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Coding - move out Window sample from main.cpp to deducated file
1 parent 6a75084 commit eb15acf

9 files changed

Lines changed: 407 additions & 320 deletions

‎occt-qopenglwidget/CMakeLists.txt‎

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@@ -86,6 +86,8 @@ add_executable (${PROJECT_NAME}
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../occt-qt-tools/OcctGlTools.h
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../occt-qt-tools/OcctGlTools.cpp
8888
main.cpp
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OcctQMainWindowSample.h
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OcctQMainWindowSample.cpp
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OcctQOpenGLWidgetViewer.h
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OcctQOpenGLWidgetViewer.cpp
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)

‎occt-qopenglwidget/OcctQMainWindowSample.cpp‎

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// Copyright (c) 2025 Kirill Gavrilov
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#include "OcctQMainWindowSample.h"
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#include "OcctQOpenGLWidgetViewer.h"
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#include <Standard_Version.hxx>
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#include <Standard_WarningsDisable.hxx>
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#include <QAction>
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#include <QLabel>
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#include <QMenuBar>
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#include <QMessageBox>
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#include <QVBoxLayout>
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#include <QPushButton>
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#include <QSlider>
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#include <Standard_WarningsRestore.hxx>
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// ================================================================
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// Function : OcctQMainWindowSample
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// ================================================================
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OcctQMainWindowSample::OcctQMainWindowSample()
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{
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// 3D Viewer widget as a central widget
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myViewer = new OcctQOpenGLWidgetViewer();
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setCentralWidget(myViewer);
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// menu bar
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createMenuBar();
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// some controls on top of 3D Viewer
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createLayoutOverViewer();
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}
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// ================================================================
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// Function : createMenuBar
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// ================================================================
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void OcctQMainWindowSample::createMenuBar()
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{
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QMenuBar* aMenuBar = new QMenuBar();
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QMenu* aMenuWindow = aMenuBar->addMenu("&File");
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#if (OCC_VERSION_HEX >= 0x070700)
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{
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QAction* anActionSplit = new QAction(aMenuWindow);
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anActionSplit->setText("Split Views");
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aMenuWindow->addAction(anActionSplit);
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connect(anActionSplit, &QAction::triggered, [this]() { splitSubviews(); });
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}
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#endif
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{
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QAction* anActionQuit = new QAction(aMenuWindow);
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anActionQuit->setText("Quit");
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aMenuWindow->addAction(anActionQuit);
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connect(anActionQuit, &QAction::triggered, [this]() { close(); });
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}
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setMenuBar(aMenuBar);
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}
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// ================================================================
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// Function : createLayoutOverViewer
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// ================================================================
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void OcctQMainWindowSample::createLayoutOverViewer()
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{
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QVBoxLayout* aLayout = new QVBoxLayout(myViewer);
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aLayout->setDirection(QBoxLayout::BottomToTop);
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aLayout->setAlignment(Qt::AlignBottom);
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{
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// button displaying message window with OpenGL info
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QPushButton* aQuitBtn = new QPushButton("About");
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aLayout->addWidget(aQuitBtn);
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connect(aQuitBtn, &QPushButton::clicked, [this]() {
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QMessageBox::information(0,
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"About Sample",
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QString() + "OCCT 3D Viewer sample embedded into Qt Widgets.\n\n"
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+ "Open CASCADE Technology v." OCC_VERSION_STRING_EXT "\n"
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+ "Qt v." QT_VERSION_STR "\n\n" + "OpenGL info:\n" + myViewer->getGlInfo());
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});
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}
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{
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// slider changing viewer background color
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// the widgets on top of OCCT 3D Viewer (implemented as QOpenGLWidget) might have transparent background
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QWidget* aSliderBox = new QWidget();
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aSliderBox->setStyleSheet("QWidget { background-color: rgba(0, 0, 0, 0); }");
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QHBoxLayout* aSliderLayout = new QHBoxLayout(aSliderBox);
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{
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QLabel* aSliderLabel = new QLabel("Background");
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aSliderLabel->setStyleSheet("QLabel { background-color: rgba(0, 0, 0, 0); color: white; }");
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aSliderLabel->setGeometry(50, 50, 50, 50);
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aSliderLabel->adjustSize();
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aSliderLayout->addWidget(aSliderLabel);
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}
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{
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QSlider* aSlider = new QSlider(Qt::Horizontal);
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aSlider->setRange(0, 255);
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aSlider->setSingleStep(1);
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aSlider->setPageStep(15);
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aSlider->setTickInterval(15);
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aSlider->setTickPosition(QSlider::TicksRight);
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aSlider->setValue(0);
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aSliderLayout->addWidget(aSlider);
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connect(aSlider, &QSlider::valueChanged, [this](int theValue) {
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const float aVal = theValue / 255.0f;
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const Quantity_Color aColor(aVal, aVal, aVal, Quantity_TOC_sRGB);
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#if (OCC_VERSION_HEX >= 0x070700)
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for (const Handle(V3d_View)& aSubviewIter : myViewer->View()->Subviews())
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{
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aSubviewIter->SetBgGradientColors(aColor, Quantity_NOC_BLACK, Aspect_GradientFillMethod_Elliptical);
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aSubviewIter->Invalidate();
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}
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#endif
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// myViewer->View()->SetBackgroundColor(aColor);
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myViewer->View()->SetBgGradientColors(aColor, Quantity_NOC_BLACK, Aspect_GradientFillMethod_Elliptical);
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myViewer->View()->Invalidate();
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myViewer->update();
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});
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}
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aLayout->addWidget(aSliderBox);
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}
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}
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// ================================================================
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// Function : splitSubviews
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// ================================================================
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void OcctQMainWindowSample::splitSubviews()
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{
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#if (OCC_VERSION_HEX >= 0x070700)
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if (!myViewer->View()->Subviews().IsEmpty())
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{
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// remove subviews
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myViewer->View()->View()->SetSubviewComposer(false);
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NCollection_Sequence<Handle(V3d_View)> aSubviews = myViewer->View()->Subviews();
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for (const Handle(V3d_View)& aSubviewIter : aSubviews)
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aSubviewIter->Remove();
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myViewer->OnSubviewChanged(myViewer->Context(), nullptr, myViewer->View());
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}
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else
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{
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// create two subviews splitting window horizontally
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myViewer->View()->View()->SetSubviewComposer(true);
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Handle(V3d_View) aSubView1 = new V3d_View(myViewer->Viewer());
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aSubView1->SetImmediateUpdate(false);
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aSubView1->SetWindow(myViewer->View(),
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Graphic3d_Vec2d(0.5, 1.0),
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Aspect_TOTP_LEFT_UPPER,
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Graphic3d_Vec2d(0.0, 0.0));
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Handle(V3d_View) aSubView2 = new V3d_View(myViewer->Viewer());
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aSubView2->SetImmediateUpdate(false);
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aSubView2->SetWindow(myViewer->View(),
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Graphic3d_Vec2d(0.5, 1.0),
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Aspect_TOTP_LEFT_UPPER,
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Graphic3d_Vec2d(0.5, 0.0));
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myViewer->OnSubviewChanged(myViewer->Context(), nullptr, aSubView1);
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}
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myViewer->View()->Invalidate();
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myViewer->update();
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#endif
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}

