505 lines
15 KiB
C++
505 lines
15 KiB
C++
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#include "document.h"
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#include "designerScene.h"
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#include "graphicsItem/graphicsBaseItem.h"
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#include "graphicsItem/graphicsItemGroup.h"
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#include "graphicsItem/graphicsRectItem.h"
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#include "graphicsItem/graphicsBusSectionItem.h"
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class GraphicsPolygonItem; // 前向声明,暂不使用多边形
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#include <QJsonObject>
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#include <QJsonArray>
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#include <QJsonDocument>
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#include <QFile>
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#include <QDataStream>
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#include <QSet>
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#include <QJsonArray>
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#include <QJsonDocument>
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#include <QFile>
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#include <QDataStream>
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// 文档格式版本号
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static const QString DOCUMENT_VERSION = "1.0";
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Document::Document(QObject *parent)
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: QObject(parent)
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, m_filename()
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, m_modified(false)
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, m_version(DOCUMENT_VERSION)
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, m_created(QDateTime::currentDateTime())
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, m_modifiedTime(QDateTime::currentDateTime())
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, m_lastSavedTime()
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, m_pScene(nullptr)
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{
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}
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Document::~Document()
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{
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// Document 不拥有 scene 的所有权,不需要删除
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m_pScene = nullptr;
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}
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// =================================================================
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// 场景关联
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// =================================================================
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void Document::setScene(DesignerScene* scene)
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{
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m_pScene = scene;
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// 如果关联了新的 scene,连接 selectionChanged 信号来追踪修改
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if (m_pScene) {
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connect(m_pScene, &QGraphicsScene::selectionChanged,
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this, [this]() {
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// 选择改变本身不代表文档修改,但可以作为用户活动的信号
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// 实际的修改由具体的操作(添加、删除、移动等)触发
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});
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}
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}
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DesignerScene* Document::scene() const
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{
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return m_pScene;
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}
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// =================================================================
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// 文件操作
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// =================================================================
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bool Document::saveToFile(const QString& filename)
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{
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QString targetFile = filename.isEmpty() ? m_filename : filename;
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if (targetFile.isEmpty()) {
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// 没有目标文件名,需要另存为对话框(这里只设置失败状态)
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emit saveStatusChanged(false, tr("未指定文件路径"));
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return false;
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}
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bool success = saveInternal(targetFile);
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if (success) {
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m_filename = targetFile;
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m_lastSavedTime = QDateTime::currentDateTime();
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m_modified = false;
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emit filenameChanged(m_filename);
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emit modifiedChanged(false);
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emit saveStatusChanged(true, tr("保存成功"));
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} else {
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emit saveStatusChanged(false, tr("保存失败"));
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}
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return success;
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}
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bool Document::loadFromFile(const QString& filename)
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{
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bool success = loadInternal(filename);
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if (success) {
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m_filename = filename;
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m_modified = false;
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m_lastSavedTime = QDateTime::currentDateTime();
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emit filenameChanged(m_filename);
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emit modifiedChanged(false);
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emit saveStatusChanged(true, tr("加载成功"));
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} else {
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emit saveStatusChanged(false, tr("加载失败"));
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}
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return success;
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}
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// =================================================================
