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feat: add line height attribute to text element (#6360)

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* feat: add line height attribute to text element

* lint

* update line height when redrawing text bounding box

* fix tests

* retain line height when pasting styles

* fix test

* create a util for calculating ling height using old algo

* update line height when resizing multiple text elements

* make line height backward compatible

* udpate line height for older element when font size updated

* remove logs

* Add specs

* lint

* review fixes

* simplify by changing `lineHeight` from px to unitless

* make param non-optional

* update comment

* fix: jumping text due to font size being calculated incorrectly

* update line height when font family is updated

* lint

* Add spec

* more specs

* rename to getDefaultLineHeight

* fix getting lineHeight for potentially undefined fontFamily

* reduce duplication

* fix fallback

* refactor and comment tweaks

* fix

---------

Co-authored-by: dwelle <luzar.david@gmail.com>
This commit is contained in:
Aakansha Doshi 2023-03-22 11:32:38 +05:30 • committed by GitHub
parent ac4c8b3ca7
commit 83383977f5
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18 changed files with 326 additions and 143 deletions
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22
src/data/restore.ts
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@ -35,6 +35,7 @@ import { getUpdatedTimestamp, updateActiveTool } from "../utils";
import { arrayToMap } from "../utils";
import oc from "open-color";
import { MarkOptional, Mutable } from "../utility-types";
import { detectLineHeight, getDefaultLineHeight } from "../element/textElement";
type RestoredAppState = Omit<
AppState,
@ -165,17 +166,32 @@ const restoreElement = (
const [fontPx, _fontFamily]: [string, string] = (
element as any
).font.split(" ");
fontSize = parseInt(fontPx, 10);
fontSize = parseFloat(fontPx);
fontFamily = getFontFamilyByName(_fontFamily);
}
const text = element.text ?? "";
element = restoreElementWithProperties(element, {
fontSize,
fontFamily,
text: element.text ?? "",
text,
textAlign: element.textAlign || DEFAULT_TEXT_ALIGN,
verticalAlign: element.verticalAlign || DEFAULT_VERTICAL_ALIGN,
containerId: element.containerId ?? null,
originalText: element.originalText || element.text,
originalText: element.originalText || text,
// line-height might not be specified either when creating elements
// programmatically, or when importing old diagrams.
// For the latter we want to detect the original line height which
// will likely differ from our per-font fixed line height we now use,
// to maintain backward compatibility.
lineHeight:
element.lineHeight ||
(element.height
? // detect line-height from current element height and font-size
detectLineHeight(element)
: // no element height likely means programmatic use, so default
// to a fixed line height
getDefaultLineHeight(element.fontFamily)),
});
if (refreshDimensions) {