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-rw-r--r--src/ui/tools/measure-tool.cpp1470
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diff --git a/src/ui/tools/measure-tool.cpp b/src/ui/tools/measure-tool.cpp
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Our nice measuring tool
+ *
+ * Authors:
+ * Felipe Correa da Silva Sanches <juca@members.fsf.org>
+ * Jon A. Cruz <jon@joncruz.org>
+ * Jabiertxo Arraiza <jabier.arraiza@marker.es>
+ *
+ * Copyright (C) 2011 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "measure-tool.h"
+
+#include <iomanip>
+
+#include <gtkmm.h>
+#include <glibmm/i18n.h>
+
+#include <boost/none_t.hpp>
+
+#include <2geom/line.h>
+#include <2geom/path-intersection.h>
+
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "inkscape.h"
+#include "layer-manager.h"
+#include "path-chemistry.h"
+#include "rubberband.h"
+#include "text-editing.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-curve.h"
+#include "display/control/canvas-item-ctrl.h"
+#include "display/control/canvas-item-group.h"
+#include "display/control/canvas-item-text.h"
+
+#include "object/sp-defs.h"
+#include "object/sp-flowtext.h"
+#include "object/sp-namedview.h"
+#include "object/sp-root.h"
+#include "object/sp-shape.h"
+#include "object/sp-text.h"
+
+#include "svg/stringstream.h"
+#include "svg/svg-color.h"
+#include "svg/svg.h"
+
+#include "ui/dialog/knot-properties.h"
+#include "ui/icon-names.h"
+#include "ui/knot/knot.h"
+#include "ui/tools/freehand-base.h"
+#include "ui/widget/canvas.h" // Canvas area
+
+#include "util/units.h"
+
+using Inkscape::Util::unit_table;
+using Inkscape::DocumentUndo;
+
+const guint32 MT_KNOT_COLOR_NORMAL = 0xffffff00;
+const guint32 MT_KNOT_COLOR_MOUSEOVER = 0xff000000;
+
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+namespace {
+
+/**
+ * Simple class to use for removing label overlap.
+ */
+class LabelPlacement {
+public:
+
+ double lengthVal;
+ double offset;
+ Geom::Point start;
+ Geom::Point end;
+};
+
+bool SortLabelPlacement(LabelPlacement const &first, LabelPlacement const &second)
+{
+ if (first.end[Geom::Y] == second.end[Geom::Y]) {
+ return first.end[Geom::X] < second.end[Geom::X];
+ } else {
+ return first.end[Geom::Y] < second.end[Geom::Y];
+ }
+}
+
+//precision is for give the number of decimal positions
+//of the label to calculate label width
+void repositionOverlappingLabels(std::vector<LabelPlacement> &placements, SPDesktop *desktop, Geom::Point const &normal, double fontsize, int precision)
+{
+ std::sort(placements.begin(), placements.end(), SortLabelPlacement);
+
+ double border = 3;
+ Geom::Rect box;
+ {
+ Geom::Point tmp(fontsize * (6 + precision) + (border * 2), fontsize + (border * 2));
+ tmp = desktop->w2d(tmp);
+ box = Geom::Rect(-tmp[Geom::X] / 2, -tmp[Geom::Y] / 2, tmp[Geom::X] / 2, tmp[Geom::Y] / 2);
+ }
+
+ // Using index since vector may be re-ordered as we go.
+ // Starting at one, since the first item can't overlap itself
+ for (size_t i = 1; i < placements.size(); i++) {
+ LabelPlacement &place = placements[i];
+
+ bool changed = false;
+ do {
+ Geom::Rect current(box + place.end);
+
+ changed = false;
+ bool overlaps = false;
+ for (size_t j = i; (j > 0) && !overlaps; --j) {
+ LabelPlacement &otherPlace = placements[j - 1];
+ Geom::Rect target(box + otherPlace.end);
+ if (current.intersects(target)) {
+ overlaps = true;
+ }
+ }
+ if (overlaps) {
+ place.offset += (fontsize + border);
+ place.end = place.start - desktop->w2d(normal * place.offset);
+ changed = true;
+ }
+ } while (changed);
+
+ std::sort(placements.begin(), placements.begin() + i + 1, SortLabelPlacement);
+ }
+}
+
+/**
+ * Calculates where to place the anchor for the display text and arc.
+ *
+ * @param desktop the desktop that is being used.
+ * @param angle the angle to be displaying.
+ * @param baseAngle the angle of the initial baseline.
+ * @param startPoint the point that is the vertex of the selected angle.
+ * @param endPoint the point that is the end the user is manipulating for measurement.
+ * @param fontsize the size to display the text label at.
+ */
+Geom::Point calcAngleDisplayAnchor(SPDesktop *desktop, double angle, double baseAngle,
+ Geom::Point const &startPoint, Geom::Point const &endPoint,
+ double fontsize)
+{
+ // Time for the trick work of figuring out where things should go, and how.
+ double lengthVal = (endPoint - startPoint).length();
+ double effective = baseAngle + (angle / 2);
+ Geom::Point where(lengthVal, 0);
+ where *= Geom::Affine(Geom::Rotate(effective)) * Geom::Affine(Geom::Translate(startPoint));
+
+ // When the angle is tight, the label would end up under the cursor and/or lines. Bump it
+ double scaledFontsize = std::abs(fontsize * desktop->w2d(Geom::Point(0, 1.0))[Geom::Y]);
+ if (std::abs((where - endPoint).length()) < scaledFontsize) {
+ where[Geom::Y] += scaledFontsize * 2;
+ }
+
+ // We now have the ideal position, but need to see if it will fit/work.
+
+ Geom::Rect screen_world = desktop->getCanvas()->get_area_world();
+ if (screen_world.interiorContains(desktop->d2w(startPoint)) ||
+ screen_world.interiorContains(desktop->d2w(endPoint))) {
+ screen_world.expandBy(fontsize * -3, fontsize / -2);
+ where = desktop->w2d(screen_world.clamp(desktop->d2w(where)));
+ } // else likely initialized the measurement tool, keep display near the measurement.
+
+ return where;
+}
+
+} // namespace
+
+/**
+ * Given an angle, the arc center and edge point, draw an arc segment centered around that edge point.
+ *
+ * @param desktop the desktop that is being used.
+ * @param center the center point for the arc.
+ * @param end the point that ends at the edge of the arc segment.
+ * @param anchor the anchor point for displaying the text label.
+ * @param angle the angle of the arc segment to draw.
+ * @param measure_rpr the container of the curve if converted to items.
+ *
+ */
+void MeasureTool::createAngleDisplayCurve(Geom::Point const &center, Geom::Point const &end, Geom::Point const &anchor,
+ double angle, bool to_phantom,
+ std::vector<Inkscape::CanvasItem *> &measure_phantom_items,
+ std::vector<Inkscape::CanvasItem *> &measure_tmp_items,
+ Inkscape::XML::Node *measure_repr)
+{
+ // Given that we have a point on the arc's edge and the angle of the arc, we need to get the two endpoints.
+
+ double textLen = std::abs((anchor - center).length());
+ double sideLen = std::abs((end - center).length());
+ if (sideLen > 0.0) {
+ double factor = std::min(1.0, textLen / sideLen);
+
+ // arc start
+ Geom::Point p1 = end * (Geom::Affine(Geom::Translate(-center))
+ * Geom::Affine(Geom::Scale(factor))
+ * Geom::Affine(Geom::Translate(center)));
+
+ // arc end
+ Geom::Point p4 = p1 * (Geom::Affine(Geom::Translate(-center))
+ * Geom::Affine(Geom::Rotate(-angle))
+ * Geom::Affine(Geom::Translate(center)));
+
+ // from Riskus
+ double xc = center[Geom::X];
+ double yc = center[Geom::Y];
+ double ax = p1[Geom::X] - xc;
+ double ay = p1[Geom::Y] - yc;
+ double bx = p4[Geom::X] - xc;
+ double by = p4[Geom::Y] - yc;
+ double q1 = (ax * ax) + (ay * ay);
+ double q2 = q1 + (ax * bx) + (ay * by);
+
+ double k2;
+
+ /*
+ * The denominator of the expression for k2 can become 0, so this should be handled.
