visualization/qtquick_qml/measurements/main.cxx

Refer to Measurements Example

MeasurementsApplication.hxx

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
 
#ifndef __MeasurementsApplication_HeaderFile
#define __MeasurementsApplication_HeaderFile
 
#include "../baseviewer/BaseViewerApplication.hxx"
 
#include <cadex/Base_AngleUnit.hxx>
#include <cadex/Base_LengthUnit.hxx>
#include <cadex/ModelData_Shape.hxx>
#include <cadex/ModelPrs_Measurement.hxx>
#include <cadex/ModelPrs_MeasurementType.hxx>
#include <cadex/ModelPrs_SelectionChangesObserver.hxx>
 
namespace cadex {
class ModelPrs_Selection;
class ModelPrs_SceneNode;
}
 
class MeasurementsApplication;
 
class SelectionChangesObserver : public cadex::ModelPrs_SelectionChangesObserver
{
public:
    SelectionChangesObserver (MeasurementsApplication& theApplication);
 
    void SelectionChangedByScene (const cadex::ModelPrs_Selection& theCurrent,
                                  const cadex::ModelPrs_Selection& theSelected,
                                  const cadex::ModelPrs_Selection& theDeselected) override;
 
    void SelectionChangedByManager (const cadex::ModelPrs_Selection& /*theCurrent*/,
                                    const cadex::ModelPrs_Selection& /*theSelected*/,
                                    const cadex::ModelPrs_Selection& /*theDeselected*/) override { }
 
    void Clear();
 
private:
    MeasurementsApplication&               myApplication;
    std::vector<cadex::ModelData_Shape>    myShapes;
};
 
 
class MeasurementInfo : public QObject
{
    Q_OBJECT
 
    Q_PROPERTY (int numberOfSelectedShapes  MEMBER myNumberOfSelectedShapes WRITE setNumberOfSelectedShapes NOTIFY numberOfSelectedShapesChanged)
    Q_PROPERTY (QString measurementsResults MEMBER myMeasurementsResults    WRITE setMeasurementsResults    NOTIFY measurementsResultsChanged)
 
public:
    MeasurementInfo (MeasurementsApplication* theParent);
 
    void setNumberOfSelectedShapes (int theValue);
    void setMeasurementsResults (const QString& theValue);
 
signals:
    void numberOfSelectedShapesChanged();
    void measurementsResultsChanged();
 
private:
    int        myNumberOfSelectedShapes = 0;
    QString    myMeasurementsResults;
};
 
 
class MeasurementsApplication : public BaseViewerApplication
{
    Q_OBJECT
 
public:
    MeasurementsApplication();
 
    void OnSelectionChanged (const std::vector<cadex::ModelData_Shape>& theShapes);
 
public slots:
    void onInitialized();
    void onMeasurementModeChanged (const QVariant& theMode);
    void onMeasurementAngleUnitsChanged (const QVariant& theIndex);
    void onMeasurementLengthUnitsChanged (const QVariant& theIndex);
 
protected:
    void Clear() override;
 
    void UpdateResult();
 
protected:
    SelectionChangesObserver                    mySelectionObserver;
    cadex::ModelPrs_SceneNode                   myRootMeasurementsNode;
    cadex::ModelPrs_MeasurementType             myMeasurementMode;
    double                                      myMeasurementSize;
    cadex::Base_AngleUnit                       myAngleUnit;
    cadex::Base_LengthUnit                      myLengthUnit;
    std::vector<cadex::ModelPrs_Measurement>    myMeasurements;
    MeasurementInfo*                            myMeasurementInfo;
};
 
#endif // __MeasurementsApplication_HeaderFile

MeasurementsApplication.cxx

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
 
#include "MeasurementsApplication.hxx"
 
