C# Document.UpdatePageLayout方法代码示例

        public void UpdatePageLayout()
        {
            //ExStart
            //ExFor:StyleCollection.Item(String)
            //ExFor:SectionCollection.Item(Int32)
            //ExFor:Document.UpdatePageLayout
            //ExSummary:Shows when to request page layout of the document to be recalculated.
            Aspose.Words.Document doc = new Aspose.Words.Document(ExDir + "Rendering.doc");

            // Saving a document to PDF or to image or printing for the first time will automatically
            // layout document pages and this information will be cached inside the document.
            doc.Save(ExDir + "Rendering.UpdatePageLayout1 Out.pdf");

            // Modify the document in any way.
            doc.Styles["Normal"].Font.Size = 6;
            doc.Sections[0].PageSetup.Orientation = Aspose.Words.Orientation.Landscape;

            // In the current version of Aspose.Words, modifying the document does not automatically rebuild
            // the cached page layout. If you want to save to PDF or render a modified document again,
            // you need to manually request page layout to be updated.
            doc.UpdatePageLayout();

            doc.Save(ExDir + "Rendering.UpdatePageLayout2 Out.pdf");
            //ExEnd
        }

        public void RecieveFontSubstitutionUpdatePageLayout()
        {
            // Store the font sources currently used so we can restore them later.
            FontSourceBase[] origFontSources = FontSettings.GetFontsSources();

            // Load the document to render.
            Aspose.Words.Document doc = new Aspose.Words.Document(ExDir + "Document.doc");

            // We can choose the default font to use in the case of any missing fonts.
            FontSettings.DefaultFontName = "Arial";

            // For testing we will set Aspose.Words to look for fonts only in a folder which doesn't exist. Since Aspose.Words won't
            // find any fonts in the specified directory, then during rendering the fonts in the document will be subsuited with the default
            // font specified under FontSettings.DefaultFontName. We can pick up on this subsuition using our callback.
            FontSettings.SetFontsFolder(string.Empty, false);

            //ExStart
            //ExId:FontSubstitutionUpdatePageLayout
            //ExSummary:Demonstrates how IWarningCallback will still recieve warning notifcations even if UpdatePageLayout is called before document save.
            // When you call UpdatePageLayout the document is rendered in memory. Any warnings that occured during rendering
            // are stored until the document save and then sent to the appropriate WarningCallback.
            doc.UpdatePageLayout();

            // Create a new class implementing IWarningCallback and assign it to the PdfSaveOptions class.
            HandleDocumentWarnings callback = new HandleDocumentWarnings();
            PdfSaveOptions saveOptions = new PdfSaveOptions();
            saveOptions.WarningCallback = callback;

            // Even though the document was rendered previously, any save warnings are notified to the user during document save.
            doc.Save(ExDir + "Rendering.FontsNotificationUpdatePageLayout Out.pdf", saveOptions);
            //ExEnd

            Assert.Greater(callback.mFontWarnings.Count, 0);
            Assert.True(callback.mFontWarnings[0].WarningType == WarningType.FontSubstitution);
            Assert.True(callback.mFontWarnings[0].Description.Contains("has not been found"));

            // Restore default fonts.
            FontSettings.SetFontsSources(origFontSources);
        }