/** @file * @brief Helper object for transforming selected items */ /* Authors: * Lauris Kaplinski <lauris@kaplinski.com> * bulia byak <buliabyak@users.sf.net> * Carl Hetherington <inkscape@carlh.net> * Diederik van Lierop <mail@diedenrezi.nl> * * Copyright (C) 1999-2002 Lauris Kaplinski * Copyright (C) 1999-2008 Authors * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H # include <config.h> #endif #include <cstring> #include <string> #include <2geom/transforms.h> #include <gdk/gdkkeysyms.h> #include "document.h" #include "sp-namedview.h" #include "desktop.h" #include "desktop-handles.h" #include "desktop-style.h" #include "knot.h" #include "snap.h" #include "selection.h" #include "select-context.h" #include "sp-item.h" #include "sp-item-transform.h" #include "seltrans-handles.h" #include "seltrans.h" #include "selection-chemistry.h" #include "sp-metrics.h" #include "verbs.h" #include <glibmm/i18n.h> #include "display/sp-ctrlline.h" #include "preferences.h" #include "xml/repr.h" #include "mod360.h" #include <2geom/angle.h> #include "display/snap-indicator.h" static void sp_remove_handles(SPKnot *knot[], gint num); static void sp_sel_trans_handle_grab(SPKnot *knot, guint state, gpointer data); static void sp_sel_trans_handle_ungrab(SPKnot *knot, guint state, gpointer data); static void sp_sel_trans_handle_click(SPKnot *knot, guint state, gpointer data); static void sp_sel_trans_handle_new_event(SPKnot *knot, Geom::Point *position, guint32 state, gpointer data); static gboolean sp_sel_trans_handle_request(SPKnot *knot, Geom::Point *p, guint state, gboolean *data); extern GdkPixbuf *handles[]; static gboolean sp_seltrans_handle_event(SPKnot *knot, GdkEvent *event, gpointer) { switch (event->type) { case GDK_MOTION_NOTIFY: break; case GDK_KEY_PRESS: if (get_group0_keyval (&event->key) == GDK_space) { /* stamping mode: both mode(show content and outline) operation with knot */ if (!SP_KNOT_IS_GRABBED(knot)) { return FALSE; } SPDesktop *desktop = knot->desktop; Inkscape::SelTrans *seltrans = SP_SELECT_CONTEXT(desktop->event_context)->_seltrans; seltrans->stamp(); return TRUE; } break; default: break; } return FALSE; } Inkscape::SelTrans::SelTrans(SPDesktop *desktop) : _desktop(desktop), _selcue(desktop), _state(STATE_SCALE), _show(SHOW_CONTENT), _grabbed(false), _show_handles(true), _bbox(), _approximate_bbox(), _absolute_affine(Geom::Scale(1,1)), _opposite(Geom::Point(0,0)), _opposite_for_specpoints(Geom::Point(0,0)), _opposite_for_bboxpoints(Geom::Point(0,0)), _origin_for_specpoints(Geom::Point(0,0)), _origin_for_bboxpoints(Geom::Point(0,0)), _chandle(NULL), _stamp_cache(NULL), _message_context(desktop->messageStack()) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); int prefs_bbox = prefs->getBool("/tools/bounding_box"); _snap_bbox_type = !prefs_bbox ? SPItem::APPROXIMATE_BBOX : SPItem::GEOMETRIC_BBOX; g_return_if_fail(desktop != NULL); for (int i = 0; i < 8; i++) { _shandle[i] = NULL; _rhandle[i] = NULL; } _updateVolatileState(); _current_relative_affine.setIdentity(); _center_is_set = false; // reread _center from items, or set to bbox midpoint _updateHandles(); _selection = sp_desktop_selection(desktop); _norm = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRL, "anchor", GTK_ANCHOR_CENTER, "mode", SP_CTRL_MODE_COLOR, "shape", SP_CTRL_SHAPE_BITMAP, "size", 13.0, "filled", TRUE, "fill_color", 0x00000000, "stroked", TRUE, "stroke_color", 0x000000a0, "pixbuf", handles[12], NULL); _grip = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRL, "anchor", GTK_ANCHOR_CENTER, "mode", SP_CTRL_MODE_XOR, "shape", SP_CTRL_SHAPE_CROSS, "size", 7.0, "filled", TRUE, "fill_color", 0xffffff7f, "stroked", TRUE, "stroke_color", 0xffffffff, "pixbuf", handles[12], NULL); sp_canvas_item_hide(_grip); sp_canvas_item_hide(_norm); for (int i = 0; i < 4; i++) { _l[i] = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRLLINE, NULL); sp_canvas_item_hide(_l[i]); } _sel_changed_connection = _selection->connectChanged( sigc::mem_fun(*this, &Inkscape::SelTrans::_selChanged) ); _sel_modified_connection = _selection->connectModified( sigc::mem_fun(*this, &Inkscape::SelTrans::_selModified) ); } Inkscape::SelTrans::~SelTrans() { _sel_changed_connection.disconnect(); _sel_modified_connection.disconnect(); for (unsigned int i = 0; i < 8; i++) { if (_shandle[i]) { g_object_unref(G_OBJECT(_shandle[i])); _shandle[i] = NULL; } if (_rhandle[i]) { g_object_unref(G_OBJECT(_rhandle[i])); _rhandle[i] = NULL; } } if (_chandle) { g_object_unref(G_OBJECT(_chandle)); _chandle = NULL; } if (_norm) { gtk_object_destroy(GTK_OBJECT(_norm)); _norm = NULL; } if (_grip) { gtk_object_destroy(GTK_OBJECT(_grip)); _grip = NULL; } for (int i = 0; i < 4; i++) { if (_l[i]) { gtk_object_destroy(GTK_OBJECT(_l[i])); _l[i] = NULL; } } for (unsigned i = 0; i < _items.size(); i++) { sp_object_unref(SP_OBJECT(_items[i]), NULL); } _items.clear(); _items_const.clear(); _items_affines.clear(); _items_centers.clear(); } void Inkscape::SelTrans::resetState() { _state = STATE_SCALE; } void Inkscape::SelTrans::increaseState() { if (_state == STATE_SCALE) { _state = STATE_ROTATE; } else { _state = STATE_SCALE; } _center_is_set = true; // no need to reread center _updateHandles(); } void Inkscape::SelTrans::setCenter(Geom::Point const &p) { _center = p; _center_is_set = true; // Write the new center position into all selected items for (GSList const *l = _desktop->selection->itemList(); l; l = l->next) { SPItem *it = (SPItem*)SP_OBJECT(l->data); it->setCenter(p); // only set the value; updating repr and document_done will be done once, on ungrab } _updateHandles(); } void Inkscape::SelTrans::grab(Geom::Point const &p, gdouble x, gdouble y, bool show_handles, bool translating) { // While dragging a handle, we will either scale, skew, or rotate and the "translating" parameter will be false // When dragging the selected item itself however, we will translate the selection and that parameter will be true Inkscape::Selection *selection = sp_desktop_selection(_desktop); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); g_return_if_fail(!