#include <cadex/ModelAlgo_BoundingBox.hxx>
#include <cadex/ModelAlgo_TransformationApplier.hxx>
#include <cadex/ModelData_Appearance.hxx>
#include <cadex/ModelData_Box.hxx>
#include <cadex/ModelData_Color.hxx>
#include <cadex/ModelData_Face.hxx>
#include <cadex/ModelData_Transformation.hxx>
#include <cadex/ModelData_Vertex.hxx>
#include <cadex/ModelPrsQtQuick_ViewPort.hxx>
#include <cadex/ModelPrs_Geometry.hxx>
#include <cadex/ModelPrs_Measurement.hxx>
#include <cadex/ModelPrs_MeasurementFactory.hxx>
#include <cadex/ModelPrs_SceneNode.hxx>
#include <cadex/ModelPrs_SceneNodeFactory.hxx>
#include <cadex/ModelPrs_Selection.hxx>
#include <cadex/ModelPrs_SelectionManager.hxx>
#include <cadex/ModelPrs_SelectionVisitor.hxx>
 
#include <QtCore/QDebug>
#include <QtQuick/QQuickWindow>
 
#include <deque>
#include <memory>
 
using namespace cadex;
 
namespace {
 
class SelectionVisitor : public ModelPrs_SelectionVisitor
{
public:
    void Visit (const ModelPrs_SceneNode& /*theNode*/) override
    {
 
    }
 
    void Visit (const ModelPrs_SceneNode& theNode, const ModelData_ShapeList& theShapes) override
    {
        auto aTrsf   = theNode.Transformation();
        auto aParent = theNode.Parent();
 
        while (aParent) {
            aTrsf = aParent.Transformation() * aTrsf;
            aParent = aParent.Parent();
        }
 
        myShape = theShapes.First();
        myShape = ModelAlgo_TransformationApplier::Transform (myShape, aTrsf);
    }
 
    ModelData_Shape myShape;
};
 
size_t NumberOfRequiredShapes (ModelPrs_MeasurementType theType)
{
    switch (theType) {
    case ModelPrs_MT_Radius:
    case ModelPrs_MT_Diameter:
        return 1;
    case ModelPrs_MT_Distance:
    case ModelPrs_MT_AngleBetweenPlanes:
        return 2;
    case ModelPrs_MT_AngleBetweenVertexes:
        return 3;
    default:
        return 0;
    }
}
 
int GetSelectionModeForMeasurement (ModelPrs_MeasurementType theType)
{
    switch (theType) {
    case ModelPrs_MT_Radius:
    case ModelPrs_MT_Diameter:
        return ModelPrs_SM_Face | ModelPrs_SM_Edge;
    case ModelPrs_MT_Distance:
        return ModelPrs_SM_Vertex | ModelPrs_SM_Edge | ModelPrs_SM_Face;
    case ModelPrs_MT_AngleBetweenPlanes:
        return ModelPrs_SM_Face;
    case ModelPrs_MT_AngleBetweenVertexes:
        return ModelPrs_SM_Vertex;
    default:
        return ModelPrs_SM_None;
    }
}
 
int GetSelectionFilterForMeasurement (ModelPrs_MeasurementType theType)
{
    switch (theType) {
    case ModelPrs_MT_Radius:
    case ModelPrs_MT_Diameter:
        return ModelPrs_SFT_CircleEdgeFilter | ModelPrs_SFT_RevolFaceFilter;
    case ModelPrs_MT_AngleBetweenPlanes:
        return ModelPrs_SFT_PlanarFaceFilter;
    case ModelPrs_MT_Distance:
    case ModelPrs_MT_AngleBetweenVertexes:
    default:
        return ModelPrs_SFT_None;
    }
}
 
std::vector<ModelPrs_Measurement> CreateMeasurements (const std::vector<cadex::ModelData_Shape>& theShapes,
                                                      ModelPrs_MeasurementType theType)
{
    std::vector<ModelPrs_Measurement> aMeasurements;
 