+ * The function for k2 tends to a limit for very small values of (ax * by) - (ay * bx), so theoretically
+ * it should be correct for values close to 0, however due to floating point inaccuracies this
+ * is not the case, and instabilities still exist. Therefore do a range check on the denominator.
+ * (This also solves some instances where again due to floating point inaccuracies, the square root term
+ * becomes slightly negative in case of very small values for ax * by - ay * bx).
+ * The values of this range have been generated by trying to make this term as small as possible,
+ * by zooming in as much as possible in the GUI, using the measurement tool and
+ * trying to get as close to 180 or 0 degrees as possible.
+ * Smallest value I was able to get was around 1e-5, and then I added some zeroes for good measure.
+ */
+ if (!((ax * by - ay * bx < 0.00000000001) && (ax * by - ay * bx > -0.00000000001))) {
+ k2 = (4.0 / 3.0) * (std::sqrt(2 * q1 * q2) - q2) / ((ax * by) - (ay * bx));
+ } else {
+ // If the denominator is 0, there are 2 cases:
+ // Either the angle is (almost) +-180 degrees, in which case the limit of k2 tends to -+4.0/3.0.
+ if (angle > 3.14 || angle < -3.14) { // The angle is in radians
+ // Now there are also 2 cases, where inkscape thinks it is 180 degrees, or -180 degrees.
+ // Adjust the value of k2 accordingly
+ if (angle > 0) {
+ k2 = -4.0 / 3.0;
+ } else {
+ k2 = 4.0 / 3.0;
+ }
+ } else {
+ // if the angle is (almost) 0, k2 is equal to 0
+ k2 = 0.0;
+ }
+ }
+
+ Geom::Point p2(xc + ax - (k2 * ay),
+ yc + ay + (k2 * ax));
+ Geom::Point p3(xc + bx + (k2 * by),
+ yc + by - (k2 * bx));
+
+ auto *curve = new Inkscape::CanvasItemCurve(_desktop->getCanvasTemp(), p1, p2, p3, p4);
+ curve->set_name("CanvasItemCurve:MeasureToolCurve");
+ curve->set_stroke(Inkscape::CANVAS_ITEM_SECONDARY);
+ curve->set_z_position(0);
+ curve->show();
+ if(to_phantom){
+ curve->set_stroke(0x8888887f);
+ measure_phantom_items.emplace_back(curve);
+ } else {
+ measure_tmp_items.emplace_back(curve);
+ }
+
+ if(measure_repr) {
+ Geom::PathVector pathv;
+ Geom::Path path;
+ path.start(_desktop->doc2dt(p1));
+ path.appendNew<Geom::CubicBezier>(_desktop->doc2dt(p2), _desktop->doc2dt(p3), _desktop->doc2dt(p4));
+ pathv.push_back(path);
+ auto layer = _desktop->layerManager().currentLayer();
+ pathv *= layer->i2doc_affine().inverse();
+ if(!pathv.empty()) {
+ setMeasureItem(pathv, true, false, 0xff00007f, measure_repr);
+ }
+ }
+ }
+}
+
+std::optional<Geom::Point> explicit_base_tmp = std::nullopt;
+
+MeasureTool::MeasureTool(SPDesktop *desktop)
+ : ToolBase(desktop, "/tools/measure", "measure.svg")
+{
+ start_p = readMeasurePoint(true);
+ end_p = readMeasurePoint(false);
+
+ // create the knots
+ this->knot_start = new SPKnot(desktop, _("Measure start, <b>Shift+Click</b> for position dialog"),
+ Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "CanvasItemCtrl:MeasureTool");
+ this->knot_start->setMode(Inkscape::CANVAS_ITEM_CTRL_MODE_XOR);
+ this->knot_start->setFill(MT_KNOT_COLOR_NORMAL, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER);
+ this->knot_start->setStroke(0x0000007f, 0x0000007f, 0x0000007f, 0x0000007f);
+ this->knot_start->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_CIRCLE);
+ this->knot_start->updateCtrl();
+ this->knot_start->moveto(start_p);
+ this->knot_start->show();
+
+ this->knot_end = new SPKnot(desktop, _("Measure end, <b>Shift+Click</b> for position dialog"),
+ Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "CanvasItemCtrl:MeasureTool");
+ this->knot_end->setMode(Inkscape::CANVAS_ITEM_CTRL_MODE_XOR);
+ this->knot_end->setFill(MT_KNOT_COLOR_NORMAL, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER);
+ this->knot_end->setStroke(0x0000007f, 0x0000007f, 0x0000007f, 0x0000007f);
+ this->knot_end->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_CIRCLE);
+ this->knot_end->updateCtrl();
+ this->knot_end->moveto(end_p);
+ this->knot_end->show();
+
+ showCanvasItems();
+
+ this->_knot_start_moved_connection = this->knot_start->moved_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotStartMovedHandler));
+ this->_knot_start_click_connection = this->knot_start->click_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotClickHandler));
+ this->_knot_start_ungrabbed_connection = this->knot_start->ungrabbed_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotUngrabbedHandler));
+ this->_knot_end_moved_connection = this->knot_end->moved_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotEndMovedHandler));
+ this->_knot_end_click_connection = this->knot_end->click_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotClickHandler));
+ this->_knot_end_ungrabbed_connection = this->knot_end->ungrabbed_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotUngrabbedHandler));
+
+}
+
+MeasureTool::~MeasureTool()
+{
+ this->enableGrDrag(false);
+ ungrabCanvasEvents();
+
+ this->_knot_start_moved_connection.disconnect();
+ this->_knot_start_ungrabbed_connection.disconnect();
+ this->_knot_end_moved_connection.disconnect();
+ this->_knot_end_ungrabbed_connection.disconnect();
+
+ /* unref should call destroy */
+ knot_unref(this->knot_start);
+ knot_unref(this->knot_end);
+
+ for (auto & measure_tmp_item : measure_tmp_items) {
+ delete measure_tmp_item;
+ }
+ measure_tmp_items.clear();
+
+ for (auto & idx : measure_item) {
+ delete idx;
+ }
+ measure_item.clear();
+
+ for (auto & measure_phantom_item : measure_phantom_items) {
+ delete measure_phantom_item;
+ }
+ measure_phantom_items.clear();
+}
+
+Geom::Point MeasureTool::readMeasurePoint(bool is_start) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ Glib::ustring measure_point = is_start ? "/tools/measure/measure-start" : "/tools/measure/measure-end";
+ return prefs->getPoint(measure_point, Geom::Point(Geom::infinity(),Geom::infinity()));
+}
+
+void MeasureTool::writeMeasurePoint(Geom::Point point, bool is_start) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ Glib::ustring measure_point = is_start ? "/tools/measure/measure-start" : "/tools/measure/measure-end";
+ prefs->setPoint(measure_point, point);
+}
+
+//This function is used to reverse the Measure, I do it in two steps because when
+//we move the knot the start_ or the end_p are overwritten so I need the original values.
