VerticalHeaderView QML Type

Offers a vertical header view to accompany a TableView . 更多...

import 语句：	import QtQuick.Controls
继承：	TableView

• 所有成员列表，包括继承成员

特性

• model : QVariant
• syncView : TableView
• textRole : QString

详细描述

A VerticalHeaderView provides a styled table header. It can either be used as an independent view or header for a TableView .

You can add a header for a TableView by assigning a VerticalHeaderView to the TableView::syncView property. The header and the table will then be kept in sync while flicking.

By default, VerticalHeaderView displays header data 从 sync view's model . If you don't wish to use this model, you can assign a different model to the model property. If you assign a model that is a QAbstractItemModel , its header data will be used. Otherwise the data in the model will be used directly (for example, if you assign a model that is simply an array of strings).

注意： In order to show the header data of a QAbstractItemModel , VerticalHeaderView will internally wrap the model's header data in an independent proxy model. This model shares no model items with the application model . This means that if you call functions such as index (), the model index you get back will belong to the proxy model and not the application model.

默认情况下， textRole 被设为 "display" , meaning that data from the model's Qt::DisplayRole will be used. You can set this to another role name in order to have that data displayed instead.

The application is responsible for placing the header at the correct location in the scene. You can add as many headers as you want to a single TableView , which can be useful if you for example want to place headers on all four sides of the table.

The following snippet shows how you can add a horizontal and vertical header view to a table view:

import QtQuick
import QtQuick.Controls
import Qt.labs.qmlmodels
ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("HeaderView")
    Rectangle {
        anchors.fill: parent
        // The background color will show through the cell
        // spacing, and therefore become the grid line color.
        color: Qt.styleHints.appearance === Qt.Light ? palette.mid : palette.midlight
        HorizontalHeaderView {
            id: horizontalHeader
            anchors.left: tableView.left
            anchors.top: parent.top
            syncView: tableView
            clip: true
        }
        VerticalHeaderView {
            id: verticalHeader
            anchors.top: tableView.top
            anchors.left: parent.left
            syncView: tableView
            clip: true
        }
        TableView {
            id: tableView
            anchors.left: verticalHeader.right
            anchors.top: horizontalHeader.bottom
            anchors.right: parent.right
            anchors.bottom: parent.bottom
            clip: true
            columnSpacing: 1
            rowSpacing: 1
            model: TableModel {
                TableModelColumn { display: "name" }
                TableModelColumn { display: "color" }
                rows: [
                    {
                        "name": "cat",
                        "color": "black"
                    },
                    {
                        "name": "dog",
                        "color": "brown"
                    },
                    {
                        "name": "bird",
                        "color": "white"
                    }
                ]
            }
            delegate: Rectangle {
                implicitWidth: 100
                implicitHeight: 20
                color: palette.base
                Label {
                    text: display
                }
            }
        }
    }
					

A VerticalHeaderView will have resizableColumns 设为 true 在默认情况下。

另请参阅 HorizontalHeaderView .

特性文档编制

model : QVariant

This property holds the model providing data for the vertical header view.

When model is not explicitly set, the header will use the syncView 's model once syncView 有设置。

If model is a QAbstractTableModel , its vertical headerData() will be accessed.

If model is a QAbstractItemModel other than QAbstractTableModel , model's data() will be accessed.

Otherwise, the behavior is same as setting TableView::model .

另请参阅 TableView , model ，和 QAbstractTableModel .

syncView : TableView

此特性保持 TableView to synchronize with.

Once this property is bound to another TableView , both header and table will synchronize with regard to column widths, column spacing, and flicking vertically.

若 model is not explicitly set, then the header will use the syncView's model to label the columns.

另请参阅 model and TableView .

textRole : QString

This property holds the model role used to display text in each header cell.

When the model has multiple roles, textRole can be set to determine which role should be displayed.

If model is a QAbstractItemModel then it will default to "display"; otherwise it is empty.

A warning is given if the model's roleNames () doesn't provide the role specified in textRole. The warning can be silenced by setting the textRole.

另请参阅 QAbstractItemModel::roleNames ().

内容

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• 详细描述