2
* @brief Helper object for transforming selected items
5
* Lauris Kaplinski <lauris@kaplinski.com>
6
* bulia byak <buliabyak@users.sf.net>
7
* Carl Hetherington <inkscape@carlh.net>
8
* Diederik van Lierop <mail@diedenrezi.nl>
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* Copyright (C) 1999-2002 Lauris Kaplinski
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* Copyright (C) 1999-2008 Authors
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* Released under GNU GPL, read the file 'COPYING' for more information
22
#include <2geom/transforms.h>
23
#include <gdk/gdkkeysyms.h>
25
#include "sp-namedview.h"
27
#include "desktop-handles.h"
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#include "desktop-style.h"
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#include "selection.h"
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#include "select-context.h"
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#include "sp-item-transform.h"
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#include "seltrans-handles.h"
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#include "selection-chemistry.h"
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#include "sp-metrics.h"
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#include <glibmm/i18n.h>
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#include "display/sp-ctrlline.h"
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#include "preferences.h"
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#include <2geom/angle.h>
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#include "display/snap-indicator.h"
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static void sp_remove_handles(SPKnot *knot[], gint num);
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static void sp_sel_trans_handle_grab(SPKnot *knot, guint state, gpointer data);
52
static void sp_sel_trans_handle_ungrab(SPKnot *knot, guint state, gpointer data);
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static void sp_sel_trans_handle_click(SPKnot *knot, guint state, gpointer data);
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static void sp_sel_trans_handle_new_event(SPKnot *knot, Geom::Point *position, guint32 state, gpointer data);
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static gboolean sp_sel_trans_handle_request(SPKnot *knot, Geom::Point *p, guint state, gboolean *data);
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extern GdkPixbuf *handles[];
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static gboolean sp_seltrans_handle_event(SPKnot *knot, GdkEvent *event, gpointer)
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switch (event->type) {
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case GDK_MOTION_NOTIFY:
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if (get_group0_keyval (&event->key) == GDK_space) {
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/* stamping mode: both mode(show content and outline) operation with knot */
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if (!SP_KNOT_IS_GRABBED(knot)) {
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SPDesktop *desktop = knot->desktop;
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Inkscape::SelTrans *seltrans = SP_SELECT_CONTEXT(desktop->event_context)->_seltrans;
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Inkscape::SelTrans::SelTrans(SPDesktop *desktop) :
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_absolute_affine(Geom::Scale(1,1)),
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_opposite(Geom::Point(0,0)),
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_opposite_for_specpoints(Geom::Point(0,0)),
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_opposite_for_bboxpoints(Geom::Point(0,0)),
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_origin_for_specpoints(Geom::Point(0,0)),
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_origin_for_bboxpoints(Geom::Point(0,0)),
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_message_context(desktop->messageStack())
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Inkscape::Preferences *prefs = Inkscape::Preferences::get();
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int prefs_bbox = prefs->getBool("/tools/bounding_box");
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_snap_bbox_type = !prefs_bbox ?
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SPItem::APPROXIMATE_BBOX : SPItem::GEOMETRIC_BBOX;
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g_return_if_fail(desktop != NULL);
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for (int i = 0; i < 8; i++) {
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_updateVolatileState();
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_current_relative_affine.setIdentity();
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_center_is_set = false; // reread _center from items, or set to bbox midpoint
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_selection = sp_desktop_selection(desktop);
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_norm = sp_canvas_item_new(sp_desktop_controls(desktop),
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"anchor", GTK_ANCHOR_CENTER,
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"mode", SP_CTRL_MODE_COLOR,
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"shape", SP_CTRL_SHAPE_BITMAP,
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"fill_color", 0x00000000,
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"stroke_color", 0x000000a0,
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"pixbuf", handles[12],
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_grip = sp_canvas_item_new(sp_desktop_controls(desktop),
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"anchor", GTK_ANCHOR_CENTER,
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"mode", SP_CTRL_MODE_XOR,
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"shape", SP_CTRL_SHAPE_CROSS,
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"fill_color", 0xffffff7f,
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"stroke_color", 0xffffffff,
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"pixbuf", handles[12],
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sp_canvas_item_hide(_grip);
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sp_canvas_item_hide(_norm);
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for (int i = 0; i < 4; i++) {
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_l[i] = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRLLINE, NULL);
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sp_canvas_item_hide(_l[i]);
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_sel_changed_connection = _selection->connectChanged(
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sigc::mem_fun(*this, &Inkscape::SelTrans::_selChanged)
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_sel_modified_connection = _selection->connectModified(
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sigc::mem_fun(*this, &Inkscape::SelTrans::_selModified)
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Inkscape::SelTrans::~SelTrans()
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_sel_changed_connection.disconnect();
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_sel_modified_connection.disconnect();
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for (unsigned int i = 0; i < 8; i++) {
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g_object_unref(G_OBJECT(_shandle[i]));
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g_object_unref(G_OBJECT(_rhandle[i]));
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g_object_unref(G_OBJECT(_chandle));
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gtk_object_destroy(GTK_OBJECT(_norm));
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gtk_object_destroy(GTK_OBJECT(_grip));
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for (int i = 0; i < 4; i++) {
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gtk_object_destroy(GTK_OBJECT(_l[i]));
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for (unsigned i = 0; i < _items.size(); i++) {
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sp_object_unref(SP_OBJECT(_items[i]), NULL);
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_items_const.clear();
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_items_affines.clear();
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_items_centers.clear();
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void Inkscape::SelTrans::resetState()
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_state = STATE_SCALE;
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void Inkscape::SelTrans::increaseState()
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if (_state == STATE_SCALE) {
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_state = STATE_ROTATE;
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_state = STATE_SCALE;
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_center_is_set = true; // no need to reread center
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void Inkscape::SelTrans::setCenter(Geom::Point const &p)
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_center_is_set = true;
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// Write the new center position into all selected items
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for (GSList const *l = _desktop->selection->itemList(); l; l = l->next) {
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SPItem *it = (SPItem*)SP_OBJECT(l->data);
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// only set the value; updating repr and document_done will be done once, on ungrab
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void Inkscape::SelTrans::grab(Geom::Point const &p, gdouble x, gdouble y, bool show_handles)
246
Inkscape::Selection *selection = sp_desktop_selection(_desktop);
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g_return_if_fail(!_grabbed);
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_show_handles = show_handles;
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_updateVolatileState();
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_current_relative_affine.setIdentity();
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for (GSList const *l = selection->itemList(); l; l = l->next) {
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SPItem *it = (SPItem *)sp_object_ref(SP_OBJECT(l->data), NULL);
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_items.push_back(it);
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_items_const.push_back(it);
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_items_affines.push_back(sp_item_i2d_affine(it));
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_items_centers.push_back(it->getCenter()); // for content-dragging, we need to remember original centers
272
// The selector tool should snap the bbox, special snappoints, and path nodes
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// (The special points are the handles, center, rotation axis, font baseline, ends of spiral, etc.)
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// First, determine the bounding box for snapping ...
