mirror of https://github.com/rancher/ui.git
40 lines
1.5 KiB
JavaScript
40 lines
1.5 KiB
JavaScript
export function proposeGeometry(term) {
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if (!term.element.parentElement) {
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return null;
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}
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var parentElementStyle = window.getComputedStyle(term.element.parentElement),
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parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height')),
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parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')) - 17),
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elementStyle = window.getComputedStyle(term.element),
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elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom')),
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elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left')),
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availableHeight = parentElementHeight - elementPaddingVer,
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availableWidth = parentElementWidth - elementPaddingHor,
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subjectRow = term.rowContainer.firstElementChild,
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contentBuffer = subjectRow.innerHTML,
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characterHeight,
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rows,
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characterWidth,
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cols,
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geometry;
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subjectRow.style.display = 'inline';
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subjectRow.innerHTML = 'W'; // Common character for measuring width, although on monospace
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characterWidth = subjectRow.getBoundingClientRect().width;
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subjectRow.style.display = ''; // Revert style before calculating height, since they differ.
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characterHeight = parseInt(subjectRow.offsetHeight);
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subjectRow.innerHTML = contentBuffer;
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rows = Math.floor(availableHeight / characterHeight);
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cols = Math.floor(availableWidth / characterWidth);
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geometry = {
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cols,
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rows
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};
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return geometry;
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}
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export default { proposeGeometry }
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