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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Components project.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.0
import QtDesktop 0.2
import "private" as Private
/*
*
* TableView
*
* This component provides an item-view with resizable
* header sections.
*
* You can style the drawn delegate by overriding the itemDelegate
* property. The following properties are supported for custom
* delegates:
*
* Note: Currently only row selection is available for this component
*
* itemheight - default platform size of item
* itemwidth - default platform width of item
* itemselected - if the row is currently selected
* itemvalue - The text for this item
* itemforeground - The default text color for an item
*
* For example:
* itemDelegate: Item {
* Text {
* anchors.verticalCenter: parent.verticalCenter
* color: itemForeground
* elide: Text.ElideRight
* text: itemValue
* }
* }
*
* Data for each row is provided through a model:
*
* ListModel {
* ListElement{ column1: "value 1"; column2: "value 2"}
* ListElement{ column1: "value 3"; column2: "value 4"}
* }
*
* You provide title and size properties on TableColumns
* by setting the default header property :
*
* TableView {
* TableColumn{ role: "column1" ; title: "Column 1" ; width:100}
* TableColumn{ role: "column2" ; title: "Column 2" ; width:200}
* model: datamodel
* }
*
* The header sections are attached to values in the datamodel by defining
* the listmodel property they attach to. Each property in the model, will
* then be shown in each column section.
*
* The view itself does not provide sorting. This has to
* be done on the model itself. However you can provide sorting
* on the model and enable sort indicators on headers.
*
* sortColumn - The index of the currently selected sort header
* sortIndicatorVisible - If sort indicators should be enabled
* sortIndicatorDirection - "up" or "down" depending on state
*
*/
FocusScope{
id: root
property variant model
// Framewidth seems to be 1 regardless of style
property int frameWidth: frame ? frameitem.frameWidth : 0;
width: 200
height: 200
// Cosmetic properties
property bool frame: true
property bool frameAroundContents: styleitem.styleHint("framearoundcontents")
property bool highlightOnFocus: false
property bool alternateRowColor: true
property bool headerVisible: true
// Styling properties
property Component itemDelegate: standardDelegate
property Component rowDelegate: rowDelegate
property Component headerDelegate: headerDelegate
property color backgroundColor: "white"
// Sort properties
property int sortColumn // Index of currently selected sort column
property bool sortIndicatorVisible: false // enables or disables sort indicator
property string sortIndicatorDirection: "down" // "up" or "down" depending on current state
// Item properties
default property alias header: tree.header
property alias horizontalScrollBar: scroller.horizontalScrollBar
property alias verticalScrollBar: scroller.verticalScrollBar
// Viewport properties
property alias contentX: tree.contentX
property alias contentY: tree.contentY
property alias contentHeight : tree.contentHeight
property alias contentWidth: tree.contentWidth
property alias viewportWidth: scroller.availableWidth
property alias viewportHeight: scroller.availableHeight
property alias count: tree.count
property alias cacheBuffer: tree.cacheBuffer
property alias currentIndex: tree.currentIndex // Should this be currentRowIndex?
