[new feature] add image component

packages/image/index.js

@@ -0,0 +1,81 @@
+import { use, isDef, suffixPx } from '../utils';
+
+const [sfc, bem] = use('image');
+
+export default sfc({
+  props: {
+    src: String,
+    fit: String,
+    alt: String,
+    lazyLoad: Boolean,
+    width: [String, Number],
+    height: [String, Number]
+  },
+
+  data() {
+    return {
+      loading: true,
+      error: false
+    };
+  },
+
+  computed: {
+    style() {
+      const style = {};
+
+      if (isDef(this.width)) {
+        style.width = suffixPx(this.width);
+      }
+
+      if (isDef(this.height)) {
+        style.height = suffixPx(this.height);
+      }
+
+      return style;
+    }
+  },
+
+  methods: {
+    onLoad(event) {
+      this.loading = false;
+      this.$emit('load', event);
+    },
+
+    onError(event) {
+      this.error = true;
+      this.$emit('error', event);
+    },
+
+    onClick(event) {
+      this.$emit('click', event);
+    }
+  },
+
+  render(h) {
+    const imgData = {
+      class: bem('img'),
+      attrs: {
+        alt: this.alt
+      },
+      style: {
+        objectFit: this.fit
+      },
+      on: {
+        load: this.onLoad,
+        error: this.onError
+      }
+    };
+
+    const Image = this.lazyLoad ? (
+      <img vLazy={this.src} {...imgData} />
+    ) : (
+      <img src={this.src} {...imgData} />
+    );
+
+    return (
+      <div class={bem()} style={this.style} onClick={this.onClick}>
+        {Image}
+      </div>
+    );
+  }
+});