+void MeasureTool::reverseKnots()
+{
+ Geom::Point start = start_p;
+ Geom::Point end = end_p;
+ this->knot_start->moveto(end);
+ this->knot_start->show();
+ this->knot_end->moveto(start);
+ this->knot_end->show();
+ start_p = end;
+ end_p = start;
+ this->showCanvasItems();
+}
+
+void MeasureTool::knotClickHandler(SPKnot *knot, guint state)
+{
+ if (state & GDK_SHIFT_MASK) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ Glib::ustring const unit_name = prefs->getString("/tools/measure/unit", "px");
+ explicit_base = explicit_base_tmp;
+ Inkscape::UI::Dialogs::KnotPropertiesDialog::showDialog(_desktop, knot, unit_name);
+ }
+}
+
+void MeasureTool::knotStartMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state)
+{
+ Geom::Point point = this->knot_start->position();
+ if (state & GDK_CONTROL_MASK) {
+ spdc_endpoint_snap_rotation(this, point, end_p, state);
+ } else if (!(state & GDK_SHIFT_MASK)) {
+ SnapManager &snap_manager = _desktop->namedview->snap_manager;
+ snap_manager.setup(_desktop);
+ Inkscape::SnapCandidatePoint scp(point, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+ scp.addOrigin(this->knot_end->position());
+ Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+ point = sp.getPoint();
+ snap_manager.unSetup();
+ }
+ if(start_p != point) {
+ start_p = point;
+ this->knot_start->moveto(start_p);
+ }
+ showCanvasItems();
+}
+
+void MeasureTool::knotEndMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state)
+{
+ Geom::Point point = this->knot_end->position();
+ if (state & GDK_CONTROL_MASK) {
+ spdc_endpoint_snap_rotation(this, point, start_p, state);
+ } else if (!(state & GDK_SHIFT_MASK)) {
+ SnapManager &snap_manager = _desktop->namedview->snap_manager;
+ snap_manager.setup(_desktop);
+ Inkscape::SnapCandidatePoint scp(point, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+ scp.addOrigin(this->knot_start->position());
+ Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+ point = sp.getPoint();
+ snap_manager.unSetup();
+ }
+ if(end_p != point) {
+ end_p = point;
+ this->knot_end->moveto(end_p);
+ }
+ showCanvasItems();
+}
+
+void MeasureTool::knotUngrabbedHandler(SPKnot */*knot*/, unsigned int state)
+{
+ this->knot_start->moveto(start_p);
+ this->knot_end->moveto(end_p);
+ showCanvasItems();
+}
+
+static void calculate_intersections(SPDesktop *desktop, SPItem *item, Geom::PathVector const &lineseg,
+ std::unique_ptr<SPCurve> &&curve, std::vector<double> &intersections)
+{
+ curve->transform(item->i2doc_affine());
+ // Find all intersections of the control-line with this shape
+ Geom::CrossingSet cs = Geom::crossings(lineseg, curve->get_pathvector());
+ Geom::delete_duplicates(cs[0]);
+
+ // Reconstruct and store the points of intersection
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool show_hidden = prefs->getBool("/tools/measure/show_hidden", true);
+ for (const auto & m : cs[0]) {
+ if (!show_hidden) {
+ double eps = 0.0001;
+ if ((m.ta > eps &&
+ item == desktop->getItemAtPoint(desktop->d2w(desktop->dt2doc(lineseg[0].pointAt(m.ta - eps))), true, nullptr)) ||
+ (m.ta + eps < 1 &&
+ item == desktop->getItemAtPoint(desktop->d2w(desktop->dt2doc(lineseg[0].pointAt(m.ta + eps))), true, nullptr))) {
+ intersections.push_back(m.ta);
+ }
+ } else {
+ intersections.push_back(m.ta);
+ }
+ }
+}
+
+bool MeasureTool::root_handler(GdkEvent* event)
+{
+ gint ret = FALSE;
+
+ switch (event->type) {
+ case GDK_BUTTON_PRESS: {
+ if (event->button.button != 1) {
+ break;
+ }
+ this->knot_start->hide();
+ this->knot_end->hide();
+ Geom::Point const button_w(event->button.x, event->button.y);
+ explicit_base = std::nullopt;
+ explicit_base_tmp = std::nullopt;
+ last_end = std::nullopt;
+
+ // save drag origin
+ start_p = _desktop->w2d(Geom::Point(event->button.x, event->button.y));
+ within_tolerance = true;
+
+ SnapManager &snap_manager = _desktop->namedview->snap_manager;
+ snap_manager.setup(_desktop);
+ snap_manager.freeSnapReturnByRef(start_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+ snap_manager.unSetup();
+
+ grabCanvasEvents(Gdk::KEY_PRESS_MASK |
+ Gdk::KEY_RELEASE_MASK |
+ Gdk::BUTTON_PRESS_MASK |
+ Gdk::BUTTON_RELEASE_MASK |
+ Gdk::POINTER_MOTION_MASK );
+ ret = TRUE;
+ break;
+ }
+ case GDK_KEY_PRESS: {
+ if ((event->key.keyval == GDK_KEY_Control_L) || (event->key.keyval == GDK_KEY_Control_R)) {
+ explicit_base_tmp = explicit_base;
+ explicit_base = end_p;
+ showInfoBox(last_pos, true);
+ }
+ break;
+ }
+ case GDK_KEY_RELEASE: {
+ if ((event->key.keyval == GDK_KEY_Control_L) || (event->key.keyval == GDK_KEY_Control_R)) {
+ showInfoBox(last_pos, false);
+ }
+ break;
+ }
+ case GDK_MOTION_NOTIFY: {
+ if (!(event->motion.state & GDK_BUTTON1_MASK)) {
+ if(!(event->motion.state & GDK_SHIFT_MASK)) {
+ Geom::Point const motion_w(event->motion.x, event->motion.y);
+ Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+ SnapManager &snap_manager = _desktop->namedview->snap_manager;
+ snap_manager.setup(_desktop);
+
+ Inkscape::SnapCandidatePoint scp(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+ scp.addOrigin(start_p);
+
+ snap_manager.preSnap(scp);
+ snap_manager.unSetup();
+ }
+ last_pos = Geom::Point(event->motion.x, event->motion.y);
+ if (event->motion.state & GDK_CONTROL_MASK) {
+ showInfoBox(last_pos, true);
+ } else {
+ showInfoBox(last_pos, false);
+ }
+ } else {
+ // Inkscape::Util::Unit const * unit = _desktop->getNamedView()->getDisplayUnit();
+ for (auto & idx : measure_item) {
+ delete idx;
+ }
+ measure_item.clear();
+
+ ret = TRUE;
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+ Geom::Point const motion_w(event->motion.x, event->motion.y);
+ if ( within_tolerance) {
+ if ( Geom::LInfty( motion_w - start_p ) < tolerance) {
+ return FALSE; // Do not drag if we're within tolerance from origin.
