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Merge pull request #29792 from ClickHouse/ui-show-bars

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Web UI: render bars in table cells
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Maksim Kita 2021-10-06 13:49:40 +03:00 committed by GitHub
commit a9e357aaff
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1 changed files with 26 additions and 5 deletions
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31
programs/server/play.html
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@ -33,6 +33,7 @@
:root {
--background-color: #DDF8FF; /* Or #FFFBEF; actually many pastel colors look great for light theme. */
--element-background-color: #FFF;
--bar-color: #F8F4F0; /* Light bar in background of table cells. */
--border-color: #EEE;
--shadow-color: rgba(0, 0, 0, 0.1);
--button-color: #FFAA00; /* Orange on light-cyan is especially good. */
@ -52,6 +53,7 @@
[data-theme="dark"] {
--background-color: #000;
--element-background-color: #102030;
--bar-color: #182838;
--border-color: #111;
--shadow-color: rgba(255, 255, 255, 0.1);
--text-color: #CCC;
@ -568,17 +570,20 @@
let thead = document.createElement('thead');
for (let idx in response.meta) {
let th = document.createElement('th');
let name = document.createTextNode(response.meta[idx].name);
const name = document.createTextNode(response.meta[idx].name);
th.appendChild(name);
thead.appendChild(th);
}
/// To prevent hanging the browser, limit the number of cells in a table.
/// It's important to have the limit on number of cells, not just rows, because tables may be wide or narrow.
let max_rows = 10000 / response.meta.length;
const max_rows = 10000 / response.meta.length;
let row_num = 0;
let column_classes = response.meta.map(elem => elem.type.match(/^(U?Int|Decimal|Float)/) ? 'right' : 'left');
const column_is_number = response.meta.map(elem => !!elem.type.match(/^(U?Int|Decimal|Float)/));
const column_maximums = column_is_number.map((elem, idx) => elem ? Math.max(...response.data.map(row => row[idx])) : 0);
const column_minimums = column_is_number.map((elem, idx) => elem ? Math.min(...response.data.map(row => Math.max(0, row[idx]))) : 0);
const column_need_render_bars = column_is_number.map((elem, idx) => column_maximums[idx] > 0 && column_maximums[idx] > column_minimums[idx]);
let tbody = document.createElement('tbody');
for (let row_idx in response.data) {
@ -614,11 +619,27 @@
node = link;
}
td.appendChild(node);
td.className = column_classes[col_idx];
td.className = column_is_number[col_idx] ? 'right' : 'left';
if (is_null) {
td.className += ' null';
}
/// If it's a number, render bar in background.
if (column_need_render_bars[col_idx] && text > 0) {
const ratio = 100 * text / column_maximums[col_idx];
let div = document.createElement('div');
div.style.width = '100%';
div.style.background = `linear-gradient(to right,
var(--bar-color) 0%, var(--bar-color) ${ratio}%,
transparent ${ratio}%, transparent 100%)`;
div.appendChild(node);
node = div;
}
td.appendChild(node);
tr.appendChild(td);
}
tbody.appendChild(tr);