fix: 修复精确预览放大后右侧留白丢失

2026-07-31 23:42:04 +08:00
parent 6f62cfebd6
commit dc026835b7
4 changed files with 63 additions and 2 deletions
@@ -2,6 +2,7 @@ import { describe, expect, it } from "vitest";
 import {
  getPdfCanvasRenderScale,
  getPdfPageCssDimensions,
+  getPrecisePdfDocumentWidth,
  PDF_PAGE_CSS_SCALE
 } from "../src/pdf-page-geometry";

@@ -31,4 +32,26 @@ describe("精确 PDF 页面尺寸", () => {
    );
    expect(getPdfCanvasRenderScale(0, 800, 2)).toBe(0);
  });
+
+  it.each([
+    [50, 457],
+    [100, 854],
+    [120, 1013],
+    [400, 3235]
+  ])("在 %i%% 缩放下把双侧固定留白计入滚动宽度", (zoom, expected) => {
+    expect(
+      getPrecisePdfDocumentWidth(
+        [595.275591],
+        zoom / 100,
+        30
+      )
+    ).toBe(expected);
+  });
+
+  it("按混合纸张中最宽页面计算精确预览滚动宽度", () => {
+    expect(
+      getPrecisePdfDocumentWidth([595.275591, 792], 1.2, 30)
+    ).toBe(1328);
+    expect(getPrecisePdfDocumentWidth([], 1.2, 30)).toBe(0);
+  });
 });