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qlegend.cpp
452 lines | 11.0 KiB | text/x-c | CppLexer
Jani Honkonen
Add license headers
r794 /****************************************************************************
Michal Klocek
Adds qlegend pimpl...
r950 **
** 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
Add license headers
r794
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framework for legend
r524 #include "qlegend.h"
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r950 #include "qlegend_p.h"
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 #include "qabstractseries.h"
#include "qabstractseries_p.h"
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r950 #include "qchart_p.h"
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r547 #include "legendmarker_p.h"
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r565 #include "qxyseries.h"
#include "qlineseries.h"
#include "qareaseries.h"
#include "qscatterseries.h"
#include "qsplineseries.h"
#include "qbarseries.h"
#include "qstackedbarseries.h"
#include "qpercentbarseries.h"
#include "qbarset.h"
#include "qpieseries.h"
#include "qpieslice.h"
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r626 #include "chartpresenter_p.h"
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r529 #include <QPainter>
#include <QPen>
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r855 #include <QTimer>
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framework for legend
r524
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r547 #include <QGraphicsSceneEvent>
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r529
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r547 QTCOMMERCIALCHART_BEGIN_NAMESPACE
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First version of legend. Simple markers and serie names. Using drilldown as example for now.
r529
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r728 /*!
Tero Ahola
Documentation fixes....
r995 \class QLegend
\brief part of QtCommercial chart API.
\mainclass
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r728
Tero Ahola
Documentation fixes....
r995 QLegend is a graphical object, whics displays legend of the chart. Legend state is updated by QChart, when
series have been changed. By default, legend is drawn by QChart, but user can set a new parent to legend and
handle the drawing manually.
User isn't supposed to create or delete legend objects, but can reference it via QChart class.
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r728
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Documentation fixes....
r995 \image examples_percentbarchart_legend.png
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r728
Tero Ahola
Documentation fixes....
r995 \sa QChart
*/
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r728
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layout fix to legend. Documented legend functions.
r724 /*!
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r950 \enum QLegend::Alignment
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r724
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r950 This enum describes the possible position for legend inside chart.
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r724
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r950 \value AlignmentTop
\value AlignmentBottom
\value AlignmentLeft
\value AlignmentRight
*/
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r724
/*!
Michal Klocek
Adds qlegend pimpl...
r950 \fn qreal QLegend::minWidth() const
Returns minimum width of the legend
*/
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r724
/*!
Michal Klocek
Adds qlegend pimpl...
r950 \fn qreal QLegend::minHeight() const
Returns minimum height of the legend
*/
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r724
/*!
Michal Klocek
Adds qlegend pimpl...
r950 Constructs the legend object and sets the parent to \a parent
*/
Michal Klocek
Refactor qledgend handling...
r855
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Fixes previous commit
r791 QLegend::QLegend(QChart *chart):QGraphicsWidget(chart),
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r950 d_ptr(new QLegendPrivate(chart->d_ptr->m_presenter,this))
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minor code review fixes
r762 {
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r626 setZValue(ChartPresenter::LegendZValue);
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r855 setFlags(QGraphicsItem::ItemClipsChildrenToShape);
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r950 setEnabled(false); // By default legend is disabled
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r956 setVisible(false);
Tero Ahola
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r988 QObject::connect(chart->d_ptr->m_dataset,SIGNAL(seriesAdded(QAbstractSeries *, Domain *)),d_ptr.data(),SLOT(handleSeriesAdded(QAbstractSeries *,Domain*)));
QObject::connect(chart->d_ptr->m_dataset,SIGNAL(seriesRemoved(QAbstractSeries *)),d_ptr.data(),SLOT(handleSeriesRemoved(QAbstractSeries *)));
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r950 }
QLegend::~QLegend()
{
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r524 }
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r724 /*!
Michal Klocek
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r950 Paints the legend to given \a painter. Paremeters \a option and \a widget arent used.
*/
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r855
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r524 void QLegend::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
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r950 Q_UNUSED(option)
Q_UNUSED(widget)
if(!d_ptr->m_backgroundVisible) return;
Tero Ahola
Squashed bunch of warnings
r611
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r724 painter->setOpacity(opacity());
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r950 painter->setPen(d_ptr->m_pen);
painter->setBrush(d_ptr->m_brush);
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r855 painter->drawRect(boundingRect());
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r524 }
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r724 /*!
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r950 Bounding rect of legend.
*/
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r855
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r524 QRectF QLegend::boundingRect() const
{
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r950 return d_ptr->m_rect;
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r524 }
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r724 /*!
Michal Klocek
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r950 Sets the \a brush of legend. Brush affects the background of legend.
*/
Tero Ahola
Code review: Fixed simple issues in Bar and Legend
r737 void QLegend::setBrush(const QBrush &brush)
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r540 {
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r950 if (d_ptr->m_brush != brush) {
d_ptr->m_brush = brush;
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r645 update();
}
}
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r724 /*!
