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piesliceitem.cpp
212 lines | 6.1 KiB | text/x-c | CppLexer
/ src / piechart / piesliceitem.cpp
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Jani Honkonen
Add license headers
 r794 /****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 #include "piesliceitem_p.h"
Jani Honkonen
Rename piepresenter -> piechartitem
 r568 #include "piechartitem_p.h"
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 #include "qpieseries.h"
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 #include "qpieslice.h"
Tero Ahola
Z order for pie
 r490 #include "chartpresenter_p.h"
Tero Ahola
Integrated draft version of pie series
 r51 #include <QPainter>
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 #include <qmath.h>
Jani Honkonen
Make pie work better with chartwidgettest
 r163 #include <QGraphicsSceneEvent>
Jani Honkonen
Refactoring piechart API (and internals)
 r174 #include <QTime>
Tero Ahola
Integrated draft version of pie series
 r51
QTCOMMERCIALCHART_BEGIN_NAMESPACE
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 #define PI 3.14159265 // TODO: is this defined in some header?
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 QPointF offset(qreal angle, qreal length)
{
qreal dx = qSin(angle*(PI/180)) * length;
qreal dy = qCos(angle*(PI/180)) * length;
return QPointF(dx, -dy);
}
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 PieSliceItem::PieSliceItem(QGraphicsItem* parent)
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 :QGraphicsObject(parent)
Tero Ahola
Integrated draft version of pie series
 r51 {
setAcceptHoverEvents(true);
Jani Honkonen
Add mousebuttons to pie clicked signals
 r707 setAcceptedMouseButtons(Qt::MouseButtonMask);
Tero Ahola
Z order for pie
 r490 setZValue(ChartPresenter::PieSeriesZValue);
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 PieSliceItem::~PieSliceItem()
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 QRectF PieSliceItem::boundingRect() const
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Refactoring pie series and animations.
 r621 return m_boundingRect;
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 QPainterPath PieSliceItem::shape() const
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Introducing vertical and horizontal factors to control the position of the pie.
 r454 // Don't include the label and label arm.
// This is used to detect a mouse clicks. We do not want clicks from label.
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 return m_slicePath;
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 void PieSliceItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/)
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 painter->save();
Tero Ahola
Declarative series classed now derived from QSeries childs
 r789 painter->setClipRect(parentItem()->boundingRect());
Jani Honkonen
Adding PIMPL to pie
 r669 painter->setPen(m_data.m_slicePen);
painter->setBrush(m_data.m_sliceBrush);
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 painter->drawPath(m_slicePath);
painter->restore();
Jani Honkonen
Fix setting custom color to pie. Now the pie knows if the color is set by the user.
 r691 if (m_data.m_isLabelVisible) {
Jani Honkonen
Fix piechart clipping bug
 r905 painter->setClipRect(parentItem()->boundingRect());
Jani Honkonen
Get pie slice label font and pen from theme
 r714 painter->setPen(m_data.m_labelPen);
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 painter->drawPath(m_labelArmPath);
Jani Honkonen
Get pie slice label font and pen from theme
 r714 // the pen color will affect the font color as well
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 painter->setFont(m_data.m_labelFont);
painter->drawText(m_labelTextRect.bottomLeft(), m_data.m_labelText);
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 }
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 void PieSliceItem::hoverEnterEvent(QGraphicsSceneHoverEvent* /*event*/)
Tero Ahola
Integrated draft version of pie series
 r51 {
Jani Honkonen
Pie doc updates
 r952 emit hoverEnter(); // TODO: refactor emit hover(somebooleanvalue)
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 void PieSliceItem::hoverLeaveEvent(QGraphicsSceneHoverEvent* /*event*/)
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 {
Jani Honkonen
Pie doc updates
 r952 emit hoverLeave(); // TODO: refactor emit hover(somebooleanvalue)
Tero Ahola
Integrated draft version of pie series
 r51 }
Jani Honkonen
Add mousebuttons to pie clicked signals
 r707 void PieSliceItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
Jani Honkonen
Pie chart refactoring
 r142 {
Jani Honkonen
Add mousebuttons to pie clicked signals
 r707 emit clicked(event->buttons());
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 void PieSliceItem::setSliceData(PieSliceData sliceData)
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 {
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 m_data = sliceData;
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 void PieSliceItem::updateGeometry()
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 {
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 if (m_data.m_radius <= 0)
Jani Honkonen
Make pie fit better inside its given rectangle. Label texts still go outside. Needs a bit more work...
 r289 return;
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 prepareGeometryChange();
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 // update slice path
qreal centerAngle;
QPointF armStart;
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 m_slicePath = slicePath(m_data.m_center, m_data.m_radius, m_data.m_startAngle, m_data.m_angleSpan, &centerAngle, &armStart);
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 // update text rect
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 m_labelTextRect = labelTextRect(m_data.m_labelFont, m_data.m_labelText);
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 // update label arm path
QPointF labelTextStart;
Jani Honkonen
Rename PieSliceLayout -> PieSliceData. A "layout" is a bad name for this.
