daliangzao/customized/pages/oneMade/oneComb/oneComb.js

// customized/pages/made/combination/combination.js
import * as util from '../../../../utils/util.js'
let app = getApp();
let host = app.globalData.servsers; // 请求的url
Page({

  /**
   * 页面的初始数据
   */
  data: {
    dataPositionObj: { //正面数据
      top: 184,
      left: 305,
      width: 218,
      height: 218,
    },
    imgTouch: {
      isActive: "1",
      src: "https://dlz.info666.com//temp/d945bfb0-5cc6-406d-a814-cf63b099041f.jpg",
      x: -82,
      y: 17,
      clientX: 195,
      clientY: 121,
      width: 517,
      height: 208.17866666666666,
      scale: 2.4834437086092715,
      angle: 27
    },
    fontTouch: {
      isActive: "1",
      fontContent: "Gg",
      isColor: "#ffffff",
      x: 10,
      y: 10,
      angle: 0,
      fontSize: 100,
      clientX: 0,
      clientY: 0,
      width: 138.34375,
      height: 132
    },
    isActive:null,
    rpx: 1,
    obverseImgObject: {}, //素材背景
    imgSrcArray: [],
    buildSrcArray: [],
    customGoodsImg: "",

  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    if ('id' in options){
      this.setData({
        isActive: options.id,//素材id
        obverseImgObject: util.changeImg,//素材
        dataPositionObj: util.changeCup(options.id.toString()).dataPositionObj
      })
    }
  },

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

    wx.showLoading({
      title: '图片合成中...'
    })
    let that = this,
      result = true;

    if (wx.getStorageSync('madeImgData' + that.data.isActive) || wx.getStorageSync('madeFontData'+ that.data.isActive)) {
      that.getCombImg(that, that.data.isActive);
      result = false
    }

    if (result) {
      wx.hideLoading();
    }
  },

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

  },

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

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },

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

  },

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

  },

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

  },
  getCombImg(that, i) {
    let imgTouch = null,
      dataPositionObj = that.data.dataPositionObj;
    that.setData({ // imgSrcArray 初始化
      imgSrcArray: [],
    })
    if (wx.getStorageSync('madeImgData' + i)) {
      imgTouch = wx.getStorageSync('madeImgData' + i);
      wx.getSystemInfo({
        success: function (res) {
          let rpx = res.windowWidth / 750;
          that.setData({
            rpx: rpx
          });
          wx.downloadFile({
            url: imgTouch.src, // 仅为示例，并非真实的资源
            success(res) {
              // 只要服务器有响应数据，就会把响应内容写入文件并进入 success 回调，业务需要自行判断是否下载到了想要的内容
              console.log(res)
              if (res.statusCode === 200) {
                // canvas截图区域与图片的宽度比例
                let dWidth = dataPositionObj.width / imgTouch.width;
                // canvas截图区域与图片的高度比例
                let dHeight = dataPositionObj.height / imgTouch.height;
                const ctx = wx.createCanvasContext('comb-img');
                //画布中点坐标转移到图片中心
                let movex = imgTouch.x + imgTouch.width * rpx / 2;
                let movey = imgTouch.y + imgTouch.height * rpx / 2;
                ctx.translate(movex, movey);
                ctx.rotate(imgTouch.angle * Math.PI / 180);
                ctx.drawImage(res.tempFilePath, -imgTouch.width * rpx / 2, -imgTouch.height * rpx / 2, imgTouch.width * rpx, imgTouch.height * rpx)
                ctx.draw(false, function () {
                  wx.canvasToTempFilePath({
                    canvasId: 'comb-img',
                    success: function (res) {
                      console.log(res)
                      let imgArray = that.data.imgSrcArray;
                      imgArray.push(res.tempFilePath)
                      that.setData({
                        imgSrcArray: imgArray
                      })
                      that.getCombFont(that, i, true);
                    }
                  }, that)
                })
              }
            }
          })