_grabbed); _grabbed = true; _show_handles = show_handles; _updateVolatileState(); _current_relative_affine.setIdentity(); _changed = false; if (_empty) { return; } for (GSList const *l = selection->itemList(); l; l = l->next) { SPItem *it = (SPItem *)sp_object_ref(SP_OBJECT(l->data), NULL); _items.push_back(it); _items_const.push_back(it); _items_affines.push_back(sp_item_i2d_affine(it)); _items_centers.push_back(it->getCenter()); // for content-dragging, we need to remember original centers } _handle_x = x; _handle_y = y; // The selector tool should snap the bbox, special snappoints, and path nodes // (The special points are the handles, center, rotation axis, font baseline, ends of spiral, etc.) // First, determine the bounding box _bbox = selection->bounds(_snap_bbox_type); _approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX); // Used for correctly scaling the strokewidth _geometric_bbox = selection->bounds(SPItem::GEOMETRIC_BBOX); _point = p; if (_geometric_bbox) { _point_geom = _geometric_bbox->min() + _geometric_bbox->dimensions() * Geom::Scale(x, y); } else { _point_geom = p; } // Next, get all points to consider for snapping SnapManager const &m = _desktop->namedview->snap_manager; Inkscape::SnapPreferences local_snapprefs = m.snapprefs; local_snapprefs.setSnapToItemNode(true); // We should get at least the cusp nodes here. This might // have been turned off because (for example) the user only want paths as a snap target, not nodes // but as a snap source we still need some nodes though! _snap_points.clear(); _snap_points = selection->getSnapPoints(&local_snapprefs); std::vector<std::pair<Geom::Point, int> > snap_points_hull = selection->getSnapPointsConvexHull(&local_snapprefs); if (_snap_points.size() > 200) { /* Snapping a huge number of nodes will take way too long, so limit the number of snappable nodes An average user would rarely ever try to snap such a large number of nodes anyway, because (s)he could hardly discern which node would be snapping */ if (prefs->getBool("/options/snapclosestonly/value", false)) { _keepClosestPointOnly(_snap_points, p); } else { _snap_points = snap_points_hull; } // Unfortunately, by now we will have lost the font-baseline snappoints :-( } // Find bbox hulling all special points, which excludes stroke width. Here we need to include the // path nodes, for example because a rectangle which has been converted to a path doesn't have // any other special points Geom::Rect snap_points_bbox; if ( snap_points_hull.empty() == false ) { std::vector<std::pair<Geom::Point, int> >::iterator i = snap_points_hull.begin(); snap_points_bbox = Geom::Rect((*i).first, (*i).first); i++; while (i != snap_points_hull.end()) { snap_points_bbox.expandTo((*i).first); i++; } } _bbox_points.clear(); _bbox_points_for_translating.clear(); // Collect the bounding box's corners and midpoints for each selected item if (m.snapprefs.getSnapModeBBox()) { bool mp = m.snapprefs.getSnapBBoxMidpoints(); bool emp = m.snapprefs.getSnapBBoxEdgeMidpoints(); // Preferably we'd use the bbox of each selected item, instead of the bbox of the selection as a whole; for translations // this is easy to do, but when snapping the visual bbox while scaling we will have to compensate for the scaling of the // stroke width. (see get_scale_transform_with_stroke()). This however is currently only implemented for a single bbox. // That's why we have both _bbox_points_for_translating and _bbox_points. getBBoxPoints(selection->bounds(_snap_bbox_type), &_bbox_points, false, true, emp, mp); if (((_items.size() > 0) && (_items.size() < 50)) || prefs->getBool("/options/snapclosestonly/value", false)) { // More than 50 items will produce at least 200 bbox points, which might make Inkscape crawl // (see the comment a few lines above). In that case we will use the bbox of the selection as a whole for (unsigned i = 0; i < _items.size(); i++) { getBBoxPoints(sp_item_bbox_desktop(_items[i], _snap_bbox_type), &_bbox_points_for_translating, false, true, emp, mp); } } else { _bbox_points_for_translating = _bbox_points; // use the bbox points of the selection as a whole } } if (_bbox) { // There are two separate "opposites" (i.e. opposite w.r.t. the handle being dragged): // - one for snapping the boundingbox, which can be either visual or geometric // - one for snapping the special points // The "opposite" in case of a geometric boundingbox always coincides with the "opposite" for the special points // These distinct "opposites" are needed in the snapmanager to avoid bugs such as #sf1540195 (in which // a box is caught between two guides) _opposite_for_bboxpoints = _bbox->min() + _bbox->dimensions() * Geom::Scale(1-x, 1-y); _opposite_for_specpoints = snap_points_bbox.min() + snap_points_bbox.dimensions() * Geom::Scale(1-x, 1-y); _opposite = _opposite_for_bboxpoints; } // When snapping the node closest to the mouse pointer is absolutely preferred over the closest snap // (i.e. when weight == 1), then we will not even try to snap to other points and discard those other // points immediately. if (prefs->getBool("/options/snapclosestonly/value", false)) { if (m.snapprefs.getSnapModeNode()) { _keepClosestPointOnly(_snap_points, p); } else { _snap_points.clear(); // don't keep any point } if (m.snapprefs.getSnapModeBBox()) { _keepClosestPointOnly(_bbox_points, p); _keepClosestPointOnly(_bbox_points_for_translating, p); } else { _bbox_points.clear(); // don't keep any point _bbox_points_for_translating.clear(); } // Each of the three vectors of snappoints now contains either one snappoint or none at all. if (_snap_points.size() > 1 || _bbox_points.size() > 1 || _bbox_points_for_translating.size() > 1) { g_warning("Incorrect assumption encountered while finding the snap source; nothing serious, but please report to Diederik"); } // Now let's reduce this to a single closest snappoint Geom::Coord dsp = _snap_points.size() == 1 ? Geom::L2((_snap_points.at(0)).first - p) : NR_HUGE; Geom::Coord dbbp = _bbox_points.size() == 1 ? Geom::L2((_bbox_points.at(0)).first - p) : NR_HUGE; Geom::Coord dbbpft = _bbox_points_for_translating.size() == 1 ? Geom::L2((_bbox_points_for_translating.at(0)).first - p) : NR_HUGE; if (translating) { _bbox_points.clear(); if (dsp > dbbpft) { _snap_points.clear(); } else { _bbox_points_for_translating.clear(); } } else { _bbox_points_for_translating.clear(); if (dsp > dbbp) { _snap_points.clear(); } else { _bbox_points.clear(); } } if ((_snap_points.size() + _bbox_points.size() + _bbox_points_for_translating.size()) > 1) { g_warning("Checking number of snap sources failed; nothing serious, but please report to Diederik"); } // Optionally, show the snap source if (!(_state == STATE_ROTATE && x != 0.5 && y != 0.5)) { // but not when we're dragging a rotation handle, because that won't snap // Now either _bbox_points or _snap_points has a single element, the other one has zero..... or both have zero elements g_assert((_snap_points.size() + _bbox_points.size() + _bbox_points_for_translating.size()) == 1); if (m.snapprefs.getSnapEnabledGlobally()) { if (_bbox_points.size() == 1) { _desktop->snapindicator->set_new_snapsource(_bbox_points.at(0)); } else if (_bbox_points_for_translating.size() == 1) { _desktop->snapindicator->set_new_snapsource(_bbox_points_for_translating.at(0)); } else if (_snap_points.size() == 1){ _desktop->snapindicator->set_new_snapsource(_snap_points.at(0)); } } } } if ((x != -1) && (y != -1)) { sp_canvas_item_show(_norm); sp_canvas_item_show(_grip); } if (_show == SHOW_OUTLINE) { for (int i = 0; i < 4; i++) sp_canvas_item_show(_l[i]); } _updateHandles(); g_return_if_fail(_stamp_cache == NULL); } void Inkscape::SelTrans::transform(Geom::Matrix const &rel_affine, Geom::Point const &norm) { g_return_if_fail(_grabbed); g_return_if_fail(!