Michal Klocek
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r950 Returns the brush used by legend.
*/
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r645 QBrush QLegend::brush() const
{
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r950 return d_ptr->m_brush;
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r645 }
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r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Sets the \a pen of legend. Pen affects the legend borders.
*/
Tero Ahola
Code review: Fixed simple issues in Bar and Legend
r737 void QLegend::setPen(const QPen &pen)
Michal Klocek
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r645 {
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r950 if (d_ptr->m_pen != pen) {
d_ptr->m_pen = pen;
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r645 update();
}
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r540 }
sauimone
layout fix to legend. Documented legend functions.
r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Returns the pen used by legend
*/
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r724
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r645 QPen QLegend::pen() const
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r540 {
Michal Klocek
Adds qlegend pimpl...
r950 return d_ptr->m_pen;
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r540 }
sauimone
layout fix to legend. Documented legend functions.
r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Sets the \a alignment for legend. Legend tries to paint itself on the defined position in chart.
\sa QLegend::Alignment
*/
Jani Honkonen
Spelling fix QLegend::setAlignmnent -> setAlignment
r907 void QLegend::setAlignment(QLegend::Alignments alignment)
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r616 {
Michal Klocek
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r950 if(d_ptr->m_alignment!=alignment && d_ptr->m_attachedToChart) {
d_ptr->m_alignment = alignment;
d_ptr->updateLayout();
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r855 }
sauimone
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r716 }
sauimone
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r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Returns the preferred layout for legend
*/
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r803 QLegend::Alignments QLegend::alignment() const
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r716 {
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r950 return d_ptr->m_alignment;
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r616 }
sauimone
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r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Detaches the legend from chart. Chart won't change layout of the legend.
*/
void QLegend::detachFromChart()
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r524 {
Michal Klocek
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r950 d_ptr->m_attachedToChart = false;
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r586 }
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r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Attaches the legend to chart. Chart may change layout of the legend.
*/
void QLegend::attachToChart()
sauimone
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r586 {
Michal Klocek
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r950 d_ptr->m_attachedToChart = true;
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handleThemeChanged slot to legend.
r586 }
sauimone
layout fix to legend. Documented legend functions.
r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 Returns true, if legend is attached to chart.
*/
bool QLegend::isAttachedToChart()
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r637 {
Michal Klocek
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r950 return d_ptr->m_attachedToChart;
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r637 }
Michal Klocek
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r950 void QLegend::setOffset(const QPointF& point)
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r643 {
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r950 d_ptr->setOffset(point.x(),point.y());
sauimone
fixed bug in legend marker removing
r643 }
Michal Klocek
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r950 QPointF QLegend::offset() const
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r799 {
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r950 return QPointF(d_ptr->m_offsetX,d_ptr->m_offsetY);
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r799 }
/*!
Michal Klocek
Adds qlegend pimpl...
r950 Sets the visibility of legend background to \a visible
*/
void QLegend::setBackgroundVisible(bool visible)
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r799 {
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r950 if(d_ptr->m_backgroundVisible!=visible)
{
d_ptr->m_backgroundVisible=visible;
update();
}
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r799 }
/*!
Michal Klocek
Adds qlegend pimpl...
r950 Returns the visibility of legend background
*/
bool QLegend::isBackgroundVisible() const
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r799 {
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r950 return d_ptr->m_backgroundVisible;
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r799 }
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r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 \internal \a event see QGraphicsWidget for details
*/
void QLegend::resizeEvent(QGraphicsSceneResizeEvent *event)
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handleThemeChanged slot to legend.
r586 {
Michal Klocek
Adds qlegend pimpl...
r950 const QRectF& rect = QRectF(QPoint(0,0),event->newSize());
QGraphicsWidget::resizeEvent(event);
if(d_ptr->m_rect != rect) {
d_ptr->m_rect = rect;
d_ptr->updateLayout();
}
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r576 }
sauimone
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r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 \internal \a event see QGraphicsWidget for details
*/
void QLegend::hideEvent(QHideEvent *event)
sauimone
First version of legend. Simple markers and serie names. Using drilldown as example for now.
r529 {
Michal Klocek
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r950 QGraphicsWidget::hideEvent(event);
setEnabled(false);
d_ptr->updateLayout();
sauimone
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r565 }
sauimone
layout fix to legend. Documented legend functions.
r724 /*!
