TrainCamp_yanchaoyang_Two/untitled/hmidocument.cpp

#include "hmidocument.h"
#include "graphicsitems.h"
#include <QGraphicsItem>
#include <QGraphicsSceneHoverEvent>
#include <QMouseEvent>
#include <QMenu>
#include <QAction>
#include <QDataStream>
#include <QColorDialog>
#include <QDialog>
#include <QFormLayout>
#include <QLineEdit>
#include <QPushButton>
#include <QDialogButtonBox>
#include <QMimeData>
#include <QDragEnterEvent>
#include <QDropEvent>
#include <QDebug>
#include <QFileInfo>
#include <QVBoxLayout>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>

HMIDocument::HMIDocument(QWidget *parent)
    : BaseDocument(HMI, parent),
      m_title("未命名HMI"),
      m_canDrawEllipse(false),
      m_canDrawRectangle(false),
      m_lastPastePos(0, 0)
{
    // 创建绘图场景 - 固定大小
    m_scene = new QGraphicsScene(this);
    m_scene->setSceneRect(0, 0, 1000, 600);  // 固定画布尺寸
    m_scene->setBackgroundBrush(QBrush(Qt::lightGray));

    // 创建视图 - 关键修改：使用滚动区域包装
    m_scrollArea = new QScrollArea(this);
    m_scrollArea->setWidgetResizable(false); // 禁止内容自动调整大小
    //m_scrollArea->setFrameShape(QFrame::NoFrame); // 无边框

    // 创建真正的视图部件
    m_view = new QGraphicsView(m_scene, this);
    m_view->setRenderHint(QPainter::Antialiasing);
    m_view->setDragMode(QGraphicsView::RubberBandDrag);
    m_view->setAcceptDrops(true);
    m_view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 隐藏自身滚动条
    m_view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    // 关键：视图固定大小与场景匹配
    m_view->setMinimumSize(1000, 600);
    m_view->setMaximumSize(1000, 600);
    m_view->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
    m_view->viewport()->installEventFilter(this);

    // 添加视图到滚动区域
    m_scrollArea->setWidget(m_view);
    m_scrollArea->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    // 设置主布局
    auto layout = new QVBoxLayout(this);
    layout->setContentsMargins(0, 0, 0, 0);
    layout->addWidget(m_scrollArea);
    setLayout(layout);
}

HMIDocument::~HMIDocument()
{
}

// 事件过滤器（处理绘图、拖拽等事件）
bool HMIDocument::eventFilter(QObject *obj, QEvent *event)
{
    if (obj != m_view->viewport())
    {
        return QWidget::eventFilter(obj, event);
    }

    // 鼠标按下事件（绘制图形）
    if (event->type() == QEvent::MouseButtonPress)
    {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
        setModified(true);
        if (mouseEvent->button() == Qt::RightButton)
        {
            showContextMenu(mouseEvent->globalPos());// 右键菜单
            return true;
        }
        if (mouseEvent->button() == Qt::LeftButton)
        {
            QPointF scenePos = m_view->mapToScene(mouseEvent->pos());
            QGraphicsItem *item = m_scene->itemAt(scenePos, m_view->transform());

            // 如果点击空白区域且有绘制标志，创建图形
            if (!item) {
                if (m_canDrawEllipse)
                {
                    createShape("ellipse", scenePos);
                    resetDrawFlags();
                }
                else if (m_canDrawRectangle)
                {
                    createShape("rectangle", scenePos);
                    resetDrawFlags();
                }
            }
        }
    }

    // 拖拽事件（从工具栏拖拽绘制）
    if (event->type() == QEvent::DragEnter)
    {
        QDragEnterEvent *dragEvent = static_cast<QDragEnterEvent*>(event);
        dragEvent->acceptProposedAction();
        return true;
    }
    if (event->type() == QEvent::DragMove)
    {
        static_cast<QDragMoveEvent*>(event)->acceptProposedAction();
        return true;
    }
    if (event->type() == QEvent::Drop)
    {
        QDropEvent *dropEvent = static_cast<QDropEvent*>(event);
        const QMimeData *mimeData = dropEvent->mimeData();
        QPointF scenePos = m_view->mapToScene(dropEvent->pos());

