harmony 鸿蒙@ohos.arkui.drawableDescriptor (DrawableDescriptor)
@ohos.arkui.drawableDescriptor (DrawableDescriptor)
The DrawableDescriptor module provides APIs for obtaining pixelMap objects, including the foreground, background, mask, and layered icons.
NOTE
The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.
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Modules to Import
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor';
DrawableDescriptor.constructor
constructor()
Creates a DrawableDescriptor or LayeredDrawableDescriptor object. The getDrawableDescriptor or getDrawableDescriptorByName API is required for object construction.
System API: This is a system API.
System capability: SystemCapability.ArkUI.ArkUI.Full
DrawableDescriptor
Creates a DrawableDescriptor object when the passed resource ID or name belongs to a common image.
LayeredDrawableDescriptor
Creates a LayeredDrawableDescriptor object when the passed resource ID or name belongs to a JSON file that contains foreground and background resources.
The content of the drawble.json file is as follows:
{
"layered-image":
{
"background" : "$media:background",
"foreground" : "$media:foreground"
}
}
Example
// xxx.ets
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
@Entry
@Component
struct Index {
private resManager = getContext().resourceManager
build() {
Row() {
Column() {
Image((this.resManager.getDrawableDescriptor($r('app.media.icon').id) as LayeredDrawableDescriptor))
Image(((this.resManager.getDrawableDescriptor($r('app.media.icon')
.id) as LayeredDrawableDescriptor).getForeground()).getPixelMap())
}.height('50%')
}.width('50%')
}
}
DrawableDescriptor.getPixelMap
getPixelMap(): image.PixelMap;
Obtains this pixelMap object.
System capability: SystemCapability.ArkUI.ArkUI.Full
Return value
Type | Description |
---|---|
image.PixelMap | PixelMap object. |
Example
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
let resManager = getContext().resourceManager
let pixmap: DrawableDescriptor = (resManager.getDrawableDescriptor($r('app.media.icon')
.id)) as DrawableDescriptor;
let pixmapNew: object = pixmap.getPixelMap()
LayeredDrawableDescriptor.getPixelMap
getPixelMap(): image.PixelMap;
Obtains the pixelMap object where the foreground, background, and mask are blended and cropped.
System capability: SystemCapability.ArkUI.ArkUI.Full
Return value
Type | Description |
---|---|
image.PixelMap | PixelMap object. |
Example
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
let resManager = getContext().resourceManager
let pixmap: LayeredDrawableDescriptor = (resManager.getDrawableDescriptor($r('app.media.icon')
.id)) as LayeredDrawableDescriptor;
let pixmapNew: object = pixmap.getPixelMap()
LayeredDrawableDescriptor.getForeground
getForeground(): DrawableDescriptor;
Obtains the DrawableDescriptor object of the foreground.
System capability: SystemCapability.ArkUI.ArkUI.Full
Return value
Type | Description |
---|---|
DrawableDescriptor | DrawableDescriptor object. |
Example
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
let resManager = getContext().resourceManager
let drawable: LayeredDrawableDescriptor = (resManager.getDrawableDescriptor($r('app.media.icon')
.id)) as LayeredDrawableDescriptor;
let drawableNew: object =drawable.getForeground()
LayeredDrawableDescriptor.getBackground
getBackground(): DrawableDescriptor;
Obtains the DrawableDescriptor object of the background.
System capability: SystemCapability.ArkUI.ArkUI.Full
Return value
Type | Description |
---|---|
DrawableDescriptor | DrawableDescriptor object. |
Example
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
let resManager = getContext().resourceManager
let drawable: LayeredDrawableDescriptor = (resManager.getDrawableDescriptor($r('app.media.icon')
.id)) as LayeredDrawableDescriptor;
let drawableNew: object =drawable.getBackground()
LayeredDrawableDescriptor.getMask
getMask(): DrawableDescriptor;
Obtains the DrawableDescriptor object of the mask.
System capability: SystemCapability.ArkUI.ArkUI.Full
Return value
Type | Description |
---|---|
DrawableDescriptor | DrawableDescriptor object. |
Example
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
let resManager = getContext().resourceManager
let drawable: LayeredDrawableDescriptor = (resManager.getDrawableDescriptor($r('app.media.icon')
.id)) as LayeredDrawableDescriptor;
let drawableNew: object =drawable.getMask()
LayeredDrawableDescriptor.getMaskClipPath
static getMaskClipPath(): string
Obtains the built-in clipping path parameters of the system. It is a static method of LayeredDrawableDescriptor.
System capability: SystemCapability.ArkUI.ArkUI.Full
Return value
Type | Description |
---|---|
string | String of the clipping path. |
Example
import { DrawableDescriptor, LayeredDrawableDescriptor } from '@ohos.arkui.drawableDescriptor'
Image($r('app.media.icon'))
.width('200px').height('200px')
.clip(new Path({commands:LayeredDrawableDescriptor.getMaskClipPath()}))
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