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_bbox = selection->bounds(_snap_bbox_type);
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_approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX); // Used for correctly scaling the strokewidth
278
_geometric_bbox = selection->bounds(SPItem::GEOMETRIC_BBOX);
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if (_geometric_bbox) {
281
_point_geom = _geometric_bbox->min() + _geometric_bbox->dimensions() * Geom::Scale(x, y);
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// Next, get all points to consider for snapping
287
SnapManager const &m = _desktop->namedview->snap_manager;
288
Inkscape::SnapPreferences local_snapprefs = m.snapprefs;
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local_snapprefs.setSnapToItemNode(true); // We should get at least the cusp nodes here. This might
290
// have been turned off because (for example) the user only want paths as a snap target, not nodes
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// but as a snap source we still need some nodes though!
292
_snap_points.clear();
293
_snap_points = selection->getSnapPoints(&local_snapprefs);
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std::vector<std::pair<Geom::Point, int> > snap_points_hull = selection->getSnapPointsConvexHull(&local_snapprefs);
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if (_snap_points.size() > 100) {
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/* Snapping a huge number of nodes will take way too long, so limit the number of snappable nodes
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An average user would rarely ever try to snap such a large number of nodes anyway, because
298
(s)he could hardly discern which node would be snapping */
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_snap_points = snap_points_hull;
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// Unfortunately, by now we will have lost the font-baseline snappoints :-(
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// Find bbox hulling all special points, which excludes stroke width. Here we need to include the
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// path nodes, for example because a rectangle which has been converted to a path doesn't have
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// any other special points
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Geom::Rect snap_points_bbox;
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if ( snap_points_hull.empty() == false ) {
308
std::vector<std::pair<Geom::Point, int> >::iterator i = snap_points_hull.begin();
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snap_points_bbox = Geom::Rect((*i).first, (*i).first);
311
while (i != snap_points_hull.end()) {
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snap_points_bbox.expandTo((*i).first);
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_bbox_points.clear();
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if (m.snapprefs.getSnapModeBBox()) {
320
getBBoxPoints(_bbox, &_bbox_points, false, true, m.snapprefs.getSnapBBoxEdgeMidpoints(), m.snapprefs.getSnapBBoxMidpoints());
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// There are two separate "opposites" (i.e. opposite w.r.t. the handle being dragged):
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// - one for snapping the boundingbox, which can be either visual or geometric
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// - one for snapping the special points
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// The "opposite" in case of a geometric boundingbox always coincides with the "opposite" for the special points
326
// These distinct "opposites" are needed in the snapmanager to avoid bugs such as #sf1540195 (in which
327
// a box is caught between two guides)
328
_opposite_for_bboxpoints = _bbox->min() + _bbox->dimensions() * Geom::Scale(1-x, 1-y);
329
_opposite_for_specpoints = snap_points_bbox.min() + snap_points_bbox.dimensions() * Geom::Scale(1-x, 1-y);
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_opposite = _opposite_for_bboxpoints;
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// When snapping the node closest to the mouse pointer is absolutely preferred over the closest snap
334
// (i.e. when weight == 1), then we will not even try to snap to other points and discard those other
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// points immediately.
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Inkscape::Preferences *prefs = Inkscape::Preferences::get();
337
if (prefs->getBool("/options/snapclosestonly/value", false)) {
338
if (m.snapprefs.getSnapModeNode()) {
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_keepClosestPointOnly(_snap_points, p);
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_snap_points.clear(); // don't keep any point
344
if (m.snapprefs.getSnapModeBBox()) {
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_keepClosestPointOnly(_bbox_points, p);
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_bbox_points.clear(); // don't keep any point
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g_assert(_bbox_points.size() < 2 && _snap_points.size() < 2);
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if (_snap_points.size() == 1 && _bbox_points.size() == 1) { //both vectors can only have either one or zero elements
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// So we have exactly one bbox corner and one node left; now find out which is closest and delete the other one
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if (Geom::L2((_snap_points.at(0)).first - p) < Geom::L2((_bbox_points.at(0)).first - p)) {
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_bbox_points.clear();
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_snap_points.clear();
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// Optionally, show the snap source
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if (!(_state == STATE_ROTATE && x != 0.5 && y != 0.5)) { // but not when we're draging a rotation handle, because that won't snap
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// Now either _bbox_points or _snap_points has a single element, the other one has zero..... or both have zero elements
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g_assert((_bbox_points.size() + _snap_points.size()) < 2);
365
if (m.snapprefs.getSnapEnabledGlobally()) {
366
if (_bbox_points.size() == 1) {
367
_desktop->snapindicator->set_new_snapsource(_bbox_points.at(0));
368
} else if (_snap_points.size() == 1){
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_desktop->snapindicator->set_new_snapsource(_snap_points.at(0));
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//sp_event_context_snap_window_open(_desktop->event_context);
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if ((x != -1) && (y != -1)) {
378
sp_canvas_item_show(_norm);
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sp_canvas_item_show(_grip);
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if (_show == SHOW_OUTLINE) {
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for (int i = 0; i < 4; i++)
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sp_canvas_item_show(_l[i]);
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g_return_if_fail(_stamp_cache == NULL);
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void Inkscape::SelTrans::transform(Geom::Matrix const &rel_affine, Geom::Point const &norm)
393
g_return_if_fail(_grabbed);
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g_return_if_fail(!_empty);
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Geom::Matrix const affine( Geom::Translate(-norm) * rel_affine * Geom::Translate(norm) );
398
if (_show == SHOW_CONTENT) {
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// update the content
400
for (unsigned i = 0; i < _items.size(); i++) {
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SPItem &item = *_items[i];
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Geom::Matrix const &prev_transform = _items_affines[i];
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sp_item_set_i2d_affine(&item, prev_transform * affine);
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/* update the outline */
409
for (unsigned i = 0 ; i < 4 ; i++) {
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p[i] = _bbox->corner(i) * affine;
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for (unsigned i = 0 ; i < 4 ; i++) {
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sp_ctrlline_set_coords(SP_CTRLLINE(_l[i]), p[i], p[(i+1)%4]);
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_current_relative_affine = affine;
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void Inkscape::SelTrans::ungrab()
425
g_return_if_fail(_grabbed);
427
_show_handles = true;
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//sp_event_context_snap_window_closed(_desktop->event_context);
431
_desktop->snapindicator->remove_snapsource();
433
Inkscape::Selection *selection = sp_desktop_selection(_desktop);
434
_updateVolatileState();
436
for (unsigned i = 0; i < _items.size(); i++) {
437
sp_object_unref(SP_OBJECT(_items[i]), NULL);
440
sp_canvas_item_hide(_norm);
441
sp_canvas_item_hide(_grip);
443
if (_show == SHOW_OUTLINE) {
444
for (int i = 0; i < 4; i++)
445
sp_canvas_item_hide(_l[i]);
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g_slist_free(_stamp_cache);
453
_message_context.clear();
455
if (!_empty && _changed) {
456
sp_selection_apply_affine(selection, _current_relative_affine, (_show == SHOW_OUTLINE)? true : false);
458
*_center *= _current_relative_affine;
459
_center_is_set = true;
462
// If dragging showed content live, sp_selection_apply_affine cannot change the centers
463
// appropriately - it does not know the original positions of the centers (all objects already have
464
// the new bboxes). So we need to reset the centers from our saved array.