    ModelPrs_MeasurementFactory aFactory;
 
    switch (theType) {
    case ModelPrs_MT_Radius: {
        auto aMinorRadius = aFactory.CreateMinorRadius (theShapes[0]);
        auto aMajorRadius = aFactory.CreateMajorRadius (theShapes[0]);
 
        if (aMinorRadius) {
            aMeasurements.push_back (aMinorRadius);
        }
        if (aMajorRadius && aMinorRadius != aMajorRadius) {
            aMeasurements.push_back (aMajorRadius);
        }
        break;
    }
    case ModelPrs_MT_Diameter: {
        auto aMinorDiameter = aFactory.CreateMinorDiameter (theShapes[0]);
        auto aMajorDiameter = aFactory.CreateMajorDiameter (theShapes[0]);
 
        if (aMinorDiameter) {
            aMeasurements.push_back (aMinorDiameter);
        }
        if (aMajorDiameter && aMinorDiameter != aMajorDiameter) {
            aMeasurements.push_back (aMajorDiameter);
        }
        break;
    }
    case ModelPrs_MT_Distance: {
        auto aDistance = aFactory.CreateDistance (theShapes[0], theShapes[1]);
        if (aDistance) {
            aMeasurements.push_back (aDistance);
        }
        break;
    }
    case ModelPrs_MT_AngleBetweenPlanes: {
        Q_ASSERT (theShapes[0].Type() == ModelData_ST_Face && theShapes[1].Type() == ModelData_ST_Face);
        const auto& aFirstFace  = ModelData_Face::Cast (theShapes[0]);
        const auto& aSecondFace = ModelData_Face::Cast (theShapes[1]);
        auto anAngle = aFactory.CreateAngle (aFirstFace, aSecondFace);
        if (anAngle) {
            aMeasurements.push_back (anAngle);
        }
        break;
    }
    case ModelPrs_MT_AngleBetweenVertexes: {
        Q_ASSERT (theShapes[0].Type() == ModelData_ST_Vertex
                  && theShapes[1].Type() == ModelData_ST_Vertex
                  && theShapes[2].Type() == ModelData_ST_Vertex);
        const auto& aFirstVertex  = ModelData_Vertex::Cast (theShapes[0]);
        const auto& aSecondVertex = ModelData_Vertex::Cast (theShapes[1]);
        const auto& aThirdVertex  = ModelData_Vertex::Cast (theShapes[2]);
        auto anAngle = aFactory.CreateAngle (aFirstVertex, aSecondVertex, aThirdVertex);
        if (anAngle) {
            aMeasurements.push_back (anAngle);
        }
        break;
    }
    default:
        Q_ASSERT(false);
    }
    return aMeasurements;
}
 
} // end of unnamed namespace
 
 
SelectionChangesObserver::SelectionChangesObserver (MeasurementsApplication& theApplication)
    : myApplication (theApplication)
{
 
}
 
void SelectionChangesObserver::SelectionChangedByScene (const cadex::ModelPrs_Selection& theCurrent,
                                                        const cadex::ModelPrs_Selection& /*theSelected*/,
                                                        const cadex::ModelPrs_Selection& /*theDeselected*/)
{
    if (theCurrent.IsNull()) {
        Clear();
    } else {
        SelectionVisitor aVisitor;
        theCurrent.Accept (aVisitor);
        myShapes.push_back (aVisitor.myShape);
    }
 
    myApplication.OnSelectionChanged (myShapes);
}
 
void SelectionChangesObserver::Clear()
{
    myShapes.clear();
}
 
MeasurementInfo::MeasurementInfo (MeasurementsApplication* theParent)
    : QObject (theParent)
{
 
}
 
void MeasurementInfo::setNumberOfSelectedShapes (int theValue)
{
    if (myNumberOfSelectedShapes != theValue) {
        myNumberOfSelectedShapes = theValue;
        emit numberOfSelectedShapesChanged();
    }
}
void MeasurementInfo::setMeasurementsResults (const QString& theValue)
{
    if (myMeasurementsResults != theValue) {
        myMeasurementsResults = theValue;
        emit measurementsResultsChanged();
    }
}
 
