Qt QAbstractTableModel 与 QTableView 结合使用,添加复选框,下拉菜单,不同控件
Qt QAbstractTableModel 与 QTableView 结合使用
前言
QAbstractTableModel的父类QABstractItemModel,他从父类中继承下来了大量方法,我们需要使用该类的话,也是需要继承与他(QAbstractTableModel),然后进行重写其里面的方法。
项目实现效果:
总体来说,继承于QAbstractTableModel实现起来还是蛮容易的,重写方法,根据自己的项目需求进行编写,对于数据的管理也是挺友好的。
相比于QTableWidget,QAbstractTableModel使用的内存更少,数据管理更方便。
定义
需要包含头文件: #include <QAbstractTableModel>
-
继承自QAbstractTableModel
class TableModel : public QAbstractTableModel { public: // ... private: // 16列,对应16个链表存储数据 QStringList m_No; QStringList m_Reference; QStringList m_X; QStringList m_Y; QStringList m_Z; QStringList m_R; QStringList m_Part; QStringList m_Feeder; QStringList m_Nozzle; QStringList m_HD; QMap<int, Qt::CheckState> m_CS; QStringList m_CY; QMap<int, Qt::CheckState> m_SK; QStringList m_AR; QMap<int, Qt::CheckState> m_FID; QStringList m_BL; // 存储水平方向头数据 QStringList m_HorizontalHead; }
这里我们需求是有16列,所以得定义16个数据变量来存储。
-
重写以下方法
// 返回行个数 virtual int rowCount(const QModelIndex &parent = QModelIndex()) const override; // 返回列个数 virtual int columnCount(const QModelIndex &parent = QModelIndex()) const override; // 返回头文本 virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override; // 返回索引数据 virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override; // 返回模型索引 virtual QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override; // 返回模型索引的编辑方式 virtual Qt::ItemFlags flags(const QModelIndex &index) const override; // 设置模型索引数据 virtual bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override; // 插入行 virtual bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override; // 删除行 virtual bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
-
实现方法体
(1). rowCount
此方法的作用:见名之意,此方法是返回行的个数。// 返回行个数 int TableModel::rowCount(const QModelIndex &parent) const { // 某一列的数据个数即是行数 return this->m_No.size(); }
(2). columnCount
此方法的作用:见名之意,此方法是返回列的个数。
// 返回列个数 int TableModel::columnCount(const QModelIndex &parent) const { // 项目代码中,我们再头文件里写了一个对于列表头索引的枚举,所以这里直接使用枚举的个数来进行返回。 return COLUMN_HEAD_INDEX::COLUMN; }
(3). headerData
此方法的作用:设置表头文本,并返回文本内容
// 返回头文本 QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const { if (role != Qt::DisplayRole) // 返回一个默认数据的表头 return QAbstractTableModel::headerData(section, orientation, role); // 仅仅只是返回水平方向的表头 if (orientation == Qt::Orientation::Horizontal) { return this->m_HorizontalHead[section]; } return QAbstractTableModel::headerData(section, orientation, role); }
(4). data
此方法的作用:返回索引的数据。// 返回索引数据 QVariant TableModel::data(const QModelIndex &index, int role) const { // 不存在则返回默认 if (!index.isValid()) return QVariant(); // 如果角色为显示和编辑模式 if (role == Qt::DisplayRole || role == Qt::EditRole) { // 此处省略一万行代码... // 否则如果角色为选中模式(即多选框) } else if (role == Qt::CheckStateRole) { // 此处省略一万行代码... } return QVariant(); }
省略处的代码将在下方进行展示。每个参数都有其特殊意义。
(5). index
此方法的作用:返回行和列对应单元格的索引。// 返回模型索引 QModelIndex TableModel::index(int row, int column, const QModelIndex &parent) const { // 行和列的合法性检查 if (row < 0 || row >= this->m_No.size() || column < 0 || column >= COLUMN_HEAD_INDEX::COLUMN) { return QModelIndex(); } // 此处省略一万行代码... // 新建一个索引并绑定指针数据返回(指针数据可有可无) // return createIndex(row, column); return createIndex(row, column); }
省略处的代码将在下方进行展示。根据行和列新建一个索引并返回。
(6). flags
此方法的作用:根据索引,返回其的编辑模式。// 返回模型索引的编辑方式 Qt::ItemFlags TableModel::flags(const QModelIndex &index) const { if (!index.isValid()) { // 返回用户可以与界面进行交互 return Qt::ItemIsEnabled | Qt::ItemIsSelectable; } // 此处省略一万行代码... // 返回用户可以进行编辑 // return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable; return Qt::ItemIsEnabled | Qt::ItemIsSelectable; }
省略处的代码将在下方进行展示。根据索引的列返回编辑方式。
(7). setData
此方法的作用:将参数value索引存入对应列的数据变量中。// 设置模型索引数据 bool TableModel::setData(const QModelIndex &index, const QVariant &value, int role) { if (index.isValid() && role == Qt::EditRole) { // 此处省略一万行代码... // 设置完成后发射信号告诉视图数据有修改 emit dataChanged(index, index); // 参数是左上角和右下角的模型索引(这里是相同的) return true; } else if (index.isValid() && role == Qt::CheckStateRole) { // 此处省略一万行代码... // 设置完成后发射信号告诉视图数据有修改 emit dataChanged(index, index); // 参数是左上角和右下角的模型索引(这里是相同的) return true; } return false; }
