--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2011 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 1.1
+import "." 1.0
+import "UIConstants.js" as UI
+
+/**
+ * Class: ScrollDecorator
+ * A ScrollDecorator shows the current position in a scrollable area.
+ */
+Item {
+ id: root
+
+ /**
+ * Property: flickableItem
+ * [Flickable] The Item that should show the ScrollDecorator
+ */
+ property Flickable flickableItem
+
+ property int __topPageMargin: 0
+ property int __bottomPageMargin: 0
+ property int __leftPageMargin: 0
+ property int __rightPageMargin: 0
+ property bool __hasPageWidth : false
+ property bool __hasPageHeight: false
+
+ // These can also be modified (but probably shouldn't)
+ property int __minIndicatorSize: 20
+ property int __hideTimeout: 500
+
+ property bool __alwaysShowIndicator: true
+
+ property Style platformStyle: ScrollDecoratorStyle{}
+
+ //Deprecated, TODO Remove this on w13
+ property alias style: root.platformStyle
+
+ // This function ensures that we allways anchor the decorator correctly according
+ // to the page margins.
+ function __updatePageMargin() {
+ if (!flickableItem)
+ return
+ var p = flickableItem.parent
+ while (p) {
+ if (p.hasOwnProperty("__isPage")) {
+ __hasPageHeight = function() { return p.height == flickableItem.height }
+ __hasPageWidth = function() { return p.width == flickableItem.width }
+ __topPageMargin = function() { return p.anchors.topMargin }
+ __bottomPageMargin = function() { return p.anchors.bottomMargin }
+ __leftPageMargin = function() { return p.anchors.leftMargin }
+ __rightPageMargin = function() { return p.anchors.rightMargin }
+ return;
+ } else {
+ p = p.parent;
+ }
+ }
+ }
+
+ onFlickableItemChanged: { __updatePageMargin() }
+
+ QtObject {
+ id: privateApi
+ function canFlick(direction) {
+ return flickableItem.flickableDirection === direction
+ || flickableItem.flickableDirection === Flickable.HorizontalAndVerticalFlick
+ || flickableItem.flickableDirection === Flickable.AutoFlickDirection;
+ }
+ }
+
+ // Private stuff
+ anchors.fill: flickableItem
+
+ Timer {
+ // Hack to have the indicators flash when the view is shown the first time.
+ // Ideally we would wait until the Flickable is complete, but it doesn't look
+ // possible given the current limitations of QML.
+ interval: 100
+ running: true
+ repeat: false
+ onTriggered: {
+ if (verticalIndicator.shouldShow) {
+ verticalIndicator.state = "visible";
+ verticalIndicator.state = "";
+ }
+ if (horizontalIndicator.shouldShow) {
+ horizontalIndicator.state = "visible";
+ horizontalIndicator.state = "";
+ }
+ }
+ }
+
+ Component {
+ id: verticalSizerWrapper
+ ScrollDecoratorSizerCPP {
+ id: verticalSizer
+ positionRatio: flickableItem ? flickableItem.visibleArea.yPosition : 0
+ sizeRatio: flickableItem ? flickableItem.visibleArea.heightRatio : 0
+ maxPosition: flickableItem ? flickableItem.height : 0
+ minSize: __minIndicatorSize
+ }
+ }
+
+ Component {
+ id: horizontalSizerWrapper
+ ScrollDecoratorSizerCPP {
+ id: horizontalSizer
+ positionRatio: flickableItem ? flickableItem.visibleArea.xPosition : 0
+ sizeRatio: flickableItem ? flickableItem.visibleArea.widthRatio : 0
+ maxPosition: flickableItem ? flickableItem.width : 0
+ minSize: __minIndicatorSize
+ }
+ }
+
+ Loader {id: verticalSizerLoader}
+ Loader {id: horizontalSizerLoader}
+
+ Item {
+ id: verticalIndicator