        // 使用QMimeData
        if (mimeData && mimeData->hasText())
        {
            createShape(mimeData->text(), scenePos);
            resetDrawFlags();//重置防止拖拽后再次点击生成
        }
        dropEvent->acceptProposedAction();
        return true;
    }

    return QWidget::eventFilter(obj, event);
}

void HMIDocument::createShape(const QString& type, const QPointF &pos)
{
    m_scene->clearSelection();
    if (type == "指示灯" || type == "ellipse")
    {
        ResizableEllipse *ellipse = new ResizableEllipse(pos.x(), pos.y(), 50, 50);
        ellipse->setBrush(QBrush(Qt::red));
        ellipse->setPen(QPen(Qt::black, 1));
        m_scene->addItem(ellipse);
        ellipse->setSelected(true);
    }
    else if (type == "按钮" || type == "rectangle")
    {
        ResizableRectangle *rect = new ResizableRectangle(pos.x(), pos.y(), 100, 50);
        rect->setBrush(QBrush(Qt::yellow));
        rect->setPen(QPen(Qt::black, 1));
        m_scene->addItem(rect);
        rect->setSelected(true);
    }
    setModified(true);
}

// 重置绘制标志
void HMIDocument::resetDrawFlags()
{
    m_canDrawEllipse = false;
    m_canDrawRectangle = false;
}

// 右键菜单
void HMIDocument::showContextMenu(QPoint globalPos)
{
    QPoint viewportPos = m_view->mapFromGlobal(globalPos);
    QPointF scenePos = m_view->mapToScene(viewportPos);
    QGraphicsItem *clickedItem = m_scene->itemAt(scenePos, m_view->transform());

    QMenu menu(this);

    if (!clickedItem)
    {
        // 空白区域：仅显示粘贴
        QAction *pasteAction = menu.addAction("粘贴");
        pasteAction->setEnabled(!m_copiedItemsData.isEmpty());
        connect(pasteAction, &QAction::triggered, this, &HMIDocument::pasteItems);
    }
    else
    {
        // 选中图形：显示完整菜单
        QAction *propAction = menu.addAction("属性");
        QAction *copyAction = menu.addAction("复制");
        QAction *pasteAction = menu.addAction("粘贴");
        QAction *deleteAction = menu.addAction("删除");
        QAction *onAction = menu.addAction("置为ON");
        QAction *offAction = menu.addAction("置为OFF");

        pasteAction->setEnabled(!m_copiedItemsData.isEmpty());

        connect(propAction, &QAction::triggered, this, &HMIDocument::showItemProperties);
        connect(copyAction, &QAction::triggered, this, &HMIDocument::copySelectedItems);
        connect(pasteAction, &QAction::triggered, this, &HMIDocument::pasteItems);
        connect(deleteAction, &QAction::triggered, this, &HMIDocument::deleteSelectedItems);

        // ON/OFF动作（针对指示灯和按钮）
        connect(onAction, &QAction::triggered, [=]() {
            if (auto ellipse = dynamic_cast<ResizableEllipse*>(clickedItem)) {
                ellipse->setBrush(ellipse->onColor());
            } else if (auto rect = dynamic_cast<ResizableRectangle*>(clickedItem)) {
                rect->setBrush(rect->pressedColor());
            }
        });
        connect(offAction, &QAction::triggered, [=]() {
            if (auto ellipse = dynamic_cast<ResizableEllipse*>(clickedItem)) {
                ellipse->setBrush(ellipse->offColor());
            } else if (auto rect = dynamic_cast<ResizableRectangle*>(clickedItem)) {
                rect->setBrush(rect->releasedColor());
            }
        });
    }

    menu.exec(globalPos + QPoint(10, 10));
}

// 复制选中项
void HMIDocument::copySelectedItems()
{
    m_copiedItemsData.clear();
    QList<QGraphicsItem*> selectedItems = m_scene->selectedItems();
    if (selectedItems.isEmpty()) return;

    foreach (QGraphicsItem *item, selectedItems)
    {
        m_copiedItemsData.append(serializeItem(item));
    }
    m_lastPastePos = selectedItems.first()->pos();
    setModified(true);
}

// 粘贴项
void HMIDocument::pasteItems()
{
    if (m_copiedItemsData.isEmpty()) return;

    QPointF offset(20, 20);
    m_lastPastePos += offset;
    m_scene->clearSelection();

    foreach (const QByteArray &itemData, m_copiedItemsData)
    {
        QGraphicsItem *newItem = deserializeItem(itemData);
        if (newItem)
        {
            m_scene->addItem(newItem);
            newItem->setPos(m_lastPastePos);
            newItem->setSelected(true);
        }
    }
    setModified(true);
}