Accessible.role: Accessible.Table
// Signals
signal activated
Component {
id: standardDelegate
Item {
height: Math.max(16, styleitem.implicitHeight)
property int implicitWidth: sizehint.paintedWidth + 4
Text {
id: label
width: parent.width
anchors.margins: 6
font.pointSize: itemstyle.fontPointSize
anchors.left: parent.left
anchors.right: parent.right
horizontalAlignment: itemTextAlignment
anchors.verticalCenter: parent.verticalCenter
elide: itemElideMode
text: itemValue ? itemValue : ""
color: itemForeground
}
Text {
id: sizehint
font: label.font
text: itemValue ? itemValue : ""
visible: false
}
}
}
StyleItem {
id: itemstyle
elementType: "item"
visible:false
}
Component {
id: nativeDelegate
// This gives more native styling, but might be less performant
StyleItem {
elementType: "item"
text: itemValue
selected: itemSelected
}
}
Component {
id: headerDelegate
StyleItem {
elementType: "header"
activeControl: itemSort
raised: true
sunken: itemPressed
text: itemValue
hover: itemContainsMouse
info: itemPosition
}
}
Component {
id: rowDelegate
StyleItem {
id: rowstyle
elementType: "itemrow"
activeControl: itemAlternateBackground ? "alternate" : ""
selected: itemSelected ? true : false
}
}
Rectangle {
id: colorRect
color: backgroundColor
anchors.fill: frameitem
anchors.margins: frameWidth
anchors.rightMargin: (!frameAroundContents && verticalScrollBar.visible ? verticalScrollBar.width : 0) + frameWidth
anchors.bottomMargin: (!frameAroundContents && horizontalScrollBar.visible ? horizontalScrollBar.height : 0) +frameWidth
}
StyleItem {
id: frameitem
elementType: "frame"
Component.onCompleted: frameWidth = styleitem.pixelMetric("defaultframewidth");
sunken: true
visible: frame
anchors.fill: parent
anchors.rightMargin: frame ? (frameAroundContents ? (verticalScrollBar.visible ? verticalScrollBar.width + 2 * frameMargins : 0) : 0) : 0
anchors.bottomMargin: frame ? (frameAroundContents ? (horizontalScrollBar.visible ? horizontalScrollBar.height + 2 * frameMargins : 0) : 0) : 0
anchors.topMargin: frame ? frameAroundContents : 0
anchors.leftMargin: frame ? frameAroundContents : 0
property int frameWidth
property int scrollbarspacing: styleitem.pixelMetric("scrollbarspacing");
property int frameMargins : frame ? scrollbarspacing : 0
}
MouseArea {
id: mousearea
anchors.fill: tree
property bool autoincrement: false
property bool autodecrement: false
onReleased: {
autoincrement = false
autodecrement = false
}
// Handle vertical scrolling whem dragging mouse outside boundraries
Timer { running: mousearea.autoincrement && verticalScrollBar.visible; repeat: true; interval: 20 ; onTriggered: incrementCurrentIndex()}
Timer { running: mousearea.autodecrement && verticalScrollBar.visible; repeat: true; interval: 20 ; onTriggered: decrementCurrentIndex()}
onPositionChanged: {
if (mouseY > tree.height && pressed) {
if (autoincrement) return;
autodecrement = false;
autoincrement = true;
} else if (mouseY < 0 && pressed) {
if (autodecrement) return;
autoincrement = false;
autodecrement = true;
} else {
autoincrement = false;
autodecrement = false;
}
var y = Math.min(contentY + tree.height - 5, Math.max(mouseY + contentY, contentY));
var newIndex = tree.indexAt(0, y);
if (newIndex >= 0)
tree.currentIndex = tree.indexAt(0, y);
}
onPressed: {
tree.forceActiveFocus()
var x = Math.min(contentWidth - 5, Math.max(mouseX + contentX, 0))
var y = Math.min(contentHeight - 5, Math.max(mouseY + contentY, 0))
tree.currentIndex = tree.indexAt(x, y)
}
onDoubleClicked: {
parent.activated()
}
}
function decrementCurrentIndex() {
scroller.blockUpdates = true;
tree.decrementCurrentIndex();
scroller.verticalValue = contentY;
scroller.blockUpdates = false;
}
function incrementCurrentIndex() {
scroller.blockUpdates = true;
tree.incrementCurrentIndex();
scroller.verticalValue = contentY;
scroller.blockUpdates = false;
}
ListView {
id: tree
property list<TableColumn> header
highlightFollowsCurrentItem: true
model: root.model
interactive: false
anchors.top: tableColumn.bottom
anchors.left: frameitem.left
anchors.right: frameitem.right
anchors.bottom: frameitem.bottom
anchors.margins: frameWidth
