[Editor] Scale the signature editor when it's too large (bug 1948741)

src/display/editor/signature.js

@@ -248,6 +248,11 @@ class SignatureEditor extends DrawingEditor {
     newHeight = newHeight >= 1 ? 0.5 : newHeight;
 
     this.width *= newHeight / this.height;
+    if (this.width >= 1) {
+      newHeight *= 0.9 / this.width;
+      this.width = 0.9;
+    }
+
     this.height = newHeight;
     this.setDims(parentWidth * this.width, parentHeight * this.height);
     this.x = savedX;

test/integration/signature_editor_spec.mjs

@@ -16,6 +16,7 @@
 import {
   closePages,
   getEditorSelector,
+  getRect,
   loadAndWait,
   switchToEditor,
   waitForTimeout,
@@ -207,4 +208,46 @@ describe("Signature Editor", () => {
       );
     });
   });
+
+  describe("Bug 1948741", () => {
+    let pages;
+
+    beforeEach(async () => {
+      pages = await loadAndWait("empty.pdf", ".annotationEditorLayer");
+    });
+
+    afterEach(async () => {
+      await closePages(pages);
+    });
+
+    it("must check that the editor isn't too large", async () => {
+      await Promise.all(
+        pages.map(async ([_, page]) => {
+          await switchToSignature(page);
+          await page.click("#editorSignatureAddSignature");
+
+          await page.waitForSelector("#addSignatureDialog", {
+            visible: true,
+          });
+          await page.type(
+            "#addSignatureTypeInput",
+            "[18:50:03] asset pdf.scripting.mjs 105 KiB [emitted] [javascript module] (name: main)"
+          );
+          await page.waitForSelector(`${addButtonSelector}:not(:disabled)`);
+          await page.click("#addSignatureAddButton");
+
+          const editorSelector = getEditorSelector(0);
+          await page.waitForSelector(editorSelector, { visible: true });
+          await page.waitForSelector(
+            `.canvasWrapper > svg use[href="#path_p1_0"]`,
+            { visible: true }
+          );
+
+          const { width } = await getRect(page, editorSelector);
+          const { width: pageWidth } = await getRect(page, ".page");
+          expect(width).toBeLessThanOrEqual(pageWidth);
+        })
+      );
+    });
+  });
 });