// 删除选中项
void HMIDocument::deleteSelectedItems()
{
    QList<QGraphicsItem*> selectedItems = m_scene->selectedItems();
    foreach (QGraphicsItem *item, selectedItems) {
        m_scene->removeItem(item);
        delete item;
    }
    setModified(true);
}

// 显示属性对话框
void HMIDocument::showItemProperties()
{
    QList<QGraphicsItem*> selectedItems = m_scene->selectedItems();
    if (selectedItems.isEmpty()) return;
    QGraphicsItem *item = selectedItems.first();

    // 将QGraphicsItem转换为NamedItem
    NamedItem *namedItem = dynamic_cast<NamedItem*>(item);
    if (!namedItem) return;

    QDialog dialog(this);
    dialog.setWindowTitle("属性设置");
    QFormLayout *form = new QFormLayout(&dialog);

    // 名称输入 - 使用NamedItem接口
    QLineEdit *nameEdit = new QLineEdit(namedItem->name());

    // 颜色选择（根据图形类型）
    QColor tempColor1, tempColor2;
    QPushButton *colorBtn1 = new QPushButton;
    QPushButton *colorBtn2 = new QPushButton;

    if (auto ellipse = dynamic_cast<ResizableEllipse*>(item)) {
        tempColor1 = ellipse->onColor();
        tempColor2 = ellipse->offColor();
        form->addRow("ON颜色:", colorBtn1);
        form->addRow("OFF颜色:", colorBtn2);
    } else if (auto rect = dynamic_cast<ResizableRectangle*>(item)) {
        tempColor1 = rect->pressedColor();
        tempColor2 = rect->releasedColor();
        form->addRow("按下颜色:", colorBtn1);
        form->addRow("释放颜色:", colorBtn2);
    }

    // 初始化颜色按钮
    colorBtn1->setStyleSheet("background-color:" + tempColor1.name());
    colorBtn2->setStyleSheet("background-color:" + tempColor2.name());

    // 颜色选择对话框
    connect(colorBtn1, &QPushButton::clicked, [&]() {
        QColor c = QColorDialog::getColor(tempColor1, &dialog);
        if (c.isValid()) {
            tempColor1 = c;
            colorBtn1->setStyleSheet("background-color:" + c.name());
        }
    });
    connect(colorBtn2, &QPushButton::clicked, [&]() {
        QColor c = QColorDialog::getColor(tempColor2, &dialog);
        if (c.isValid()) {
            tempColor2 = c;
            colorBtn2->setStyleSheet("background-color:" + c.name());
        }
    });

    // 布局组装
    form->addRow("对象:", nameEdit);
    QDialogButtonBox *btnBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    form->addRow(btnBox);
    connect(btnBox, &QDialogButtonBox::accepted, &dialog, &QDialog::accept);
    connect(btnBox, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);

    // 应用属性
    if (dialog.exec() == QDialog::Accepted) {
        setModified(true);
        // 使用NamedItem接口设置名称
        namedItem->setName(nameEdit->text());

        if (auto ellipse = dynamic_cast<ResizableEllipse*>(item)) {
            ellipse->setOnColor(tempColor1);
            ellipse->setOffColor(tempColor2);
        } else if (auto rect = dynamic_cast<ResizableRectangle*>(item)) {
            rect->setPressedColor(tempColor1);
            rect->setReleasedColor(tempColor2);
        }
        item->update();
    }
}

// 序列化图形项（用于复制粘贴）
QByteArray HMIDocument::serializeItem(QGraphicsItem *item)
{
    QByteArray data;
    QDataStream stream(&data, QIODevice::WriteOnly);

    // 基础信息
    stream << item->type();
    stream << item->pos();
    stream << item->flags();
    stream << item->transform();
    stream << item->isVisible();
    // 形状信息
    if (auto shape = dynamic_cast<QAbstractGraphicsShapeItem*>(item))
    {
        stream << shape->pen();
        stream << shape->brush();
        stream << shape->boundingRect();
    }
    // 具体图形信息
    if (auto rect = dynamic_cast<ResizableRectangle*>(item))
    {
        stream << rect->rect();
        stream << rect->pressedColor();
        stream << rect->releasedColor();
        stream << rect->name();
    } else if (auto ellipse = dynamic_cast<ResizableEllipse*>(item))
    {
        stream << ellipse->rect();
        stream << ellipse->onColor();
        stream << ellipse->offColor();
        stream << ellipse->name();
    }
    return data;
}