‎occt-qopenglwidget/OcctQMainWindowSample.h‎

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// Copyright (c) 2025 Kirill Gavrilov
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#ifndef _OcctQMainWindowSample_HeaderFile
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#define _OcctQMainWindowSample_HeaderFile
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6+
#include <Standard_WarningsDisable.hxx>
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#include <QMainWindow>
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#include <Standard_WarningsRestore.hxx>
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class OcctQOpenGLWidgetViewer;
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//! Main application window.
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class OcctQMainWindowSample : public QMainWindow
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{
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public:
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//! Window constructor.
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OcctQMainWindowSample();
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private:
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//! Define menu bar with Quit item.
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void createMenuBar();
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23+
//! Define controls over 3D viewer.
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void createLayoutOverViewer();
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//! Advanced method splitting 3D Viewer into sub-views.
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void splitSubviews();
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private:
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OcctQOpenGLWidgetViewer* myViewer = nullptr;
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};
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#endif // _OcctQMainWindowSample_HeaderFile

‎occt-qopenglwidget/main.cpp‎

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Original file line numberDiff line numberDiff line change
@@ -1,171 +1,15 @@
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// Copyright (c) 2025 Kirill Gavrilov
22

3-
#include "OcctQOpenGLWidgetViewer.h"
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#include "OcctQMainWindowSample.h"
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55
#include "../occt-qt-tools/OcctQtTools.h"
66

77
#include <Standard_WarningsDisable.hxx>
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#include <QApplication>
9-
#include <QSurfaceFormat>
10-
11-
#include <QAction>
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#include <QLabel>
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#include <QMainWindow>
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#include <QMenuBar>
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#include <QMessageBox>
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#include <QVBoxLayout>
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#include <QPushButton>
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#include <QSlider>
199
#include <Standard_WarningsRestore.hxx>
2010

