dd SectionScroller
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Marco Martin
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5a4bef41ef
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71
declarativeimports/plasmacomponents/qml/SectionScroller.js
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71
declarativeimports/plasmacomponents/qml/SectionScroller.js
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Components project.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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var _sectionData = [];
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var _sections = [];
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function initSectionData(list) {
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if (!list || !list.model) return;
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_sectionData = [];
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_sections = [];
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var current = "";
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var prop = list.section.property;
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for (var i = 0, count = list.model.count; i < count; i++) {
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var item = list.model.get(i);
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if (item[prop] !== current) {
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current = item[prop];
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_sections.push(current);
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_sectionData.push({ index: i, header: current });
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}
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}
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}
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function closestSection(pos) {
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var tmp = (_sections.length) * pos;
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var val = Math.ceil(tmp) // TODO: better algorithm
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val = val < 2 ? 1 : val;
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return _sections[val-1];
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}
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function indexOf(sectionName) {
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var val = _sectionData[_sections.indexOf(sectionName)].index;
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return val === 0 || val > 0 ? val : -1;
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}
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218
declarativeimports/plasmacomponents/qml/SectionScroller.qml
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218
declarativeimports/plasmacomponents/qml/SectionScroller.qml
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Components project.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 1.1
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import "SectionScroller.js" as Sections
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import org.kde.plasma.core 0.1 as PlasmaCore
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/**
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* It's similar to a ScrollBar or a ScrollDecorator.
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* It's interactive and works on ListViews that have section.property set,
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* so its contents are categorized.
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* An indicator will say to what category the user scrolled to.
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*
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* Useful for things like address books or things sorted by date.
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* Don't use with models too big (thousands of items) because implies
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* loading all the items to memory, as well loses precision.
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*/
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Item {
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id: root
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/**
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* The listview this scroll indicator will work on
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*/
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property ListView listView
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onListViewChanged: {
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if (listView && listView.model)
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internal.initDirtyObserver();
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}
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Connections {
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target: listView
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onModelChanged: {
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if (listView && listView.model)
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internal.initDirtyObserver();
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}
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}
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width: 48
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anchors {
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right: listView.right
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top: listView.top
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bottom: listView.bottom
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}
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RangeModel {
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id: range
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minimumValue: 0
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maximumValue: Math.max(0, listView.contentHeight - listView.height)
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stepSize: 0
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//inverted: true
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positionAtMinimum: handle.height / 2
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positionAtMaximum: root.height - handle.height - handle.height / 2
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value: listView.contentY
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onValueChanged: {
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if (listView.moving) {
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return
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} else {
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listView.contentY = value
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}
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}
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//position: handle.y
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onPositionChanged: {
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if (!dragArea.pressed) {
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handle.y = position
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}
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}
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}
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Rectangle {
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anchors.fill: parent
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color: Qt.rgba(0,0,0,0.3)
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}
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PlasmaCore.Theme {
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id: theme
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}
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Rectangle {
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id: handle
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width: 6
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height: 6
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color: theme.textColor
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opacity: 0.7
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anchors.horizontalCenter: parent.horizontalCenter
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border {
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width: 1
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color: theme.backgroundColor
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}
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onYChanged: {
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if (dragArea.pressed) {
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range.position = y
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}
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sectionLabel.text = Sections.closestSection(y/listView.height)
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}
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Behavior on y {
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NumberAnimation {
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duration: 150
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}
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}
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}
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PlasmaCore.FrameSvgItem {
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imagePath: "widgets/tooltip"
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width: childrenRect.width + margins.left + margins.right
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height: childrenRect.height + margins.top + margins.bottom
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Label {
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id: sectionLabel
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font.pointSize: theme.defaultFont.pointSize*3
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x: parent.margins.left
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y: parent.margins.top
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}
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y: Math.min(root.height-height, Math.max(0, handle.y - height/2))
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anchors {
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//verticalCenter: handle.verticalCenter
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right: parent.left
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}
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opacity: dragArea.pressed?1:0
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Behavior on opacity {
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NumberAnimation {
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duration: 250
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}
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}
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}
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/*Repeater {
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id: sectionsRepeater
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delegate: Label {
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anchors.horizontalCenter: parent.horizontalCenter
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text: Sections._sections[modelData]
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y: Sections._sectionData[modelData].index*(listView.height/listView.model.count)
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}
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}*/
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MouseArea {
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id: dragArea
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anchors.fill: parent
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enabled: scrollbar.enabled
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drag {
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target: handle
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axis: Drag.YAxis
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minimumY: range.positionAtMinimum
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maximumY: range.positionAtMaximum
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}
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onPressed: {
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mouse.accepted = true
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handle.y = mouse.y
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}
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}
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QtObject {
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id: internal
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function initDirtyObserver() {
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Sections.initSectionData(listView);
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function dirtyObserver() {
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if (!internal.modelDirty) {
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internal.modelDirty = true;
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dirtyTimer.running = true;
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}
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}
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if (listView.model.countChanged)
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listView.model.countChanged.connect(dirtyObserver);
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if (listView.model.itemsChanged)
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listView.model.itemsChanged.connect(dirtyObserver);
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if (listView.model.itemsInserted)
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listView.model.itemsInserted.connect(dirtyObserver);
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if (listView.model.itemsMoved)
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listView.model.itemsMoved.connect(dirtyObserver);
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if (listView.model.itemsRemoved)
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listView.model.itemsRemoved.connect(dirtyObserver);
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sectionsRepeater.model = Sections._sections.length
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}
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}
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}
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@ -24,7 +24,9 @@ ToolBar 0.1 ToolBar.qml
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ToolButton 0.1 ToolButton.qml
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ListItem 0.1 ToolButton.qml
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TabBar 0.1 TabBar.qml
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TabButton 0.1 TabButton.qml
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TabGroup 0.1 TabGroup.qml
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SectionScroller 0.1 SectionScroller.qml
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