svgedit
Version:
Powerful SVG-Editor for your browser
276 lines (228 loc) • 14.3 kB
HTML
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Source: Rulers.js</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>
<body>
<div id="main">
<h1 class="page-title">Source: Rulers.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>import rulersTemplate from './templates/rulersTemplate.html'
import SvgCanvas from '@svgedit/svgcanvas'
const { $id, getTypeMap } = SvgCanvas
/**
*
*/
class Rulers {
/**
* @type {Module}
*/
constructor (editor) {
// Make [1,2,5] array
this.rulerIntervals = []
for (let i = 0.1; i < 1e5; i *= 10) {
this.rulerIntervals.push(i)
this.rulerIntervals.push(2 * i)
this.rulerIntervals.push(5 * i)
}
this.svgCanvas = editor.svgCanvas
this.editor = editor
// add rulers component to the DOM
const template = document.createElement('template')
template.innerHTML = rulersTemplate
this.editor.$svgEditor.append(template.content.cloneNode(true))
const { $id } = SvgCanvas
this.rulerX = $id('ruler_x')
this.rulerY = $id('ruler_y')
this.rulerCorner = $id('ruler_corner')
}
display (on) {
if (on) {
this.rulerX.style.removeProperty('display')
this.rulerY.style.removeProperty('display')
this.rulerCorner.style.removeProperty('display')
} else {
this.rulerX.style.display = 'none'
this.rulerY.style.display = 'none'
this.rulerCorner.style.display = 'none'
}
}
/**
* @type {Module}
*/
manageScroll () {
if (this.rulerX) this.rulerX.scrollLeft = this.editor.workarea.scrollLeft
if (this.rulerY) this.rulerY.scrollTop = this.editor.workarea.scrollTop
}
/**
*
* @param {HTMLDivElement} [scanvas]
* @param {Float} [zoom]
* @returns {void}
*/
updateRulers (scanvas, zoom) {
if (!zoom) { zoom = this.svgCanvas.getZoom() }
if (!scanvas) { scanvas = document.getElementById('svgcanvas') }
let d; let i
const limit = 30000
const contentElem = this.svgCanvas.getSvgContent()
const units = getTypeMap()
const unit = units[this.editor.configObj.curConfig.baseUnit] // 1 = 1px
// draw x ruler then y ruler
for (d = 0; d < 2; d++) {
const isX = (d === 0)
const dim = isX ? 'x' : 'y'
const lentype = isX ? 'width' : 'height'
const contentDim = Number(contentElem.getAttribute(dim))
const $hcanvOrig = $id('ruler_' + dim).querySelector('canvas')
// Bit of a hack to fully clear the canvas in Safari & IE9
const $hcanv = $hcanvOrig.cloneNode(true)
$hcanvOrig.replaceWith($hcanv)
const hcanv = $hcanv
// Set the canvas size to the width of the container
let rulerLen
if (lentype === 'width') {
rulerLen = parseFloat(getComputedStyle(scanvas, null).width.replace('px', ''))
} else if (lentype === 'height') {
rulerLen = parseFloat(getComputedStyle(scanvas, null).height.replace('px', ''))
}
const totalLen = rulerLen
hcanv.parentNode.style[lentype] = totalLen + 'px'
let ctx = hcanv.getContext('2d')
let ctxArr; let num; let ctxArrNum
ctx.fillStyle = 'rgb(200,0,0)'
ctx.fillRect(0, 0, hcanv.width, hcanv.height)
// Remove any existing canvasses
const elements = Array.prototype.filter.call($hcanv.parentNode.children, function (child) {
return child !== $hcanv
})
Array.from(elements).forEach(function (element) {
element.remove()
})
// Create multiple canvases when necessary (due to browser limits)
if (rulerLen >= limit) {
ctxArrNum = Number.parseInt(rulerLen / limit) + 1
ctxArr = []
ctxArr[0] = ctx
let copy
for (i = 1; i < ctxArrNum; i++) {
hcanv[lentype] = limit
copy = hcanv.cloneNode(true)
hcanv.parentNode.append(copy)
ctxArr[i] = copy.getContext('2d')
}
copy[lentype] = rulerLen % limit
// set copy width to last
rulerLen = limit
}
hcanv[lentype] = rulerLen
const uMulti = unit * zoom
// Calculate the main number interval
const rawM = 50 / uMulti
let multi = 1
for (i = 0; i < this.rulerIntervals.length; i++) {
num = this.rulerIntervals[i]
multi = num
if (rawM <= num) {
break
}
}
const bigInt = multi * uMulti
ctx.font = '9px sans-serif'
let rulerD = ((contentDim / uMulti) % multi) * uMulti
let labelPos = rulerD - bigInt
// draw big intervals
let ctxNum = 0
while (rulerD < totalLen) {
labelPos += bigInt
// const realD = rulerD - contentDim; // Currently unused
const curD = Math.round(rulerD) + 0.5
if (isX) {
ctx.moveTo(curD, 15)
ctx.lineTo(curD, 0)
} else {
ctx.moveTo(15, curD)