465
if (_show != SHOW_OUTLINE && !_current_relative_affine.isTranslation()) {
466
for (unsigned i = 0; i < _items_centers.size(); i++) {
467
SPItem *currentItem = _items[i];
468
if (currentItem->isCenterSet()) { // only if it's already set
469
currentItem->setCenter (_items_centers[i] * _current_relative_affine);
470
SP_OBJECT(currentItem)->updateRepr();
476
_items_const.clear();
477
_items_affines.clear();
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_items_centers.clear();
480
if (_current_relative_affine.isTranslation()) {
481
sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
483
} else if (_current_relative_affine.isScale()) {
484
sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
486
} else if (_current_relative_affine.isRotation()) {
487
sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
490
sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
496
if (_center_is_set) {
497
// we were dragging center; update reprs and commit undoable action
498
for (GSList const *l = _desktop->selection->itemList(); l; l = l->next) {
499
SPItem *it = (SPItem*)SP_OBJECT(l->data);
500
SP_OBJECT(it)->updateRepr();
502
sp_document_done (sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
507
_items_const.clear();
508
_items_affines.clear();
509
_items_centers.clear();
514
/* fixme: This is really bad, as we compare positions for each stamp (Lauris) */
515
/* fixme: IMHO the best way to keep sort cache would be to implement timestamping at last */
517
void Inkscape::SelTrans::stamp()
519
Inkscape::Selection *selection = sp_desktop_selection(_desktop);
521
bool fixup = !_grabbed;
522
if ( fixup && _stamp_cache ) {
523
// TODO - give a proper fix. Simple temproary work-around for the grab() issue
524
g_slist_free(_stamp_cache);
535
l = g_slist_copy((GSList *) selection->itemList());
536
l = g_slist_sort(l, (GCompareFunc) sp_object_compare_position);
541
SPItem *original_item = SP_ITEM(l->data);
542
Inkscape::XML::Node *original_repr = SP_OBJECT_REPR(original_item);
544
// remember the position of the item
545
gint pos = original_repr->position();
547
Inkscape::XML::Node *parent = sp_repr_parent(original_repr);
549
Inkscape::XML::Node *copy_repr = original_repr->duplicate(parent->document());
551
// add the new repr to the parent
552
parent->appendChild(copy_repr);
553
// move to the saved position
554
copy_repr->setPosition(pos > 0 ? pos : 0);
556
SPItem *copy_item = (SPItem *) sp_desktop_document(_desktop)->getObjectByRepr(copy_repr);
558
Geom::Matrix const *new_affine;
559
if (_show == SHOW_OUTLINE) {
560
Geom::Matrix const i2d(sp_item_i2d_affine(original_item));
561
Geom::Matrix const i2dnew( i2d * _current_relative_affine );
562
sp_item_set_i2d_affine(copy_item, i2dnew);
563
new_affine = ©_item->transform;
565
new_affine = &original_item->transform;
568
sp_item_write_transform(copy_item, copy_repr, *new_affine);
570
if ( copy_item->isCenterSet() && _center ) {
571
copy_item->setCenter(*_center * _current_relative_affine);
574
Inkscape::GC::release(copy_repr);
577
sp_document_done(sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
581
if ( fixup && _stamp_cache ) {
582
// TODO - give a proper fix. Simple temproary work-around for the grab() issue
583
g_slist_free(_stamp_cache);
588
void Inkscape::SelTrans::_updateHandles()
590
if ( !_show_handles || _empty )
592
sp_remove_handles(_shandle, 8);
593
sp_remove_handles(_rhandle, 8);
594
sp_remove_handles(&_chandle, 1);
599
if ( _chandle == NULL ) {
600
_chandle = sp_knot_new(_desktop, _("<b>Center</b> of rotation and skewing: drag to reposition; scaling with Shift also uses this center"));
602
_chandle->setShape (SP_CTRL_SHAPE_BITMAP);
603
_chandle->setSize (13);
604
_chandle->setAnchor (handle_center.anchor);
605
_chandle->setMode (SP_CTRL_MODE_XOR);
606
_chandle->setFill(0x00000000, 0x00000000, 0x00000000);
607
_chandle->setStroke(0x000000ff, 0xff0000b0, 0xff0000b0);
608
_chandle->setPixbuf(handles[handle_center.control]);
609
sp_knot_update_ctrl(_chandle);
611
g_signal_connect(G_OBJECT(_chandle), "request",
612
G_CALLBACK(sp_sel_trans_handle_request), (gpointer) &handle_center);
613
g_signal_connect(G_OBJECT(_chandle), "moved",
614
G_CALLBACK(sp_sel_trans_handle_new_event), (gpointer) &handle_center);
615
g_signal_connect(G_OBJECT(_chandle), "grabbed",
616
G_CALLBACK(sp_sel_trans_handle_grab), (gpointer) &handle_center);
617
g_signal_connect(G_OBJECT(_chandle), "ungrabbed",
618
G_CALLBACK(sp_sel_trans_handle_ungrab), (gpointer) &handle_center);
619
g_signal_connect(G_OBJECT(_chandle), "clicked",
620
G_CALLBACK(sp_sel_trans_handle_click), (gpointer) &handle_center);
623
sp_remove_handles(&_chandle, 1);
624
if ( _state == STATE_SCALE ) {
625
sp_remove_handles(_rhandle, 8);
626
_showHandles(_shandle, handles_scale, 8,
627
_("<b>Squeeze or stretch</b> selection; with <b>Ctrl</b> to scale uniformly; with <b>Shift</b> to scale around rotation center"),
628
_("<b>Scale</b> selection; with <b>Ctrl</b> to scale uniformly; with <b>Shift</b> to scale around rotation center"));
630
sp_remove_handles(_shandle, 8);
631
_showHandles(_rhandle, handles_rotate, 8,
632
_("<b>Skew</b> selection; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to skew around the opposite side"),
633
_("<b>Rotate</b> selection; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to rotate around the opposite corner"));
636
if (!_center_is_set) {
637
_center = _desktop->selection->center();
638
_center_is_set = true;
641
if ( _state == STATE_SCALE || !_center ) {
642
sp_knot_hide(_chandle);
644
sp_knot_show(_chandle);
645
sp_knot_moveto(_chandle, *_center);
649
void Inkscape::SelTrans::_updateVolatileState()
651
Inkscape::Selection *selection = sp_desktop_selection(_desktop);
652
_empty = selection->isEmpty();
659
_bbox = selection->bounds(_snap_bbox_type);
660
_approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX);
667
_strokewidth = stroke_average_width (selection->itemList());
670
static void sp_remove_handles(SPKnot *knot[], gint num)
672
for (int i = 0; i < num; i++) {
673
if (knot[i] != NULL) {
674
sp_knot_hide(knot[i]);
679
void Inkscape::SelTrans::_showHandles(SPKnot *knot[], SPSelTransHandle const handle[], gint num,
680
gchar const *even_tip, gchar const *odd_tip)
682
g_return_if_fail( !_empty );
684
for (int i = 0; i < num; i++) {
685
if (knot[i] == NULL) {
686
knot[i] = sp_knot_new(_desktop, i % 2 ? even_tip : odd_tip);
688
knot[i]->setShape (SP_CTRL_SHAPE_BITMAP);
689
knot[i]->setSize (13);
690
knot[i]->setAnchor (handle[i].anchor);
691
knot[i]->setMode (SP_CTRL_MODE_XOR);
692
knot[i]->setFill(0x000000ff, 0x00ff6600, 0x00ff6600); // inversion, green, green
693
knot[i]->setStroke(0x000000ff, 0x000000ff, 0x000000ff); // inversion
694
knot[i]->setPixbuf(handles[handle[i].control]);
695
sp_knot_update_ctrl(knot[i]);
697
g_signal_connect(G_OBJECT(knot[i]), "request",
698
G_CALLBACK(sp_sel_trans_handle_request), (gpointer) &handle[i]);
699
g_signal_connect(G_OBJECT(knot[i]), "moved",
700
G_CALLBACK(sp_sel_trans_handle_new_event), (gpointer) &handle[i]);
701
g_signal_connect(G_OBJECT(knot[i]), "grabbed",
702
G_CALLBACK(sp_sel_trans_handle_grab), (gpointer) &handle[i]);
703
g_signal_connect(G_OBJECT(knot[i]), "ungrabbed",
704
G_CALLBACK(sp_sel_trans_handle_ungrab), (gpointer) &handle[i]);
