223 lines
9.3 KiB
C++
223 lines
9.3 KiB
C++
#include "ExQListWidget.h"
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#include "ui_ExQListWidget.h"
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#include <QDateTime>
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ExQListWidget::ExQListWidget(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::ExQListWidget)
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{
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ui->setupUi(this);
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setWindowTitle(QObject::tr("QListWidget和QToolButton用法"));
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setCentralWidget(ui->splitter); //将QSplitter分割，填充满整个分割区 （分别选中左右控件，然后鼠标右键，Lay out -> Horizon ...）
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setActionForToolBtn(); //左侧全部按钮 + 右侧三个按钮关联action
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creatorPopMenu(); //右侧一个按钮 + 顶部ToolBar两个按钮的创建
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ui->listWidget->setContextMenuPolicy(Qt::CustomContextMenu); //设置QListWidget支持右键菜单,这句话一定要有
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}
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ExQListWidget::~ExQListWidget()
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{
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delete ui;
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}
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//action控件的槽函数+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//actListInit初始化ListWidget的列表项listWidget
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void ExQListWidget::on_actListInit_triggered()
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{
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QListWidgetItem* item; //每一行都是一个QListWidgetItem
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QIcon icon;
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icon.addFile(":/images/github.png");
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bool chk = ui->checkBox->isChecked(); //是否可编辑
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ui->listWidget->clear();
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for (int i = 0; i < 13; i++) {
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item = new QListWidgetItem();//(ui->listWidget); //创建一个item
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item->setText(QString("初始化 第%1个项item").arg(i)); //设置文字
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item->setIcon(icon); //设置icon图标
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item->setCheckState(Qt::Unchecked); //设置选中方式
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if (chk) //可编辑
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item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
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else
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item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
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ui->listWidget->addItem(item); //添加项item到listWidget里面
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}
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}
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//actInsert在ListWidget的列表项中插入一个项item
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void ExQListWidget::on_actInsert_triggered()
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{
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QListWidgetItem* item; //每一行都是一个QListWidgetItem
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QIcon icon;
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icon.addFile(":/images/gril.png");
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bool chk = ui->checkBox->isChecked(); //是否可编辑
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item = new QListWidgetItem(); //创建一个item
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item->setText(QString("插入一个项item: " + QDateTime::currentDateTime().toString("yyyy-mm-dd hh:MM:ss:zzz"))); //设置文字
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item->setIcon(icon); //设置icon图标
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item->setCheckState(Qt::Unchecked); //设置选中方式
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if (chk) //可编辑
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item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
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else
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item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
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ui->listWidget->insertItem(ui->listWidget->currentRow(), item); //添加项item到listWidget里面
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}
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//actClear清空ListWidget的所有列表项
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void ExQListWidget::on_actClear_triggered()
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{
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ui->listWidget->clear();
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}
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//actDel删除一个指定的ListWidget的列表项
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void ExQListWidget::on_actDel_triggered()
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{
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int row = ui->listWidget->currentRow();
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QListWidgetItem* item = ui->listWidget->takeItem(row); //只是移除为row的item（并不删除对象）
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delete item; //手动删除对象
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}
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//actAdd添加一个指定的ListWidget的列表项
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void ExQListWidget::on_actAdd_triggered()
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{
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QListWidgetItem* item; //每一行都是一个QListWidgetItem
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QIcon icon;
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icon.addFile(":/images/TREE.png");
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bool chk = ui->checkBox->isChecked(); //是否可编辑
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item = new QListWidgetItem(); //创建一个item
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item->setText(QString("添加一个项item: " + QDateTime::currentDateTime().toString("yyyy-mm-dd hh:MM:ss:zzz"))); //设置文字
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item->setIcon(icon); //设置icon图标
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item->setCheckState(Qt::Unchecked); //设置选中方式
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if (chk) //可编辑
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item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsUserTristate | Qt::ItemIsEnabled);
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else
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item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserTristate | Qt::ItemIsEnabled);
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ui->listWidget->addItem(item); //添加项item到listWidget里面
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}
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//设置全选
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void ExQListWidget::on_actSelAll_triggered()
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{
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int nCount = ui->listWidget->count();
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for (int i = 0; i < nCount; i++) {
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QListWidgetItem* item = ui->listWidget->item(i);
