrDraggable *) j->data; if (ret == QUERY_STYLE_NOTHING) { ret = QUERY_STYLE_SINGLE; } else if (ret == QUERY_STYLE_SINGLE) { ret = QUERY_STYLE_MULTIPLE_AVERAGED; } guint32 c = sp_item_gradient_stop_query_style (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke); cf[0] += SP_RGBA32_R_F (c); cf[1] += SP_RGBA32_G_F (c); cf[2] += SP_RGBA32_B_F (c); cf[3] += SP_RGBA32_A_F (c); count ++; } } if (count) { cf[0] /= count; cf[1] /= count; cf[2] /= count; cf[3] /= count; // set both fill and stroke with our stop-color and stop-opacity style->fill.clear(); style->fill.setColor( cf[0], cf[1], cf[2] ); style->fill.set = TRUE; style->stroke.clear(); style->stroke.setColor( cf[0], cf[1], cf[2] ); style->stroke.set = TRUE; style->fill_opacity.value = SP_SCALE24_FROM_FLOAT (1.0); style->fill_opacity.set = TRUE; style->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (1.0); style->stroke_opacity.set = TRUE; style->opacity.value = SP_SCALE24_FROM_FLOAT (cf[3]); style->opacity.set = TRUE; } return ret; } } Glib::ustring GrDrag::makeStopSafeColor( gchar const *str, bool &isNull ) { Glib::ustring colorStr; if ( str ) { isNull = false; colorStr = str; Glib::ustring::size_type pos = colorStr.find("url(#"); if ( pos != Glib::ustring::npos ) { Glib::ustring targetName = colorStr.substr(pos + 5, colorStr.length() - 6); const GSList *gradients = sp_document_get_resource_list(desktop->doc(), "gradient"); for (const GSList *item = gradients; item; item = item->next) { SPGradient* grad = SP_GRADIENT(item->data); if ( targetName == grad->getId() ) { SPGradient *vect = grad->getVector(); SPStop *firstStop = (vect) ? vect->getFirstStop() : grad->getFirstStop(); if (firstStop) { Glib::ustring stopColorStr; if (firstStop->currentColor) { stopColorStr = sp_object_get_style_property(firstStop, "color", NULL); } else { stopColorStr = firstStop->specified_color.toString(); } if ( !stopColorStr.empty() ) { colorStr = stopColorStr; } } break; } } } } else { isNull = true; } return colorStr; } bool GrDrag::styleSet( const SPCSSAttr *css ) { if (!selected) { return false; } SPCSSAttr *stop = sp_repr_css_attr_new(); // See if the css contains interesting properties, and if so, translate them into the format // acceptable for gradient stops // any of color properties, in order of increasing priority: if (css->attribute("flood-color")) { sp_repr_css_set_property (stop, "stop-color", css->attribute("flood-color")); } if (css->attribute("lighting-color")) { sp_repr_css_set_property (stop, "stop-color", css->attribute("lighting-color")); } if (css->attribute("color")) { sp_repr_css_set_property (stop, "stop-color", css->attribute("color")); } if (css->attribute("stroke") && strcmp(css->attribute("stroke"), "none")) { sp_repr_css_set_property (stop, "stop-color", css->attribute("stroke")); } if (css->attribute("fill") && strcmp(css->attribute("fill"), "none")) { sp_repr_css_set_property (stop, "stop-color", css->attribute("fill")); } if (css->attribute("stop-color")) { sp_repr_css_set_property (stop, "stop-color", css->attribute("stop-color")); } // Make sure the style is allowed for gradient stops. if ( !sp_repr_css_property_is_unset( stop, "stop-color") ) { bool stopIsNull = false; Glib::ustring tmp = makeStopSafeColor( sp_repr_css_property( stop, "stop-color", "" ), stopIsNull ); if ( !stopIsNull && !tmp.empty() ) { sp_repr_css_set_property( stop, "stop-color", tmp.c_str() ); } } if (css->attribute("stop-opacity")) { // direct setting of stop-opacity has priority sp_repr_css_set_property(stop, "stop-opacity", css->attribute("stop-opacity")); } else { // multiply all opacity properties: gdouble accumulated = 1.0; accumulated *= sp_svg_read_percentage(css->attribute("flood-opacity"), 1.0); accumulated *= sp_svg_read_percentage(css->attribute("opacity"), 1.0); accumulated *= sp_svg_read_percentage(css->attribute("stroke-opacity"), 1.0); accumulated *= sp_svg_read_percentage(css->attribute("fill-opacity"), 1.0); Inkscape::CSSOStringStream os; os << accumulated; sp_repr_css_set_property(stop, "stop-opacity", os.str().c_str()); if ((css->attribute("fill") && !css->attribute("stroke") && !strcmp(css->attribute("fill"), "none")) || (css->attribute("stroke") && !css->attribute("fill") && !strcmp(css->attribute("stroke"), "none"))) { sp_repr_css_set_property(stop, "stop-opacity", "0"); // if a single fill/stroke property is set to none, don't change color, set opacity to 0 } } if (!stop->attributeList()) { // nothing for us here, pass it on sp_repr_css_attr_unref(stop); return false; } for (GList const* sel = selected; sel != NULL; sel = sel->next) { // for all selected draggers GrDragger* dragger = reinterpret_cast<GrDragger*>(sel->data); for (GSList const* i = dragger->draggables; i != NULL; i = i->next) { // for all draggables of dragger GrDraggable *draggable = reinterpret_cast<GrDraggable *>(i->data); local_change = true; sp_item_gradient_stop_set_style(draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke, stop); } } //sp_repr_css_print(stop); sp_repr_css_attr_unref(stop); return true; } guint32 GrDrag::getColor() { if (!selected) return 0; float cf[4]; cf[0] = cf[1] = cf[2] = cf[3] = 0; int count = 0; for (GList *i = selected; i != NULL; i = i->next) { // for all selected draggers GrDragger *d = (GrDragger *) i->data; for (GSList const* j = d->draggables; j != NULL; j = j->next) { // for all draggables of dragger GrDraggable *draggable = (GrDraggable *) j->data; guint32 c = sp_item_gradient_stop_query_style (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke); cf[0] += SP_RGBA32_R_F (c); cf[1] += SP_RGBA32_G_F (c); cf[2] += SP_RGBA32_B_F (c); cf[3] += SP_RGBA32_A_F (c); count ++; } } if (count) { cf[0] /= count; cf[1] /= count; cf[2] /= count; cf[3] /= count; } return SP_RGBA32_F_COMPOSE(cf[0], cf[1], cf[2], cf[3]); } SPStop * GrDrag::addStopNearPoint (SPItem *item, Geom::Point mouse_p, double tolerance) { gfloat offset; // type of SPStop.offset = gfloat SPGradient *gradient; bool fill_or_stroke = true; bool r1_knot = false; bool addknot = false; do { gradient = sp_item_gradient (item, fill_or_stroke); if (SP_IS_LINEARGRADIENT(gradient)) { Geom::Point begin = sp_item_gradient_get_coords(item, POINT_LG_BEGIN, 0, fill_or_stroke); Geom::Point end = sp_item_gradient_get_coords(item, POINT_LG_END, 0, fill_or_stroke); Geom::Point nearest = snap_vector_midpoint (mouse_p, begin, end, 0); double dist_screen = Geom::L2 (mouse_p - nearest); if ( dist_screen < tolerance ) { // add the knot offset = get_offset_between_points(nearest, begin, end); addknot = true; break; // break out of the while loop: add only one knot } } else if (SP_IS_RADIALGRADIENT(gradient)) { Geom::Point begin = sp_item_gradient_get_coords(item, POINT_RG_CENTER, 0, fill_or_stroke); Geom::Point end = sp_item_gradient_get_coords(item, POINT_RG_R1, 0, fill_or_stroke); Geom::Point nearest = snap_vector_midpoint (mouse_p, begin, end, 0); double dist_screen = Geom::L2 (mouse_p - nearest); if ( dist_screen < tolerance ) { offset = get_offset_between_points(nearest, begin, end); addknot = true; r1_knot = true; break; // break out of the while loop: add only one knot } end = sp_item_gradient_get_coords(item, POINT_RG_R2, 0, fill_or_stroke); nearest = snap_vector_midpoint (mouse_p, begin, end, 0); dist_screen = Geom::L2 (mouse_p - nearest); if ( dist_screen < tolerance ) { offset = get_offset_between_points(nearest, begin, end); addknot = true; r1_knot = false; break; // break out of the while loop: add only one knot } } fill_or_stroke = !fill_or_stroke; } while (!fill_or_stroke && !addknot) ; if (addknot) { SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false); SPStop* prev_stop = vector->getFirstStop(); SPStop* next_stop = prev_stop->getNextStop(); guint i = 1; while ( (next_stop) && (next_stop->offset < offset) ) { prev_stop = next_stop; next_stop = next_stop->getNextStop(); i++; } if (!next_stop) { // logical error: the endstop should have offset 1 and should always be more than this offset here return NULL; } SPStop *newstop = sp_vector_add_stop (vector, prev_stop, next_stop, offset); gradient->ensureVector(); updateDraggers(); return newstop; } return NULL; } bool GrDrag::dropColor(SPItem */*item*/, gchar const *c, Geom::Point p) { // Note: not sure if a null pointer can come in for the style, but handle that just in case bool stopIsNull = false; Glib::ustring toUse = makeStopSafeColor( c, stopIsNull ); // first, see if we can drop onto one of the existing draggers for (GList *i = draggers; i != NULL; i = i->next) { // for all draggables of dragger GrDragger *d = (GrDragger *) i->data; if (Geom::L2(p - d->point)*desktop->current_zoom() < 5) { SPCSSAttr *stop = sp_repr_css_attr_new (); sp_repr_css_set_property( stop, "stop-color", stopIsNull ? 