705
g_signal_connect(G_OBJECT(knot[i]), "event", G_CALLBACK(sp_seltrans_handle_event), (gpointer) &handle[i]);
707
sp_knot_show(knot[i]);
709
Geom::Point const handle_pt(handle[i].x, handle[i].y);
710
// shouldn't have nullary bbox, but knots
712
Geom::Point p( _bbox->min()
713
+ ( _bbox->dimensions()
714
* Geom::Scale(handle_pt) ) );
716
sp_knot_moveto(knot[i], p);
720
static void sp_sel_trans_handle_grab(SPKnot *knot, guint state, gpointer data)
722
SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleGrab(
723
knot, state, *(SPSelTransHandle const *) data
727
static void sp_sel_trans_handle_ungrab(SPKnot *knot, guint /*state*/, gpointer /*data*/)
729
SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->ungrab();
732
static void sp_sel_trans_handle_new_event(SPKnot *knot, Geom::Point *position, guint state, gpointer data)
734
SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleNewEvent(
735
knot, position, state, *(SPSelTransHandle const *) data
739
static gboolean sp_sel_trans_handle_request(SPKnot *knot, Geom::Point *position, guint state, gboolean *data)
741
return SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleRequest(
742
knot, position, state, *(SPSelTransHandle const *) data
746
static void sp_sel_trans_handle_click(SPKnot *knot, guint state, gpointer data)
748
SP_SELECT_CONTEXT(knot->desktop->event_context)->_seltrans->handleClick(
749
knot, state, *(SPSelTransHandle const *) data
753
void Inkscape::SelTrans::handleClick(SPKnot */*knot*/, guint state, SPSelTransHandle const &handle)
755
switch (handle.anchor) {
756
case GTK_ANCHOR_CENTER:
757
if (state & GDK_SHIFT_MASK) {
758
// Unset the center position for all selected items
759
for (GSList const *l = _desktop->selection->itemList(); l; l = l->next) {
760
SPItem *it = (SPItem*)(SP_OBJECT(l->data));
762
SP_OBJECT(it)->updateRepr();
763
_center_is_set = false; // center has changed
766
sp_document_done (sp_desktop_document(_desktop), SP_VERB_CONTEXT_SELECT,
775
void Inkscape::SelTrans::handleGrab(SPKnot *knot, guint /*state*/, SPSelTransHandle const &handle)
777
switch (handle.anchor) {
778
case GTK_ANCHOR_CENTER:
779
g_object_set(G_OBJECT(_grip),
780
"shape", SP_CTRL_SHAPE_BITMAP,
783
sp_canvas_item_show(_grip);
786
g_object_set(G_OBJECT(_grip),
787
"shape", SP_CTRL_SHAPE_CROSS,
790
sp_canvas_item_show(_norm);
791
sp_canvas_item_show(_grip);
796
grab(sp_knot_position(knot), handle.x, handle.y, FALSE);
800
void Inkscape::SelTrans::handleNewEvent(SPKnot *knot, Geom::Point *position, guint state, SPSelTransHandle const &handle)
802
if (!SP_KNOT_IS_GRABBED(knot)) {
806
// in case items have been unhooked from the document, don't
807
// try to continue processing events for them.
808
for (unsigned int i = 0; i < _items.size(); i++) {
809
if (!SP_OBJECT_DOCUMENT(SP_OBJECT(_items[i])) ) {
814
handle.action(this, handle, *position, state);
818
gboolean Inkscape::SelTrans::handleRequest(SPKnot *knot, Geom::Point *position, guint state, SPSelTransHandle const &handle)
820
if (!SP_KNOT_IS_GRABBED(knot)) {
824
knot->desktop->setPosition(*position);
826
// When holding shift while rotating or skewing, the transformation will be
827
// relative to the point opposite of the handle; otherwise it will be relative
828
// to the center as set for the selection
829
if ((!(state & GDK_SHIFT_MASK) == !(_state == STATE_ROTATE)) && (&handle != &handle_center)) {
831
_origin_for_bboxpoints = _opposite_for_bboxpoints;
832
_origin_for_specpoints = _opposite_for_specpoints;
833
} else if (_center) {
835
_origin_for_bboxpoints = *_center;
836
_origin_for_specpoints = *_center;
841
if (handle.request(this, handle, *position, state)) {
842
sp_knot_set_position(knot, *position, state);
843
SP_CTRL(_grip)->moveto(*position);
844
SP_CTRL(_norm)->moveto(_origin);
851
void Inkscape::SelTrans::_selChanged(Inkscape::Selection */*selection*/)
854
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
855
// reread in case it changed on the fly:
856
int prefs_bbox = prefs->getBool("/tools/bounding_box");
857
_snap_bbox_type = !prefs_bbox ?
858
SPItem::APPROXIMATE_BBOX : SPItem::GEOMETRIC_BBOX;
859
//SPItem::APPROXIMATE_BBOX will be replaced by SPItem::VISUAL_BBOX, as soon as the latter is implemented properly
861
_updateVolatileState();
862
_current_relative_affine.setIdentity();
863
_center_is_set = false; // center(s) may have changed
868
void Inkscape::SelTrans::_selModified(Inkscape::Selection */*selection*/, guint /*flags*/)
871
_updateVolatileState();
872
_current_relative_affine.setIdentity();
874
// reset internal flag
877
_center_is_set = false; // center(s) may have changed
884
* handlers for handle move-request
887
/** Returns -1 or 1 according to the sign of x. Returns 1 for 0 and NaN. */
888
static double sign(double const x)
895
gboolean sp_sel_trans_scale_request(Inkscape::SelTrans *seltrans,
896
SPSelTransHandle const &, Geom::Point &pt, guint state)
898
return seltrans->scaleRequest(pt, state);
901
gboolean sp_sel_trans_stretch_request(Inkscape::SelTrans *seltrans,
902
SPSelTransHandle const &handle, Geom::Point &pt, guint state)
904
return seltrans->stretchRequest(handle, pt, state);
907
gboolean sp_sel_trans_skew_request(Inkscape::SelTrans *seltrans,
908
SPSelTransHandle const &handle, Geom::Point &pt, guint state)
910
return seltrans->skewRequest(handle, pt, state);
913
gboolean sp_sel_trans_rotate_request(Inkscape::SelTrans *seltrans,
914
SPSelTransHandle const &, Geom::Point &pt, guint state)
916
return seltrans->rotateRequest(pt, state);
919
gboolean sp_sel_trans_center_request(Inkscape::SelTrans *seltrans,
920
SPSelTransHandle const &, Geom::Point &pt, guint state)
922
return seltrans->centerRequest(pt, state);
925
gboolean Inkscape::SelTrans::scaleRequest(Geom::Point &pt, guint state)
928
// Calculate the scale factors, which can be either visual or geometric
929
// depending on which type of bbox is currently being used (see preferences -> selector tool)
930
Geom::Scale default_scale = calcScaleFactors(_point, pt, _origin);
932
// Find the scale factors for the geometric bbox
933
Geom::Point pt_geom = _getGeomHandlePos(pt);
934
Geom::Scale geom_scale = calcScaleFactors(_point_geom, pt_geom, _origin_for_specpoints);
936
_absolute_affine = Geom::identity(); //Initialize the scaler
938
if (state & GDK_MOD1_MASK) { // scale by an integer multiplier/divider
939
// We're scaling either the visual or the geometric bbox here (see the comment above)
940
for ( unsigned int i = 0 ; i < 2 ; i++ ) {
941
if (fabs(default_scale[i]) > 1) {
942
default_scale[i] = round(default_scale[i]);
943
} else if (default_scale[i] != 0) {
944
default_scale[i] = 1/round(1/(MIN(default_scale[i], 10)));
947
// Update the knot position
948
pt = _calcAbsAffineDefault(default_scale);
949
// When scaling by an integer, snapping is not needed
951
// In all other cases we should try to snap now
952
SnapManager &m = _desktop->namedview->snap_manager;
953
m.setup(_desktop, false, _items_const);
955
Inkscape::SnappedPoint bb, sn;
956
Geom::Coord bd(NR_HUGE);
957
Geom::Coord sd(NR_HUGE);
959
if ((state & GDK_CONTROL_MASK) || _desktop->isToolboxButtonActive ("lock")) {
960
// Scale is locked to a 1:1 aspect ratio, so that s[X] must be made to equal s[Y].
