Add ScrollBar component
- The stepButtons are not yet implemented Signed-off-by: Daker Fernandes Pinheiro <dakerfp@gmail.com>
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Daker Fernandes Pinheiro
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@ -1,5 +1,5 @@
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/*
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* Copyright (C) 2010 by Marco Martin <mart@kde.org>
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* Copyright (C) 2011 by Daker Fernandes Pinheiro <dakerfp@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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@ -17,91 +17,179 @@
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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import Qt 4.7
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import QtQuick 1.0
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import org.kde.plasma.core 0.1 as PlasmaCore
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import QtQuick 1.0
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import org.kde.plasma.core 0.1 as PlasmaCore
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PlasmaCore.FrameSvgItem {
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id: scrollBar
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width: orientation==Qt.Horizontal?200:22
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height: orientation==Qt.Horizontal?22:200
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// TODO: add support mouse wheel and key events
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Item {
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id: scrollbar
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property int minimum: 0
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property int maximum: 100
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property int value: 0
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property string orientation: Qt.Horizontal
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// Common API
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property Flickable flickableItem: null
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onValueChanged: {
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if (drag.state != "dragging") {
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if (orientation == Qt.Horizontal) {
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drag.x = (value/(maximum-minimum))*(scrollBar.width - drag.width)
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} else {
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drag.y = (value/(maximum-minimum))*(scrollBar.height - drag.height)
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// Plasma API
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property int orientation: Qt.Horizontal
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property bool animated: false
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property bool inverted: false
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property bool updateValueWhileDragging: true
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property alias stepSize: range.stepSize
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property alias pressed: mouseArea.pressed
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// Convinience API
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property bool _isVertical: orientation == Qt.Vertical
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width: _isVertical ? 22 : 200
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height: _isVertical ? 200 : 22
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visible: flickableItem && handle.width < contents.width
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Item {
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id: contents
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width: _isVertical ? scrollbar.height : scrollbar.width
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height: _isVertical ? scrollbar.width : scrollbar.height
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rotation: _isVertical ? -90 : 0
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anchors.centerIn: parent
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PlasmaCore.RangeModel {
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id: range
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minimumValue: 0
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maximumValue: {
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var diff;
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if (_isVertical)
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diff = flickableItem.contentHeight - flickableItem.height;
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else
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diff = flickableItem.contentWidth - flickableItem.width;
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return Math.max(0, diff);
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}
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}
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}
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stepSize: 0.0
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inverted: _isVertical ? !scrollbar.inverted : scrollbar.inverted
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positionAtMinimum: 0 + handle.width / 2
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positionAtMaximum: contents.width - handle.width / 2
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value: _isVertical ? flickableItem.contentY : flickableItem.contentX
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onValueChanged: {
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if (flickableItem.flicking)
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return;
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imagePath: "widgets/scrollbar"
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prefix: orientation==Qt.Horizontal?"background-horizontal":"background-vertical"
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if (_isVertical)
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flickableItem.contentY = value;
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else
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flickableItem.contentX = value;
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}
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position: handle.x
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onPositionChanged: { handle.x = position; }
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PlasmaCore.FrameSvgItem {
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id: drag
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anchors.top: orientation==Qt.Horizontal?parent.top:null
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anchors.bottom: orientation==Qt.Horizontal?parent.bottom:null
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anchors.left: orientation==Qt.Horizontal?null:parent.left
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anchors.right: orientation==Qt.Horizontal?null:parent.right
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state: "normal"
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width: (orientation == Qt.Horizontal)?Math.max(12, (parent.width*1/(scrollBar.maximum-scrollBar.minimum))):0
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height: (orientation != Qt.Horizontal)?Math.max(12, (parent.height*1/(scrollBar.maximum-scrollBar.minimum))):0
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x: 0
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y: 0
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onXChanged: {
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if (orientation == Qt.Horizontal && state == "dragging") {
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value = (maximum - minimum)*(x/(scrollBar.width-width))
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}
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}
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onYChanged: {
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if (orientation != Qt.Horizontal && state == "dragging") {
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value = (maximum - minimum)*(x/(scrollBar.height-height))
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}
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}
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Behavior on x {
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NumberAnimation {
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duration: 200
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}
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}
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Behavior on y {
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NumberAnimation {
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duration: 200
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}
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}
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PlasmaCore.FrameSvgItem {
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id: groove
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imagePath: "widgets/scrollbar"
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prefix: "slider"
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MouseArea {
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anchors.fill: parent
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hoverEnabled: true
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imagePath: "widgets/scrollbar"
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prefix: "background-horizontal"
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}
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drag.target: parent;
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drag.axis: orientation == Qt.Horizontal?"XAxis":"YAxis"
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drag.minimumX: 0;
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drag.maximumX: scrollBar.width-drag.width;
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drag.minimumY: 0;
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drag.maximumY: scrollBar.height-drag.height;
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PlasmaCore.FrameSvgItem {
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id: handle
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transform: Translate { x: - handle.width / 2 }
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x: fakeHandle.x
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anchors.verticalCenter: groove.verticalCenter
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width: {
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var ratio;
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if (_isVertical)
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ratio = flickableItem.visibleArea.heightRatio;