 
MeasurementsApplication::MeasurementsApplication()
    : mySelectionObserver (*this),
      myMeasurementSize (-1.),
      myAngleUnit (Base_AU_Degree),
      myLengthUnit (Base_LU_Millimeters)
{
    myMeasurementInfo = new MeasurementInfo (this);
 
    myScene.SelectionManager().Register (mySelectionObserver);
 
    connect (this, &BaseViewerApplication::initialized, this, &MeasurementsApplication::onInitialized);
}
 
void MeasurementsApplication::onMeasurementModeChanged (const QVariant& theMode)
{
    myMeasurementMode = static_cast<ModelPrs_MeasurementType> (theMode.toInt());
 
    auto aSelectionMode = GetSelectionModeForMeasurement (myMeasurementMode);
    myRoot.SetSelectionMode (static_cast<ModelPrs_SelectionMode> (aSelectionMode));
 
    auto aSelectionFilter = GetSelectionFilterForMeasurement (myMeasurementMode);
    myScene.SelectionManager().SetFilter (static_cast<ModelPrs_SelectionFilterType> (aSelectionFilter));
 
    mySelectionObserver.Clear();
    myRoot.RemoveChildNode (myRootMeasurementsNode);
    myScene.Update();
}
 
void MeasurementsApplication::onMeasurementAngleUnitsChanged (const QVariant& theIndex)
{
    myAngleUnit = static_cast<Base_AngleUnit> (theIndex.toInt());
    UpdateResult();
    myRootMeasurementsNode.Invalidate();
    myScene.Update();
}
 
void MeasurementsApplication::onMeasurementLengthUnitsChanged (const QVariant& theIndex)
{
    myLengthUnit = static_cast<Base_LengthUnit> (theIndex.toInt());
    UpdateResult();
    myRootMeasurementsNode.Invalidate();
    myScene.Update();
}
 
namespace {
 
double ComputeMeasurementSize (const ModelData_Model& theModel)
{
    ModelData_Box aModelBoundingBox;
    ModelAlgo_BoundingBox::Compute (theModel, aModelBoundingBox);
    if (!aModelBoundingBox.IsInfinite()) {
        auto r = std::max ({ aModelBoundingBox.XRange(),
                             aModelBoundingBox.YRange(),
                             aModelBoundingBox.ZRange() });
        return r / 16.;
    } else {
        return 10.;
    }
}
 
} // end of unnamed namespace
 
void MeasurementsApplication::UpdateResult()
{
    QStringList aResult;
    for (auto& aMeasurement : myMeasurements) {
        aMeasurement.SetAngleUnit (myAngleUnit);
        aMeasurement.SetLengthUnit (myLengthUnit);
        aResult.push_back (QString::number (aMeasurement.Value(), 'g', 3));
    }
 
    myMeasurementInfo->setMeasurementsResults (aResult.join ("; "));
}
 
void MeasurementsApplication::OnSelectionChanged (const std::vector<cadex::ModelData_Shape>& theShapes)
{
    myMeasurementInfo->setNumberOfSelectedShapes (static_cast<int> (theShapes.size()));
 
    if (theShapes.empty() || theShapes.size() < NumberOfRequiredShapes (myMeasurementMode)) {
        return;
    }
 
    myMeasurements = CreateMeasurements (theShapes, myMeasurementMode);
    UpdateResult();
 
    if (myMeasurements.empty()) {
        myMeasurementInfo->setNumberOfSelectedShapes (0);
        mySelectionObserver.Clear();
        return;
    }
 
    if (myMeasurementSize < 0) {
        myMeasurementSize = ComputeMeasurementSize (myModel);
    }
 
    ModelPrs_SceneNode aTempRootMeasureNode;
    aTempRootMeasureNode.SetAppearance (ModelData_Color (1.f, 1.f, 1.f, 1.f));
 
    ModelPrs_SceneNodeFactory aFactory;
    for (auto& aMeasurement : myMeasurements) {
        aMeasurement.SetSize (myMeasurementSize);
        auto aSceneNode = aFactory.CreateNode (aMeasurement);
        aTempRootMeasureNode.AddChildNode (aSceneNode);
    }
 
    myScene.RemoveRoot (myRootMeasurementsNode);
    myScene.AddRoot (aTempRootMeasureNode);
    myScene.Update();
 
    myRootMeasurementsNode = aTempRootMeasureNode;
 
    mySelectionObserver.Clear();
}
 
void MeasurementsApplication::onInitialized()
{
    connect (myMainWindow, SIGNAL (measurementModeChanged (const QVariant&)),
             this,         SLOT (onMeasurementModeChanged (const QVariant&)));
 
