GLuint buildProgramFiles(const char *vert_shader_file, const char *frag_shader_file)
{
/* compile the vertex shader */
GLuint vert_shader = compileShaderFile(GL_VERTEX_SHADER, vert_shader_file);
if (vert_shader == 0)
{
return 0;
}
/* compile the fragment shader */
GLuint frag_shader = compileShaderFile(GL_FRAGMENT_SHADER, frag_shader_file);
if (frag_shader == 0)
{
glDeleteShader(vert_shader);
return 0;
}
/* link the shaders together */
GLuint program = linkProgram(2, vert_shader, frag_shader);
/* delete shader objects, so that when user destroys the program object,
the shaders will be freed too */
glDeleteShader(frag_shader);
glDeleteShader(vert_shader);
return program;
}
PointViewerMainWindow::PointViewerMainWindow(const QGLFormat& format)
: m_progressBar(0),
m_pointView(0),
m_shaderEditor(0),
m_helpDialog(0),
m_logTextView(0),
m_maxPointCount(200*1000*1000), // 200 million
m_geometries(0),
m_ipcServer(0),
m_hookManager(0)
{
#ifndef _WIN32
setWindowIcon(QIcon(":resource/icons/hicolor/256x256/apps/displaz.png"));
#else
// On windows, application icon is set via windows resource file
#endif
setWindowTitle("Displaz");
setAcceptDrops(true);
m_helpDialog = new HelpDialog(this);
m_geometries = new GeometryCollection(this);
connect(m_geometries, SIGNAL(layoutChanged()), this, SLOT(updateTitle()));
connect(m_geometries, SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(updateTitle()));
connect(m_geometries, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(updateTitle()));
connect(m_geometries, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(updateTitle()));
//--------------------------------------------------
// Set up file loader in a separate thread
//
// Some subtleties regarding qt thread usage are discussed here:
// http://mayaposch.wordpress.com/2011/11/01/how-to-really-truly-use-qthreads-the-full-explanation
//
// Main point: each QObject has a thread affinity which determines which
// thread its slots will execute on, when called via a connected signal.
QThread* loaderThread = new QThread();
m_fileLoader = new FileLoader(m_maxPointCount);
m_fileLoader->moveToThread(loaderThread);
connect(loaderThread, SIGNAL(finished()), m_fileLoader, SLOT(deleteLater()));
connect(loaderThread, SIGNAL(finished()), loaderThread, SLOT(deleteLater()));
//connect(m_fileLoader, SIGNAL(finished()), this, SIGNAL(fileLoadFinished()));
connect(m_fileLoader, SIGNAL(geometryLoaded(std::shared_ptr<Geometry>, bool, bool)),
m_geometries, SLOT(addGeometry(std::shared_ptr<Geometry>, bool, bool)));
connect(m_fileLoader, SIGNAL(geometryMutatorLoaded(std::shared_ptr<GeometryMutator>)),
m_geometries, SLOT(mutateGeometry(std::shared_ptr<GeometryMutator>)));
loaderThread->start();
//--------------------------------------------------
// Menus
menuBar()->setNativeMenuBar(false); // OS X doesn't activate the native menu bar under Qt5
// File menu
QMenu* fileMenu = menuBar()->addMenu(tr("&File"));
QAction* openAct = fileMenu->addAction(tr("&Open"));
openAct->setToolTip(tr("Open a data set"));
openAct->setShortcuts(QKeySequence::Open);
connect(openAct, SIGNAL(triggered()), this, SLOT(openFiles()));
QAction* addAct = fileMenu->addAction(tr("&Add"));
addAct->setToolTip(tr("Add a data set"));
connect(addAct, SIGNAL(triggered()), this, SLOT(addFiles()));
QAction* reloadAct = fileMenu->addAction(tr("&Reload"));
reloadAct->setStatusTip(tr("Reload point files from disk"));
reloadAct->setShortcut(Qt::Key_F5);
connect(reloadAct, SIGNAL(triggered()), this, SLOT(reloadFiles()));
fileMenu->addSeparator();
QAction* screenShotAct = fileMenu->addAction(tr("Scree&nshot"));
screenShotAct->setStatusTip(tr("Save screen shot of 3D window"));
screenShotAct->setShortcut(Qt::Key_F9);
connect(screenShotAct, SIGNAL(triggered()), this, SLOT(screenShot()));
fileMenu->addSeparator();