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// 序列化核心实现
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// =================================================================
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QByteArray Document::serialize() const
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{
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if (!m_pScene) {
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return QByteArray();
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}
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QJsonObject root;
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root.insert("version", m_version);
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root.insert("created", m_created.toString(Qt::ISODate));
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root.insert("modified", m_modifiedTime.toString(Qt::ISODate));
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root.insert("filename", m_filename);
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// 序列化元数据
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if (!m_metaData.isEmpty()) {
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QJsonObject metaObj;
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for (auto it = m_metaData.begin(); it != m_metaData.end(); ++it) {
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// QVariant 需要转换为 QJsonValue
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metaObj.insert(it.key(), toJsonValue(it.value()));
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}
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root.insert("metaData", metaObj);
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}
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// 序列化图元
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QJsonArray itemsArray;
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QList<QGraphicsItem*> items = m_pScene->items();
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for (QGraphicsItem* item : items) {
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// 跳过 handle 等辅助元素
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// QGraphicsItem 不是 QObject,所以不能用 qobject_cast
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// GraphicsBaseItem 继承 QObject 和 AbstractShape (QGraphicsItem),可以用 qgraphicsitem_cast
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GraphicsBaseItem* baseItem = qgraphicsitem_cast<GraphicsBaseItem*>(item);
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if (!baseItem) {
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continue;
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}
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QJsonObject itemObj = serializeItem(baseItem);
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itemsArray.append(itemObj);
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}
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root.insert("items", itemsArray);
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QJsonDocument doc(root);
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return doc.toJson(QJsonDocument::Indented);
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}
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bool Document::deserialize(const QByteArray& data)
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{
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if (data.isEmpty() || !m_pScene) {
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return false;
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}
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QJsonParseError jsonError;
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QJsonDocument doc = QJsonDocument::fromJson(data, &jsonError);
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if (jsonError.error != QJsonParseError::NoError) {
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return false;
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}
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QJsonObject root = doc.object();
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// 解析版本信息
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QString version = root["version"].toString();
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if (version.isEmpty()) {
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return false;
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}
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// 解析时间信息
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if (root.contains("created")) {
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m_created = QDateTime::fromString(root["created"].toString(), Qt::ISODate);
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}
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if (root.contains("modified")) {
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m_modifiedTime = QDateTime::fromString(root["modified"].toString(), Qt::ISODate);
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}
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// 解析元数据
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if (root.contains("metaData")) {
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QJsonObject metaObj = root["metaData"].toObject();
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for (auto it = metaObj.begin(); it != metaObj.end(); ++it) {
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// QJsonValue 需要转换为 QVariant
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m_metaData.insert(it.key(), fromJsonValue(it.value()));
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}
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}
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// 清空当前场景
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if (m_pScene) {
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m_pScene->clear();
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}
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// 反序列化图元
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QJsonArray itemsArray = root["items"].toArray();
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for (auto itemIt : itemsArray) {
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QJsonObject itemObj = itemIt.toObject();
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deserializeItem(itemObj, m_pScene, nullptr);
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}
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return true;
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}
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// =================================================================
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// 内部实现
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// =================================================================
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bool Document::saveInternal(const QString& filename)
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{
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QByteArray data = serialize();
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if (data.isEmpty()) {
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return false;
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}
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QFile file(filename);
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if (!file.open(QIODevice::WriteOnly)) {