省略处的代码将在下方进行展示。存储完后,得发射信号,告诉视图数据有修改。
(8). insertRows
此方法的作用:插入一行或多行数据。// 插入行 参数:插入的位置;插入的行数;父项的模型索引 bool TableModel::insertRows(int row, int count, const QModelIndex &parent) { // 如果插入零行,则返回false,表示插入失败 if (count == 0) return false; // 没有父类 if (!parent.isValid()) { // 从row开始插入行,直到row + count - 1处 beginInsertRows(QModelIndex(), row, row + count - 1); // 有父类 } else { // 从row开始插入行,直到row + count - 1处 beginInsertRows(parent, row, row + count - 1); } // 按照位置在链表对应位置进行插入数据 for (int addCount = 0; addCount < count; addCount++) { this->m_No.insert(row + addCount, ""); this->m_Reference.insert(row + addCount, ""); this->m_X.insert(row + addCount, ""); this->m_Y.insert(row + addCount, ""); this->m_Z.insert(row + addCount, ""); this->m_R.insert(row + addCount, ""); this->m_Part.insert(row + addCount, ""); this->m_Feeder.insert(row + addCount, ""); this->m_Nozzle.insert(row + addCount, ""); this->m_HD.insert(row + addCount, ""); this->m_CS.insert(row + addCount, Qt::CheckState::Unchecked); this->m_CY.insert(row + addCount, ""); this->m_SK.insert(row + addCount, Qt::CheckState::Unchecked); this->m_AR.insert(row + addCount, ""); this->m_FID.insert(row + addCount, Qt::CheckState::Unchecked); this->m_BL.insert(row + addCount, ""); } // 结束插入行 endInsertRows(); return true; }
使用beginInsertRows()开始插入,endInsertRows()结束插入。
插入后,存储数据的链表也得对应插入空数据,或者插入默认数据;这才能保证数据的同步性。(9). removeRows
此方法的作用:删除一行或者多行数据。// 删除行 bool TableModel::removeRows(int row, int count, const QModelIndex &parent) { if (count == 0) return false; if (!parent.isValid()) { beginRemoveRows(QModelIndex(), row, row + count - 1); } else { beginInsertRows(parent, row, row + count - 1); } // 按照位置在链表对应位置进行移除数据 for (int removeCount = 0; removeCount < count; removeCount++) { this->m_No.removeAt(row); this->m_Reference.removeAt(row); this->m_X.removeAt(row); this->m_Y.removeAt(row); this->m_Z.removeAt(row); this->m_R.removeAt(row); this->m_Part.removeAt(row); this->m_Feeder.removeAt(row); this->m_Nozzle.removeAt(row); this->m_HD.removeAt(row); this->m_CS.remove(row + removeCount); this->m_CY.removeAt(row); this->m_SK.remove(row + removeCount); this->m_AR.removeAt(row); this->m_FID.remove(row + removeCount); this->m_BL.removeAt(row); } endRemoveRows(); return true; }
使用beginRemoveRows()开始删除,endRemoveRows()结束删除。
删除后,存储数据的链表也得删除对应的数据;这才能保证数据的同步性。
好了,到了这里,说明前期准备工作已经做得差不多了,接下来就可以去使用这个类了。
使用
另外新建类HzcTableEdit
ui文件:
再构造函数中new对象将其与TableView进行绑定即可。
TableModel *m_tableModel = new TableModel;
ui.tableView->setModel(this->m_tableModel);
至于插入、删除等功能,实现按钮的槽方法,再使用m_tableModel对象调用插入和删除的方法即可;具体实现按照具体项目需求即可。
QTableView 零碎知识点
设置水平头文本居中
ui.tableView->horizontalHeader()->setDefaultAlignment(Qt::AlignHCenter);
设置隔行变色
ui.tableView->setAlternatingRowColors(true);
设置最后一列填满表格剩余空间
ui.tableView->horizontalHeader()->setStretchLastSection(true);
设置表格行高
ui.tableView->verticalHeader()->setDefaultSectionSize(30);
设置表格列宽
ui.tableView->setColumnWidth(column, 40);
设置用户可以拖动行
ui.tableView->verticalHeader()->setSectionsMovable(true);
设置固定行高
ui.tableView->verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);
ui.tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
设置表头样式表颜色
// 设置行表头背景颜色样式为浅黄色
ui.tableView->horizontalHeader()->setStyleSheet("QHeaderView::section{background:#ffff9b;}");
// 设置列表头背景颜色样式为浅蓝色
ui.tableView->verticalHeader()->setStyleSheet("QHeaderView::section{background:#a7fffa;}");
// 设置左上角两个表头相交的区域的颜色样式为浅灰色
ui.tableView->setStyleSheet("QTableCornerButton::section{background:#c2c2c2;}");
全部实现代码
TableModel.h
#pragma once
#include <QAbstractTableModel>
#pragma execution_character_set("utf-8") // qt支持显示中文
enum COLUMN_HEAD_INDEX {
No = 0,
Reference = 1,
X = 2,
Y = 3,
Z = 4,
R = 5,
Part = 6,
Feeder = 7,
Nozzle = 8,
HD = 9,
CS = 10,
CY = 11,
SK = 12,
AR = 13,
FID = 14,
BL = 15,
COLUMN = 16
};
class TableModel : public QAbstractTableModel {
public:
TableModel(QAbstractTableModel *parent = nullptr);
~TableModel();
