HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r211:49125612b701

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#include "pieslicelabel.h"

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#include "pieslicelabel.h"

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#include <QPainter>

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#include <QPainter>

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#include <qmath.h>

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#include <qmath.h>

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#include <QGraphicsTextItem>

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#include <QGraphicsTextItem>

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#include <QDebug>

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#include <QDebug>

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QTCOMMERCIALCHART_BEGIN_NAMESPACE

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QTCOMMERCIALCHART_BEGIN_NAMESPACE

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#define PI 3.14159265

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#define PI 3.14159265

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PieSliceLabel::PieSliceLabel(QGraphicsItem* parent)

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PieSliceLabel::PieSliceLabel(QGraphicsItem* parent)

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:QGraphicsItem(parent),

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:QGraphicsItem(parent),

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m_armAngle(0),

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m_armAngle(0),

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m_armLength(0)

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m_armLength(0)

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{

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{

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}

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}

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

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

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{

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{

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painter->setRenderHint(QPainter::Antialiasing);

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painter->setRenderHint(QPainter::Antialiasing);

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painter->setPen(m_pen);

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painter->setPen(m_pen);

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painter->drawPath(m_armPath);

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painter->drawPath(m_armPath);

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// TODO: do we need a pen for text?

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// TODO: do we need a pen for text?

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QFont font;

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painter->setFont(m_font);

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painter->setFont(font);

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painter->drawText(m_textRect.bottomLeft(), m_text);

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painter->drawText(m_textRect.bottomLeft(), m_text);

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//qDebug() << "PieSliceLabel::paint" << m_text << m_textRect;

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//qDebug() << "PieSliceLabel::paint" << m_text << m_textRect;

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}

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}

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void PieSliceLabel::updateGeometry()

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void PieSliceLabel::updateGeometry()

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{

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{

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prepareGeometryChange();

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prepareGeometryChange();

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// calculate text size

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// calculate text size

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QFontMetricsF fm(m_font);

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QFontMetricsF fm(m_font);

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QRectF textRect = fm.boundingRect(m_text);

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QRectF textRect = fm.boundingRect(m_text);

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// calculate path for arm and text start point

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// calculate path for arm and text start point

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qreal dx = qSin(m_armAngle*(PI/180)) * m_armLength;

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qreal dx = qSin(m_armAngle*(PI/180)) * m_armLength;

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qreal dy = -qCos(m_armAngle*(PI/180)) * m_armLength;

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qreal dy = -qCos(m_armAngle*(PI/180)) * m_armLength;

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QPointF parm1 = m_armStartPoint + QPointF(dx, dy);

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QPointF parm1 = m_armStartPoint + QPointF(dx, dy);

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// calculate horizontal arm and text position

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// calculate horizontal arm and text position

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QPointF parm2 = parm1;

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QPointF parm2 = parm1;

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textRect.moveBottomLeft(parm1);

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textRect.moveBottomLeft(parm1);

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if (m_armAngle < 180) { // arm swings the other way on the left side

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if (m_armAngle < 180) { // arm swings the other way on the left side

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parm2 += QPointF(m_textRect.width(), 0);

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parm2 += QPointF(m_textRect.width(), 0);

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} else {

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} else {

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parm2 += QPointF(-m_textRect.width(),0);

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parm2 += QPointF(-m_textRect.width(),0);

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textRect.moveBottomLeft(parm2);

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textRect.moveBottomLeft(parm2);

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}

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}

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// add a little offset to text so that it does not touch the arm

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// add a little offset to text so that it does not touch the arm

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qreal yOffset = m_pen.widthF() ? m_pen.widthF() : 2;

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qreal yOffset = m_pen.widthF() ? m_pen.widthF() : 2;

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textRect.translate(0, -yOffset);

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textRect.translate(0, -yOffset);

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// update arm path

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// update arm path

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QPainterPath path;

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QPainterPath path;

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path.moveTo(m_armStartPoint);

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path.moveTo(m_armStartPoint);

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path.lineTo(parm1);

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path.lineTo(parm1);

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path.lineTo(parm2);

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path.lineTo(parm2);

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// update paths & rects

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// update paths & rects

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m_armPath = path;

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m_armPath = path;

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m_textRect = textRect;

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m_textRect = textRect;

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m_rect = path.boundingRect().united(m_textRect);

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m_rect = path.boundingRect().united(m_textRect);

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//qDebug() << "PieSliceLabel::updateGeometry" << m_text << m_armStartPoint << m_armLength << m_armAngle << m_textRect;

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//qDebug() << "PieSliceLabel::updateGeometry" << m_text << m_armStartPoint << m_armLength << m_armAngle << m_textRect;

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}

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}

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QTCOMMERCIALCHART_END_NAMESPACE

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QTCOMMERCIALCHART_END_NAMESPACE

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             #include "pieslicelabel.h"
             #include <QPainter>
             #include <qmath.h>
             #include <QGraphicsTextItem>
             #include <QDebug>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             #define PI 3.14159265
             PieSliceLabel::PieSliceLabel(QGraphicsItem* parent)
                 :QGraphicsItem(parent),
                 m_armAngle(0),
                 m_armLength(0)
             {
             }
             void PieSliceLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/)
             {
                 painter->setRenderHint(QPainter::Antialiasing);
                 painter->setPen(m_pen);
                 painter->drawPath(m_armPath);
                 // TODO: do we need a pen for text?
-                QFont font;
+                painter->setFont(m_font);
-                painter->setFont(font);
                 painter->drawText(m_textRect.bottomLeft(), m_text);
                 //qDebug() << "PieSliceLabel::paint" << m_text << m_textRect;
             }
             void PieSliceLabel::updateGeometry()
             {
                 prepareGeometryChange();
                 // calculate text size
                 QFontMetricsF fm(m_font);
                 QRectF textRect = fm.boundingRect(m_text);
                 // calculate path for arm and text start point
                 qreal dx = qSin(m_armAngle*(PI/180)) * m_armLength;
                 qreal dy = -qCos(m_armAngle*(PI/180)) * m_armLength;
                 QPointF parm1 = m_armStartPoint + QPointF(dx, dy);
                 // calculate horizontal arm and text position
                 QPointF parm2 = parm1;
                 textRect.moveBottomLeft(parm1);
                 if (m_armAngle < 180) { // arm swings the other way on the left side
                      parm2 += QPointF(m_textRect.width(), 0);
                 } else {
                      parm2 += QPointF(-m_textRect.width(),0);
                      textRect.moveBottomLeft(parm2);
                 }
                 // add a little offset to text so that it does not touch the arm
                 qreal yOffset = m_pen.widthF() ? m_pen.widthF() : 2;
                 textRect.translate(0, -yOffset);
                 // update arm path
                 QPainterPath path;
                 path.moveTo(m_armStartPoint);
                 path.lineTo(parm1);
                 path.lineTo(parm2);
                 // update paths & rects
                 m_armPath = path;
                 m_textRect = textRect;
                 m_rect = path.boundingRect().united(m_textRect);
                 //qDebug() << "PieSliceLabel::updateGeometry" << m_text << m_armStartPoint << m_armLength << m_armAngle << m_textRect;
             }
             QTCOMMERCIALCHART_END_NAMESPACE