gnuplot/src/qtterminal/QtGnuplotItems.cpp at master · gnuplot/gnuplot · GitHub

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/* GNUPLOT - QtGnuplotItems.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 "QtGnuplotItems.h"

#include <QtGui>

#if QT_VERSION < QT_VERSION_CHECK(5, 11, 0)

#define horizontalAdvance width

#endif

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

// QtGnuplotEnhanced

void QtGnuplotEnhanced::addText(const QString& fontName, double fontSize,

QFont::Style fontStyle, QFont::Weight fontWeight,

double base, bool widthFlag,

bool showFlag, int overprint, const QString& text, QColor color)

{

if ((overprint == 1) && !(m_overprintMark)) // Underprint

{

m_overprintPos = m_currentPos.x();

m_overprintMark = true;

}

if (overprint == 3) // Save position

m_savedPos = m_currentPos;

else if (overprint == 4) // Recall saved position

m_currentPos = m_savedPos;

QFont font(fontName, fontSize);

if (fontName.isEmpty()) {

// qDebug() << "Empty font name";

font.setFamily("Sans"); // FIXME: use default? use previous?

}

font.setStyle(fontStyle);

font.setWeight(fontWeight);

font.setStyleStrategy(QFont::ForceOutline); // pcf fonts die if rotated

QtGnuplotEnhancedFragment* item = new QtGnuplotEnhancedFragment(font, text, this);

item->setPos(m_currentPos + QPointF(0., -base));

if (showFlag)

item->setPen(color);

else

item->setPen(Qt::NoPen);

if (overprint == 2) // Overprint

{

item->setPos(QPointF((m_overprintPos + m_currentPos.x())/2. - item->width()/2., -base));

m_overprintMark = false;

}

if (widthFlag && (overprint != 2))

m_currentPos += QPointF(item->width(), 0.);

}

void QtGnuplotEnhanced::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)

{

Q_UNUSED(painter);

Q_UNUSED(option);

Q_UNUSED(widget);

}

QtGnuplotEnhancedFragment::QtGnuplotEnhancedFragment(const QFont& font, const QString& text, QGraphicsItem * parent)

: QAbstractGraphicsShapeItem(parent)

{

m_font = font;

m_text = text;

}

QRectF QtGnuplotEnhancedFragment::boundingRect() const

{

QFontMetricsF metrics(m_font);

return metrics.boundingRect(m_text);

}

qreal QtGnuplotEnhancedFragment::width() const

{

QFontMetricsF metrics(m_font);

return metrics.horizontalAdvance(m_text);

}

void QtGnuplotEnhancedFragment::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)

{

Q_UNUSED(option);

Q_UNUSED(widget);

painter->setPen(pen());

painter->setFont(m_font);

painter->drawText(QPointF(0.,0.), m_text);

}

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

// QtGnuplotPoint

QtGnuplotPoint::QtGnuplotPoint(int style, double size, QPen pen, QGraphicsItem * parent)

: QGraphicsItem(parent)

{

m_pen = pen;

m_color = pen.color();

m_style = style;

m_size = 3.*size;

}

QRectF QtGnuplotPoint::boundingRect() const

{

return QRectF(QPointF(-m_size, -m_size), QPointF(m_size, m_size));

}

void QtGnuplotPoint::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)

{

Q_UNUSED(option);

Q_UNUSED(widget);

const int style = m_style % 15;

if ((style % 2 == 0) && (style > 3)) // Filled points

{

painter->setPen(m_color);

painter->setBrush(m_color);

}

else

painter->setPen(m_pen);

drawPoint(painter, QPointF(0., 0.), m_size, style);

}

void QtGnuplotPoint::drawPoint(QPainter* painter, const QPointF& origin, double size, int style)

{

if (style == -1) // dot

{

painter->drawPoint(origin);

return;

}

if ((style == 0) || (style == 2)) // plus or star

{

painter->drawLine(origin + QPointF(0., -size), origin + QPointF(0., size));

painter->drawLine(origin + QPointF(-size, 0.), origin + QPointF(size, 0.));

}

if ((style == 1) || (style == 2)) // cross or star

{

painter->drawLine(origin + QPointF(-size, -size), origin + QPointF(size, size));

painter->drawLine(origin + QPointF(-size, size), origin + QPointF(size, -size));

}

else if ((style == 3) || (style == 4)) // box

painter->drawRect(QRectF(origin + QPointF(-size, -size), origin + QPointF(size, size)));

else if ((style == 5) || (style == 6)) // circle

painter->drawEllipse(QRectF(origin + QPointF(-size, -size), origin + QPointF(size, size)));

else if ((style == 7) || (style == 8)) // triangle

{

const QPointF p[3] = { origin + QPointF(0., -size),

origin + QPointF(.866*size, .5*size),

origin + QPointF(-.866*size, .5*size)};

painter->drawPolygon(p, 3);

