To make your ArkTS widget more engaging, you can apply animations to it, including [explicit animation](../reference/arkui-ts/ts-explicit-animation.md), [attribute animation](../reference/arkui-ts/ts-animatorproperty.md), and [component transition](../reference/arkui-ts/ts-transition-animation-component.md). Just note the following restrictions when using the animations in ArkTS widgets.
To make your ArkTS widget more engaging, you can apply animations to it, including [explicit animation](../reference/arkui-ts/ts-explicit-animation.md), [property animation](../reference/arkui-ts/ts-animatorproperty.md), and [component transition](../reference/arkui-ts/ts-transition-animation-component.md). Just note the following restrictions when using the animations in ArkTS widgets.
@@ -35,7 +35,7 @@ As a quick entry to applications, ArkTS widgets outperform JS widgets in the fol
- More widget features
- Animation: ArkTS widgets support the [attribute animation](../reference/arkui-ts/ts-animatorproperty.md) and [explicit animation](../reference/arkui-ts/ts-explicit-animation.md) capabilities, which can be leveraged to deliver a more engaging experience.
- Animation: ArkTS widgets support the [property animation](../reference/arkui-ts/ts-animatorproperty.md) and [explicit animation](../reference/arkui-ts/ts-explicit-animation.md) capabilities, which can be leveraged to deliver a more engaging experience.
- Custom drawing: ArkTS widgets allow you to draw graphics with the [\<Canvas>](../reference/arkui-ts/ts-components-canvas-canvas.md) component to present information more vividly.
- Logic code execution: The capability to run logic code in widgets means that service logic can be self-closed in widgets, expanding the use cases of widgets.
You can create a property animator to animate certain universal attributes of a component, including **width**, **height**, **backgroundColor**, **opacity**, **scale**, **rotate**, and **translate**.
You can animate certain properties of a component, including **width**, **height**, **backgroundColor**, **opacity**, **scale**, **rotate**, and **translate**.
> **NOTE**
>
> This event is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.
@@ -33,7 +33,7 @@ Since API version 9, this API is supported in ArkTS widgets.
| [lineCap](#linecap) | CanvasLineCap | Style of the line endpoints. The options are as follows:<br>- **butt**: The endpoints of the line are squared off.<br>- **round**: The endpoints of the line are rounded.<br>- **square**: The endpoints of the line are squared off, and each endpoint has added a rectangle whose length is the same as the line thickness and whose width is half of the line thickness.<br>- Default value: **'butt'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| [lineJoin](#linejoin) | CanvasLineJoin | Style of the shape used to join line segments. The options are as follows:<br>- **round**: The intersection is a sector, whose radius at the rounded corner is equal to the line width.<br>- **bevel**: The intersection is a triangle. The rectangular corner of each line is independent.<br>- **miter**: The intersection has a miter corner by extending the outside edges of the lines until they meet. You can view the effect of this attribute in **miterLimit**.<br>- Default value: **'miter'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| [miterLimit](#miterlimit) | number | Maximum miter length. The miter length is the distance between the inner corner and the outer corner where two lines meet.<br>- Default value: **10**<br>Since API version 9, this API is supported in ArkTS widgets.|
| [font](#font) | string | Font style.<br>Syntax: ctx.font='font-size font-family'<br>- (Optional) **font-size**: font size and row height. The unit can only be pixels.<br>(Optional) **font-family**: font family.<br>Syntax: ctx.font='font-style font-weight font-size font-family'<br>- (Optional) **font-style**: font style. Available values are **normal** and **italic**.<br>- (Optional) **font-weight**: font weight. Available values are as follows: **normal**, **bold**, **bolder**, **lighter**, **100**, **200**, **300**, **400**, **500**, **600**, **700**, **800**, **900**.<br>- (Optional) **font-size**: font size and line height. The unit must be specified and can only be px or vp.<br>- (Optional) **font-family**: font family. Available values are **sans-serif**, **serif**, and **monospace**.<br>Default value: **'normal normal 14px sans-serif'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| [font](#font) | string | Font style.<br>Syntax: ctx.font='font-size font-family'<br>- (Optional) **font-size**: font size and line height. The unit can only be pixels.<br>(Optional) **font-family**: font family.<br>Syntax: ctx.font='font-style font-weight font-size font-family'<br>- (Optional) **font-style**: font style. Available values are **normal** and **italic**.<br>- (Optional) **font-weight**: font weight. Available values are as follows: **normal**, **bold**, **bolder**, **lighter**, **100**, **200**, **300**, **400**, **500**, **600**, **700**, **800**, **900**.<br>- (Optional) **font-size**: font size and line height. The unit can be px or vp and must be specified.<br>- (Optional) **font-family**: font family. Available values are **sans-serif**, **serif**, and **monospace**.