183 lines
7.9 KiB
JavaScript
183 lines
7.9 KiB
JavaScript
/**
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* LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
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* Copyright (C) 2022 Ad5001
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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 General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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.pragma library
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.import "common.js" as Common
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.import "../objects.js" as Objects
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.import "../mathlib.js" as MathLib
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.import "../parameters.js" as P
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.import "../math/latex.js" as Latex
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class XCursor extends Common.DrawableObject {
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static type(){return 'X Cursor'}
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static displayType(){return qsTr('X Cursor')}
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static displayTypeMultiple(){return qsTr('X Cursors')}
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static properties() {return {
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[QT_TRANSLATE_NOOP('prop','x')]: 'Expression',
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[QT_TRANSLATE_NOOP('prop','targetElement')]: new P.ObjectType('ExecutableObject'),
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[QT_TRANSLATE_NOOP('prop','labelPosition')]: P.Enum.Position,
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[QT_TRANSLATE_NOOP('prop','approximate')]: 'boolean',
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[QT_TRANSLATE_NOOP('prop','rounding')]: 'number',
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[QT_TRANSLATE_NOOP('prop','displayStyle')]: new P.Enum(
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'— — — — — — —',
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'⸺⸺⸺⸺⸺⸺',
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'• • • • • • • • • •'
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),
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[QT_TRANSLATE_NOOP('prop','targetValuePosition')]: P.Enum.XCursorValuePosition,
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}}
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constructor(name = null, visible = true, color = null, labelContent = 'name + value',
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x = 1, targetElement = null, labelPosition = 'left', approximate = true,
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rounding = 3, displayStyle = '— — — — — — —', targetValuePosition = 'Next to target') {
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if(name == null) name = Common.getNewName('X')
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super(name, visible, color, labelContent)
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this.type = 'X Cursor'
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this.approximate = approximate
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this.rounding = rounding
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if(typeof x == 'number' || typeof x == 'string') x = new MathLib.Expression(x.toString())
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this.x = x
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this.targetElement = targetElement
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if(typeof targetElement == "string") {
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this.targetElement = Objects.getObjectByName(targetElement, elementTypes)
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}
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this.labelPosition = labelPosition
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this.displayStyle = displayStyle
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this.targetValuePosition = targetValuePosition
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}
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export() {
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return [this.name, this.visible, this.color.toString(), this.labelContent,
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this.x.toEditableString(), this.targetElement == null ? null : this.targetElement.name, this.labelPosition,
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this.approximate, this.rounding, this.displayStyle, this.targetValuePosition]
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}
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getReadableString() {
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if(this.targetElement == null) return `${this.name} = ${this.x.toString()}`
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return `${this.name} = ${this.x.toString()}\n${this.getTargetValueLabel()}`
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}
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getLatexString() {
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if(this.targetElement == null) return `${Latex.variable(this.name)} = ${this.x.latexMarkup}`
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return `\\begin{array}{l}
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${Latex.variable(this.name)} = ${this.x.latexMarkup} \\\\
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${this.getTargetValueLatexLabel()}`
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}
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getTargetValueLabel() {
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var t = this.targetElement
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var approx = ''
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if(this.approximate) {
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approx = t.execute(this.x.execute())
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approx = approx.toPrecision(this.rounding + Math.round(approx).toString().length)
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}
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return `${t.name}(${this.name}) = ${t.simplify(this.x.toEditableString())}` +
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(this.approximate ? ' ≈ ' + approx : '')
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}
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getTargetValueLatexLabel() {
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var t = this.targetElement
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var approx = ''
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if(this.approximate) {
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approx = t.execute(this.x.execute())
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approx = approx.toPrecision(this.rounding + Math.round(approx).toString().length)
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}
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let simpl = t.simplify(this.x.toEditableString())
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return `${Latex.variable(t.name)}(${Latex.variable(this.name)}) = ${simpl.tokens ? Latex.expression(simpl.tokens) : simpl}` +
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(this.approximate ? ' \\simeq ' + approx : '')
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}
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getLabel() {
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switch(this.labelContent) {
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case 'name':
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return this.name
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break;
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case 'name + value':
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switch(this.targetValuePosition) {
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case 'Next to target':
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case 'Hidden':
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return `${this.name} = ${this.x.toString()}`
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break;
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case 'With label':
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return this.getReadableString()
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break;
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}
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case 'null':
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return ''
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}
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}
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getLatexLabel() {
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switch(this.labelContent) {
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case 'name':
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return Latex.variable(this.name)
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break;
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case 'name + value':
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switch(this.targetValuePosition) {
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case 'Next to target':
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case 'Hidden':
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return `${Latex.variable(this.name)} = ${this.x.latexMarkup}`
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break;
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case 'With label':
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return this.getLatexString()
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break;
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}
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case 'null':
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return ''
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}
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}
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draw(canvas, ctx) {
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let xpos = canvas.x2px(this.x.execute())
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switch(this.displayStyle) {
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case '— — — — — — —':
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var dashPxSize = 10
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for(var i = 0; i < canvas.canvasSize.height; i += dashPxSize*2)
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canvas.drawLine(ctx, xpos, i, xpos, i+dashPxSize)
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break;
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case '⸺⸺⸺⸺⸺⸺':
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canvas.drawXLine(ctx, this.x.execute())
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break;
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case '• • • • • • • • • •':
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var pointDistancePx = 10
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var pointSize = 2
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ctx.beginPath();
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for(var i = 0; i < canvas.canvasSize.height; i += pointDistancePx)
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ctx.ellipse(xpos-pointSize/2, i-pointSize/2, pointSize, pointSize)
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ctx.fill();
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break;
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}
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// Drawing label at the top of the canvas.
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this.drawLabel(canvas, ctx, this.labelPosition, xpos, 0, false, null, null,
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(x,y,ltxImg) => canvas.drawVisibleImage(ctx, ltxImg.source, x, 5, ltxImg.width, ltxImg.height),
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(x,y,text,textSize) => canvas.drawVisibleText(ctx, text, x, textSize.height+5))
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// Drawing label at the position of the target element.
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if(this.targetValuePosition == 'Next to target' && this.targetElement != null) {
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let ypos = canvas.y2px(this.targetElement.execute(this.x.execute()))
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this.drawLabel(canvas, ctx, this.labelPosition, xpos, ypos, false,
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this.getTargetValueLatexLabel.bind(this), this.getTargetValueLabel.bind(this),
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(x,y,ltxImg) => canvas.drawVisibleImage(ctx, ltxImg.source, x, y, ltxImg.width, ltxImg.height),
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(x,y,text,textSize) => canvas.drawVisibleText(ctx, text, x, y+textSize.height))
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}
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}
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}
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