QT 基于View/Model/Delegate的QTableView/QTreewidget/QCombox

 #include "table_view.h" #include<QApplication> #include<QProgressBar> #include<QComboBox> #include<QStringListModel> #include<QStringList> #include<QLabel> #include <QPainter> #include <QMouseEvent> #include <QStyledItemDelegate> #include <QToolTip> #include <QApplication> table_view::table_view() { } /********************TableViewDelegate********************/ TableDelegate::TableDelegate(QObject *parent) : QStyledItemDelegate(parent) { } QWidget *TableDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem & option , const QModelIndex & index ) const { if(index.column()==1){ QComboBox *combobox = new QComboBox(parent); combobox->addItem("AAA"); combobox->addItem("BBB"); combobox->addItem("CCC"); return combobox; } else{ QLabel *LB = new QLabel(parent); return QStyledItemDelegate::createEditor(LB,option,index); } } //将Model中数据赋值到控件上 void TableDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const { QString value = index.model()->data(index, Qt::EditRole).toString(); if(index.column()==1){ QComboBox *spinBox = static_cast<QComboBox*>(editor); // spinBox->setValue(value); spinBox->addItem(value); } else{ return QStyledItemDelegate::setEditorData(editor,index); } //qDebug()<<value; } //设定模型数据，根据指定项中对应编辑控件的数据 void TableDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const { if(index.column()==1){ QComboBox *combobox = static_cast<QComboBox*>(editor); //spinBox->currentIndex(); QString value = combobox->currentText(); model->setData(index, value, Qt::EditRole); //qDebug()<<value +"~"; } else{ QStyledItemDelegate::setModelData(editor,model,index); } } void TableDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &/* index */) const { editor->setGeometry(option.rect); } /********************TreeWidgetDelegate********************/ TreeWidgetItemDelegate::TreeWidgetItemDelegate(QObject * parent) : QStyledItemDelegate(parent), m_treeView(NULL), m_pixmapHeight(9), m_pixmapWidth(9) { m_expandIconName = ":/new/prefix1/image/arrowBottom.png";//QCoreApplication::applicationDirPath() + "/Resources/Images/arrowBottom.png"; m_collapseIconName = ":/new/prefix1/image/arrowTop.png";//QCoreApplication::applicationDirPath() + "/Resources/Images/arrowTop.png"; } void TreeWidgetItemDelegate::setIconSize(QSize size) { m_pixmapHeight = size.height(); m_pixmapWidth = size.width(); } void TreeWidgetItemDelegate::setExpandIcon(QString expandIconName) { m_expandIconName = expandIconName; } void TreeWidgetItemDelegate::setcollapseIcon(QString collapseIconName) { m_collapseIconName = collapseIconName; } void TreeWidgetItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const { QStyleOptionViewItem viewOption(option); if (viewOption.state & QStyle::State_HasFocus) { viewOption.state = viewOption.state ^ QStyle::State_HasFocus; } QStyledItemDelegate::paint(painter, viewOption, index); bool bExpanded = false; if (m_treeView != NULL) { const QAbstractItemModel *model = index.model(); if (!model->hasChildren(index)) { return; } bExpanded = m_treeView->isExpanded(index); } int height = (viewOption.rect.height() - m_pixmapWidth) / 2; QPixmap pixmap = bExpanded ? QPixmap(m_expandIconName) : QPixmap(m_collapseIconName); QRect decorationRect = QRect(viewOption.rect.left() + viewOption.rect.width() - 30, viewOption.rect.top() + height, m_pixmapHeight, m_pixmapWidth); painter->drawPixmap(decorationRect, pixmap); } bool TreeWidgetItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index) { int height = (option.rect.height() - m_pixmapWidth) / 2; QRect decorationRect = QRect(option.rect.left() + option.rect.width() - 30, option.rect.top() + height, m_pixmapHeight, m_pixmapWidth); QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); if (event->type() == QEvent::MouseButtonPress && decorationRect.contains(mouseEvent->pos())) { emit expanded(index); } if (event->type() == QEvent::MouseMove && decorationRect.contains(mouseEvent->pos())) { bool bExpanded = false; if (m_treeView != NULL) { const QAbstractItemModel *model = index.model(); if (!model->hasChildren(index)) { return false; } bExpanded = m_treeView->isExpanded(index); } QCursor cursor(Qt::PointingHandCursor); QApplication::setOverrideCursor(cursor); QString strText = bExpanded ? QStringLiteral("unfold") : QStringLiteral("expand"); QToolTip::showText(mouseEvent->globalPos(), strText); } else { QCursor cursor(Qt::ArrowCursor); QApplication::setOverrideCursor(cursor); } return QStyledItemDelegate::editorEvent(event, model, option, index); } void TreeWidgetItemDelegate::setView(QTreeView *treeView) { m_treeView = treeView; } /********************TableModel********************/ TableModel::TableModel(QObject *parent) : QAbstractTableModel(parent), arr_row_list(NULL) { } TableModel::~TableModel(void) { arr_row_list = NULL; } void TableModel::setHorizontalHeaderList(QStringList horizontalHeaderList) { horizontal_header_list = horizontalHeaderList; } void TableModel::setVerticalHeaderList(QStringList verticalHeaderList) { vertical_header_list = verticalHeaderList; } int TableModel::rowCount(const QModelIndex &parent) const { if(vertical_header_list.size() > 0) return vertical_header_list.size(); if(NULL == arr_row_list) return 0; else return arr_row_list->size(); } int TableModel::columnCount(const QModelIndex &parent) const { if(horizontal_header_list.size() > 0) return horizontal_header_list.size(); if(NULL == arr_row_list) return 0; else if(arr_row_list->size() < 1) return 0; else return arr_row_list->at(0).size(); } QVariant TableModel::data(const QModelIndex &index, int role) const { if (!index.isValid()) return QVariant(); if(NULL == arr_row_list) return QVariant(); if(arr_row_list->size() < 1) return QVariant(); if (role == Qt::TextAlignmentRole) { return int(Qt::AlignLeft | Qt::AlignVCenter); } else if (role == Qt::DisplayRole) { if(index.row() >= arr_row_list->size()) return QVariant(); if(index.column() >= arr_row_list->at(0).size()) return QVariant(); return arr_row_list->at(index.row()).at(index.column()); } return QVariant(); } QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const { if(role==Qt::DisplayRole) { if(orientation==Qt::Horizontal) // 水平表头 { if(horizontal_header_list.size() > section) return horizontal_header_list[section]; else return QVariant(); } else { if(vertical_header_list.size() > section) return vertical_header_list[section]; // 垂直表头 else retu