<br>Default value: **'normal normal 14px sans-serif'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| [textAlign](#textalign) | CanvasTextAlign | Text alignment mode. Available values are as follows:<br>- **left**: The text is left-aligned.<br>- **right**: The text is right-aligned.<br>- **center**: The text is center-aligned.<br>- **start**: The text is aligned with the start bound.<br>- **end**: The text is aligned with the end bound.<br>**NOTE**<br><br>In the **ltr** layout mode, the value **'start'** equals **'left'**. In the **rtl** layout mode, the value **'start'** equals **'right'**.<br>- Default value: **'left'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| [textBaseline](#textbaseline) | CanvasTextBaseline | Horizontal alignment mode of text. Available values are as follows:<br>- **alphabetic**: The text baseline is the normal alphabetic baseline.<br>- **top**: The text baseline is on the top of the text bounding box.<br>- **hanging**: The text baseline is a hanging baseline over the text.<br>- **middle**: The text baseline is in the middle of the text bounding box.<br>**'ideographic'**: The text baseline is the ideographic baseline. If a character exceeds the alphabetic baseline, the ideographic baseline is located at the bottom of the excess character.<br>- **bottom**: The text baseline is at the bottom of the text bounding box. Its difference from the ideographic baseline is that the ideographic baseline does not consider letters in the next line.<br>- Default value: **'alphabetic'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| PageTransitionEnter | {<br>type?: RouteType,<br>duration?: number,<br>curve?: [Curve](ts-appendix-enums.md#curve)\| string,<br>delay?: number<br>} | No | Page entrance animation.<br>- **type**: route type for the page transition effect to take effect.<br>Default value: **RouteType.None**<br>- **duration**: animation duration.<br>Unit: ms<br>Default value: **1000**<br>- **curve**: animation curve. The value of the string type can be any of the following: "ease", "ease-in", "ease-out", "ease-in-out", "extreme-deceleration", "fast-out-linear-in", "fast-out-slow-in", "friction", "linear", "linear-out-slow-in", "rhythm", "sharp", "smooth".<br>Default value: **Curve.Linear**<br>- **delay**: animation delay.<br>Unit: ms<br>Default value: **0**<br>**NOTE**<br>If no match is found, the default page transition effect is used (which may vary according to the device). To disable the default page transition effect, set **duration** to **0**.|
| PageTransitionExit | {<br>type?: RouteType,<br>duration?: number,<br>curve?: [Curve](ts-appendix-enums.md#curve)\| string,<br>delay?: number<br>} | No | Page exit animation.<br>- **type**: route type for the page transition effect to take effect.<br>Default value: **RouteType.None**<br>- **duration**: animation duration.<br>Unit: ms<br>Default value: **1000**<br>- **curve**: animation curve. The value range of the string type is the same as that of **PageTransitionEnter**.<br>Default value: **Curve.Linear**<br>- **delay**: animation delay.<br>Unit: ms<br>Default value: **0**<br>**NOTE**<br>If no match is found, the default page transition effect is used (which may vary according to the device). To disable the default page transition effect, set **duration** to **0**.|
| PageTransitionEnter | {<br>type?: RouteType,<br>duration?: number,<br>curve?: [Curve](ts-appendix-enums.md#curve)\| string\|[ICurve](../apis/js-apis-curve.md#icurve)<sup>10+</sup>,<br>delay?: number<br>} | No | Page entrance animation.<br>- **type**: route type for the page transition effect to take effect.<br>Default value: **RouteType.None**<br>- **duration**: animation duration.<br>Unit: ms<br>Default value: **1000**<br>- **curve**: animation curve. The value of the string type can be any of the following: "ease", "ease-in", "ease-out", "ease-in-out", "extreme-deceleration", "fast-out-linear-in", "fast-out-slow-in", "friction", "linear", "linear-out-slow-in", "rhythm", "sharp", "smooth".<br>Default value: **Curve.Linear**<br>- **delay**: animation delay.<br>Unit: ms<br>Default value: **0**<br>**NOTE**<br>If no match is found, the default page transition effect is used (which may vary according to the device). To disable the default page transition effect, set **duration** to **0**.|
| PageTransitionExit | {<br>type?: RouteType,<br>duration?: number,<br>curve?: [Curve](ts-appendix-enums.md#curve)\| string\|[ICurve](../apis/js-apis-curve.md#icurve)<sup>10+</sup>,<br>delay?: number<br>} | No | Page exit animation.<br>- **type**: route type for the page transition effect to take effect.<br>Default value: **RouteType.None**<br>- **duration**: animation duration.<br>Unit: ms<br>Default value: **1000**<br>- **curve**: animation curve. The value range of the string type is the same as that of **PageTransitionEnter**.<br>Default value: **Curve.Linear**<br>- **delay**: animation delay.<br>Unit: ms<br>Default value: **0**<br>**NOTE**<br>If no match is found, the default page transition effect is used (which may vary according to the device). To disable the default page transition effect, set **duration** to **0**.|
