From f111efa4fd5cb74ac2885f4c260d75efbb8b309c Mon Sep 17 00:00:00 2001 From: Stefan Sterz Date: Wed, 8 Mar 2023 17:36:57 +0100 Subject: [PATCH] gauge widget: add support for a dark theme and dynamic theme switching the gauges in the data center overview should use a dark style if the relevant css variables are set. this also makes it possible to switch the colors dynamically by adding an event listener Signed-off-by: Stefan Sterz --- src/panel/GaugeWidget.js | 45 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/src/panel/GaugeWidget.js b/src/panel/GaugeWidget.js index 0cc2079..00567a2 100644 --- a/src/panel/GaugeWidget.js +++ b/src/panel/GaugeWidget.js @@ -61,6 +61,36 @@ Ext.define('Proxmox.panel.GaugeWidget', { initialValue: 0, + checkThemeColors: function() { + let me = this; + let rootStyle = getComputedStyle(document.documentElement); + + // get colors + let panelBg = rootStyle.getPropertyValue("--pwt-panel-background").trim() || "#ffffff"; + let textColor = rootStyle.getPropertyValue("--pwt-text-color").trim() || "#000000"; + me.defaultColor = rootStyle.getPropertyValue("--pwt-gauge-default").trim() || '#c2ddf2'; + me.criticalColor = rootStyle.getPropertyValue("--pwt-gauge-crit").trim() || '#ff6c59'; + me.warningColor = rootStyle.getPropertyValue("--pwt-gauge-warn").trim() || '#fc0'; + me.backgroundColor = rootStyle.getPropertyValue("--pwt-gauge-back").trim() || '#f5f5f5'; + + // set gauge colors + let value = me.chart.series[0].getValue() / 100; + + let color = me.defaultColor; + + if (value >= me.criticalThreshold) { + color = me.criticalColor; + } else if (value >= me.warningThreshold) { + color = me.warningColor; + } + + me.chart.series[0].setColors([color, me.backgroundColor]); + + // set text and background colors + me.chart.setBackground(panelBg); + me.valueSprite.setAttributes({ fillStyle: textColor }, true); + me.chart.redraw(); + }, updateValue: function(value, text) { let me = this; @@ -100,5 +130,20 @@ Ext.define('Proxmox.panel.GaugeWidget', { me.text = me.getComponent('text'); me.chart = me.getComponent('chart'); me.valueSprite = me.chart.getSurface('chart').get('valueSprite'); + + me.checkThemeColors(); + + // switch colors on media query changes + me.mediaQueryList = window.matchMedia("(prefers-color-scheme: dark)"); + me.themeListener = (e) => { me.checkThemeColors(); }; + me.mediaQueryList.addEventListener("change", me.themeListener); + }, + + doDestroy: function() { + let me = this; + + me.mediaQueryList.removeEventListener("change", me.themeListener); + + me.callParent(); }, }); -- 2.39.2