Add UI for setting view background

src/components/ha-picture-upload.ts

@@ -31,6 +31,8 @@ export class HaPictureUpload extends LitElement {
 
   @property({ attribute: false }) public cropOptions?: CropOptions;
 
+  @property({ type: Boolean }) public original = false;
+
   @property({ type: Number }) public size = 512;
 
   @state() private _uploading = false;
@@ -122,7 +124,11 @@ export class HaPictureUpload extends LitElement {
     this._uploading = true;
     try {
       const media = await createImage(this.hass, file);
-      this.value = generateImageThumbnailUrl(media.id, this.size);
+      this.value = generateImageThumbnailUrl(
+        media.id,
+        this.size,
+        this.original
+      );
       fireEvent(this, "change");
     } catch (err: any) {
       showAlertDialog(this, {

src/data/image_upload.ts

@@ -12,8 +12,14 @@ export interface ImageMutableParams {
   name: string;
 }
 
-export const generateImageThumbnailUrl = (mediaId: string, size: number) =>
-  `/api/image/serve/${mediaId}/${size}x${size}`;
+export const generateImageThumbnailUrl = (
+  mediaId: string,
+  size: number,
+  original: boolean
+) =>
+  original
+    ? `/api/image/serve/${mediaId}/original`
+    : `/api/image/serve/${mediaId}/${size}x${size}`;
 
 export const fetchImages = (hass: HomeAssistant) =>
   hass.callWS<Image[]>({ type: "image/list" });

src/panels/lovelace/editor/view-editor/hui-dialog-edit-view.ts

@@ -49,6 +49,7 @@ import {
   ViewVisibilityChangeEvent,
 } from "../types";
 import "./hui-view-editor";
+import "./hui-view-background-editor";
 import "./hui-view-visibility-editor";
 import { EditViewDialogParams } from "./show-edit-view-dialog";
 
@@ -155,6 +156,15 @@ export class HuiDialogEditView extends LitElement {
             ></hui-view-editor>
           `;
           break;
+        case "tab-background":
+          content = html`
+            <hui-view-background-editor
+              .hass=${this.hass}
+              .config=${this._config}
+              @view-config-changed=${this._viewConfigChanged}
+            ></hui-view-background-editor>
+          `;
+          break;
         case "tab-badges":
           content = html`
             ${this._config?.badges?.length
@@ -292,6 +302,11 @@ export class HuiDialogEditView extends LitElement {
                     "ui.panel.lovelace.editor.edit_view.tab_settings"
                   )}</paper-tab
                 >
+                <paper-tab id="tab-background"
+                  >${this.hass!.localize(
+                    "ui.panel.lovelace.editor.edit_view.tab_background"
+                  )}</paper-tab
+                >
                 <paper-tab id="tab-badges"
                   >${this.hass!.localize(
                     "ui.panel.lovelace.editor.edit_view.tab_badges"

src/panels/lovelace/editor/view-editor/hui-view-background-editor.ts

@@ -0,0 +1,81 @@
+import "@material/mwc-list/mwc-list-item";
+import { CSSResultGroup, LitElement, css, html, nothing } from "lit";
+import { customElement, property, state } from "lit/decorators";
+import { fireEvent } from "../../../../common/dom/fire_event";
+import "../../../../components/user/ha-user-badge";
+import { LovelaceViewConfig } from "../../../../data/lovelace/config/view";
+import { HomeAssistant, ValueChangedEvent } from "../../../../types";
+import "../../../../components/ha-picture-upload";
+import type { HaPictureUpload } from "../../../../components/ha-picture-upload";
+import { CropOptions } from "../../../../dialogs/image-cropper-dialog/show-image-cropper-dialog";
+
+const cropOptions: CropOptions = {
+  round: false,
+  type: "image/jpeg",
+  quality: 0.75,
+  aspectRatio: 1.78,
+};
+
+@customElement("hui-view-background-editor")
+export class HuiViewBackgroundEditor extends LitElement {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @state() private _config!: LovelaceViewConfig;
+
+  set config(config: LovelaceViewConfig) {
+    this._config = config;
+  }
+
+  protected render() {
+    if (!this.hass) {
+      return nothing;
+    }
+
+    const backgroundUrlRegex = /url\(['"]?([^'"]+)['"]?\)/;
+    const backgroundUrlMatch = backgroundUrlRegex.exec(
+      this._config?.background || ""
+    );
+    const backgroundUrl = backgroundUrlMatch ? backgroundUrlMatch[1] : null;
+
+    return html`
+      <p>
+        ${this.hass.localize(
+          "ui.panel.lovelace.editor.edit_view.background.title"
+        )}
+      </p>
+      <ha-picture-upload
+        .hass=${this.hass}
+        .value=${backgroundUrl}
+        crop
+        .cropOptions=${cropOptions}
+        original
+        @change=${this._backgroundChanged}
+      ></ha-picture-upload>
+    `;
+  }
+
+  private _backgroundChanged(ev: ValueChangedEvent<string | null>) {
+    const backgroundUrl = (ev.target as HaPictureUpload).value;
+    const config = {
+      ...this._config,
+      background: backgroundUrl
+        ? `center / cover no-repeat url('${backgroundUrl}')`
+        : undefined,
+    };
+    fireEvent(this, "view-config-changed", { config });
+  }
+
+  static get styles(): CSSResultGroup {
+    return css`
+      :host {
+        display: block;
+      }
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "hui-view-background-editor": HuiViewBackgroundEditor;
+  }
+}

src/translations/en.json

@@ -5439,11 +5439,15 @@
             "header": "View configuration",
             "header_name": "{name} View Configuration",
             "add": "Add view",
+            "background": {
+              "title": "Add a background to the view"
+            },
             "edit": "Edit view",
             "delete": "Delete view",
             "move_left": "Move view left",
             "move_right": "Move view right",
             "tab_settings": "Settings",
+            "tab_background": "Background",
             "tab_badges": "Badges",
             "tab_visibility": "Visibility",
             "visibility": {