Added PowerPoint templates to the Slide Assistant (#1055)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>
2026-11-05 04:27:21 +00:00 · 2026-10-25 18:52:39 +01:00
1 parent 8c5cfa78b6
commit 6eb23ebbcb
@@ -0,0 +1,69 @@
+namespace AIStudio.Tools.PowerPoint;
+
+internal sealed partial class PresentationTemplate
+{
+    /// <summary>
+    /// Creates the catalog the Slide Assistant works with when no template was chosen.
+    /// </summary>
+    /// <remarks>
+    /// Without a template, the Slide Assistant writes an outline only. It still asks the model for the
+    /// same JSON, against these few layouts of a plain 16:9 presentation, so that one prompt and one
+    /// check serve both cases. Places and font sizes are those of a new presentation in PowerPoint.
+    /// </remarks>
+    /// <returns>The catalog.</returns>
+    public static PresentationTemplate CreateDefault()
+    {
+        var title = new SlotBounds(838_200, 365_125, 10_515_600, 1_325_563);
+        var body = new SlotBounds(838_200, 1_825_625, 10_515_600, 4_351_338);
+        var left = new SlotBounds(838_200, 1_825_625, 5_181_600, 4_351_338);
+        var right = new SlotBounds(6_172_200, 1_825_625, 5_181_600, 4_351_338);
+
+        TemplateLayout[] layouts =
+        [
+            DefaultLayout(1, "Title Slide", "title",
+                (PlaceholderRole.TITLE, new SlotBounds(1_524_000, 1_122_363, 9_144_000, 2_387_600), 6000),
+                (PlaceholderRole.SUBTITLE, new SlotBounds(1_524_000, 3_602_038, 9_144_000, 1_655_762), 2400)),
+
+            DefaultLayout(2, "Section Header", "secHead",
+                (PlaceholderRole.TITLE, new SlotBounds(831_850, 1_709_738, 10_515_600, 2_852_737), 6000),
+                (PlaceholderRole.SUBTITLE, new SlotBounds(831_850, 4_589_463, 10_515_600, 1_500_187), 2400)),
+
+            DefaultLayout(3, "Title and Content", "obj",
+                (PlaceholderRole.TITLE, title, 4400),
+                (PlaceholderRole.TEXT, body, 2800)),
+
+            DefaultLayout(4, "Two Content", "twoObj",
+                (PlaceholderRole.TITLE, title, 4400),
+                (PlaceholderRole.TEXT, left, 2800),
+                (PlaceholderRole.TEXT, right, 2800)),
+
+            DefaultLayout(5, "Content with Picture", "cust",
+                (PlaceholderRole.TITLE, title, 4400),
+                (PlaceholderRole.TEXT, left, 2800),
+                (PlaceholderRole.PICTURE, right, DEFAULT_FONT_SIZE)),
+
+            DefaultLayout(6, "Table", "tbl",
+                (PlaceholderRole.TITLE, title, 4400),
+                (PlaceholderRole.TABLE, body, DEFAULT_FONT_SIZE)),
+        ];
+
+        var families = layouts.Select((layout, index) => new LayoutFamily($"L{index + 1}", layout.Name, [new LayoutVariant(null, layout)])).ToList();
+        return new PresentationTemplate(DEFAULT_SLIDE_WIDTH, DEFAULT_SLIDE_HEIGHT, families, [], []);
+    }
+
+    private static TemplateLayout DefaultLayout(int number, string name, string layoutType, params (PlaceholderRole Role, SlotBounds Bounds, int FontSize)[] slots)
+    {
+        var templateSlots = slots.Select(slot => new TemplateSlot(slot.Role, 0, slot.Bounds, DefaultPlaceholderTypeOf(slot.Role), null, CapacityOf(slot.Role, slot.Bounds, slot.FontSize, InsetsOf(null))));
+        return new TemplateLayout(name, new Uri($"/ppt/slideLayouts/slideLayout{number}.xml", UriKind.Relative), layoutType, InReadingOrder(templateSlots, DEFAULT_SLIDE_HEIGHT));
+    }
+
+    private static string DefaultPlaceholderTypeOf(PlaceholderRole role) => role switch
+    {
+        PlaceholderRole.TITLE => "title",
+        PlaceholderRole.SUBTITLE => "subTitle",
+        PlaceholderRole.PICTURE => "pic",
+        PlaceholderRole.TABLE => "tbl",
+
+        _ => "body",
+    };
+}