fix: the strickthough position is wrong when fontsize is different (#…

…1919)
dream-num · Apr 17, 2024 · 2564456 · 2564456
1 parent 039e5e2
commit 2564456
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/packages/engine-render/src/components/docs/extensions/line.ts b/packages/engine-render/src/components/docs/extensions/line.ts
@@ -65,7 +65,7 @@ export class Line extends docExtension {
 
         if (strikethrough) {
             // strikethrough position is the middle of bounding box ascent and descent.
-            let startY = strikeoutPosition - DELTA;
+            let startY = asc + bd - strikeoutPosition - DELTA;
 
             /**
              * --------- superscript strikethrough position -------
@@ -75,9 +75,9 @@ export class Line extends docExtension {
              * --------- subscript offset   -----------------------
              */
             if (baselineOffset === BaselineOffset.SUPERSCRIPT) {
-                startY = asc + bd - spo - strikeoutPosition;
+                startY -= spo;
             } else if (baselineOffset === BaselineOffset.SUBSCRIPT) {
-                startY = asc + bd + sbo - strikeoutPosition;
+                startY += sbo;
             }
 
             this._drawLine(ctx, span, strikethrough, startY, scale);

diff --git a/packages/engine-render/src/components/docs/layout/shaping-engine/font-cache.ts b/packages/engine-render/src/components/docs/layout/shaping-engine/font-cache.ts
@@ -369,7 +369,7 @@ export class FontCache {
             bd,
             aba,
             abd,
-            sp: (ba + bd) / 2,
+            sp: (fontBoundingBoxAscent + fontBoundingBoxDescent) / 2,
             sbr: 0.6,
             spr: 0.6,
             // https://en.wikipedia.org/wiki/Subscript_and_superscript Microsoft Word 2015