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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Digia Plc 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 2.2
import QtQuick.Controls 1.2
import QtQuick.Controls.Private 1.0
Loader {
id: handle
property Item editor
property int minimum: -1
property int maximum: -1
property int position: -1
property alias delegate: handle.sourceComponent
readonly property alias pressed: mouse.pressed
readonly property real handleX: x + (item ? item.x : 0)
readonly property real handleY: y + (item ? item.y : 0)
readonly property real handleWidth: item ? item.width : 0
readonly property real handleHeight: item ? item.height : 0
property Item control
property QtObject styleData: QtObject {
id: styleData
signal activated()
readonly property alias pressed: mouse.pressed
readonly property alias position: handle.position
readonly property bool hasSelection: editor.selectionStart !== editor.selectionEnd
readonly property real lineHeight: position !== -1 ? editor.positionToRectangle(position).height
: editor.cursorRectangle.height
}
function activate() {
styleData.activated()
}
MouseArea {
id: mouse
anchors.fill: item
enabled: handle.active
property real pressX
property point offset
onPressed: {
Qt.inputMethod.commit()
pressX = mouse.x
var handleRect = editor.positionToRectangle(handle.position)
var centerX = handleRect.x + (handleRect.width / 2)
var centerY = handleRect.y + (handleRect.height / 2)
var center = mapFromItem(editor, centerX, centerY)
offset = Qt.point(mouseX - center.x, mouseY - center.y)
}
onReleased: preventStealing = false
onMouseXChanged: {
if (Math.abs(mouse.x - pressX) >= Settings.dragThreshold)
preventStealing = true
}
onPositionChanged: {
var pt = mapToItem(editor, mouse.x - offset.x, mouse.y - offset.y)
// limit vertically within mix/max coordinates or content bounds
var min = (minimum !== -1) ? minimum : 0
var max = (maximum !== -1) ? maximum : editor.length
pt.y = Math.max(pt.y, editor.positionToRectangle(min).y)
pt.y = Math.min(pt.y, editor.positionToRectangle(max).y)
var pos = editor.positionAt(pt.x, pt.y)
// limit horizontally within min/max character positions
if (minimum !== -1)
pos = Math.max(pos, minimum)
pos = Math.max(pos, 0)
if (maximum !== -1)
pos = Math.min(pos, maximum)
pos = Math.min(pos, editor.length)
handle.position = pos
}
}
}
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