0 : toUse.c_str() ); sp_repr_css_set_property( stop, "stop-opacity", "1" ); for (GSList *j = d->draggables; j != NULL; j = j->next) { // for all draggables of dragger GrDraggable *draggable = (GrDraggable *) j->data; local_change = true; sp_item_gradient_stop_set_style (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke, stop); } sp_repr_css_attr_unref(stop); return true; } } // now see if we're over line and create a new stop bool over_line = false; SPCtrlLine *line = NULL; if (lines) { for (GSList *l = lines; (l != NULL) && (!over_line); l = l->next) { line = (SPCtrlLine*) l->data; Geom::Point nearest = snap_vector_midpoint (p, line->s, line->e, 0); double dist_screen = Geom::L2 (p - nearest) * desktop->current_zoom(); if (line->item && dist_screen < 5) { SPStop *stop = addStopNearPoint (line->item, p, 5/desktop->current_zoom()); if (stop) { SPCSSAttr *css = sp_repr_css_attr_new (); sp_repr_css_set_property( css, "stop-color", stopIsNull ? 0 : toUse.c_str() ); sp_repr_css_set_property( css, "stop-opacity", "1" ); sp_repr_css_change (SP_OBJECT_REPR (stop), css, "style"); return true; } } } } return false; } GrDrag::GrDrag(SPDesktop *desktop) : selected(0), keep_selection(false), local_change(false), desktop(desktop), hor_levels(), vert_levels(), draggers(0), lines(0), selection(sp_desktop_selection(desktop)), sel_changed_connection(), sel_modified_connection(), style_set_connection(), style_query_connection() { sel_changed_connection = selection->connectChanged( sigc::bind( sigc::ptr_fun(&gr_drag_sel_changed), (gpointer)this ) ); sel_modified_connection = selection->connectModified( sigc::bind( sigc::ptr_fun(&gr_drag_sel_modified), (gpointer)this ) ); style_set_connection = desktop->connectSetStyle( sigc::mem_fun(*this, &GrDrag::styleSet) ); style_query_connection = desktop->connectQueryStyle( sigc::bind( sigc::ptr_fun(&gr_drag_style_query), (gpointer)this ) ); updateDraggers(); updateLines(); updateLevels(); if (desktop->gr_item) { setSelected(getDraggerFor(desktop->gr_item, desktop->gr_point_type, desktop->gr_point_i, desktop->gr_fill_or_stroke)); } } GrDrag::~GrDrag() { this->sel_changed_connection.disconnect(); this->sel_modified_connection.disconnect(); this->style_set_connection.disconnect(); this->style_query_connection.disconnect(); if (this->selected) { GrDraggable *draggable = (GrDraggable *) ((GrDragger*)this->selected->data)->draggables->data; desktop->gr_item = draggable->item; desktop->gr_point_type = draggable->point_type; desktop->gr_point_i = draggable->point_i; desktop->gr_fill_or_stroke = draggable->fill_or_stroke; } else { desktop->gr_item = NULL; desktop->gr_point_type = 0; desktop->gr_point_i = 0; desktop->gr_fill_or_stroke = true; } deselect_all(); for (GList *l = this->draggers; l != NULL; l = l->next) { delete ((GrDragger *) l->data); } g_list_free (this->draggers); this->draggers = NULL; this->selected = NULL; for (GSList *l = this->lines; l != NULL; l = l->next) { gtk_object_destroy( GTK_OBJECT (l->data)); } g_slist_free (this->lines); this->lines = NULL; } GrDraggable::GrDraggable (SPItem *item, guint point_type, guint point_i, bool fill_or_stroke) { this->item = item; this->point_type = point_type; this->point_i = point_i; this->fill_or_stroke = fill_or_stroke; g_object_ref (G_OBJECT (this->item)); } GrDraggable::~GrDraggable () { g_object_unref (G_OBJECT (this->item)); } SPObject *GrDraggable::getServer() { if (!item) { return NULL; } SPObject *server = NULL; if (fill_or_stroke) { server = item->style->getFillPaintServer(); }else { server = item->style->getStrokePaintServer(); } return server; } static boost::optional<Geom::Point> get_snap_vector (Geom::Point p, Geom::Point o, double snap, double initial) { double r = L2 (p - o); if (r < 1e-3) { return boost::optional<Geom::Point>(); } double angle = atan2 (p - o); // snap angle to snaps increments, starting from initial: double a_snapped = initial + floor((angle - initial)/snap + 0.5) * snap; // calculate the new position and subtract p to get the vector: return (o + r * Geom::Point(cos(a_snapped), sin(a_snapped)) - p); } static void gr_knot_moved_handler(SPKnot *knot, Geom::Point const &ppointer, guint state, gpointer data) { GrDragger *dragger = (GrDragger *) data; GrDrag *drag = dragger->parent; Geom::Point p = ppointer; SPDesktop *desktop = dragger->parent->desktop; SnapManager &m = desktop->namedview->snap_manager; double snap_dist = m.snapprefs.getObjectTolerance() / dragger->parent->desktop->current_zoom(); if (state & GDK_SHIFT_MASK) { // with Shift; unsnap if we carry more than one draggable if (dragger->draggables && dragger->draggables->next) { // create a new dragger GrDragger *dr_new = new GrDragger (dragger->parent, dragger->point, NULL); dragger->parent->draggers = g_list_prepend (dragger->parent->draggers, dr_new); // relink to it all but the first draggable in the list for (GSList const* i = dragger->draggables->next; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; dr_new->addDraggable (draggable); } dr_new->updateKnotShape(); g_slist_free (dragger->draggables->next); dragger->draggables->next = NULL; dragger->updateKnotShape(); dragger->updateTip(); } } else if (!(state & GDK_CONTROL_MASK)) { // without Shift or Ctrl; see if we need to snap to another dragger for (GList *di = dragger->parent->draggers; di != NULL; di = di->next) { GrDragger *d_new = (GrDragger *) di->data; if (dragger->mayMerge(d_new) && Geom::L2 (d_new->point - p) < snap_dist) { // Merge draggers: for (GSList const* i = dragger->draggables; i != NULL; i = i->next) { // for all draggables of dragger GrDraggable *draggable = (GrDraggable *) i->data; // copy draggable to d_new: GrDraggable *da_new = new GrDraggable (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke); d_new->addDraggable (da_new); } // unlink and delete this dragger dragger->parent->draggers = g_list_remove (dragger->parent->draggers, dragger); delete dragger; // update the new merged dragger d_new->fireDraggables(true, false, true); d_new->parent->updateLines(); d_new->parent->setSelected (d_new); d_new->updateKnotShape (); d_new->updateTip (); d_new->updateDependencies(true); sp_document_done (sp_desktop_document (d_new->parent->desktop), SP_VERB_CONTEXT_GRADIENT, _("Merge gradient handles")); return; } } } m.setup(desktop); if (!