QAction* quitAct = fileMenu->addAction(tr("&Quit"));
quitAct->setStatusTip(tr("Exit the application"));
quitAct->setShortcuts(QKeySequence::Quit);
connect(quitAct, SIGNAL(triggered()), this, SLOT(close()));
// View menu
QMenu* viewMenu = menuBar()->addMenu(tr("&View"));
QAction* trackballMode = viewMenu->addAction(tr("Use &Trackball camera"));
trackballMode->setCheckable(true);
trackballMode->setChecked(false);
// Background sub-menu
QMenu* backMenu = viewMenu->addMenu(tr("Set &Background"));
QSignalMapper* mapper = new QSignalMapper(this);
// Selectable backgrounds (svg_names from SVG standard - see QColor docs)
const char* backgroundNames[] = {/* "Display Name", "svg_name", */
"Default", "#3C3232",
"Black", "black",
"Dark Grey", "dimgrey",
"Slate Grey", "#858C93",
"Light Grey", "lightgrey",
"White", "white" };
for(size_t i = 0; i < sizeof(backgroundNames)/sizeof(const char*); i+=2)
{
QAction* backgroundAct = backMenu->addAction(tr(backgroundNames[i]));
QPixmap pixmap(50,50);
QString colName = backgroundNames[i+1];
pixmap.fill(QColor(colName));
QIcon icon(pixmap);
backgroundAct->setIcon(icon);
mapper->setMapping(backgroundAct, colName);
connect(backgroundAct, SIGNAL(triggered()), mapper, SLOT(map()));
}
connect(mapper, SIGNAL(mapped(QString)),
this, SLOT(setBackground(QString)));
backMenu->addSeparator();
QAction* backgroundCustom = backMenu->addAction(tr("&Custom"));
connect(backgroundCustom, SIGNAL(triggered()),
this, SLOT(chooseBackground()));
// Check boxes for drawing various scene elements by category
viewMenu->addSeparator();
QAction* drawBoundingBoxes = viewMenu->addAction(tr("Draw Bounding bo&xes"));
drawBoundingBoxes->setCheckable(true);
drawBoundingBoxes->setChecked(false);
QAction* drawCursor = viewMenu->addAction(tr("Draw 3D &Cursor"));
drawCursor->setCheckable(true);
drawCursor->setChecked(true);
QAction* drawAxes = viewMenu->addAction(tr("Draw &Axes"));
drawAxes->setCheckable(true);
drawAxes->setChecked(true);
QAction* drawGrid = viewMenu->addAction(tr("Draw &Grid"));
drawGrid->setCheckable(true);
drawGrid->setChecked(false);
QAction* drawAnnotations = viewMenu->addAction(tr("Draw A&nnotations"));
drawAnnotations->setCheckable(true);
drawAnnotations->setChecked(true);
// Shader menu
QMenu* shaderMenu = menuBar()->addMenu(tr("&Shader"));
QAction* openShaderAct = shaderMenu->addAction(tr("&Open"));
openShaderAct->setToolTip(tr("Open a shader file"));
connect(openShaderAct, SIGNAL(triggered()), this, SLOT(openShaderFile()));
QAction* editShaderAct = shaderMenu->addAction(tr("&Edit"));
editShaderAct->setToolTip(tr("Open shader editor window"));
QAction* saveShaderAct = shaderMenu->addAction(tr("&Save"));
saveShaderAct->setToolTip(tr("Save current shader file"));
connect(saveShaderAct, SIGNAL(triggered()), this, SLOT(saveShaderFile()));
shaderMenu->addSeparator();
// Help menu
QMenu* helpMenu = menuBar()->addMenu(tr("&Help"));
QAction* helpAct = helpMenu->addAction(tr("User &Guide"));
connect(helpAct, SIGNAL(triggered()), this, SLOT(helpDialog()));
helpMenu->addSeparator();
QAction* aboutAct = helpMenu->addAction(tr("&About"));
connect(aboutAct, SIGNAL(triggered()), this, SLOT(aboutDialog()));
//--------------------------------------------------
// Point viewer
m_pointView = new View3D(m_geometries, format, this);
setCentralWidget(m_pointView);
connect(drawBoundingBoxes, SIGNAL(triggered()),
m_pointView, SLOT(toggleDrawBoundingBoxes()));
connect(drawCursor, SIGNAL(triggered()),
m_pointView, SLOT(toggleDrawCursor()));
connect(drawAxes, SIGNAL(triggered()),
m_pointView, SLOT(toggleDrawAxes()));
connect(drawGrid, SIGNAL(triggered()),
m_pointView, SLOT(toggleDrawGrid()));
connect(drawAnnotations, SIGNAL(triggered()),
m_pointView, SLOT(toggleDrawAnnotations()));
connect(trackballMode, SIGNAL(triggered()),
m_pointView, SLOT(toggleCameraMode()));