962
// The aspect-ratio must be locked before snapping
963
if (fabs(default_scale[Geom::X]) > fabs(default_scale[Geom::Y])) {
964
default_scale[Geom::X] = fabs(default_scale[Geom::Y]) * sign(default_scale[Geom::X]);
965
geom_scale[Geom::X] = fabs(geom_scale[Geom::Y]) * sign(geom_scale[Geom::X]);
967
default_scale[Geom::Y] = fabs(default_scale[Geom::X]) * sign(default_scale[Geom::Y]);
968
geom_scale[Geom::Y] = fabs(geom_scale[Geom::X]) * sign(geom_scale[Geom::Y]);
971
// Snap along a suitable constraint vector from the origin.
972
bb = m.constrainedSnapScale(SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, default_scale, _origin_for_bboxpoints);
973
sn = m.constrainedSnapScale(SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, geom_scale, _origin_for_specpoints);
975
/* Choose the smaller difference in scale. Since s[X] == s[Y] we can
976
** just compare difference in s[X].
978
bd = bb.getSnapped() ? fabs(bb.getTransformation()[Geom::X] - default_scale[Geom::X]) : NR_HUGE;
979
sd = sn.getSnapped() ? fabs(sn.getTransformation()[Geom::X] - geom_scale[Geom::X]) : NR_HUGE;
981
/* Scale aspect ratio is unlocked */
982
bb = m.freeSnapScale(SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, default_scale, _origin_for_bboxpoints);
983
sn = m.freeSnapScale(SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, geom_scale, _origin_for_specpoints);
985
/* Pick the snap that puts us closest to the original scale */
986
bd = bb.getSnapped() ? fabs(Geom::L2(bb.getTransformation()) - Geom::L2(Geom::Point(default_scale[Geom::X], default_scale[Geom::Y]))) : NR_HUGE;
987
sd = sn.getSnapped() ? fabs(Geom::L2(sn.getTransformation()) - Geom::L2(Geom::Point(geom_scale[Geom::X], geom_scale[Geom::Y]))) : NR_HUGE;
990
if (!(bb.getSnapped() || sn.getSnapped())) {
991
// We didn't snap at all! Don't update the handle position, just calculate the new transformation
992
_calcAbsAffineDefault(default_scale);
993
_desktop->snapindicator->remove_snaptarget();
994
} else if (bd < sd) {
995
// We snapped the bbox (which is either visual or geometric)
996
_desktop->snapindicator->set_new_snaptarget(bb);
997
default_scale = Geom::Scale(bb.getTransformation());
998
// Calculate the new transformation and update the handle position
999
pt = _calcAbsAffineDefault(default_scale);
1001
_desktop->snapindicator->set_new_snaptarget(sn);
1002
// We snapped the special points (e.g. nodes), which are not at the visual bbox
1003
// The handle location however (pt) might however be at the visual bbox, so we
1004
// will have to calculate pt taking the stroke width into account
1005
geom_scale = Geom::Scale(sn.getTransformation());
1006
pt = _calcAbsAffineGeom(geom_scale);
1011
_message_context.setF(Inkscape::IMMEDIATE_MESSAGE,
1012
_("<b>Scale</b>: %0.2f%% x %0.2f%%; with <b>Ctrl</b> to lock ratio"),
1013
100 * _absolute_affine[0], 100 * _absolute_affine[3]);
1018
gboolean Inkscape::SelTrans::stretchRequest(SPSelTransHandle const &handle, Geom::Point &pt, guint state)
1020
Geom::Dim2 axis, perp;
1021
switch (handle.cursor) {
1023
case GDK_BOTTOM_SIDE:
1028
case GDK_RIGHT_SIDE:
1033
g_assert_not_reached();
1037
// Calculate the scale factors, which can be either visual or geometric
1038
// depending on which type of bbox is currently being used (see preferences -> selector tool)
1039
Geom::Scale default_scale = calcScaleFactors(_point, pt, _origin);
1040
default_scale[perp] = 1;
1042
// Find the scale factors for the geometric bbox
1043
Geom::Point pt_geom = _getGeomHandlePos(pt);
1044
Geom::Scale geom_scale = calcScaleFactors(_point_geom, pt_geom, _origin_for_specpoints);
1045
geom_scale[perp] = 1;
1047
_absolute_affine = Geom::identity(); //Initialize the scaler
1049
if (state & GDK_MOD1_MASK) { // stretch by an integer multiplier/divider
1050
if (fabs(default_scale[axis]) > 1) {
1051
default_scale[axis] = round(default_scale[axis]);
1052
} else if (default_scale[axis] != 0) {
1053
default_scale[axis] = 1/round(1/(MIN(default_scale[axis], 10)));
1055
// Calculate the new transformation and update the handle position
1056
pt = _calcAbsAffineDefault(default_scale);
1057
// When stretching by an integer, snapping is not needed
1059
// In all other cases we should try to snap now
1061
SnapManager &m = _desktop->namedview->snap_manager;
1062
m.setup(_desktop, false, _items_const);
1064
Inkscape::SnappedPoint bb, sn;
1065
g_assert(bb.getSnapped() == false); // Check initialization to catch any regression
1066
Geom::Coord bd(NR_HUGE);
1067
Geom::Coord sd(NR_HUGE);
1069
bool symmetrical = state & GDK_CONTROL_MASK;
1071
bb = m.constrainedSnapStretch(SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, Geom::Coord(default_scale[axis]), _origin_for_bboxpoints, Geom::Dim2(axis), symmetrical);
1072
sn = m.constrainedSnapStretch(SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, Geom::Coord(geom_scale[axis]), _origin_for_specpoints, Geom::Dim2(axis), symmetrical);
1074
if (bb.getSnapped()) {
1075
// We snapped the bbox (which is either visual or geometric)
1076
bd = fabs(bb.getTransformation()[axis] - default_scale[axis]);
1077
default_scale[axis] = bb.getTransformation()[axis];
1080
if (sn.getSnapped()) {
1081
sd = fabs(sn.getTransformation()[axis] - geom_scale[axis]);
1082
geom_scale[axis] = sn.getTransformation()[axis];
1086
// on ctrl, apply symmetrical scaling instead of stretching
1087
// Preserve aspect ratio, but never flip in the dimension not being edited (by using fabs())
1088
default_scale[perp] = fabs(default_scale[axis]);
1089
geom_scale[perp] = fabs(geom_scale[axis]);
1092
if (!(bb.getSnapped() || sn.getSnapped())) {
1093
// We didn't snap at all! Don't update the handle position, just calculate the new transformation
1094
_calcAbsAffineDefault(default_scale);
1095
_desktop->snapindicator->remove_snaptarget();
1096
} else if (bd < sd) {
1097
_desktop->snapindicator->set_new_snaptarget(bb);
1098
// Calculate the new transformation and update the handle position
1099
pt = _calcAbsAffineDefault(default_scale);
1101
_desktop->snapindicator->set_new_snaptarget(sn);
1102
// We snapped the special points (e.g. nodes), which are not at the visual bbox
1103
// The handle location however (pt) might however be at the visual bbox, so we
1104
// will have to calculate pt taking the stroke width into account
1105
pt = _calcAbsAffineGeom(geom_scale);
1110
_message_context.setF(Inkscape::IMMEDIATE_MESSAGE,
1111
_("<b>Scale</b>: %0.2f%% x %0.2f%%; with <b>Ctrl</b> to lock ratio"),
1112
100 * _absolute_affine[0], 100 * _absolute_affine[3]);
1117
gboolean Inkscape::SelTrans::skewRequest(SPSelTransHandle const &handle, Geom::Point &pt, guint state)
1119
/* When skewing (or rotating):
1120
* 1) the stroke width will not change. This makes life much easier because we don't have to
1121
* account for that (like for scaling or stretching). As a consequence, all points will
1122
* have the same origin for the transformation and for the snapping.
