Add precise resizing mode for card inside section

src/components/ha-grid-size-picker.ts

@@ -66,7 +66,7 @@ export class HaGridSizeEditor extends LitElement {
           .min=${columnMin}
           .max=${columnMax}
           .range=${this.columns}
-          .value=${fullWidth ? this.columns : columnValue}
+          .value=${fullWidth ? this.columns : this.value?.columns}
           @value-changed=${this._valueChanged}
           @slider-moved=${this._sliderMoved}
           .disabled=${disabledColumns}
@@ -81,7 +81,7 @@ export class HaGridSizeEditor extends LitElement {
           .max=${rowMax}
           .range=${this.rows}
           vertical
-          .value=${rowValue}
+          .value=${autoHeight ? rowMin : this.value?.rows}
           @value-changed=${this._valueChanged}
           @slider-moved=${this._sliderMoved}
           .disabled=${disabledRows}

src/data/lovelace/config/card.ts

@@ -1,11 +1,16 @@
 import type { Condition } from "../../../panels/lovelace/common/validate-condition";
-import type { LovelaceLayoutOptions } from "../../../panels/lovelace/types";
+import type {
+  LovelaceGridOptions,
+  LovelaceLayoutOptions,
+} from "../../../panels/lovelace/types";
 
 export interface LovelaceCardConfig {
   index?: number;
   view_index?: number;
   view_layout?: any;
+  /** @deprecated Use `grid_options` instead */
   layout_options?: LovelaceLayoutOptions;
+  grid_options?: LovelaceGridOptions;
   type: string;
   [key: string]: any;
   visibility?: Condition[];

src/panels/lovelace/cards/hui-card.ts

@@ -6,14 +6,15 @@ import type { MediaQueriesListener } from "../../../common/dom/media_query";
 import "../../../components/ha-svg-icon";
 import type { LovelaceCardConfig } from "../../../data/lovelace/config/card";
 import type { HomeAssistant } from "../../../types";
+import { migrateLayoutToGridOptions } from "../common/compute-card-grid-size";
 import { computeCardSize } from "../common/compute-card-size";
 import {
   attachConditionMediaQueriesListeners,
   checkConditionsMet,
 } from "../common/validate-condition";
 import { createCardElement } from "../create-element/create-card-element";
 import { createErrorCardConfig } from "../create-element/create-element-base";
-import type { LovelaceCard, LovelaceLayoutOptions } from "../types";
+import type { LovelaceCard, LovelaceGridOptions } from "../types";
 
 declare global {
   interface HASSDomEvents {
@@ -68,20 +69,44 @@ export class HuiCard extends ReactiveElement {
     return 1;
   }
 
-  public getLayoutOptions(): LovelaceLayoutOptions {
-    const configOptions = this.config?.layout_options ?? {};
-    if (this._element) {
-      const cardOptions = this._element.getLayoutOptions?.() ?? {};
-      return {
-        ...cardOptions,
-        ...configOptions,
-      };
+  public getGridOptions(): LovelaceGridOptions {
+    const elementOptions = this.getElementGridOptions();
+    const configOptions = this.getConfigGridOptions();
+    return {
+      ...elementOptions,
+      ...configOptions,
+    };
+  }
+
+  // options provided by the element
+  public getElementGridOptions(): LovelaceGridOptions {
+    if (!this._element) return {};
+
+    if (this._element.getGridOptions) {
+      return this._element.getGridOptions();
     }
-    return configOptions;
+    if (this._element.getLayoutOptions) {
+      // eslint-disable-next-line no-console
+      console.warn(
+        `This card (${this.config?.type}) is using "getLayoutOptions" and it is deprecated, contact the developer to suggest to use "getGridOptions" instead`
+      );
+      const options = migrateLayoutToGridOptions(
+        this._element.getLayoutOptions()
+      );
+      return options;
+    }
+    return {};
   }
 
-  public getElementLayoutOptions(): LovelaceLayoutOptions {
-    return this._element?.getLayoutOptions?.() ?? {};
+  // options provided by the config
+  public getConfigGridOptions(): LovelaceGridOptions {
+    if (this.config?.grid_options) {
+      return this.config.grid_options;
+    }
+    if (this.config?.layout_options) {
+      return migrateLayoutToGridOptions(this.config.layout_options);
+    }
+    return {};
   }
 
   private _updateElement(config: LovelaceCardConfig) {

src/panels/lovelace/common/compute-card-grid-size.ts

@@ -1,8 +1,39 @@
 import { conditionalClamp } from "../../../common/number/clamp";
-import type { LovelaceLayoutOptions } from "../types";
+import type { LovelaceGridOptions, LovelaceLayoutOptions } from "../types";
+
+export const GRID_COLUMN_MULTIPLIER = 3;
+
+export const multiplyBy = <T extends number | string | undefined>(
+  value: T,
+  multiplier: number
+): T => (typeof value === "number" ? ((value * multiplier) as T) : value);
+
+export const divideBy = <T extends number | string | undefined>(
+  value: T,
+  divider: number
+): T => (typeof value === "number" ? (Math.ceil(value / divider) as T) : value);
+
+export const migrateLayoutToGridOptions = (
+  options: LovelaceLayoutOptions
+): LovelaceGridOptions => {
+  const gridOptions: LovelaceGridOptions = {
+    columns: multiplyBy(options.grid_columns, GRID_COLUMN_MULTIPLIER),
+    max_columns: multiplyBy(options.grid_max_columns, GRID_COLUMN_MULTIPLIER),
+    min_columns: multiplyBy(options.grid_min_columns, GRID_COLUMN_MULTIPLIER),
+    rows: options.grid_rows,
+    max_rows: options.grid_max_rows,
+    min_rows: options.grid_min_rows,
+  };
+  for (const [key, value] of Object.entries(gridOptions)) {
+    if (value === undefined) {
+      delete gridOptions[key];
+    }
+  }
+  return gridOptions;
+};
 
 export const DEFAULT_GRID_SIZE = {
-  columns: 4,
+  columns: 12,
   rows: "auto",
 } as CardGridSize;
 
@@ -12,14 +43,14 @@ export type CardGridSize = {
 };
 
 export const computeCardGridSize = (
-  options: LovelaceLayoutOptions
+  options: LovelaceGridOptions
 ): CardGridSize => {
-  const rows = options.grid_rows ?? DEFAULT_GRID_SIZE.rows;
-  const columns = options.grid_columns ?? DEFAULT_GRID_SIZE.columns;
-  const minRows = options.grid_min_rows;
-  const maxRows = options.grid_max_rows;
-  const minColumns = options.grid_min_columns;
-  const maxColumns = options.grid_max_columns;
+  const rows = options.rows ?? DEFAULT_GRID_SIZE.rows;
+  const columns = options.columns ?? DEFAULT_GRID_SIZE.columns;
+  const minRows = options.min_rows;
+  const maxRows = options.max_rows;
+  const minColumns = options.min_columns;
+  const maxColumns = options.max_columns;
 
   const clampedRows =
     typeof rows === "string" ? rows : conditionalClamp(rows, minRows, maxRows);