+ }
+ }
+ // Once the user has moved farther than tolerance from the original location
+ // (indicating they intend to move the object, not click), then always process the
+ // motion notify coordinates as given (no snapping back to origin)
+ within_tolerance = false;
+ if(event->motion.time == 0 || !last_end || Geom::LInfty( motion_w - *last_end ) > (tolerance/4.0)) {
+ Geom::Point const motion_dt(_desktop->w2d(motion_w));
+ end_p = motion_dt;
+
+ if (event->motion.state & GDK_CONTROL_MASK) {
+ spdc_endpoint_snap_rotation(this, end_p, start_p, event->motion.state);
+ } else if (!(event->motion.state & GDK_SHIFT_MASK)) {
+ SnapManager &snap_manager = _desktop->namedview->snap_manager;
+ snap_manager.setup(_desktop);
+ Inkscape::SnapCandidatePoint scp(end_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+ scp.addOrigin(start_p);
+ Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+ end_p = sp.getPoint();
+ snap_manager.unSetup();
+ }
+ showCanvasItems();
+ last_end = motion_w ;
+ }
+ gobble_motion_events(GDK_BUTTON1_MASK);
+ }
+ break;
+ }
+ case GDK_BUTTON_RELEASE: {
+ if (event->button.button != 1) {
+ break;
+ }
+ this->knot_start->moveto(start_p);
+ this->knot_start->show();
+ if(last_end) {
+ end_p = _desktop->w2d(*last_end);
+ if (event->button.state & GDK_CONTROL_MASK) {
+ spdc_endpoint_snap_rotation(this, end_p, start_p, event->motion.state);
+ } else if (!(event->button.state & GDK_SHIFT_MASK)) {
+ SnapManager &snap_manager = _desktop->namedview->snap_manager;
+ snap_manager.setup(_desktop);
+ Inkscape::SnapCandidatePoint scp(end_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+ scp.addOrigin(start_p);
+ Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+ end_p = sp.getPoint();
+ snap_manager.unSetup();
+ }
+ }
+ this->knot_end->moveto(end_p);
+ this->knot_end->show();
+ showCanvasItems();
+
+ ungrabCanvasEvents();
+ break;
+ }
+ default:
+ break;
+ }
+ if (!ret) {
+ ret = ToolBase::root_handler(event);
+ }
+
+ return ret;
+}
+
+void MeasureTool::setMarkers()
+{
+ SPDocument *doc = _desktop->getDocument();
+ SPObject *arrowStart = doc->getObjectById("Arrow2Sstart");
+ SPObject *arrowEnd = doc->getObjectById("Arrow2Send");
+ if (!arrowStart) {
+ setMarker(true);
+ }
+ if(!arrowEnd) {
+ setMarker(false);
+ }
+}
+void MeasureTool::setMarker(bool isStart)
+{
+ SPDocument *doc = _desktop->getDocument();
+ SPDefs *defs = doc->getDefs();
+ Inkscape::XML::Node *rmarker;
+ Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+ rmarker = xml_doc->createElement("svg:marker");
+ rmarker->setAttribute("id", isStart ? "Arrow2Sstart" : "Arrow2Send");
+ rmarker->setAttribute("inkscape:isstock", "true");
+ rmarker->setAttribute("inkscape:stockid", isStart ? "Arrow2Sstart" : "Arrow2Send");
+ rmarker->setAttribute("orient", "auto");
+ rmarker->setAttribute("refX", "0.0");
+ rmarker->setAttribute("refY", "0.0");
+ rmarker->setAttribute("style", "overflow:visible;");
+ SPItem *marker = SP_ITEM(defs->appendChildRepr(rmarker));
+ Inkscape::GC::release(rmarker);
+ marker->updateRepr();
+ Inkscape::XML::Node *rpath;
+ rpath = xml_doc->createElement("svg:path");
+ rpath->setAttribute("d", "M 8.72,4.03 L -2.21,0.02 L 8.72,-4.00 C 6.97,-1.63 6.98,1.62 8.72,4.03 z");
+ rpath->setAttribute("id", isStart ? "Arrow2SstartPath" : "Arrow2SendPath");
+ SPCSSAttr *css = sp_repr_css_attr_new();
+ sp_repr_css_set_property (css, "stroke", "none");
+ sp_repr_css_set_property (css, "fill", "#000000");
+ sp_repr_css_set_property (css, "fill-opacity", "1");
+ Glib::ustring css_str;
+ sp_repr_css_write_string(css,css_str);
+ rpath->setAttribute("style", css_str);
+ sp_repr_css_attr_unref (css);
+ rpath->setAttribute("transform", isStart ? "scale(0.3) translate(-2.3,0)" : "scale(0.3) rotate(180) translate(-2.3,0)");
+ SPItem *path = SP_ITEM(marker->appendChildRepr(rpath));
+ Inkscape::GC::release(rpath);
+ path->updateRepr();
+}
+
+void MeasureTool::toGuides()
+{
+ if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+ return;
+ }
+ SPDocument *doc = _desktop->getDocument();
+ Geom::Point start = _desktop->doc2dt(start_p) * _desktop->doc2dt();
+ Geom::Point end = _desktop->doc2dt(end_p) * _desktop->doc2dt();
+ Geom::Ray ray(start,end);
+ SPNamedView *namedview = _desktop->namedview;
+ if(!namedview) {
+ return;
+ }
+ setGuide(start,ray.angle(), _("Measure"));
+ if(explicit_base) {
+ auto layer = _desktop->layerManager().currentLayer();
+ explicit_base = *explicit_base * layer->i2doc_affine().inverse();
+ ray.setPoints(start, *explicit_base);
+ if(ray.angle() != 0) {
+ setGuide(start,ray.angle(), _("Base"));
+ }
+ }
+ setGuide(start,0,"");
+ setGuide(start,Geom::rad_from_deg(90),_("Start"));
+ setGuide(end,0,_("End"));
+ setGuide(end,Geom::rad_from_deg(90),"");
+ showCanvasItems(true);
+ doc->ensureUpToDate();
+ DocumentUndo::done(_desktop->getDocument(), _("Add guides from measure tool"), INKSCAPE_ICON("tool-measure"));
+}
+
+void MeasureTool::toPhantom()
+{
+ if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+ return;
+ }
+ SPDocument *doc = _desktop->getDocument();
+
+ for (auto & measure_phantom_item : measure_phantom_items) {
+ delete measure_phantom_item;
+ }
+ measure_phantom_items.clear();
+
+ for (auto & measure_tmp_item : measure_tmp_items) {
+ delete measure_tmp_item;
+ }
+ measure_tmp_items.clear();
+
+ showCanvasItems(false, false, true);
+ doc->ensureUpToDate();
+ DocumentUndo::done(_desktop->getDocument(), _("Keep last measure on the canvas, for reference"), INKSCAPE_ICON("tool-measure"));
+}
+
+void MeasureTool::toItem()
+{
+ if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+ return;
+ }
+ SPDocument *doc = _desktop->getDocument();
+ Geom::Ray ray(start_p,end_p);
+ guint32 line_color_primary = 0x0000ff7f;
+ Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+ Inkscape::XML::Node *rgroup = xml_doc->createElement("svg:g");
+ showCanvasItems(false, true, false, rgroup);
+ setLine(start_p,end_p, false, line_color_primary, rgroup);
+ SPItem *measure_item = SP_ITEM(_desktop->layerManager().currentLayer()->appendChildRepr(rgroup));
+ Inkscape::GC::release(rgroup);
+ measure_item->updateRepr();
+ doc->ensureUpToDate();
+ DocumentUndo::done(_desktop->getDocument(), _("Convert measure to items"), INKSCAPE_ICON("tool-measure"));
+ reset();
+}
+
+void MeasureTool::toMarkDimension()
+{
+ if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+ return;
+ }
+ SPDocument *doc = _desktop->getDocument();
+ setMarkers();
+ Geom::Ray ray(start_p,end_p);
+ Geom::Point start = start_p + Geom::Point::polar(ray.angle(), 5);
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ dimension_offset = prefs->getDouble("/tools/measure/offset", 5.0);