_empty); Geom::Matrix const affine( Geom::Translate(-norm) * rel_affine * Geom::Translate(norm) ); if (_show == SHOW_CONTENT) { // update the content for (unsigned i = 0; i < _items.size(); i++) { SPItem &item = *_items[i]; Geom::Matrix const &prev_transform = _items_affines[i]; sp_item_set_i2d_affine(&item, prev_transform * affine); } } else { if (_bbox) { Geom::Point p[4]; /* update the outline */ for (unsigned i = 0 ; i < 4 ; i++) { p[i] = _bbox->corner(i) * affine; } for (unsigned i = 0 ; i < 4 ; i++) { sp_ctrlline_set_coords(SP_CTRLLINE(_l[i]), p[i], p[(i+1)%4]); } } } _current_relative_affine = affine; _changed = true; _updateHandles(); } void Inkscape::SelTrans::ungrab() { g_return_if_fail(_grabbed); _grabbed = false; _show_handles = true; _desktop->snapindicator->remove_snapsource(); Inkscape::Selection *selection = sp_desktop_selection(_desktop); _updateVolatileState(); for (unsigned i = 0; i < _items.size(); i++) { sp_object_unref(SP_OBJECT(_items[i]), NULL); } sp_canvas_item_hide(_norm); sp_canvas_item_hide(_grip); if (_show == SHOW_OUTLINE) { for (int i = 0; i < 4; i++) sp_canvas_item_hide(_l[i]); } if (_stamp_cache) { g_slist_free(_stamp_cache); _stamp_cache = NULL; } _message_context.clear(); if (!_empty && _changed) { sp_selection_apply_affine(selection, _current_relative_affine, (_show == SHOW_OUTLINE)? true : false); if (_center) { *_center *= _current_relative_affine; _center_is_set = true; } // If dragging showed content live, sp_selection_apply_affine cannot change the centers // appropriately - it does not know the original positions of the centers (all objects already have // the new bboxes). So we need to reset the centers from our saved array. if (_show != SHOW_OUTLINE && !_current_relative_affine.isTranslation()) { for (unsigned i = 0; i < _items_centers.size(); i++) { SPItem *currentItem = _items[i]; if (currentItem->isCenterSet()) { // only if it's already set currentItem->setCenter (_items_centers[i] * _current_relative_affine); SP_OBJECT(currentItem)->updateRepr(); } } } _items.clear(); _items_const.clear(); _items_affines.clear(); _items_centers.clear(); if (_current_relative_affine.isTranslation()) { sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Move")); } else if (_current_relative_affine.without_translation().isScale()) { sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Scale")); } else if (_current_relative_affine.without_translation().isRotation()) { sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Rotate")); } else { sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Skew")); } } else { if (_center_is_set) { // we were dragging center; update reprs and commit undoable action for (GSList const *l = _desktop->selection->itemList(); l; l = l->next) { SPItem *it = (SPItem*)SP_OBJECT(l->data); SP_OBJECT(it)->updateRepr(); } sp_document_done (sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Set center")); } _items.clear(); _items_const.clear(); _items_affines.clear(); _items_centers.clear(); _updateHandles(); } } /* fixme: This is really bad, as we compare positions for each stamp (Lauris) */ /* fixme: IMHO the best way to keep sort cache would be to implement timestamping at last */ void Inkscape::SelTrans::stamp() { Inkscape::Selection *selection = sp_desktop_selection(_desktop); bool fixup = !_grabbed; if ( fixup && _stamp_cache ) { // TODO - give a proper fix. Simple temproary work-around for the grab() issue g_slist_free(_stamp_cache); _stamp_cache = NULL; } /* stamping mode */ if (!_empty) { GSList *l; if (_stamp_cache) { l = _stamp_cache; } else { /* Build cache */ l = g_slist_copy((GSList *) selection->itemList()); l = g_slist_sort(l, (GCompareFunc) sp_object_compare_position); _stamp_cache = l; } while (l) { SPItem *original_item = SP_ITEM(l->data); Inkscape::XML::Node *original_repr = SP_OBJECT_REPR(original_item); // remember the position of the item gint pos = original_repr->position(); // remember parent Inkscape::XML::Node *parent = sp_repr_parent(original_repr); Inkscape::XML::Node *copy_repr = original_repr->duplicate(parent->document()); // add the new repr to the parent parent->appendChild(copy_repr); // move to the saved position copy_repr->setPosition(pos > 0 ? pos : 0); SPItem *copy_item = (SPItem *) sp_desktop_document(_desktop)->getObjectByRepr(copy_repr); Geom::Matrix const *new_affine; if (_show == SHOW_OUTLINE) { Geom::Matrix const i2d(sp_item_i2d_affine(original_item)); Geom::Matrix const i2dnew( i2d * _current_relative_affine ); sp_item_set_i2d_affine(copy_item, i2dnew); new_affine = ©_item->transform; } else { new_affine = &original_item->transform; } sp_item_write_transform(copy_item, copy_repr, *new_affine); if ( copy_item->isCenterSet() && _center ) { copy_item->setCenter(*_center * _current_relative_affine); } Inkscape::GC::release(copy_repr); l = l->next; } sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Stamp")); } if ( fixup && _stamp_cache ) { // TODO - give a proper fix. Simple temproary work-around for the grab() issue g_slist_free(_stamp_cache); _stamp_cache = NULL; } } void Inkscape::SelTrans::_updateHandles() { if ( !_show_handles || _empty ) { sp_remove_handles(_shandle, 8); sp_remove_handles(_rhandle, 8); sp_remove_handles(&_chandle, 1); return; } // center handle if ( _chandle == NULL ) { _chandle = sp_knot_new(_desktop, _("<b>Center</b> of rotation and skewing: drag to reposition; scaling with Shift also uses this center")); _chandle->setShape (SP_CTRL_SHAPE_BITMAP); _chandle->setSize (13); _chandle->setAnchor (handle_center.anchor); _chandle->setMode (SP_CTRL_MODE_XOR); _chandle->setFill(0x00000000, 0x00000000, 0x00000000); _chandle->setStroke(0x000000ff, 0xff0000b0, 0xff0000b0); _chandle->setPixbuf(handles[handle_center.control]); sp_knot_update_ctrl(_chandle); g_signal_connect(G_OBJECT(_chandle), "request", G_CALLBACK(sp_sel_trans_handle_request), (gpointer) &handle_center); g_signal_connect(G_OBJECT(_chandle), "moved", G_CALLBACK(sp_sel_trans_handle_new_event), (gpointer) &handle_center); g_signal_connect(G_OBJECT(_chandle), "grabbed", G_CALLBACK(sp_sel_trans_handle_grab), (gpointer) &handle_center); g_signal_connect(G_OBJECT(_chandle), "ungrabbed", G_CALLBACK(sp_sel_trans_handle_ungrab), (gpointer) &handle_center); g_signal_connect(G_OBJECT(_chandle), "clicked", G_CALLBACK(sp_sel_trans_handle_click), (gpointer) &handle_center); } sp_remove_handles(&_chandle, 1); if ( _state == STATE_SCALE ) { sp_remove_handles(_rhandle, 8); _showHandles(_shandle, handles_scale, 8, _("<b>Squeeze or stretch</b> selection; with <b>Ctrl</b> to scale uniformly; with <b>Shift</b> to scale around rotation center"), _("<b>Scale</b> selection; with <b>Ctrl</b> to scale uniformly; with <b>Shift</b> to scale around rotation center")); } else { sp_remove_handles(_shandle, 8); _showHandles(_rhandle, handles_rotate, 8, _("<b>Skew</b> selection; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to skew around the opposite side"), _("<b>Rotate</b> selection; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to rotate around the opposite corner")); } if (!