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| -rw-r--r-- | src/ui/tools/measure-tool.cpp | 1470 |
1 files changed, 1470 insertions, 0 deletions
diff --git a/src/ui/tools/measure-tool.cpp b/src/ui/tools/measure-tool.cpp new file mode 100644 index 0000000..d9ba7b1 --- /dev/null +++ b/src/ui/tools/measure-tool.cpp @@ -0,0 +1,1470 @@ +// 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 ¢er, 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 : |