+ start = start + Geom::Point::polar(ray.angle() + Geom::rad_from_deg(90), -dimension_offset);
+ Geom::Point end = end_p + Geom::Point::polar(ray.angle(), -5);
+ end = end+ Geom::Point::polar(ray.angle() + Geom::rad_from_deg(90), -dimension_offset);
+ guint32 color = 0x000000ff;
+ setLine(start, end, true, color);
+ Glib::ustring unit_name = prefs->getString("/tools/measure/unit");
+ if (!unit_name.compare("")) {
+ unit_name = DEFAULT_UNIT_NAME;
+ }
+ double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+
+ Geom::Point middle = Geom::middle_point(start, end);
+ double totallengthval = (end_p - start_p).length();
+ totallengthval = Inkscape::Util::Quantity::convert(totallengthval, "px", unit_name);
+ double scale = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+
+
+ int precision = prefs->getInt("/tools/measure/precision", 2);
+ Glib::ustring total = Glib::ustring::format(std::fixed, std::setprecision(precision), totallengthval * scale);
+ total += unit_name;
+
+ double textangle = Geom::rad_from_deg(180) - ray.angle();
+ if (_desktop->is_yaxisdown()) {
+ textangle = ray.angle() - Geom::rad_from_deg(180);
+ }
+
+ setLabelText(total, middle, fontsize, textangle, color);
+
+ doc->ensureUpToDate();
+ DocumentUndo::done(_desktop->getDocument(), _("Add global measure line"), INKSCAPE_ICON("tool-measure"));
+}
+
+void MeasureTool::setGuide(Geom::Point origin, double angle, const char *label)
+{
+ SPDocument *doc = _desktop->getDocument();
+ Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+ SPRoot const *root = doc->getRoot();
+ Geom::Affine affine(Geom::identity());
+ if(root) {
+ affine *= root->c2p.inverse();
+ }
+ SPNamedView *namedview = _desktop->namedview;
+ if(!namedview) {
+ return;
+ }
+
+ // <sodipodi:guide> stores inverted y-axis coordinates
+ if (_desktop->is_yaxisdown()) {
+ origin[Geom::Y] = doc->getHeight().value("px") - origin[Geom::Y];
+ angle *= -1.0;
+ }
+
+ origin *= affine;
+ //measure angle
+ Inkscape::XML::Node *guide;
+ guide = xml_doc->createElement("sodipodi:guide");
+ std::stringstream position;
+ position.imbue(std::locale::classic());
+ position << origin[Geom::X] << "," << origin[Geom::Y];
+ guide->setAttribute("position", position.str() );
+ guide->setAttribute("inkscape:color", "rgb(167,0,255)");
+ guide->setAttribute("inkscape:label", label);
+ Geom::Point unit_vector = Geom::rot90(origin.polar(angle));
+ std::stringstream angle_str;
+ angle_str.imbue(std::locale::classic());
+ angle_str << unit_vector[Geom::X] << "," << unit_vector[Geom::Y];
+ guide->setAttribute("orientation", angle_str.str());
+ namedview->appendChild(guide);
+ Inkscape::GC::release(guide);
+}
+
+void MeasureTool::setLine(Geom::Point start_point,Geom::Point end_point, bool markers, guint32 color, Inkscape::XML::Node *measure_repr)
+{
+ if (!_desktop || !start_p.isFinite() || !end_p.isFinite()) {
+ return;
+ }
+ Geom::PathVector pathv;
+ Geom::Path path;
+ path.start(_desktop->doc2dt(start_point));
+ path.appendNew<Geom::LineSegment>(_desktop->doc2dt(end_point));
+ pathv.push_back(path);
+ pathv *= _desktop->layerManager().currentLayer()->i2doc_affine().inverse();
+ if(!pathv.empty()) {
+ setMeasureItem(pathv, false, markers, color, measure_repr);
+ }
+}
+
+void MeasureTool::setPoint(Geom::Point origin, Inkscape::XML::Node *measure_repr)
+{
+ if (!_desktop || !origin.isFinite()) {
+ return;
+ }
+ char const * svgd;
+ svgd = "m 0.707,0.707 6.586,6.586 m 0,-6.586 -6.586,6.586";
+ Geom::PathVector pathv = sp_svg_read_pathv(svgd);
+ Geom::Scale scale = Geom::Scale(_desktop->current_zoom()).inverse();
+ pathv *= Geom::Translate(Geom::Point(-3.5,-3.5));
+ pathv *= scale;
+ pathv *= Geom::Translate(Geom::Point() - (scale.vector() * 0.5));
+ pathv *= Geom::Translate(_desktop->doc2dt(origin));
+ pathv *= _desktop->layerManager().currentLayer()->i2doc_affine().inverse();
+ if (!pathv.empty()) {
+ guint32 line_color_secondary = 0xff0000ff;
+ setMeasureItem(pathv, false, false, line_color_secondary, measure_repr);
+ }
+}
+
+void MeasureTool::setLabelText(Glib::ustring const &value, Geom::Point pos, double fontsize, Geom::Coord angle,
+ guint32 background, Inkscape::XML::Node *measure_repr)
+{
+ Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+ /* Create <text> */
+ pos = _desktop->doc2dt(pos);
+ Inkscape::XML::Node *rtext = xml_doc->createElement("svg:text");
+ rtext->setAttribute("xml:space", "preserve");
+
+
+ /* Set style */
+ sp_desktop_apply_style_tool(_desktop, rtext, "/tools/text", true);
+ if(measure_repr) {
+ rtext->setAttributeSvgDouble("x", 2);
+ rtext->setAttributeSvgDouble("y", 2);
+ } else {
+ rtext->setAttributeSvgDouble("x", 0);
+ rtext->setAttributeSvgDouble("y", 0);
+ }
+
+ /* Create <tspan> */
+ Inkscape::XML::Node *rtspan = xml_doc->createElement("svg:tspan");
+ rtspan->setAttribute("sodipodi:role", "line");
+ SPCSSAttr *css = sp_repr_css_attr_new();
+ std::stringstream font_size;
+ font_size.imbue(std::locale::classic());
+ if(measure_repr) {
+ font_size << fontsize;
+ } else {
+ font_size << fontsize << "pt";
+ }
+ sp_repr_css_set_property (css, "font-size", font_size.str().c_str());
+ sp_repr_css_set_property (css, "font-style", "normal");
+ sp_repr_css_set_property (css, "font-weight", "normal");
+ sp_repr_css_set_property (css, "line-height", "125%");
+ sp_repr_css_set_property (css, "letter-spacing", "0");
+ sp_repr_css_set_property (css, "word-spacing", "0");
+ sp_repr_css_set_property (css, "text-align", "center");
+ sp_repr_css_set_property (css, "text-anchor", "middle");
+ if(measure_repr) {
+ sp_repr_css_set_property (css, "fill", "#FFFFFF");
+ } else {
+ sp_repr_css_set_property (css, "fill", "#000000");
+ }
+ sp_repr_css_set_property (css, "fill-opacity", "1");
+ sp_repr_css_set_property (css, "stroke", "none");
+ Glib::ustring css_str;
+ sp_repr_css_write_string(css,css_str);
+ rtspan->setAttribute("style", css_str);
+ sp_repr_css_attr_unref (css);
+ rtext->addChild(rtspan, nullptr);
+ Inkscape::GC::release(rtspan);
+ /* Create TEXT */
+ Inkscape::XML::Node *rstring = xml_doc->createTextNode(value.c_str());
+ rtspan->addChild(rstring, nullptr);
+ Inkscape::GC::release(rstring);
+ auto layer = _desktop->layerManager().currentLayer();
+ auto text_item = dynamic_cast<SPText*>(layer->appendChildRepr(rtext));
+ Inkscape::GC::release(rtext);
+ text_item->rebuildLayout();
+ text_item->updateRepr();
+ Geom::OptRect bbox = text_item->geometricBounds();
+ if (!measure_repr && bbox) {
+ Geom::Point center = bbox->midpoint();
+ text_item->transform *= Geom::Translate(center).inverse();
+ pos += Geom::Point::polar(angle+ Geom::rad_from_deg(90), -bbox->height());
+ }
+ if(measure_repr) {
+ /* Create <group> */
