Init project

2023-09-20 21:49:33 +08:00
parent 85a5989c96
commit c9ceac9f37
710 changed files with 125705 additions and 0 deletions
@@ -0,0 +1,82 @@
+let windowWidth = uni.getSystemInfoSync().windowWidth
+// uni-app@2.9起, 屏幕最多适配到960, 超出则按375计算
+if (windowWidth > 960) windowWidth = 375
+
+export const rpx2px = (value) => {
+  if (typeof value === 'string') value = Number(value.replace(/[a-z]*/g, ''))
+  return windowWidth / 750 * value
+}
+
+export const changeUnits = (value) => {
+  return Number(value.replace(/^(\-*[0-9.]*)([a-z%]*)$/, (value, num, unit) => {
+    switch (unit) {
+      case 'px':
+        num *= 1
+        break
+      case 'rpx':
+        num = rpx2px(num)
+        break
+      default:
+        num *= 1
+        break
+    }
+    return num
+  }))
+}
+
+export const resolveImage = async (img, canvas, srcName = 'src', resolveName = '$resolve') => {
+  let imgObj
+  // 区分 H5 和小程序
+  if (window) {
+    imgObj = new Image()
+  } else {
+    imgObj = canvas.createImage()
+  }
+  // 成功回调
+  imgObj.onload = () => {
+    img[resolveName](imgObj)
+  }
+  // 失败回调
+  imgObj.onerror = (err) => {
+    console.error(err)
+    // img['$reject']()
+  }
+  // 设置src
+  imgObj.src = img[srcName]
+}
+
+// 旧版canvas引入图片的方法
+// export const resolveImage = async (res, img, imgName = 'src', resolveName = '$resolve') => {
+//   const src = img[imgName]
+//   const $resolve = img[resolveName]
+//   // #ifdef MP
+//   // 如果是base64就调用base64src()方法把图片写入本地, 然后渲染临时路径
+//   if (/^data:image\/([a-z]+);base64,/.test(src)) {
+//     const path = await base64src(src)
+//     $resolve({ ...res.detail, path })
+//     return
+//   }
+//   // #endif
+//   // 如果是本地图片, 直接返回
+//   if (src.indexOf('http') !== 0) {
+//     $resolve({ ...res.detail, path:src })
+//     return
+//   }
+//   // 如果是网络图片, 则通过getImageInfo()方法获取图片宽高
+//   uni.getImageInfo({
+//     src: src,
+//     success: (imgObj) => $resolve(imgObj),
+//     fail: () => console.error('API `uni.getImageInfo` 加载图片失败', src)
+//   })
+// }
+
+export function getImage(canvasId, canvas) {
+  return new Promise((resolve, reject) => {
+    uni.canvasToTempFilePath({
+      canvas,
+      canvasId,
+      success: res => resolve(res),
+      fail: err => reject(err)
+    }, this)
+  })
+}