43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
#include "ExDelegate.h"
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#include <QComboBox>
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ExDelegate::ExDelegate()
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{
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}
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//创建用于编辑的模型数据的widget组件，如一个QComboBox组件
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QWidget *ExDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QComboBox *comboBox = new QComboBox(parent);
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comboBox->addItem("github：https://github.com/touwoyimuli");
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comboBox->addItem("csdn博客：https://blog.csdn.net/qq_33154343");
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comboBox->addItem("github.io博客：https://touwoyimuli.github.io/");
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comboBox->addItem("https://www.google.com/ qt 学习 加油 2019-09-30");
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return comboBox; //返回此编辑器
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}
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//从数据模型获取数据，显示在代理组件之中，让其编辑
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void ExDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
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{
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QString str = index.model()->data(index, Qt::EditRole).toString();
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QComboBox *comboBox = static_cast<QComboBox *>(editor);
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comboBox->addItem(str);
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//其他组件的话， 此处可以设定写的值一类，eg：setText(str) setValue()
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}
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//将widget上的数据更新到数据模型
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void ExDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
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{
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QComboBox *comboBox = static_cast<QComboBox *>(editor);
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QString str = comboBox->currentText();
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model->setData(index, str, Qt::EditRole);
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}
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//用于给widget组件设置一个合适的大小
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void ExDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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editor->setGeometry(option.rect); //设置组件的大小
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}
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