_center_is_set) { _center = _desktop->selection->center(); _center_is_set = true; } if ( _state == STATE_SCALE || !_center ) { sp_knot_hide(_chandle); } else { sp_knot_show(_chandle); sp_knot_moveto(_chandle, *_center); } } void Inkscape::SelTrans::_updateVolatileState() { Inkscape::Selection *selection = sp_desktop_selection(_desktop); _empty = selection->isEmpty(); if (_empty) { return; } //Update the bboxes _bbox = selection->bounds(_snap_bbox_type); _approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX); if (!_bbox) { _empty = true; return; } _strokewidth = stroke_average_width (selection->itemList()); } static void sp_remove_handles(SPKnot *knot[], gint num) { for (int i = 0; i < num; i++) { if (knot[i] != NULL) { sp_knot_hide(knot[i]); } } } void Inkscape::SelTrans::_showHandles(SPKnot *knot[], SPSelTransHandle const handle[], gint num, gchar const *even_tip, gchar const *odd_tip) { g_return_if_fail( !_empty ); for (int i = 0; i < num; i++) { if (knot[i] == NULL) { knot[i] = sp_knot_new(_desktop, i % 2 ? even_tip : odd_tip); knot[i]->setShape (SP_CTRL_SHAPE_BITMAP); knot[i]->setSize (13); knot[i]->setAnchor (handle[i].anchor); knot[i]->setMode (SP_CTRL_MODE_XOR); knot[i]->setFill(0x000000ff, 0x00ff6600, 0x00ff6600); // inversion, green, green knot[i]->setStroke(0x000000ff, 0x000000ff, 0x000000ff); // inversion knot[i]->setPixbuf(handles[handle[i].control]); sp_knot_update_ctrl(knot[i]); g_signal_connect(G_OBJECT(knot[i]), "request", G_CALLBACK(sp_sel_trans_handle_request), (gpointer) &handle[i]); g_signal_connect(G_OBJECT(knot[i]), "moved", G_CALLBACK(sp_sel_trans_handle_new_event), (gpointer) &handle[i]); g_signal_connect(G_OBJECT(knot[i]), "grabbed", G_CALLBACK(sp_sel_trans_handle_grab), (gpointer) &handle[i]); g_signal_connect(G_OBJECT(knot[i]), "ungrabbed", G_CALLBACK(sp_sel_trans_handle_ungrab), (gpointer) &handle[i]); g_signal_connect(G_OBJECT(knot[i]), "event", G_CALLBACK(sp_seltrans_handle_event), (gpointer) &handle[i]); } sp_knot_show(knot[i]); Geom::Point const handle_pt(handle[i].x, handle[i].y); // shouldn't have nullary bbox, but knots g_assert(_bbox); Geom::Point p( _bbox->min() + ( _bbox->dimensions() * Geom::Scale(handle_pt) ) ); sp_knot_moveto(knot[i], p); } } static void sp_sel_trans_handle_grab(SPKnot *knot, guint state, gpointer data) { SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleGrab( knot, state, *(SPSelTransHandle const *) data ); } static void sp_sel_trans_handle_ungrab(SPKnot *knot, guint /*state*/, gpointer /*data*/) { SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->ungrab(); } static void sp_sel_trans_handle_new_event(SPKnot *knot, Geom::Point *position, guint state, gpointer data) { SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleNewEvent( knot, position, state, *(SPSelTransHandle const *) data ); } static gboolean sp_sel_trans_handle_request(SPKnot *knot, Geom::Point *position, guint state, gboolean *data) { return SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleRequest( knot, position, state, *(SPSelTransHandle const *) data ); } static void sp_sel_trans_handle_click(SPKnot *knot, guint state, gpointer data) { SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleClick( knot, state, *(SPSelTransHandle const *) data ); } void Inkscape::SelTrans::handleClick(SPKnot */*knot*/, guint state, SPSelTransHandle const &handle) { switch (handle.anchor) { case GTK_ANCHOR_CENTER: if (state & GDK_SHIFT_MASK) { // Unset the center position for all selected items for (GSList const *l = _desktop->selection->itemList(); l; l = l->next) { SPItem *it = (SPItem*)(SP_OBJECT(l->data)); it->unsetCenter(); SP_OBJECT(it)->updateRepr(); _center_is_set = false; // center has changed _updateHandles(); } sp_document_done (sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Reset center")); } break; default: break; } } void Inkscape::SelTrans::handleGrab(SPKnot *knot, guint /*state*/, SPSelTransHandle const &handle) { switch (handle.anchor) { case GTK_ANCHOR_CENTER: g_object_set(G_OBJECT(_grip), "shape", SP_CTRL_SHAPE_BITMAP, "size", 13.0, NULL); sp_canvas_item_show(_grip); break; default: g_object_set(G_OBJECT(_grip), "shape", SP_CTRL_SHAPE_CROSS, "size", 7.0, NULL); sp_canvas_item_show(_norm); sp_canvas_item_show(_grip); break; } grab(sp_knot_position(knot), handle.x, handle.y, FALSE, FALSE); } void Inkscape::SelTrans::handleNewEvent(SPKnot *knot, Geom::Point *position, guint state, SPSelTransHandle const &handle) { if (!SP_KNOT_IS_GRABBED(knot)) { return; } // in case items have been unhooked from the document, don't // try to continue processing events for them. for (unsigned int i = 0; i < _items.size(); i++) { if (!SP_OBJECT_DOCUMENT(SP_OBJECT(_items[i])) ) { return; } } handle.action(this, handle, *position, state); } gboolean Inkscape::SelTrans::handleRequest(SPKnot *knot, Geom::Point *position, guint state, SPSelTransHandle const &handle) { if (!SP_KNOT_IS_GRABBED(knot)) { return TRUE; } knot->desktop->setPosition(*position); // When holding shift while rotating or skewing, the transformation will be // relative to the point opposite of the handle; otherwise it will be relative // to the center as set for the selection if ((!(state & GDK_SHIFT_MASK) == !(_state == STATE_ROTATE)) && (&handle != &handle_center)) { _origin = _opposite; _origin_for_bboxpoints = _opposite_for_bboxpoints; _origin_for_specpoints = _opposite_for_specpoints; } else if (_center) { _origin = *_center; _origin_for_bboxpoints = *_center; _origin_for_specpoints = *_center; } else { // FIXME return TRUE; } if (handle.request(this, handle, *position, state)) { sp_knot_set_position(knot, *position, state); SP_CTRL(_grip)->moveto(*position); SP_CTRL(_norm)->moveto(_origin); } return TRUE; } void Inkscape::SelTrans::_selChanged(Inkscape::Selection */*selection*/) { if (!