TrainCamp_yanchaoyang_Two/IntegratedPlatform/hmiwidget.cpp

#include "hmiwidget.h"
#include <QGraphicsSceneMouseEvent>
#include <QCursor>

ResizableRectangle::ResizableRectangle(qreal x, qreal y, qreal w, qreal h)
    : QGraphicsRectItem(x, y, w, h), resizing(false)
{
    setFlag(QGraphicsItem::ItemIsMovable, true);
    setFlag(QGraphicsItem::ItemIsSelectable, true);
    setCursor(Qt::ArrowCursor);
}

void ResizableRectangle::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    // 检查是否在调整区域
    if (rect().bottomRight().x() - 10 <= event->pos().x() &&
        rect().bottomRight().y() - 10 <= event->pos().y()) {
        resizing = true;
        setCursor(Qt::SizeFDiagCursor);
    } else {
        // 传递事件给基类处理移动
        resizing = false;
        setCursor(Qt::SizeAllCursor);
        QGraphicsRectItem::mousePressEvent(event);
    }
}

void ResizableRectangle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
    if (resizing) {
        // 调整大小逻辑
        QRectF newRect = rect();
        newRect.setBottomRight(event->pos());
        setRect(newRect);
    } else {
        // 传递事件给基类处理移动
        QGraphicsRectItem::mouseMoveEvent(event);
    }
}

void ResizableRectangle::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
    resizing = false;
    setCursor(Qt::ArrowCursor);
    QGraphicsRectItem::mouseReleaseEvent(event);
}

// -------------------- ResizableEllipse --------------------

ResizableEllipse::ResizableEllipse(qreal x, qreal y, qreal w, qreal h)
    : QGraphicsEllipseItem(x, y, w, h), resizing2(false)
{
    setFlag(QGraphicsItem::ItemIsMovable, true);
    setFlag(QGraphicsItem::ItemIsSelectable, true);
    setCursor(Qt::ArrowCursor);
}

void ResizableEllipse::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    QRectF ellipseRect = rect();
    if (ellipseRect.bottomRight().x() - 10 <= event->pos().x() &&
        ellipseRect.bottomRight().y() - 10 <= event->pos().y()) {
        resizing2 = true;
        setCursor(Qt::SizeFDiagCursor);
    } else {
        // 传递事件给基类处理移动
        resizing2 = false;
        setCursor(Qt::SizeAllCursor);
        QGraphicsEllipseItem::mousePressEvent(event);
    }
}

void ResizableEllipse::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
    if (resizing2) {
        QRectF newRect = rect();
        newRect.setBottomRight(event->pos());
        setRect(newRect);
    } else {
        // 传递事件给基类处理移动
        QGraphicsEllipseItem::mouseMoveEvent(event);
    }
}

void ResizableEllipse::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
    resizing2 = false;
    setCursor(Qt::ArrowCursor);
    QGraphicsEllipseItem::mouseReleaseEvent(event);
}