// 返回行个数
virtual int rowCount(const QModelIndex &parent = QModelIndex()) const override;
// 返回列个数
virtual int columnCount(const QModelIndex &parent = QModelIndex()) const override;
// 返回头文本
virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
// 返回索引数据
virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
// 返回模型索引
virtual QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
// 返回模型索引的编辑方式
virtual Qt::ItemFlags flags(const QModelIndex &index) const override;
// 设置模型索引数据
virtual bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
// 插入行
virtual bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
// 删除行
virtual bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
private:
// 16列,对应16个链表存储数据
QStringList m_No;
QStringList m_Reference;
QStringList m_X;
QStringList m_Y;
QStringList m_Z;
QStringList m_R;
QStringList m_Part;
QStringList m_Feeder;
QStringList m_Nozzle;
QStringList m_HD;
QMap<int, Qt::CheckState> m_CS;
QStringList m_CY;
QMap<int, Qt::CheckState> m_SK;
QStringList m_AR;
QMap<int, Qt::CheckState> m_FID;
QStringList m_BL;
// 存储水平方向头数据
QStringList m_HorizontalHead;
};
TableModel.cpp
#include "TableModel.h"
TableModel::TableModel(QAbstractTableModel *parent) : QAbstractTableModel(parent) {
this->m_HorizontalHead.append("No.");
this->m_HorizontalHead.append("Reference");
this->m_HorizontalHead.append("X");
this->m_HorizontalHead.append("Y");
this->m_HorizontalHead.append("Z");
this->m_HorizontalHead.append("R");
this->m_HorizontalHead.append("Part");
this->m_HorizontalHead.append("Feeder");
this->m_HorizontalHead.append("Nozzle");
this->m_HorizontalHead.append("HD");
this->m_HorizontalHead.append("CS");
this->m_HorizontalHead.append("CY");
this->m_HorizontalHead.append("SK");
this->m_HorizontalHead.append("AR");
this->m_HorizontalHead.append("FID");
this->m_HorizontalHead.append("BL");
}
TableModel::~TableModel() {
}
// 返回行个数
int TableModel::rowCount(const QModelIndex &parent) const {
return this->m_No.size();
}
// 返回列个数
int TableModel::columnCount(const QModelIndex &parent) const {
return COLUMN_HEAD_INDEX::COLUMN;
}
// 返回头文本
QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const {
if (role != Qt::DisplayRole) // 返回一个默认数据的表头
return QAbstractTableModel::headerData(section, orientation, role);
if (orientation == Qt::Orientation::Horizontal) {
return this->m_HorizontalHead[section];
}
return QAbstractTableModel::headerData(section, orientation, role);
}
// 返回索引数据
QVariant TableModel::data(const QModelIndex &index, int role) const {
// 不存在则返回默认
if (!index.isValid()) return QVariant();
if (role == Qt::DisplayRole || role == Qt::EditRole) {
switch (index.column()) {
case COLUMN_HEAD_INDEX::No:
return this->m_No[index.row()];
break;
case COLUMN_HEAD_INDEX::Reference:
return this->m_Reference[index.row()];
break;
case COLUMN_HEAD_INDEX::X:
return this->m_X[index.row()];
break;
case COLUMN_HEAD_INDEX::Y:
return this->m_Y[index.row()];
break;
case COLUMN_HEAD_INDEX::Z:
return this->m_Z[index.row()];
break;
case COLUMN_HEAD_INDEX::R:
return this->m_R[index.row()];
break;
case COLUMN_HEAD_INDEX::Part:
return this->m_Part[index.row()];
break;
case COLUMN_HEAD_INDEX::Feeder:
return this->m_Feeder[index.row()];
break;
case COLUMN_HEAD_INDEX::Nozzle:
return this->m_Nozzle[index.row()];
break;
case COLUMN_HEAD_INDEX::HD:
return this->m_HD[index.row()];
break;
case COLUMN_HEAD_INDEX::CY:
return this->m_CY[index.row()];
break;
case COLUMN_HEAD_INDEX::AR:
return this->m_AR[index.row()];
break;
case COLUMN_HEAD_INDEX::BL:
return this->m_BL[index.row()];
default:
return QVariant();
break;
}
} else if (role == Qt::CheckStateRole) {
switch (index.column()) {
case COLUMN_HEAD_INDEX::CS:
return this->m_CS[index.row()] == Qt::Checked ? Qt::Checked : Qt::Unchecked;
break;
case COLUMN_HEAD_INDEX::SK:
return this->m_SK[index.row()] == Qt::Checked ? Qt::Checked : Qt::Unchecked;
break;
case COLUMN_HEAD_INDEX::FID:
return this->m_FID[index.row()] == Qt::Checked ? Qt::Checked : Qt::Unchecked;
break;