1123
* 2) When holding shift, the transformation will be relative to the point opposite of
1124
* the handle; otherwise it will be relative to the center as set for the selection
1130
switch (handle.cursor) {
1131
case GDK_SB_H_DOUBLE_ARROW:
1135
case GDK_SB_V_DOUBLE_ARROW:
1140
g_assert_not_reached();
1145
Geom::Point const initial_delta = _point - _origin;
1147
if (fabs(initial_delta[dim_a]) < 1e-15) {
1151
// Calculate the scale factors, which can be either visual or geometric
1152
// depending on which type of bbox is currently being used (see preferences -> selector tool)
1153
Geom::Scale scale = calcScaleFactors(_point, pt, _origin, false);
1154
Geom::Scale skew = calcScaleFactors(_point, pt, _origin, true);
1158
if (fabs(scale[dim_a]) < 1) {
1159
// Prevent shrinking of the selected object, while allowing mirroring
1160
scale[dim_a] = sign(scale[dim_a]);
1162
// Allow expanding of the selected object by integer multiples
1163
scale[dim_a] = floor(scale[dim_a] + 0.5);
1166
double radians = atan(skew[dim_a] / scale[dim_a]);
1168
if (state & GDK_CONTROL_MASK) {
1169
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1170
// Snap to defined angle increments
1171
int snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
1173
double sections = floor(radians * snaps / M_PI + .5);
1174
if (fabs(sections) >= snaps / 2) {
1175
sections = sign(sections) * (snaps / 2 - 1);
1177
radians = (M_PI / snaps) * sections;
1179
skew[dim_a] = tan(radians) * scale[dim_a];
1181
// Snap to objects, grids, guides
1183
SnapManager &m = _desktop->namedview->snap_manager;
1184
m.setup(_desktop, false, _items_const);
1186
Inkscape::Snapper::ConstraintLine const constraint(component_vectors[dim_b]);
1187
// When skewing, we cannot snap the corners of the bounding box, see the comment in "constrainedSnapSkew" for details
1188
Geom::Point const s(skew[dim_a], scale[dim_a]);
1189
Inkscape::SnappedPoint sn = m.constrainedSnapSkew(Inkscape::SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, constraint, s, _origin, Geom::Dim2(dim_b));
1191
if (sn.getSnapped()) {
1192
// We snapped something, so change the skew to reflect it
1193
Geom::Coord const sd = sn.getSnapped() ? sn.getTransformation()[0] : NR_HUGE;
1194
_desktop->snapindicator->set_new_snaptarget(sn);
1197
_desktop->snapindicator->remove_snaptarget();
1201
// Update the handle position
1202
pt[dim_b] = initial_delta[dim_a] * skew[dim_a] + _point[dim_b];
1203
pt[dim_a] = initial_delta[dim_a] * scale[dim_a] + _origin[dim_a];
1205
// Calculate the relative affine
1206
_relative_affine = Geom::identity();
1207
_relative_affine[2*dim_a + dim_a] = (pt[dim_a] - _origin[dim_a]) / initial_delta[dim_a];
1208
_relative_affine[2*dim_a + (dim_b)] = (pt[dim_b] - _point[dim_b]) / initial_delta[dim_a];
1209
_relative_affine[2*(dim_b) + (dim_a)] = 0;
1210
_relative_affine[2*(dim_b) + (dim_b)] = 1;
1212
for (int i = 0; i < 2; i++) {
1213
if (fabs(_relative_affine[3*i]) < 1e-15) {
1214
_relative_affine[3*i] = 1e-15;
1218
// Update the status text
1219
double degrees = mod360symm(Geom::rad_to_deg(radians));
1220
_message_context.setF(Inkscape::IMMEDIATE_MESSAGE,
1221
// TRANSLATORS: don't modify the first ";"
1222
// (it will NOT be displayed as ";" - only the second one will be)
1223
_("<b>Skew</b>: %0.2f°; with <b>Ctrl</b> to snap angle"),
1229
gboolean Inkscape::SelTrans::rotateRequest(Geom::Point &pt, guint state)
1231
/* When rotating (or skewing):
1232
* 1) the stroke width will not change. This makes life much easier because we don't have to
1233
* account for that (like for scaling or stretching). As a consequence, all points will
1234
* have the same origin for the transformation and for the snapping.