 r668 m_labelArmPath = labelArmPath(armStart, centerAngle, m_data.m_radius * m_data.m_labelArmLengthFactor, m_labelTextRect.width(), &labelTextStart);
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 // update text position
m_labelTextRect.moveBottomLeft(labelTextStart);
Jani Honkonen
Refactoring piechart API (and internals)
 r174
Jani Honkonen
Refactoring pie series and animations.
 r621 // update bounding rect
Jani Honkonen
PieSliceItem bounding rect fix
 r718 if (m_data.m_isLabelVisible)
m_boundingRect = m_slicePath.boundingRect().united(m_labelArmPath.boundingRect()).united(m_labelTextRect);
else
m_boundingRect = m_slicePath.boundingRect();
Jani Honkonen
Refactor pie (again). QPieSlice's now emit signals and no id's anymore. Just pointers in the interface.
 r203 }
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 QPointF PieSliceItem::sliceCenter(QPointF point, qreal radius, QPieSlice *slice)
Jani Honkonen
Refactoring the pie for animations (no actual animations yet)
 r566 {
if (slice->isExploded()) {
Jani Honkonen
Adding PIMPL to pie
 r669 qreal centerAngle = slice->startAngle() + ((slice->endAngle() - slice->startAngle())/2);
Jani Honkonen
Refactoring the pie for animations (no actual animations yet)
 r566 qreal len = radius * slice->explodeDistanceFactor();
qreal dx = qSin(centerAngle*(PI/180)) * len;
qreal dy = -qCos(centerAngle*(PI/180)) * len;
point += QPointF(dx, dy);
}
return point;
Jani Honkonen
Use signals from pieseries, visible hover and exploding slices
 r157 }
Jani Honkonen
Prevent slice label pointing straight down (because it looks bad).
 r972 QPainterPath PieSliceItem::slicePath(QPointF center, qreal radius, qreal startAngle, qreal angleSpan, qreal *centerAngle, QPointF* armStart)
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 {
// calculate center angle
*centerAngle = startAngle + (angleSpan/2);
// calculate slice rectangle
QRectF rect(center.x()-radius, center.y()-radius, radius*2, radius*2);
// slice path
// TODO: draw the shape so that it might have a hole in the center
QPainterPath path;
path.moveTo(rect.center());
path.arcTo(rect, -startAngle + 90, -angleSpan);
path.closeSubpath();
// calculate label arm start point
*armStart = center;
Jani Honkonen
Refactoring the pie for animations (no actual animations yet)
 r566 *armStart += offset(*centerAngle, radius + PIESLICE_LABEL_GAP);
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437
return path;
}
Jani Honkonen
Prevent slice label pointing straight down (because it looks bad).
 r972 QPainterPath PieSliceItem::labelArmPath(QPointF start, qreal angle, qreal length, qreal textWidth, QPointF *textStart)
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 {
Jani Honkonen
Prevent slice label pointing straight down (because it looks bad).
 r972 // prevent label arm pointing straight down because it will look bad
if (angle < 180 && angle > 170)
angle = 170;
if (angle > 180 && angle < 190)
angle = 190;
// line from slice to label
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 qreal dx = qSin(angle*(PI/180)) * length;
qreal dy = -qCos(angle*(PI/180)) * length;
QPointF parm1 = start + QPointF(dx, dy);
Jani Honkonen
Prevent slice label pointing straight down (because it looks bad).
 r972 // line to underline the label
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 QPointF parm2 = parm1;
if (angle < 180) { // arm swings the other way on the left side
parm2 += QPointF(textWidth, 0);
*textStart = parm1;
}
else {
parm2 += QPointF(-textWidth,0);
*textStart = parm2;
}
// elevate the text position a bit so that it does not hit the line
Jani Honkonen
Prevent slice label pointing straight down (because it looks bad).
 r972 *textStart += QPointF(0, -3);
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437
QPainterPath path;
path.moveTo(start);
path.lineTo(parm1);
path.lineTo(parm2);
return path;
}
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 QRectF PieSliceItem::labelTextRect(QFont font, QString text)
Jani Honkonen
Added a pie chart customization example and refactoring the pie interface.
 r437 {
QFontMetricsF fm(font);
return fm.boundingRect(text);
}
Jani Honkonen
rename PieSlice -> PieSliceItem
 r673 #include "moc_piesliceitem_p.cpp"
Jani Honkonen
Refactoring piechart API (and internals)
 r174
Tero Ahola
Integrated draft version of pie series
 r51 QTCOMMERCIALCHART_END_NAMESPACE