+ Inkscape::XML::Node *rgroup = xml_doc->createElement("svg:g");
+ /* Create <rect> */
+ Inkscape::XML::Node *rrect = xml_doc->createElement("svg:rect");
+ SPCSSAttr *css = sp_repr_css_attr_new ();
+ gchar color_line[64];
+ sp_svg_write_color (color_line, sizeof(color_line), background);
+ sp_repr_css_set_property (css, "fill", color_line);
+ sp_repr_css_set_property (css, "fill-opacity", "0.5");
+ sp_repr_css_set_property (css, "stroke-width", "0");
+ Glib::ustring css_str;
+ sp_repr_css_write_string(css,css_str);
+ rrect->setAttribute("style", css_str);
+ sp_repr_css_attr_unref (css);
+ rgroup->setAttributeSvgDouble("x", 0);
+ rgroup->setAttributeSvgDouble("y", 0);
+ rrect->setAttributeSvgDouble("x", -bbox->width()/2.0);
+ rrect->setAttributeSvgDouble("y", -bbox->height());
+ rrect->setAttributeSvgDouble("width", bbox->width() + 6);
+ rrect->setAttributeSvgDouble("height", bbox->height() + 6);
+ Inkscape::XML::Node *rtextitem = text_item->getRepr();
+ text_item->deleteObject();
+ rgroup->addChild(rtextitem, nullptr);
+ Inkscape::GC::release(rtextitem);
+ rgroup->addChild(rrect, nullptr);
+ Inkscape::GC::release(rrect);
+ SPItem *text_item_box = SP_ITEM(layer->appendChildRepr(rgroup));
+ Geom::Scale scale = Geom::Scale(_desktop->current_zoom()).inverse();
+ if(bbox) {
+ text_item_box->transform *= Geom::Translate(bbox->midpoint() - Geom::Point(1.0,1.0)).inverse();
+ }
+ text_item_box->transform *= scale;
+ text_item_box->transform *= Geom::Translate(Geom::Point() - (scale.vector() * 0.5));
+ text_item_box->transform *= Geom::Translate(pos);
+ text_item_box->transform *= layer->i2doc_affine().inverse();
+ text_item_box->updateRepr();
+ text_item_box->doWriteTransform(text_item_box->transform, nullptr, true);
+ Inkscape::XML::Node *rlabel = text_item_box->getRepr();
+ text_item_box->deleteObject();
+ measure_repr->addChild(rlabel, nullptr);
+ Inkscape::GC::release(rlabel);
+ } else {
+ text_item->transform *= Geom::Rotate(angle);
+ text_item->transform *= Geom::Translate(pos);
+ text_item->transform *= layer->i2doc_affine().inverse();
+ text_item->doWriteTransform(text_item->transform, nullptr, true);
+ }
+}
+
+void MeasureTool::reset()
+{
+ this->knot_start->hide();
+ this->knot_end->hide();
+
+ for (auto & measure_tmp_item : measure_tmp_items) {
+ delete measure_tmp_item;
+ }
+ measure_tmp_items.clear();
+}
+
+void MeasureTool::setMeasureCanvasText(bool is_angle, double precision, double amount, double fontsize,
+ Glib::ustring unit_name, Geom::Point position, guint32 background,
+ bool to_left, bool to_item,
+ bool to_phantom, Inkscape::XML::Node *measure_repr)
+{
+ Glib::ustring measure = Glib::ustring::format(std::setprecision(precision), std::fixed, amount);
+ measure += " ";
+ measure += (is_angle ? "°" : unit_name);
+ auto canvas_tooltip = new Inkscape::CanvasItemText(_desktop->getCanvasTemp(), position, measure);
+ canvas_tooltip->set_fontsize(fontsize);
+ canvas_tooltip->set_fill(0xffffffff);
+ canvas_tooltip->set_background(background);
+ if (to_left) {
+ canvas_tooltip->set_anchor(Geom::Point(0, 0.5));
+ } else {
+ canvas_tooltip->set_anchor(Geom::Point(0.5, 0.5));
+ }
+
+ if (to_phantom){
+ canvas_tooltip->set_background(0x4444447f);
+ measure_phantom_items.push_back(canvas_tooltip);
+ } else {
+ measure_tmp_items.push_back(canvas_tooltip);
+ }
+
+ if (to_item) {
+ setLabelText(measure, position, fontsize, 0, background, measure_repr);
+ }
+
+ canvas_tooltip->show();
+
+}
+
+void MeasureTool::setMeasureCanvasItem(Geom::Point position, bool to_item, bool to_phantom, Inkscape::XML::Node *measure_repr){
+ guint32 color = 0xff0000ff;
+ if (to_phantom){
+ color = 0x888888ff;
+ }
+
+ auto canvas_item = new Inkscape::CanvasItemCtrl(_desktop->getCanvasTemp(), Inkscape::CANVAS_ITEM_CTRL_TYPE_POINT, position);
+ canvas_item->set_stroke(color);
+ canvas_item->set_z_position(0);
+ canvas_item->set_pickable(false);
+ canvas_item->show();
+
+ if (to_phantom){
+ measure_phantom_items.emplace_back(canvas_item);
+ } else {
+ measure_tmp_items.emplace_back(canvas_item);
+ }
+
+ if(to_item) {
+ setPoint(position, measure_repr);
+ }
+}
+
+void MeasureTool::setMeasureCanvasControlLine(Geom::Point start, Geom::Point end, bool to_item, bool to_phantom,
+ Inkscape::CanvasItemColor ctrl_line_type,
+ Inkscape::XML::Node *measure_repr){
+ gint32 color = (ctrl_line_type == Inkscape::CANVAS_ITEM_PRIMARY) ? 0x0000ff7f : 0xff00007f;
+ if (to_phantom) {
+ color = (ctrl_line_type == Inkscape::CANVAS_ITEM_PRIMARY) ? 0x4444447f : 0x8888887f;
+ }
+
+ auto control_line = new Inkscape::CanvasItemCurve(_desktop->getCanvasTemp(), start, end);
+ control_line->set_stroke(color);
+ control_line->set_z_position(0);
+ control_line->show();
+
+ if (to_phantom) {
+ measure_phantom_items.emplace_back(control_line);
+ } else {
+ measure_tmp_items.emplace_back(control_line);
+ }
+
+ if (to_item) {
+ setLine(start, end, false, color, measure_repr);
+ }
+}
+
+// This is the text that follows the cursor around.
+void MeasureTool::showItemInfoText(Geom::Point pos, Glib::ustring const &measure_str, double fontsize)
+{
+ auto canvas_tooltip = new CanvasItemText(_desktop->getCanvasTemp(), pos, measure_str);
+ canvas_tooltip->set_fontsize(fontsize);
+ canvas_tooltip->set_fill(0xffffffff);
+ canvas_tooltip->set_background(0x00000099);
+ canvas_tooltip->set_anchor(Geom::Point(0, 0));
+ canvas_tooltip->set_fixed_line(true);
+ canvas_tooltip->show();
+ measure_item.push_back(canvas_tooltip);
+}
+
+void MeasureTool::showInfoBox(Geom::Point cursor, bool into_groups)
+{
+ using Inkscape::Util::Quantity;
+
+ for (auto & idx : measure_item) {
+ delete(idx);
+ }
+ measure_item.clear();
+
+ SPItem *newover = _desktop->getItemAtPoint(cursor, into_groups);
+ if (!newover) {
+ // Clear over when the cursor isn't over anything.
+ over = nullptr;
+ return;
+ }
+ Inkscape::Util::Unit const *unit = _desktop->getNamedView()->getDisplayUnit();
+
+ // Load preferences for measuring the new object.
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ int precision = prefs->getInt("/tools/measure/precision", 2);
+ bool selected = prefs->getBool("/tools/measure/only_selected", false);
+ auto box_type = prefs->getBool("/tools/bounding_box", false) ? SPItem::GEOMETRIC_BBOX : SPItem::VISUAL_BBOX;
+ double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+ double scale = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+ Glib::ustring unit_name = prefs->getString("/tools/measure/unit", unit->abbr);
+
+ Geom::Scale zoom = Geom::Scale(Quantity::convert(_desktop->current_zoom(), "px", unit->abbr)).inverse();
+
+ if(newover != over) {
+ // Get information for the item, and cache it to save time.
