阻抗弹窗
This commit is contained in:
zxj
@@ -0,0 +1,196 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** Copyright (C) 2016 The Qt Company Ltd.
|
||||
** Contact: https://www.qt.io/licensing/
|
||||
**
|
||||
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
|
||||
**
|
||||
** $QT_BEGIN_LICENSE:LGPL$
|
||||
** Commercial License Usage
|
||||
** Licensees holding valid commercial Qt licenses may use this file in
|
||||
** accordance with the commercial license agreement provided with the
|
||||
** Software or, alternatively, in accordance with the terms contained in
|
||||
** a written agreement between you and The Qt Company. For licensing terms
|
||||
** and conditions see https://www.qt.io/terms-conditions. For further
|
||||
** information use the contact form at https://www.qt.io/contact-us.
|
||||
**
|
||||
** GNU Lesser General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU Lesser
|
||||
** General Public License version 3 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.LGPL3 included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU Lesser General Public License version 3 requirements
|
||||
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
|
||||
**
|
||||
** GNU General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU
|
||||
** General Public License version 2.0 or (at your option) the GNU General
|
||||
** Public license version 3 or any later version approved by the KDE Free
|
||||
** Qt Foundation. The licenses are as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
|
||||
** included in the packaging of this file. Please review the following
|
||||
** information to ensure the GNU General Public License requirements will
|
||||
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
|
||||
** https://www.gnu.org/licenses/gpl-3.0.html.
|
||||
**
|
||||
** $QT_END_LICENSE$
|
||||
**
|
||||
****************************************************************************/
|
||||
|
||||
import QtQuick 2.2
|
||||
|
||||
QtObject {
|
||||
|
||||
property int count: 0
|
||||
signal selectionChanged
|
||||
|
||||
property bool __dirty: false
|
||||
property var __ranges: []
|
||||
|
||||
function forEach (callback) {
|
||||
if (!(callback instanceof Function)) {
|
||||
console.warn("TableViewSelection.forEach: argument is not a function")
|
||||
return;
|
||||
}
|
||||
__forEach(callback, -1)
|
||||
}
|
||||
|
||||
function contains(index) {
|
||||
for (var i = 0 ; i < __ranges.length ; ++i) {
|
||||
if (__ranges[i][0] <= index && index <= __ranges[i][1])
|
||||
return true;
|
||||
else if (__ranges[i][0] > index)
|
||||
return false;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
function clear() {
|
||||
__ranges = []
|
||||
__dirty = true
|
||||
count = 0
|
||||
selectionChanged()
|
||||
}
|
||||
|
||||
function selectAll() { select(0, rowCount - 1) }
|
||||
function select(first, last) { __select(true, first, last) }
|
||||
function deselect(first, last) { __select(false, first, last) }
|
||||
|
||||
// --- private section ---
|
||||
|
||||
function __printRanges() {
|
||||
var out = ""
|
||||
for (var i = 0 ; i < __ranges.length ; ++ i)
|
||||
out += ("{" + __ranges[i][0] + "," + __ranges[i][1] + "} ")
|
||||
print(out)
|
||||
}
|
||||
|
||||
function __count() {
|
||||
var sum = 0
|
||||
for (var i = 0 ; i < __ranges.length ; ++i) {
|
||||
sum += (1 + __ranges[i][1] - __ranges[i][0])
|
||||
}
|
||||
return sum
|
||||
}
|
||||
|
||||
function __forEach (callback, startIndex) {
|
||||
__dirty = false
|
||||
var i, j
|
||||
|
||||
for (i = 0 ; i < __ranges.length && !__dirty ; ++i) {
|
||||
for (j = __ranges[i][0] ; !__dirty && j <= __ranges[i][1] ; ++j) {
|
||||
if (j >= startIndex)
|
||||
callback.call(this, j)
|
||||
}
|
||||
}
|
||||
|
||||
// Restart iteration at last index if selection changed
|
||||
if (__dirty)
|
||||
return __forEach(callback, j)
|
||||
}
|
||||
|
||||
function __selectOne(index) {
|
||||
__ranges = [[index, index]]
|
||||
__dirty = true
|
||||
count = 1
|
||||
selectionChanged();
|
||||
}
|
||||
|
||||
function __select(select, first, last) {
|
||||
|
||||
var i, range
|
||||
var start = first
|
||||
var stop = first
|
||||
var startRangeIndex = -1
|
||||
var stopRangeIndex = -1
|
||||
var newRangePos = 0
|
||||
|
||||
if (first < 0 || last < 0 || first >= rowCount || last >=rowCount) {
|
||||
console.warn("TableViewSelection: index out of range")
|
||||
return
|
||||
}
|
||||
|
||||
if (last !== undefined) {
|
||||
start = first <= last ? first : last
|
||||
stop = first <= last ? last : first
|
||||
}
|
||||
|
||||
if (select) {
|
||||
|
||||
// Find beginning and end ranges
|
||||
for (i = 0 ; i < __ranges.length; ++ i) {
|
||||
range = __ranges[i]
|
||||
if (range[0] > stop + 1) continue; // above range
|
||||
if (range[1] < start - 1) { // below range
|
||||
newRangePos = i + 1
|
||||
continue;
|
||||
}
|
||||
if (startRangeIndex === -1)
|
||||
startRangeIndex = i
|
||||
stopRangeIndex = i
|
||||
}
|
||||
|
||||
if (startRangeIndex !== -1)
|
||||
start = Math.min(__ranges[startRangeIndex][0], start)
|
||||
if (stopRangeIndex !== -1)
|
||||
stop = Math.max(__ranges[stopRangeIndex][1], stop)
|
||||
|
||||
if (startRangeIndex === -1)
|
||||
startRangeIndex = newRangePos
|
||||
|
||||
__ranges.splice(Math.max(0, startRangeIndex),
|
||||
1 + stopRangeIndex - startRangeIndex, [start, stop])
|
||||
|
||||
} else {
|
||||
|
||||
// Find beginning and end ranges
|
||||
for (i = 0 ; i < __ranges.length; ++ i) {
|
||||
range = __ranges[i]
|
||||
if (range[1] < start) continue; // below range
|
||||
if (range[0] > stop) continue; // above range
|
||||
if (startRangeIndex === -1)
|
||||
startRangeIndex = i
|
||||
stopRangeIndex = i
|
||||
}
|
||||
|
||||
// Slice ranges accordingly
|
||||
if (startRangeIndex >= 0 && stopRangeIndex >= 0) {
|
||||
var startRange = __ranges[startRangeIndex]
|
||||
var stopRange = __ranges[stopRangeIndex]
|
||||
var length = 1 + stopRangeIndex - startRangeIndex
|
||||
if (start <= startRange[0] && stop >= stopRange[1]) { //remove
|
||||
__ranges.splice(startRangeIndex, length)
|
||||
} else if (start - 1 < startRange[0] && stop <= stopRange[1]) { //cut front
|
||||
__ranges.splice(startRangeIndex, length, [stop + 1, stopRange[1]])
|
||||
} else if (start - 1 < startRange[1] && stop >= stopRange[1]) { // cut back
|
||||
__ranges.splice(startRangeIndex, length, [startRange[0], start - 1])
|
||||
} else { //split
|
||||
__ranges.splice(startRangeIndex, length, [startRange[0], start - 1], [stop + 1, stopRange[1]])
|
||||
}
|
||||
}
|
||||
}
|
||||
__dirty = true
|
||||
count = __count() // forces a re-evaluation of indexes in the delegates
|
||||
selectionChanged()
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user