1235
* 2) When holding shift, the transformation will be relative to the point opposite of
1236
* the handle; otherwise it will be relative to the center as set for the selection
1239
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1240
int snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
1242
// rotate affine in rotate
1243
Geom::Point const d1 = _point - _origin;
1244
Geom::Point const d2 = pt - _origin;
1246
Geom::Coord const h1 = Geom::L2(d1); // initial radius
1247
if (h1 < 1e-15) return FALSE;
1248
Geom::Point q1 = d1 / h1; // normalized initial vector to handle
1249
Geom::Coord const h2 = Geom::L2(d2); // new radius
1250
if (fabs(h2) < 1e-15) return FALSE;
1251
Geom::Point q2 = d2 / h2; // normalized new vector to handle
1254
if (state & GDK_CONTROL_MASK) {
1255
// Snap to defined angle increments
1256
double cos_t = Geom::dot(q1, q2);
1257
double sin_t = Geom::dot(Geom::rot90(q1), q2);
1258
radians = atan2(sin_t, cos_t);
1260
radians = ( M_PI / snaps ) * floor( radians * snaps / M_PI + .5 );
1262
q1 = Geom::Point(1, 0);
1263
q2 = Geom::Point(cos(radians), sin(radians));
1265
radians = atan2(Geom::dot(Geom::rot90(d1), d2),
1269
Geom::Rotate const r1(q1);
1270
Geom::Rotate const r2(q2);
1272
// Calculate the relative affine
1273
_relative_affine = r2 * r1.inverse();
1275
// Update the handle position
1276
pt = _point * Geom::Translate(-_origin) * _relative_affine * Geom::Translate(_origin);
1278
// Update the status text
1279
double degrees = mod360symm(Geom::rad_to_deg(radians));
1280
_message_context.setF(Inkscape::IMMEDIATE_MESSAGE,
1281
// TRANSLATORS: don't modify the first ";"
1282
// (it will NOT be displayed as ";" - only the second one will be)
1283
_("<b>Rotate</b>: %0.2f°; with <b>Ctrl</b> to snap angle"), degrees);
1288
// Move the item's transformation center
1289
gboolean Inkscape::SelTrans::centerRequest(Geom::Point &pt, guint state)
1291
SnapManager &m = _desktop->namedview->snap_manager;
1293
m.freeSnapReturnByRef(SnapPreferences::SNAPPOINT_NODE, pt, Inkscape::SNAPSOURCE_HANDLE);
1295
if (state & GDK_CONTROL_MASK) {
1296
if ( fabs(_point[Geom::X] - pt[Geom::X]) > fabs(_point[Geom::Y] - pt[Geom::Y]) ) {
1297
pt[Geom::Y] = _point[Geom::Y];
1299
pt[Geom::X] = _point[Geom::X];
1303
if ( !(state & GDK_SHIFT_MASK) && _bbox ) {
1304
// screen pixels to snap center to bbox
1306
// FIXME: take from prefs
1307
double snap_dist = SNAP_DIST / _desktop->current_zoom();
1309
for (int i = 0; i < 2; i++) {
1310
if (fabs(pt[i] - _bbox->min()[i]) < snap_dist) {
1311
pt[i] = _bbox->min()[i];
1313
if (fabs(pt[i] - _bbox->midpoint()[i]) < snap_dist) {
1314
pt[i] = _bbox->midpoint()[i];
1316
if (fabs(pt[i] - _bbox->max()[i]) < snap_dist) {
1317
pt[i] = _bbox->max()[i];
1323
GString *xs = SP_PX_TO_METRIC_STRING(pt[Geom::X], _desktop->namedview->getDefaultMetric());
1324
GString *ys = SP_PX_TO_METRIC_STRING(pt[Geom::Y], _desktop->namedview->getDefaultMetric());
1325
_message_context.setF(Inkscape::NORMAL_MESSAGE, _("Move <b>center</b> to %s, %s"), xs->str, ys->str);
1326
g_string_free(xs, FALSE);
1327
g_string_free(ys, FALSE);
1333
* handlers for handle movement
1337
void sp_sel_trans_stretch(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, Geom::Point &pt, guint state)
1339
seltrans->stretch(handle, pt, state);
1342
void sp_sel_trans_scale(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state)
1344
seltrans->scale(pt, state);
1347
void sp_sel_trans_skew(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, Geom::Point &pt, guint state)
1349
seltrans->skew(handle, pt, state);
1352
void sp_sel_trans_rotate(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint state)
1354
seltrans->rotate(pt, state);
1357
void Inkscape::SelTrans::stretch(SPSelTransHandle const &/*handle*/, Geom::Point &/*pt*/, guint /*state*/)
1359
transform(_absolute_affine, Geom::Point(0, 0)); // we have already accounted for origin, so pass 0,0
1362
void Inkscape::SelTrans::scale(Geom::Point &/*pt*/, guint /*state*/)
1364
transform(_absolute_affine, Geom::Point(0, 0)); // we have already accounted for origin, so pass 0,0
1367
void Inkscape::SelTrans::skew(SPSelTransHandle const &/*handle*/, Geom::Point &/*pt*/, guint /*state*/)
1369
transform(_relative_affine, _origin);
1372
void Inkscape::SelTrans::rotate(Geom::Point &/*pt*/, guint /*state*/)
1374
transform(_relative_affine, _origin);
1377
void sp_sel_trans_center(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, Geom::Point &pt, guint /*state*/)
1379
seltrans->setCenter(pt);
1383
void Inkscape::SelTrans::moveTo(Geom::Point const &xy, guint state)
1385
SnapManager &m = _desktop->namedview->snap_manager;
1387
/* The amount that we've moved by during this drag */
1388
Geom::Point dxy = xy - _point;
1390
bool const alt = (state & GDK_MOD1_MASK);
1391
bool const control = (state & GDK_CONTROL_MASK);
1392
bool const shift = (state & GDK_SHIFT_MASK);
1396
/* Alt pressed means keep offset: snap the moved distance to the grid.
1397
** FIXME: this will snap to more than just the grid, nowadays.
1400
m.setup(_desktop, true, _items_const);
1401
m.freeSnapReturnByRef(SnapPreferences::SNAPPOINT_NODE, dxy, Inkscape::SNAPSOURCE_UNDEFINED);
1404
if (control) { // shift & control: constrained movement without snapping
1405
if (fabs(dxy[Geom::X]) > fabs(dxy[Geom::Y])) {
1411
} else { //!shift: with snapping
1413
/* We're snapping to things, possibly with a constraint to horizontal or
1414
** vertical movement. Obtain a list of possible translations and then
1415
** pick the smallest.
1418
m.setup(_desktop, false, _items_const);
1420
/* This will be our list of possible translations */
1421
std::list<Inkscape::SnappedPoint> s;
1423
if (control) { // constrained movement with snapping
1425
/* Snap to things, and also constrain to horizontal or vertical movement */
1427
unsigned int dim = fabs(dxy[Geom::X]) > fabs(dxy[Geom::Y]) ? Geom::X : Geom::Y;
1428
// When doing a constrained translation, all points will move in the same direction, i.e.
1429
// either horizontally or vertically. Therefore we only have to specify the direction of
1430
// the constraint-line once. The constraint lines are parallel, but might not be colinear.