default:
return QVariant();
break;
}
}
return QVariant();
}
// 返回模型索引
QModelIndex TableModel::index(int row, int column, const QModelIndex &parent) const {
// 行和列的合法性检查
if (row < 0 || row >= this->m_No.size() || column < 0 || column >= COLUMN_HEAD_INDEX::COLUMN) {
return QModelIndex();
}
switch (column) {
case COLUMN_HEAD_INDEX::No:
// 获取对应行和列单元格的数据
//QString str = this->m_No[row];
// 新建一个索引并绑定指针数据返回
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::Reference:
//QString str = this->m_Reference[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::X:
//QString str = this->m_X[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::Y:
//QString str = this->m_Y[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::Z:
//QString str = this->m_Z[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::R:
//QString str = this->m_R[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::Part:
//QString str = this->m_Part[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::Feeder:
//QString str = this->m_Feeder[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::Nozzle:
//QString str = this->m_Nozzle[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::HD:
//QString str = this->m_HD[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::CS:
//QString str = this->m_CS[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::CY:
//QString str = this->m_CY[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::SK:
//QString str = this->m_SK[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::AR:
//QString str = this->m_AR[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::FID:
//QString str = this->m_FID[row];
return createIndex(row, column/*, &str*/);
break;
case COLUMN_HEAD_INDEX::BL:
//QString str = this->m_BL[row];
return createIndex(row, column/*, &str*/);
break;
default:
return createIndex(row, column);
break;
}
return createIndex(row, column);
}
// 返回模型索引的编辑方式
Qt::ItemFlags TableModel::flags(const QModelIndex &index) const {
if (!index.isValid()) {
// 返回用户可以与界面进行交互
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
switch (index.column()) {
case COLUMN_HEAD_INDEX::No:
// 返回用户可以与界面进行交互
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::Reference:
// 返回用户可以进行编辑
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::X:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::Y:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::Z:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::R:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::Part:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::Feeder:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::Nozzle:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::HD:
return QAbstractItemModel::flags(index) | Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::CS:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;
break;
case COLUMN_HEAD_INDEX::CY:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::SK:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;
break;
case COLUMN_HEAD_INDEX::AR:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
break;
case COLUMN_HEAD_INDEX::FID:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;
break;
case COLUMN_HEAD_INDEX::BL:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
default:
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
break;
}
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
// 设置模型索引数据
bool TableModel::setData(const QModelIndex &index, const QVariant &value, int role) {
if (index.isValid() && role == Qt::EditRole) {
switch (index.column()) {
case COLUMN_HEAD_INDEX::No:
this->m_No[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::Reference:
this->m_Reference[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::X:
this->m_X[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::Y:
this->m_Y[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::Z:
this->m_Z[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::R:
this->m_R[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::Part:
