122 lines
4.0 KiB
C++
122 lines
4.0 KiB
C++
/*
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* Copyright 2019 xmulitech@gmail.com
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ExWidget.h"
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#include "ui_ExWidget.h"
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#include <QMetaProperty>
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#include <QDebug>
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ExWidget::ExWidget(QWidget *parent) : QWidget(parent), ui(new Ui::ExWidget)
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{
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ui->setupUi(this);
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m_boy = new ExPerson("张三");
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m_boy->setProperty("score", 90);
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m_boy->setProperty("age", 20);
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m_boy->setProperty("sex", "Boy"); //动态属性
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connect(m_boy, &ExPerson::ageChanged, this, &ExWidget::onAgeChange);
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m_girl = new ExPerson("张丽");
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m_girl->setProperty("score", 80);
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m_girl->setProperty("age", 10);
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m_girl->setProperty("sex", "Gril"); //动态属性
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connect(m_girl, &ExPerson::ageChanged, this, &ExWidget::onAgeChange);
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ui->spinBoy->setProperty("isBoy", true); //动态属性
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ui->spinGril->setProperty("isBoy", false);
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connect(ui->spinGril, SIGNAL(valueChanged(int)), this, SLOT(onSpinValChange(int)));
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connect(ui->spinBoy, SIGNAL(valueChanged(int)), this, SLOT(onSpinValChange(int)));
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connect(ui->btnBoyAdd, SIGNAL(clicked()), this, SLOT(onBtnBoyInc()));
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connect(ui->btnGrilAdd, SIGNAL(clicked()), this, SLOT(onBtnGrilInc()));
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connect(ui->btnMetaObject, SIGNAL(clicked()), this, SLOT(onClassInfo()));
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connect(ui->btnClean, SIGNAL(clicked()), this, SLOT(onBtnClear()));
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setWindowTitle(QObject::tr("元对象MetaObject和(含动态)属性Propert的用法"));
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}
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ExWidget::~ExWidget()
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{
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delete ui;
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}
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void ExWidget::onAgeChange(int val)
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{
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Q_UNUSED(val) //参数val没使用，避免警告
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ExPerson* person = qobject_cast<ExPerson *>(sender()); //类型投射
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QString name = person->property("name").toString();
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QString sex = person->property("sex").toString();
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int age = person->getAge(); //通过接口函数，获得年龄
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//或使用 int age = person->property("age").toInt();
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ui->textEdit->appendPlainText(name+","+sex + QString::asprintf(",年龄=%d",age));
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}
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void ExWidget::onSpinValChange(int val)
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{
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Q_UNUSED(val)
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QSpinBox* spin = qobject_cast<QSpinBox *>(sender()); //类型投射
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if (spin->property("isBoy").toBool())
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m_boy->setAge(ui->spinBoy->value());
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else
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m_girl->setAge(ui->spinGril->value());
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}
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void ExWidget::onBtnClear()
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{
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ui->textEdit->clear();
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}
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void ExWidget::onBtnBoyInc()
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{
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m_boy->incAge();
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}
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void ExWidget::onBtnGrilInc()
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{
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m_girl->incAge();
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}
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void ExWidget::onClassInfo()
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{
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const QMetaObject* meta = m_boy->metaObject();
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ui->textEdit->clear();
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ui->textEdit->appendPlainText("==元对象信息(Meta Object)===");
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ui->textEdit->appendPlainText(QString("类名称: %1\n").arg(meta->className()));
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ui->textEdit->appendPlainText("属性(property)");
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for (int i = meta->propertyOffset(); i < meta->propertyCount(); i++)
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{
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QMetaProperty prop = meta->property(i);
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const char* propName = prop.name();
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QString propValue = m_boy->property(propName).toString();
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ui->textEdit->appendPlainText(QString("属性名称=%1， 属性值= %2").arg(propName).arg(propValue));
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}
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ui->textEdit->appendPlainText("");
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ui->textEdit->appendPlainText("classInfo:");
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for (int i = meta->classInfoOffset(); i < meta->classInfoCount(); i++)
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{
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QMetaClassInfo classInfo = meta->classInfo(i);
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ui->textEdit->appendPlainText(QString("Name=%1， Value= %2").arg(classInfo.name()).arg(classInfo.value()));
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}
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}
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