anchors.topMargin: -frameWidth
anchors.rightMargin: (!frameAroundContents && verticalScrollBar.visible ? verticalScrollBar.width: 0) + frameWidth
anchors.bottomMargin: (!frameAroundContents && horizontalScrollBar.visible ? horizontalScrollBar.height : 0) + frameWidth
focus: true
clip: true
// Fills extra rows with alternate color
Column {
id: rowfiller
property variant rowHeight: Math.max(1, contentHeight / count)
property int rowCount: height/rowHeight
y: contentHeight
width: parent.width
visible: contentHeight > 0 && alternateRowColor && !verticalScrollBar.visible
height: parent.height - contentHeight
Repeater {
model: visible ? rowfiller.rowCount : 0
StyleItem {
id: rowfill
elementType: "itemrow"
width: rowfiller.width
height: rowfiller.rowHeight
activeControl: (index + count) % 2 === 1 ? "alternate" : ""
}
}
}
Keys.onUpPressed: root.decrementCurrentIndex()
Keys.onDownPressed: root.incrementCurrentIndex()
Keys.onPressed: {
if (event.key == Qt.Key_PageUp) {
verticalScrollBar.value = verticalScrollBar.value - tree.height
} else if (event.key == Qt.Key_PageDown)
verticalScrollBar.value = verticalScrollBar.value + tree.height
}
onContentYChanged: {
scroller.blockUpdates = true
scroller.verticalValue = tree.contentY
verticalScrollBar.value = tree.contentY
scroller.blockUpdates = false
}
onContentXChanged: {
scroller.blockUpdates = true
scroller.horizontalValue = tree.contentX
horizontalScrollBar.value = tree.contentX
scroller.blockUpdates = false
}
delegate: Item {
id: rowitem
width: row.width
height: row.height
anchors.margins: frameWidth
property int rowIndex: model.index
property bool itemAlternateBackground: alternateRowColor && rowIndex % 2 == 1
property variant itemModelData: this.hasOwnProperty("modelData") ? modelData : null
// ## Note the this reference is due to a behavior change in Qt5.0 This needs to be investigated
Loader {
id: rowstyle
// row delegate
sourceComponent: root.rowDelegate
// Row fills the tree width regardless of item size
// But scrollbar should not adjust to it
width: frameitem.width
height: row.height
x: contentX
property bool itemAlternateBackground: rowitem.itemAlternateBackground
property bool itemSelected: rowitem.ListView.isCurrentItem
}
Row {
id: row
anchors.left: parent.left
Repeater {
id: repeater
model: root.header.length
Loader {
id: itemDelegateLoader
visible: header[index].visible
sourceComponent: header[index].delegate ? header[index].delegate : itemDelegate
property variant model: tree.model
property variant role: header[index].role
property variant modelData: itemModelData
width: header[index].width
height: item !== undefined ? item.height : Math.max(16, styleitem.implicitHeight)
function getValue() {
if (header[index].role.length && model.get && model.get(rowIndex)[header[index].role])
return model.get(rowIndex)[header[index].role]
else if (modelData && modelData.hasOwnProperty(header[index].role))
return modelData[header[index].role]
else if (modelData)
return modelData
return ""
}
property variant itemValue: getValue()
property bool itemSelected: rowitem.ListView.isCurrentItem
property color itemForeground: itemSelected ? rowstyleitem.highlightedTextColor : rowstyleitem.textColor
property int rowIndex: rowitem.rowIndex
property int columnIndex: index
property int itemElideMode: header[index].elideMode
property int itemTextAlignment: header[index].textAlignment
}
}
onWidthChanged: tree.contentWidth = width
}
}
}
Text{ id:text }
Item {
id: tableColumn
anchors.top: frameitem.top
anchors.left: frameitem.left
anchors.right: frameitem.right
anchors.margins: frameWidth
clip: true
visible: headerVisible
height: headerVisible ? styleitem.implicitHeight : frameWidth
Behavior on height { NumberAnimation{ duration: 80 } }
Row {
id: headerrow
anchors.top: parent.top
height:parent.height
x: -tree.contentX
Repeater {
id: repeater
property int targetIndex: -1
property int dragIndex: -1
model: header.length
delegate: Item {
z:-index
width: header[index].width
visible: header[index].visible
height: headerrow.height
Loader {
sourceComponent: root.headerDelegate
anchors.fill: parent
property string itemValue: header[index].title
