完成canvas生成图片下载

src/pages/image-share.vue

@@ -0,0 +1,136 @@
+<script setup>
+import { onMounted } from "vue";
+import Container from "@/components/Container.vue";
+import { renderText, renderRankTitle, renderLine } from "@/util.js";
+
+const saveImage = () => {
+  uni.canvasToTempFilePath({
+    canvasId: "shareCanvas",
+    success: (res) => {
+      const tempFilePath = res.tempFilePath;
+
+      // 保存图片到相册
+      uni.saveImageToPhotosAlbum({
+        filePath: tempFilePath,
+        success: () => {
+          uni.showToast({ title: "保存成功" });
+        },
+        fail: () => {
+          uni.showToast({ title: "保存失败", icon: "error" });
+        },
+      });
+    },
+  });
+};
+
+onMounted(() => {
+  var ctx = uni.createCanvasContext("shareCanvas");
+  const width = 302;
+  const height = 535;
+  ctx.drawImage("../static/share-bg.png", 0, 0, 302, 534);
+  ctx.drawImage("../static/avatar.png", 20, 20, 35, 35);
+  ctx.drawImage("../static/avatar-frame.png", 15, 15, 45, 45);
+  renderText(ctx, "用户名称", 14, "#fff", 70, 35);
+  renderRankTitle(ctx, "钻石1级");
+  ctx.drawImage(
+    "../static/first-try-title.png",
+    (width - 200) / 2,
+    155,
+    200,
+    53
+  );
+  renderText(ctx, "正式开启弓箭手之路", 22, "#fff", 53, 230);
+  renderText(ctx, "共", 16, "#fff", 124, 300);
+  renderText(ctx, "50", 16, "#fed847", 144, 300);
+  renderText(ctx, "环", 16, "#fff", 166, 300);
+  renderLine(ctx, 80);
+  renderLine(ctx, 192);
+  for (let i = 0; i < 6; i++) {
+    ctx.drawImage("../static/score-bg.png", 16 + i * 46, 320, 40, 40);
+    renderText(ctx, "9", 25, "#fed847", 29 + i * 46, 349);
+  }
+  for (let i = 0; i < 6; i++) {
+    ctx.drawImage("../static/score-bg.png", 16 + i * 46, 366, 40, 40);
+    renderText(ctx, "9", 25, "#fed847", 29 + i * 46, 395);
+  }
+  ctx.drawImage(
+    "../static/device-icon.png",
+    width * 0.06,
+    height * 0.87,
+    55,
+    55
+  );
+  renderText(ctx, "射灵平台", 16, "#fff", width * 0.28, height * 0.9);
+  renderText(
+    ctx,
+    "快加入我们一起玩吧~",
+    11,
+    "rgba(255, 255, 255, 0.5)",
+    width * 0.28,
+    height * 0.93
+  );
+  renderText(
+    ctx,
+    "后羿就是这样练成的",
+    11,
+    "rgba(255, 255, 255, 0.5)",
+    width * 0.28,
+    height * 0.96
+  );
+  ctx.drawImage("../static/qr-code.png", width * 0.75, height * 0.86, 60, 60);
+  ctx.draw();
+});
+</script>
+
+<template>
+  <Container>
+    <view class="content">
+      <canvas
+        style="width: 302px; height: 534px"
+        canvas-id="shareCanvas"
+        id="firstCanvas"
+      ></canvas>
+      <view class="footer">
+        <view>
+          <image src="../static/wechat-outline.png" mode="widthFix" />
+          <text>微信好友</text>
+        </view>
+        <view>
+          <image src="../static/wechat-moment.png" mode="widthFix" />
+          <text>朋友圈</text>
+        </view>
+        <view @click="saveImage">
+          <image src="../static/download.png" mode="widthFix" />
+          <text>保存到相册</text>
+        </view>
+      </view>
+    </view>
+  </Container>
+</template>
+
+<style scoped>
+.content {
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding-top: 20px;
+}
+.footer {
+  width: 100%;
+  display: flex;
+  justify-content: space-around;
+  margin-top: 50px;
+}
+.footer > view {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  color: #fff;
+  font-size: 12px;
+}
+.footer > view > image {
+  width: 45px;
+  margin-bottom: 10px;
+}
+</style>