386 lines
12 KiB
C++
386 lines
12 KiB
C++
#ifndef TRANSPARENTDRAGGABLERECT_H
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#define TRANSPARENTDRAGGABLERECT_H
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#include <QObject>
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#include "qmycustomplot.h"
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#include <QString>
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#include <QMenu>
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#pragma execution_character_set("utf-8") // 强制指定执行字符集为 UTF-8
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class TransparentDraggableRect : public QObject
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{
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Q_OBJECT
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public:
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explicit TransparentDraggableRect(QMyCustomPlot *parentPlot, double minWidth = 1.0, QString strTitle = "")
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: QObject(parentPlot), mPlot(parentPlot), mstrTitle(strTitle), mMinWidth(minWidth)
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{
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initRect();
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}
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~TransparentDraggableRect() {
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if(mPlot) {
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// mPlot->removeItem(mRect);
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// mPlot->removeItem(mLeftHandle);
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// mPlot->removeItem(mRightHandle);
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}
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}
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//设置最小宽度
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void setMinWidth(double minWidth){
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mMinWidth = minWidth;
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}
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//设置标题
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void setTitle(QString strTitle){
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mstrTitle = strTitle;
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// mItemTitle->setText(mstrTitle);
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// mPlot->replot();
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}
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// 设置矩形范围
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void setRange(double left_Low, double right_Hight) {
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if(left_Low >= right_Hight) return;
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double lY1 = mPlot->yAxis->range().lower;//+10
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double lY2 = mPlot->yAxis->range().upper;
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mRect->topLeft->setCoords(left_Low, lY1);
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mRect->bottomRight->setCoords(right_Hight, lY2);
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mPixmap->topLeft->setCoords(left_Low, lY1);
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mPixmap->bottomRight->setCoords(right_Hight, lY2);
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//mRect->topLeft->setCoords(left, mPlot->yAxis->range().upper);
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//mRect->bottomRight->setCoords(right, mPlot->yAxis->range().lower);
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updateHandles();
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mPlot->replot();
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}
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// 获取当前范围
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QCPRange getRange() const {
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return QCPRange(mRect->topLeft->coords().x(), mRect->bottomRight->coords().x());
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}
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// 设置矩形颜色
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void setColor(const QColor &color) {
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mRect->setBrush(QBrush(color));
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mRect->setPen(QPen(color.darker()));
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mPlot->replot();
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}
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// 删除框图
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void deleteRect() {
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if(mPlot) {
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// mRect->deleteLater();
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// mLeftHandle->deleteLater();
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// mRightHandle->deleteLater();
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// mPixmap->deleteLater();
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mPlot->removeItem(mRect);
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mPlot->removeItem(mLeftHandle);
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mPlot->removeItem(mRightHandle);
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mPlot->removeItem(mPixmap);
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mPlot->replot();
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this->deleteLater();
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//
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// //避免二次绘制框图
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// mPlot->m_bDrawRect = false;
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// mDragMode = DragNone;
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// //取消选中框
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// mPlot->selectionRect()->cancel();
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// mPlot->replot();
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// mPlot->selectionRect()->mActive=true;
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}
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}
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signals:
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void rangeChanged(QCPRange newRange);
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private:
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void initRect() {
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// 创建透明矩形
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mRect = new QCPItemRect(mPlot);
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mRect->setLayer("overlay"); // 确保在最上层
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mRect->setBrush(QBrush(QColor(100, 100, 255, 50))); // 半透明蓝色
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mRect->setPen(QPen(QColor(70, 70, 255, 200)));
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// 创建左右边界控制点
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mLeftHandle = new QCPItemRect(mPlot);
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mLeftHandle->setLayer("overlay");
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mLeftHandle->setBrush(QBrush(Qt::red));
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mLeftHandle->setPen(QPen(Qt::darkRed));
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mRightHandle = new QCPItemRect(mPlot);
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mRightHandle->setLayer("overlay");
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mRightHandle->setBrush(QBrush(Qt::red));
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mRightHandle->setPen(QPen(Qt::darkRed));
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// 设置初始位置
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//double center = mPlot->xAxis->range().center();
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// setRange(center - 10, center + 10);
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// 连接鼠标事件
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connect(mPlot, &QCustomPlot::mousePress, this, &TransparentDraggableRect::onMousePress);
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connect(mPlot, &QCustomPlot::mouseMove, this, &TransparentDraggableRect::onMouseMove);
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connect(mPlot, &QCustomPlot::mouseRelease, this, &TransparentDraggableRect::onMouseRelease);
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mPixmap = new QCPItemPixmap(mPlot);