property string itemSort: (sortIndicatorVisible && index == sortColumn) ? (sortIndicatorDirection == "up" ? "up" : "down") : "";
property bool itemPressed: headerClickArea.pressed
property bool itemContainsMouse: headerClickArea.containsMouse
property string itemPosition: header.length === 1 ? "only" :
index===header.length-1 ? "end" :
index===0 ? "beginning" : ""
}
Rectangle{
id: targetmark
width: parent.width
height:parent.height
opacity: (index == repeater.targetIndex && repeater.targetIndex != repeater.dragIndex) ? 0.5 : 0
Behavior on opacity { NumberAnimation{duration:160}}
color: palette.highlight
SystemPalette{id:palette}
}
MouseArea{
id: headerClickArea
drag.axis: Qt.YAxis
hoverEnabled: true
anchors.fill: parent
onClicked: {
if (sortColumn == index)
sortIndicatorDirection = sortIndicatorDirection === "up" ? "down" : "up"
sortColumn = index
}
// Here we handle moving header sections
// NOTE: the direction is different from the master branch
// so this indicates that Im using an invalid assumption on item ordering
onPositionChanged: {
if (pressed) { // only do this while dragging
for (var h = header.length-1 ; h >= 0 ; --h) {
if (drag.target.x > headerrow.children[h].x) {
repeater.targetIndex = h
break
}
}
}
}
onPressed: {
repeater.dragIndex = index
draghandle.x = parent.x
}
onReleased: {
if (repeater.targetIndex >= 0 && repeater.targetIndex != index ) {
// Rearrange the header sections
var items = new Array
for (var i = 0 ; i< header.length ; ++i)
items.push(header[i])
items.splice(index, 1);
items.splice(repeater.targetIndex, 0, header[index]);
header = items
if (sortColumn == index)
sortColumn = repeater.targetIndex
}
repeater.targetIndex = -1
}
drag.maximumX: 1000
drag.minimumX: -1000
drag.target: draghandle
}
Loader {
id: draghandle
property string itemValue: header[index].title
property string itemSort: (sortIndicatorVisible && index == sortColumn) ? (sortIndicatorDirection == "up" ? "up" : "down") : "";
property bool itemPressed: headerClickArea.pressed
property bool itemContainsMouse: headerClickArea.containsMouse
property string itemPosition
parent: tableColumn
width: header[index].width
height: parent.height
sourceComponent: root.headerDelegate
visible: headerClickArea.pressed
opacity: 0.5
}
MouseArea {
id: headerResizeHandle
property int offset: 0
property int minimumSize: 20
anchors.rightMargin: -width/2
width: 16 ; height: parent.height
anchors.right: parent.right
onPositionChanged: {
var newHeaderWidth = header[index].width + (mouseX - offset)
header[index].width = Math.max(minimumSize, newHeaderWidth)
}
property bool found:false
onDoubleClicked: {
var row
var minWidth = 0
var listdata = tree.children[0]
for (row = 0 ; row < listdata.children.length ; ++row){
var item = listdata.children[row+1]
if (item && item.children[1] && item.children[1].children[index] &&
item.children[1].children[index].children[0].hasOwnProperty("implicitWidth"))
minWidth = Math.max(minWidth, item.children[1].children[index].children[0].implicitWidth)
}
if (minWidth)
header[index].width = minWidth
}
onPressedChanged: if(pressed)offset=mouseX
cursorShape: Qt.SplitHCursor
}
}
}
}
Loader {
id: loader
property string itemValue
property string itemSort
property bool itemPressed
property bool itemContainsMouse
property string itemPosition
anchors.top: parent.top
anchors.right: parent.right
anchors.bottom: headerrow.bottom
anchors.rightMargin: -2
sourceComponent: root.headerDelegate
width: root.width - headerrow.width + 2
visible: root.header.length
z:-1
}
}
Private.ScrollAreaHelper {
id: scroller
anchors.fill: parent
anchors.topMargin: styleitem.style == "mac" ? tableColumn.height + frameWidth: 0
scrollSpeed: 2
}
StyleItem {
z: 2
anchors.fill: parent
anchors.margins: -4
visible: highlightOnFocus && parent.activeFocus && styleitem.styleHint("focuswidget")
elementType: "focusframe"
}
StyleItem {
id: styleitem
elementType: "header"
visible:false
contentWidth: 16
contentHeight: fontHeight
}
StyleItem {
id: rowstyleitem
property color textColor: styleHint("textColor")
property color highlightedTextColor: styleHint("highlightedTextColor")
elementType: "item"
visible: false
}
}
|