wxmini/pages/piano/cropper/cropper.js

// pages/piano/cropper/cropper.js

const { BtCmd } = require('../../../devices/bluetooth/bt_cmd');
import EventManager from '../../../utils/event_bus'
import { EnumCmdEvent, CmdEvent } from '../../../devices/cmd_key_event';
import route_util from '../../../utils/route_util';
const { BtHelper } = require('../../../devices/bt_helper');

Page({

  /**
   * 页面的初始数据
   */
  data: {
    navbarData: {
      showCapsule: 1, //是否显示左上角图标   1表示显示    0表示不显示
      title: '壁纸设置', //导航栏 中间的标题

    },
    src: "",
    width: 320,//宽度
    height: 320,//高度
    showProgress: false,
    _chunks: [],
    progress: 0,
    _timer: null,
    _imgUrl: null,
  },
  cropper: null,
  callback() {
    let that = this
    if (this.data._chunks.length > 0) {
      wx.showModal({
        title: '保存图片中，确定要中断退出吗？',
        content: '',
        complete: (res) => {
          if (res.confirm) {
            that.endImage(2)
            wx.navigateBack({
              delta: 1,
            })
          }
        }
      })
    } else {
      wx.navigateBack({
        delta: 1,
      })
    }
  },
  // 图片转RGB565
  convertToRGB565(imageData) {
    const { data, width, height } = imageData;
    // 原始像素数据 (RGBA 格式)
    const rgba = new Uint8Array(data);

    // 创建 RGB565 的 ArrayBuffer
    const pixelCount = width * height;
    const rgb565Buffer = new ArrayBuffer(pixelCount * 2); // 每像素 2 字节
    const rgb565View = new Uint16Array(rgb565Buffer);

    // 转换每个像素
    for (let i = 0; i < pixelCount; i++) {
      const r = rgba[i * 4];     // Red
      const g = rgba[i * 4 + 1]; // Green
      const b = rgba[i * 4 + 2]; // Blue

      // RGB565 的位运算
      const r5 = (r >> 3) & 0x1F; // R 的高 5 位
      const g6 = (g >> 2) & 0x3F; // G 的高 6 位
      const b5 = (b >> 3) & 0x1F; // B 的高 5 位

      // 组合成 RGB565 格式
      const rgb565 = (r5 << 11) | (g6 << 5) | b5;

      // 写入到 RGB565 的 buffer 中
      rgb565View[i] = rgb565;
    }

    return rgb565Buffer;
  },
  cropperload(e) {
    console.log('cropper加载完成');
  },
  upload() {
    let that = this;
    wx.chooseMedia({
      count: 1,
      mediaType: ['image'],
      sourceType: ['album'],
      success(res) {
        wx.showLoading({
          title: '加载中',
        })
        const tempFilePaths = res.tempFiles[0].tempFilePath;
        //重置图片角度、缩放、位置
        that.cropper.imgReset();
        that.setData({
          src: tempFilePaths
        });
      }
    })
  },
  loadimage(e) {
    wx.hideLoading();
    console.log('图片', e);
    this.cropper.imgReset();
  },
  clickcut(e) {
    console.log("clickcut:", e.detail);
    //图片预览
    wx.previewImage({
      current: e.detail.url,
      urls: [e.detail.url]
    })
  },
  cancel() {
    wx.navigateBack({
      delta: -1
    })
  },
  submit() {
    let _this = this
    wx.showLoading({
      title: '图片裁剪中',
    })
    const fs = wx.getFileSystemManager();
    this.cropper.getImg((obj) => {
      // app.globalData.imgSrc = obj.url;
      console.log("裁剪图片:", obj);
      _this.data._imgUrl = obj.url
      fs.readFile({
        filePath: obj.url,
        encoding: '', // 不指定编码以获取原始二进制数据
        success: (res) => {
          console.log("下载文件成功:", res)
          let rgbData = _this.convertToRGB565({
            width: obj.width,
            height: obj.height,
            data: res.data
          })
          console.log("下载文件成功2:", rgbData.byteLength)
          _this.data._imageBufferLength = rgbData.byteLength
          wx.hideLoading();
          wx.showLoading({
            title: '开始传输图片',
          })
          _this.startImage(rgbData);
          // 测试
          // _this.sendImage()
          // _this.startProgress()
        },
        fail: (err) => {
          console.error('读取 .bin 文件失败：', err);
        },
      });
    });
    // 651kb的
    // _this.downloadAndSaveFile("https://music-play.oss-cn-shenzhen.aliyuncs.com/backOss/file/6a909799a6924e6f86a4683e6da4fad4.bin");
    // 55kb的
    // _this.downloadAndSaveFile("https://music-play.oss-cn-shenzhen.aliyuncs.com/backOss/file/55d2dd22bd554eb19b71536bec4ba42c.bin");
    // _this.downloadAndSaveFile("https://music-play.oss-cn-shenzhen.aliyuncs.com/backOss/file/7498f0c94c5646d0a4648f313a2fa05c.bin");