1431
// Therefore we will have to set the point through which the constraint-line runs
1432
// individually for each point to be snapped; this will be handled however by _snapTransformed()
1433
s.push_back(m.constrainedSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_BBOX,
1436
Inkscape::Snapper::ConstraintLine(component_vectors[dim]),
1439
s.push_back(m.constrainedSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_NODE,
1442
Inkscape::Snapper::ConstraintLine(component_vectors[dim]),
1444
} else { // !control
1446
// Let's leave this timer code here for a while. I'll probably need it in the near future (Diederik van Lierop)
1447
/* GTimeVal starttime;
1449
g_get_current_time(&starttime); */
1451
/* Snap to things with no constraint */
1452
s.push_back(m.freeSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_BBOX, _bbox_points, _point, dxy));
1453
s.push_back(m.freeSnapTranslation(Inkscape::SnapPreferences::SNAPPOINT_NODE, _snap_points, _point, dxy));
1455
/*g_get_current_time(&endtime);
1456
double elapsed = ((((double)endtime.tv_sec - starttime.tv_sec) * G_USEC_PER_SEC + (endtime.tv_usec - starttime.tv_usec))) / 1000.0;
1457
std::cout << "Time spent snapping: " << elapsed << std::endl; */
1461
Inkscape::SnappedPoint best_snapped_point;
1462
for (std::list<Inkscape::SnappedPoint>::const_iterator i = s.begin(); i != s.end(); i++) {
1463
if (i->getSnapped()) {
1464
if (best_snapped_point.isOtherSnapBetter(*i, true)) {
1465
best_snapped_point = *i;
1466
dxy = i->getTransformation();
1470
if (best_snapped_point.getSnapped()) {
1471
_desktop->snapindicator->set_new_snaptarget(best_snapped_point);
1473
// We didn't snap, so remove any previous snap indicator
1474
_desktop->snapindicator->remove_snaptarget();
1476
// If we didn't snap, then we should still constrain horizontally or vertically
1477
// (When we did snap, then this constraint has already been enforced by
1478
// calling constrainedSnapTranslation() above)
1479
if (fabs(dxy[Geom::X]) > fabs(dxy[Geom::Y])) {
1488
Geom::Matrix const move((Geom::Translate(dxy)));
1489
Geom::Point const norm(0, 0);
1490
transform(move, norm);
1493
GString *xs = SP_PX_TO_METRIC_STRING(dxy[Geom::X], _desktop->namedview->getDefaultMetric());
1494
GString *ys = SP_PX_TO_METRIC_STRING(dxy[Geom::Y], _desktop->namedview->getDefaultMetric());
1495
_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);
1496
g_string_free(xs, TRUE);
1497
g_string_free(ys, TRUE);
1500
// Given a location of a handle at the visual bounding box, find the corresponding location at the
1501
// geometrical bounding box
1502
Geom::Point Inkscape::SelTrans::_getGeomHandlePos(Geom::Point const &visual_handle_pos)
1504
if ( _snap_bbox_type == SPItem::GEOMETRIC_BBOX) {
1505
// When the selector tool is using geometric bboxes, then the handle is already
1506
// located at one of the geometric bbox corners
1507
return visual_handle_pos;
1510
if (!_geometric_bbox) {
1511
//_getGeomHandlePos() can only be used after _geometric_bbox has been defined!
1512
return visual_handle_pos;
1515
// Using the Geom::Rect constructor below ensures that "min() < max()", which is important
1516
// because this will also hold for _bbox, and which is required for get_scale_transform_with_stroke()
1517
Geom::Rect new_bbox = Geom::Rect(_origin_for_bboxpoints, visual_handle_pos); // new visual bounding box
1518
// Please note that the new_bbox might in fact be just a single line, for example when stretching (in
1519
// which case the handle and origin will be aligned vertically or horizontally)
1520
Geom::Point normalized_handle_pos = (visual_handle_pos - new_bbox.min()) * Geom::Scale(new_bbox.dimensions()).inverse();
1522
// Calculate the absolute affine while taking into account the scaling of the stroke width
1523
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1524
bool transform_stroke = prefs->getBool("/options/transform/stroke", true);
1525
Geom::Matrix abs_affine = get_scale_transform_with_stroke (*_bbox, _strokewidth, transform_stroke,
1526
new_bbox.min()[Geom::X], new_bbox.min()[Geom::Y], new_bbox.max()[Geom::X], new_bbox.max()[Geom::Y]);
1528
// Calculate the scaled geometrical bbox
1529
Geom::Rect new_geom_bbox = Geom::Rect(_geometric_bbox->min() * abs_affine, _geometric_bbox->max() * abs_affine);
1530
// Find the location of the handle on this new geometrical bbox
1531
return normalized_handle_pos * Geom::Scale(new_geom_bbox.dimensions()) + new_geom_bbox.min(); //new position of the geometric handle
1534
Geom::Scale Inkscape::calcScaleFactors(Geom::Point const &initial_point, Geom::Point const &new_point, Geom::Point const &origin, bool const skew)
1536
// Work out the new scale factors for the bbox
1538
Geom::Point const initial_delta = initial_point - origin;
1539
Geom::Point const new_delta = new_point - origin;
1540
Geom::Point const offset = new_point - initial_point;
1541
Geom::Scale scale(1, 1);
1543
for ( unsigned int i = 0 ; i < 2 ; i++ ) {
1544
if ( fabs(initial_delta[i]) > 1e-6 ) {
1546
scale[i] = offset[1-i] / initial_delta[i];
1548
scale[i] = new_delta[i] / initial_delta[i];
1556
// Only for scaling/stretching
1557
Geom::Point Inkscape::SelTrans::_calcAbsAffineDefault(Geom::Scale const default_scale)
1559
Geom::Matrix abs_affine = Geom::Translate(-_origin) * Geom::Matrix(default_scale) * Geom::Translate(_origin);
1560
Geom::Point new_bbox_min = _approximate_bbox->min() * abs_affine;
1561
Geom::Point new_bbox_max = _approximate_bbox->max() * abs_affine;
1563
bool transform_stroke = false;
1564
gdouble strokewidth = 0;
1566
if ( _snap_bbox_type != SPItem::GEOMETRIC_BBOX) {
1567
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1568
transform_stroke = prefs->getBool("/options/transform/stroke", true);
1569
strokewidth = _strokewidth;
1572
_absolute_affine = get_scale_transform_with_stroke (*_approximate_bbox, strokewidth, transform_stroke,
1573
new_bbox_min[Geom::X], new_bbox_min[Geom::Y], new_bbox_max[Geom::X], new_bbox_max[Geom::Y]);
1575
// return the new handle position
1576
return ( _point - _origin ) * default_scale + _origin;
1579
// Only for scaling/stretching
1580
Geom::Point Inkscape::SelTrans::_calcAbsAffineGeom(Geom::Scale const geom_scale)
1582
_relative_affine = Geom::Matrix(geom_scale);
1583
_absolute_affine = Geom::Translate(-_origin_for_specpoints) * _relative_affine * Geom::Translate(_origin_for_specpoints);
1585
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1586
bool const transform_stroke = prefs->getBool("/options/transform/stroke", true);
1587
Geom::Rect visual_bbox = get_visual_bbox(_geometric_bbox, _absolute_affine, _strokewidth, transform_stroke);
1589
// return the new handle position
1590
return visual_bbox.min() + visual_bbox.dimensions() * Geom::Scale(_handle_x, _handle_y);
1593
void Inkscape::SelTrans::_keepClosestPointOnly(std::vector<std::pair<Geom::Point, int> > &points, const Geom::Point &reference)
1595
if (points.size() < 2) return;
1597
std::pair<Geom::Point, int> closest_point = std::make_pair(Geom::Point(NR_HUGE, NR_HUGE), SNAPSOURCE_UNDEFINED);
1598
Geom::Coord closest_dist = NR_HUGE;
1600
for(std::vector<std::pair<Geom::Point, int> >::const_iterator i = points.begin(); i != points.end(); i++) {
1601
Geom::Coord dist = Geom::L2((*i).first - reference);
1602
if (i == points.begin() || dist < closest_dist) {
1604
closest_dist = dist;
1609
points.push_back(closest_point);
1615
c-file-style:"stroustrup"
1616
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1617
indent-tabs-mode:nil
1621
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
added
removed
inkscape-0.47pre1/src/seltrans.cpp