Michal Klocek
Adds qlegend pimpl...
r950 \internal \a event see QGraphicsWidget for details
*/
void QLegend::showEvent(QShowEvent *event)
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r565 {
Michal Klocek
Adds qlegend pimpl...
r950 QGraphicsWidget::showEvent(event);
setEnabled(true);
d_ptr->updateLayout();
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r565 }
sauimone
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r529
Michal Klocek
Adds qlegend pimpl...
r950 qreal QLegend::minWidth() const
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more intelligent legend. fixed compiler warning in bar.cpp
r565 {
Michal Klocek
Adds qlegend pimpl...
r950 return d_ptr->m_minWidth;
sauimone
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r529 }
Michal Klocek
Adds qlegend pimpl...
r950 qreal QLegend::minHeight() const
sauimone
handleThemeChanged slot to legend.
r586 {
Michal Klocek
Adds qlegend pimpl...
r950 return d_ptr->m_minHeight;
}
Michal Klocek
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r855
Michal Klocek
Adds qlegend pimpl...
r950 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
QLegendPrivate::QLegendPrivate(ChartPresenter* presenter,QLegend *q):
q_ptr(q),
m_presenter(presenter),
m_markers(new QGraphicsItemGroup(q)),
m_alignment(QLegend::AlignmentTop),
m_offsetX(0),
m_offsetY(0),
m_minWidth(0),
m_minHeight(0),
m_width(0),
m_height(0),
m_attachedToChart(true),
m_backgroundVisible(false)
{
Michal Klocek
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r855
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handleThemeChanged slot to legend.
r586 }
Michal Klocek
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r950 QLegendPrivate::~QLegendPrivate()
{
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First version of legend. Simple markers and serie names. Using drilldown as example for now.
r529
Michal Klocek
Adds qlegend pimpl...
r950 }
void QLegendPrivate::setOffset(qreal x, qreal y)
Michal Klocek
Refactor qledgend handling...
r855 {
sauimone
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r626
Michal Klocek
Refactor qledgend handling...
r855 switch(m_alignment) {
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r716
Michal Klocek
Adds qlegend pimpl...
r950 case QLegend::AlignmentTop:
case QLegend::AlignmentBottom: {
Michal Klocek
Refactor qledgend handling...
r855 if(m_width<=m_rect.width()) return;
sauimone
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r810
Michal Klocek
Adds qlegend pimpl...
r950 if (x != m_offsetX) {
Michal Klocek
Krazy reported errors...
r974 m_offsetX = qBound(qreal(0), x, m_width - m_rect.width());
Michal Klocek
Refactor qledgend handling...
r855 m_markers->setPos(-m_offsetX,m_rect.top());
sauimone
Adaptive layout to legend. Tries to fit all items inside given maximum size
r626 }
Michal Klocek
Refactor qledgend handling...
r855 break;
sauimone
legend layouting change
r616 }
Michal Klocek
Adds qlegend pimpl...
r950 case QLegend::AlignmentLeft:
case QLegend::AlignmentRight: {
sauimone
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r716
Michal Klocek
Refactor qledgend handling...
r855 if(m_height<=m_rect.height()) return;
sauimone
Scrolling logic to legend
r716
Michal Klocek
Adds qlegend pimpl...
r950 if (y != m_offsetY) {
Michal Klocek
Krazy reported errors...
r974 m_offsetY = qBound(qreal(0), y, m_height - m_rect.height());
Michal Klocek
Refactor qledgend handling...
r855 m_markers->setPos(m_rect.left(),-m_offsetY);
sauimone
Scrolling logic to legend
r716 }
Michal Klocek
Refactor qledgend handling...
r855 break;
sauimone
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r716 }
sauimone
split legend layout to vertical and horizontal functions
r810 }
Michal Klocek
Refactor qledgend handling...
r855 }
sauimone
Scrolling logic to legend
r716
Michal Klocek
Adds qlegend pimpl...
r950 void QLegendPrivate::updateLayout()
sauimone
Scrolling logic to legend
r716 {
Michal Klocek
Adds qlegend pimpl...
r950 m_offsetX=0;
Michal Klocek
Refactor qledgend handling...
r855 QList<QGraphicsItem *> items = m_markers->childItems();
if(items.isEmpty()) return;
m_minWidth=0;
m_minHeight=0;
switch(m_alignment) {
Michal Klocek
Adds qlegend pimpl...
r950 case QLegend::AlignmentTop:
case QLegend::AlignmentBottom: {
Michal Klocek
Refactor qledgend handling...
r855 QPointF point = m_rect.topLeft();
m_width = 0;
foreach (QGraphicsItem *item, items) {
item->setPos(point.x(),m_rect.height()/2 -item->boundingRect().height()/2);
const QRectF& rect = item->boundingRect();
qreal w = rect.width();
m_minWidth=qMax(m_minWidth,w);
m_minHeight=qMax(m_minHeight,rect.height());
m_width+=w;
point.setX(point.x() + w);
}
Michal Klocek
Adds qlegend pimpl...
r950 if(m_width<m_rect.width()) {
Michal Klocek
Refactor qledgend handling...