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item->setCheckState(Qt::Checked);
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}
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}
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//设置全不选
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void ExQListWidget::on_actSelNone_triggered()
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{
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int nCount = ui->listWidget->count();
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for (int i = 0; i < nCount; i++) {
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QListWidgetItem* item = ui->listWidget->item(i);
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item->setCheckState(Qt::Unchecked);
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}
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}
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//设置反选
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void ExQListWidget::on_actSelInvs_triggered()
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{
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int nCount = ui->listWidget->count();
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for (int i = 0; i < nCount; i++) {
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QListWidgetItem* item = ui->listWidget->item(i);
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if (item->checkState() == Qt::Checked)
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item->setCheckState(Qt::Unchecked);
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else
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item->setCheckState(Qt::Checked);
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//设置QListWidget的当前item发生变化，触发的信号,会在右侧显示出来
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void ExQListWidget::on_listWidget_currentItemChanged(QListWidgetItem *current, QListWidgetItem *previous)
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{
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if (current != nullptr) {
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if (previous == nullptr)
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ui->lineEditRight->setText(QString("当前项:%1； 前一项%2").arg(current->text()).arg("不存在"));
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else
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ui->lineEditRight->setText(QString("当前项:%1； 前一项%2").arg(current->text()).arg(previous->text()));
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}
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}
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//左侧五个按钮， 右侧右边三个按钮 进行QToolButton和action 关联
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void ExQListWidget::setActionForToolBtn()
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{
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//左侧,第一页的五个按钮
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ui->toolBtnInit->setDefaultAction(ui->actListInit);
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ui->toolBtnClear->setDefaultAction(ui->actClear);
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ui->toolBtnInsert->setDefaultAction(ui->actInsert);
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ui->toolBtnAdd->setDefaultAction(ui->actAdd);
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ui->toolBtnDelete->setDefaultAction(ui->actDel);
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//右侧 右边的三个按钮
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ui->toolBtnSelAll->setDefaultAction(ui->actSelAll);
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ui->toolBtnSelNone->setDefaultAction(ui->actSelInvs);
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ui->toolBtnSelInvs->setDefaultAction(ui->actSelNone);
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}
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//ToolBar 添加项选择（带下拉框） 和退出；右侧一个按钮也添加一个项的选择
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void ExQListWidget::creatorPopMenu()
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{
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//创建菜单
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QMenu* menu = new QMenu(this); //创建弹出式菜单
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menu->addAction(ui->actSelAll);
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menu->addAction(ui->actSelInvs);
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menu->addAction(ui->actSelNone);
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//右侧ListWidget， 其上方的toolBtn按钮
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//设置toolBtnSelectItem的多个属性：PopupMode、ToolButtonStyle等（在Design已经设置）
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ui->toolBtnSelectItem->setDefaultAction(ui->actSelPopMenu); //关联action
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ui->toolBtnSelectItem->setMenu(menu); //设置下拉菜单menu
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//工具栏QToolBar上面的下拉菜单样式按钮
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QToolButton* toolBtn = new QToolButton(this);
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toolBtn->setPopupMode(QToolButton::InstantPopup); //下拉式菜单样式属性
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toolBtn->setToolButtonStyle(Qt::ToolButtonTextUnderIcon); //设置汉字出现在icon下面
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toolBtn->setDefaultAction(ui->actSelPopMenu); //关联action
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toolBtn->setMenu(menu); //关联菜单
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ui->toolBar->addSeparator(); //添加隔栏
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ui->toolBar->addWidget(toolBtn); //添加到工具栏
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//添加退出按钮
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ui->toolBar->addSeparator();
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ui->toolBar->addAction(ui->actExit); //添加退出按钮
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}
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//鼠标右键自定义快捷菜单
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void ExQListWidget::on_listWidget_customContextMenuRequested(const QPoint &pos)
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{
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qDebug()<<"11111111";
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Q_UNUSED(pos)
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QMenu* menu = new QMenu(this); //创建菜单
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menu->addAction(ui->actListInit);
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menu->addAction(ui->actAdd);
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menu->addAction(ui->actDel);
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menu->addAction(ui->actClear);
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menu->addAction(ui->actInsert);
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menu->addSeparator();
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menu->addAction(ui->actSelAll);
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menu->addAction(ui->actSelNone);
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menu->addAction(ui->actSelInvs);
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menu->exec(QCursor::pos()); //在鼠标光标位置显示右键快捷菜单
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delete menu; //手工创建的指针必须手工删除
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}
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//退出
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void ExQListWidget::on_actExit_triggered()
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{
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this->close();
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}
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