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mPixmap->setPixmap(QPixmap(":/image/file.png")); // 设置图片
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mPixmap->setScaled(true, Qt::IgnoreAspectRatio); // 设置缩放方式
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mPixmap->setLayer("overlay"); // 确保在最上层
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// mItemTitle = new QCPItemText(mPlot);
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// mItemTitle->setText(mstrTitle);
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// //mItemTitle->setBrush(QBrush(Qt::red));
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// mItemTitle->setFont(QFont("Arial", 12, QFont::Bold));
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// mItemTitle->setColor(Qt::black);
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// mItemTitle->setPositionAlignment(Qt::AlignTop | Qt::AlignHCenter);
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// mItemTitle->position->setType(QCPItemPosition::ptAxisRectRatio);
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// mItemTitle->position->setCoords(0.5, 0);
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// mItemTitle->setLayer("overlay");
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}
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void updateHandles() {
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// 左边界矩形控制点
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mLeftHandle->topLeft->setParentAnchor(mRect->topLeft);
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mLeftHandle->bottomRight->setParentAnchor(mRect->topRight);//(mRect->bottomLeft);
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mLeftHandle->topLeft->setCoords(-5, 5); // 矩形大小
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mLeftHandle->bottomRight->setCoords(5, -5); // 矩形大小
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// 右边界矩形控制点
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mRightHandle->topLeft->setParentAnchor(mRect->bottomLeft);
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mRightHandle->bottomRight->setParentAnchor(mRect->bottomRight);
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mRightHandle->topLeft->setCoords(-5, 5); // 矩形大小
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mRightHandle->bottomRight->setCoords(5, -5); // 矩形大小
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}
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private slots:
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void onDelRect()
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{
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//mDragMode = DragNone;
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//删除框图
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deleteRect();
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}
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// 事件过滤器处理函数
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// bool eventFilter(QObject* object, QEvent* event) {
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// if (event->type() == QEvent::MouseButtonPress) {
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// // 拦截操作
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// return true; // 阻止事件传递
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//// if (object == action) {
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//// // 验证权限
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//// if (1) {
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//// // 允许操作
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//// action->trigger();
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//// } else {
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//// // 拦截操作
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//// return true; // 阻止事件传递
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//// }
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//// }
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// }
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// return false; // 默认不拦截其他事件
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// }
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void onMousePress(QMouseEvent *event) {
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if(event->button() != Qt::LeftButton)
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{
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double y = mPlot->xAxis->pixelToCoord(event->pos().y());//x轴展示深度
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QCPRange currentRange = getRange();
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if(mLeftHandle->selectTest(event->pos(), false) < 5) {
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mDragMode = DragNone;
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}
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else if(mRightHandle->selectTest(event->pos(), false) < 5) {
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mDragMode = DragNone;
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}
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//else if(x >= currentRange.lower && x <= currentRange.upper) {
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else if(y >= currentRange.lower && y <= currentRange.upper) {
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mDragMode = DragNone;
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}
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else {
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mDragMode = DragNone;
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return;
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}
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//event->accept();
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QMenu menu(nullptr);
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QAction *delAction = menu.addAction("删除框图");
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//delAction->installEventFilter(this);
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connect(delAction, &QAction::triggered, this, &TransparentDraggableRect::onDelRect);
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// QAction* pItem = menu.exec(event->globalPos());
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// if(pItem == delAction)
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// {
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// //event->accept();
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// int ii=0;
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// ii++;
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// }
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menu.exec(event->globalPos());
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return;
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}
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event->accept();
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// 检查点击了哪个部分
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//double x = mPlot->xAxis->pixelToCoord(event->pos().x());
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//double y = mPlot->yAxis->pixelToCoord(event->pos().y());
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double y = mPlot->xAxis->pixelToCoord(event->pos().y());//x轴展示深度
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QCPRange currentRange = getRange();
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if(mLeftHandle->selectTest(event->pos(), false) < 5) {
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mDragMode = DragLeft;
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}
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else if(mRightHandle->selectTest(event->pos(), false) < 5) {
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mDragMode = DragRight;
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}
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//else if(x >= currentRange.lower && x <= currentRange.upper) {
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else if(y >= currentRange.lower && y <= currentRange.upper) {
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mDragMode = DragRect;
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}
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else {
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mDragMode = DragNone;
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return;
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}
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//mDragStartX = x;
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mDragStartY = y;
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mDragStartRange = currentRange;
