#define __SELTRANS_C__ /* * Helper object for transforming selected items * * Author: * Lauris Kaplinski * bulia byak * Carl Hetherington * * Copyright (C) 1999-2002 Lauris Kaplinski * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include #include #include #include #include #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 #include "display/sp-ctrlline.h" #include "prefs-utils.h" #include "xml/repr.h" #include "isnan.h" //temp fix. make sure included last 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, NR::Point *position, guint32 state, gpointer data); static gboolean sp_sel_trans_handle_request(SPKnot *knot, NR::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(NR::Nothing()), _approximate_bbox(NR::Nothing()), _chandle(NULL), _stamp_cache(NULL), _message_context(desktop->messageStack()) { gchar const *prefs_bbox = prefs_get_string_attribute("tools.select", "bounding_box"); _snap_bbox_type = (prefs_bbox != NULL && strcmp(prefs_bbox, "geometric")==0)? SPItem::GEOMETRIC_BBOX : SPItem::APPROXIMATE_BBOX; g_return_if_fail(desktop != NULL); for (int i = 0; i < 8; i++) { _shandle[i] = NULL; _rhandle[i] = NULL; } _updateVolatileState(); _current.set_identity(); _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].first), NULL); } _items.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(NR::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(NR::Point const &p, gdouble x, gdouble y, bool show_handles) { Inkscape::Selection *selection = sp_desktop_selection(_desktop); g_return_if_fail(!_grabbed); _grabbed = true; _show_handles = show_handles; _updateVolatileState(); _current.set_identity(); _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(std::pair(it, sp_item_i2d_affine(it))); _items_centers.push_back(std::pair(it, it->getCenter())); // for content-dragging, we need to remember original centers } _current.set_identity(); _point = p; // The selector tool should snap the bbox and the special snappoints, but not path nodes // (The special points are the handles, center, rotation axis, font baseline, ends of spiral, etc.) // First, determine the bounding box for snapping ... _bbox = selection->bounds(_snap_bbox_type); _approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX); // Used for correctly scaling the strokewidth // Next, get all special points for snapping _snap_points = selection->getSnapPoints(); // Excludes path nodes std::vector snap_points_hull = selection->getSnapPointsConvexHull(); // Includes path nodes if (_snap_points.size() > 100) { /* 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 */ _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 NR::Rect snap_points_bbox; if ( snap_points_hull.empty() == false ) { std::vector::iterator i = snap_points_hull.begin(); snap_points_bbox = NR::Rect(*i, *i); i++; while (i != snap_points_hull.end()) { snap_points_bbox.expandTo(*i); i++; } } _bbox_points.clear(); if (_bbox) { // ... and add the bbox corners to _bbox_points for ( unsigned i = 0 ; i < 4 ; i++ ) { _bbox_points.push_back(_bbox->corner(i)); } // 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 #1540195 (in which // a box is caught between to guides) _opposite_for_bboxpoints = _bbox->min() + _bbox->dimensions() * NR::scale(1-x, 1-y); _opposite_for_specpoints = (snap_points_bbox.min() + (snap_points_bbox.dimensions() * NR::scale(1-x, 1-y) ) ); // Only a single "opposite" can be used in calculating transformations. _opposite = _opposite_for_bboxpoints; } /*std::cout << "Number of snap points: " << _snap_points.size() << std::endl; for (std::vector::const_iterator i = _snap_points.begin(); i != _snap_points.end(); i++) { std::cout << " " << *i << std::endl; } std::cout << "Number of bbox points: " << _bbox_points.size() << std::endl; for (std::vector::const_iterator i = _bbox_points.begin(); i != _bbox_points.end(); i++) { std::cout << " " << *i << std::endl; }*/ 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(NR::Matrix const &rel_affine, NR::Point const &norm) { g_return_if_fail(_grabbed); g_return_if_fail(!