_grabbed) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); // reread in case it changed on the fly: int prefs_bbox = prefs->getBool("/tools/bounding_box"); _snap_bbox_type = !prefs_bbox ? SPItem::APPROXIMATE_BBOX : SPItem::GEOMETRIC_BBOX; //SPItem::APPROXIMATE_BBOX will be replaced by SPItem::VISUAL_BBOX, as soon as the latter is implemented properly _updateVolatileState(); _current_relative_affine.setIdentity(); _center_is_set = false; // center(s) may have changed _updateHandles(); } } void Inkscape::SelTrans::_selModified(Inkscape::Selection */*selection*/, guint /*flags*/) { if (!_grabbed) { _updateVolatileState(); _current_relative_affine.setIdentity(); // reset internal flag _changed = false; _center_is_set = false; // center(s) may have changed _updateHandles(); } } /* * handlers for handle move-request */ /** Returns -1 or 1 according to the sign of x. Returns 1 for 0 and NaN. */ 00933 static double sign(double const x) { return ( x < 0 ? -1 : 1 ); } gboolean sp_sel_trans_scale_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state) { return seltrans->scaleRequest(pt, state); } gboolean sp_sel_trans_stretch_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, Geom::Point &pt, guint state) { return seltrans->stretchRequest(handle, pt, state); } gboolean sp_sel_trans_skew_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, Geom::Point &pt, guint state) { return seltrans->skewRequest(handle, pt, state); } gboolean sp_sel_trans_rotate_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state) { return seltrans->rotateRequest(pt, state); } gboolean sp_sel_trans_center_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state) { return seltrans->centerRequest(pt, state); } gboolean Inkscape::SelTrans::scaleRequest(Geom::Point &pt, guint state) { // Calculate the scale factors, which can be either visual or geometric // depending on which type of bbox is currently being used (see preferences -> selector tool) Geom::Scale default_scale = calcScaleFactors(_point, pt, _origin); // Find the scale factors for the geometric bbox Geom::Point pt_geom = _getGeomHandlePos(pt); Geom::Scale geom_scale = calcScaleFactors(_point_geom, pt_geom, _origin_for_specpoints); _absolute_affine = Geom::identity(); //Initialize the scaler if (state & GDK_MOD1_MASK) { // scale by an integer multiplier/divider // We're scaling either the visual or the geometric bbox here (see the comment above) for ( unsigned int i = 0 ; i < 2 ; i++ ) { if (fabs(default_scale[i]) > 1) { default_scale[i] = round(default_scale[i]); } else if (default_scale[i] != 0) { default_scale[i] = 1/round(1/(MIN(default_scale[i], 10))); } } // Update the knot position pt = _calcAbsAffineDefault(default_scale); // When scaling by an integer, snapping is not needed } else { // In all other cases we should try to snap now SnapManager &m = _desktop->namedview->snap_manager; m.setup(_desktop, false, _items_const); Inkscape::SnappedPoint bb, sn; Geom::Coord bd(NR_HUGE); Geom::Coord sd(NR_HUGE); if ((state & GDK_CONTROL_MASK) || _desktop->isToolboxButtonActive ("lock")) { // Scale is locked to a 1:1 aspect ratio, so that s[X] must be made to equal s[Y]. // // The aspect-ratio must be locked before snapping if (fabs(default_scale[Geom::X]) > fabs(default_scale[Geom::Y])) { default_scale[Geom::X] = fabs(default_scale[Geom::Y]) * sign(default_scale[Geom::X]); geom_scale[Geom::X] = fabs(geom_scale[Geom::Y]) * sign(geom_scale[Geom::X]); } else { default_scale[Geom::Y] = fabs(default_scale[Geom::X]) * sign(default_scale[Geom::Y]); geom_scale[Geom::Y] = fabs(geom_scale[Geom::X]) * sign(geom_scale[Geom::Y]); } // Snap along a suitable constraint vector from the origin. bb = m.constrainedSnapScale(SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, default_scale, _origin_for_bboxpoints); sn = m.constrainedSnapScale(SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, geom_scale, _origin_for_specpoints); /* Choose the smaller difference in scale. Since s[X] == s[Y] we can ** just compare difference in s[X]. */ bd = bb.getSnapped() ? fabs(bb.getTransformation()[Geom::X] - default_scale[Geom::X]) : NR_HUGE; sd = sn.getSnapped() ? fabs(sn.getTransformation()[Geom::X] - geom_scale[Geom::X]) : NR_HUGE; } else { /* Scale aspect ratio is unlocked */ bb = m.freeSnapScale(SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, default_scale, _origin_for_bboxpoints); sn = m.freeSnapScale(SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, geom_scale, _origin_for_specpoints); /* Pick the snap that puts us closest to the original scale */ bd = bb.getSnapped() ? fabs(Geom::L2(bb.getTransformation()) - Geom::L2(Geom::Point(default_scale[Geom::X], default_scale[Geom::Y]))) : NR_HUGE; sd = sn.getSnapped() ? fabs(Geom::L2(sn.getTransformation()) - Geom::L2(Geom::Point(geom_scale[Geom::X], geom_scale[Geom::Y]))) : NR_HUGE; } if (!(bb.getSnapped() || sn.getSnapped())) { // We didn't snap at all! Don't update the handle position, just calculate the new transformation _calcAbsAffineDefault(default_scale); _desktop->snapindicator->remove_snaptarget(); } else if (bd < sd) { // We snapped the bbox (which is either visual or geometric) _desktop->snapindicator->set_new_snaptarget(bb); default_scale = Geom::Scale(bb.getTransformation()); // Calculate the new transformation and update the handle position pt = _calcAbsAffineDefault(default_scale); } else { _desktop->snapindicator->set_new_snaptarget(sn); // We snapped the special points (e.g. nodes), which are not at the visual bbox // The handle location however (pt) might however be at the visual bbox, so we // will have to calculate pt taking the stroke width into account geom_scale = Geom::Scale(sn.getTransformation()); pt = _calcAbsAffineGeom(geom_scale); } } /* Status text */ _message_context.setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Scale</b>: %0.2f%% x %0.2f%%; with <b>Ctrl</b> to lock ratio"), 100 * _absolute_affine[0], 100 * _absolute_affine[3]); return TRUE; } gboolean Inkscape::SelTrans::stretchRequest(SPSelTransHandle const &handle, Geom::Point &pt, guint state) { Geom::Dim2 axis, perp; switch (handle.cursor) { case GDK_TOP_SIDE: case GDK_BOTTOM_SIDE: axis = Geom::Y; perp = Geom::X; break; case GDK_LEFT_SIDE: case GDK_RIGHT_SIDE: axis = Geom::X; perp = Geom::Y; break; default: g_assert_not_reached(); return TRUE; }; // Calculate the scale factors, which can be either visual or geometric // depending on which type of bbox is currently being used (see preferences -> selector tool) Geom::Scale default_scale = calcScaleFactors(_point, pt, _origin); default_scale[perp] = 1; // Find the scale factors for the geometric bbox Geom::Point pt_geom = _getGeomHandlePos(pt); Geom::Scale geom_scale = calcScaleFactors(_point_geom, pt_geom, _origin_for_specpoints); geom_scale[perp] = 