        },
      })
    } else {
      that.getCombFont(that, i, false);
    }



  },
  getCombFont(that, i, _static) {
    let fontTouch = null,
      dataPositionObj = that.data.dataPositionObj,
      simulationFont = null;
    if (wx.getStorageSync('madeFontData' + i)) {
      fontTouch = wx.getStorageSync('madeFontData' + i);
      simulationFont = wx.getStorageSync('simulationFont' + i);
      const ctx = wx.createCanvasContext('comb-font');
      // ctx.textBaseline = 'top';
      ctx.setFontSize(fontTouch.fontSize);
      ctx.setFillStyle(fontTouch.isColor);
      if (fontTouch.bold) {
        ctx.fillText(fontTouch.fontContent, -1, simulationFont.height / 5 * 4)
        ctx.fillText(fontTouch.fontContent, 0, simulationFont.height / 5 * 4 - 1)
      }
      ctx.fillText(fontTouch.fontContent, 0, simulationFont.height / 5 * 4)
      if (fontTouch.bold) {
        ctx.fillText(fontTouch.fontContent, 1, simulationFont.height / 5 * 4)
        ctx.fillText(fontTouch.fontContent, 0, simulationFont.height / 5 * 4 + 1)
      }
      ctx.restore()
      ctx.draw(false, function () {
        wx.canvasToTempFilePath({
          canvasId: 'comb-font',
          success: function (res) {
            console.log(res)
            that.getComb(that, that.data.imgSrcArray, i)
          }
        }, that)
      })
    } else {
      that.getComb(that, that.data.imgSrcArray, i)
    }

  },
  getComb(that, imgSrcArray, i) {
    console.log(imgSrcArray, "imgSrcArray")
   
      let imgTouch = wx.getStorageSync('madeImgData' + i);
    let dataPositionObj = that.data.dataPositionObj;
      let canvasBg = that.data.obverseImgObject[i+'_2'];//获取背景没有线框的
      wx.getSystemInfo({
        success: function (res) {
          let rpx = res.windowWidth / 750;
          that.setData({
            rpx: rpx
          });
          const ctx = wx.createCanvasContext('comb-canvas');
          ctx.drawImage(canvasBg, 0, 0, 750 * rpx, 800 * rpx);
          // 设置背景
          ctx.draw(true)
          imgSrcArray.forEach((res) => {
            ctx.drawImage(res, dataPositionObj.left * rpx, dataPositionObj.top * rpx, dataPositionObj.width * rpx, dataPositionObj.height * rpx);
          })
          console.log('开始执行叠加', that.data.obverseImgObject[i + '_1'])
          ctx.drawImage(that.data.obverseImgObject[i + '_1'], 0, 0, 750 * rpx, 800 * rpx)
          
          ctx.draw(true, function () {
            console.log("开始合成")
            wx.canvasToTempFilePath({
              canvasId: 'comb-canvas',
              success: function (res) {
                console.log(res,"合成结果")
                that.uploadFile(res.tempFilePath, that, function (data) {
                  console.log(res, "合成成功");

                  let buildSrcArray = that.data.buildSrcArray;

                  buildSrcArray.push({
                    src: res.tempFilePath,
                    isActive: i,
                  });
                  console.log(buildSrcArray, "buildSrcArray")
                  that.setData({
                    buildSrcArray: buildSrcArray,
                  })
                  console.log(that.data.buildSrcArray, "buildSrcArray")
                  wx.hideLoading()
   
                })

              },
              fail: function (err) {
                console.log(err, "合成失败")
                wx.hideLoading();
              }
            }, that)
          })
        },
      })

  },
  addImgRouter() { // add car
    let that = this;
    console.log(that.data.customGoodsImg, "that.data.customGoodsImg")

    wx.request({
      url: host + '/addShopCar',
      method: 'post',
      header: {
        'content-type': 'application/x-www-form-urlencoded'
      },
      data: {
        customGoodsImg: that.data.customGoodsImg.substring(0, that.data.customGoodsImg.length - 1),
        customGoodsName: '拉杆箱-银灰色',
        customGoodsNum: 1,
        userId: app.globalData.user_id,
        customGoodsId:wx.getStorageSync('detail').id,
      },
      success: function (res) {
        console.log(res, "加入购物车")
        if (res.data === 'success') {
          wx.showModal({
            title: '提示',
            content: '加入购物车成功,是否去购物车结算商品？',

            success: function (res) {
              if (res.confirm) {
                console.log('用户点击确定')
                wx.redirectTo({
                  url: '/customized/pages/car/car',
                })
              } else if (res.cancel) {
                console.log('用户点击取消')
              }
            }
          })
        }
      }
    })
  },
  uploadFile(path, that, cb) {
    let customGoodsImg = that.data.customGoodsImg;
    wx.uploadFile({
      url: host + 'fileUpload',
      filePath: path,
      name: 'file',
      formData: {
        file: path,
        userId: app.globalData.user_id,
        imgStatus: 1, // 表示合成
      },
      success: function (res) {
        console.log(res, "rrrr");
        customGoodsImg += res.data + ',';
        that.setData({
          customGoodsImg: customGoodsImg
        })
        cb(true)
      },
      fail: function (res) {
        cb(false)
      }
    })
  },

})