}

else if ((style == 9) || (style == 10)) // upside down triangle

{

const QPointF p[3] = { origin + QPointF(0., size),

origin + QPointF(.866*size, -.5*size),

origin + QPointF(-.866*size, -.5*size)};

painter->drawPolygon(p, 3);

}

else if ((style == 11) || (style == 12)) // diamond

{

const QPointF p[4] = { origin + QPointF(0., size),

origin + QPointF(size, 0.),

origin + QPointF(0., -size),

origin + QPointF(-size, 0.)};

painter->drawPolygon(p, 4);

}

else if ((style == 13) || (style == 14)) // pentagon

{

const QPointF p[5] = { origin + QPointF(0., size),

origin + QPointF( size*0.9511, size*0.3090),

origin + QPointF( size*0.5878, -size*0.8090),

origin + QPointF(-size*0.5878, -size*0.8090),

origin + QPointF(-size*0.9511, size*0.3090)};

painter->drawPolygon(p, 5);

}

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

// QtGnuplotPoints

QtGnuplotPoints::QtGnuplotPoints(QGraphicsItem * parent)

: QGraphicsItem(parent)

{

m_currentZ = 0;

}

QRectF QtGnuplotPoints::boundingRect() const

{

return m_boundingRect;

}

void QtGnuplotPoints::addPoint(const QPointF& point, int style, double pointSize, const QPen& pen)

{

QtGnuplotPoints_PointData pointData;

pointData.point = point;

pointData.style = style;

pointData.pointSize = 3*pointSize;

pointData.pen = pen;

pointData.z = m_currentZ++;

m_points << pointData;

const double size = pointData.pointSize;

const QPointF& origin = pointData.point;

m_boundingRect = m_boundingRect.united(QRectF(origin + QPointF(-size, -size), origin + QPointF(size, size)));

}

void QtGnuplotPoints::addPolygon(const QPolygonF& polygon, const QPen& pen)

{

QtGnuplotPoints_PolygonData polygonData;

polygonData.polygon = polygon;

polygonData.pen = pen;

polygonData.z = m_currentZ++;

m_polygons << polygonData;

m_boundingRect = m_boundingRect.united(polygon.boundingRect());

}

void QtGnuplotPoints::addFilledPolygon(const QPolygonF& polygon, const QBrush& brush)

{

QtGnuplotPoints_FilledPolygonData filledPolygonData;

filledPolygonData.polygon = polygon;

filledPolygonData.brush = brush;

filledPolygonData.z = m_currentZ++;

m_filledPolygons << filledPolygonData;

m_boundingRect = m_boundingRect.united(polygon.boundingRect());

}

bool QtGnuplotPoints::isEmpty() const

{

return m_points.isEmpty() && m_polygons.isEmpty() && m_filledPolygons.isEmpty();

}

void QtGnuplotPoints::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)

{

Q_UNUSED(option);

Q_UNUSED(widget);

painter->setBrush(Qt::NoBrush);

int i = 0;

int j = 0;

int k = 0;

unsigned int z = 0;

while ((i < m_points.size()) || (j < m_polygons.size()) || (k < m_filledPolygons.size()))

{

for (; i < m_points.size() && m_points[i].z == z; i++, z++)

{

const int style = m_points[i].style % 15;

painter->setPen(m_points[i].pen.color());

if ((style % 2 == 0) && (style > 3)) // Filled points

painter->setBrush(m_points[i].pen.color());

else

{

painter->setPen(m_points[i].pen);

painter->setBrush(Qt::NoBrush);

}

QtGnuplotPoint::drawPoint(painter, m_points[i].point, m_points[i].pointSize, style);

}

painter->setBrush(Qt::NoBrush);

for (; j < m_polygons.size() && m_polygons[j].z == z; j++, z++)

{

painter->setPen(m_polygons[j].pen);

painter->drawPolyline(m_polygons[j].polygon);

}

for (; k < m_filledPolygons.size() && m_filledPolygons[k].z == z; k++, z++)

{

QPen pen = Qt::NoPen;

QBrush& brush = m_filledPolygons[k].brush;

if (brush.isOpaque())

pen = brush.color();

painter->setPen(pen);

painter->setBrush(brush);

painter->drawPolygon(m_filledPolygons[k].polygon);

}

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

// QtGnuplotKeyBox

* EAM - support for toggling plots by clicking on a key sample

QtGnuplotKeybox::QtGnuplotKeybox(const QRectF& rect) : QRectF(rect)

{

m_hidden = false;

m_statusBox = NULL;

}

bool QtGnuplotKeybox::ishidden() const

{

return m_hidden;

}

void QtGnuplotKeybox::setHidden(bool state)

{

m_hidden = state;

if (m_statusBox)

m_statusBox->setVisible(m_hidden);

}

void QtGnuplotKeybox::showStatus(QGraphicsRectItem* me)

{

m_statusBox = me;

m_statusBox->setVisible(m_hidden);

}

void QtGnuplotKeybox::resetStatus()

{

m_statusBox = NULL;

}

gnuplot/src/qtterminal/QtGnuplotItems.cpp at master · gnuplot/gnuplot · GitHub

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