this->m_Part[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::Feeder:
this->m_Feeder[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::Nozzle:
this->m_Nozzle[index.row()] = value.toString();
break;
case COLUMN_HEAD_INDEX::HD:
this->m_HD[index.row()] = value.toString();
break;
//case COLUMN_HEAD_INDEX::CS:
// //this->m_CS[index.row()] = value.toString();
// this->m_CS[index.row()] = (value.toInt() == Qt::Checked ? Qt::Checked : Qt::Unchecked);
// break;
case COLUMN_HEAD_INDEX::CY:
this->m_CY[index.row()] = value.toString();
break;
/*case COLUMN_HEAD_INDEX::SK:
this->m_SK[index.row()] = value.toString();
break;*/
case COLUMN_HEAD_INDEX::AR:
this->m_AR[index.row()] = value.toString();
break;
/*case COLUMN_HEAD_INDEX::FID:
this->m_FID[index.row()] = value.toString();
break;*/
case COLUMN_HEAD_INDEX::BL:
this->m_BL[index.row()] = value.toString();
default:
break;
}
// 设置完成后发射信号告诉视图数据有修改
emit dataChanged(index, index); // 参数是左上角和右下角的模型索引(这里是相同的)
return true;
} else if (index.isValid() && role == Qt::CheckStateRole) {
switch (index.column()) {
case COLUMN_HEAD_INDEX::CS:
this->m_CS[index.row()] = (value.toInt() == Qt::Checked ? Qt::Checked : Qt::Unchecked);
break;
case COLUMN_HEAD_INDEX::SK:
this->m_SK[index.row()] = (value.toInt() == Qt::Checked ? Qt::Checked : Qt::Unchecked);
break;
case COLUMN_HEAD_INDEX::FID:
this->m_FID[index.row()] = (value.toInt() == Qt::Checked ? Qt::Checked : Qt::Unchecked);
break;
default:
break;
}
// 设置完成后发射信号告诉视图数据有修改
emit dataChanged(index, index); // 参数是左上角和右下角的模型索引(这里是相同的)
return true;
}
return false;
}
// 插入行 参数:插入的位置;插入的行数;父项的模型索引
bool TableModel::insertRows(int row, int count, const QModelIndex &parent) {
// 如果插入零行,则返回false,表示插入失败
if (count == 0) return false;
// 没有父类
if (!parent.isValid()) {
// 从row开始插入行,直到row + count - 1处
beginInsertRows(QModelIndex(), row, row + count - 1);
// 有父类
} else {
// 从row开始插入行,直到row + count - 1处
beginInsertRows(parent, row, row + count - 1);
}
// 按照位置在链表对应位置进行插入数据
for (int addCount = 0; addCount < count; addCount++) {
this->m_No.insert(row + addCount, "");
this->m_Reference.insert(row + addCount, "");
this->m_X.insert(row + addCount, "");
this->m_Y.insert(row + addCount, "");
this->m_Z.insert(row + addCount, "");
this->m_R.insert(row + addCount, "");
this->m_Part.insert(row + addCount, "");
this->m_Feeder.insert(row + addCount, "");
this->m_Nozzle.insert(row + addCount, "");
this->m_HD.insert(row + addCount, "");
this->m_CS.insert(row + addCount, Qt::CheckState::Unchecked);
this->m_CY.insert(row + addCount, "");
this->m_SK.insert(row + addCount, Qt::CheckState::Unchecked);
this->m_AR.insert(row + addCount, "");
this->m_FID.insert(row + addCount, Qt::CheckState::Unchecked);
this->m_BL.insert(row + addCount, "");
}
// 结束插入行
endInsertRows();
return true;
}
// 删除行
bool TableModel::removeRows(int row, int count, const QModelIndex &parent) {
if (count == 0) return false;
if (!parent.isValid()) {
beginRemoveRows(QModelIndex(), row, row + count - 1);
} else {
beginInsertRows(parent, row, row + count - 1);
}
// 按照位置在链表对应位置进行移除数据
for (int removeCount = 0; removeCount < count; removeCount++) {
this->m_No.removeAt(row);
this->m_Reference.removeAt(row);
this->m_X.removeAt(row);
this->m_Y.removeAt(row);
this->m_Z.removeAt(row);
this->m_R.removeAt(row);
this->m_Part.removeAt(row);
this->m_Feeder.removeAt(row);
this->m_Nozzle.removeAt(row);
this->m_HD.removeAt(row);
this->m_CS.remove(row + removeCount);
this->m_CY.removeAt(row);
this->m_SK.remove(row + removeCount);
this->m_AR.removeAt(row);
this->m_FID.remove(row + removeCount);
this->m_BL.removeAt(row);
}
endRemoveRows();
return true;
}
HzcTableEdit.h
#pragma once
#include <QtWidgets/QWidget>
#include "ui_HzcTableEdit.h"
#include "TableModel.h"
#include "WidgetDelegate.h"
#include <QMenu>
class HzcTableEdit : public QWidget {
Q_OBJECT
public:
HzcTableEdit(QWidget *parent = Q_NULLPTR);
private:
void setInsertRowData(int _row);
bool isSelectionRows();
// 右键显示菜单事件