+ over = newover;
+ auto affine = over->i2dt_affine() * Geom::Scale(scale);
+ if (auto bbox = over->bounds(box_type, affine)) {
+ item_width = Quantity::convert(bbox->width(), "px", unit_name);
+ item_height = Quantity::convert(bbox->height(), "px", unit_name);
+ item_x = Quantity::convert(bbox->left(), "px", unit_name);
+ item_y = Quantity::convert(bbox->top(), "px", unit_name);
+
+ if (auto shape = dynamic_cast<SPShape *>(over)) {
+ auto pw = paths_to_pw(shape->curve()->get_pathvector());
+ item_length = Quantity::convert(Geom::length(pw * affine), "px", unit_name);
+ }
+ }
+ }
+
+ gchar *measure_str = nullptr;
+ std::stringstream precision_str;
+ precision_str.imbue(std::locale::classic());
+ double origin = Quantity::convert(14, "px", unit->abbr);
+ Geom::Point rel_position = Geom::Point(origin, origin);
+ Geom::Point pos = _desktop->w2d(cursor);
+ double gap = Quantity::convert(7 + fontsize, "px", unit->abbr);
+ double yaxisdir = _desktop->yaxisdir();
+
+ if (selected) {
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), _desktop->getSelection()->includes(over) ? _("Selected") : _("Not selected"), fontsize);
+ rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+ }
+
+ if (SP_IS_SHAPE(over)) {
+
+ precision_str << _("Length") << ": %." << precision << "f %s";
+ measure_str = g_strdup_printf(precision_str.str().c_str(), item_length, unit_name.c_str());
+ precision_str.str("");
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+ rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+ } else if (SP_IS_GROUP(over)) {
+
+ measure_str = _("Press 'CTRL' to measure into group");
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+ rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+ }
+
+ precision_str << "Y: %." << precision << "f %s";
+ measure_str = g_strdup_printf(precision_str.str().c_str(), item_y, unit_name.c_str());
+ precision_str.str("");
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+ rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+ precision_str << "X: %." << precision << "f %s";
+ measure_str = g_strdup_printf(precision_str.str().c_str(), item_x, unit_name.c_str());
+ precision_str.str("");
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+ rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+ precision_str << _("Height") << ": %." << precision << "f %s";
+ measure_str = g_strdup_printf(precision_str.str().c_str(), item_height, unit_name.c_str());
+ precision_str.str("");
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+ rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+ precision_str << _("Width") << ": %." << precision << "f %s";
+ measure_str = g_strdup_printf(precision_str.str().c_str(), item_width, unit_name.c_str());
+ precision_str.str("");
+ showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+ g_free(measure_str);
+}
+
+void MeasureTool::showCanvasItems(bool to_guides, bool to_item, bool to_phantom, Inkscape::XML::Node *measure_repr)
+{
+ if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+ return;
+ }
+ writeMeasurePoint(start_p, true);
+ writeMeasurePoint(end_p, false);
+
+ //clear previous canvas items, we'll draw new ones
+ for (auto & measure_tmp_item : measure_tmp_items) {
+ delete measure_tmp_item;
+ }
+ measure_tmp_items.clear();
+
+ //TODO:Calculate the measure area for current length and origin
+ // and use canvas->requestRedraw. In the calculation need a gap for outside text
+ // maybe this remove the trash lines on measure use
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool show_in_between = prefs->getBool("/tools/measure/show_in_between", true);
+ bool all_layers = prefs->getBool("/tools/measure/all_layers", true);
+ dimension_offset = 70;
+ Geom::PathVector lineseg;
+ Geom::Path p;
+ Geom::Point start_p_doc = start_p * _desktop->dt2doc();
+ Geom::Point end_p_doc = end_p * _desktop->dt2doc();
+ p.start(start_p_doc);
+ p.appendNew<Geom::LineSegment>(end_p_doc);
+ lineseg.push_back(p);
+
+ double angle = atan2(end_p - start_p);
+ double baseAngle = 0;
+
+ if (explicit_base) {
+ baseAngle = atan2(*explicit_base - start_p);
+ angle -= baseAngle;
+
+ // make sure that the angle is between -pi and pi.
+ if (angle > M_PI) {
+ angle -= 2 * M_PI;
+ }
+ if (angle < -M_PI) {
+ angle += 2 * M_PI;
+ }
+ }
+
+ std::vector<SPItem*> items;
+ SPDocument *doc = _desktop->getDocument();
+ Geom::Rect rect(start_p_doc, end_p_doc);
+ items = doc->getItemsPartiallyInBox(_desktop->dkey, rect, false, true, false, true);
+ SPGroup *current_layer = _desktop->layerManager().currentLayer();
+
+ std::vector<double> intersection_times;
+ bool only_selected = prefs->getBool("/tools/measure/only_selected", false);
+ for (auto i : items) {
+ SPItem *item = i;
+ if (!_desktop->getSelection()->includes(i) && only_selected) {
+ continue;
+ }
+ if (all_layers || _desktop->layerManager().layerForObject(item) == current_layer) {
+ if (auto shape = dynamic_cast<SPShape const *>(item)) {
+ calculate_intersections(_desktop, item, lineseg, SPCurve::copy(shape->curve()), intersection_times);
+ } else {
+ if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
+ Inkscape::Text::Layout::iterator iter = te_get_layout(item)->begin();
+ do {
+ Inkscape::Text::Layout::iterator iter_next = iter;
+ iter_next.nextGlyph(); // iter_next is one glyph ahead from iter
+ if (iter == iter_next) {
+ break;
+ }
+
+ // get path from iter to iter_next:
+ auto curve = te_get_layout(item)->convertToCurves(iter, iter_next);
+ iter = iter_next; // shift to next glyph
+ if (!curve) {
+ continue; // error converting this glyph
+ }
+ if (curve->is_empty()) { // whitespace glyph?
+ continue;
+ }
+
+ calculate_intersections(_desktop, item, lineseg, std::move(curve), intersection_times);
+ if (iter == te_get_layout(item)->end()) {
+ break;
+ }
+ } while (true);
+ }
+ }
+ }
+ }
+ Glib::ustring unit_name = prefs->getString("/tools/measure/unit");
+ if (!unit_name.compare("")) {
+ unit_name = DEFAULT_UNIT_NAME;
+ }
+ double scale = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+ double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+ // Normal will be used for lines and text
+ Geom::Point windowNormal = Geom::unit_vector(Geom::rot90(_desktop->d2w(end_p - start_p)));
+ Geom::Point normal = _desktop->w2d(windowNormal);
+
+ std::vector<Geom::Point> intersections;
+ std::sort(intersection_times.begin(), intersection_times.end());
+ for (double & intersection_time : intersection_times) {
+ intersections.push_back(lineseg[0].pointAt(intersection_time));
+ }
+
+ if(!show_in_between && intersection_times.size() > 1) {
+ Geom::Point start = lineseg[0].pointAt(intersection_times[0]);
+ Geom::Point end = lineseg[0].pointAt(intersection_times[intersection_times.size()-1]);
+ intersections.clear();
+ intersections.push_back(start);
+ intersections.push_back(end);
+ }
+ if (!prefs->getBool("/tools/measure/ignore_1st_and_last", true)) {
+ intersections.insert(intersections.begin(),lineseg[0].pointAt(0));
+ intersections.push_back(lineseg[0].pointAt(1));
+ }
+ std::vector<LabelPlacement> placements;
+ for (size_t idx = 1; idx < intersections.size(); ++idx) {
+ LabelPlacement placement;
+ placement.lengthVal = (intersections[idx] - intersections[idx - 1]).length();
+ placement.lengthVal = Inkscape::Util::Quantity::convert(placement.lengthVal, "px", unit_name);
+ placement.offset = dimension_offset / 2;
+ placement.start = _desktop->doc2dt((intersections[idx - 1] + intersections[idx]) / 2);
+ placement.end = placement.start - (normal * placement.offset);
+
+ placements.push_back(placement);
+ }
+ int precision = prefs->getInt("/tools/measure/precision", 2);
+ // Adjust positions
+ repositionOverlappingLabels(placements, _desktop, windowNormal, fontsize, precision);
+ for (auto & place : placements) {
+ setMeasureCanvasText(false, precision, place.lengthVal * scale, fontsize, unit_name, place.end, 0x0000007f,
+ false, to_item, to_phantom, measure_repr);
+ }
+ Geom::Point angleDisplayPt = calcAngleDisplayAnchor(_desktop, angle, baseAngle, start_p, end_p, fontsize);
+
+ setMeasureCanvasText(true, precision, Geom::deg_from_rad(angle), fontsize, unit_name, angleDisplayPt, 0x337f337f,
+ false, to_item, to_phantom, measure_repr);
+
+ {
+ double totallengthval = (end_p - start_p).length();
+ totallengthval = Inkscape::Util::Quantity::convert(totallengthval, "px", unit_name);
+ Geom::Point origin = end_p + _desktop->w2d(Geom::Point(3 * fontsize, -fontsize));
+ setMeasureCanvasText(false, precision, totallengthval * scale, fontsize, unit_name, origin, 0x3333337f,
+ true, to_item, to_phantom, measure_repr);
+ }
+
+ if (intersections.size() > 2) {
+ double totallengthval = (intersections[intersections.size()-1] - intersections[0]).length();
+ totallengthval = Inkscape::Util::Quantity::convert(totallengthval, "px", unit_name);
+ Geom::Point origin = _desktop->doc2dt((intersections[0] + intersections[intersections.size()-1])/2) + normal * dimension_offset;
+ setMeasureCanvasText(false, precision, totallengthval * scale, fontsize, unit_name, origin, 0x33337f7f,
+ false, to_item, to_phantom, measure_repr);
+ }
+
+ // Initial point
+ setMeasureCanvasItem(start_p, false, to_phantom, measure_repr);
+
+ // Now that text has been added, we can add lines and controls so that they go underneath
+ for (size_t idx = 0; idx < intersections.size(); ++idx) {
+ setMeasureCanvasItem(_desktop->doc2dt(intersections[idx]), to_item, to_phantom, measure_repr);
+ if(to_guides) {
+ gchar *cross_number;
+ if (!prefs->getBool("/tools/measure/ignore_1st_and_last", true)) {
+ cross_number= g_strdup_printf(_("Crossing %lu"), static_cast<unsigned long>(idx));
+ } else {
+ cross_number= g_strdup_printf(_("Crossing %lu"), static_cast<unsigned long>(idx + 1));
+ }
+ if (!prefs->getBool("/tools/measure/ignore_1st_and_last", true) && idx == 0) {
+ setGuide(_desktop->doc2dt(intersections[idx]), angle + Geom::rad_from_deg(90), "");
+ } else {
+ setGuide(_desktop->doc2dt(intersections[idx]), angle + Geom::rad_from_deg(90), cross_number);
+ }
+ g_free(cross_number);
+ }
+ }
+ // Since adding goes to the bottom, do all lines last.
+
+ // draw main control line
+ {
+ setMeasureCanvasControlLine(start_p, end_p, false, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY, measure_repr);
+ double length = std::abs((end_p - start_p).length());
+ Geom::Point anchorEnd = start_p;
+ anchorEnd[Geom::X] += length;
+ if (explicit_base) {
+ anchorEnd *= (Geom::Affine(Geom::Translate(-start_p))
+ * Geom::Affine(Geom::Rotate(baseAngle))
+ * Geom::Affine(Geom::Translate(start_p)));
+ }
+ setMeasureCanvasControlLine(start_p, anchorEnd, to_item, to_phantom, Inkscape::CANVAS_ITEM_SECONDARY, measure_repr);
+ createAngleDisplayCurve(start_p, end_p, angleDisplayPt, angle, to_phantom, measure_phantom_items, measure_tmp_items, measure_repr);
+ }
+
+ if (intersections.size() > 2) {
+ setMeasureCanvasControlLine(_desktop->doc2dt(intersections[0]) + normal * dimension_offset, _desktop->doc2dt(intersections[intersections.size() - 1]) + normal * dimension_offset, to_item, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY , measure_repr);
+
+ setMeasureCanvasControlLine(_desktop->doc2dt(intersections[0]), _desktop->doc2dt(intersections[0]) + normal * dimension_offset, to_item, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY , measure_repr);
+
+ setMeasureCanvasControlLine(_desktop->doc2dt(intersections[intersections.size() - 1]), _desktop->doc2dt(intersections[intersections.size() - 1]) + normal * dimension_offset, to_item, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY , measure_repr);
+ }
+
+ // call-out lines
+ for (auto & place : placements) {
+ setMeasureCanvasControlLine(place.start, place.end, to_item, to_phantom, Inkscape::CANVAS_ITEM_SECONDARY, measure_repr);
+ }
+
+ {
+ for (size_t idx = 1; idx < intersections.size(); ++idx) {
+ Geom::Point measure_text_pos = (intersections[idx - 1] + intersections[idx]) / 2;
+ setMeasureCanvasControlLine(_desktop->doc2dt(measure_text_pos), _desktop->doc2dt(measure_text_pos) - (normal * dimension_offset / 2), to_item, to_phantom, Inkscape::CANVAS_ITEM_SECONDARY, measure_repr);
+ }
+ }
+}
+
+/**
+ * Create a measure item in current document.
+ *
+ * @param pathv the path to create.
+ * @param markers if the path results get markers.
+ * @param color of the stroke.
+ * @param measure_repr container element.
+ */
+void MeasureTool::setMeasureItem(Geom::PathVector pathv, bool is_curve, bool markers, guint32 color, Inkscape::XML::Node *measure_repr)
+{
+ if(!_desktop) {
+ return;
+ }
+ SPDocument *doc = _desktop->getDocument();
+ Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+ Inkscape::XML::Node *repr;
+ repr = xml_doc->createElement("svg:path");
+ auto str = sp_svg_write_path(pathv);
+ SPCSSAttr *css = sp_repr_css_attr_new();
+ auto layer = _desktop->layerManager().currentLayer();
+ Geom::Coord strokewidth = layer->i2doc_affine().inverse().expansionX();
+ std::stringstream stroke_width;
+ stroke_width.imbue(std::locale::classic());
+ if(measure_repr) {
+ stroke_width << strokewidth / _desktop->current_zoom();
+ } else {
+ stroke_width << strokewidth;
+ }
+ sp_repr_css_set_property (css, "stroke-width", stroke_width.str().c_str());
+ sp_repr_css_set_property (css, "fill", "none");
+ if(color) {
+ gchar color_line[64];
+ sp_svg_write_color (color_line, sizeof(color_line), color);
+ sp_repr_css_set_property (css, "stroke", color_line);
+ } else {
+ sp_repr_css_set_property (css, "stroke", "#ff0000");
+ }
+ char const * stroke_linecap = is_curve ? "butt" : "square";
+ sp_repr_css_set_property (css, "stroke-linecap", stroke_linecap);
+ sp_repr_css_set_property (css, "stroke-linejoin", "miter");
+ sp_repr_css_set_property (css, "stroke-miterlimit", "4");
+ sp_repr_css_set_property (css, "stroke-dasharray", "none");
+ if(measure_repr) {
+ sp_repr_css_set_property (css, "stroke-opacity", "0.5");
+ } else {
+ sp_repr_css_set_property (css, "stroke-opacity", "1");
+ }
+ if(markers) {
+ sp_repr_css_set_property (css, "marker-start", "url(#Arrow2Sstart)");
+ sp_repr_css_set_property (css, "marker-end", "url(#Arrow2Send)");
+ }
+ Glib::ustring css_str;
+ sp_repr_css_write_string(css,css_str);
+ repr->setAttribute("style", css_str);
+ sp_repr_css_attr_unref (css);
+ repr->setAttribute("d", str);
+ if(measure_repr) {
+ measure_repr->addChild(repr, nullptr);
+ Inkscape::GC::release(repr);
+ } else {
+ SPItem *item = SP_ITEM(layer->appendChildRepr(repr));
+ Inkscape::GC::release(repr);
+ item->updateRepr();
+ _desktop->getSelection()->clear();
+ _desktop->getSelection()->add(item);
+ }
+}
+}
+}
+}
+
+/*
+ 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 :