187 lines
6.3 KiB
C++
187 lines
6.3 KiB
C++
#include "frmmultiaxes.h"
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#include "ui_frmmultiaxes.h"
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#include "qfile.h"
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#include "qdebug.h"
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frmMultiAxes::frmMultiAxes(QWidget *parent) : QWidget(parent), ui(new Ui::frmMultiAxes)
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{
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ui->setupUi(this);
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this->initForm();
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}
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frmMultiAxes::~frmMultiAxes()
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{
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delete ui;
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}
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void frmMultiAxes::initForm()
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{
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//Y坐标轴的数量
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count = 4;
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this->initPlot(ui->customPlot1, QCPAxis::atLeft, count);
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this->initPlot(ui->customPlot2, QCPAxis::atRight, count);
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this->loadPlot(ui->customPlot1, QCPAxis::atLeft, count);
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this->loadPlot(ui->customPlot2, QCPAxis::atRight, count);
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for (int i = 0; i < count; ++i) {
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this->loadData(ui->customPlot1, i);
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this->loadData(ui->customPlot2, i);
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}
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}
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void frmMultiAxes::selectionChangedByUser()
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{
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//联动处理 坐标轴、刻度尺、画布曲线 选中一样则选中所有
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QCustomPlot *customPlot = (QCustomPlot *)sender();
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QCPAxis::AxisType type;
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if (customPlot == ui->customPlot1) {
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type = QCPAxis::atLeft;
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} else if (customPlot == ui->customPlot2) {
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type = QCPAxis::atRight;
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}
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int selecteIndex = -1;
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for (int i = 0; i < count; ++i) {
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//获取对应的坐标轴
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QCPAxis *axis = customPlot->axisRect()->axis(type, i);
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//获取对应的画布曲线
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QCPGraph *graph = customPlot->graph(i);
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//判断 坐标轴、刻度尺、画布曲线 是否选中了一个
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if (axis->selectedParts().testFlag(QCPAxis::spAxis) || axis->selectedParts().testFlag(QCPAxis::spTickLabels) || graph->selected()) {
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//设置坐标轴、刻度尺同时选中
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axis->setSelectedParts(QCPAxis::spAxis | QCPAxis::spTickLabels);
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//设置画布曲线选中
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graph->setSelection(QCPDataSelection(graph->data()->dataRange()));
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selecteIndex = i;
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break;
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}
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}
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//存在选中则设置当前选中的可拖动和缩放
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//不存在则设置所有的可拖动和缩放
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QCPAxisRect *axisRect = customPlot->axisRect();
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if (selecteIndex >= 0) {
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QCPAxis *axis = axisRect->axis(type, selecteIndex);
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axisRect->setRangeDragAxes(customPlot->xAxis, axis);
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axisRect->setRangeZoomAxes(customPlot->xAxis, axis);
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} else {
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#ifndef qcustomplot_v1_3
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axisRect->setRangeDragAxes(axisRect->axes());
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axisRect->setRangeZoomAxes(axisRect->axes());
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#endif
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}
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}
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void frmMultiAxes::initPlot(QCustomPlot *customPlot, const QCPAxis::AxisType &type, int count)
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{
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//选中对应的坐标轴或者画布等
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connect(customPlot, SIGNAL(selectionChangedByUser()), this, SLOT(selectionChangedByUser()));
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//connect(customPlot->yAxis2, SIGNAL(rangeChanged(QCPRange)), customPlot->yAxis, SLOT(setRange(QCPRange)));
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if (type == QCPAxis::atLeft) {
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customPlot->yAxis->setVisible(true);
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customPlot->yAxis2->setVisible(false);
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} else if (type == QCPAxis::atRight) {
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customPlot->yAxis->setVisible(false);
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customPlot->yAxis2->setVisible(true);
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}
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//添加多个坐标轴
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for (int i = 0; i < count - 1; ++i) {
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customPlot->axisRect()->addAxis(type);
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}
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//设置边距、范围值、网格可见、刻度数量等
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for (int i = 0; i < count; ++i) {
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QCPAxis *axis = customPlot->axisRect()->axis(type, i);
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axis->setPadding(10);
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axis->setRange(0, 1);
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axis->grid()->setVisible(true);
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//axis->grid()->setSubGridVisible(true);
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axis->ticker()->setTickCount(10);
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}
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//设置初始范围值
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customPlot->xAxis->setRange(0.5, 10.5);
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//设置刻度数量
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customPlot->xAxis->ticker()->setTickCount(10);
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//设置可拖动和缩放选中等
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customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectAxes | QCP::iSelectPlottables);
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}
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void frmMultiAxes::loadPlot(QCustomPlot *customPlot, const QCPAxis::AxisType &type, int count)
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{
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//颜色集合
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QList<QColor> colors;
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colors << QColor(211, 78, 78) << QColor(29, 185, 242) << QColor(170, 162, 119) << QColor(255, 192, 1);
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colors << QColor(0, 176, 180) << QColor(0, 113, 193) << QColor(255, 192, 0);
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colors << QColor(72, 103, 149) << QColor(185, 87, 86) << QColor(0, 177, 125);
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colors << QColor(214, 77, 84) << QColor(71, 164, 233) << QColor(34, 163, 169);
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colors << QColor(59, 123, 156) << QColor(162, 121, 197) << QColor(72, 202, 245);
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colors << QColor(0, 150, 121) << QColor(111, 9, 176) << QColor(250, 170, 20);
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for (int i = 0; i < count; ++i) {
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//分配一种颜色
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QColor color;
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if (i < colors.count()) {
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color = colors.at(i);
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}
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QPen pen(color);
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QCPAxis *axis = customPlot->axisRect()->axis(type, i);
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//刻度文本颜色
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axis->setTickLabelColor(color);
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//刻度线条颜色
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axis->setBasePen(pen);
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//大刻度尺颜色
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axis->setTickPen(pen);
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//小刻度尺颜色
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axis->setSubTickPen(pen);
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//画布线条颜色
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QCPGraph *graph = customPlot->addGraph(customPlot->xAxis, axis);
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graph->setPen(pen);
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}
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}
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void frmMultiAxes::loadData(QCustomPlot *customPlot, int index)
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{
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//下面演示从文本文件读取数据，具体格式可以自行打开文件查看
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//真实场景自己准备数据调用 setData 即可
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int flag = index > 2 ? 0 : index;
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QString fileName = QString(":/data/data%1.txt").arg(flag);
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QFile file(fileName);
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if (file.open(QFile::ReadOnly | QIODevice::Text)) {
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QString value = file.readAll();
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file.close();
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QVector<double> keys, values;
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QStringList list = value.split(" ");
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int len = list.length();
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//如果不是2的倍数则长度要减去1
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if (len % 2 != 0) {
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len = (len - 1);
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}
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for (int i = 0; i < len / 2; i++) {
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keys << i;
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}
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//每两个16进制数字组合成一个数字
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for (int i = 0; i < len; i = i + 2) {
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QString strHex = QString("%1%2").arg(list.at(i)).arg(list.at(i + 1));
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qint16 value = strHex.toUShort(NULL, 16);
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values << value;
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}
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//获取对应画布
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QCPGraph *graph = customPlot->graph(index);
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//设置数据到画布
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graph->setData(keys, values);
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//自适应坐标轴
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graph->rescaleAxes();
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}
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}
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