_empty); NR::Matrix const affine( NR::translate(-norm) * rel_affine * NR::translate(norm) ); if (_show == SHOW_CONTENT) { // update the content for (unsigned i = 0; i < _items.size(); i++) { SPItem &item = *_items[i].first; NR::Matrix const &prev_transform = _items[i].second; sp_item_set_i2d_affine(&item, prev_transform * affine); } } else { if (_bbox) { NR::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 = affine; _changed = true; _updateHandles(); } void Inkscape::SelTrans::ungrab() { g_return_if_fail(_grabbed); _grabbed = false; _show_handles = true; Inkscape::Selection *selection = sp_desktop_selection(_desktop); _updateVolatileState(); for (unsigned i = 0; i < _items.size(); i++) { sp_object_unref(SP_OBJECT(_items[i].first), 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, (_show == SHOW_OUTLINE)? true : false); if (_center) { *_center *= _current; _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.is_translation()) { for (unsigned i = 0; i < _items_centers.size(); i++) { SPItem *currentItem = _items_centers[i].first; if (currentItem->isCenterSet()) { // only if it's already set currentItem->setCenter (_items_centers[i].second * _current); SP_OBJECT(currentItem)->updateRepr(); } } } _items.clear(); _items_centers.clear(); if (_current.is_translation()) { sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Move")); } else if (_current.is_scale()) { sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT, _("Scale")); } else if (_current.is_rotation()) { 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_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); NR::Matrix const *new_affine; if (_show == SHOW_OUTLINE) { NR::Matrix const i2d(sp_item_i2d_affine(original_item)); NR::Matrix const i2dnew( i2d * _current ); 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); } 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, _("Center 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, _("Squeeze or stretch selection; with Ctrl to scale uniformly; with Shift to scale around rotation center"), _("Scale selection; with Ctrl to scale uniformly; with Shift to scale around rotation center")); } else { sp_remove_handles(_shandle, 8); _showHandles(_rhandle, handles_rotate, 8, _("Skew selection; with Ctrl to snap angle; with Shift to skew around the opposite side"), _("Rotate selection; with Ctrl to snap angle; with Shift 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]); NR::Point const handle_pt(handle[i].x, handle[i].y); // shouldn't have nullary bbox, but knots g_assert(_bbox); NR::Point p( _bbox->min() + ( _bbox->dimensions() * NR::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, NR::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, NR::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); } void Inkscape::SelTrans::handleNewEvent(SPKnot *knot, NR::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].first)) ) { return; } } handle.action(this, handle, *position, state); } gboolean Inkscape::SelTrans::handleRequest(SPKnot *knot, NR::Point *position, guint state, SPSelTransHandle const &handle) { if (!SP_KNOT_IS_GRABBED(knot)) { return TRUE; } knot->desktop->setPosition(*position); if (state & GDK_MOD1_MASK) { *position = _point + ( *position - _point ) / 10; } 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) { // reread in case it changed on the fly: gchar const *prefs_bbox = prefs_get_string_attribute("tools.select", "bounding_box"); _snap_bbox_type = (prefs_bbox != NULL && strcmp(prefs_bbox, "geometric")==0)? SPItem::GEOMETRIC_BBOX : SPItem::APPROXIMATE_BBOX; //SPItem::APPROXIMATE_BBOX will be replaced by SPItem::VISUAL_BBOX, as soon as the latter is implemented properly _updateVolatileState(); _current.set_identity(); _center_is_set = false; // center(s) may have changed _updateHandles(); } } void Inkscape::SelTrans::_selModified(Inkscape::Selection *selection, guint flags) { if (!_grabbed) { _updateVolatileState(); _current.set_identity(); // 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. */ static double sign(double const x) { return ( x < 0 ? -1 : 1 ); } gboolean sp_sel_trans_scale_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state) { return seltrans->scaleRequest(pt, state); } gboolean sp_sel_trans_stretch_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, NR::Point &pt, guint state) { return seltrans->stretchRequest(handle, pt, state); } gboolean sp_sel_trans_skew_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, NR::Point &pt, guint state) { return seltrans->skewRequest(handle, pt, state); } gboolean sp_sel_trans_rotate_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state) { return seltrans->rotateRequest(pt, state); } gboolean sp_sel_trans_center_request(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state) { return seltrans->centerRequest(pt, state); } gboolean Inkscape::SelTrans::scaleRequest(NR::Point &pt, guint state) { using NR::X; using NR::Y; NR::Point d = _point - _origin; NR::scale s(0, 0); /* Work out the new scale factors `s' */ for ( unsigned int i = 0 ; i < 2 ; i++ ) { if ( fabs(d[i]) > 0.001 ) { s[i] = ( pt[i] - _origin[i] ) / d[i]; if ( fabs(s[i]) < 1e-9 ) { s[i] = 1e-9; } } } SnapManager const &m = _desktop->namedview->snap_manager; /* Get a STL list of the selected items. ** FIXME: this should probably be done by Inkscape::Selection. */ std::list it; for (GSList const *i = _selection->itemList(); i != NULL; i = i->next) { it.push_back(reinterpret_cast(i->data)); } 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(s[NR::X]) > fabs(s[NR::Y])) { s[NR::X] = fabs(s[NR::Y]) * sign(s[NR::X]); } else { s[NR::Y] = fabs(s[NR::X]) * sign(s[NR::Y]); } // Snap along a suitable constraint vector from the origin. // The inclination of the constraint vector is calculated from the aspect ratio NR::Point bbox_dim = _bbox->dimensions(); double const aspect_ratio = bbox_dim[1] / bbox_dim[0]; // = height / width // Determine direction of the constraint vector NR::Point const cv = NR::Point( pt[NR::X] > _origin[NR::X] ? 