harmony 鸿蒙marquee
marquee
The <marquee> component is used to display a scrolling piece of text.
NOTE
This component is supported since API version 4. Updates will be marked with a superscript to indicate their earliest API version.
Child Components
Not supported
Attributes
Name | Type | Default Value | Mandatory | Description |
---|---|---|---|---|
scrollamount | number | 6 | No | Maximum length of each scroll. |
id | string | - | No | Unique ID of the component. |
style | string | - | No | Style declaration of the component. |
class | string | - | No | Style class of the component, which is used to refer to a style table. |
ref | string | - | No | Reference information of child elements, which is registered with the parent component on $refs. |
Events
Name | Parameter | Description |
---|---|---|
click | - | Triggered when the component is clicked. |
longpress | - | Triggered when the component is long pressed. |
swipe5+ | SwipeEvent | Triggered when a user quickly swipes on the component. |
Styles
Name | Type | Default Value | Mandatory | Description |
---|---|---|---|---|
color | <color> | #ffffff |
No | Font color of the scrolling text. |
font-size | <length> | 30 |
No | Font size of the scrolling text. |
font-family | string | SourceHanSansSC-Regular |
No | Font. Only the SourceHanSansSC-Regular font is supported. |
width | <length> |<percentage>5+ | - | No | Component width. If this attribute is not set, the default value 0 is used. |
height | <length> |<percentage>5+ | - | No | Component height. If this attribute is not set, the default value 0 is used. |
padding | <length> | 0 | No | Shorthand attribute to set the padding for all sides. The attribute can have one to four values: - If you set only one value, it specifies the padding for all the four sides. - If you set two values, the first value specifies the top and bottom padding, and the second value specifies the left and right padding. - If you set three values, the first value specifies the top padding, the second value specifies the left and right padding, and the third value specifies the bottom padding. - If you set four values, they respectively specify the padding for top, right, bottom, and left sides (in clockwise order). |
padding-[left|top|right|bottom] | <length> | 0 | No | Left, top, right, and bottom padding. |
margin | <length> |<percentage>5+ | 0 | No | Shorthand attribute to set the margin for all sides. The attribute can have one to four values: - If you set only one value, it specifies the margin for all the four sides. - If you set two values, the first value specifies the top and bottom margins, and the second value specifies the left and right margins. - If you set three values, the first value specifies the top margin, the second value specifies the left and right margins, and the third value specifies the bottom margin. - If you set four values, they respectively specify the margin for top, right, bottom, and left sides (in clockwise order). |
margin-[left|top|right|bottom] | <length> |<percentage>5+ | 0 | No | Left, top, right, and bottom margins. |
border-width | <length> | 0 | No | Shorthand attribute to set the margin for all sides. |
border-color | <color> | black | No | Shorthand attribute to set the color for all borders. |
border-radius | <length> | - | No | Radius of round-corner borders. |
background-color | <color> | - | No | Background color. |
opacity5+ | number | 1 | No | Opacity of an element. The value ranges from 0 to 1. The value 1 means opaque, and 0 means completely transparent. |
display | string | flex | No | How and whether to display the box containing an element. Available values are as follows: - flex: flexible layout - none: not rendered |
[left|top] | <length> |<percentage>6+ | - | No | left|Edge of the element. - left: left edge position of the element. This attribute defines the offset between the left edge of the margin area of a positioned element and left edge of its containing block. - top: top edge position of the element. This attribute defines the offset between the top edge of a positioned element and that of a block included in the element. |
Example
<!-- xxx.hml -->
<div class="container">
<marquee class="customMarquee" scrollamount="{{scrollAmount}}">{{marqueeCustomData}}</marquee>
<text class="text" onclick="addSpeed">speed+</text>
<text class="text" onclick="downSpeed">speed-</text>
<text class="text" onclick="changeData">changeData</text>
</div>
/* xxx.css */
.container {
flex-direction: column;
width: 100%;
height: 100%;
flex-direction: column;
align-items: center;
}
.customMarquee {
width: 50%;
height: 80px;
padding: 10px;
margin: 20px;
border-width: 4px;
border-color: #ffffff;
border-radius: 20px;
font-size: 38px;
}
.text {
font-size: 30px;
text-align: center;
width: 30%;
height: 10%;
margin-top: 5%;
background-color: #f2f2f2;
border-radius: 40px;
color: #0d81f2;
}
// xxx.js
export default {
data: {
scrollAmount: 30,
marqueeCustomData: 'Custom marquee Custom marquee Custom marquee'
},
addSpeed() {
this.scrollAmount++;
},
downSpeed() {
this.scrollAmount--;
},
changeData() {
this.marqueeCustomData = 'Change Data Change Data Change Data';
}
}
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