1# Transformation 2 3Transformation attributes allow you to rotate, translate, scale, or transform a component. 4 5> **NOTE** 6> 7> The APIs of this module are supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version. 8 9## Attributes 10 11 12| Name | Type | Description | 13| --------- | ---------------------------------------- | ---------------------------------------- | 14| rotate | {<br>x?: number,<br>y?: number,<br>z?: number,<br>angle: number \| string,<br>centerX?: number \| string,<br>centerY?: number \| string<br>} | How the component rotates in the coordinate system (as shown below) with the upper left corner of the component as the coordinate origin. (x, y, z) specifies a vector as the axis of rotation.<br>- **angle**: rotation angle. A positive angle indicates a clockwise rotation, and a negative angle indicates a counterclockwise rotation. The value can be of the string type, for example, **'90deg'**.<br>- **centerX** and **centerY** are used to set the center of rotation.<br>The axis and center of rotation are set based on the coordinate system, which remains where it is when the component is moved.<br>Default value:<br>{<br>x: 0,<br>y: 0,<br>z: 0,<br>centerX: '50%',<br>centerY: '50%'<br>}<br><br>Since API version 9, this API is supported in ArkTS widgets.| 15| translate | {<br>x?: number \| string,<br>y?: number \| string,<br>z? : number \| string<br>} | How the component is translated in the coordinate system (as shown below) with the upper left corner of the component as the coordinate origin. Values of **x**, **y**, and **z** indicate the translation distance along the respective axis. A positive value indicates a forward movement towards the respective axis, and a negative value indicates a backward movement towards the respective axis. The translation distance can be a number or a string (for example, **'10px'** or **'10%'**).<br>Default value:<br>{<br>x: 0,<br>y: 0,<br>z: 0<br>}<br><br>Since API version 9, this API is supported in ArkTS widgets.| 16| scale | {<br>x?: number,<br>y?: number,<br>z?: number,<br>centerX?: number \| string,<br>centerY?: number \| string<br>} | Scale ratio along the x-, y-, and z-axis. The default value is **1**. **centerX** and **centerY** are used to set the scale center point.<br>Default value:<br>{<br>x: 1,<br>y: 1,<br>z: 1,<br>centerX:'50%',<br>centerY:'50%'<br>}<br>Since API version 9, this API is supported in ArkTS widgets.| 17| transform | [Matrix4Transit](../apis/js-apis-matrix4.md) | Transformation matrix of the component. | 18 19> **NOTE** 20> 21> If both the **rotate** and **scale** attributes are set for a component, the values of **centerX** and **centerY** conflict. In this case, the one that is set later in time prevails. 22 23## Example 24 25```ts 26// xxx.ets 27import matrix4 from '@ohos.matrix4' 28 29@Entry 30@Component 31struct TransformExample { 32 build() { 33 Column() { 34 Text('rotate').width('90%').fontColor(0xCCCCCC).padding(15).fontSize(14) 35 Row() 36 .rotate({ 37 x: 0, 38 y: 0, 39 z: 1, 40 centerX: '50%', 41 centerY: '50%', 42 angle: 300 43 }) // The component rotates around the center point of the rotation axis (0,0,1) clockwise by 300 degrees. 44 .width(100).height(100).backgroundColor(0xAFEEEE) 45 46 Text('translate').width('90%').fontColor(0xCCCCCC).padding(10).fontSize(14) 47 Row() 48 .translate({ x: 100, y: 10 }) // The component translates by 100 along the x-axis and by 10 along the y-axis. 49 .width(100).height(100).backgroundColor(0xAFEEEE).margin({ bottom: 10 }) 50 51 Text('scale').width('90%').fontColor(0xCCCCCC).padding(15).fontSize(14) 52 Row() 53 .scale({ x: 2, y: 0.5}) // The height and width are doubled. The z-axis has no effect in 2D mode. 54 .width(100).height(100).backgroundColor(0xAFEEEE) 55 56 Text('Matrix4').width('90%').fontColor(0xCCCCCC).padding(15).fontSize(14) 57 Row() 58 .width(100).height(100).backgroundColor(0xAFEEEE) 59 .transform(matrix4.identity().translate({ x: 50, y: 50 }).scale({ x: 1.5, y: 1 }).rotate({ 60 x: 0, 61 y: 0, 62 z: 1, 63 angle: 60 64 })) 65 }.width('100%').margin({ top: 5 }) 66 } 67} 68``` 69 70 71
