gnuplot/src/qtterminal/QtGnuplotWidget.cpp at 5.5 · gnuplot/gnuplot · GitHub

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/* GNUPLOT - QtGnuplotWidget.cpp */

/*[

* Permission to use, copy, and distribute this software and its

* documentation for any purpose with or without fee is hereby granted,

* provided that the above copyright notice appear in all copies and

* that both that copyright notice and this permission notice appear

* in supporting documentation.

* Permission to modify the software is granted, but not the right to

* distribute the complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

* Alternatively, the contents of this file may be used under the terms of the

* GNU General Public License Version 2 or later (the "GPL"), in which case the

* provisions of GPL are applicable instead of those above. If you wish to allow

* use of your version of this file only under the terms of the GPL and not

* to allow others to use your version of this file under the above gnuplot

* license, indicate your decision by deleting the provisions above and replace

* them with the notice and other provisions required by the GPL. If you do not

* delete the provisions above, a recipient may use your version of this file

* under either the GPL or the gnuplot license.

]*/

#include "QtGnuplotWidget.h"

#include "QtGnuplotEvent.h"

#include "QtGnuplotScene.h"

#include "QtGnuplotItems.h"

extern "C" {

#include "../mousecmn.h"

}

#include <QtGui>

#include <QSvgGenerator>

int QtGnuplotWidget::m_widgetUid = 1;

QtGnuplotWidget::QtGnuplotWidget(QWidget* parent)

: QWidget(parent)

, m_id(0)

{

m_eventHandler = 0;

init();

}

QtGnuplotWidget::QtGnuplotWidget(int id, QtGnuplotEventHandler* eventHandler, QWidget* parent)

: QWidget(parent)

, m_id(id)

{

m_eventHandler = eventHandler;

init();

}

void QtGnuplotWidget::init()

{

m_active = false;

m_lastSizeRequest = QSize(-1, -1);

m_rounded = true;

m_ctrlQ = true;

m_backgroundColor = Qt::white;

m_antialias = true;

m_replotOnResize = true;

m_statusLabelActive = false;

m_skipResize = false;

// Register as the main event receiver if not already created

if (m_eventHandler == 0)

m_eventHandler = new QtGnuplotEventHandler(this,"qtgnuplot" +

QString::number(QCoreApplication::applicationPid()) + "-" +

QString::number(m_widgetUid++));

// Construct GUI elements

m_scene = new QtGnuplotScene(m_eventHandler, this);

m_view = new QGraphicsView(m_scene);

m_view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

m_view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

QVBoxLayout* layout = new QVBoxLayout();

layout->setContentsMargins(0, 0, 0, 0);

layout->addWidget(m_view);

setLayout(layout);

setViewMatrix();

m_statusLabel = new QLabel(m_view->viewport());

m_statusLabel->setStyleSheet("QLabel { background-color : rgba(230, 212, 166, 150) }");

m_statusLabel->setMargin(1);

m_statusLabel->setVisible(false);

}

void QtGnuplotWidget::setStatusText(const QString& status)

{

if (m_statusLabelActive)

{

m_statusLabel->setText(status);

m_statusLabel->adjustSize();

m_statusLabel->move(m_view->viewport()->width() - m_statusLabel->width(), 0);

m_statusLabel->setVisible(true);

}

emit statusTextChanged(status);

}

bool QtGnuplotWidget::isActive() const

{

return m_active;

}

QSize QtGnuplotWidget::plotAreaSize() const

{

return m_view->viewport()->size();

}

void QtGnuplotWidget::setViewMatrix()

{

m_view->resetTransform();

}

void QtGnuplotWidget::processEvent(QtGnuplotEventType type, QDataStream& in)

{

// Plot is done. Emit a signal and forward to the scene

if (type == GEDone)

{

emit plotDone();

m_scene->processEvent(type, in);

return;

}

if (type == GESetWidgetSize)

