Doric/doric-demo/src/SliderDemo.ts

import { Group, Panel, text, gravity, Gravity, Color, LayoutSpec, vlayout, slider, slideItem, image, layoutConfig, ScaleType, switchView, hlayout } from "doric";
import { colors } from "./utils";

const imageUrls = [
    'http://b.hiphotos.baidu.com/image/pic/item/908fa0ec08fa513db777cf78376d55fbb3fbd9b3.jpg',
    'http://f.hiphotos.baidu.com/image/pic/item/0e2442a7d933c8956c0e8eeadb1373f08202002a.jpg',
    'http://f.hiphotos.baidu.com/image/pic/item/b151f8198618367aa7f3cc7424738bd4b31ce525.jpg',
    'http://b.hiphotos.baidu.com/image/pic/item/0eb30f2442a7d9337119f7dba74bd11372f001e0.jpg',
    'http://a.hiphotos.baidu.com/image/h%3D300/sign=b38f3fc35b0fd9f9bf175369152cd42b/9a504fc2d5628535bdaac29e9aef76c6a6ef63c2.jpg',
    'http://h.hiphotos.baidu.com/image/pic/item/810a19d8bc3eb1354c94a704ac1ea8d3fd1f4439.jpg',
    'http://calonye.com/wp-content/uploads/2015/08/0-wx_fmtgiftpwebpwxfrom5wx_lazy1-9.gif',
    'http://hbimg.b0.upaiyun.com/ca29ea125b7f2d580f573e48eb594b1ef509757f34a08-m0hK45_fw658',
    'https://misc.aotu.io/ONE-SUNDAY/SteamEngine.png',
]
@Entry
class SliderPanel extends Panel {
    build(rootView: Group): void {
        let pager = slider({
            itemCount: imageUrls.length,
            renderPage: (idx) => {
                return slideItem(image({
                    imageUrl: imageUrls[idx % imageUrls.length],
                    scaleType: ScaleType.ScaleAspectFit,
                    layoutConfig: layoutConfig().configWidth(LayoutSpec.MOST).configHeight(LayoutSpec.MOST).configAlignment(gravity().center()),
                })).also(it => {
                    let start = idx
                    it.onClick = () => {
                        it.backgroundColor = (colors[++start % colors.length])
                    }
                })
            },
            layoutConfig: {
                widthSpec: LayoutSpec.MOST,
                heightSpec: LayoutSpec.MOST,
                weight: 1,
            },
        })

        rootView.addChild(vlayout([
            text({
                text: "Gallery",
                layoutConfig: {
                    widthSpec: LayoutSpec.MOST,
                    heightSpec: LayoutSpec.JUST,
                },
                textSize: 30,
                textColor: Color.WHITE,
                backgroundColor: colors[1],
                textAlignment: gravity().center(),
                height: 50,
            }),
            hlayout([
                text({
                    text: "Loop",
                    layoutConfig: {
                        widthSpec: LayoutSpec.FIT,
                        heightSpec: LayoutSpec.JUST,
                    },
                    textSize: 20,
                    textColor: Color.BLACK,
                    textAlignment: gravity().center(),
                    height: 50,
                }),
                switchView({
                    state: false,
                    onSwitch: (state) => {
                        pager.loop = state
                    },
                }),
            ], {
                layoutConfig: layoutConfig().most().configHeight(LayoutSpec.FIT),
                gravity: gravity().center(),
                space: 10,
                backgroundColor: Color.RED,
            }),
            pager,
        ]).also(it => {
            it.layoutConfig = {
                widthSpec: LayoutSpec.MOST,
                heightSpec: LayoutSpec.MOST,
            }
        }))
    }
}