From 022acfa803e7f1fba6b4e306b1bc6ff0994f73da Mon Sep 17 00:00:00 2001
From: youqijing <youqijing@huawei.com>
Date: Thu, 17 Feb 2022 17:03:47 +0800
Subject: [PATCH] Add dispaly interface

Signed-off-by: youqijing <youqijing@huawei.com>
Change-Id: I88e24ca8f96ef7f12c653a332b1b001d0a29e450
---
 api/@ohos.display.d.ts | 171 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 api/@ohos.display.d.ts

diff --git a/api/@ohos.display.d.ts b/api/@ohos.display.d.ts
new file mode 100644
index 0000000000..024a10daef
--- /dev/null
+++ b/api/@ohos.display.d.ts
@@ -0,0 +1,171 @@
+/*
+* Copyright (c) 2021 Huawei Device Co., Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import { AsyncCallback, Callback } from './basic';
+
+/**
+ * interface of display manager
+ * @syscap SystemCapability.WindowManager.WindowManager.Core
+ * @since 7
+ */
+declare namespace display {
+  /**
+   * get the default display
+   * @since 7
+   */
+  function getDefaultDisplay(callback: AsyncCallback<Display>): void;
+
+  /**
+   * get the default display
+   * @since 7
+   */
+  function getDefaultDisplay(): Promise<Display>;
+
+  /**
+   * get all displays
+   * @since 7
+   */
+  function getAllDisplay(callback: AsyncCallback<Array<Display>>): void;
+
+  /**
+   * get all displays
+   * @since 7
+   */
+  function getAllDisplay(): Promise<Array<Display>>;
+
+  /**
+   * register the callback of display change
+   * @param type: type of callback
+   * @since 7
+   */
+  function on(type: 'add' | 'remove' | 'change', callback: Callback<number>): void;
+
+  /**
+   * unregister the callback of display change
+   * @param type: type of callback
+   * @since 7
+   */
+  function off(type: 'add' | 'remove' | 'change', callback?: Callback<number>): void;
+
+  /**
+   * the state of display
+   * @syscap SystemCapability.WindowManager.WindowManager.Core
+   * @since 7
+   */
+  enum DisplayState {
+    /**
+     * unknown
+     */
+    STATE_UNKNOWN = 0,
+    /**
+     * screen off
+     */
+    STATE_OFF,
+    /**
+     * screen on
+     */
+    STATE_ON,
+    /**
+     * doze, but it will update for some important system messages
+     */
+    STATE_DOZE,
+    /**
+     * doze and not update
+     */
+    STATE_DOZE_SUSPEND,
+    /**
+     * VR node
+     */
+    STATE_VR,
+    /**
+     * screen on and not update
+     */
+    STATE_ON_SUSPEND,
+  }
+
+  /**
+   * Properties of display, it couldn't update automatically
+   * @syscap SystemCapability.WindowManager.WindowManager.Core
+   * @since 7
+   */
+  interface Display {
+    /**
+     * display id
+     */
+    id: number;
+
+    /**
+     * display name
+     */
+    name: string;
+
+    /**
+     * the display is alive
+     */
+    alive: boolean;
+
+    /**
+     * the state of display
+     */
+    state: DisplayState;
+
+    /**
+     * refresh rate, unit: Hz
+     */
+    refreshRate: number;
+
+    /**
+     * the rotation degrees of the display
+     */
+    rotation: number;
+
+    /**
+     * the width of display, unit: pixel
+     */
+    width: number;
+
+    /**
+     * the height of display, unit: pixel
+     */
+    height: number;
+
+    /**
+     * indicates the display resolution.
+     */
+    densityDPI: number;
+
+    /**
+     * indicates the display density in pixels. The value of a low-resolution display is 1.0
+     */
+    densityPixels: number;
+
+    /**
+     * indicates the text scale density of a display.
+     */
+    scaledDensity: number;
+
+    /**
+     * the DPI on X-axis.
+     */
+    xDPI: number;
+
+    /**
+     * the DPI on Y-axis.
+     */
+    yDPI: number;
+  }
+}
+
+export default display;
\ No newline at end of file
-- 
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