Add floating image support and documentation

src/file/drawing/drawing.ts

@@ -5,11 +5,6 @@ import { IFloating } from "./floating";
 import { Inline } from "./inline";
 import { ITextWrapping } from "./text-wrap";
 
-export enum PlacementPosition {
-    INLINE,
-    FLOATING,
-}
-
 export interface IDistance {
     readonly distT?: number;
     readonly distB?: number;
@@ -18,35 +13,25 @@ export interface IDistance {
 }
 
 export interface IDrawingOptions {
-    readonly position?: PlacementPosition;
     readonly textWrapping?: ITextWrapping;
     readonly floating?: IFloating;
 }
 
-const defaultDrawingOptions: IDrawingOptions = {
-    position: PlacementPosition.INLINE,
-};
-
 export class Drawing extends XmlComponent {
     private readonly inline: Inline;
 
-    constructor(imageData: IMediaData, drawingOptions?: IDrawingOptions) {
+    constructor(imageData: IMediaData, drawingOptions: IDrawingOptions = {}) {
         super("w:drawing");
 
         if (imageData === undefined) {
             throw new Error("imageData cannot be undefined");
         }
 
-        const mergedOptions = {
-            ...defaultDrawingOptions,
-            ...drawingOptions,
-        };
-
-        if (mergedOptions.position === PlacementPosition.INLINE) {
+        if (!drawingOptions.floating) {
             this.inline = new Inline(imageData.referenceId, imageData.dimensions);
             this.root.push(this.inline);
-        } else if (mergedOptions.position === PlacementPosition.FLOATING) {
-            this.root.push(new Anchor(imageData.referenceId, imageData.dimensions, mergedOptions));
+        } else {
+            this.root.push(new Anchor(imageData.referenceId, imageData.dimensions, drawingOptions));
         }
     }