harmony 鸿蒙@ohos.graphics.sendableColorSpaceManager (Sendable Color Space Management)
@ohos.graphics.sendableColorSpaceManager (Sendable Color Space Management)
The sendableColorSpaceManager module provides APIs for creating and managing sendable color space objects and obtaining basic attributes of sendable color spaces.
NOTE
The initial APIs of this module are supported since API version 12. Newly added APIs will be marked with a superscript to indicate their earliest API version.
Modules to Import
import { sendableColorSpaceManager } from '@kit.ArkGraphics2D';
ISendable
type ISendable = lang.ISendable
ISendable is the parent type of all sendable types except null and undefined. It does not have any necessary methods or properties.
System capability: SystemCapability.Utils.Lang
| Type | Description |
|---|---|
| lang.ISendable | Parent type of all sendable types. |
sendableColorSpaceManager.create
create(colorSpaceName: colorSpaceManager.ColorSpace): ColorSpaceManager
Creates a standard color space object that is sendable.
System capability: SystemCapability.Graphic.Graphic2D.ColorManager.Core
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| colorSpaceName | colorSpaceManager.ColorSpace | Yes | Type of the color space. UNKNOWN and CUSTOM cannot be used when creating standard color space objects. |
Return value
| Type | Description |
|---|---|
| ColorSpaceManager | Sendable color space object created. This instance inherits from ISendable and can be passed by reference between concurrent ArkTS instances (including the main thread and the worker threads of TaskPool or Worker). For details, see Using Sendable Objects. |
Error codes
For details about the error codes, see Universal Error Codes and colorSpaceManager Error Codes.
| ID | Error Message |
|---|---|
| 401 | Parameter error. Possible cause: 1.Incorrect parameter type. 2.Parameter verification failed. |
| 18600001 | The parameter value is abnormal. |
Example
import { colorSpaceManager } from '@kit.ArkGraphics2D';
let colorSpace: sendableColorSpaceManager.ColorSpaceManager;
colorSpace = sendableColorSpaceManager.create(colorSpaceManager.ColorSpace.SRGB);
sendableColorSpaceManager.create
create(primaries: colorSpaceManager.ColorSpacePrimaries, gamma: number): ColorSpaceManager
Creates a custom color space object that is sendable.
System capability: SystemCapability.Graphic.Graphic2D.ColorManager.Core
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| primaries | colorSpaceManager.ColorSpacePrimaries | Yes | Primaries of the color space. |
| gamma | number | Yes | Gamma of the color space. |
Return value
| Type | Description |
|---|---|
| ColorSpaceManager | Sendable color space object created. The color space type is CUSTOM, which is one of the enumerated values of colorSpaceManager.ColorSpace. This instance inherits from ISendable and can be passed by reference between concurrent ArkTS instances (including the main thread and the worker threads of TaskPool or Worker). For details, see Using Sendable Objects. |
Error codes
For details about the error codes, see Universal Error Codes and colorSpaceManager Error Codes.
| ID | Error Message |
|---|---|
| 401 | Parameter error. Possible cause: 1.Incorrect parameter type. 2.Parameter verification failed. |
| 18600001 | The parameter value is abnormal. |
Example
import { colorSpaceManager } from '@kit.ArkGraphics2D';
let colorSpace: sendableColorSpaceManager.ColorSpaceManager;
let primaries: colorSpaceManager.ColorSpacePrimaries = {
redX: 0.1,
redY: 0.1,
greenX: 0.2,
greenY: 0.2,
blueX: 0.3,
blueY: 0.3,
whitePointX: 0.4,
whitePointY: 0.4
};
let gamma: number = 2.2;
colorSpace = sendableColorSpaceManager.create(primaries, gamma);
ColorSpaceManager
Implements management of color space objects.
Before calling any of the following APIs, you must use create() to create a color space manager.
getColorSpaceName
getColorSpaceName(): colorSpaceManager.ColorSpace
Obtains the color space type.
System capability: SystemCapability.Graphic.Graphic2D.ColorManager.Core
Return value
| Type | Description |
|---|---|
| colorSpaceManager.ColorSpace | Color space type. |
Error codes
For details about the error codes, see colorSpaceManager Error Codes.
| ID | Error Message |
|---|---|
| 18600001 | The parameter value is abnormal. |
Example
let spaceName: colorSpaceManager.ColorSpace = colorSpace.getColorSpaceName();
getWhitePoint
getWhitePoint(): collections.Array<number>
Obtains the coordinates of the white point in the color space.
System capability: SystemCapability.Graphic.Graphic2D.ColorManager.Core
Return value
| Type | Description |
|---|---|
| collections.Array<number> | Coordinates [x, y] of the white point. |
Error codes
For details about the error codes, see colorSpaceManager Error Codes.
| ID | Error Message |
|---|---|
| 18600001 | The parameter value is abnormal. |
Example
import { collections } from '@kit.ArkTS';
let point: collections.Array<number> = colorSpace.getWhitePoint();
getGamma
getGamma(): number
Obtains the gamma of the color space.
System capability: SystemCapability.Graphic.Graphic2D.ColorManager.Core
Return value
| Type | Description |
|---|---|
| number | Gamma of the color space. |
Error codes
For details about the error codes, see colorSpaceManager Error Codes.
| ID | Error Message |
|---|---|
| 18600001 | The parameter value is abnormal. |
Example
let gamma: number = colorSpace.getGamma();
你可能感兴趣的鸿蒙文章
harmony 鸿蒙DisplaySoloist_ExpectedRateRange
harmony 鸿蒙NativeColorSpaceManager
- 所属分类： 后端技术
- 本文标签：
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