    connect (myMainWindow, SIGNAL (measurementAngleUnitsChanged (const QVariant&)),
             this,         SLOT (onMeasurementAngleUnitsChanged (const QVariant&)));
 
    connect (myMainWindow, SIGNAL (measurementLengthUnitsChanged (const QVariant&)),
             this,         SLOT (onMeasurementLengthUnitsChanged (const QVariant&)));
 
    myMainWindow->setProperty ("model", QVariant::fromValue (myMeasurementInfo));
}
 
void MeasurementsApplication::Clear()
{
    myMeasurementSize = -1.;
    myMeasurementInfo->setNumberOfSelectedShapes (0);
    myMeasurementInfo->setMeasurementsResults("");
 
    myScene.RemoveRoot (myRootMeasurementsNode);
    BaseViewerApplication::Clear();
}

MeasurementsWindow.qml

import QtQuick 2.12
import QtQuick.Controls 2.3
import CadEx 1.2
 
BaseViewerWindow {
    signal measurementModeChanged (var index)
    signal measurementAngleUnitsChanged (var index)
    signal measurementLengthUnitsChanged (var index)
 
    property var model: null
 
    property int currentMeasurementMode: -1
    property int numberOfRequiredShapes: 0
 
    enum MeasurementType {
        Distance,
        Radius,
        Diameter,
        AngleBetweenPlanes,
        AngleBetweenVertexes
    }
 
    function isAngleMeasure()
    {
        switch (currentMeasurementMode) {
        case MeasurementsWindow.MeasurementType.Distance:
        case MeasurementsWindow.MeasurementType.Radius:
        case MeasurementsWindow.MeasurementType.Diameter:
            return false;
        case MeasurementsWindow.MeasurementType.AngleBetweenPlanes:
        case MeasurementsWindow.MeasurementType.AngleBetweenVertexes:
            return true;
        }
    }
 
    function getShapesTypesString()
    {
        switch (currentMeasurementMode) {
        case MeasurementsWindow.MeasurementType.Distance:
            return "vertex, edge or face";
        case MeasurementsWindow.MeasurementType.Radius:
        case MeasurementsWindow.MeasurementType.Diameter:
            return "edge or face";
        case MeasurementsWindow.MeasurementType.AngleBetweenPlanes:
            return "face";
        case MeasurementsWindow.MeasurementType.AngleBetweenVertexes:
            return "vertex";
        }
    }
 
    function getNumberOfRequiredShapes()
    {
        switch (currentMeasurementMode) {
        case MeasurementsWindow.MeasurementType.Distance:
            return 2;
        case MeasurementsWindow.MeasurementType.Radius:
        case MeasurementsWindow.MeasurementType.Diameter:
            return 1;
        case MeasurementsWindow.MeasurementType.AngleBetweenPlanes:
            return 2;
        case MeasurementsWindow.MeasurementType.AngleBetweenVertexes:
            return 3;
        }
    }
 
    Menu {
        id: measurementsTypeMenu
        title: qsTr ("&Measurements")
        property string currentMenuItemName: ""
        width: angleBetweenVertexesMenuItem.width
 
        ButtonGroup {
            id: buttonGroup
            buttons: measurementsTypeMenu.contentChildren
            onCheckedButtonChanged: {
                measurementsTypeMenu.currentMenuItemName = checkedButton.text;
                currentMeasurementMode = checkedButton.mode;
            }
        }
 
        MenuItem {
            id: distanceMenuItem
            text: qsTr ("Distance")
            checkable: true
            property var mode: MeasurementsWindow.MeasurementType.Distance
        }
 
        MenuItem {
            id: radiusMenuItem
            text: qsTr ("Radius")
            checkable: true
            property var mode: MeasurementsWindow.MeasurementType.Radius
        }
 
        MenuItem {
            id: diameterMenuItem
            text: qsTr ("Diameter")
            checkable: true
            property var mode: MeasurementsWindow.MeasurementType.Diameter;
        }
 
        MenuItem {
            id: angleBetweenPlanesMenuItem
            text: qsTr ("Angle between planes")
            checkable: true
            property var mode: MeasurementsWindow.MeasurementType.AngleBetweenPlanes
        }
 