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}
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void onMouseMove(QMouseEvent *event) {
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if(mDragMode == DragNone) return;
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event->accept();
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//double x = mPlot->xAxis->pixelToCoord(event->pos().x());
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//double dx = x - mDragStartX;
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double y = mPlot->xAxis->pixelToCoord(event->pos().y());
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double dy = y - mDragStartY;
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QCPRange newRange = mDragStartRange;
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switch(mDragMode) {
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case DragLeft: {
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//double proposedLeft = mDragStartRange.lower + dx;
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double proposedLeft = mDragStartRange.lower + dy;
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// 确保不超出轴范围且不使宽度小于最小值
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newRange.lower = qBound(
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mPlot->xAxis->range().lower,
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proposedLeft,
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mDragStartRange.upper - mMinWidth);
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break;
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}
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case DragRight: {
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//double proposedRight = mDragStartRange.upper + dx;
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double proposedRight = mDragStartRange.upper + dy;
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// 确保不超出轴范围且不使宽度小于最小值
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newRange.upper = qBound(
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mDragStartRange.lower + mMinWidth,
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proposedRight,
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mPlot->xAxis->range().upper);
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break;
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}
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case DragRect: {
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double width = mDragStartRange.size();
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//double center = mDragStartRange.center() + dx;
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double center = mDragStartRange.center() + dy;
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newRange.lower = center - width/2;
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newRange.upper = center + width/2;
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// 检查是否超出轴范围
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QCPRange axisRange = mPlot->xAxis->range();
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if(newRange.lower < axisRange.lower) {
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newRange.lower = axisRange.lower;
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newRange.upper = newRange.lower + width;
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}
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else if(newRange.upper > axisRange.upper) {
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newRange.upper = axisRange.upper;
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newRange.lower = newRange.upper - width;
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}
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break;
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}
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default:
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break;
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}
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//取整数(方便显示统计，左右边界整数显示。)
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newRange.lower = (int)newRange.lower;
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QCPRange rangeByFile = mPlot->xAxis->range();
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if (std::fabs(rangeByFile.upper - (int)newRange.upper) >= 1.0)
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{
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newRange.upper = (int)newRange.upper;
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}
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// 最终确保宽度不小于最小值（针对整体拖动的情况）
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if(newRange.size() < mMinWidth) {
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if(mDragMode == DragRect) {
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// 如果是整体拖动，保持中心点不变
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double center = newRange.center();
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newRange.lower = center - mMinWidth/2;
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newRange.upper = center + mMinWidth/2;
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} else {
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// 如果是边界拖动，强制设置最小宽度
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if(mDragMode == DragLeft) {
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newRange.lower = newRange.upper - mMinWidth;
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} else if(mDragMode == DragRight) {
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newRange.upper = newRange.lower + mMinWidth;
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}
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}
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}
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setRange(newRange.lower, newRange.upper);
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}
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void onMouseRelease(QMouseEvent *event) {
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if(event->button() == Qt::LeftButton && mDragMode != DragNone) {
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event->accept();
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//避免二次绘制框图
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mPlot->m_bDrawRect = false;
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//emit rangeChanged(getRange());
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mDragMode = DragNone;
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//取消选中状态
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// QCPDataSelection emptySelection;
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// mPlot->graph(0)->setSelection(emptySelection);
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// mPlot->replot();
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//取消选中框
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mPlot->selectionRect()->cancel();
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mPlot->replot();
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mPlot->selectionRect()->mActive=true;
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}
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}
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private:
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QMyCustomPlot *mPlot;
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QCPItemRect *mRect;
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QCPItemRect *mLeftHandle;
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QCPItemRect *mRightHandle;
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QCPItemPixmap *mPixmap;
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//QCPItemText *mItemTitle;
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QString mstrTitle;
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enum DragMode { DragNone, DragLeft, DragRight, DragRect };
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DragMode mDragMode = DragNone;
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//double mDragStartX = 0;
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double mDragStartY = 0;
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QCPRange mDragStartRange;
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// 添加最小宽度成员变量
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double mMinWidth;
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};
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#endif // TRANSPARENTDRAGGABLERECT_H
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