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/*
* Copyright (C) 2023 Arseniy Movshev <dodoradio@outlook.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.15
import org.asteroid.controls 1.0
Item {
id: root
property real startTime: 0
property real endTime: 0
property int minLabels: 3 //these min and max numbers of labels are only guidelines for the algorithm, and don't actually set hard limits.
property int maxLabels: 8
property int startValueDivision
onStartTimeChanged: update()
onEndTimeChanged: update()
onMinLabelsChanged: update()
onMaxLabelsChanged: update()
Component.onCompleted: update()
function update() {
listModel.clear()
var delta = endTime - startTime
var interval = 0
if (delta < 60 * maxLabels) { // check 1 minute
if (delta < 60 * minLabels) {
interval = 30 //label every 30s otherwise
} else {
interval = 60
}
startValueDivision = interval * Math.ceil(startTime / interval)
// iterate and populate the list
var currentTime = startValueDivision
var i = 0;
var date
while (currentTime < endTime) {
date = new Date(currentTime*1000)
var value
if (date.getMinutes() == 0 | i == 0) {
value = date.getHours() + (date.getMinutes() < 10 ? ":0" + date.getMinutes().toString() : date.getMinutes().toString())
} else if (date.getMinutes() < 10) {
value = date.getMinutes() < 10 ? ":0" + date.getMinutes().toString() : date.getMinutes().toString()
}
var x = (currentTime - startTime) / delta
listModel.append({"value": value, "x": x})
currentTime = currentTime + interval
i++
}
} else if (delta < 600 * maxLabels) { // check 10 minutes
if (delta < 600 * minLabels) {
interval = 300 //label every 5m otherwise
} else {
interval = 600
}
startValueDivision = interval * Math.ceil(startTime / interval)
// iterate and populate the list
var currentTime = startValueDivision
var i = 0;
var date
while (currentTime < endTime) {
date = new Date(currentTime*1000)
var value
if (date.getMinutes() == 0 | i == 0) {
value = date.getHours() + (date.getMinutes() < 10 ? ":0" + date.getMinutes().toString() : date.getMinutes().toString())
} else if (date.getMinutes() < 10) {
value = date.getMinutes() < 10 ? ":0" + date.getMinutes().toString() : date.getMinutes().toString()
}
var x = (currentTime - startTime) / delta
listModel.append({"value": value, "x": x})
currentTime = currentTime + interval
i++
}
} else if (delta < 14400 * maxLabels) { // check every 4 hours - this is an ugly workaround so that a full day still gets some sort of divisions
if (delta > 7200 * maxLabels) {
interval = 14400 //label every 4h if 1h doesn't work
} else if (delta > 3600 * maxLabels) {
interval = 7200 //label every 2h if 1h doesn't work
} else if (delta < 3600 * minLabels) {
interval = 1800 //label every 30m otherwise
} else {
interval = 3600
}
startValueDivision = interval * Math.ceil(startTime / interval)
// iterate and populate the list
var currentTime = startValueDivision
var i = 0;
var date
while (currentTime < endTime) {
date = new Date(currentTime*1000)
var value
if (date.getMinutes() != 0 | interval != 1800) {
value = date.getHours().toString() + "h"
} else {
value = ":" + date.getMinutes()
}
var x = (currentTime - startTime) / delta
listModel.append({"value": value, "x": x})
currentTime = currentTime + interval
i++
}
} else if (delta < 86400 * maxLabels) { // check days
if (delta < 86400 * minLabels) {
interval = 43200 //label every 12h otherwise
} else {
interval = 86400
}
startValueDivision = interval * Math.ceil(startTime / interval)
// iterate and populate the list
var currentTime = startValueDivision
var i = 0;
var date
while (currentTime < endTime) {
date = new Date(currentTime*1000)
var value = date.getDate().toString() /* we should add am and pm here for 12h mode*/
var x = ((currentTime - startTime) / delta)
listModel.append({"value": value, "x": x})
currentTime = currentTime + interval
i++
}
} else if (delta < 604800 * maxLabels) { // check weeks
interval = 604800
startValueDivision = interval * Math.ceil(startTime / interval)
// iterate and populate the list
var currentTime = startValueDivision
var i = 0;
var date
while (currentTime < endTime) {
date = new Date(currentTime*1000)
var value = date.getDate().toString()
var x = ((currentTime - startTime) / delta)
listModel.append({"value": value, "x": x})
currentTime = currentTime + interval
i++
}
} else { // handle months
console.log("viewing more than several days of data isn't implemented yet. please pester dodoradio about this.")
}
// this is slightly crude - we assume that the min and max label numbers will be set in such a way that halving gets us a reasonable interval.
// we also ignore everything over a number of weeks, as this needs a bit more thought that I don't want to deal with right now. this graph code is stalling too much other development.
}
Repeater {
model: ListModel { id: listModel }
delegate: Label {
text: model.value
font.pixelSize: Dims.w(5)
x: model.x*root.width - width/2
verticalAlignment: Text.AlignVCenter
}
}
}
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