import { mapGetters } from "vuex";
|
const version = require("element-ui/package.json").version; // element-ui version from node_modules
|
const ORIGINAL_THEME = "#409EFF"; // default color
|
export default function () {
|
return {
|
data() {
|
return {
|
themeVal: ORIGINAL_THEME
|
}
|
},
|
created() {
|
this.themeVal = this.colorName;
|
},
|
watch: {
|
themeVal(val, oldVal) {
|
this.$store.commit("SET_COLOR_NAME", val);
|
this.updateTheme(val, oldVal);
|
}
|
},
|
computed: {
|
...mapGetters(["colorName"])
|
},
|
methods: {
|
updateTheme(val, oldVal) {
|
if (typeof val !== "string") return;
|
const head = document.getElementsByTagName("head")[0];
|
const themeCluster = this.getThemeCluster(val.replace("#", ""));
|
const originalCluster = this.getThemeCluster(oldVal.replace("#", ""));
|
const getHandler = (variable, id) => {
|
return () => {
|
const originalCluster = this.getThemeCluster(
|
ORIGINAL_THEME.replace("#", "")
|
);
|
const newStyle = this.updateStyle(
|
this[variable],
|
originalCluster,
|
themeCluster
|
);
|
|
let styleTag = document.getElementById(id);
|
if (!styleTag) {
|
styleTag = document.createElement("style");
|
styleTag.setAttribute("id", id);
|
head.appendChild(styleTag);
|
}
|
styleTag.innerText = newStyle;
|
};
|
};
|
|
const chalkHandler = getHandler("chalk", "chalk-style");
|
|
if (!this.chalk) {
|
const url = `/cdn/element-ui/${version}/theme-chalk/index.css`;
|
this.getCSSString(url, chalkHandler, "chalk");
|
} else {
|
chalkHandler();
|
}
|
|
const link = [].slice.call(
|
document.getElementsByTagName("head")[0].getElementsByTagName("link")
|
);
|
for (let i = 0; i < link.length; i++) {
|
const style = link[i];
|
if (style.href.includes('css')) {
|
this.getCSSString(style.href, innerText => {
|
const originalCluster = this.getThemeCluster(
|
ORIGINAL_THEME.replace("#", "")
|
);
|
const newStyle = this.updateStyle(
|
innerText,
|
originalCluster,
|
themeCluster
|
);
|
let styleTag = document.getElementById(i);
|
if (!styleTag) {
|
styleTag = document.createElement("style");
|
styleTag.id = i;
|
styleTag.innerText = newStyle;
|
head.appendChild(styleTag);
|
}
|
});
|
}
|
}
|
|
const styles = [].slice.call(document.querySelectorAll("style"))
|
|
styles.forEach(style => {
|
const {
|
innerText
|
} = style;
|
if (typeof innerText !== "string") return;
|
style.innerText = this.updateStyle(
|
innerText,
|
originalCluster,
|
themeCluster
|
);
|
});
|
},
|
updateStyle(style, oldCluster, newCluster) {
|
let newStyle = style;
|
oldCluster.forEach((color, index) => {
|
newStyle = newStyle.replace(new RegExp(color, "ig"), newCluster[index]);
|
});
|
return newStyle;
|
},
|
|
getCSSString(url, callback, variable) {
|
const xhr = new XMLHttpRequest();
|
xhr.onreadystatechange = () => {
|
if (xhr.readyState === 4 && xhr.status === 200) {
|
if (variable) {
|
this[variable] = xhr.responseText.replace(/@font-face{[^}]+}/, "");
|
}
|
callback(xhr.responseText);
|
}
|
};
|
xhr.open("GET", url);
|
xhr.send();
|
},
|
|
getThemeCluster(theme) {
|
const tintColor = (color, tint) => {
|
let red = parseInt(color.slice(0, 2), 16);
|
let green = parseInt(color.slice(2, 4), 16);
|
let blue = parseInt(color.slice(4, 6), 16);
|
|
if (tint === 0) {
|
// when primary color is in its rgb space
|
return [red, green, blue].join(",");
|
} else {
|
red += Math.round(tint * (255 - red));
|
green += Math.round(tint * (255 - green));
|
blue += Math.round(tint * (255 - blue));
|
|
red = red.toString(16);
|
green = green.toString(16);
|
blue = blue.toString(16);
|
|
return `#${red}${green}${blue}`;
|
}
|
};
|
|
const shadeColor = (color, shade) => {
|
let red = parseInt(color.slice(0, 2), 16);
|
let green = parseInt(color.slice(2, 4), 16);
|
let blue = parseInt(color.slice(4, 6), 16);
|
|
red = Math.round((1 - shade) * red);
|
green = Math.round((1 - shade) * green);
|
blue = Math.round((1 - shade) * blue);
|
|
red = red.toString(16);
|
green = green.toString(16);
|
blue = blue.toString(16);
|
|
return `#${red}${green}${blue}`;
|
};
|
|
const clusters = [theme];
|
for (let i = 0; i <= 9; i++) {
|
clusters.push(tintColor(theme, Number((i / 10).toFixed(2))));
|
}
|
clusters.push(shadeColor(theme, 0.1));
|
return clusters;
|
}
|
}
|
}
|
}
|