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#include <Standard_Version.hxx>
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//! Main application window.
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class MyMainWindow : public QMainWindow
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{
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OcctQOpenGLWidgetViewer* myViewer = nullptr;
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public:
29-
//! Window constructor.
30-
MyMainWindow()
31-
{
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// 3D Viewer widget as a central widget
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myViewer = new OcctQOpenGLWidgetViewer();
34-
setCentralWidget(myViewer);
35-
36-
// menu bar
37-
createMenuBar();
38-
39-
// some controls on top of 3D Viewer
40-
createLayoutOverViewer();
41-
}
42-
43-
private:
44-
//! Define menu bar with Quit item.
45-
void createMenuBar()
46-
{
47-
QMenuBar* aMenuBar = new QMenuBar();
48-
QMenu* aMenuWindow = aMenuBar->addMenu("&File");
49-
#if (OCC_VERSION_HEX >= 0x070700)
50-
{
51-
QAction* anActionSplit = new QAction(aMenuWindow);
52-
anActionSplit->setText("Split Views");
53-
aMenuWindow->addAction(anActionSplit);
54-
connect(anActionSplit, &QAction::triggered, [this]() { splitSubviews(); });
55-
}
56-
#endif
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{
58-
QAction* anActionQuit = new QAction(aMenuWindow);
59-
anActionQuit->setText("Quit");
60-
aMenuWindow->addAction(anActionQuit);
61-
connect(anActionQuit, &QAction::triggered, [this]() { close(); });
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}
63-
setMenuBar(aMenuBar);
64-
}
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66-
//! Define controls over 3D viewer.
67-
void createLayoutOverViewer()
68-
{
69-
QVBoxLayout* aLayout = new QVBoxLayout(myViewer);
70-
aLayout->setDirection(QBoxLayout::BottomToTop);
71-
aLayout->setAlignment(Qt::AlignBottom);
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{
73-
// button displaying message window with OpenGL info
74-
QPushButton* aQuitBtn = new QPushButton("About");
75-
aLayout->addWidget(aQuitBtn);
76-
connect(aQuitBtn, &QPushButton::clicked, [this]() {
77-
QMessageBox::information(0,
78-
"About Sample",
79-
QString() + "OCCT 3D Viewer sample embedded into Qt Widgets.\n\n"
80-
+ "Open CASCADE Technology v." OCC_VERSION_STRING_EXT "\n"
81-
+ "Qt v." QT_VERSION_STR "\n\n" + "OpenGL info:\n" + myViewer->getGlInfo());
82-
});
83-
}
84-
{
85-
// slider changing viewer background color
86-
87-
// the widgets on top of OCCT 3D Viewer (implemented as QOpenGLWidget) might have transparent background
88-
QWidget* aSliderBox = new QWidget();
89-
aSliderBox->setStyleSheet("QWidget { background-color: rgba(0, 0, 0, 0); }");
90-
91-
QHBoxLayout* aSliderLayout = new QHBoxLayout(aSliderBox);
92-
{
93-
QLabel* aSliderLabel = new QLabel("Background");
94-
aSliderLabel->setStyleSheet("QLabel { background-color: rgba(0, 0, 0, 0); color: white; }");
95-
aSliderLabel->setGeometry(50, 50, 50, 50);
96-
aSliderLabel->adjustSize();
97-
aSliderLayout->addWidget(aSliderLabel);