1; _absolute_affine = Geom::identity(); //Initialize the scaler if (state & GDK_MOD1_MASK) { // stretch by an integer multiplier/divider if (fabs(default_scale[axis]) > 1) { default_scale[axis] = round(default_scale[axis]); } else if (default_scale[axis] != 0) { default_scale[axis] = 1/round(1/(MIN(default_scale[axis], 10))); } // Calculate the new transformation and update the handle position pt = _calcAbsAffineDefault(default_scale); // When stretching by an integer, snapping is not needed } else { // In all other cases we should try to snap now SnapManager &m = _desktop->namedview->snap_manager; m.setup(_desktop, false, _items_const); Inkscape::SnappedPoint bb, sn; g_assert(bb.getSnapped() == false); // Check initialization to catch any regression Geom::Coord bd(NR_HUGE); Geom::Coord sd(NR_HUGE); bool symmetrical = state & GDK_CONTROL_MASK; bb = m.constrainedSnapStretch(SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, Geom::Coord(default_scale[axis]), _origin_for_bboxpoints, Geom::Dim2(axis), symmetrical); sn = m.constrainedSnapStretch(SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, Geom::Coord(geom_scale[axis]), _origin_for_specpoints, Geom::Dim2(axis), symmetrical); if (bb.getSnapped()) { // We snapped the bbox (which is either visual or geometric) bd = fabs(bb.getTransformation()[axis] - default_scale[axis]); default_scale[axis] = bb.getTransformation()[axis]; } if (sn.getSnapped()) { sd = fabs(sn.getTransformation()[axis] - geom_scale[axis]); geom_scale[axis] = sn.getTransformation()[axis]; } if (symmetrical) { // on ctrl, apply symmetrical scaling instead of stretching // Preserve aspect ratio, but never flip in the dimension not being edited (by using fabs()) default_scale[perp] = fabs(default_scale[axis]); geom_scale[perp] = fabs(geom_scale[axis]); } if (!(bb.getSnapped() || sn.getSnapped())) { // We didn't snap at all! Don't update the handle position, just calculate the new transformation _calcAbsAffineDefault(default_scale); _desktop->snapindicator->remove_snaptarget(); } else if (bd < sd) { _desktop->snapindicator->set_new_snaptarget(bb); // Calculate the new transformation and update the handle position pt = _calcAbsAffineDefault(default_scale); } else { _desktop->snapindicator->set_new_snaptarget(sn); // We snapped the special points (e.g. nodes), which are not at the visual bbox // The handle location however (pt) might however be at the visual bbox, so we // will have to calculate pt taking the stroke width into account pt = _calcAbsAffineGeom(geom_scale); } } // status text _message_context.setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Scale</b>: %0.2f%% x %0.2f%%; with <b>Ctrl</b> to lock ratio"), 100 * _absolute_affine[0], 100 * _absolute_affine[3]); return TRUE; } gboolean Inkscape::SelTrans::skewRequest(SPSelTransHandle const &handle, Geom::Point &pt, guint state) { /* When skewing (or rotating): * 1) the stroke width will not change. This makes life much easier because we don't have to * account for that (like for scaling or stretching). As a consequence, all points will * have the same origin for the transformation and for the snapping. * 2) When holding shift, the transformation will be relative to the point opposite of * the handle; otherwise it will be relative to the center as set for the selection */ Geom::Dim2 dim_a; Geom::Dim2 dim_b; switch (handle.cursor) { case GDK_SB_H_DOUBLE_ARROW: dim_a = Geom::Y; dim_b = Geom::X; break; case GDK_SB_V_DOUBLE_ARROW: dim_a = Geom::X; dim_b = Geom::Y; break; default: g_assert_not_reached(); abort(); break; } Geom::Point const initial_delta = _point - _origin; if (fabs(initial_delta[dim_a]) < 1e-15) { return false; } // Calculate the scale factors, which can be either visual or geometric // depending on which type of bbox is currently being used (see preferences -> selector tool) Geom::Scale scale = calcScaleFactors(_point, pt, _origin, false); Geom::Scale skew = calcScaleFactors(_point, pt, _origin, true); scale[dim_b] = 1; skew[dim_b] = 1; if (fabs(scale[dim_a]) < 1) { // Prevent shrinking of the selected object, while allowing mirroring scale[dim_a] = sign(scale[dim_a]); } else { // Allow expanding of the selected object by integer multiples scale[dim_a] = floor(scale[dim_a] + 0.5); } double radians = atan(skew[dim_a] / scale[dim_a]); if (state & GDK_CONTROL_MASK) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); // Snap to defined angle increments int snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12); if (snaps) { double sections = floor(radians * snaps / M_PI + .5); if (fabs(sections) >= snaps / 2) { sections = sign(sections) * (snaps / 2 - 1); } radians = (M_PI / snaps) * sections; } skew[dim_a] = tan(radians) * scale[dim_a]; } else { // Snap to objects, grids, guides SnapManager &m = _desktop->namedview->snap_manager; m.setup(_desktop, false, _items_const); Inkscape::Snapper::ConstraintLine const constraint(component_vectors[dim_b]); // When skewing, we cannot snap the corners of the bounding box, see the comment in "constrainedSnapSkew" for details Geom::Point const s(skew[dim_a], scale[dim_a]); Inkscape::SnappedPoint sn = m.constrainedSnapSkew(Inkscape::SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, constraint, s, _origin, Geom::Dim2(dim_b)); if (sn.getSnapped()) { // We snapped something, so change the skew to reflect it Geom::Coord const sd = sn.getSnapped() ? sn.getTransformation()[0] : NR_HUGE; _desktop->snapindicator->set_new_snaptarget(sn); skew[dim_a] = sd; } else { _desktop->snapindicator->remove_snaptarget(); } } // Update the handle position pt[dim_b] = initial_delta[dim_a] * skew[dim_a] + _point[dim_b]; pt[dim_a] = initial_delta[dim_a] * scale[dim_a] + _origin[dim_a]; // Calculate the relative affine _relative_affine = Geom::identity(); _relative_affine[2*dim_a + dim_a] = (pt[dim_a] - _origin[dim_a]) / initial_delta[dim_a]; _relative_affine[2*dim_a + (dim_b)] = (pt[dim_b] - _point[dim_b]) / initial_delta[dim_a]; _relative_affine[2*(dim_b) + (dim_a)] = 0; _relative_affine[2*(dim_b) + (dim_b)] = 1; for (int i = 0; i < 2; i++) { if (fabs(_relative_affine[3*i]) < 1e-15) { _relative_affine[3*i] = 1e-15; } } // Update the status text double degrees = mod360symm(Geom::rad_to_deg(radians)); _message_context.setF(Inkscape::IMMEDIATE_MESSAGE, // TRANSLATORS: don't modify the first ";" // (it will NOT be displayed as ";" - only the second one will be) _("<b>Skew</b>: %0.2f°; with <b>Ctrl</b> to snap angle"), degrees); return TRUE; } gboolean Inkscape::SelTrans::rotateRequest(Geom::Point &pt, guint state) { /* When rotating (or skewing): * 1) the stroke width will not change. This makes life much easier because we don't have to * account for that (like for scaling