  },
  // 下载网络文件并保存到本地
  downloadAndSaveFile(url) {
    const fs = wx.getFileSystemManager();
    let _this = this;
    wx.downloadFile({
      url: url, // 网络文件的 URL
      success: (res) => {
        if (res.statusCode === 200) {
          // 下载成功，res.tempFilePath 是临时文件路径
          const tempFilePath = res.tempFilePath;
          console.log("下载文件:", res)
          fs.readFile({
            filePath: tempFilePath,
            // encoding: '', // 不指定编码以获取原始二进制数据
            success: (res) => {
              console.log("下载文件成功:", res.data)
              let rgbData = res.data

              wx.hideLoading();
              wx.showLoading({
                title: '开始传输图片',
              })
              _this.startImage(rgbData);
            },
            fail: (err) => {
              console.error('读取 .bin 文件失败：', err);
            },
          });
        } else {
          console.error('下载文件失败:', res.statusCode);
        }
      },
      fail: (err) => {
        console.error('下载文件失败:', err);
      },
    });
  },
  checkAndRequestImagePermission: function () {
    const _this = this;

    // 检查用户是否已经授权访问相册
    wx.getSetting({
      success(res) {
        if (!res.authSetting['scope.writePhotosAlbum']) {
          // 用户未授权访问相册，请求用户授权
          wx.authorize({
            scope: 'scope.writePhotosAlbum',
            success() {
              // 用户同意授权
              console.log('用户已授权访问相册');
              // 可以在这里执行访问相册的操作
            },
            fail() {
              // 用户拒绝授权
              console.log('用户拒绝授权访问相册');
              wx.showModal({
                title: '提示',
                content: '您拒绝了访问相册的权限，无法上传图片',
                showCancel: false,
                success(res) {
                  if (res.confirm) {
                    // 跳转到设置页面
                    wx.openSetting({
                      success(settingRes) {
                        if (settingRes.authSetting['scope.writePhotosAlbum']) {
                          console.log('用户已在设置中开启访问相册的权限');
                          // 可以在这里执行访问相册的操作
                          _this.upload(); //上传图片
                        } else {
                          console.log('用户仍未授权访问相册');
                        }
                      }
                    });
                  }
                }
              });
            }
          });
        } else {
          // 用户已授权访问相册
          console.log('用户已授权访问相册');
          // 可以在这里执行访问相册的操作
        }
      }
    });
  },
  async startImage(imageBuffer) {
    this.sliceDataIntoChunks(imageBuffer, 16);