((state & GDK_SHIFT_MASK) || (state & GDK_CONTROL_MASK))) { Inkscape::SnappedPoint s = m.freeSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_OTHER_HANDLE)); if (s.getSnapped()) { p = s.getPoint(); sp_knot_moveto (knot, p); } } else if (state & GDK_CONTROL_MASK) { SnappedConstraints sc; Inkscape::Preferences *prefs = Inkscape::Preferences::get(); unsigned snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12)); /* 0 means no snapping. */ for (GSList const* i = dragger->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; Geom::Point dr_snap(Geom::infinity(), Geom::infinity()); if (draggable->point_type == POINT_LG_BEGIN || draggable->point_type == POINT_LG_END) { for (GList *di = dragger->parent->draggers; di != NULL; di = di->next) { GrDragger *d_new = (GrDragger *) di->data; if (d_new == dragger) continue; if (d_new->isA (draggable->item, draggable->point_type == POINT_LG_BEGIN? POINT_LG_END : POINT_LG_BEGIN, draggable->fill_or_stroke)) { // found the other end of the linear gradient; if (state & GDK_SHIFT_MASK) { // moving linear around center Geom::Point center = Geom::Point (0.5*(d_new->point + dragger->point)); dr_snap = center; } else { // moving linear around the other end dr_snap = d_new->point; } } } } else if (draggable->point_type == POINT_RG_R1 || draggable->point_type == POINT_RG_R2 || draggable->point_type == POINT_RG_FOCUS) { for (GList *di = dragger->parent->draggers; di != NULL; di = di->next) { GrDragger *d_new = (GrDragger *) di->data; if (d_new == dragger) continue; if (d_new->isA (draggable->item, POINT_RG_CENTER, draggable->fill_or_stroke)) { // found the center of the radial gradient; dr_snap = d_new->point; } } } else if (draggable->point_type == POINT_RG_CENTER) { // radial center snaps to hor/vert relative to its original position dr_snap = dragger->point_original; } boost::optional<Geom::Point> snap_vector; if (dr_snap.isFinite()) { if (state & GDK_MOD1_MASK) { // with Alt, snap to the original angle and its perpendiculars snap_vector = get_snap_vector (p, dr_snap, M_PI/2, Geom::atan2 (dragger->point_original - dr_snap)); } else { // with Ctrl, snap to M_PI/snaps snap_vector = get_snap_vector (p, dr_snap, M_PI/snaps, 0); } if (snap_vector) { Inkscape::Snapper::ConstraintLine cl(dr_snap, p + *snap_vector - dr_snap); Inkscape::SnappedPoint s = m.constrainedSnap(Inkscape::SnapCandidatePoint(p + *snap_vector, Inkscape::SNAPSOURCE_OTHER_HANDLE), cl); if (s.getSnapped()) { s.setTransformation(s.getPoint() - p); sc.points.push_back(s); } else { Inkscape::SnappedPoint dummy(p + *snap_vector, Inkscape::SNAPSOURCE_OTHER_HANDLE, 0, Inkscape::SNAPTARGET_CONSTRAINED_ANGLE, Geom::L2(*snap_vector), 10000, true, true, false); dummy.setTransformation(*snap_vector); sc.points.push_back(dummy); } } } } Inkscape::SnappedPoint bsp = m.findBestSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_OTHER_HANDLE), sc, true); // snap indicator will be displayed if needed if (bsp.getSnapped()) { p += bsp.getTransformation(); sp_knot_moveto (knot, p); } } drag->keep_selection = (bool) g_list_find(drag->selected, dragger); bool scale_radial = (state & GDK_CONTROL_MASK) && (state & GDK_SHIFT_MASK); if (drag->keep_selection) { Geom::Point diff = p - dragger->point; drag->selected_move_nowrite (diff[Geom::X], diff[Geom::Y], scale_radial); } else { dragger->point = p; dragger->fireDraggables (false, scale_radial); dragger->updateDependencies(false); } } static void gr_midpoint_limits(GrDragger *dragger, SPObject *server, Geom::Point *begin, Geom::Point *end, Geom::Point *low_lim, Geom::Point *high_lim, GSList **moving) { GrDrag *drag = dragger->parent; // a midpoint dragger can (logically) only contain one GrDraggable GrDraggable *draggable = (GrDraggable *) dragger->draggables->data; // get begin and end points between which dragging is allowed: // the draglimits are between knot(lowest_i - 1) and knot(highest_i + 1) *moving = g_slist_append(*moving, dragger); guint lowest_i = draggable->point_i; guint highest_i = draggable->point_i; GrDragger *lowest_dragger = dragger; GrDragger *highest_dragger = dragger; if (dragger->isSelected()) { GrDragger* d_add; while ( true ) { d_add = drag->getDraggerFor(draggable->item, draggable->point_type, lowest_i - 1, draggable->fill_or_stroke); if ( d_add && g_list_find(drag->selected, d_add) ) { lowest_i = lowest_i - 1; *moving = g_slist_prepend(*moving, d_add); lowest_dragger = d_add; } else { break; } } while ( true ) { d_add = drag->getDraggerFor(draggable->item, draggable->point_type, highest_i + 1, draggable->fill_or_stroke); if ( d_add && g_list_find(drag->selected, d_add) ) { highest_i = highest_i + 1; *moving = g_slist_append(*moving, d_add); highest_dragger = d_add; } else { break; } } } if ( SP_IS_LINEARGRADIENT(server) ) { guint num = SP_LINEARGRADIENT(server)->vector.stops.size(); GrDragger *d_temp; if (lowest_i == 1) { d_temp = drag->getDraggerFor (draggable->item, POINT_LG_BEGIN, 0, draggable->fill_or_stroke); } else { d_temp = drag->getDraggerFor (draggable->item, POINT_LG_MID, lowest_i - 1, draggable->fill_or_stroke); } if (d_temp) *begin = d_temp->point; d_temp = drag->getDraggerFor (draggable->item, POINT_LG_MID, highest_i + 1, draggable->fill_or_stroke); if (d_temp == NULL) { d_temp = drag->getDraggerFor (draggable->item, POINT_LG_END, num-1, draggable->fill_or_stroke); } if (d_temp) *end = d_temp->point; } else if ( SP_IS_RADIALGRADIENT(server) ) { guint num = SP_RADIALGRADIENT(server)->vector.stops.size(); GrDragger *d_temp; if (lowest_i == 1) { d_temp = drag->getDraggerFor (draggable->item, POINT_RG_CENTER, 0, draggable->fill_or_stroke); } else { d_temp = drag->getDraggerFor (draggable->item, draggable->point_type, lowest_i - 1, draggable->fill_or_stroke); } if (d_temp) *begin = d_temp->point; d_temp = drag->getDraggerFor (draggable->item, draggable->point_type, highest_i + 1, draggable->fill_or_stroke); if (d_temp == NULL) { d_temp = drag->getDraggerFor (draggable->item, (draggable->point_type==POINT_RG_MID1) ? POINT_RG_R1 : POINT_RG_R2, num-1, draggable->fill_or_stroke); } if (d_temp) *end = d_temp->point; } *low_lim = dragger->point - (lowest_dragger->point - *begin); *high_lim = dragger->point - (highest_dragger->point - *end); } /** Called when a midpoint knot is dragged. */ static void gr_knot_moved_midpoint_handler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state, gpointer data) { GrDragger *dragger = (GrDragger *) data; GrDrag *drag = dragger->parent; // a midpoint dragger can (logically) only contain one GrDraggable GrDraggable *draggable = (GrDraggable *) dragger->draggables->data; // FIXME: take from prefs double snap_fraction = 0.1; Geom::Point p = ppointer; Geom::Point begin(0,0), end(0,0); Geom::Point low_lim(0,0), high_lim(0,0); SPObject *server = draggable->getServer(); GSList *moving = NULL; gr_midpoint_limits(dragger, server, &begin, &end, &low_lim, &high_lim, &moving); if (state & GDK_CONTROL_MASK) { p = snap_vector_midpoint (p, low_lim, high_lim, snap_fraction); } else { p = snap_vector_midpoint (p, low_lim, high_lim, 0); if (!(state & GDK_SHIFT_MASK)) { Inkscape::Snapper::ConstraintLine cl(low_lim, high_lim - low_lim); SPDesktop *desktop = dragger->parent->desktop; SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop); m.constrainedSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE, cl); } } Geom::Point displacement = p - dragger->point; for (GSList const* i = moving; i != NULL; i = i->next) { GrDragger *drg = (GrDragger*) i->data; SPKnot *drgknot = drg->knot; Geom::Point this_move = displacement; if (state & GDK_MOD1_MASK) { // FIXME: unify all these profiles (here, in nodepath, in tweak) in one place double alpha = 1.0; if (Geom::L2(drg->point - dragger->point) + Geom::L2(drg->point - begin) - 1e-3 > Geom::L2(dragger->point - begin)) { // drg is on the end side from dragger double x = Geom::L2(drg->point - dragger->point)/Geom::L2(end - dragger->point); this_move = (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5) * this_move; } else { // drg is on the begin side from dragger double x = Geom::L2(drg->point - dragger->point)/Geom::L2(begin - dragger->point); this_move = (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5) * this_move; } } drg->point += this_move; sp_knot_moveto (drgknot, drg->point); drg->fireDraggables (false); drg->updateDependencies(false); } g_slist_free(moving); drag->keep_selection = dragger->isSelected(); } static void gr_knot_grabbed_handler (SPKnot */*knot*/, unsigned int /*state*/, gpointer data) { GrDragger *dragger = (GrDragger *) data; sp_canvas_force_full_redraw_after_interruptions(dragger->parent->desktop->canvas, 5); } /** Called when the mouse releases a dragger knot; changes gradient writing to repr, updates other draggers if needed */ static void gr_knot_ungrabbed_handler (SPKnot *knot, unsigned int state, gpointer data) { GrDragger *dragger = (GrDragger *) data; sp_canvas_end_forced_full_redraws(dragger->parent->desktop->canvas); dragger->point_original = dragger->point = knot->pos; if ((state & GDK_CONTROL_MASK) && (state & GDK_SHIFT_MASK)) { dragger->fireDraggables (true, true); } else { dragger->fireDraggables (true); } for (GList *i = dragger->parent->selected; i != NULL; i = i->next) { GrDragger *d = (GrDragger *) i->data; if (d == dragger) continue; d->fireDraggables (true); } // make this dragger selected if (!dragger->parent->keep_selection) { dragger->parent->setSelected (dragger); } dragger->parent->keep_selection = false; dragger->updateDependencies(true); // we did an undoable action sp_document_done (sp_desktop_document (dragger->parent->desktop), SP_VERB_CONTEXT_GRADIENT, _("Move gradient handle")); } /** Called when a dragger knot is clicked; selects the dragger or deletes it depending on the state of the keyboard keys */ static void gr_knot_clicked_handler(SPKnot */*knot*/, guint state, gpointer data) { GrDragger *dragger = (GrDragger *) data; GrDraggable *draggable = (GrDraggable *) dragger->draggables->data; if (!draggable) return; if ( (state & GDK_CONTROL_MASK) && (state & GDK_MOD1_MASK ) ) { // delete this knot from vector SPGradient *gradient = sp_item_gradient (draggable->item, draggable->fill_or_stroke); gradient = gradient->getVector(); if (gradient->vector.stops.size() > 2) { // 2 is the minimum SPStop *stop = NULL; switch (draggable->point_type) { // if we delete first or last stop, move the next/previous to the edge case POINT_LG_BEGIN: case POINT_RG_CENTER: stop = gradient->getFirstStop(); { SPStop *next = stop->getNextStop(); if (next) { next->offset = 0; sp_repr_set_css_double (SP_OBJECT_REPR (next), "offset", 0); } } break; case POINT_LG_END: case POINT_RG_R1: case POINT_RG_R2: stop = sp_last_stop(gradient); { SPStop *prev = stop->getPrevStop(); if (prev) { prev->offset = 1; sp_repr_set_css_double (SP_OBJECT_REPR (prev), "offset", 1); } } break; case POINT_LG_MID: case POINT_RG_MID1: case POINT_RG_MID2: stop = sp_get_stop_i(gradient, draggable->point_i); break; } SP_OBJECT_REPR(gradient)->removeChild(SP_OBJECT_REPR(stop)); sp_document_done (SP_OBJECT_DOCUMENT (gradient), SP_VERB_CONTEXT_GRADIENT, _("Delete gradient stop")); } } else { // select the dragger dragger->point_original = dragger->point; if ( state & GDK_SHIFT_MASK ) { dragger->parent->setSelected (dragger, true, false); } else { dragger->parent->setSelected (dragger); } } } /** Called when a dragger knot is doubleclicked; opens gradient editor with the stop from the first draggable */ static void gr_knot_doubleclicked_handler (SPKnot */*knot*/, guint /*state*/, gpointer data) { GrDragger *dragger = (GrDragger *) data; dragger->point_original = dragger->point; if (dragger->draggables == NULL) return; GrDraggable *draggable = (GrDraggable *) dragger->draggables->data; sp_item_gradient_edit_stop (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke); } /** Act upon all draggables of the dragger, setting them to the dragger's point */ void 01030 GrDragger::fireDraggables (bool write_repr, bool scale_radial, bool merging_focus) { for (GSList const* i = this->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; // set local_change flag so that selection_changed callback does not regenerate draggers this->parent->local_change = true; // change gradient, optionally writing to repr; prevent focus from moving if it's snapped // to the center, unless it's the first update upon merge when we must snap it to the point if (merging_focus || !(draggable->point_type == POINT_RG_FOCUS && this->isA(draggable->item, POINT_RG_CENTER, draggable->point_i, draggable->fill_or_stroke))) { sp_item_gradient_set_coords (draggable->item, draggable->point_type, draggable->point_i, this->point, draggable->fill_or_stroke, write_repr, scale_radial); } } } /** Checks if the dragger has a draggable with this point_type */ bool 01052 GrDragger::isA (gint point_type) { for (GSList const* i = this->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; if (draggable->point_type == point_type) { return true; } } return false; } /** Checks if the dragger has a draggable with this item, point_type + point_i (number), fill_or_stroke */ bool 01067 GrDragger::isA (SPItem *item, gint point_type, gint point_i, bool fill_or_stroke) { for (GSList const* i = this->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; if ( (draggable->point_type == point_type) && (draggable->point_i == point_i) && (draggable->item == item) && (draggable->fill_or_stroke == fill_or_stroke) ) { return true; } } return false; } /** Checks if the dragger has a draggable with this item, point_type, fill_or_stroke */ bool 01082 GrDragger::isA (SPItem *item, gint point_type, bool fill_or_stroke) { for (GSList const* i = this->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; if ( (draggable->point_type == point_type) && (draggable->item == item) && (draggable->fill_or_stroke == fill_or_stroke) ) { return true; } } return false; } bool GrDraggable::mayMerge (GrDraggable *da2) { if ((this->item == da2->item) && (this->fill_or_stroke == da2->fill_or_stroke)) { // we must not merge the points of the same gradient! if (!((this->point_type == POINT_RG_FOCUS && da2->point_type == POINT_RG_CENTER) || (this->point_type == POINT_RG_CENTER && da2->point_type == POINT_RG_FOCUS))) { // except that we can snap center and focus together return false; } } // disable merging of midpoints. if ( (this->point_type == POINT_LG_MID) || (da2->point_type == POINT_LG_MID) || (this->point_type == POINT_RG_MID1) || (da2->point_type == POINT_RG_MID1) || (this->point_type == POINT_RG_MID2) || (da2->point_type == POINT_RG_MID2) ) return false; return true; } bool GrDragger::mayMerge (GrDragger *other) { if (this == other) return false; for (GSList const* i = this->draggables; i != NULL; i = i->next) { // for all draggables of this GrDraggable *da1 = (GrDraggable *) i->data; for (GSList const* j = other->draggables; j != NULL; j = j->next) { // for all draggables of other GrDraggable *da2 = (GrDraggable *) j->data; if (!da1->mayMerge(da2)) return false; } } return true; } bool GrDragger::mayMerge (GrDraggable *da2) { for (GSList const* i = this->draggables; i != NULL; i = i->next) { // for all draggables of this GrDraggable *da1 = (GrDraggable *) i->data; if (!da1->mayMerge(da2)) return false; } return true; } /** Updates the statusbar tip of the dragger knot, based on its draggables */ void 01145 GrDragger::updateTip () { if (this->knot && this->knot->tip) { g_free (this->knot->tip); this->knot->tip = NULL; } if (g_slist_length (this->draggables) == 1) { GrDraggable *draggable = (GrDraggable *) this->draggables->data; char *item_desc = sp_item_description(draggable->item); switch (draggable->point_type) { case POINT_LG_MID: case POINT_RG_MID1: case POINT_RG_MID2: this->knot->tip = g_strdup_printf (_("%s %d for: %s%s; drag with <b>Ctrl</b> to snap offset; click with <b>Ctrl+Alt</b> to delete stop"), _(gr_knot_descr[draggable->point_type]), draggable->point_i, item_desc, draggable->fill_or_stroke == false ? _(" (stroke)") : ""); break; default: this->knot->tip = g_strdup_printf (_("%s for: %s%s; drag with <b>Ctrl</b> to snap angle, with <b>Ctrl+Alt</b> to preserve angle, with <b>Ctrl+Shift</b> to scale around center"), _(gr_knot_descr[draggable->point_type]), item_desc, draggable->fill_or_stroke == false ? _(" (stroke)") : ""); break; } g_free(item_desc); } else if (g_slist_length (draggables) == 2 && isA (POINT_RG_CENTER) && isA (POINT_RG_FOCUS)) { this->knot->tip = g_strdup_printf (_("Radial gradient <b>center</b> and <b>focus</b>; drag with <b>Shift</b> to separate focus")); } else { int length = g_slist_length (this->draggables); this->knot->tip = g_strdup_printf (ngettext("Gradient point shared by <b>%d</b> gradient; drag with <b>Shift</b> to separate", "Gradient point shared by <b>%d</b> gradients; drag with <b>Shift</b> to separate", length), length); } } /** Adds a draggable to the dragger */ void 01189 GrDragger::updateKnotShape () { if (!draggables) return; GrDraggable *last = (GrDraggable *) g_slist_last(draggables)->data; g_object_set (G_OBJECT (this->knot->item), "shape", gr_knot_shapes[last->point_type], NULL); } /** Adds a draggable to the dragger */ void 01201 GrDragger::addDraggable (GrDraggable *draggable) { this->draggables = g_slist_prepend (this->draggables, draggable); this->updateTip(); } /** Moves this dragger to the point of the given draggable, acting upon all other draggables */ void 01213 GrDragger::moveThisToDraggable (SPItem *item, gint point_type, gint point_i, bool fill_or_stroke, bool write_repr) { GrDraggable *dr_first = (GrDraggable *) this->draggables->data; if (!dr_first) return; this->point = sp_item_gradient_get_coords (dr_first->item, dr_first->point_type, dr_first->point_i, dr_first->fill_or_stroke); this->point_original = this->point; sp_knot_moveto (this->knot, this->point); for (GSList const* i = this->draggables; i != NULL; i = i->next) { GrDraggable *da = (GrDraggable *) i->data; if ( (da->item == item) && (point_type == -1 || da->point_type == point_type) && (point_i == -1 || da->point_i == point_i) && (da->fill_or_stroke == fill_or_stroke) ) { continue; } sp_item_gradient_set_coords (da->item, da->point_type, da->point_i, this->point, da->fill_or_stroke, write_repr, false); } // FIXME: here we should also call this->updateDependencies(write_repr); to propagate updating, but how to prevent loops? } /** Moves all midstop draggables that depend on this one */ void 01241 GrDragger::updateMidstopDependencies (GrDraggable *draggable, bool write_repr) { SPObject *server = draggable->getServer(); if (!server) return; guint num = SP_GRADIENT(server)->vector.stops.size(); if (num <= 2) return; if ( SP_IS_LINEARGRADIENT(server) ) { for ( guint i = 1; i < num - 1; i++ ) { this->moveOtherToDraggable (draggable->item, POINT_LG_MID, i, draggable->fill_or_stroke, write_repr); } } else if ( SP_IS_RADIALGRADIENT(server) ) { for ( guint i = 1; i < num - 1; i++ ) { this->moveOtherToDraggable (draggable->item, POINT_RG_MID1, i, draggable->fill_or_stroke, write_repr); this->moveOtherToDraggable (draggable->item, POINT_RG_MID2, i, draggable->fill_or_stroke, write_repr); } } } /** Moves all draggables that depend on this one */ void 01265 GrDragger::updateDependencies (bool write_repr) { for (GSList const* i = this->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; switch (draggable->point_type) { case POINT_LG_BEGIN: { // the end point is dependent only when dragging with ctrl+shift this->moveOtherToDraggable (draggable->item, POINT_LG_END, -1, draggable->fill_or_stroke, write_repr); this->updateMidstopDependencies (draggable, write_repr); } break; case POINT_LG_END: { // the begin point is dependent only when dragging with ctrl+shift this->moveOtherToDraggable (draggable->item, POINT_LG_BEGIN, 0, draggable->fill_or_stroke, write_repr); this->updateMidstopDependencies (draggable, write_repr); } break; case POINT_LG_MID: // no other nodes depend on mid points. break; case POINT_RG_R2: this->moveOtherToDraggable (draggable->item, POINT_RG_R1, -1, draggable->fill_or_stroke, write_repr); this->moveOtherToDraggable (draggable->item, POINT_RG_FOCUS, -1, draggable->fill_or_stroke, write_repr); this->updateMidstopDependencies (draggable, write_repr); break; case POINT_RG_R1: this->moveOtherToDraggable (draggable->item, POINT_RG_R2, -1, draggable->fill_or_stroke, write_repr); this->moveOtherToDraggable (draggable->item, POINT_RG_FOCUS, -1, draggable->fill_or_stroke, write_repr); this->updateMidstopDependencies (draggable, write_repr); break; case POINT_RG_CENTER: this->moveOtherToDraggable (draggable->item, POINT_RG_R1, -1, draggable->fill_or_stroke, write_repr); this->moveOtherToDraggable (draggable->item, POINT_RG_R2, -1, draggable->fill_or_stroke, write_repr); this->moveOtherToDraggable (draggable->item, POINT_RG_FOCUS, -1, draggable->fill_or_stroke, write_repr); this->updateMidstopDependencies (draggable, write_repr); break; case POINT_RG_FOCUS: // nothing can depend on that break; case POINT_RG_MID1: this->moveOtherToDraggable (draggable->item, POINT_RG_MID2, draggable->point_i, draggable->fill_or_stroke, write_repr); break; case POINT_RG_MID2: this->moveOtherToDraggable (draggable->item, POINT_RG_MID1, draggable->point_i, draggable->fill_or_stroke, write_repr); break; default: break; } } } GrDragger::GrDragger (GrDrag *parent, Geom::Point p, GrDraggable *draggable) : point(p), point_original(p) { this->draggables = NULL; this->parent = parent; // create the knot this->knot = sp_knot_new (parent->desktop, NULL); this->knot->setMode(SP_KNOT_MODE_XOR); this->knot->setFill(GR_KNOT_COLOR_NORMAL, GR_KNOT_COLOR_MOUSEOVER, GR_KNOT_COLOR_MOUSEOVER); this->knot->setStroke(0x0000007f, 0x0000007f, 0x0000007f); sp_knot_update_ctrl(this->knot); // move knot to the given point sp_knot_set_position (this->knot, p, SP_KNOT_STATE_NORMAL); sp_knot_show (this->knot); // connect knot's signals if ( (draggable) // it can be NULL if a node in unsnapped (eg. focus point unsnapped from center) // luckily, midstops never snap to other nodes so are never unsnapped... && ( (draggable->point_type == POINT_LG_MID) || (draggable->point_type == POINT_RG_MID1) || (draggable->point_type == POINT_RG_MID2) ) ) { this->handler_id = g_signal_connect (G_OBJECT (this->knot), "moved", G_CALLBACK (gr_knot_moved_midpoint_handler), this); } else { this->handler_id = g_signal_connect (G_OBJECT (this->knot), "moved", G_CALLBACK (gr_knot_moved_handler), this); } g_signal_connect (G_OBJECT (this->knot), "clicked", G_CALLBACK (gr_knot_clicked_handler), this); g_signal_connect (G_OBJECT (this->knot), "doubleclicked", G_CALLBACK (gr_knot_doubleclicked_handler), this); g_signal_connect (G_OBJECT (this->knot), "grabbed", G_CALLBACK (gr_knot_grabbed_handler), this); g_signal_connect (G_OBJECT (this->knot), "ungrabbed", G_CALLBACK (gr_knot_ungrabbed_handler), this); // add the initial draggable if (draggable) this->addDraggable (draggable); updateKnotShape(); } GrDragger::~GrDragger () { // unselect if it was selected this->parent->setDeselected(this); // disconnect signals g_signal_handlers_disconnect_by_func(G_OBJECT(this->knot), (gpointer) G_CALLBACK (gr_knot_moved_handler), this); g_signal_handlers_disconnect_by_func(G_OBJECT(this->knot), (gpointer) G_CALLBACK (gr_knot_clicked_handler), this); g_signal_handlers_disconnect_by_func(G_OBJECT(this->knot), (gpointer) G_CALLBACK (gr_knot_doubleclicked_handler), this); g_signal_handlers_disconnect_by_func(G_OBJECT(this->knot), (gpointer) G_CALLBACK (gr_knot_grabbed_handler), this); g_signal_handlers_disconnect_by_func(G_OBJECT(this->knot), (gpointer) G_CALLBACK (gr_knot_ungrabbed_handler), this); /* unref should call destroy */ g_object_unref (G_OBJECT (this->knot)); // delete all draggables for (GSList const* i = this->draggables; i != NULL; i = i->next) { delete ((GrDraggable *) i->data); } g_slist_free (this->draggables); this->draggables = NULL; } /** Select the dragger which has the given draggable. */ GrDragger * 01390 GrDrag::getDraggerFor (SPItem *item, gint point_type, gint point_i, bool fill_or_stroke) { for (GList const* i = this->draggers; i != NULL; i = i->next) { GrDragger *dragger = (GrDragger *) i->data; for (GSList const* j = dragger->draggables; j != NULL; j = j->next) { GrDraggable *da2 = (GrDraggable *) j->data; if ( (da2->item == item) && (point_type == -1 || da2->point_type == point_type) && // -1 means this does not matter (point_i == -1 || da2->point_i == point_i) && // -1 means this does not matter (da2->fill_or_stroke == fill_or_stroke)) { return (dragger); } } } return NULL; } void GrDragger::moveOtherToDraggable (SPItem *item, gint point_type, gint point_i, bool fill_or_stroke, bool write_repr) { GrDragger *d = this->parent->getDraggerFor (item, point_type, point_i, fill_or_stroke); if (d && d != this) { d->moveThisToDraggable (item, point_type, point_i, fill_or_stroke, write_repr); } } /** Draw this dragger as selected */ void 01422 GrDragger::select() { this->knot->fill [SP_KNOT_STATE_NORMAL] = GR_KNOT_COLOR_SELECTED; g_object_set (G_OBJECT (this->knot->item), "fill_color", GR_KNOT_COLOR_SELECTED, NULL); } /** Draw this dragger as normal (deselected) */ void 01432 GrDragger::deselect() { this->knot->fill [SP_KNOT_STATE_NORMAL] = GR_KNOT_COLOR_NORMAL; g_object_set (G_OBJECT (this->knot->item), "fill_color", GR_KNOT_COLOR_NORMAL, NULL); } bool GrDragger::isSelected() { return g_list_find (parent->selected, this); } /** \brief Deselect all stops/draggers (private) */ void 01448 GrDrag::deselect_all() { while (selected) { ( (GrDragger*) selected->data)->deselect(); selected = g_list_remove(selected, selected->data); } } /** \brief Deselect all stops/draggers (public; emits signal) */ void 01460 GrDrag::deselectAll() { deselect_all(); this->desktop->emitToolSubselectionChanged(NULL); } /** \brief Select all stops/draggers */ void 01470 GrDrag::selectAll() { for (GList *l = this->draggers; l != NULL; l = l->next) { GrDragger *d = ((GrDragger *) l->data); setSelected (d, true, true); } } /** \brief Select all stops/draggers that match the coords */ void 01482 GrDrag::selectByCoords(std::vector<Geom::Point> coords) { for (GList *l = this->draggers; l != NULL; l = l->next) { GrDragger *d = ((GrDragger *) l->data); for (guint k = 0; k < coords.size(); k++) { if (Geom::L2 (d->point - coords[k]) < 1e-4) { setSelected (d, true, true); } } } } /** \brief Select all stops/draggers that fall within the rect */ void 01499 GrDrag::selectRect(Geom::Rect const &r) { for (GList *l = this->draggers; l != NULL; l = l->next) { GrDragger *d = ((GrDragger *) l->data); if (r.contains(d->point)) { setSelected (d, true, true); } } } /** \brief Select a dragger \param dragger The dragger to select \param add_to_selection If true, add to selection, otherwise deselect others \param override If true, always select this node, otherwise toggle selected status */ void 01516 GrDrag::setSelected (GrDragger *dragger, bool add_to_selection, bool override) { GrDragger *seldragger = NULL; if (add_to_selection) { if (!dragger) return; if (override) { if (!g_list_find(selected, dragger)) { selected = g_list_prepend(selected, dragger); } dragger->select(); seldragger = dragger; } else { // toggle if (g_list_find(selected, dragger)) { selected = g_list_remove(selected, dragger); dragger->deselect(); if (selected) { seldragger = (GrDragger*) selected->data; // select the dragger that is first in the list } } else { selected = g_list_prepend(selected, dragger); dragger->select(); seldragger = dragger; } } } else { deselect_all(); if (dragger) { selected = g_list_prepend(selected, dragger); dragger->select(); seldragger = dragger; } } if (seldragger) { this->desktop->emitToolSubselectionChanged((gpointer) seldragger); } } /** \brief Deselect a dragger \param dragger The dragger to deselect */ void 01559 GrDrag::setDeselected (GrDragger *dragger) { if (g_list_find(selected, dragger)) { selected = g_list_remove(selected, dragger); dragger->deselect(); } this->desktop->emitToolSubselectionChanged((gpointer) (selected ? selected->data : NULL )); } /** Create a line from p1 to p2 and add it to the lines list */ void 01574 GrDrag::addLine (SPItem *item, Geom::Point p1, Geom::Point p2, guint32 rgba) { SPCanvasItem *line = sp_canvas_item_new(sp_desktop_controls(this->desktop), SP_TYPE_CTRLLINE, NULL); sp_canvas_item_move_to_z(line, 0); SP_CTRLLINE(line)->item = item; sp_ctrlline_set_coords(SP_CTRLLINE(line), p1, p2); if (rgba != GR_LINE_COLOR_FILL) // fill is the default, so don't set color for it to speed up redraw sp_ctrlline_set_rgba32 (SP_CTRLLINE(line), rgba); sp_canvas_item_show (line); this->lines = g_slist_append (this->lines, line); } /** If there already exists a dragger within MERGE_DIST of p, add the draggable to it; otherwise create new dragger and add it to draggers list */ void 01592 GrDrag::addDragger (GrDraggable *draggable) { Geom::Point p = sp_item_gradient_get_coords (draggable->item, draggable->point_type, draggable->point_i, draggable->fill_or_stroke); for (GList *i = this->draggers; i != NULL; i = i->next) { GrDragger *dragger = (GrDragger *) i->data; if (dragger->mayMerge (draggable) && Geom::L2 (dragger->point - p) < MERGE_DIST) { // distance is small, merge this draggable into dragger, no need to create new dragger dragger->addDraggable (draggable); dragger->updateKnotShape(); return; } } GrDragger *new_dragger = new GrDragger(this, p, draggable); // fixme: draggers should be added AFTER the last one: this way tabbing through them will be from begin to end. this->draggers = g_list_append (this->draggers, new_dragger); } /** Add draggers for the radial gradient rg on item */ void 01615 GrDrag::addDraggersRadial (SPRadialGradient *rg, SPItem *item, bool fill_or_stroke) { addDragger (new GrDraggable (item, POINT_RG_CENTER, 0, fill_or_stroke)); guint num = rg->vector.stops.size(); if (num > 2) { for ( guint i = 1; i < num - 1; i++ ) { addDragger (new GrDraggable (item, POINT_RG_MID1, i, fill_or_stroke)); } } addDragger (new GrDraggable (item, POINT_RG_R1, num-1, fill_or_stroke)); if (num > 2) { for ( guint i = 1; i < num - 1; i++ ) { addDragger (new GrDraggable (item, POINT_RG_MID2, i, fill_or_stroke)); } } addDragger (new GrDraggable (item, POINT_RG_R2, num-1, fill_or_stroke)); addDragger (new GrDraggable (item, POINT_RG_FOCUS, 0, fill_or_stroke)); } /** Add draggers for the linear gradient lg on item */ void 01638 GrDrag::addDraggersLinear (SPLinearGradient *lg, SPItem *item, bool fill_or_stroke) { addDragger (new GrDraggable (item, POINT_LG_BEGIN, 0, fill_or_stroke)); guint num = lg->vector.stops.size(); if (num > 2) { for ( guint i = 1; i < num - 1; i++ ) { addDragger (new GrDraggable (item, POINT_LG_MID, i, fill_or_stroke)); } } addDragger (new GrDraggable (item, POINT_LG_END, num-1, fill_or_stroke)); } /** Artificially grab the knot of this dragger; used by the gradient context */ void 01654 GrDrag::grabKnot (GrDragger *dragger, gint x, gint y, guint32 etime) { if (dragger) { sp_knot_start_dragging (dragger->knot, dragger->point, x, y, etime); } } /** Artificially grab the knot of the dragger with this draggable; used by the gradient context */ void 01665 GrDrag::grabKnot (SPItem *item, gint point_type, gint point_i, bool fill_or_stroke, gint x, gint y, guint32 etime) { GrDragger *dragger = getDraggerFor (item, point_type, point_i, fill_or_stroke); if (dragger) { sp_knot_start_dragging (dragger->knot, dragger->point, x, y, etime); } } /** Regenerates the draggers list from the current selection; is called when selection is changed or modified, also when a radial dragger needs to update positions of other draggers in the gradient */ 01677 void GrDrag::updateDraggers () { while (selected) { selected = g_list_remove(selected, selected->data); } // delete old draggers for (GList const* i = this->draggers; i != NULL; i = i->next) { delete static_cast<GrDragger *>(i->data); } g_list_free(this->draggers); this->draggers = NULL; g_return_if_fail(this->selection != NULL); for (GSList const* i = this->selection->itemList(); i != NULL; i = i->next) { SPItem *item = SP_ITEM(i->data); SPStyle *style = item->style; if (style && (style->fill.isPaintserver())) { SPPaintServer *server = style->getFillPaintServer(); if ( server && server->isSolid() ) { // Suppress "gradientness" of solid paint } else if ( SP_IS_LINEARGRADIENT(server) ) { addDraggersLinear( SP_LINEARGRADIENT(server), item, true ); } else if ( SP_IS_RADIALGRADIENT(server) ) { addDraggersRadial( SP_RADIALGRADIENT(server), item, true ); } } if (style && (style->stroke.isPaintserver())) { SPPaintServer *server = style->getStrokePaintServer(); if ( server && server->isSolid() ) { // Suppress "gradientness" of solid paint } else if ( SP_IS_LINEARGRADIENT(server) ) { addDraggersLinear( SP_LINEARGRADIENT(server), item, false ); } else if ( SP_IS_RADIALGRADIENT(server) ) { addDraggersRadial( SP_RADIALGRADIENT(server), item, false ); } } } } /** * \brief Returns true if at least one of the draggers' knots has the mouse hovering above it */ bool 01725 GrDrag::mouseOver() { for (GList const* i = this->draggers; i != NULL; i = i->next) { GrDragger *d = (GrDragger *) i->data; if (d->knot && (d->knot->flags & SP_KNOT_MOUSEOVER)) { return true; } } return false; } /** Regenerates the lines list from the current selection; is called on each move of a dragger, so that lines are always in sync with the actual gradient */ void 01740 GrDrag::updateLines () { // delete old lines for (GSList const *i = this->lines; i != NULL; i = i->next) { gtk_object_destroy( GTK_OBJECT (i->data)); } g_slist_free (this->lines); this->lines = NULL; g_return_if_fail (this->selection != NULL); for (GSList const* i = this->selection->itemList(); i != NULL; i = i->next) { SPItem *item = SP_ITEM(i->data); SPStyle *style = SP_OBJECT_STYLE (item); if (style && (style->fill.isPaintserver())) { SPPaintServer *server = item->style->getFillPaintServer(); if ( server && server->isSolid() ) { // Suppress "gradientness" of solid paint } else if ( SP_IS_LINEARGRADIENT(server) ) { this->addLine (item, sp_item_gradient_get_coords (item, POINT_LG_BEGIN, 0, true), sp_item_gradient_get_coords (item, POINT_LG_END, 0, true), GR_LINE_COLOR_FILL); } else if ( SP_IS_RADIALGRADIENT(server) ) { Geom::Point center = sp_item_gradient_get_coords (item, POINT_RG_CENTER, 0, true); this->addLine (item, center, sp_item_gradient_get_coords (item, POINT_RG_R1, 0, true), GR_LINE_COLOR_FILL); this->addLine (item, center, sp_item_gradient_get_coords (item, POINT_RG_R2, 0, true), GR_LINE_COLOR_FILL); } } if (style && (style->stroke.isPaintserver())) { SPPaintServer *server = item->style->getStrokePaintServer(); if ( server && server->isSolid() ) { // Suppress "gradientness" of solid paint } else if ( SP_IS_LINEARGRADIENT(server) ) { this->addLine (item, sp_item_gradient_get_coords (item, POINT_LG_BEGIN, 0, false), sp_item_gradient_get_coords (item, POINT_LG_END, 0, false), GR_LINE_COLOR_STROKE); } else if ( SP_IS_RADIALGRADIENT(server) ) { Geom::Point center = sp_item_gradient_get_coords (item, POINT_RG_CENTER, 0, false); this->addLine (item, center, sp_item_gradient_get_coords (item, POINT_RG_R1, 0, false), GR_LINE_COLOR_STROKE); this->addLine (item, center, sp_item_gradient_get_coords (item, POINT_RG_R2, 0, false), GR_LINE_COLOR_STROKE); } } } } /** Regenerates the levels list from the current selection */ void 01789 GrDrag::updateLevels () { hor_levels.clear(); vert_levels.clear(); g_return_if_fail (this->selection != NULL); for (GSList const* i = this->selection->itemList(); i != NULL; i = i->next) { SPItem *item = SP_ITEM(i->data); Geom::OptRect rect = sp_item_bbox_desktop (item); if (rect) { // Remember the edges of the bbox and the center axis hor_levels.push_back(rect->min()[Geom::Y]); hor_levels.push_back(rect->max()[Geom::Y]); hor_levels.push_back(0.5 * (rect->min()[Geom::Y] + rect->max()[Geom::Y])); vert_levels.push_back(rect->min()[Geom::X]); vert_levels.push_back(rect->max()[Geom::X]); vert_levels.push_back(0.5 * (rect->min()[Geom::X] + rect->max()[Geom::X])); } } } void GrDrag::selected_reverse_vector () { if (selected == NULL) return; for (GSList const* i = ( (GrDragger*) selected->data )->draggables; i != NULL; i = i->next) { GrDraggable *draggable = (GrDraggable *) i->data; sp_item_gradient_reverse_vector (draggable->item, draggable->fill_or_stroke); } } void GrDrag::selected_move_nowrite (double x, double y, bool scale_radial) { selected_move (x, y, false, scale_radial); } void GrDrag::selected_move (double x, double y, bool write_repr, bool scale_radial) { if (selected == NULL) return; bool did = false; for (GList *i = selected; i != NULL; i = i->next) { GrDragger *d = (GrDragger *) i->data; if (!d->isA(POINT_LG_MID) && !d->isA(POINT_RG_MID1) && !d->isA(POINT_RG_MID2)) { // if this is an endpoint, // Moving an rg center moves its focus and radii as well. // therefore, if this is a focus or radius and if selection // contains the center as well, do not move this one if (d->isA(POINT_RG_R1) || d->isA(POINT_RG_R2) || (d->isA(POINT_RG_FOCUS) && !d->isA(POINT_RG_CENTER))) { bool skip_radius_with_center = false; for (GList *di = selected; di != NULL; di = di->next) { GrDragger *d_new = (GrDragger *) di->data; if (d_new->isA (((GrDraggable *) d->draggables->data)->item, POINT_RG_CENTER, 0, ((GrDraggable *) d->draggables->data)->fill_or_stroke)) { // FIXME: here we take into account only the first draggable! skip_radius_with_center = true; } } if (skip_radius_with_center) continue; } did = true; d->point += Geom::Point (x, y); d->point_original = d->point; sp_knot_moveto (d->knot, d->point); d->fireDraggables (write_repr, scale_radial); d->updateDependencies(write_repr); } } if (write_repr && did) { // we did an undoable action sp_document_maybe_done (sp_desktop_document (desktop), "grmoveh", SP_VERB_CONTEXT_GRADIENT, _("Move gradient handle(s)")); return; } if (!did) { // none of the end draggers are selected, so let's try to move the mids GrDragger *dragger = (GrDragger *) selected->data; // a midpoint dragger can (logically) only contain one GrDraggable GrDraggable *draggable = (GrDraggable *) dragger->draggables->data; Geom::Point begin(0,0), end(0,0); Geom::Point low_lim(0,0), high_lim(0,0); SPObject *server = draggable->getServer(); GSList *moving = NULL; gr_midpoint_limits(dragger, server, &begin, &end, &low_lim, &high_lim, &moving); Geom::Point p(x, y); p = snap_vector_midpoint (dragger->point + p, low_lim, high_lim, 0); Geom::Point displacement = p - dragger->point; for (GSList const* i = moving; i != NULL; i = i->next) { GrDragger *drg = (GrDragger*) i->data; SPKnot *drgknot = drg->knot; drg->point += displacement; sp_knot_moveto (drgknot, drg->point); drg->fireDraggables (true); drg->updateDependencies(true); did = true; } g_slist_free(moving); if (write_repr && did) { // we did an undoable action sp_document_maybe_done (sp_desktop_document (desktop), "grmovem", SP_VERB_CONTEXT_GRADIENT, _("Move gradient mid stop(s)")); } } } void GrDrag::selected_move_screen (double x, double y) { gdouble zoom = desktop->current_zoom(); gdouble zx = x / zoom; gdouble zy = y / zoom; selected_move (zx, zy); } /** Select the knot next to the last selected one and deselect all other selected. */ GrDragger * 01933 GrDrag::select_next () { GrDragger *d = NULL; if (selected == NULL || g_list_find(draggers, selected->data)->next == NULL) { if (draggers) d = (GrDragger *) draggers->data; } else { d = (GrDragger *) g_list_find(draggers, selected->data)->next->data; } if (d) setSelected (d); return d; } /** Select the knot previous from the last selected one and deselect all other selected. */ GrDragger * 01951 GrDrag::select_prev () { GrDragger *d = NULL; if (selected == NULL || g_list_find(draggers, selected->data)->prev == NULL) { if (draggers) d = (GrDragger *) g_list_last (draggers)->data; } else { d = (GrDragger *) g_list_find(draggers, selected->data)->prev->data; } if (d) setSelected (d); return d; } // FIXME: i.m.o. an ugly function that I just made to work, but... aargh! (Johan) void