226 lines
8.4 KiB
C++
226 lines
8.4 KiB
C++
/***************************************************************************
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* Copyright (c) 2013 Yorik van Havre <yorik@uncreated.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <sstream>
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# include <QDomDocument>
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# include "QDomNodeModel.h"
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# include <QXmlQuery>
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# include <QXmlResultItems>
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#endif
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#include <Base/Console.h>
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#include "DrawViewSymbol.h"
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#include "DrawViewSymbolPy.h" // generated from DrawViewSymbolPy.xml
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#include "DrawPage.h"
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#include "DrawUtil.h"
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using namespace TechDraw;
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//===========================================================================
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// DrawViewSymbol
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//===========================================================================
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PROPERTY_SOURCE(TechDraw::DrawViewSymbol, TechDraw::DrawView)
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DrawViewSymbol::DrawViewSymbol()
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{
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static const char *vgroup = "Drawing view";
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ADD_PROPERTY_TYPE(Symbol, (""), vgroup, App::Prop_None, "The SVG code defining this symbol");
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ADD_PROPERTY_TYPE(EditableTexts, (""), vgroup, App::Prop_None, "Substitution values for the editable strings in this symbol");
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ScaleType.setValue("Custom");
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Scale.setStatus(App::Property::ReadOnly, false);
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Symbol.setStatus(App::Property::Hidden, true);
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}
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DrawViewSymbol::~DrawViewSymbol()
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{
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}
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void DrawViewSymbol::onChanged(const App::Property* prop)
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{
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if (prop == &Symbol) {
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if (!isRestoring() && !Symbol.isEmpty()) {
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std::vector<std::string> editables = getEditableFields();
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EditableTexts.setValues(editables);
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}
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} else if (prop == &EditableTexts) {
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//this will change Symbol, which will call onChanged(Symbol),
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//which will change EditableTexts, but the loop stops after
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//1 cycle
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updateFieldsInSymbol();
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}
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TechDraw::DrawView::onChanged(prop);
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}
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App::DocumentObjectExecReturn *DrawViewSymbol::execute()
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{
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//nothing to do. DVS is just a container for properties.
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//the action takes place on the Gui side.
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return DrawView::execute();
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}
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QRectF DrawViewSymbol::getRect() const
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{
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double w = 64.0; //must default to something
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double h = 64.0;
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return (QRectF(0, 0,w, h));
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}
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//!Assume all svg files fit the page and/or the user will scale manually
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bool DrawViewSymbol::checkFit(TechDraw::DrawPage* p) const
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{
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(void)p;
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bool result = true;
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return result;
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}
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//get editable fields from symbol
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std::vector<std::string> DrawViewSymbol::getEditableFields()
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{
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QDomDocument symbolDocument;
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QXmlResultItems queryResult;
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std::vector<std::string> editables;
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bool rc = loadQDomDocument(symbolDocument);
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if (rc) {
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QDomElement symbolDocElem = symbolDocument.documentElement();
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QXmlQuery query(QXmlQuery::XQuery10);
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QDomNodeModel model(query.namePool(), symbolDocument);
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query.setFocus(QXmlItem(model.fromDomNode(symbolDocument.documentElement())));
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// XPath query to select all <tspan> nodes whose <text> parent
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// has "freecad:editable" attribute
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query.setQuery(QString::fromUtf8(
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"declare default element namespace \"" SVG_NS_URI "\"; "
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"declare namespace freecad=\"" FREECAD_SVG_NS_URI "\"; "
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"//text[@freecad:editable]/tspan"));
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query.evaluateTo(&queryResult);
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while (!queryResult.next().isNull()) {
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QDomElement tspan = model.toDomNode(queryResult.current().toNodeModelIndex()).toElement();
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QString editableValue = tspan.firstChild().nodeValue();
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editables.emplace_back(editableValue.toUtf8().constData());
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}
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}
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return editables;
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}
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//replace editable field in symbol with values from property
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void DrawViewSymbol::updateFieldsInSymbol()
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{
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const std::vector<std::string>& editText = EditableTexts.getValues();
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if (editText.empty()) {
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return;
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}
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QDomDocument symbolDocument;
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QXmlResultItems queryResult;
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bool rc = loadQDomDocument(symbolDocument);
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if (rc) {
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QDomElement symbolDocElem = symbolDocument.documentElement();
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QXmlQuery query(QXmlQuery::XQuery10);
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QDomNodeModel model(query.namePool(), symbolDocument);
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query.setFocus(QXmlItem(model.fromDomNode(symbolDocElem)));
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// XPath query to select all <tspan> nodes whose <text> parent
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// has "freecad:editable" attribute
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query.setQuery(QString::fromUtf8(
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"declare default element namespace \"" SVG_NS_URI "\"; "
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"declare namespace freecad=\"" FREECAD_SVG_NS_URI "\"; "
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"//text[@freecad:editable]/tspan"));
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query.evaluateTo(&queryResult);
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unsigned int count = 0;
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while (!queryResult.next().isNull())
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{
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QDomElement tspanElement = model.toDomNode(queryResult.current().toNodeModelIndex()).toElement();
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// Keep all spaces in the text node
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tspanElement.setAttribute(QString::fromUtf8("xml:space"), QString::fromUtf8("preserve"));
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// Remove all child nodes (if any)
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while (!tspanElement.lastChild().isNull()) {
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tspanElement.removeChild(tspanElement.lastChild());
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}
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// Finally append text node with editable replacement as the only <tspan> descendant
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tspanElement.appendChild(symbolDocument.createTextNode(
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QString::fromUtf8(editText[count].c_str())));
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++count;
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}
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Symbol.setValue(symbolDocument.toString(1).toStdString());
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}
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}
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//load QDomDocument
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bool DrawViewSymbol::loadQDomDocument(QDomDocument& symbolDocument)
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{
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const char* symbol = Symbol.getValue();
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QByteArray qba(symbol);
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QString errorMsg;
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int errorLine;
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int errorCol;
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bool nsProcess = false;
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bool rc = symbolDocument.setContent(qba, nsProcess, &errorMsg, &errorLine, &errorCol);
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if (!rc) {
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//invalid SVG message
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Base::Console().Warning("DrawViewSymbol - %s - SVG for Symbol is not valid. See log.\n");
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Base::Console().Log("DrawViewSymbol - %s - len: %d rc: %d error: %s line: %d col: %d\n",
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getNameInDocument(), strlen(symbol), rc,
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qPrintable(errorMsg), errorLine, errorCol);
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}
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return rc;
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}
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PyObject *DrawViewSymbol::getPyObject()
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{
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if (PythonObject.is(Py::_None())) {
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// ref counter is set to 1
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PythonObject = Py::Object(new DrawViewSymbolPy(this), true);
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}
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return Py::new_reference_to(PythonObject);
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}
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// Python Drawing feature ---------------------------------------------------------
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namespace App {
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/// @cond DOXERR
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PROPERTY_SOURCE_TEMPLATE(TechDraw::DrawViewSymbolPython, TechDraw::DrawViewSymbol)
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template<> const char* TechDraw::DrawViewSymbolPython::getViewProviderName() const {
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return "TechDrawGui::ViewProviderSymbol";
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}
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/// @endcond
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// explicit template instantiation
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template class TechDrawExport FeaturePythonT<TechDraw::DrawViewSymbol>;
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}
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