connect(m_geometries, SIGNAL(rowsInserted(QModelIndex,int,int)),
this, SLOT(geometryRowsInserted(QModelIndex,int,int)));
//--------------------------------------------------
// Docked widgets
// Shader parameters UI
QDockWidget* shaderParamsDock = new QDockWidget(tr("Shader Parameters"), this);
shaderParamsDock->setFeatures(QDockWidget::DockWidgetMovable |
QDockWidget::DockWidgetClosable);
QWidget* shaderParamsUI = new QWidget(shaderParamsDock);
shaderParamsDock->setWidget(shaderParamsUI);
m_pointView->setShaderParamsUIWidget(shaderParamsUI);
// Shader editor UI
QDockWidget* shaderEditorDock = new QDockWidget(tr("Shader Editor"), this);
shaderEditorDock->setFeatures(QDockWidget::DockWidgetMovable |
QDockWidget::DockWidgetClosable |
QDockWidget::DockWidgetFloatable);
QWidget* shaderEditorUI = new QWidget(shaderEditorDock);
m_shaderEditor = new ShaderEditor(shaderEditorUI);
QGridLayout* shaderEditorLayout = new QGridLayout(shaderEditorUI);
shaderEditorLayout->setContentsMargins(2,2,2,2);
shaderEditorLayout->addWidget(m_shaderEditor, 0, 0, 1, 1);
connect(editShaderAct, SIGNAL(triggered()), shaderEditorDock, SLOT(show()));
shaderEditorDock->setWidget(shaderEditorUI);
shaderMenu->addAction(m_shaderEditor->compileAction());
connect(m_shaderEditor->compileAction(), SIGNAL(triggered()),
this, SLOT(compileShaderFile()));
// TODO: check if this is needed - test shader update functionality
//connect(m_shaderEditor, SIGNAL(sendShader(QString)),
// &m_pointView->shaderProgram(), SLOT(setShader(QString)));
// Log viewer UI
QDockWidget* logDock = new QDockWidget(tr("Log"), this);
logDock->setFeatures(QDockWidget::DockWidgetMovable |
QDockWidget::DockWidgetClosable);
QWidget* logUI = new QWidget(logDock);
m_logTextView = new LogViewer(logUI);
m_logTextView->setReadOnly(true);
m_logTextView->setTextInteractionFlags(Qt::TextSelectableByKeyboard | Qt::TextSelectableByMouse);
m_logTextView->connectLogger(&g_logger); // connect to global logger
m_progressBar = new QProgressBar(logUI);
m_progressBar->setRange(0,100);
m_progressBar->setValue(0);
m_progressBar->hide();
connect(m_fileLoader, SIGNAL(loadStepStarted(QString)),
this, SLOT(setProgressBarText(QString)));
connect(m_fileLoader, SIGNAL(loadProgress(int)),
m_progressBar, SLOT(setValue(int)));
connect(m_fileLoader, SIGNAL(resetProgress()),
m_progressBar, SLOT(hide()));
QVBoxLayout* logUILayout = new QVBoxLayout(logUI);
//logUILayout->setContentsMargins(2,2,2,2);
logUILayout->addWidget(m_logTextView);
logUILayout->addWidget(m_progressBar);
//m_logTextView->setLineWrapMode(QPlainTextEdit::NoWrap);
logDock->setWidget(logUI);
// Data set list UI
QDockWidget* dataSetDock = new QDockWidget(tr("Data Sets"), this);
dataSetDock->setFeatures(QDockWidget::DockWidgetMovable |
QDockWidget::DockWidgetClosable |
QDockWidget::DockWidgetFloatable);
DataSetUI* dataSetUI = new DataSetUI(this);
dataSetDock->setWidget(dataSetUI);
QAbstractItemView* dataSetOverview = dataSetUI->view();
dataSetOverview->setModel(m_geometries);
connect(dataSetOverview, SIGNAL(doubleClicked(const QModelIndex&)),
m_pointView, SLOT(centerOnGeometry(const QModelIndex&)));
m_pointView->setSelectionModel(dataSetOverview->selectionModel());
// Set up docked widgets
addDockWidget(Qt::RightDockWidgetArea, shaderParamsDock);
addDockWidget(Qt::LeftDockWidgetArea, shaderEditorDock);
addDockWidget(Qt::RightDockWidgetArea, logDock);
addDockWidget(Qt::RightDockWidgetArea, dataSetDock);
tabifyDockWidget(logDock, dataSetDock);
logDock->raise();
shaderEditorDock->setVisible(false);
// Add dock widget toggles to view menu
viewMenu->addSeparator();
viewMenu->addAction(shaderParamsDock->toggleViewAction());
viewMenu->addAction(logDock->toggleViewAction());
viewMenu->addAction(dataSetDock->toggleViewAction());
// Create custom hook events from CLI at runtime
m_hookManager = new HookManager(this);
}