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<h1 class="page-title">Source: panels/BottomPanel.js</h1>
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<pre class="prettyprint source linenums"><code>import SvgCanvas from '@svgedit/svgcanvas'
import { jGraduate } from '../components/jgraduate/jQuery.jGraduate.js'
import BottomPanelHtml from './BottomPanel.html'
const { $id } = SvgCanvas
/*
* register actions for left panel
*/
/**
* @type {module}
*/
class BottomPanel {
/**
* @param {PlainObject} editor svgedit handler
*/
constructor (editor) {
this.editor = editor
}
/**
* @type {module}
*/
get selectedElement () {
return this.editor.selectedElement
}
/**
* @type {module}
*/
get multiselected () {
return this.editor.multiselected
}
/**
* @type {module}
*/
changeStrokeWidth (e) {
let val = e.target.value
if (
val === 0 &&
this.editor.selectedElement &&
['line', 'polyline'].includes(this.editor.selectedElement.nodeName)
) {
val = 1
}
this.editor.svgCanvas.setStrokeWidth(val)
}
/**
* @type {module}
*/
changeZoom (value) {
switch (value) {
case 'canvas':
case 'selection':
case 'layer':
case 'content':
this.editor.zoomChanged(window, value)
break
default: {
const newZoom = Number(value) > 0.1 ? Number(value) * 0.01 : 0.1
const zoom = this.editor.svgCanvas.getZoom()
if (this.editor.svgCanvas.getMode() === 'pathedit') {
// In pathedit mode, use zoomImage to update path points correctly.
this.editor.zoomImage(newZoom / zoom)
} else {
const { workarea } = this.editor
// Use helper function to compute center only once.
const center = getWorkareaCenter(workarea, zoom)
this.editor.zoomChanged(
window,
{
width: 0,
height: 0,
x: center.x,
y: center.y,
zoom: newZoom
},
true
)
}
}
}
}
/**
* @fires module:svgcanvas.SvgCanvas#event:ext_toolButtonStateUpdate
* @returns {void}
*/
updateToolButtonState () {
const bNoFill = this.editor.svgCanvas.getColor('fill') === 'none'
const bNoStroke = this.editor.svgCanvas.getColor('stroke') === 'none'
const buttonsNeedingStroke = ['tool_fhpath', 'tool_line']
const buttonsNeedingFillAndStroke = [
'tools_rect',
'tools_ellipse',
'tool_text',
'tool_path'
]
if (bNoStroke) {
buttonsNeedingStroke.forEach(btn => {
// if btn is pressed, change to select button
if ($id(btn).pressed) {
this.editor.leftPanel.clickSelect()
}
$id(btn).disabled = true
})
} else {
buttonsNeedingStroke.forEach(btn => {
$id(btn).disabled = false
})
}
if (bNoStroke && bNoFill) {
buttonsNeedingFillAndStroke.forEach(btn => {
// if btn is pressed, change to select button
if ($id(btn).pressed) {
this.editor.leftPanel.clickSelect()
}
$id(btn).disabled = true
})
} else {
buttonsNeedingFillAndStroke.forEach(btn => {
$id(btn).disabled = false
})
}
this.editor.svgCanvas.runExtensions(
'toolButtonStateUpdate',
/** @type {module:svgcanvas.SvgCanvas#event:ext_toolButtonStateUpdate} */ {
nofill: bNoFill,
nostroke: bNoStroke
}
)
}
/**
* @type {module}
*/
handleColorPicker (type, evt) {
const { paint } = evt.detail
this.editor.svgCanvas.setPaint(type, paint)
this.updateToolButtonState()
}
/**
* @type {module}
*/
handleStrokeAttr (type, evt) {
this.editor.svgCanvas.setStrokeAttr(type, evt.detail.value)
}
/**
* @type {module}
*/
handleOpacity (evt) {
const val = Number.parseInt(evt.currentTarget.value.split('%')[0])
this.editor.svgCanvas.setOpacity(val / 100)
}
/**
* @type {module}
*/
handlePalette (e) {
e.preventDefault()
// shift key or right click for stroke
const { picker, color } = e.detail
// Webkit-based browsers returned 'initial' here for no stroke
const paint =
color === 'none'
? new jGraduate.Paint()
: new jGraduate.Paint({ alpha: 100, solidColor: color.substr(1) })
if (picker === 'fill') {
$id('fill_color').setPaint(paint)
} else {
$id('stroke_color').setPaint(paint)
}
this.editor.svgCanvas.setColor(picker, color)
if (
color !== 'none' &&
this.editor.svgCanvas.getPaintOpacity(picker) !== 1
) {
this.editor.svgCanvas.setPaintOpacity(picker, 1.0)
}
this.updateToolButtonState()
}
/**
* @type {module}
*/
init () {
// register actions for Bottom panel
const template = document.createElement('template')
const { i18next } = this.editor
template.innerHTML = BottomPanelHtml
this.editor.$svgEditor.append(template.content.cloneNode(true))
$id('palette').addEventListener('change', this.handlePalette.bind(this))
$id('palette').init(i18next)
const { curConfig } = this.editor.configObj
$id('fill_color').setPaint(
new jGraduate.Paint({ alpha: 100, solidColor: curConfig.initFill.color })
)
$id('stroke_color').setPaint(
new jGraduate.Paint({
alpha: 100,
solidColor: curConfig.initStroke.color
})
)
$id('zoom').addEventListener('change', e =>
this.changeZoom.bind(this)(e.detail.value)
)
$id('stroke_color').addEventListener('change', evt =>
this.handleColorPicker.bind(this)('stroke', evt)
)
$id('fill_color').addEventListener('change', evt =>
this.handleColorPicker.bind(this)('fill', evt)
)
$id('stroke_width').addEventListener(
'change',
this.changeStrokeWidth.bind(this)
)
$id('stroke_style').addEventListener('change', evt =>
this.handleStrokeAttr.bind(this)('stroke-dasharray', evt)
)
$id('stroke_linejoin').addEventListener('change', evt =>
this.handleStrokeAttr.bind(this)('stroke-linejoin', evt)
)
$id('stroke_linecap').addEventListener('change', evt =>
this.handleStrokeAttr.bind(this)('stroke-linecap', evt)
)
$id('opacity').addEventListener('change', this.handleOpacity.bind(this))
$id('fill_color').init(i18next)
$id('stroke_color').init(i18next)
}
/**
* @type {module}
*/
updateColorpickers (apply) {
$id('fill_color').update(
this.editor.svgCanvas,
this.editor.selectedElement,
apply
)
$id('stroke_color').update(
this.editor.svgCanvas,
this.editor.selectedElement,
apply
)
}
}
// Helper function to get the center of the workarea
const getWorkareaCenter = (workarea, zoom) => {
const width = parseFloat(getComputedStyle(workarea).width.replace('px', ''))
const height = parseFloat(getComputedStyle(workarea).height.replace('px', ''))
return {
x: (workarea.scrollLeft + width / 2) / zoom,
y: (workarea.scrollTop + height / 2) / zoom
}
}
export default BottomPanel
</code></pre>
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