shop-applet/uni_modules/uni-share/js_sdk/uni-image-menu.js

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2023-09-20 18:16:59 +08:00
var nvMask, nvImageMenu;
class NvImageMenu {
constructor(arg) {
this.isShow = false
}
show({
list,
cancelText
}, callback) {
if (!list) {
list = [{
"img": "/static/sharemenu/wechatfriend.png",
"text": "图标文字"
}]
}
//以下为计算菜单的nview绘制布局为固定算法使用者无关关心
var screenWidth = plus.screen.resolutionWidth
//以360px宽度屏幕为例上下左右边距及2排按钮边距留25像素图标宽度55像素同行图标间的间距在360宽的屏幕是30px但需要动态计算以此原则计算4列图标分别的left位置
//图标下的按钮文字距离图标5像素文字大小12像素
//底部取消按钮高度固定为44px
//TODO 未处理横屏和pad这些情况6个图标应该一排即可
var margin = 20,
iconWidth = 60,
icontextSpace = 5,
textHeight = 12
var left1 = margin / 360 * screenWidth
var iconSpace = (screenWidth - (left1 * 2) - (iconWidth * 4)) / 3 //屏幕宽度减去左右留白间距再减去4个图标的宽度就是3个同行图标的间距
if (iconSpace <= 5) { //屏幕过窄时,缩小边距和图标大小,再算一次
margin = 15
iconWidth = 40
left1 = margin / 360 * screenWidth
iconSpace = (screenWidth - (left1 * 2) - (iconWidth * 4)) / 3 //屏幕宽度减去左右留白间距再减去4个图标的宽度就是3个同行图标的间距
}
var left2 = left1 + iconWidth + iconSpace
var left3 = left1 + (iconWidth + iconSpace) * 2
var left4 = left1 + (iconWidth + iconSpace) * 3
var top1 = left1
var top2 = top1 + iconWidth + icontextSpace + textHeight + left1
const TOP = {
top1,
top2
},
LEFT = {
left1,
left2,
left3,
left4
};
nvMask = new plus.nativeObj.View("nvMask", { //先创建遮罩层
top: '0px',
left: '0px',
height: '100%',
width: '100%',
backgroundColor: 'rgba(0,0,0,0.2)'
});
nvImageMenu = new plus.nativeObj.View("nvImageMenu", { //创建底部图标菜单
bottom: '0px',
left: '0px',
height: (iconWidth + textHeight + 2 * margin) * Math.ceil(list.length / 4) + 44 +
'px', //'264px',
width: '100%',
backgroundColor: 'rgb(255,255,255)'
});
nvMask.addEventListener("click", () => { //处理遮罩层点击
// console.log('处理遮罩层点击');
this.hide()
callback({
event: "clickMask"
})
})
let myList = []
list.forEach((item, i) => {
myList.push({
tag: 'img',
src: item.img,
position: {
top: TOP['top' + (parseInt(i / 4) + 1)],
left: LEFT['left' + (1 + i % 4)],
width: iconWidth,
height: iconWidth
}
})
myList.push({
tag: 'font',
text: item.text,
textStyles: {
size: textHeight
},
position: {
top: TOP['top' + (parseInt(i / 4) + 1)] + iconWidth + icontextSpace,
left: LEFT['left' + (1 + i % 4)],
width: iconWidth,
height: textHeight
}
})
})
//绘制底部图标菜单的内容
nvImageMenu.draw([{
tag: 'rect', //菜单顶部的分割灰线
color: '#e7e7e7',
position: {
top: '0px',
height: '1px'
}
},
{
tag: 'font',
text: cancelText, //底部取消按钮的文字
textStyles: {
size: '14px'
},
position: {
bottom: '0px',
height: '44px'
}
},
{
tag: 'rect', //底部取消按钮的顶部边线
color: '#e7e7e7',
position: {
bottom: '45px',
height: '1px'
}
},
...myList
])
nvMask.show()
nvImageMenu.show()
// 开始动画
/*
plus.nativeObj.View.startAnimation({
type: 'slide-in-bottom',
duration: 300
}, nvImageMenu, {}, function() {
console.log('plus.nativeObj.View.startAnimation动画结束');
// 关闭原生动画
plus.nativeObj.View.clearAnimation();
nvImageMenu.show()
});
*/
this.isShow = true
nvImageMenu.addEventListener("click", e => { //处理底部图标菜单的点击事件,根据点击位置触发不同的逻辑
// console.log("click menu"+JSON.stringify(e));
if (e.screenY > plus.screen.resolutionHeight - 44) { //点击了底部取消按钮
// callback({event:"clickCancelButton"})
this.hide()
} else if (e.clientX < 5 || e.clientX > screenWidth - 5 || e.clientY < 5) {
//屏幕左右边缘5像素及菜单顶部5像素不处理点击
} else { //点击了图标按钮
var iClickIndex = -1 //点击的图标按钮序号第一个图标按钮的index为0
var iRow = e.clientY < (top2 - (left1 / 2)) ? 0 : 1
var iCol = -1
if (e.clientX < (left2 - (iconSpace / 2))) {
iCol = 0
} else if (e.clientX < (left3 - (iconSpace / 2))) {
iCol = 1
} else if (e.clientX < (left4 - (iconSpace / 2))) {
iCol = 2
} else {
iCol = 3
}
if (iRow == 0) {
iClickIndex = iCol
} else {
iClickIndex = iCol + 4
}
// console.log("点击按钮的序号: " + iClickIndex);
// if (iClickIndex >= 0 && iClickIndex <= 5) { //处理具体的点击逻辑,此处也可以自行定义逻辑。如果增减了按钮,此处也需要跟着修改
// }
callback({
event: "clickMenu",
index: iClickIndex
})
}
})
/* nvImageMenu.addEventListener("touchstart", function(e) {
if (e.screenY > (plus.screen.resolutionHeight - 44)) {
//TODO 这里可以处理按下背景变灰的效果
}
})
nvImageMenu.addEventListener("touchmove", function(e) {
//TODO 这里可以处理按下背景变灰的效果
if (e.screenY > plus.screen.resolutionHeight - 44) {}
})
nvImageMenu.addEventListener("touchend", function(e) {
//TODO 这里可以处理释放背景恢复的效果
})
*/
}
hide() {
if (this.isShow) {
nvMask.hide()
nvImageMenu.hide()
this.isShow = false
}
}
}
export default NvImageMenu