{

QSize s;

in >> s;

m_lastSizeRequest = s;

m_view->resetTransform();

QWidget* viewport = m_view->viewport();

/* qDebug() << "QtGnuplotWidget::processEvent Size request" << s << size() << " / viewport" << m_view->maximumViewportSize();

qDebug() << " widget size " << size();

qDebug() << " view size " << m_view->size();

qDebug() << " viewport size " << viewport->size();

qDebug() << " last size req." << m_lastSizeRequest;

// Qt has no reliable mechanism to set the size of widget while having

// it resizable. So we heuristically use the resize function to set the

// size of the plotting area when the plot window is already displayed.

// When the window is not yet displayed, this does not work because the

// window messes up with its content sizes before showing up. In this

// case, we use the sizeHint mechanism to tell the window which size we

// prefer for the plotting area. On MacOS, it looks like QMainWindow

// forgets the status bar area when it layouts its contents. This makes

// the plot area 14 pixels too small in the vertical direction when the

// plot window is first displayed.

QMainWindow* parent = dynamic_cast<QMainWindow*>(parentWidget());

if ((s != viewport->size()) || (parent && !parent->isVisible()))

{

// qDebug() << " -> resizing";

if (parent)

{

// The parent is not visible : resize via the sizeHint mechanism

// because the "resize" function is not active

if (!parent->isVisible())

{

m_skipResize = true;

m_sizeHint = s + QSize(2*m_view->frameWidth(), 2*m_view->frameWidth());

parent->updateGeometry();

parent->show();

m_skipResize = false;

}

parent->resize(s + parent->size() - viewport->size());

}

viewport->resize(s);

}

else if (type == GEStatusText)

{

QString status;

in >> status;

setStatusText(status);

}

else if (type == GECopyClipboard)

{

QString text;

in >> text;

QApplication::clipboard()->setText(text);

}

else if (type == GECursor)

{

int cursorType;

in >> cursorType;

m_view->setCursor(Qt::CursorShape(cursorType));

}

else if (type == GEWrapCursor)

{

QPoint point; in >> point;

QCursor::setPos(mapToGlobal(point));

}

else if (type == GEActivate)

m_active = true;

else if (type == GEDesactivate)

m_active = false;

// Forward the event to the scene

else

m_scene->processEvent(type, in);

}

void QtGnuplotWidget::resizeEvent(QResizeEvent* event)

{

QWidget* viewport = m_view->viewport();

/* qDebug() << "QtGnuplotWidget::resizeEvent" << isVisible();

qDebug() << " event->size " << event->size();

qDebug() << " event->oldSize" << event->oldSize();

qDebug() << " widget size " << size();

qDebug() << " view size " << m_view->size();

qDebug() << " viewport size " << viewport->size();

qDebug() << " last size req." << m_lastSizeRequest;

m_statusLabel->move(viewport->width() - m_statusLabel->width(), 0);

// We only inform gnuplot of a new size, and not of the first resize event

if ((viewport->size() != m_lastSizeRequest) && (m_lastSizeRequest != QSize(-1, -1)) && !m_skipResize)

{

// qDebug() << " -> Sending event";

m_eventHandler->postTermEvent(GE_fontprops,viewport->size().width(),

viewport->size().height(), 0, 0, this);

if (m_replotOnResize && isActive())

m_eventHandler->postTermEvent(GE_replot, 0, 0, 0, 0, this);

else

m_view->fitInView(m_scene->sceneRect(), Qt::KeepAspectRatio);

}

QWidget::resizeEvent(event);

}

QPainter::RenderHints QtGnuplotWidget::renderHints() const

{

QPainter::RenderHints hint = QPainter::TextAntialiasing;

if (m_antialias)

hint |= QPainter::Antialiasing;

return hint;

}

QSize QtGnuplotWidget::sizeHint() const

{

return m_sizeHint;