ctx.lineTo(0, curD)
}
num = (labelPos - contentDim) / uMulti
let label
if (multi >= 1) {
label = Math.round(num)
} else {
const decs = String(multi).split('.')[1].length
label = num.toFixed(decs)
}
// Change 1000s to Ks
if (label !== 0 && label !== 1000 && label % 1000 === 0) {
label = (label / 1000) + 'K'
}
if (isX) {
ctx.fillText(label, rulerD + 2, 8)
} else {
// draw label vertically
const str = String(label).split('')
for (i = 0; i < str.length; i++) {
ctx.fillText(str[i], 1, (rulerD + 9) + i * 9)
}
}
const part = bigInt / 10
// draw the small intervals
for (i = 1; i < 10; i++) {
let subD = Math.round(rulerD + part * i) + 0.5
if (ctxArr && subD > rulerLen) {
ctxNum++
ctx.stroke()
if (ctxNum >= ctxArrNum) {
i = 10
rulerD = totalLen
continue
}
ctx = ctxArr[ctxNum]
rulerD -= limit
subD = Math.round(rulerD + part * i) + 0.5
}
// odd lines are slighly longer
const lineNum = (i % 2) ? 12 : 10
if (isX) {
ctx.moveTo(subD, 15)
ctx.lineTo(subD, lineNum)
} else {
ctx.moveTo(15, subD)
ctx.lineTo(lineNum, subD)
}
}
rulerD += bigInt
}
ctx.strokeStyle = '#000'
ctx.stroke()
}
}
}
export default Rulers
</code></pre>
</article>
</section>
</div>
<nav>
<h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-SVGEditor.html">SVGEditor</a></li><li><a href="module-contextmenu.html">contextmenu</a></li><li><a href="module-jGraduate.html">jGraduate</a></li><li><a href="module-jPicker.html">jPicker</a></li><li><a href="module-locale.html">locale</a></li></ul><h3>Externals</h3><ul><li><a href="external-JamilihArray.html">JamilihArray</a></li><li><a href="external-Math.html">Math</a></li><li><a href="external-Window.html">Window</a></li><li><a href="external-jQuery.html">jQuery</a></li></ul><h3>Namespaces</h3><ul><li><a href="external-jQuery.fn.html">fn</a></li><li><a href="external-jQuery.fn.$.fn.jPicker.defaults.html">defaults</a></li><li><a href="external-jQuery.fn.exports.jPickerMethod.html">exports.jPickerMethod</a></li><li><a href="external-jQuery.fn.jGraduateDefaults.html">jGraduateDefaults</a></li><li><a href="external-jQuery.fn.jGraduateDefaults.images.html">images</a></li><li><a href="external-jQuery.fn.jGraduateDefaults.window.html">window</a></li><li><a href="external-jQuery.jGraduate.html">jGraduate</a></li><li><a href="external-jQuery.jPicker.html">jPicker</a></li><li><a href="external-jQuery.jPicker.ColorMethods.html">ColorMethods</a></li></ul><h3>Classes</h3><ul><li><a href="BottomPanel.html">BottomPanel</a></li><li><a href="Dropdown.html">Dropdown</a></li><li><a href="EditorStartup.html">EditorStartup</a></li><li><a href="ElixMenuButton.html">ElixMenuButton</a></li><li><a href="ElixNumberSpinBox.html">ElixNumberSpinBox</a></li><li><a href="ExplorerButton.html">ExplorerButton</a></li><li><a href="FlyingButton.html">FlyingButton</a></li><li><a href="LayersPanel.html">LayersPanel</a></li><li><a href="LeftPanel.html">LeftPanel</a></li><li><a href="MainMenu.html">MainMenu</a></li><li><a href="NumberSpinBox.html">NumberSpinBox</a></li><li><a href="PaintBox.html">PaintBox</a></li><li><a href="PlainNumberSpinBox.html">PlainNumberSpinBox</a></li><li><a href="Rulers.html">Rulers</a></li><li><a href="SEInput.html">SEInput</a></li><li><a href="SEPalette.html">SEPalette</a></li><li><a href="SESpinInput.html">SESpinInput</a></li><li><a href="SeCMenuDialog.html">SeCMenuDialog</a></li><li><a href="SeCMenuLayerDialog.html">SeCMenuLayerDialog</a></li><li><a href="SeColorPicker.html">SeColorPicker</a></li><li><a href="SeEditPrefsDialog.html">SeEditPrefsDialog</a></li><li><a href="SeExportDialog.html">SeExportDialog</a></li><li><a href="SeImgPropDialog.html">SeImgPropDialog</a></li><li><a href="SeList.html">SeList</a></li><li><a href="SeMenu.html">SeMenu</a></li><li><a href="SeMenuItem.html">SeMenuItem</a></li><li><a href="SePlainAlertDialog.html">SePlainAlertDialog</a></li><li><a href="SePlainBorderButton.html">SePlainBorderButton</a></li><li><a href="SePromptDialog.html">SePromptDialog</a></li><li><a href="SeStorageDialog.html">SeStorageDialog</a></li><li><a href="SeSvgSourceEditorDialog.html">SeSvgSourceEditorDialog</a></li><li><a href="SeText.html">SeText</a></li><li><a href="ToolButton.html">ToolButton</a></li><li><a