qt柱状图_饼状图
tip：鼠标悬浮提示自定义信息
barchart.h
#ifndef BARCHART_H
#define BARCHART_H
#include barchart.h
#include "barchart.h"
#include
m_barSetList<<set0;
QBarSeries *series = new QBarSeries();
series->setLabelsPosition(QAbstractBarSeries::LabelsInsideEnd); // 设置数据系列标签的位置于数据柱内测上方
series->setLabelsVisible(true); // 设置显示数据系列标签
installEventFilter(series);
connect(series, SIGNAL(hovered(bool, int, QBarSet*)), this, SLOT(sltTooltip(bool, int, QBarSet*)));
series->append(set0);
// series->append(set1);
chart->addSeries(series);
chart->setTitle(title);
chart->setTitleFont(QFont("song", 12, QFont::Bold));
chart->setAnimationOptions(QChart::SeriesAnimations);
for(int i=0;i<list.size();i++)
{
categories<<QString("检查项%1").arg(QString::number(i+1));
}
QBarCategoryAxis *axis = new QBarCategoryAxis();
axis->append(categories);
chart->createDefaultAxes();
chart->setAxisX(axis, series);
chart->legend()->setVisible(true);
chart->legend()->setAlignment(Qt::AlignBottom);
QChartView *chartView = new QChartView(chart);
chartView->setRenderHint(QPainter::Antialiasing);
return chartView;
}
void barChart::sltTooltip(bool status, int index, QBarSet *barset)
{
if (m_tooltip == 0)
m_tooltip = new Callout(chart);
if (status) {
double indexbarset=m_barSetList.indexOf(barset)-1;//m_categories是x轴坐标
indexbarset=indexbarset/6;
m_tooltip->setText(topTipList.at(index));
QPointF point(index+indexbarset, barset->at(index));
m_tooltip->setAnchor(point);
m_tooltip->setZValue(11);
m_tooltip->updateGeometry();
m_tooltip->show();
}
else {
m_tooltip->hide();
}
}
//bool barChart::eventFilter(QObject *watched, QEvent *event)
//{
// if(watched == this)
// {
// if(event->type() == QEvent::Enter)
// {
// qDebug()<
// return true;
// }
// else if(event->type() == QEvent::Leave)
// {
// qDebug()<
// return true;
// }
// else if(event->type() == QEvent::MouseButtonPress)
// {
// qDebug()<
// return true;
// }
// else if(event->type() == QEvent::MouseButtonRelease)
// {
// qDebug()<
// return true;
// }
// }
// return QWidget::eventFilter(watched, event);
//}
callout.h
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef CALLOUT_H
#define CALLOUT_H
#include callout.cpp
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "callout.h"
#include
m_text = text;
QFontMetrics metrics(QFont("song",10));
m_textRect = metrics.boundingRect(QRect(0, 0, 400, text.size()*4), Qt::AlignLeft, QString("tooltip"));
m_textRect.translate(5, 5);
m_textRect.setWidth(50);
m_textRect.setHeight(text.size()*4);
prepareGeometryChange();
m_rect = m_textRect.adjusted(-5, -5, 5, 5);
}
void Callout::setAnchor(QPointF point)
{
// qDebug()<
m_anchor = point;
}
void Callout::updateGeometry()
{
prepareGeometryChange();
setPos(m_chart->mapToPosition(m_anchor) + QPoint(10, -50));
}