Mercurial > octave-nkf
view gui/src/Plot2dWidget.cpp @ 13470:f7356554594c
Plot can be moved around with mouse and zoomed with scrollwheel.
author | Jacob Dawid <jacob.dawid@googlemail.com> |
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date | Wed, 20 Apr 2011 09:59:04 +0200 |
parents | a20f8763105f |
children | 4baf5e6bba13 |
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#include "Plot2dWidget.h" #include <QVBoxLayout> #include <QHBoxLayout> #include <QPushButton> #include <QTimer> #include <math.h> Plot2dView::Plot2dView(QWidget *parent) : QGLWidget(parent) { construct(); } void Plot2dView::construct() { QTimer *animationTimer = new QTimer(this); animationTimer->setInterval(20); animationTimer->start(); m_zoom = 1.0; m_scrollX = 0.0; m_scrollY = 0.0; m_leftMouseButtonDown = false; connect(animationTimer, SIGNAL(timeout()), this, SLOT(animate())); } void Plot2dView::initializeGL() { glClearColor(0.0,0.0, 0.0, 0.0); glEnable(GL_POINT_SMOOTH); // glEnable(GL_LINE_SMOOTH); glEnable(GL_POLYGON_SMOOTH); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA); } void Plot2dView::paintGL() { glMatrixMode(GL_MODELVIEW_MATRIX); glLoadIdentity(); glScaled(m_zoom, m_zoom, 0.0); glTranslated(-0.5 - m_scrollX, -0.5 - m_scrollY, 0.0); glClear(GL_COLOR_BUFFER_BIT); glBegin(GL_LINES); glColor3d(1.0, 1.0, 1.0); glVertex2d(0.1, 0.1); glVertex2d(0.9, 0.1); glVertex2d(0.1, 0.1); glVertex2d(0.1, 0.9); glEnd(); glBegin(GL_POLYGON); glVertex2d(0.092, 0.9); glVertex2d(0.108, 0.9); glVertex2d(0.1, 0.92); glEnd(); glBegin(GL_POLYGON); glVertex2d(0.9, 0.092); glVertex2d(0.9, 0.108); glVertex2d(0.92, 0.1); glEnd(); renderText(0.8, 0.05, 0.0, "axis"); } void Plot2dView::resizeGL(int w, int h) { glViewport(0, 0, w, h); glMatrixMode(GL_MODELVIEW_MATRIX); glLoadIdentity(); glMatrixMode(GL_PROJECTION_MATRIX); glLoadIdentity(); glOrtho(-1.0, 1.0, -1.0, 1.0, 0.0, 100.0); } void Plot2dView::wheelEvent(QWheelEvent *wheelEvent) { m_zoomAcceleration += ((double)wheelEvent->delta()) / 5000; wheelEvent->accept(); updateGL(); } void Plot2dView::mousePressEvent(QMouseEvent *mouseEvent) { if(mouseEvent->button() == Qt::LeftButton) { m_leftMouseButtonDown = true; m_lastMouseButtonDownX = mouseEvent->x(); m_lastMouseButtonDownY = mouseEvent->y(); mouseEvent->accept(); } } void Plot2dView::mouseReleaseEvent(QMouseEvent *mouseEvent) { if(mouseEvent->button() == Qt::LeftButton) { m_leftMouseButtonDown = false; mouseEvent->accept(); } } void Plot2dView::mouseMoveEvent(QMouseEvent *mouseEvent) { if(m_leftMouseButtonDown) { m_scrollX -= ((double)mouseEvent->x() - m_lastMouseButtonDownX) / 100; m_scrollY += ((double)mouseEvent->y() - m_lastMouseButtonDownY) / 100; m_lastMouseButtonDownX = (double)mouseEvent->x(); m_lastMouseButtonDownY = (double)mouseEvent->y(); } updateGL(); } void Plot2dView::animate() { m_zoom += m_zoomAcceleration; if(m_zoom < 0) m_zoom = 0; m_zoomAcceleration *= 0.2; if(abs(m_zoomAcceleration) < 0.01) m_zoomAcceleration = 0; updateGL(); } Plot2dWidget::Plot2dWidget(QWidget *parent) : QWidget(parent) { construct(); } void Plot2dWidget::construct() { QVBoxLayout *layout = new QVBoxLayout(); m_plot2dView = new Plot2dView(this); m_plot2dView->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); layout->addWidget(m_plot2dView); m_tabWidget = new QTabWidget(this); m_tabWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum); layout->addWidget(m_tabWidget); m_dataSourceTab = new QWidget(this); m_verticalAxisTab = new QWidget(this); m_horizontalAxisTab = new QWidget(this); m_tabWidget->addTab(m_dataSourceTab, tr("Data Source")); m_tabWidget->addTab(m_verticalAxisTab, tr("Vertical Axis")); m_tabWidget->addTab(m_horizontalAxisTab, tr("Horizontal Axis")); // Build data source tab. QHBoxLayout *dataSourceTabLayout = new QHBoxLayout(); m_dataSourceTypeComboBox = new QComboBox(this); m_dataSourceTypeComboBox->addItem(tr("Parameterized")); m_dataSourceTypeComboBox->addItem(tr("Sampled")); dataSourceTabLayout->addWidget(m_dataSourceTypeComboBox); dataSourceTabLayout->addStretch(); m_dataSourceTab->setLayout(dataSourceTabLayout); layout->setMargin(0); setLayout(layout); }