    BtHelper.sendCallBack(BtCmd.wallPaper(1), function (res) {
      if (!res) {
        wx.hideLoading()
        wx.showToast({
          title: '发送失败',
          icon: 'none'
        })
      }
    });
  },
  sliceDataIntoChunks(data, chunkSize) {
    console.log("发送图片数据:", data.byteLength)
    const chunks = [];
    // for (let i = 0; i < data.length; i += chunkSize) {
    for (let i = 0; i < data.byteLength; i += chunkSize) {
      const chunk = data.slice(i, i + chunkSize);
      chunks.push(chunk);
    }
    this.data._chunks = chunks;
  },

  async sendImage() {
    let _this = this

    wx.hideLoading()
    let chunks = this.data._chunks
    let next = 0;
    let total = this.data._imageBufferLength;
    let btHelper = BtHelper.getInstance();
    let i = 0;
    this._timer = setInterval(async () => {
      const chunk = chunks[i];
      i++;
      next += chunk.byteLength;
      // next += chunk.length;
      let uint8Array = new Uint8Array(chunk);
      let unit16 = uint8Array.map(item => {
        return item.toString(16)
      });
      console.log("发送图片数据1:", i, next, total, unit16)
      _this.updateProgress(next, total);

      let res = await btHelper.wallPaperSyncData(chunk);
      // let res = true;
      // btHelper.wallPaperData(chunk);

      let nowDate = Date.now()
      if (i === chunks.length - 1 && res) {
        wx.showModal({
          title: '图片上传成功' + i + " / " + nowDate,
          showCancel: false,
          success(res) {
            if (res.confirm) {
              const pages = getCurrentPages();
              // 获取上一级页面实例
              const prevPage = pages[pages.length - 2];
              // 传递参数
              prevPage.setData({
                topImg: {
                  "pic": _this.data._imgUrl,
                }
              });
              wx.navigateBack({
                delta: 1,
              })
            }
          }
        })
        _this.endImage(0)

      } else if (!res) {
        wx.showModal({
          title: '图片上传失败',
          showCancel: false
        })

        _this.endImage(2)
      }
    }, 20);
  },
  async delay(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
  },
  endImage(value) {
    let _this = this
    console.log("结束图片上传:", value)
    if (_this.data._timer) {
      clearInterval(_this.data._timer)
      _this.data._timer = null
    }
    _this.data._chunks = []
    BtHelper.getInstance().wallPaper(value);
    if (value === 0) {

    } else {          // 获取页面栈

    }
  },
  startProgress() {
    this.setData({
      progress: 0,
      showProgress: true
    })
  },
  updateProgress(chunk, total) {
    let progress = parseFloat((chunk / total * 100).toFixed(2));
    let _this = this
    if (chunk >= total) {
      _this.setData({
        progress: 0,
        showProgress: false,
        // showCropImg: false
      });
      wx.showToast({
        title: '图片上传成功',
      })
    } else {
      _this.setData({
        progress: progress,
      });
    }
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    this.checkAndRequestImagePermission()
    this.cropper = this.selectComponent("#image-cropper");
    this.cropper.imgReset();
    // this.setData({
    //   scr:json,
    // })
    this.upload(); //上传图片

    let _this = this;
    EventManager.addNotification(CmdEvent.eventName, function (event) {
      let name = event.cmdEvent;
      console.log("裁剪页：", EnumCmdEvent)

      switch (name) {
        case EnumCmdEvent.wallpaper:
          let otaCmd = event.wallpaper;
          let kind = event.heiJiaoKind;
          console.log("裁剪页：", otaCmd, kind)

          if (otaCmd === 1 && kind == 1) {
            // 开始发送
            _this.sendImage()
            _this.startProgress()
          } else if (otaCmd === 0 && kind == 1) {
            // 发送结束
          } else if (kind == 0) {
            wx.hideLoading()
            wx.showModal({
              title: '图片上传失败了',
              showCancel: false
            })
            if (_this.data._timer) {
              clearInterval(_this.data._timer)
              _this.data._timer = null
            }
          }
          break;
        default:
          break;
      }
    }, this)
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {
    EventManager.removeNotification(CmdEvent.eventName, this);
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh() {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom() {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage() {

  }
})