1 : -1, pt[NR::Y] > _origin[NR::Y] ? aspect_ratio : -aspect_ratio ); std::pair bb = m.constrainedSnapScale(Snapper::BBOX_POINT, _bbox_points, it, Snapper::ConstraintLine(_origin_for_bboxpoints, cv), s, _origin_for_bboxpoints); std::pair sn = m.constrainedSnapScale(Snapper::SNAP_POINT, _snap_points, it, Snapper::ConstraintLine(_origin_for_specpoints, cv), s, _origin_for_specpoints); if (bb.second == false && sn.second == false) { /* We didn't snap, so just keep the locked aspect ratio */ } else { /* Choose the smaller difference in scale. Since s[X] == s[Y] we can ** just compare difference in s[X]. */ double const bd = bb.second ? fabs(bb.first[NR::X] - s[NR::X]) : NR_HUGE; double const sd = sn.second ? fabs(sn.first[NR::X] - s[NR::X]) : NR_HUGE; s = (bd < sd) ? bb.first : sn.first; } } else { /* Scale aspect ratio is unlocked */ std::pair bb = m.freeSnapScale(Snapper::BBOX_POINT, _bbox_points, it, s, _origin_for_bboxpoints); std::pair sn = m.freeSnapScale(Snapper::SNAP_POINT, _snap_points, it, s, _origin_for_specpoints); /* Pick the snap that puts us closest to the original scale */ NR::Coord bd = bb.second ? fabs(NR::L2(NR::Point(bb.first[NR::X], bb.first[NR::Y])) - NR::L2(NR::Point(s[NR::X], s[NR::Y]))) : NR_HUGE; NR::Coord sd = sn.second ? fabs(NR::L2(NR::Point(sn.first[NR::X], sn.first[NR::Y])) - NR::L2(NR::Point(s[NR::X], s[NR::Y]))) : NR_HUGE; s = (bd < sd) ? bb.first : sn.first; } /* Update the knot position */ pt = ( _point - _origin ) * s + _origin; /* Status text */ _message_context.setF(Inkscape::NORMAL_MESSAGE, _("Scale: %0.2f%% x %0.2f%%; with Ctrl to lock ratio"), 100 * s[NR::X], 100 * s[NR::Y]); return TRUE; } gboolean Inkscape::SelTrans::stretchRequest(SPSelTransHandle const &handle, NR::Point &pt, guint state) { using NR::X; using NR::Y; NR::Dim2 axis, perp; switch (handle.cursor) { case GDK_TOP_SIDE: case GDK_BOTTOM_SIDE: axis = NR::Y; perp = NR::X; break; case GDK_LEFT_SIDE: case GDK_RIGHT_SIDE: axis = NR::X; perp = NR::Y; break; default: g_assert_not_reached(); return TRUE; }; if ( fabs( _point[axis] - _origin[axis] ) < 1e-15 ) { return FALSE; } NR::scale s(1, 1); s[axis] = ( ( pt[axis] - _origin[axis] ) / ( _point[axis] - _origin[axis] ) ); if ( fabs(s[axis]) < 1e-15 ) { s[axis] = 1e-15; } /* Get a STL list of the selected items. ** FIXME: this should probably be done by Inkscape::Selection. */ std::list it; for (GSList const *i = _selection->itemList(); i != NULL; i = i->next) { it.push_back(reinterpret_cast(i->data)); } SnapManager const &m = _desktop->namedview->snap_manager; if ( state & GDK_CONTROL_MASK ) { // on ctrl, apply symmetrical scaling instead of stretching s[perp] = fabs(s[axis]); std::pair const bb = m.freeSnapStretch( Snapper::BBOX_POINT, _bbox_points, it, s[axis], _origin_for_bboxpoints, axis, true); std::pair const sn = m.freeSnapStretch( Snapper::SNAP_POINT, _snap_points, it, s[axis], _origin_for_specpoints, axis, true); NR::Coord const bd = bb.second ? fabs(bb.first - s[axis]) : NR_HUGE; NR::Coord const sd = sn.second ? fabs(sn.first - s[axis]) : NR_HUGE; NR::Coord const ratio = (bd < sd) ? bb.first : sn.first; s[axis] = fabs(ratio) * sign(s[axis]); s[perp] = fabs(s[axis]); } else { std::pair const bb = m.freeSnapStretch( Snapper::BBOX_POINT, _bbox_points, it, s[axis], _origin_for_bboxpoints, axis, false); std::pair const sn = m.freeSnapStretch( Snapper::SNAP_POINT, _snap_points, it, s[axis], _origin_for_specpoints, axis, false); /* Choose the smaller difference in scale */ NR::Coord const bd = bb.second ? fabs(bb.first - s[axis]) : NR_HUGE; NR::Coord const sd = sn.second ? fabs(sn.first - s[axis]) : NR_HUGE; s[axis] = (bd < sd) ? bb.first : sn.first; s[perp] = 1; } pt = ( _point - _origin ) * NR::scale(s) + _origin; if (isNaN(pt[X] + pt[Y])) { g_warning("point=(%g, %g), norm=(%g, %g), s=(%g, %g)\n", _point[X], _point[Y], _origin[X], _origin[Y], s[X], s[Y]); } // status text _message_context.setF(Inkscape::NORMAL_MESSAGE, _("Scale: %0.2f%% x %0.2f%%; with Ctrl to lock ratio"), 100 * s[NR::X], 100 * s[NR::Y]); return TRUE; } gboolean