void contextMenuEvent(QContextMenuEvent * event);
private slots:
void on_selectBtn_clicked();
void on_cancelBtn_clicked();
void on_insertBtn_clicked();
void on_removeBtn_clicked();
void onCheckBox();
void onUnCheckBox();
void onCheckAndUnCheckBox(Qt::CheckState State);
private:
Ui::HzcTableEditClass ui;
TableModel *m_tableModel;
// QComboBox
QMap<int, WidgetDelegate *> m_cBoxDelegateArray;
// 列的初始默认数据
QMap<int, QString> m_columnData;
// No.列
int m_no;
// 存储查找显示的索引
QModelIndexList m_showList;
// 菜单
QMenu *m_menu;
};
HzcTableEdit.cpp
#include "HzcTableEdit.h"
#include <QDebug>
#include <QMessageBox>
HzcTableEdit::HzcTableEdit(QWidget *parent) : QWidget(parent) {
ui.setupUi(this);
this->m_no = 1;
// 单元格的宽度
int headWidth[COLUMN_HEAD_INDEX::COLUMN] = { 40, 100, 80, 80, 80, 80, 100, 120, 100, 40, 30, 30, 30, 30, 30, 30 };
QStringList part, feederList, nozzleList, HDList;
part << "";
feederList << "" << "A";
nozzleList << "" << "A" << "EMPTY" << "CN020" << "CN030" << "CN040" << "CN065" << "CN140" << "CN220" << "CN400";
HDList << "" << "1" << "2" << "3" << "4" << "5" << "6" << "7";
// 行的初始数据
this->m_columnData.insert(COLUMN_HEAD_INDEX::X, "0.000");
this->m_columnData.insert(COLUMN_HEAD_INDEX::Y, "0.000");
this->m_columnData.insert(COLUMN_HEAD_INDEX::Z, "0.000");
this->m_columnData.insert(COLUMN_HEAD_INDEX::R, "0.000");
this->m_columnData.insert(COLUMN_HEAD_INDEX::CY, "1");
this->m_columnData.insert(COLUMN_HEAD_INDEX::AR, "1");
this->m_columnData.insert(COLUMN_HEAD_INDEX::BL, "0");
this->m_tableModel = new TableModel;
ui.tableView->setModel(this->m_tableModel);
this->m_cBoxDelegateArray.insert(COLUMN_HEAD_INDEX::Part, new WidgetDelegate(part));
this->m_cBoxDelegateArray.insert(COLUMN_HEAD_INDEX::Feeder, new WidgetDelegate(feederList));
this->m_cBoxDelegateArray.insert(COLUMN_HEAD_INDEX::Nozzle, new WidgetDelegate(nozzleList));
this->m_cBoxDelegateArray.insert(COLUMN_HEAD_INDEX::HD, new WidgetDelegate(HDList));
// 添加委托
ui.tableView->setItemDelegateForColumn(COLUMN_HEAD_INDEX::Part, this->m_cBoxDelegateArray.value(COLUMN_HEAD_INDEX::Part));
ui.tableView->setItemDelegateForColumn(COLUMN_HEAD_INDEX::Feeder, this->m_cBoxDelegateArray.value(COLUMN_HEAD_INDEX::Feeder));
ui.tableView->setItemDelegateForColumn(COLUMN_HEAD_INDEX::Nozzle, this->m_cBoxDelegateArray.value(COLUMN_HEAD_INDEX::Nozzle));
ui.tableView->setItemDelegateForColumn(COLUMN_HEAD_INDEX::HD, this->m_cBoxDelegateArray.value(COLUMN_HEAD_INDEX::HD));
// 设置水平头文本居中
ui.tableView->horizontalHeader()->setDefaultAlignment(Qt::AlignHCenter);
//设置隔行变色
ui.tableView->setAlternatingRowColors(true);
// 设置最后一列填满表格剩余空间
ui.tableView->horizontalHeader()->setStretchLastSection(true);
// 设置表格行高
ui.tableView->verticalHeader()->setDefaultSectionSize(30);
for (int i = 0; i < COLUMN_HEAD_INDEX::COLUMN; i++) {
// 设置表格列宽
ui.tableView->setColumnWidth(i, headWidth[i]);
}
// 设置用户可以拖动行
//ui.tableView->verticalHeader()->setSectionsMovable(true);
// 设置固定行高
ui.tableView->verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);
//ui.tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
// 设置行表头背景颜色样式为浅黄色
ui.tableView->horizontalHeader()->setStyleSheet("QHeaderView::section{background:#ffff9b;}");
// 设置列表头背景颜色样式为浅蓝色
ui.tableView->verticalHeader()->setStyleSheet("QHeaderView::section{background:#a7fffa;}");
// 设置左上角两个表头相交的区域的颜色样式为浅灰色
ui.tableView->setStyleSheet("QTableCornerButton::section{background:#c2c2c2;}");
this->m_menu = new QMenu(this);
QMenu *childMenu = new QMenu("填充原件");
// 定义菜单子项
QAction *addRowAction = new QAction("插入行");
QAction *removeRowAction = new QAction("删除行");
QAction *skipPointsAction = new QAction("跳过点");
QAction *cancleSkipPointsAction = new QAction("取消跳过点");
QAction *skipJointBoardAction = new QAction("跳过拼版");
QAction *separator = this->m_menu->addSeparator(); // 返回一个分隔符
this->m_menu->addAction(addRowAction);
this->m_menu->addAction(removeRowAction);
this->m_menu->addAction(skipPointsAction);
this->m_menu->addAction(cancleSkipPointsAction);
this->m_menu->addAction(separator);