| sharedTransition | id: string,<br>{<br> duration?: number,<br> curve?: Curve \| string,<br> delay?: number,<br> motionPath?: <br>{<br> path: string,<br> form?: number,<br> to?: number,<br> rotatable?: boolean<br>},<br>zIndex?: number,<br>type?: [SharedTransitionEffectType](ts-appendix-enums.md#sharedtransitioneffecttype)<br>} | Transition of the shared element. If the same **id** value is configured for a component on the two pages, this component is considered as a shared element of the pages. If the **id** value is an empty string, no transition will be applied to the component.<br>- **id**: component ID.<br>- **duration**: animation duration.<br>Default value: **1000**<br>Unit: ms<br>Value range: [0, +∞)<br>The value **0** indicates that no animation is applied. A value less than 0 evaluates to the default value **1000**.<br>- **curve**: animation curve. The default curve is **Linear**. For details about the valid values, see [Curve](ts-animatorproperty.md).<br>- **delay**: animation delay.<br>Default value: **0**<br>Unit: ms<br>Value range: [0, +∞)<br>A value less than 0 evaluates to the value **0**.<br>- **motionPath**: motion path information. For details, see [Motion Path Animation](ts-motion-path-animation.md).<br>- **path**: path.<br>- **from**: start value.<br>- **to**: end value.<br>- **rotatable**: whether to rotate.<br>- **zIndex**: z-axis.<br>- **type**: animation type.|
| sharedTransition | id: string,<br>{<br> duration?: number,<br> curve?: [Curve](ts-appendix-enums.md#curve)\| string \|[ICurve](../apis/js-apis-curve.md#icurve)<sup>10+</sup>,<br> delay?: number,<br> motionPath?: <br>{<br> path: string,<br> form?: number,<br> to?: number,<br> rotatable?: boolean<br>},<br>zIndex?: number,<br>type?: [SharedTransitionEffectType](ts-appendix-enums.md#sharedtransitioneffecttype)<br>} | Transition of the shared element. If the same **id** value is configured for a component on the two pages, this component is considered as a shared element of the pages. If the **id** value is an empty string, no transition will be applied to the component.<br>- **id**: component ID.<br>- **duration**: animation duration.<br>Default value: **1000**<br>Unit: ms<br>Value range: [0, +∞)<br>The value **0** indicates that no animation is applied. A value less than 0 evaluates to the default value **1000**.<br>- **curve**: animation curve. The default curve is **Curve.Linear**.<br>- **delay**: animation delay.<br>Default value: **0**<br>Unit: ms<br>Value range: [0, +∞)<br>A value less than 0 evaluates to the value **0**.<br>- **motionPath**: motion path information. For details, see [Motion Path Animation](ts-motion-path-animation.md).<br>- **path**: path.<br>- **from**: start value.<br>- **to**: end value.<br>- **rotatable**: whether to rotate.<br>- **zIndex**: z-axis.<br>- **type**: animation type.|
@@ -53,8 +53,8 @@ You can draw custom graphics on the canvas in any of the following ways:
// Configure the parameters of the CanvasRenderingContext2D and OffscreenCanvasRenderingContext2D objects, including whether to enable anti-aliasing. The value true indicates that anti-aliasing is enabled.
// Create an OffscreenCanvasRenderingContext2D object. width indicates the width of the offscreen canvas, and height indicates the height of the offscreen canvas.
// Display the image rendered by the offscreen drawing value on the common canvas.
letimage=this.offContext.transferToImageBitmap();
letimage=this.offCanvas.transferToImageBitmap();
this.context.transferFromImageBitmap(image);
})
}
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@@ -113,7 +114,7 @@ Canvas(this.context)
## Canvas Component Drawing Modes
Two modes are available for drawing with the **Canvas** component:
Two modes are available for drawing with the **Canvas** component:
- After the **onReady()** callback of the **Canvas** component is invoked, use the **CanvasRenderingContext2D** and **OffscreenCanvasRenderingContext2D** objects to call related APIs for drawing.
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@@ -154,9 +155,8 @@ Two modes are available for drawing with the **Canvas** component:
**OffscreenCanvasRenderingContext2D** and **CanvasRenderingContext2D** provide a large number of attributes and methods, which can be used to draw text and graphics and process pixels. They are the core of the **Canvas** component. Common APIs include [fill](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#fill), [clip](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#clip), and [stroke](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#stroke). In addition, [fillStyle](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#fillstyle), [globalAlpha](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#globalalpha), [strokeStyle](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#strokestyle), and more attributes are provided to spruce up the graphics. This topic describes typical usage of the canvas.
- Draw a basic shape.
You can draw a basic shape by calling APIs such as [arc](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#arc), [ellipse](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#ellipse), and [rect](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#rect).
```ts
Canvas(this.context)
.width('100%')
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@@ -175,12 +175,12 @@ Two modes are available for drawing with the **Canvas** component:
You can use APIs such as [fillText](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#filltext) and [strokeText](../reference/arkui-ts/ts-canvasrenderingcontext2d.md#stroketext) to draw text.
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@@ -212,7 +212,7 @@ Two modes are available for drawing with the **Canvas** component:
