index.js 4.7 KB

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  1. import {
  2. getSelfRead
  3. } from '~/api/user'
  4. let videoContext = null
  5. Page({
  6. /**
  7. * 页面的初始数据
  8. */
  9. data: {
  10. list: null,
  11. currentId: '',
  12. videoState: true,
  13. canvasHidden: false, //设置画板的显示与隐藏
  14. shareImgPath: '' //用于储存canvas生成的图片
  15. },
  16. onLoad(options) {
  17. this.getSelfRead()
  18. },
  19. // 打开评论
  20. openComment({
  21. target
  22. }) {
  23. this.selectComponent("#comment").open(target.dataset.id)
  24. },
  25. //获取自己作品列表
  26. async getSelfRead() {
  27. let list = await getSelfRead()
  28. this.setData({
  29. list
  30. })
  31. },
  32. creatShare(video) {
  33. return new Promise((resolve, reject) => {
  34. let context = wx.createSelectorQuery();
  35. context
  36. .select('#share')
  37. .fields({
  38. node: true,
  39. size: true
  40. }).exec((res) => {
  41. const canvas = res[0].node;
  42. const ctx = canvas.getContext('2d');
  43. const dpr = wx.getSystemInfoSync().pixelRatio;
  44. canvas.width = res[0].width * dpr;
  45. canvas.height = res[0].height * dpr;
  46. ctx.scale(dpr, dpr);
  47. ctx.font = '14px PingFang';
  48. let pic = canvas.createImage();
  49. pic.src = video.userRead.coverImg; //可以是本地,也可以是网络图片
  50. pic.onload = () => {
  51. ctx.drawImage(pic, 0, 0, 375, 211);
  52. }
  53. let peiyin = canvas.createImage();
  54. peiyin.src = '/static/peiyin.jpg';
  55. peiyin.onload = () => {
  56. ctx.drawImage(peiyin, 0, 211, 375, 89);
  57. // 收藏,一个一个渲染
  58. let sc = canvas.createImage();
  59. sc.src = '/static/star.png'
  60. sc.onload = () => {
  61. ctx.drawImage(sc, 12, 220, 20, 20)
  62. ctx.fillText('收藏', 36, 238)
  63. //分享
  64. let fx = canvas.createImage();
  65. fx.src = '/static/share.png'
  66. fx.onload = () => {
  67. ctx.drawImage(fx, 78, 220, 22, 22)
  68. ctx.fillText('分享', 104, 238)
  69. //点赞
  70. let dz = canvas.createImage();
  71. dz.src = video.isLike ? '/static/heart_colored.png' : '/static/heart.png'
  72. dz.onload = () => {
  73. ctx.drawImage(dz, 258, 222, 22, 22)
  74. ctx.fillText(video.userRead.likeAmount, 284, 238)
  75. //评论
  76. let pl = canvas.createImage();
  77. pl.src = '/static/comment.png'
  78. pl.onload = () => {
  79. ctx.drawImage(pl, 318, 222, 22, 22)
  80. ctx.fillText(video.userRead.commentAmount, 340, 238)
  81. setTimeout(() => {
  82. wx.canvasToTempFilePath({
  83. canvas: canvas,
  84. success(res) {
  85. resolve({
  86. title: '请欣赏我的课文朗读作品,点赞+评论。',
  87. path: `/pages/index/index?readId=${video.userRead.id}&uid=${wx.getStorageSync('uid')}`,
  88. imageUrl: res.tempFilePath
  89. })
  90. },
  91. fail(res) {
  92. reject()
  93. }
  94. }, this)
  95. }, 500)
  96. }
  97. }
  98. }
  99. }
  100. }
  101. })
  102. })
  103. },
  104. // 改变视频状态
  105. changStatus({
  106. detail
  107. }) {
  108. this.setData(detail)
  109. },
  110. // 开始播放
  111. playVideo({
  112. currentTarget
  113. }) {
  114. this.setData({
  115. videoState: true,
  116. currentId: currentTarget.dataset.id
  117. })
  118. },
  119. /* 改变视频播放状态 ,暂时先不用*/
  120. changeVideoState() {
  121. this.videoContext = wx.createVideoContext('myVideo')
  122. let videoState = this.data.videoState
  123. if (videoState) {
  124. this.videoContext.pause()
  125. } else {
  126. this.videoContext.play()
  127. }
  128. this.setData({
  129. videoState: !videoState
  130. })
  131. },
  132. onShareAppMessage({
  133. from,
  134. target
  135. }) {
  136. if (from == 'button') {
  137. let video = target.dataset.info
  138. const promise = new Promise(resolve => {
  139. this.creatShare(video).then(res => {
  140. resolve(res)
  141. })
  142. })
  143. console.log(video);
  144. return {
  145. title: '请欣赏我的课文朗读作品,点赞+评论。',
  146. path: `/pages/index/index?readId=${video.userRead.id}&uid=${wx.getStorageSync('uid')}`,
  147. imageUrl: video.userRead.coverImg,
  148. promise
  149. }
  150. } else {
  151. return {
  152. title: '课文朗读,从未如此有趣。',
  153. path: `/pages/index/index?&uid=${wx.getStorageSync('uid')}`,
  154. imageUrl: 'http://reader-wx.ai160.com/images/reader/v3/shareContent.png'
  155. }
  156. }
  157. }
  158. })