}

/////////////////////////////////////////////////

// Slots

QPixmap QtGnuplotWidget::createPixmap()

{

QPixmap pixmap(m_scene->width(), m_scene->height());

pixmap.fill();

QPainter painter(&pixmap);

painter.translate(0.5, 0.5);

painter.setRenderHints(renderHints());

m_scene->render(&painter);

painter.end();

return pixmap;

}

void QtGnuplotWidget::copyToClipboard()

{

QApplication::clipboard()->setPixmap(createPixmap());

}

void QtGnuplotWidget::print(QPrinter& printer)

{

QPainter painter(&printer);

painter.setRenderHints(renderHints());

m_scene->render(&painter);

}

void QtGnuplotWidget::exportToPdf(const QString& fileName)

{

QPrinter printer;

printer.setOutputFormat(QPrinter::PdfFormat);

printer.setOutputFileName(fileName);

#if QT_VERSION < QT_VERSION_CHECK(5, 3, 0)

printer.setPaperSize(QSizeF(m_scene->width(), m_scene->height()), QPrinter::Point);

printer.setPageMargins(0, 0, 0, 0, QPrinter::Point);

#else

printer.setPageSize(QPageSize(QSizeF(m_scene->width(), m_scene->height()), QPageSize::Point));

printer.setPageMargins(QMarginsF(0, 0, 0, 0), QPageLayout::Point);

#endif

QPainter painter(&printer);

painter.setRenderHints(renderHints());

m_scene->render(&painter);

}

void QtGnuplotWidget::exportToEps()

{

/// @todo

}

void QtGnuplotWidget::exportToImage(const QString& fileName)

{

createPixmap().save(fileName);

}

void QtGnuplotWidget::exportToSvg(const QString& fileName)

{

QSvgGenerator svg;

svg.setFileName(fileName);

svg.setSize(QSize(m_view->width(), m_view->height()));

svg.setViewBox(QRect(0, 0, m_view->width(), m_view->height()));

QPainter painter(&svg);

m_scene->render(&painter);

painter.end();

}

/////////////////////////////////////////////////

// Settings

void QtGnuplotWidget::loadSettings(const QSettings& settings)

{

setAntialias(settings.value("antialias", true).toBool());

setRounded(settings.value("rounded", true).toBool());

setCtrlQ(settings.value("ctrlQ", true).toBool());

setBackgroundColor(settings.value("backgroundColor", QColor(Qt::white)).value<QColor>());

setReplotOnResize(settings.value("replotOnResize", true).toBool());

setStatusLabelActive(settings.value("statusLabelActive", false).toBool());

}

void QtGnuplotWidget::saveSettings(QSettings& settings) const

{

settings.setValue("antialias", m_antialias);

settings.setValue("rounded", m_rounded);

settings.setValue("ctrlQ", m_ctrlQ);

settings.setValue("backgroundColor", m_backgroundColor);

settings.setValue("replotOnResize", m_replotOnResize);

settings.setValue("statusLabelActive", m_statusLabelActive);

}

void QtGnuplotWidget::setAntialias(bool value)

{

m_antialias = value;

m_view->setRenderHints(renderHints());

}

void QtGnuplotWidget::setRounded(bool value)

{

m_rounded = value;

}

void QtGnuplotWidget::setCtrlQ(bool value)

{

m_ctrlQ = value;

}

void QtGnuplotWidget::setReplotOnResize(bool value)

{

m_replotOnResize = value;

}

void QtGnuplotWidget::setBackgroundColor(const QColor& color)

{

m_backgroundColor = color;

m_view->setBackgroundBrush(m_backgroundColor);

}

void QtGnuplotWidget::setStatusLabelActive(bool active)

{

m_statusLabelActive = active;

if (!active)

m_statusLabel->setVisible(false);

}

gnuplot/src/qtterminal/QtGnuplotWidget.cpp at 5.5 · gnuplot/gnuplot · GitHub

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