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return false;
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}
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file.write(data);
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file.close();
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return true;
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}
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bool Document::loadInternal(const QString& filename)
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{
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QFile file(filename);
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if (!file.open(QIODevice::ReadOnly)) {
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return false;
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}
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QByteArray data = file.readAll();
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file.close();
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return deserialize(data);
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}
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// =================================================================
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// 图元序列化/反序列化
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// =================================================================
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QJsonObject Document::serializeItem(GraphicsBaseItem* item) const
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{
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QJsonObject obj;
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// 基本属性
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obj.insert("type", getTypeString(item));
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obj.insert("id", QString::number(reinterpret_cast<quintptr>(item)));
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// 位置和变换
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QPointF pos = item->pos();
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QJsonObject posObj;
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posObj.insert("x", pos.x());
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posObj.insert("y", pos.y());
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obj.insert("pos", posObj);
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obj.insert("rotation", item->rotation());
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QJsonObject scaleObj;
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// Qt 的 scale() 返回 qreal,不是 QPointF
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scaleObj.insert("x", item->scale());
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scaleObj.insert("y", item->scale());
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obj.insert("scale", scaleObj);
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// 样式属性
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QJsonObject penObj;
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penObj.insert("color", item->penColor().name());
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penObj.insert("width", item->pen().widthF());
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penObj.insert("style", static_cast<int>(item->pen().style()));
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obj.insert("pen", penObj);
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QJsonObject brushObj;
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brushObj.insert("color", item->brushColor().name());
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obj.insert("brush", brushObj);
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// 尺寸
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obj.insert("width", item->width());
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obj.insert("height", item->height());
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// 类型特定属性
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obj.insert("properties", serializeItemProperties(item));
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// 如果是组,递归序列化子项
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GraphicsItemGroup* group = qgraphicsitem_cast<GraphicsItemGroup*>(item);
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if (group) {
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QJsonArray childrenArray;
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QList<QGraphicsItem*> children = group->childItems();
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for (QGraphicsItem* child : children) {
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// QGraphicsItem 没有 QObject 接口,所以不能用 qobject_cast
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// 使用 static_cast 并检查 nullptr
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GraphicsBaseItem* childBase = static_cast<GraphicsBaseItem*>(child);
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if (childBase) {
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childrenArray.append(serializeItem(childBase));
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}
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}
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obj.insert("children", childrenArray);
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}
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return obj;
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}
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void Document::deserializeItem(const QJsonObject& obj, QGraphicsScene* scene, QGraphicsItem* parent)
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{
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QString typeStr = obj["type"].toString();
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GraphicsBaseItem* item = nullptr;
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// 根据类型创建图元
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if (typeStr == "GraphicsRectItem") {
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item = deserializeRectItem(obj);
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} else if (typeStr == "GraphicsBusSectionItem") {
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item = deserializeBusSectionItem(obj);
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} else if (typeStr == "GraphicsItemGroup") {
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GraphicsItemGroup* group = deserializeItemGroup(obj, scene, parent);
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// 对于组,不设置单个图元的属性,只递归处理子项
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QJsonArray childrenArray = obj["children"].toArray();
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for (auto childIt : childrenArray) {
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deserializeItem(childIt.toObject(), scene, group);
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}
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return;
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}
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// GraphicsPolygonItem 暂时跳过,因为没有 Q_OBJECT 宏
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if (!item) {
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return;
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}
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// 设置基本属性