        MenuItem {
            id: angleBetweenVertexesMenuItem
            text: qsTr ("Angle between vertexes")
            checkable: true
            property var mode: MeasurementsWindow.MeasurementType.AngleBetweenVertexes
        }
    }
 
    onMenuCompleted: {
        menuBarItem.addMenu (measurementsTypeMenu);
    }
 
    onCurrentMeasurementModeChanged: {
        numberOfRequiredShapes = getNumberOfRequiredShapes();
        model.numberOfSelectedShapes = 0;
        measurementModeChanged (currentMeasurementMode);
    }
 
    Rectangle {
        id: measurementBar
        visible: currentMeasurementMode != -1
        radius: 3
        width: 300
        height: column.implicitHeight
        anchors.margins: 10
        anchors.top: parent.top
        anchors.right: parent.right
        color: "#CCFFFFFF"
        border.color: "#55000000"
        readonly property string textColor: "#BB000000"
 
        Column {
            id: column
            padding: 20
            spacing: 20
            width: parent.width
 
            Text {
                width: parent.width - 40
                horizontalAlignment: Text.AlignHCenter
                font.pointSize: 14
                font.bold: true
                color: measurementBar.textColor
                text: measurementsTypeMenu.currentMenuItemName
            }
 
            Text {
                visible: numberOfRequiredShapes != 0 && model.numberOfSelectedShapes !== numberOfRequiredShapes
                text: !model ? " " : !model.numberOfSelectedShapes ? qsTr ("Select ") + getShapesTypesString()
                                                                   : qsTr ("Selected ") + model.numberOfSelectedShapes +
                                                                     qsTr (" of ") + numberOfRequiredShapes
                font.pointSize: 13
                font.italic: true
                color: measurementBar.textColor
            }
 
            Text {
                id: resultText
                visible: !model ? "" : !model.numberOfSelectedShapes !== 0
                                        && model.numberOfSelectedShapes === numberOfRequiredShapes
                                        && model.measurementsResults !== ""
                property string units: isAngleMeasure() ? "" : lengthUnitComboBox.currentText
                text: !model ? "" : qsTr ("Result: ") + model.measurementsResults + units
                font.pointSize: 13
                color: measurementBar.textColor
            }
 
            Row {
                visible: resultText.visible
 
                Text {
                    text: qsTr ("Units: ")
                    font.pointSize: 13
                    color: measurementBar.textColor
                    anchors.verticalCenter: parent.verticalCenter
                }
 
                ComboBox {
                    id: lengthUnitComboBox
                    visible: resultText.visible && !isAngleMeasure()
                    model: ["mm", "cm", "m", "in", "ft", "yd"]
                    onCurrentIndexChanged: measurementLengthUnitsChanged (currentIndex);
                }
 
                ComboBox {
                    currentIndex: 1
                    visible: resultText.visible && isAngleMeasure()
                    model: ["rad", "deg"]
                    onCurrentIndexChanged: measurementAngleUnitsChanged (currentIndex);
                }
            }
        }
    }
}

main.cxx

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
 
#include "MeasurementsApplication.hxx"
#include <cadex/LicenseManager_Activate.h>
#include <QtCore/QUrl>
#include <QtWidgets/QApplication>
 
#include "../../../cadex_license.cxx"
 
using namespace cadex;
 
int main (int argc, char *argv[])
{
    auto aKey = LicenseKey::Value();
 
    // Activate the license (aKey must be defined in cadex_license.cxx)
    if (!CADExLicense_Activate (aKey)) {
        qCritical ("Failed to activate CAD Exchanger license.");
        return 1;
    }
 
    // Must set dpi scaling before creating an application.
    QCoreApplication::setAttribute (Qt::AA_EnableHighDpiScaling);
 
    // Create QApplication because Qt.labs.platform module requires Qt Widgets library.
    // For more information see https://doc.qt.io/qt-5.10/qml-qt-labs-platform-filedialog.html
    QApplication app (argc, argv);
 
    MeasurementsApplication anApp;
    if (anApp.Initialize (QUrl ("qrc:/qml/MeasurementsWindow.qml"), "viewPort")) {
        return app.exec();
    }
 
    return 0;
}