or stretching). As a consequence, all points will * have the same origin for the transformation and for the snapping. * 2) When holding shift, the transformation will be relative to the point opposite of * the handle; otherwise it will be relative to the center as set for the selection */ Inkscape::Preferences *prefs = Inkscape::Preferences::get(); int snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12); // rotate affine in rotate Geom::Point const d1 = _point - _origin; Geom::Point const d2 = pt - _origin; Geom::Coord const h1 = Geom::L2(d1); // initial radius if (h1 < 1e-15) return FALSE; Geom::Point q1 = d1 / h1; // normalized initial vector to handle Geom::Coord const h2 = Geom::L2(d2); // new radius if (fabs(h2) < 1e-15) return FALSE; Geom::Point q2 = d2 / h2; // normalized new vector to handle double radians; if (state & GDK_CONTROL_MASK) { // Snap to defined angle increments double cos_t = Geom::dot(q1, q2); double sin_t = Geom::dot(Geom::rot90(q1), q2); radians = atan2(sin_t, cos_t); if (snaps) { radians = ( M_PI / snaps ) * floor( radians * snaps / M_PI + .5 ); } q1 = Geom::Point(1, 0); q2 = Geom::Point(cos(radians), sin(radians)); } else { radians = atan2(Geom::dot(Geom::rot90(d1), d2), Geom::dot(d1, d2)); } Geom::Rotate const r1(q1); Geom::Rotate const r2(q2); // Calculate the relative affine _relative_affine = r2 * r1.inverse(); // Update the handle position pt = _point * Geom::Translate(-_origin) * _relative_affine * Geom::Translate(_origin); // Update the status text double degrees = mod360symm(Geom::rad_to_deg(radians)); _message_context.setF(Inkscape::IMMEDIATE_MESSAGE, // TRANSLATORS: don't modify the first ";" // (it will NOT be displayed as ";" - only the second one will be) _("<b>Rotate</b>: %0.2f°; with <b>Ctrl</b> to snap angle"), degrees); return TRUE; } // Move the item's transformation center gboolean Inkscape::SelTrans::centerRequest(Geom::Point &pt, guint state) { SnapManager &m = _desktop->namedview->snap_manager; m.setup(_desktop); m.freeSnapReturnByRef(SnapPreferences::SNAPPOINT_NODE, pt, Inkscape::SNAPSOURCE_HANDLE); if (state & GDK_CONTROL_MASK) { if ( fabs(_point[Geom::X] - pt[Geom::X]) > fabs(_point[Geom::Y] - pt[Geom::Y]) ) { pt[Geom::Y] = _point[Geom::Y]; } else { pt[Geom::X] = _point[Geom::X]; } } if ( !(state & GDK_SHIFT_MASK) && _bbox ) { // screen pixels to snap center to bbox #define SNAP_DIST 5 // FIXME: take from prefs double snap_dist = SNAP_DIST / _desktop->current_zoom(); for (int i = 0; i < 2; i++) { if (fabs(pt[i] - _bbox->min()[i]) < snap_dist) { pt[i] = _bbox->min()[i]; } if (fabs(pt[i] - _bbox->midpoint()[i]) < snap_dist) { pt[i] = _bbox->midpoint()[i]; } if (fabs(pt[i] - _bbox->max()[i]) < snap_dist) { pt[i] = _bbox->max()[i]; } } } // status text GString *xs = SP_PX_TO_METRIC_STRING(pt[Geom::X], _desktop->namedview->getDefaultMetric()); GString *ys = SP_PX_TO_METRIC_STRING(pt[Geom::Y], _desktop->namedview->getDefaultMetric()); _message_context.setF(Inkscape::NORMAL_MESSAGE, _("Move <b>center</b> to %s, %s"), xs->str, ys->str); g_string_free(xs, FALSE); g_string_free(ys, FALSE); return TRUE; } /* * handlers for handle movement * */ void sp_sel_trans_stretch(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, Geom::Point &pt, guint state) { seltrans->stretch(handle, pt, state); } void sp_sel_trans_scale(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state) { seltrans->scale(pt, state); } void sp_sel_trans_skew(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, Geom::Point &pt, guint state) { seltrans->skew(handle, pt, state); } void sp_sel_trans_rotate(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state) { seltrans->rotate(pt, state); } void Inkscape::SelTrans::stretch(SPSelTransHandle const &/*handle*/, Geom::Point &/*pt*/, guint /*state*/) { transform(_absolute_affine, Geom::Point(0, 0)); // we have already accounted for origin, so pass 0,0 } void Inkscape::SelTrans::scale(Geom::Point &/*pt*/, guint /*state*/) { transform(_absolute_affine, Geom::Point(0, 0)); // we have already accounted for origin, so pass 0,0 } void Inkscape::SelTrans::skew(SPSelTransHandle const &/*handle*/, Geom::Point &/*pt*/, guint /*state*/) { transform(_relative_affine, _origin); } void Inkscape::SelTrans::rotate(Geom::Point &/*pt*/, guint /*state*/) { transform(_relative_affine, _origin); } void sp_sel_trans_center(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint /*state*/) { seltrans->setCenter(pt); } void Inkscape::SelTrans::moveTo(Geom::Point const &xy, guint state) { SnapManager &m = _desktop->namedview->snap_manager; /* The amount that we've moved by during this drag */ Geom::Point dxy = xy - _point; bool const alt = (state & GDK_MOD1_MASK); bool const control = (state & GDK_CONTROL_MASK); bool const shift = (state & GDK_SHIFT_MASK); if (alt) { /* Alt pressed means keep offset: snap the moved distance to the grid. ** FIXME: this will snap to more than just the grid, nowadays. */ m.setup(_desktop, true, _items_const); m.freeSnapReturnByRef(SnapPreferences::SNAPPOINT_NODE, dxy, Inkscape::SNAPSOURCE_UNDEFINED); } else if (shift) { if (control) { // shift & control: constrained movement without snapping if (fabs(dxy[Geom::X]) > fabs(dxy[Geom::Y])) { dxy[Geom::Y] = 0; } else { dxy[Geom::X] = 0; } } } else { //!shift: with snapping /* We're snapping to things, possibly with a constraint to horizontal or ** vertical movement. Obtain a list of possible translations and then ** pick the smallest. */ m.setup(_desktop, false, _items_const); /* This will be our list of possible translations */ std::list<Inkscape::SnappedPoint> s; if (control) { // constrained movement with snapping /* Snap to things, and also constrain to horizontal or vertical movement */ unsigned int dim = fabs(dxy[Geom::X]) > fabs(dxy[Geom::Y]) ? Geom::X : Geom::Y; // When doing a constrained translation, all points will move in the same direction, i.e. // either horizontally or vertically. Therefore we only have to specify the direction of // the constraint-line once. The constraint lines are parallel, but might not be colinear. // Therefore we will have to set the point through which the constraint-line runs // individually for each point to be snapped; this will be handled however by _snapTransformed() s.push_back(m.constrainedSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_BBOX, _bbox_points_for_translating, _point, Inkscape::Snapper::ConstraintLine(component_vectors[dim]), dxy)); s.push_back(m.constrainedSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, Inkscape::Snapper::ConstraintLine(component_vectors[dim]), dxy)); } else { // !control // Let's leave this timer code here for a while. I'll probably need it in the near future (Diederik van