问题描述
需要帮助为ButtonBox边框上色(黄线)。
this.chart
.addUIElement(UIElementBuilders.ButtonBox.setBackground(UIBackgrounds.Rectangle))
.setPosition({ x: 18,y: 99 })
.setorigin(UIOrigins.RightTop)
.setText("Download PNG Image")
.setPadding({ top: 5,right: 20,bottom: 5,left: 20 })
.setButtonOffSize(0)
.setButtonOnSize(0)
.setDraggingMode(UIDraggingModes.notDraggable)
.onMouseClick((event) => {
this.chart.savetoFile(this.chart.getTitle())
})
}
解决方法
可以通过编辑UI元素的背景笔触样式来编辑ButtonBox
的颜色。
const uiElement = chart.addUIElement(UIElementBuilders.ButtonBox.setBackground(UIBackgrounds.Rectangle))
uiElement.setBackground(bg => bg
.setStrokeStyle((lineStyle) => lineStyle
.setFillStyle(fillStyle => fillStyle
.setColor(ColorHEX('#f00'))
)
)
)
// Extract required parts from LightningChartJS.
const {
lightningChart,UIBackgrounds,UIOrigins,UIElementBuilders,UIDraggingModes,ColorHEX
} = lcjs
// Create a XY Chart.
const chart = lightningChart().ChartXY()
chart.addUIElement(UIElementBuilders.ButtonBox.setBackground(UIBackgrounds.Rectangle))
.setPosition({ x: 99,y: 99 })
.setOrigin(UIOrigins.RightTop)
.setText('Download PNG Image')
.setPadding({ top: 5,right: 20,bottom: 5,left: 20 })
.setButtonOffSize(0)
.setButtonOnSize(0)
.setDraggingMode(UIDraggingModes.notDraggable)
.setBackground(bg => bg
.setStrokeStyle((lineStyle) => lineStyle.setFillStyle(fillStyle => fillStyle.setColor(ColorHEX('#f00'))))
)
.onMouseClick((event) => {
chart.saveToFile(chartTitle + ' - Screenshot')
})
<script src="https://unpkg.com/@arction/lcjs@2.0.3/dist/lcjs.iife.js"></script>