this->m_menu->addAction(skipJointBoardAction);
this->m_menu->addMenu(childMenu);
connect(addRowAction, SIGNAL(triggered()), this, SLOT(on_insertBtn_clicked()));
connect(removeRowAction, SIGNAL(triggered()), this, SLOT(on_removeBtn_clicked()));
connect(skipPointsAction, SIGNAL(triggered()), this, SLOT(onCheckBox()));
connect(cancleSkipPointsAction, SIGNAL(triggered()), this, SLOT(onUnCheckBox()));
}
void HzcTableEdit::on_selectBtn_clicked() {
// 清空链表
this->m_showList.clear();
QString lineEdit = ui.lineEdit->text();
QString rowStr = "";
// 为空则显示所有行
if (lineEdit.isEmpty()) {
for (int row = 0; row < m_tableModel->rowCount(); row++) {
ui.tableView->showRow(row);
}
return;
}
// 遍历所有行
for (int row = 0; row < m_tableModel->rowCount(); row++) {
// 获得Reference单元格的文本
QModelIndex index = m_tableModel->index(row, COLUMN_HEAD_INDEX::Reference);
rowStr = m_tableModel->data(index).toString();
if (rowStr.isEmpty()) {
// 隐藏当前行
ui.tableView->hideRow(row);
} else {
// Reference列的文本是否与输入框中的文本相等
if (lineEdit.contains(rowStr)) {
ui.tableView->showRow(row);
// 将显示的行索引存入链表中
this->m_showList.append(index);
} else {
ui.tableView->hideRow(row);
}
}
}
}
void HzcTableEdit::on_cancelBtn_clicked() {
ui.lineEdit->setText("");
// 显示所有行
for (int row = 0; row < m_tableModel->rowCount(); row++) {
ui.tableView->showRow(row);
}
// 点击了取消按钮,链表需要清空
this->m_showList.clear();
}
void HzcTableEdit::on_insertBtn_clicked() {
if (!isSelectionRows()) {
QMessageBox::information(this, "提示", "请选中一行!");
return;
}
// 获取所有选中的索引
QModelIndexList indexs = ui.tableView->selectionModel()->selectedIndexes();
if (indexs.size() == 0) {
m_tableModel->insertRows(m_tableModel->rowCount(), 1);
setInsertRowData(m_tableModel->rowCount() - 1);
return;
}
// 获得最后一个索引的行
int row = indexs.last().row();
m_tableModel->insertRows(row + 1, 1);
setInsertRowData(row + 1);
}
void HzcTableEdit::on_removeBtn_clicked() {
if (!isSelectionRows()) {
QMessageBox::information(this, "提示", "请选中一行!");
return;
}
// 移除用户查询后选中的行
if (this->m_showList.size() != 0) {
// 从后往前移除
for (int row = m_showList.size() - 1; row >= 0; row--) {
m_tableModel->removeRow(m_showList[row].row());
}
m_showList.clear();
return;
}
// 获取所有选中列的行(不重复)
QModelIndexList indexs = ui.tableView->selectionModel()->selectedRows();
if (indexs.size() == 0) return;
// 检测用户选择的项是否是连续的
bool successionFlag = true;
for (int row = 0; row < indexs.size(); row++) {
if (row + 1 == indexs.size()) break;
if (indexs[row].row() + 1 != indexs[row + 1].row()) {
successionFlag = false;
break;
}
}
if (successionFlag) {
m_tableModel->removeRows(indexs.first().row(), indexs.size());
} else {
for (int row = indexs.size() - 1; row >= 0; row--) {
m_tableModel->removeRow(indexs[row].row()); // 实际是调用removeRows(indexs[row].row(), 1),进行删除一行
}
}
// 删除完后,对No列进行排序
this->m_no = m_tableModel->rowCount();
for (int row = 0; row < m_no; row++) {
QModelIndex index = m_tableModel->index(row, 0);
m_tableModel->setData(index, QString("%1").arg(row + 1));
}
this->m_no += 1;
}
// 为插入的行设置初始数据
void HzcTableEdit::setInsertRowData(int _row) {
QString value = "";
QModelIndex index0 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::No);
m_tableModel->setData(index0, QString("%1").arg(m_no++));
static int ref = 1;
QModelIndex index1 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::Reference);
m_tableModel->setData(index1, QString("%1").arg(ref++));
QModelIndex index2 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::X);
m_tableModel->setData(index2, m_columnData.value(COLUMN_HEAD_INDEX::X));
QModelIndex index3 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::Y);
m_tableModel->setData(index3, m_columnData.value(COLUMN_HEAD_INDEX::Y));
QModelIndex index4 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::Z);
m_tableModel->setData(index4, m_columnData.value(COLUMN_HEAD_INDEX::Z));
QModelIndex index5 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::R);
m_tableModel->setData(index5, m_columnData.value(COLUMN_HEAD_INDEX::R));