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else
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ratio = flickableItem.visibleArea.widthRatio;
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return ratio * parent.width;
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}
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height: parent.height - margins.top // TODO: check mergin
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imagePath: "widgets/scrollbar"
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prefix: {
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if (scrollbar.pressed)
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return "sunken-slider";
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if (scrollbar.activeFocus || mouseArea.containsMouse)
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return "mouseover-slider";
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else
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return "slider";
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}
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Behavior on x {
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id: behavior
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enabled: !mouseArea.drag.active && scrollbar.animated &&
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!flickableItem.flicking
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PropertyAnimation {
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duration: behavior.enabled ? 150 : 0
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easing.type: Easing.OutSine
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}
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}
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}
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Item {
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id: fakeHandle
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width: handle.width
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height: handle.height
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transform: Translate { x: - handle.width / 2 }
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}
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MouseArea {
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id: mouseArea
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anchors.fill: parent
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drag {
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target: fakeHandle
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axis: Drag.XAxis
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minimumX: range.positionAtMinimum
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maximumX: range.positionAtMaximum
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}
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onEntered: drag.prefix = "mouseover-slider"
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onExited: drag.prefix = "slider"
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onPressed: {
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drag.prefix = "sunken-slider"
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drag.state = "dragging"
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// Clamp the value
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var newX = Math.max(mouse.x, drag.minimumX);
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newX = Math.min(newX, drag.maximumX);
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// Debounce the press: a press event inside the handler will not
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// change its position, the user needs to drag it.
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if (Math.abs(newX - fakeHandle.x) > handle.width / 2)
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range.position = newX;
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scrollbar.forceActiveFocus();
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}
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onReleased: {
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containsMouse?drag.prefix = "mouseover-slider":drag.prefix = "slider"
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drag.state = "normal"
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// If we don't update while dragging, this is the only
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// moment that the range is updated.
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if (!scrollbar.updateValueWhileDragging)
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range.position = fakeHandle.x;
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}
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}
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}
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// Range position normally follow fakeHandle, except when
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// 'updateValueWhileDragging' is false. In this case it will only follow
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// if the user is not pressing the handle.
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Binding {
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when: updateValueWhileDragging || !mouseArea.pressed
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target: range
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property: "position"
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value: fakeHandle.x
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}
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// During the drag, we simply ignore position set from the range, this
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// means that setting a value while dragging will not "interrupt" the
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// dragging activity.
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Binding {
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when: !mouseArea.drag.active
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target: fakeHandle
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property: "x"
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value: range.position
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}
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}
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@ -26,10 +26,11 @@ Rectangle {
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color: "lightgrey"
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Flickable {
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id: buttonPage
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id: page
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anchors.fill: parent
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contentWidth: 1200
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contentWidth: 2200
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contentHeight: 600
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Row {
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x: 30
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@ -211,6 +212,71 @@ Rectangle {
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text: slider2.value
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}
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}
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Column {
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spacing: 20
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Text {
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font.pixelSize: 20
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text: "Scroll Bar"
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}
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ListView {
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id: scrollList
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width: 200
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height: 200
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clip: true
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model: 100
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delegate: Text {
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width: 200
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height: 18
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text: index
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}
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PlasmaComponents.ScrollBar {
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orientation: Qt.Vertical
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flickableItem: parent
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animated: true
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anchors {
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top: parent.top
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right: parent.right
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bottom: horizontalScrollBar.top
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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: "grey"
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opacity: 0.3
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}
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}
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}
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}
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}
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PlasmaComponents.ScrollBar {
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id: horizontalScrollBar
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flickableItem: page
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animated: true
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anchors {
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left: parent.left
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right: verticalScrollBar.left
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bottom: parent.bottom
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}
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}
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PlasmaComponents.ScrollBar {
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id: verticalScrollBar
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orientation: Qt.Vertical
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flickableItem: page
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animated: true
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anchors {
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top: parent.top
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right: parent.right
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bottom: horizontalScrollBar.top
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}
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}
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}
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