Lierop) /* GTimeVal starttime; GTimeVal endtime; g_get_current_time(&starttime); */ /* Snap to things with no constraint */ s.push_back(m.freeSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_BBOX, _bbox_points_for_translating, _point, dxy)); s.push_back(m.freeSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, dxy)); /*g_get_current_time(&endtime); double elapsed = ((((double)endtime.tv_sec - starttime.tv_sec) * G_USEC_PER_SEC + (endtime.tv_usec - starttime.tv_usec))) / 1000.0; std::cout << "Time spent snapping: " << elapsed << std::endl; */ } /* Pick one */ Inkscape::SnappedPoint best_snapped_point; for (std::list<Inkscape::SnappedPoint>::const_iterator i = s.begin(); i != s.end(); i++) { if (i->getSnapped()) { if (best_snapped_point.isOtherSnapBetter(*i, true)) { best_snapped_point = *i; dxy = i->getTransformation(); } } } if (best_snapped_point.getSnapped()) { _desktop->snapindicator->set_new_snaptarget(best_snapped_point); } else { // We didn't snap, so remove any previous snap indicator _desktop->snapindicator->remove_snaptarget(); if (control) { // If we didn't snap, then we should still constrain horizontally or vertically // (When we did snap, then this constraint has already been enforced by // calling constrainedSnapTranslation() above) if (fabs(dxy[Geom::X]) > fabs(dxy[Geom::Y])) { dxy[Geom::Y] = 0; } else { dxy[Geom::X] = 0; } } } } Geom::Matrix const move((Geom::Translate(dxy))); Geom::Point const norm(0, 0); transform(move, norm); // status text GString *xs = SP_PX_TO_METRIC_STRING(dxy[Geom::X], _desktop->namedview->getDefaultMetric()); GString *ys = SP_PX_TO_METRIC_STRING(dxy[Geom::Y], _desktop->namedview->getDefaultMetric()); _message_context.setF(Inkscape::NORMAL_MESSAGE, _("<b>Move</b> by %s, %s; with <b>Ctrl</b> to restrict to horizontal/vertical; with <b>Shift</b> to disable snapping"), xs->str, ys->str); g_string_free(xs, TRUE); g_string_free(ys, TRUE); } // Given a location of a handle at the visual bounding box, find the corresponding location at the // geometrical bounding box Geom::Point Inkscape::SelTrans::_getGeomHandlePos(Geom::Point const &visual_handle_pos) { if ( _snap_bbox_type == SPItem::GEOMETRIC_BBOX) { // When the selector tool is using geometric bboxes, then the handle is already // located at one of the geometric bbox corners return visual_handle_pos; } if (!_geometric_bbox) { //_getGeomHandlePos() can only be used after _geometric_bbox has been defined! return visual_handle_pos; } // Using the Geom::Rect constructor below ensures that "min() < max()", which is important // because this will also hold for _bbox, and which is required for get_scale_transform_with_stroke() Geom::Rect new_bbox = Geom::Rect(_origin_for_bboxpoints, visual_handle_pos); // new visual bounding box // Please note that the new_bbox might in fact be just a single line, for example when stretching (in // which case the handle and origin will be aligned vertically or horizontally) Geom::Point normalized_handle_pos = (visual_handle_pos - new_bbox.min()) * Geom::Scale(new_bbox.dimensions()).inverse(); // Calculate the absolute affine while taking into account the scaling of the stroke width Inkscape::Preferences *prefs = Inkscape::Preferences::get(); bool transform_stroke = prefs->getBool("/options/transform/stroke", true); Geom::Matrix abs_affine = get_scale_transform_with_stroke (*_bbox, _strokewidth, transform_stroke, new_bbox.min()[Geom::X], new_bbox.min()[Geom::Y], new_bbox.max()[Geom::X], new_bbox.max()[Geom::Y]); // Calculate the scaled geometrical bbox Geom::Rect new_geom_bbox = Geom::Rect(_geometric_bbox->min() * abs_affine, _geometric_bbox->max() * abs_affine); // Find the location of the handle on this new geometrical bbox return normalized_handle_pos * Geom::Scale(new_geom_bbox.dimensions()) + new_geom_bbox.min(); //new position of the geometric handle } Geom::Scale Inkscape::calcScaleFactors(Geom::Point const &initial_point, Geom::Point const &new_point, Geom::Point const &origin, bool const skew) { // Work out the new scale factors for the bbox Geom::Point const initial_delta = initial_point - origin; Geom::Point const new_delta = new_point - origin; Geom::Point const offset = new_point - initial_point; Geom::Scale scale(1, 1); for ( unsigned int i = 0 ; i < 2 ; i++ ) { if ( fabs(initial_delta[i]) > 1e-6 ) { if (skew) { scale[i] = offset[1-i] / initial_delta[i]; } else { scale[i] = new_delta[i] / initial_delta[i]; } } } return scale; } // Only for scaling/stretching Geom::Point Inkscape::SelTrans::_calcAbsAffineDefault(Geom::Scale const default_scale) { Geom::Matrix abs_affine = Geom::Translate(-_origin) * Geom::Matrix(default_scale) * Geom::Translate(_origin); Geom::Point new_bbox_min = _approximate_bbox->min() * abs_affine; Geom::Point new_bbox_max = _approximate_bbox->max() * abs_affine; bool transform_stroke = false; gdouble strokewidth = 0; if ( _snap_bbox_type != SPItem::GEOMETRIC_BBOX) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); transform_stroke = prefs->getBool("/options/transform/stroke", true); strokewidth = _strokewidth; } _absolute_affine = get_scale_transform_with_stroke (*_approximate_bbox, strokewidth, transform_stroke, new_bbox_min[Geom::X], new_bbox_min[Geom::Y], new_bbox_max[Geom::X], new_bbox_max[Geom::Y]); // return the new handle position return ( _point - _origin ) * default_scale + _origin; } // Only for scaling/stretching Geom::Point Inkscape::SelTrans::_calcAbsAffineGeom(Geom::Scale const geom_scale) { _relative_affine = Geom::Matrix(geom_scale); _absolute_affine = Geom::Translate(-_origin_for_specpoints) * _relative_affine * Geom::Translate(_origin_for_specpoints); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); bool const transform_stroke = prefs->getBool("/options/transform/stroke", true); Geom::Rect visual_bbox = get_visual_bbox(_geometric_bbox, _absolute_affine, _strokewidth, transform_stroke); // return the new handle position return visual_bbox.min() + visual_bbox.dimensions() * Geom::Scale(_handle_x, _handle_y); } void Inkscape::SelTrans::_keepClosestPointOnly(std::vector<std::pair<Geom::Point, int> > &points, const Geom::Point &reference) { if (points.size() < 2) return; std::pair<Geom::Point, int> closest_point = std::make_pair(Geom::Point(NR_HUGE, NR_HUGE), SNAPSOURCE_UNDEFINED); Geom::Coord closest_dist = NR_HUGE; for(std::vector<std::pair<Geom::Point, int> >::const_iterator i = points.begin(); i != points.end(); i++) { Geom::Coord dist = Geom::L2((*i).first - reference); if (i == points.begin() || dist < closest_dist) { closest_point = *i; closest_dist = dist; } } points.clear(); points.push_back(closest_point); } /* 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:encoding=utf-8:textwidth=99 :