204 lines
5.7 KiB
JavaScript
204 lines
5.7 KiB
JavaScript
var nvMask, nvImageMenu;
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class NvImageMenu {
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constructor(arg) {
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this.isShow = false
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}
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show({
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list,
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cancelText
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}, callback) {
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if (!list) {
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list = [{
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"img": "/static/sharemenu/wechatfriend.png",
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"text": "图标文字"
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}]
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}
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//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
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var screenWidth = plus.screen.resolutionWidth
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//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
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//图标下的按钮文字距离图标5像素，文字大小12像素
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//底部取消按钮高度固定为44px
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//TODO 未处理横屏和pad，这些情况6个图标应该一排即可
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var margin = 20,
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iconWidth = 60,
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icontextSpace = 5,
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textHeight = 12
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var left1 = margin / 360 * screenWidth
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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
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if (iconSpace <= 5) { //屏幕过窄时，缩小边距和图标大小，再算一次
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margin = 15
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iconWidth = 40
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left1 = margin / 360 * screenWidth
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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
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}
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var left2 = left1 + iconWidth + iconSpace
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var left3 = left1 + (iconWidth + iconSpace) * 2
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var left4 = left1 + (iconWidth + iconSpace) * 3
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var top1 = left1
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var top2 = top1 + iconWidth + icontextSpace + textHeight + left1
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const TOP = {
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top1,
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top2
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},
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LEFT = {
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left1,
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left2,
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left3,
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left4
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};
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nvMask = new plus.nativeObj.View("nvMask", { //先创建遮罩层
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top: '0px',
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left: '0px',
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height: '100%',
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width: '100%',
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backgroundColor: 'rgba(0,0,0,0.2)'
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});
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nvImageMenu = new plus.nativeObj.View("nvImageMenu", { //创建底部图标菜单
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bottom: '0px',
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left: '0px',
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height: (iconWidth + textHeight + 2 * margin) * Math.ceil(list.length / 4) + 44 +
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'px', //'264px',
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width: '100%',
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backgroundColor: 'rgb(255,255,255)'
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});
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nvMask.addEventListener("click", () => { //处理遮罩层点击
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// console.log('处理遮罩层点击');
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this.hide()
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callback({
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event: "clickMask"
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})
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})
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let myList = []
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list.forEach((item, i) => {
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myList.push({
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tag: 'img',
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src: item.img,
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position: {
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top: TOP['top' + (parseInt(i / 4) + 1)],
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left: LEFT['left' + (1 + i % 4)],
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width: iconWidth,
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height: iconWidth
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}
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})
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myList.push({
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tag: 'font',
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text: item.text,
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textStyles: {
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size: textHeight
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},
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position: {
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top: TOP['top' + (parseInt(i / 4) + 1)] + iconWidth + icontextSpace,
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left: LEFT['left' + (1 + i % 4)],
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width: iconWidth,
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height: textHeight
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}
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})
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})
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//绘制底部图标菜单的内容
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nvImageMenu.draw([{
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tag: 'rect', //菜单顶部的分割灰线
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color: '#e7e7e7',
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position: {
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top: '0px',
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height: '1px'
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}
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},
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{
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tag: 'font',
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text: cancelText, //底部取消按钮的文字
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textStyles: {
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size: '14px'
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},
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position: {
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bottom: '0px',
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height: '44px'
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}
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},
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{
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tag: 'rect', //底部取消按钮的顶部边线
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color: '#e7e7e7',
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position: {
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bottom: '45px',
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height: '1px'
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}
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},
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...myList
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])
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nvMask.show()
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nvImageMenu.show()
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// 开始动画
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/*
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plus.nativeObj.View.startAnimation({
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type: 'slide-in-bottom',
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duration: 300
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}, nvImageMenu, {}, function() {
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console.log('plus.nativeObj.View.startAnimation动画结束');
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// 关闭原生动画
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plus.nativeObj.View.clearAnimation();
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nvImageMenu.show()
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});
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*/
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this.isShow = true
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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
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// console.log("click menu"+JSON.stringify(e));
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if (e.screenY > plus.screen.resolutionHeight - 44) { //点击了底部取消按钮
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// callback({event:"clickCancelButton"})
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this.hide()
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} else if (e.clientX < 5 || e.clientX > screenWidth - 5 || e.clientY < 5) {
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//屏幕左右边缘5像素及菜单顶部5像素不处理点击
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} else { //点击了图标按钮
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var iClickIndex = -1 //点击的图标按钮序号，第一个图标按钮的index为0
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var iRow = e.clientY < (top2 - (left1 / 2)) ? 0 : 1
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var iCol = -1
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if (e.clientX < (left2 - (iconSpace / 2))) {
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iCol = 0
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} else if (e.clientX < (left3 - (iconSpace / 2))) {
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iCol = 1
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} else if (e.clientX < (left4 - (iconSpace / 2))) {
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iCol = 2
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} else {
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iCol = 3
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}
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if (iRow == 0) {
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iClickIndex = iCol
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} else {
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iClickIndex = iCol + 4
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}
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// console.log("点击按钮的序号: " + iClickIndex);
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// 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
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// }
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callback({
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event: "clickMenu",
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index: iClickIndex
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})
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}
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})
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/* nvImageMenu.addEventListener("touchstart", function(e) {
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if (e.screenY > (plus.screen.resolutionHeight - 44)) {
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//TODO 这里可以处理按下背景变灰的效果
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}
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})
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nvImageMenu.addEventListener("touchmove", function(e) {
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//TODO 这里可以处理按下背景变灰的效果
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if (e.screenY > plus.screen.resolutionHeight - 44) {}
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})
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nvImageMenu.addEventListener("touchend", function(e) {
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//TODO 这里可以处理释放背景恢复的效果
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})
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*/
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}
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hide() {
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if (this.isShow) {
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nvMask.hide()
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nvImageMenu.hide()
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this.isShow = false
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}
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}
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}
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export default NvImageMenu |