98-
}
99-
{
100-
QSlider* aSlider = new QSlider(Qt::Horizontal);
101-
aSlider->setRange(0, 255);
102-
aSlider->setSingleStep(1);
103-
aSlider->setPageStep(15);
104-
aSlider->setTickInterval(15);
105-
aSlider->setTickPosition(QSlider::TicksRight);
106-
aSlider->setValue(0);
107-
aSliderLayout->addWidget(aSlider);
108-
connect(aSlider, &QSlider::valueChanged, [this](int theValue) {
109-
const float aVal = theValue / 255.0f;
110-
const Quantity_Color aColor(aVal, aVal, aVal, Quantity_TOC_sRGB);
111-
#if (OCC_VERSION_HEX >= 0x070700)
112-
for (const Handle(V3d_View)& aSubviewIter : myViewer->View()->Subviews())
113-
{
114-
aSubviewIter->SetBgGradientColors(aColor, Quantity_NOC_BLACK, Aspect_GradientFillMethod_Elliptical);
115-
aSubviewIter->Invalidate();
116-
}
117-
#endif
118-
// myViewer->View()->SetBackgroundColor(aColor);
119-
myViewer->View()->SetBgGradientColors(aColor, Quantity_NOC_BLACK, Aspect_GradientFillMethod_Elliptical);
120-
myViewer->View()->Invalidate();
121-
myViewer->update();
122-
});
123-
}
124-
aLayout->addWidget(aSliderBox);
125-
}
126-
}
127-
128-
#if (OCC_VERSION_HEX >= 0x070700)
129-
//! Advanced method splitting 3D Viewer into sub-views.
130-
void splitSubviews()
131-
{
132-
if (!myViewer->View()->Subviews().IsEmpty())
133-
{
134-
// remove subviews
135-
myViewer->View()->View()->SetSubviewComposer(false);
136-
NCollection_Sequence<Handle(V3d_View)> aSubviews = myViewer->View()->Subviews();
137-
for (const Handle(V3d_View)& aSubviewIter : aSubviews)
138-
aSubviewIter->Remove();
139-
140-
myViewer->OnSubviewChanged(myViewer->Context(), nullptr, myViewer->View());
141-
}
142-
else
143-
{
144-
// create two subviews splitting window horizontally
145-
myViewer->View()->View()->SetSubviewComposer(true);
146-
147-
Handle(V3d_View) aSubView1 = new V3d_View(myViewer->Viewer());
148-
aSubView1->SetImmediateUpdate(false);
149-
aSubView1->SetWindow(myViewer->View(),
150-
Graphic3d_Vec2d(0.5, 1.0),
151-
Aspect_TOTP_LEFT_UPPER,
152-
Graphic3d_Vec2d(0.0, 0.0));
153-
154-
Handle(V3d_View) aSubView2 = new V3d_View(myViewer->Viewer());
155-
aSubView2->SetImmediateUpdate(false);
156-
aSubView2->SetWindow(myViewer->View(),
157-
Graphic3d_Vec2d(0.5, 1.0),
158-
Aspect_TOTP_LEFT_UPPER,
159-
Graphic3d_Vec2d(0.5, 0.0));
160-
161-
myViewer->OnSubviewChanged(myViewer->Context(), nullptr, aSubView1);
162-
}
163-
myViewer->View()->Invalidate();
164-
myViewer->update();
165-
}
166-
#endif
167-
};
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16913
int main(int theNbArgs, char** theArgVec)
17014
{
17115
// before creating QApplication: define platform plugin to load (e.g. xcb on Linux)
@@ -177,7 +21,7 @@ int main(int theNbArgs, char** theArgVec)
17721
QCoreApplication::setOrganizationName("OpenCASCADE");
17822
QCoreApplication::setApplicationVersion(OCC_VERSION_STRING_EXT);
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180-
MyMainWindow aMainWindow;
24+
OcctQMainWindowSample aMainWindow;
18125
aMainWindow.resize(aMainWindow.sizeHint());
18226
aMainWindow.show();
18327
return aQApp.exec();

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