Inkscape::SelTrans::skewRequest(SPSelTransHandle const &handle, NR::Point &pt, guint state) { using NR::X; using NR::Y; if (handle.cursor != GDK_SB_V_DOUBLE_ARROW && handle.cursor != GDK_SB_H_DOUBLE_ARROW) { return FALSE; } NR::Dim2 dim_a; NR::Dim2 dim_b; if (handle.cursor == GDK_SB_V_DOUBLE_ARROW) { dim_a = X; dim_b = Y; } else { dim_a = Y; dim_b = X; } double skew[2]; double s[2] = { 1.0, 1.0 }; if (fabs(_point[dim_a] - _origin[dim_a]) < NR_EPSILON) { return FALSE; } skew[dim_a] = ( pt[dim_b] - _point[dim_b] ) / ( _point[dim_a] - _origin[dim_a] ); s[dim_a] = ( pt[dim_a] - _origin[dim_a] ) / ( _point[dim_a] - _origin[dim_a] ); if ( fabs(s[dim_a]) < 1 ) { s[dim_a] = sign(s[dim_a]); } else { s[dim_a] = floor( s[dim_a] + 0.5 ); } double radians = atan(skew[dim_a] / s[dim_a]); if (state & GDK_CONTROL_MASK) { int snaps = prefs_get_int_attribute("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) * s[dim_a]; } else { SnapManager const &m = _desktop->namedview->snap_manager; std::pair bb = m.freeSnapSkew(Inkscape::Snapper::BBOX_POINT, _bbox_points, std::list(), skew[dim_a], _origin_for_bboxpoints, dim_b); std::pair sn = m.freeSnapSkew(Inkscape::Snapper::SNAP_POINT, _snap_points, std::list(), skew[dim_a], _origin_for_specpoints, dim_b); if (bb.second || sn.second) { /* We snapped something, so change the skew to reflect it */ NR::Coord const bd = bb.second ? bb.first : NR_HUGE; NR::Coord const sd = sn.second ? sn.first : NR_HUGE; skew[dim_a] = std::min(bd, sd); } } pt[dim_b] = ( _point[dim_a] - _origin[dim_a] ) * skew[dim_a] + _point[dim_b]; pt[dim_a] = ( _point[dim_a] - _origin[dim_a] ) * s[dim_a] + _origin[dim_a]; /* status text */ double degrees = 180 / M_PI * radians; if (degrees > 180) degrees -= 360; if (degrees < -180) degrees += 360; _message_context.setF(Inkscape::NORMAL_MESSAGE, // TRANSLATORS: don't modify the first ";" // (it will NOT be displayed as ";" - only the second one will be) _("Skew: %0.2f°; with Ctrl to snap angle"), degrees); return TRUE; } gboolean Inkscape::SelTrans::rotateRequest(NR::Point &pt, guint state) { int snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12); // rotate affine in rotate NR::Point const d1 = _point - _origin; NR::Point const d2 = pt - _origin; NR::Coord const h1 = NR::L2(d1); if (h1 < 1e-15) return FALSE; NR::Point q1 = d1 / h1; NR::Coord const h2 = NR::L2(d2); if (fabs(h2) < 1e-15) return FALSE; NR::Point q2 = d2 / h2; double radians; if (state & GDK_CONTROL_MASK) { /* Have to restrict movement. */ double cos_t = NR::dot(q1, q2); double sin_t = NR::dot(NR::rot90(q1), q2); radians = atan2(sin_t, cos_t); if (snaps) { radians = ( M_PI / snaps ) * floor( radians * snaps / M_PI + .5 ); } q1 = NR::Point(1, 0); q2 = NR::Point(cos(radians), sin(radians)); } else { radians = atan2(NR::dot(NR::rot90(d1), d2), NR::dot(d1, d2)); } NR::rotate const r1(q1); NR::rotate const r2(q2); pt = _point * NR::translate(-_origin) * ( r2 / r1 ) * NR::translate(_origin); /* status text */ double degrees = 180 / M_PI * radians; if (degrees > 180) degrees -= 360; if (degrees < -180) degrees += 360; _message_context.setF(Inkscape::NORMAL_MESSAGE, // TRANSLATORS: don't modify the first ";" // (it will NOT be displayed as ";" - only the second one will be) _("Rotate: %0.2f°; with Ctrl to snap angle"), degrees); return TRUE; } gboolean Inkscape::SelTrans::centerRequest(NR::Point &pt, guint state) { using NR::X; using NR::Y; SnapManager const &m = _desktop->namedview->snap_manager; pt = m.freeSnap(Snapper::SNAP_POINT, pt, NULL).getPoint(); if (state & GDK_CONTROL_MASK) { if ( fabs(_point[X] - pt[X]) > fabs(_point[Y] - pt[Y]) ) { pt[Y] = _point[Y]; } else { pt[X] = _point[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[X], _desktop->namedview->getDefaultMetric()); GString *ys = SP_PX_TO_METRIC_STRING(pt[Y], _desktop->namedview->getDefaultMetric()); _message_context.setF(Inkscape::NORMAL_MESSAGE, _("Move center 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, NR::Point &pt, guint state) { seltrans->stretch(handle, pt, state); } void sp_sel_trans_scale(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state) { seltrans->scale(pt, state); } void sp_sel_trans_skew(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, NR::Point &pt, guint state) { seltrans->skew(handle, pt, state); } void sp_sel_trans_rotate(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state) { seltrans->rotate(pt, state); } void Inkscape::SelTrans::stretch(SPSelTransHandle const &handle, NR::Point &pt, guint state) { using NR::X; using NR::Y; NR::Dim2 dim; switch (handle.cursor) { case GDK_LEFT_SIDE: case GDK_RIGHT_SIDE: dim = X; break; case GDK_TOP_SIDE: case GDK_BOTTOM_SIDE: dim = Y; break; default: g_assert_not_reached(); abort(); break; } NR::Point const scale_origin(_origin); double const offset = _point[dim] - scale_origin[dim]; if (!( fabs(offset) >= 1e-15 )) { return; } NR::scale s(1, 1); s[dim] = ( pt[dim] - scale_origin[dim] ) / offset; if (isNaN(s[dim])) { g_warning("s[dim]=%g, pt[dim]=%g, scale_origin[dim]=%g, point[dim]=%g\n", s[dim], pt[dim], scale_origin[dim], _point[dim]); } if (!( fabs(s[dim]) >= 1e-15 )) { s[dim] = 1e-15; } if (state & GDK_CONTROL_MASK) { /* Preserve aspect ratio, but never flip in the dimension not being edited. */ s[!dim] = fabs(s[dim]); } if (!_bbox) { return; } NR::Point new_bbox_min = _approximate_bbox->min() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin)); NR::Point new_bbox_max = _approximate_bbox->max() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin)); int transform_stroke = false; gdouble strokewidth = 0; if ( _snap_bbox_type != SPItem::GEOMETRIC_BBOX) { transform_stroke = prefs_get_int_attribute ("options.transform", "stroke", 1); strokewidth = _strokewidth; } NR::Matrix scaler = get_scale_transform_with_stroke (*_approximate_bbox, strokewidth, transform_stroke, new_bbox_min[NR::X], new_bbox_min[NR::Y], new_bbox_max[NR::X], new_bbox_max[NR::Y]); transform(scaler, NR::Point(0, 0)); // we have already accounted for origin, so pass 0,0 } void Inkscape::SelTrans::scale(NR::Point &pt, guint state) { if (!_bbox) { return; } NR::Point const offset = _point - _origin; NR::scale s (1, 1); for (int i = NR::X; i <= NR::Y; i++) { if (fabs(offset[i]) > 1e-9) s[i] = (pt[i] - _origin[i]) / offset[i]; if (fabs(s[i]) < 1e-9) s[i] = 1e-9; } NR::Point new_bbox_min = _approximate_bbox->min() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin)); NR::Point new_bbox_max = _approximate_bbox->max() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin)); int transform_stroke = false; gdouble strokewidth = 0; if ( _snap_bbox_type != SPItem::GEOMETRIC_BBOX) { transform_stroke = prefs_get_int_attribute ("options.transform", "stroke", 1); strokewidth = _strokewidth; } NR::Matrix scaler = get_scale_transform_with_stroke (*_approximate_bbox, strokewidth, transform_stroke, new_bbox_min[NR::X], new_bbox_min[NR::Y], new_bbox_max[NR::X], new_bbox_max[NR::Y]); transform(scaler, NR::Point(0, 0)); // we have already accounted for origin, so pass 0,0 } void Inkscape::SelTrans::skew(SPSelTransHandle const &handle, NR::Point &pt, guint state) { NR::Point const offset = _point - _origin; unsigned dim; switch (handle.cursor) { case GDK_SB_H_DOUBLE_ARROW: dim = NR::Y; break; case GDK_SB_V_DOUBLE_ARROW: dim = NR::X; break; default: g_assert_not_reached(); abort(); break; } if (fabs(offset[dim]) < 1e-15) { return; } NR::Matrix skew = NR::identity(); skew[2*dim + dim] = (pt[dim] - _origin[dim]) / offset[dim]; skew[2*dim + (1-dim)] = (pt[1-dim] - _point[1-dim]) / offset[dim]; skew[2*(1-dim) + (dim)] = 0; skew[2*(1-dim) + (1-dim)] = 1; for (int i = 0; i < 2; i++) { if (fabs(skew[3*i]) < 1e-15) { skew[3*i] = 1e-15; } } transform(skew, _origin); } void Inkscape::SelTrans::rotate(NR::Point &pt, guint state) { NR::Point const offset = _point - _origin; NR::Coord const h1 = NR::L2(offset); if (h1 < 1e-15) { return; } NR::Point const q1 = offset / h1; NR::Coord const h2 = NR::L2( pt - _origin ); if (h2 < 1e-15) { return; } NR::Point const q2 = (pt - _origin) / h2; NR::rotate const r1(q1); NR::rotate const r2(q2); NR::Matrix rotate( r2 / r1 ); transform(rotate, _origin); } void sp_sel_trans_center(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state) { seltrans->setCenter(pt); } void Inkscape::SelTrans::moveTo(NR::Point const &xy, guint state) { SnapManager const &m = _desktop->namedview->snap_manager; /* The amount that we've moved by during this drag */ NR::Point dxy = xy - _point; /* Get a STL list of the selected items. ** FIXME: this should probably be done by Inkscape::Selection. */ std::list it; for (GSList const *i = _selection->itemList(); i != NULL; i = i->next) { it.push_back(reinterpret_cast(i->data)); } 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. */ dxy = m.freeSnap(Snapper::SNAP_POINT, dxy, NULL).getPoint(); } else if (!shift) { /* 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. */ /* This will be our list of possible translations */ std::list > s; if (control) { /* Snap to things, and also constrain to horizontal or vertical movement */ for (unsigned int dim = 0; dim < 2; dim++) { s.push_back(m.constrainedSnapTranslation(Inkscape::Snapper::BBOX_POINT, _bbox_points, it, Inkscape::Snapper::ConstraintLine(component_vectors[dim]), dxy)); s.push_back(m.constrainedSnapTranslation(Inkscape::Snapper::SNAP_POINT, _snap_points, it, Inkscape::Snapper::ConstraintLine(component_vectors[dim]), dxy)); } } else { /* Snap to things with no constraint */ s.push_back(m.freeSnapTranslation(Inkscape::Snapper::BBOX_POINT, _bbox_points, it, dxy)); s.push_back(m.freeSnapTranslation(Inkscape::Snapper::SNAP_POINT, _snap_points, it, dxy)); } /* Pick one */ NR::Coord best = NR_HUGE; for (std::list >::const_iterator i = s.begin(); i != s.end(); i++) { if (i->second) { NR::Coord const m = NR::L2(i->first); if (m < best) { best = m; dxy = i->first; } } } } if (control) { /* Ensure that the horizontal and vertical constraint has been applied */ if (fabs(dxy[NR::X]) > fabs(dxy[NR::Y])) { dxy[NR::Y] = 0; } else { dxy[NR::X] = 0; } } NR::Matrix const move((NR::translate(dxy))); NR::Point const norm(0, 0); transform(move, norm); // status text GString *xs = SP_PX_TO_METRIC_STRING(dxy[NR::X], _desktop->namedview->getDefaultMetric()); GString *ys = SP_PX_TO_METRIC_STRING(dxy[NR::Y], _desktop->namedview->getDefaultMetric()); _message_context.setF(Inkscape::NORMAL_MESSAGE, _("Move by %s, %s; with Ctrl to restrict to horizontal/vertical; with Shift to disable snapping"), xs->str, ys->str); g_string_free(xs, TRUE); g_string_free(ys, TRUE); } /* 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 :