r855 m_markers->setPos(m_rect.width()/2-m_width/2,m_rect.top());
Michal Klocek
Adds qlegend pimpl...
r950 }
else {
Michal Klocek
Refactor qledgend handling...
r855 m_markers->setPos(m_rect.topLeft());
}
m_height=m_minHeight;
}
break;
Michal Klocek
Adds qlegend pimpl...
r950 case QLegend::AlignmentLeft:
case QLegend::AlignmentRight: {
Michal Klocek
Refactor qledgend handling...
r855 QPointF point = m_rect.topLeft();
m_height = 0;
foreach (QGraphicsItem *item, items) {
item->setPos(point);
const QRectF& rect = item->boundingRect();
qreal h = rect.height();
m_minWidth=qMax(m_minWidth,rect.width());
m_minHeight=qMax(m_minHeight,h);
m_height+=h;
point.setY(point.y() + h);
}
Michal Klocek
Adds qlegend pimpl...
r950 if(m_height<m_rect.height()) {
Michal Klocek
Refactor qledgend handling...
r855 m_markers->setPos(m_rect.left(),m_rect.height()/2-m_height/2);
Michal Klocek
Adds qlegend pimpl...
r950 }
else {
Michal Klocek
Refactor qledgend handling...
r855 m_markers->setPos(m_rect.topLeft());
}
m_width=m_minWidth;
}
break;
}
sauimone
Scrolling logic to legend
r716
Michal Klocek
Adds qlegend pimpl...
r950 m_presenter->updateLayout();
sauimone
Scrolling logic to legend
r716 }
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 void QLegendPrivate::handleSeriesAdded(QAbstractSeries *series, Domain *domain)
Michal Klocek
Refactor qledgend handling...
r855 {
Michal Klocek
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r950 Q_UNUSED(domain)
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r716
Michal Klocek
Adds qlegend pimpl...
r950 QList<LegendMarker*> markers = series->d_ptr->createLegendMarker(q_ptr);
foreach(LegendMarker* marker , markers)
m_markers->addToGroup(marker);
sauimone
Scrolling logic to legend
r716
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 if(series->type() == QAbstractSeries::SeriesTypePie)
Michal Klocek
Adds trivial legend handling for slices when removed or added
r956 {
QPieSeries *pieSeries = static_cast<QPieSeries *>(series);
QObject::connect(pieSeries,SIGNAL(added(QList<QPieSlice*>)),this,SLOT(handleUpdateSeries()));
QObject::connect(pieSeries,SIGNAL(removed(QList<QPieSlice*>)),this,SLOT(handleUpdateSeries()));
}
Michal Klocek
Refactor qledgend handling...
r855 updateLayout();
sauimone
Scrolling logic to legend
r716 }
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 void QLegendPrivate::handleSeriesRemoved(QAbstractSeries *series)
sauimone
Scrolling logic to legend
r716 {
Michal Klocek
Adds qlegend pimpl...
r950
QList<QGraphicsItem *> items = m_markers->childItems();
Michal Klocek
Adds trivial legend handling for slices when removed or added
r956 foreach (QGraphicsItem *markers, items) {
LegendMarker *marker = static_cast<LegendMarker*>(markers);
if (marker->series() == series) {
delete marker;
}
}
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 if(series->type() == QAbstractSeries::SeriesTypePie)
Michal Klocek
Adds trivial legend handling for slices when removed or added
r956 {
QPieSeries *pieSeries = static_cast<QPieSeries *>(series);
QObject::disconnect(pieSeries,SIGNAL(added(QList<QPieSlice*>)),this,SLOT(handleUpdateSeries()));
QObject::disconnect(pieSeries,SIGNAL(removed(QList<QPieSlice*>)),this,SLOT(handleUpdateSeries()));
}
Michal Klocek
Adds qlegend pimpl...
r950
Michal Klocek
Refactor qledgend handling...
r855 updateLayout();
}
sauimone
layout fix to legend. Documented legend functions.
r724
Michal Klocek
Adds trivial legend handling for slices when removed or added
r956 void QLegendPrivate::handleUpdateSeries()
{
//TODO: reimplement to be optimal
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 QAbstractSeries* series = qobject_cast<QAbstractSeries *> (sender());
Michal Klocek
Adds trivial legend handling for slices when removed or added
r956 Q_ASSERT(series);
handleSeriesRemoved(series);
handleSeriesAdded(series,0);
}
sauimone
framework for legend
r524 #include "moc_qlegend.cpp"
Michal Klocek
Adds qlegend pimpl...
r950 #include "moc_qlegend_p.cpp"
Tero Ahola
Code review: Fixed simple issues in Bar and Legend
r737
sauimone
framework for legend
r524 QTCOMMERCIALCHART_END_NAMESPACE