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QJsonObject posObj = obj["pos"].toObject();
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item->setPos(posObj["x"].toDouble(), posObj["y"].toDouble());
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item->setRotation(obj["rotation"].toDouble());
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// Qt 的 setScale() 只接受单个参数,使用 QTransform 来设置非均匀缩放
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QJsonObject scaleObj = obj["scale"].toObject();
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double scaleX = scaleObj["x"].toDouble();
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double scaleY = scaleObj["y"].toDouble();
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QTransform transform;
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transform.scale(scaleX, scaleY);
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item->setTransform(transform);
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QJsonObject penObj = obj["pen"].toObject();
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QPen pen;
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pen.setColor(QColor(penObj["color"].toString()));
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pen.setWidthF(penObj["width"].toDouble());
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pen.setStyle(static_cast<Qt::PenStyle>(penObj["style"].toInt()));
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item->setPen(pen);
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QJsonObject brushObj = obj["brush"].toObject();
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QBrush brush;
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brush.setColor(QColor(brushObj["color"].toString()));
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item->setBrush(brush);
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item->setWidth(obj["width"].toDouble());
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item->setHeight(obj["height"].toDouble());
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// 添加到场景或父项
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if (parent) {
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// 添加到组中
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GraphicsItemGroup* group = static_cast<GraphicsItemGroup*>(parent);
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if (group) {
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group->addItems(QList<QGraphicsItem*>() << item);
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|
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}
|
|||
|
|
} else {
|
|||
|
|
scene->addItem(item);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 递归处理子项
|
|||
|
|
QJsonArray childrenArray = obj["children"].toArray();
|
|||
|
|
for (auto childIt : childrenArray) {
|
|||
|
|
deserializeItem(childIt.toObject(), scene, item);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// =================================================================
|
|||
|
|
// QVariant <-> QJsonValue 转换辅助函数
|
|||
|
|
// =================================================================
|
|||
|
|
|
|||
|
|
QJsonValue Document::toJsonValue(const QVariant& value) const
|
|||
|
|
{
|
|||
|
|
if (value.typeId() == qMetaTypeId<bool>()) {
|
|||
|
|
return value.toBool();
|
|||
|
|
} else if (value.typeId() == qMetaTypeId<int>()) {
|
|||
|
|
return value.toInt();
|
|||
|
|
} else if (value.typeId() == qMetaTypeId<double>()) {
|
|||
|
|
return value.toDouble();
|
|||
|
|
} else if (value.typeId() == QMetaType::Type::QString) {
|
|||
|
|
return value.toString();
|
|||
|
|
} else {
|
|||
|
|
return value.toString();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
QVariant Document::fromJsonValue(const QJsonValue& value) const
|
|||
|
|
{
|
|||
|
|
if (value.isDouble()) {
|
|||
|
|
return value.toDouble();
|
|||
|
|
} else if (value.isBool()) {
|
|||
|
|
return value.toBool();
|
|||
|
|
} else if (value.isArray()) {
|
|||
|
|
QList<QVariant> list;
|
|||
|
|
for (const QJsonValue& v : value.toArray()) {
|
|||
|
|
list.append(fromJsonValue(v));
|
|||
|
|
}
|
|||
|
|
return list;
|
|||
|
|
} else if (value.isObject()) {
|
|||
|
|
QMap<QString, QVariant> map;
|
|||
|
|
for (auto it = value.toObject().begin(); it != value.toObject().end(); ++it) {
|
|||
|
|
map.insert(it.key(), fromJsonValue(it.value()));
|
|||
|
|
}
|
|||
|
|
return map;
|
|||
|
|
} else {
|
|||
|
|
return value.toString();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// =================================================================
|
|||
|
|
// 辅助函数
|
|||
|
|
// =================================================================
|
|||
|
|
|
|||
|
|
QString Document::getTypeString(GraphicsBaseItem* item) const
|
|||
|
|
{
|
|||
|
|
// 使用动态类型信息获取类型字符串(qobject_cast 要求类型有 Q_OBJECT 宏)
|
|||
|
|
// GraphicsRectItem, GraphicsBusSectionItem, GraphicsItemGroup 都有 Q_OBJECT 宏
|
|||
|
|
if (qobject_cast<GraphicsRectItem*>(item)) {
|
|||
|
|
return "GraphicsRectItem";
|
|||
|
|
} else if (qobject_cast<GraphicsBusSectionItem*>(item)) {
|
|||
|
|
return "GraphicsBusSectionItem";
|
|||
|
|
} else if (qobject_cast<GraphicsItemGroup*>(item)) {
|
|||
|
|
return "GraphicsItemGroup";
|
|||
|
|
}
|
|||
|
|
// GraphicsPolygonItem 没有 Q_OBJECT 宏,暂时不支持序列化
|
|||
|
|
return "GraphicsBaseItem";
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
QJsonObject Document::serializeItemProperties(GraphicsBaseItem* item) const
|
|||
|
|
{
|
|||
|
|
QJsonObject props;
|
|||
|
|
|
|||
|
|
// 类型特定的属性序列化
|
|||
|
|
GraphicsRectItem* rectItem = qobject_cast<GraphicsRectItem*>(item);
|
|||
|
|
if (rectItem) {
|
|||
|
|
// 这里可以添加圆角矩形等特殊属性
|
|||
|
|
// props.insert("isRound", rectItem->m_bIsRound);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 多边形等特殊属性可以在这里扩展
|
|||
|
|
|
|||
|
|
return props;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
GraphicsBaseItem* Document::deserializeRectItem(const QJsonObject& obj)
|
|||
|
|
{
|
|||
|
|
// 根据保存的属性重建矩形
|
|||
|
|
double width = obj["width"].toDouble();
|
|||
|
|
double height = obj["height"].toDouble();
|
|||
|
|
|
|||
|
|
// 图元的原点在中心,因此 rect 的左上角为 (-width/2, -height/2)
|
|||
|
|
QRect rect(-width/2, -height/2, width, height);
|
|||
|
|
return new GraphicsRectItem(rect, false);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
GraphicsBaseItem* Document::deserializeBusSectionItem(const QJsonObject& obj)
|
|||
|
|
{
|
|||
|
|
// 总线段重建
|
|||
|
|
double width = obj["width"].toDouble();
|
|||
|
|
double height = obj["height"].toDouble();
|
|||
|
|
// GraphicsBusSectionItem 构造函数:rect, parent
|
|||
|
|
QRect rect(0, 0, width, height);
|
|||
|
|
return new GraphicsBusSectionItem(rect);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
GraphicsItemGroup* Document::deserializeItemGroup(const QJsonObject& obj,
|
|||
|
|
QGraphicsScene* scene,
|
|||
|
|
QGraphicsItem* parent)
|
|||
|
|
{
|
|||
|
|
GraphicsItemGroup* group = new GraphicsItemGroup(parent);
|
|||
|
|
group->setWidth(obj["width"].toDouble());
|
|||
|
|
group->setHeight(obj["height"].toDouble());
|
|||
|
|
return group;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void Document::setMetaData(const QString& key, const QVariant& value)
|
|||
|
|
{
|
|||
|
|
m_metaData.insert(key, value);
|
|||
|
|
m_modifiedTime = QDateTime::currentDateTime();
|
|||
|
|
if (m_pScene) {
|
|||
|
|
setModified(true);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
QVariant Document::metaData(const QString& key) const
|
|||
|
|
{
|
|||
|
|
return m_metaData.value(key);
|
|||
|
|
}
|