QModelIndex index6 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::Part);
value = this->m_cBoxDelegateArray[COLUMN_HEAD_INDEX::Part]->getCurrentComboBoxData(0);
m_tableModel->setData(index6, value);
QModelIndex index7 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::Feeder);
value = this->m_cBoxDelegateArray[COLUMN_HEAD_INDEX::Feeder]->getCurrentComboBoxData(1);
m_tableModel->setData(index7, value);
QModelIndex index8 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::Nozzle);
value = this->m_cBoxDelegateArray[COLUMN_HEAD_INDEX::Nozzle]->getCurrentComboBoxData(6);
m_tableModel->setData(index8, value);
QModelIndex index9 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::HD);
value = this->m_cBoxDelegateArray[COLUMN_HEAD_INDEX::HD]->getCurrentComboBoxData(1);
m_tableModel->setData(index9, value);
QModelIndex index10 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::CS);
m_tableModel->setData(index10, Qt::CheckState::Unchecked);
QModelIndex index11 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::CY);
m_tableModel->setData(index11, m_columnData.value(COLUMN_HEAD_INDEX::CY));
QModelIndex index12 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::SK);
m_tableModel->setData(index12, Qt::CheckState::Unchecked);
QModelIndex index13 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::AR);
m_tableModel->setData(index13, m_columnData.value(COLUMN_HEAD_INDEX::AR));
QModelIndex index14 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::FID);
m_tableModel->setData(index14, Qt::CheckState::Unchecked);
QModelIndex index15 = m_tableModel->index(_row, COLUMN_HEAD_INDEX::BL);
m_tableModel->setData(index15, m_columnData.value(COLUMN_HEAD_INDEX::BL));
}
// 检查是否选中一整行
bool HzcTableEdit::isSelectionRows() {
// 获取所有选中的索引
QModelIndexList list = ui.tableView->selectionModel()->selectedIndexes();
// 存储被选中的所有行
QVector<int> selectedRows;
// 获得所有选中单元格的行
for each (QModelIndex index in list) {
selectedRows.append(index.row());
}
// 进行排序
std::sort(selectedRows.begin(), selectedRows.end());
// 去除容器内重复元素
auto it = std::unique(selectedRows.begin(), selectedRows.end());
selectedRows.erase(it, selectedRows.end());
// 遍历所有行的单元格,存在有一个单元格没有被选中,则返回false
bool selectedFlag = true;
for (int row = 0; row < selectedRows.count(); row++) {
for (int column = 0; column < COLUMN_HEAD_INDEX::COLUMN; column++) {
QModelIndex index = m_tableModel->index(selectedRows.at(row), column);
// 检测该索引是否被选中
if (ui.tableView->selectionModel()->isSelected(index) == false) {
selectedFlag = false;
break;
}
}
// 为false,直接返回结果
if (selectedFlag == false) return selectedFlag;
}
/* 此处为良好BUG :当用于没有选中任何单元格,也会返回true,是为了默认在行末尾连续插入行 */
return selectedFlag;
}
// 鼠标右键显示菜单事件
void HzcTableEdit::contextMenuEvent(QContextMenuEvent * event) {
if (!isSelectionRows()) {
return;
}
// 菜单出现的位置为当前鼠标的位置
this->m_menu->exec(QCursor::pos());
}
// 跳过点
void HzcTableEdit::onCheckBox() {
onCheckAndUnCheckBox(Qt::CheckState::Checked);
}
// 取消跳过点
void HzcTableEdit::onUnCheckBox() {
onCheckAndUnCheckBox(Qt::CheckState::Unchecked);
}
void HzcTableEdit::onCheckAndUnCheckBox(Qt::CheckState State) {
// 获取所有选中的索引
QModelIndexList list = ui.tableView->selectionModel()->selectedIndexes();
if (list.size() == 0) return;
// 存储被选中的所有行
QVector<int> selectedRows;
// 获得所有选中单元格的行
for each (QModelIndex index in list) {
selectedRows.append(index.row());
}
// 进行排序
std::sort(selectedRows.begin(), selectedRows.end());
// 去除容器内重复元素
auto it = std::unique(selectedRows.begin(), selectedRows.end());
selectedRows.erase(it, selectedRows.end());
for each (int row in selectedRows) {
// 获取到对应的索引
QModelIndex index = m_tableModel->index(row, COLUMN_HEAD_INDEX::SK);
// 将设置索引数据为选中状态
m_tableModel->setData(index, State, Qt::CheckStateRole);
qDebug() << m_tableModel->data(index, Qt::CheckStateRole).toBool();
}
}
如果想拷贝代码下来运行,还得将文章开头链接委托里的代码也一并考下来,方可运行。
总结:
此篇博客也当做是代码记录吧。项目具体实现有兴趣的朋友得自己去看代码了,代码量太多,实在是不知道怎么写。
小项目结合了重写了委托QItemDelegate、模型QAbstractTableModel类,还有QTableVIew的使用方法,三者结合才有此小项目。如果你也有这方面的需求,真的可以研究一下此小项目的代码。