// 反序列化图形项（用于粘贴）
QGraphicsItem *HMIDocument::deserializeItem(const QByteArray &data)
{
    QDataStream stream(data);
    int type;
    QPointF pos;
    QGraphicsItem::GraphicsItemFlags flags;
    QTransform transform;
    bool visible;

    stream >> type >> pos >> flags >> transform >> visible;

    QGraphicsItem *item = nullptr;
    if (type == QGraphicsRectItem::Type) {
        QPen pen;
        QBrush brush;
        QRectF boundRect;
        QRectF rect;
        QColor pressedColor, releasedColor;
        QString name;

        stream >> pen >> brush >> boundRect >> rect >> pressedColor >> releasedColor >> name;

        ResizableRectangle *rectItem = new ResizableRectangle(0, 0, rect.width(), rect.height());
        rectItem->setPen(pen);
        rectItem->setBrush(brush);
        rectItem->setPressedColor(pressedColor);
        rectItem->setReleasedColor(releasedColor);
        rectItem->setName(name);
        item = rectItem;
    } else if (type == QGraphicsEllipseItem::Type) {
        QPen pen;
        QBrush brush;
        QRectF boundRect;
        QRectF rect;
        QColor onColor, offColor;
        QString name;

        stream >> pen >> brush >> boundRect >> rect >> onColor >> offColor >> name;

        ResizableEllipse *ellipseItem = new ResizableEllipse(0, 0, rect.width(), rect.height());
        ellipseItem->setPen(pen);
        ellipseItem->setBrush(brush);
        ellipseItem->setOnColor(onColor);
        ellipseItem->setOffColor(offColor);
        ellipseItem->setName(name);
        item = ellipseItem;
    }

    if (item) {
        item->setFlags(flags);
        item->setTransform(transform);
        item->setVisible(visible);
    }

    return item;
}

void HMIDocument::startDrawingEllipse()
{
    m_canDrawEllipse = true;
    m_canDrawRectangle = false;
}

void HMIDocument::startDrawingRectangle()
{
    m_canDrawEllipse = false;
    m_canDrawRectangle = true;
}

bool HMIDocument::saveToFile(const QString &filePath)
{
    QFile file(filePath);
    if (!file.open(QIODevice::WriteOnly)) {
        qWarning() << "无法打开文件进行写入:" << filePath;
        return false;
    }

    // 创建JSON文档结构
    QJsonObject docObject;
    docObject["title"] = m_title;
    docObject["sceneRect"] = QJsonArray({
        m_scene->sceneRect().x(),
        m_scene->sceneRect().y(),
        m_scene->sceneRect().width(),
        m_scene->sceneRect().height()
    });
    docObject["backgroundColor"] = m_scene->backgroundBrush().color().name();

    // 序列化所有图形项
    QJsonArray itemsArray;
    foreach (QGraphicsItem *item, m_scene->items()) {
        QJsonObject itemJson = itemToJson(item);
        if (!itemJson.isEmpty()) {
            itemsArray.append(itemJson);
        }
    }
    docObject["items"] = itemsArray;

    // 写入文件
    QJsonDocument doc(docObject);
    file.write(doc.toJson());
    file.close();

    // 更新文档状态
    setFilePath(filePath);
    setModified(false);
    QFileInfo fileInfo(filePath);
    setTitle(fileInfo.baseName());

    return true;
}

// 从文件加载文档
bool HMIDocument::loadFromFile(const QString &filePath)
{
    QFile file(filePath);
    if (!file.open(QIODevice::ReadOnly)) {
        qWarning() << "无法打开文件进行读取:" << filePath;
        return false;
    }

    // 读取JSON文档
    QByteArray data = file.readAll();
    QJsonDocument doc = QJsonDocument::fromJson(data);
    if (doc.isNull()) {
        qWarning() << "无效的JSON文档:" << filePath;
        return false;
    }

    // 解析文档
    QJsonObject docObject = doc.object();
    m_title = docObject["title"].toString();

    // 设置场景属性
    QJsonArray sceneRectArray = docObject["sceneRect"].toArray();
    if (sceneRectArray.size() == 4) {
        QRectF sceneRect(
            sceneRectArray[0].toDouble(),
            sceneRectArray[1].toDouble(),
            sceneRectArray[2].toDouble(),
            sceneRectArray[3].toDouble()
        );
        m_scene->setSceneRect(sceneRect);
    }

    if (docObject.contains("backgroundColor")) {
        QColor bgColor(docObject["backgroundColor"].toString());
        m_scene->setBackgroundBrush(QBrush(bgColor));
    }

    // 清除现有内容
    m_scene->clear();

