Preserve QPowerPoint text run styles in PPTX

src/io/powerPointOffice.test.ts

@@ -592,6 +592,69 @@ describe("powerPointOffice helpers", () => {
     expect(exportedSlideXml).toContain('typeface="Times New Roman"');
   });
 
+  it("импортирует и экспортирует начертание текста слайда PPTX", async () => {
+    const zip = new JSZip();
+    zip.file(
+      "ppt/presentation.xml",
+      `<p:presentation xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><p:sldIdLst><p:sldId id="256" r:id="rId1"/></p:sldIdLst></p:presentation>`
+    );
+    zip.file(
+      "ppt/_rels/presentation.xml.rels",
+      `<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide" Target="slides/slide1.xml"/></Relationships>`
+    );
+    zip.file("ppt/slides/slide1.xml", slideXmlWithTextRunStyles("Заголовок", "Подзаголовок"));
+
+    const importedBlob = await zip.generateAsync({
+      type: "blob",
+      mimeType: "application/vnd.openxmlformats-officedocument.presentationml.presentation"
+    });
+    const imported = await importPptxFile(new File([importedBlob], "Начертание.pptx", { type: importedBlob.type }));
+
+    expect(imported.slides[0]).toMatchObject({
+      titleBold: true,
+      titleItalics: true,
+      titleUnderline: true,
+      subtitleBold: true,
+      subtitleItalics: true,
+      subtitleUnderline: true
+    });
+
+    const exportedBlob = await exportPptxBlob({
+      title: "Начертание.pptx",
+      slides: [
+        {
+          id: "slide-1",
+          title: "Заголовок",
+          subtitle: "Подзаголовок",
+          notes: "",
+          theme: "classic",
+          titleBold: false,
+          titleItalics: true,
+          titleUnderline: true,
+          subtitleBold: true,
+          subtitleItalics: true,
+          subtitleUnderline: true
+        }
+      ]
+    });
+    const exportedZip = await JSZip.loadAsync(await exportedBlob.arrayBuffer());
+    const exportedSlideXml = (await exportedZip.file("ppt/slides/slide1.xml")?.async("string")) ?? "";
+
+    expect(exportedSlideXml).toContain('i="1"');
+    expect(exportedSlideXml).toContain('u="sng"');
+    expect(exportedSlideXml).toContain('b="1"');
+
+    const reimported = await importPptxFile(new File([exportedBlob], "Начертание.pptx", { type: exportedBlob.type }));
+    expect(reimported.slides[0]).toMatchObject({
+      titleBold: false,
+      titleItalics: true,
+      titleUnderline: true,
+      subtitleBold: true,
+      subtitleItalics: true,
+      subtitleUnderline: true
+    });
+  });
+
   it("импортирует внешние ссылки текста PPTX через hlinkClick relationships", async () => {
     const zip = new JSZip();
     zip.file(
@@ -679,6 +742,10 @@ function slideXmlWithTextStyles(title: string, subtitle: string) {
   return `<p:sld xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"><p:cSld><p:spTree><p:sp><p:txBody><a:p><a:r><a:rPr sz="3400"><a:solidFill><a:srgbClr val="C2410C"/></a:solidFill><a:latin typeface="Courier New"/></a:rPr><a:t>${title}</a:t></a:r></a:p></p:txBody></p:sp><p:sp><p:txBody><a:p><a:r><a:rPr sz="2200"><a:solidFill><a:srgbClr val="0F766E"/></a:solidFill><a:latin typeface="Times New Roman"/></a:rPr><a:t>${subtitle}</a:t></a:r></a:p></p:txBody></p:sp></p:spTree></p:cSld></p:sld>`;
 }
 
+function slideXmlWithTextRunStyles(title: string, subtitle: string) {
+  return `<p:sld xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"><p:cSld><p:spTree><p:sp><p:txBody><a:p><a:r><a:rPr b="1" i="1" u="sng"/><a:t>${title}</a:t></a:r></a:p></p:txBody></p:sp><p:sp><p:txBody><a:p><a:r><a:rPr b="1" i="1" u="sng"/><a:t>${subtitle}</a:t></a:r></a:p></p:txBody></p:sp></p:spTree></p:cSld></p:sld>`;
+}
+
 function slideXmlWithTextHyperlinks(title: string, subtitle: string) {
   return `<p:sld xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><p:cSld><p:spTree><p:sp><p:txBody><a:p><a:r><a:rPr><a:hlinkClick r:id="rIdTitleLink"/></a:rPr><a:t>${title}</a:t></a:r></a:p></p:txBody></p:sp><p:sp><p:txBody><a:p><a:r><a:rPr><a:hlinkClick r:id="rIdSubtitleLink"/></a:rPr><a:t>${subtitle}</a:t></a:r></a:p></p:txBody></p:sp></p:spTree></p:cSld></p:sld>`;
 }