+ property bool shouldShow: flickableItem != null && ((__alwaysShowIndicator && privateApi.canFlick(Flickable.VerticalFlick)) && (flickableItem.height > 0 && flickableItem.contentHeight > flickableItem.height))
+ opacity: 0
+ anchors.right: parent.right
+ anchors.rightMargin: UI.SCROLLDECORATOR_LONG_MARGIN - (__hasPageWidth ? __rightPageMargin : 0)
+ anchors.top: parent.top
+ anchors.topMargin: UI.SCROLLDECORATOR_SHORT_MARGIN - (__hasPageWidth ? __topPageMargin : 0)
+ anchors.bottom: parent.bottom
+ anchors.bottomMargin: UI.SCROLLDECORATOR_SHORT_MARGIN - (__hasPageWidth ? __bottomPageMargin : 0)
+
+ onShouldShowChanged: {
+ if (shouldShow)
+ verticalSizerLoader.sourceComponent = verticalSizerWrapper;
+ else
+ verticalSizerLoader.sourceComponent = undefined;
+ }
+
+ Image {
+ source: platformStyle.background
+ height: parent.height
+ anchors.right: parent.right
+ }
+ BorderImage {
+ source: platformStyle.indicator
+ border { left: 2; top: 4; right: 2; bottom: 4 }
+ anchors.right: parent.right
+ y: verticalIndicator.shouldShow && verticalSizerLoader.status == Loader.Ready ? verticalSizerLoader.item.position : 0
+ height: verticalIndicator.shouldShow && verticalSizerLoader.status == Loader.Ready ?
+ verticalSizerLoader.item.size - parent.anchors.topMargin - parent.anchors.bottomMargin : 0
+ }
+
+ states: State {
+ name: "visible"
+ when: verticalIndicator.shouldShow && flickableItem.moving
+ PropertyChanges {
+ target: verticalIndicator
+ opacity: 1
+ }
+ }
+
+ transitions: Transition {
+ from: "visible"; to: ""
+ NumberAnimation {
+ properties: "opacity"
+ duration: root.__hideTimeout
+ }
+ }
+ }
+
+ Item {
+ id: horizontalIndicator
+ property bool shouldShow: flickableItem != null && ((__alwaysShowIndicator && privateApi.canFlick(Flickable.HorizontalFlick)) && (flickableItem.width > 0 && flickableItem.contentWidth > flickableItem.width))
+ opacity: 0
+ anchors.bottom: parent.bottom
+ anchors.bottomMargin: UI.SCROLLDECORATOR_LONG_MARGIN - (__hasPageHeight ? __bottomPageMargin : 0)
+ anchors.right: parent.right
+ anchors.rightMargin: UI.SCROLLDECORATOR_SHORT_MARGIN - (__hasPageHeight ? __rightPageMargin : 0)
+ anchors.left: parent.left
+ anchors.leftMargin: UI.SCROLLDECORATOR_SHORT_MARGIN - (__hasPageHeight ? __leftPageMargin : 0)
+
+ onShouldShowChanged: {
+ if (shouldShow)
+ horizontalSizerLoader.sourceComponent = horizontalSizerWrapper;
+ else
+ horizontalSizerLoader.sourceComponent = undefined;
+ }
+
+ Image {
+ source: platformStyle.backgroundHorizontal
+ width: parent.width
+ anchors.left: parent.left
+ anchors.bottom: parent.bottom
+ }
+ BorderImage {
+ source: platformStyle.indicatorHorizontal
+ border { left: 4; top: 2; right: 4; bottom: 2 }
+ anchors.bottom: parent.bottom
+ x: horizontalIndicator.shouldShow && horizontalSizerLoader.status == Loader.Ready ? horizontalSizerLoader.item.position : 0
+ width: horizontalIndicator.shouldShow && horizontalSizerLoader.status == Loader.Ready ?
+ horizontalSizerLoader.item.size - parent.anchors.leftMargin - parent.anchors.rightMargin : 0
+ }
+
+ states: State {
+ name: "visible"
+ when: horizontalIndicator.shouldShow && flickableItem.moving
+ PropertyChanges {
+ target: horizontalIndicator
+ opacity: 1
+ }
+ }
+
+ transitions: Transition {
+ from: "visible"; to: ""
+ NumberAnimation {
+ properties: "opacity"
+ duration: root.__hideTimeout
+ }
+ }
+ }
+}
+
projects / mardrone / blobdiff