    // 加载所有图形项
    QJsonArray itemsArray = docObject["items"].toArray();
    foreach (QJsonValue itemValue, itemsArray) {
        QJsonObject itemJson = itemValue.toObject();
        QGraphicsItem *item = jsonToItem(itemJson);
        if (item) {
            m_scene->addItem(item);
        }
    }

    // 更新文档状态
    setFilePath(filePath);
    setModified(false);

    return true;
}

// 将图形项转换为JSON对象
QJsonObject HMIDocument::itemToJson(QGraphicsItem *item)
{
    QJsonObject json;

    // 基础属性
    json["type"] = item->type();
    json["x"] = item->x();
    json["y"] = item->y();
    json["zValue"] = item->zValue();
    json["visible"] = item->isVisible();

    // 具体图形项属性
    if (auto ellipse = dynamic_cast<ResizableEllipse*>(item)) {
        json["itemType"] = "ellipse";
        json["rect"] = QJsonArray({
            ellipse->rect().x(),
            ellipse->rect().y(),
            ellipse->rect().width(),
            ellipse->rect().height()
        });
        json["onColor"] = ellipse->onColor().name();
        json["offColor"] = ellipse->offColor().name();
        json["currentColor"] = ellipse->brush().color().name();
        json["penColor"] = ellipse->pen().color().name();
        json["penWidth"] = ellipse->pen().width();
        json["name"] = ellipse->name();
    }
    else if (auto rect = dynamic_cast<ResizableRectangle*>(item)) {
        json["itemType"] = "rectangle";
        json["rect"] = QJsonArray({
            rect->rect().x(),
            rect->rect().y(),
            rect->rect().width(),
            rect->rect().height()
        });
        json["pressedColor"] = rect->pressedColor().name();
        json["releasedColor"] = rect->releasedColor().name();
        json["currentColor"] = rect->brush().color().name();
        json["penColor"] = rect->pen().color().name();
        json["penWidth"] = rect->pen().width();
        json["name"] = rect->name();
    }

    return json;
}

// 从JSON对象创建图形项
QGraphicsItem *HMIDocument::jsonToItem(const QJsonObject &json)
{
    QString itemType = json["itemType"].toString();
    QGraphicsItem *item = nullptr;

    if (itemType == "ellipse") {
        QJsonArray rectArray = json["rect"].toArray();
        if (rectArray.size() != 4) return nullptr;

        ResizableEllipse *ellipse = new ResizableEllipse(
            rectArray[0].toDouble(),
            rectArray[1].toDouble(),
            rectArray[2].toDouble(),
            rectArray[3].toDouble()
        );

        ellipse->setOnColor(QColor(json["onColor"].toString()));
        ellipse->setOffColor(QColor(json["offColor"].toString()));
        ellipse->setBrush(QColor(json["currentColor"].toString()));
        ellipse->setPen(QPen(
            QColor(json["penColor"].toString()),
            json["penWidth"].toDouble()
        ));
        ellipse->setName(json["name"].toString());

        item = ellipse;
    }
    else if (itemType == "rectangle") {
        QJsonArray rectArray = json["rect"].toArray();
        if (rectArray.size() != 4) return nullptr;

        ResizableRectangle *rect = new ResizableRectangle(
            rectArray[0].toDouble(),
            rectArray[1].toDouble(),
            rectArray[2].toDouble(),
            rectArray[3].toDouble()
        );
        rect->setPressedColor(QColor(json["pressedColor"].toString()));
        rect->setReleasedColor(QColor(json["releasedColor"].toString()));
        rect->setBrush(QColor(json["currentColor"].toString()));
        rect->setPen(QPen(
            QColor(json["penColor"].toString()),
            json["penWidth"].toDouble()
        ));
        rect->setName(json["name"].toString());

        item = rect;
    }

    // 设置基础属性
    if (item) {
        item->setX(json["x"].toDouble());
        item->setY(json["y"].toDouble());
        item->setZValue(json["zValue"].toDouble());
        item->setVisible(json["visible"].toBool());
    }

    return item;
}

QString HMIDocument::title() const { return m_title; }
void HMIDocument::setTitle(const QString &title) { m_title = title; }
QGraphicsView *HMIDocument::view() const { return m_view; }
QGraphicsScene *HMIDocument::scene() const { return m_scene; }
void HMIDocument::setDrawEllipse(bool enable) { m_canDrawEllipse = enable; }
void HMIDocument::setDrawRectangle(bool enable) { m_canDrawRectangle = enable; }
void HMIDocument::markModified() { setModified(true); }