href="TopPanel.html">TopPanel</a></li><li><a href="configObj.html">configObj</a></li><li><a href="external-jQuery.jGraduate.Paint.html">Paint</a></li><li><a href="external-jQuery.jPicker.Color.html">Color</a></li><li><a href="module.exports.html">exports</a></li><li><a href="module.exports_module.exports.html">exports</a></li><li><a href="module-SVGEditor-Editor.html">Editor</a></li><li><a href="module-jPicker.module.exports.html">module.exports</a></li></ul><h3>Interfaces</h3><ul><li><a href="module-SVGEditor.Config.html">Config</a></li><li><a href="module-SVGEditor.Prefs.html">Prefs</a></li><li><a href="module-SVGthis.CustomHandler.html">CustomHandler</a></li><li><a href="module-locale.LocaleEditorInit.html">LocaleEditorInit</a></li></ul><h3>Events</h3><ul><li><a href="module-SVGEditor.html#event:event:svgEditorReadyEvent">svgEditorReadyEvent</a></li></ul><h3>Tutorials</h3><ul><li><a href="tutorial-CanvasAPI.html">CanvasAPI</a></li><li><a href="tutorial-Editor.html">Editor</a></li><li><a href="tutorial-EditorAPI.html">EditorAPI</a></li><li><a href="tutorial-Events.html">Events</a></li><li><a href="tutorial-FrequentlyAskedQuestions.html">Frequently Asked Questions (FAQ)</a></li></ul><h3>Global</h3><ul><li><a href="global.html#attributeChangedCallback">attributeChangedCallback</a></li><li><a href="global.html#connectedCallback">connectedCallback</a></li><li><a href="global.html#constructor">constructor</a></li><li><a href="global.html#createTemplate">createTemplate</a></li><li><a href="global.html#decrement">decrement</a></li><li><a href="global.html#expireCookie">expireCookie</a></li><li><a href="global.html#formatValueFormatthenumericvalueasastring.Thisisusedafterincrementing/decrementingthevaluetoreformatthevalueasastring.">formatValue
Format the numeric value as a string.
This is used after incrementing/decrementing the value to reformat the
value as a string.</a></li><li><a href="global.html#get">get</a></li><li><a href="global.html#handleClick">handleClick</a></li><li><a href="global.html#handleClose">handleClose</a></li><li><a href="global.html#handleInput">handleInput</a></li><li><a href="global.html#handleKeyDown">handleKeyDown</a></li><li><a href="global.html#handleMouseDown">handleMouseDown</a></li><li><a href="global.html#handleMouseUp">handleMouseUp</a></li><li><a href="global.html#handleOptionsChange">handleOptionsChange</a></li><li><a href="global.html#handleSelect">handleSelect</a></li><li><a href="global.html#handleShow">handleShow</a></li><li><a href="global.html#increment">increment</a></li><li><a href="global.html#init">init</a></li><li><a href="global.html#inputsize">inputsize</a></li><li><a href="global.html#isNullish">isNullish</a></li><li><a href="global.html#loadloadConfig">load load Config</a></li><li><a href="global.html#loadFromURLLoadconfig/datafromURLifgiven">loadFromURL Load config/data from URL if given</a></li><li><a href="global.html#name">name</a></li><li><a href="global.html#observedAttributes">observedAttributes</a></li><li><a href="global.html#parseValue">parseValue</a></li><li><a href="global.html#pref">pref</a></li><li><a href="global.html#readySignal">readySignal</a></li><li><a href="global.html#regexEscape">regexEscape</a></li><li><a href="global.html#removeStoragePrefCookie">removeStoragePrefCookie</a></li><li><a href="global.html#replaceStoragePrompt">replaceStoragePrompt</a></li><li><a href="global.html#set">set</a></li><li><a href="global.html#setupCurConfig">setupCurConfig</a></li><li><a href="global.html#setupCurPrefs">setupCurPrefs</a></li><li><a href="global.html#src">src</a></li><li><a href="global.html#stateEffects">stateEffects</a></li><li><a href="global.html#stepDown">stepDown</a></li><li><a href="global.html#stepUp">stepUp</a></li><li><a href="global.html#triggerInputChanged">triggerInputChanged</a></li><li><a href="global.html#updateLib">updateLib</a></li><li><a href="global.html#value">value</a></li></ul>
</nav>
<br class="clear">
<footer>
Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 4.0.4</a> on Mon Jun 09 2025 17:03:26 GMT+0200 (Central European Summer Time)
</footer>
<script> prettyPrint(); </script>
<script src="scripts/linenumber.js"> </script>
</body>
</html>