GrDrag::deleteSelected (bool just_one) { if (!selected) return; SPDocument *document = false; struct StructStopInfo { SPStop * spstop; GrDraggable * draggable; SPGradient * gradient; SPGradient * vector; }; GSList *midstoplist = NULL; // list of stops that must be deleted (will be deleted first) GSList *endstoplist = NULL; // list of stops that must be deleted while (selected) { GrDragger *dragger = (GrDragger*) selected->data; for (GSList * drgble = dragger->draggables; drgble != NULL; drgble = drgble->next) { GrDraggable *draggable = (GrDraggable*) drgble->data; SPGradient *gradient = sp_item_gradient (draggable->item, draggable->fill_or_stroke); SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false); switch (draggable->point_type) { case POINT_LG_MID: case POINT_RG_MID1: case POINT_RG_MID2: { SPStop *stop = sp_get_stop_i(vector, draggable->point_i); // check if already present in list. (e.g. when both RG_MID1 and RG_MID2 were selected) bool present = false; for (GSList const * l = midstoplist; l != NULL; l = l->next) { if ( (SPStop*)l->data == stop ) { present = true; break; // no need to search further. } } if (!present) midstoplist = g_slist_append(midstoplist, stop); } break; case POINT_LG_BEGIN: case POINT_LG_END: case POINT_RG_CENTER: case POINT_RG_R1: case POINT_RG_R2: { SPStop *stop = NULL; if ( (draggable->point_type == POINT_LG_BEGIN) || (draggable->point_type == POINT_RG_CENTER) ) { stop = vector->getFirstStop(); } else { stop = sp_last_stop(vector); } if (stop) { StructStopInfo *stopinfo = new StructStopInfo; stopinfo->spstop = stop; stopinfo->draggable = draggable; stopinfo->gradient = gradient; stopinfo->vector = vector; // check if already present in list. (e.g. when both R1 and R2 were selected) bool present = false; for (GSList const * l = endstoplist; l != NULL; l = l->next) { if ( ((StructStopInfo*)l->data)->spstop == stopinfo->spstop ) { present = true; break; // no need to search further. } } if (!present) endstoplist = g_slist_append(endstoplist, stopinfo); } } break; default: break; } } selected = g_list_remove(selected, dragger); if ( just_one ) break; // iterate once if just_one is set. } while (midstoplist) { SPStop *stop = (SPStop*) midstoplist->data; document = SP_OBJECT_DOCUMENT (stop); Inkscape::XML::Node * parent = SP_OBJECT_REPR(stop)->parent(); parent->removeChild(SP_OBJECT_REPR(stop)); midstoplist = g_slist_remove(midstoplist, stop); } while (endstoplist) { StructStopInfo *stopinfo = (StructStopInfo*) endstoplist->data; document = SP_OBJECT_DOCUMENT (stopinfo->spstop); // 2 is the minimum, cannot delete more than that without deleting the whole vector // cannot use vector->vector.stops.size() because the vector might be invalidated by deletion of a midstop // manually count the children, don't know if there already exists a function for this... int len = 0; for ( SPObject *child = sp_object_first_child(stopinfo->vector) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) { if ( SP_IS_STOP(child) ) len ++; } if (len > 2) { switch (stopinfo->draggable->point_type) { case POINT_LG_BEGIN: { SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop)); SPLinearGradient *lg = SP_LINEARGRADIENT(stopinfo->gradient); Geom::Point oldbegin = Geom::Point (lg->x1.computed, lg->y1.computed); Geom::Point end = Geom::Point (lg->x2.computed, lg->y2.computed); SPStop *stop = stopinfo->vector->getFirstStop(); gdouble offset = stop->offset; Geom::Point newbegin = oldbegin + offset * (end - oldbegin); lg->x1.computed = newbegin[Geom::X]; lg->y1.computed = newbegin[Geom::Y]; Inkscape::XML::Node *repr = SP_OBJECT_REPR(stopinfo->gradient); sp_repr_set_svg_double(repr, "x1", lg->x1.computed); sp_repr_set_svg_double(repr, "y1", lg->y1.computed); stop->offset = 0; sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", 0); // iterate through midstops to set new offset values such that they won't move on canvas. SPStop *laststop = sp_last_stop(stopinfo->vector); stop = stop->getNextStop(); while ( stop != laststop ) { stop->offset = (stop->offset - offset)/(1 - offset); sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", stop->offset); stop = stop->getNextStop(); } } break; case POINT_LG_END: { SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop)); SPLinearGradient *lg = SP_LINEARGRADIENT(stopinfo->gradient); Geom::Point begin = Geom::Point (lg->x1.computed, lg->y1.computed); Geom::Point oldend = Geom::Point (lg->x2.computed, lg->y2.computed); SPStop *laststop = sp_last_stop(stopinfo->vector); gdouble offset = laststop->offset; Geom::Point newend = begin + offset * (oldend - begin); lg->x2.computed = newend[Geom::X]; lg->y2.computed = newend[Geom::Y]; Inkscape::XML::Node *repr = SP_OBJECT_REPR(stopinfo->gradient); sp_repr_set_svg_double(repr, "x2", lg->x2.computed); sp_repr_set_svg_double(repr, "y2", lg->y2.computed); laststop->offset = 1; sp_repr_set_css_double (SP_OBJECT_REPR (laststop), "offset", 1); // iterate through midstops to set new offset values such that they won't move on canvas. SPStop *stop = stopinfo->vector->getFirstStop(); stop = stop->getNextStop(); while ( stop != laststop ) { stop->offset = stop->offset / offset; sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", stop->offset); stop = stop->getNextStop(); } } break; case POINT_RG_CENTER: { SPStop *newfirst = stopinfo->spstop->getNextStop(); if (newfirst) { newfirst->offset = 0; sp_repr_set_css_double (SP_OBJECT_REPR (newfirst), "offset", 0); } SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop)); } break; case POINT_RG_R1: case POINT_RG_R2: SP_OBJECT_REPR(stopinfo->vector)->removeChild(SP_OBJECT_REPR(stopinfo->spstop)); SPRadialGradient *rg = SP_RADIALGRADIENT(stopinfo->gradient); double oldradius = rg->r.computed; SPStop *laststop = sp_last_stop(stopinfo->vector); gdouble offset = laststop->offset; double newradius = offset * oldradius; rg->r.computed = newradius; Inkscape::XML::Node *repr = SP_OBJECT_REPR(rg); sp_repr_set_svg_double(repr, "r", rg->r.computed); laststop->offset = 1; sp_repr_set_css_double (SP_OBJECT_REPR (laststop), "offset", 1); // iterate through midstops to set new offset values such that they won't move on canvas. SPStop *stop = stopinfo->vector->getFirstStop(); stop = stop->getNextStop(); while ( stop != laststop ) { stop->offset = stop->offset / offset; sp_repr_set_css_double (SP_OBJECT_REPR (stop), "offset", stop->offset); stop = stop->getNextStop(); } break; } } else { // delete the gradient from the object. set fill to unset FIXME: set to fill of unselected node? SPCSSAttr *css = sp_repr_css_attr_new (); // stopinfo->spstop is the selected stop Inkscape::XML::Node *unselectedrepr = SP_OBJECT_REPR(stopinfo->vector)->firstChild(); if (unselectedrepr == SP_OBJECT_REPR(stopinfo->spstop) ) { unselectedrepr = unselectedrepr->next(); } if (unselectedrepr == NULL) { if (stopinfo->draggable->fill_or_stroke) { sp_repr_css_unset_property (css, "fill"); } else { sp_repr_css_unset_property (css, "stroke"); } } else { SPCSSAttr *stopcss = sp_repr_css_attr(unselectedrepr, "style"); if (stopinfo->draggable->fill_or_stroke) { sp_repr_css_set_property(css, "fill", sp_repr_css_property(stopcss, "stop-color", "inkscape:unset")); sp_repr_css_set_property(css, "fill-opacity", sp_repr_css_property(stopcss, "stop-opacity", "1")); } else { sp_repr_css_set_property(css, "stroke", sp_repr_css_property(stopcss, "stop-color", "inkscape:unset")); sp_repr_css_set_property(css, "stroke-opacity", sp_repr_css_property(stopcss, "stop-opacity", "1")); } sp_repr_css_attr_unref (stopcss); } sp_repr_css_change (SP_OBJECT_REPR (stopinfo->draggable->item), css, "style"); sp_repr_css_attr_unref (css); } endstoplist = g_slist_remove(endstoplist, stopinfo); delete stopinfo; } if (document) { sp_document_done ( document, SP_VERB_CONTEXT_GRADIENT, _("Delete gradient stop(s)") ); } } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :