FreeCAD

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/***************************************************************************
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 *   Copyright (c) Yorik van Havre <yorik@uncreated.net> 2012              *
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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 <iostream>
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#include <sstream>
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#endif
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#include "FeatureClip.h"
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#include "FeatureView.h"
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using namespace Drawing;
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using namespace std;
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//===========================================================================
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// FeaturePage
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//===========================================================================
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PROPERTY_SOURCE(Drawing::FeatureClip, App::DocumentObjectGroup)
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FeatureClip::FeatureClip(void)
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{
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    static const char* group = "Drawing view";
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    App::PropertyType hidden = (App::PropertyType)(App::Prop_Hidden);
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    ADD_PROPERTY_TYPE(ViewResult, (""), group, hidden, "Resulting SVG view of this clip");
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    ADD_PROPERTY_TYPE(X,
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                      (10),
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                      group,
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                      App::Prop_None,
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                      "The left margin of the view area of this clip");
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    ADD_PROPERTY_TYPE(Y,
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                      (10),
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                      group,
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                      App::Prop_None,
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                      "The top margin of the view area of this clip");
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    ADD_PROPERTY_TYPE(Height,
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                      (10),
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                      group,
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                      App::Prop_None,
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                      "The height of the view area of this clip");
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    ADD_PROPERTY_TYPE(Width,
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                      (10),
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                      group,
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                      App::Prop_None,
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                      "The width of the view area of this clip");
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    ADD_PROPERTY_TYPE(ShowFrame,
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                      (0),
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                      group,
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                      App::Prop_None,
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                      "Specifies if the clip frame appears on the page or not");
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    // The 'Visible' property is handled by the view provider exclusively. It has the 'Output' flag
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    // set to avoid to call the execute() method. The view provider touches the page object,
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    // instead.
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    App::PropertyType propType =
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        static_cast<App::PropertyType>(App::Prop_Hidden | App::Prop_Output);
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    ADD_PROPERTY_TYPE(Visible,
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                      (true),
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                      group,
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                      propType,
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                      "Control whether frame is visible in page object");
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}
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FeatureClip::~FeatureClip()
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{}
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/// get called by the container when a Property was changed
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void FeatureClip::onChanged(const App::Property* prop)
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{
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    App::DocumentObjectGroup::onChanged(prop);
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}
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App::DocumentObjectExecReturn* FeatureClip::execute(void)
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{
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    ostringstream svg;
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    // creating clip path
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    svg << "<clipPath id=\"" << Label.getValue() << "\">"
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        << "<rect x=\"" << X.getValue() << "\""
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        << " y=\"" << Y.getValue() << "\""
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        << " width=\"" << Width.getValue() << "\""
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        << " height=\"" << Height.getValue() << "\"/></clipPath>" << endl;
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    // show clip frame on the page if needed
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    if (ShowFrame.getValue()) {
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        svg << "<rect fill=\"None\" stroke=\"#ff0000\" stroke-width=\"1px\""
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            << " x=\"" << X.getValue() << "\""
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            << " y=\"" << Y.getValue() << "\""
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            << " width=\"" << Width.getValue() << "\""
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            << " height=\"" << Height.getValue() << "\"/>" << endl;
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    }
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    // create clipped group
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    svg << "<g clip-path=\"url(#" << Label.getValue() << ")\">" << endl;
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    // get through the children and collect all the views
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    const vector<App::DocumentObject*>& Grp = Group.getValues();
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    for (vector<App::DocumentObject*>::const_iterator It = Grp.begin(); It != Grp.end(); ++It) {
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        if ((*It)->isDerivedFrom<Drawing::FeatureView>()) {
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            Drawing::FeatureView* View = static_cast<Drawing::FeatureView*>(*It);
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            svg << View->ViewResult.getValue() << endl;
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        }
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    }
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    // closing clipped group
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    svg << "</g>" << endl;
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    ViewResult.setValue(svg.str().c_str());
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    return App::DocumentObject::StdReturn;
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}
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