[improvement] rename packages dir to src (#3659)

src/image/index.js

@@ -0,0 +1,143 @@
+import { createNamespace, isDef, suffixPx } from '../utils';
+import Icon from '../icon';
+
+const [createComponent, bem] = createNamespace('image');
+
+export default createComponent({
+  props: {
+    src: String,
+    fit: String,
+    alt: String,
+    lazyLoad: Boolean,
+    width: [String, Number],
+    height: [String, Number]
+  },
+
+  data() {
+    return {
+      loading: true,
+      error: false
+    };
+  },
+
+  watch: {
+    src() {
+      this.loading = true;
+      this.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;
+    }
+  },
+
+  created() {
+    const { $Lazyload } = this;
+
+    if ($Lazyload) {
+      $Lazyload.$on('loaded', this.onLazyLoaded);
+      $Lazyload.$on('error', this.onLazyLoadError);
+    }
+  },
+
+  beforeDestroy() {
+    const { $Lazyload } = this;
+
+    if ($Lazyload) {
+      $Lazyload.$off('loaded', this.onLazyLoaded);
+      $Lazyload.$off('error', this.onLazyLoadError);
+    }
+  },
+
+  methods: {
+    onLoad(event) {
+      this.loading = false;
+      this.$emit('load', event);
+    },
+
+    onLazyLoaded({ el }) {
+      if (el === this.$refs.image && this.loading) {
+        this.onLoad();
+      }
+    },
+
+    onLazyLoadError({ el }) {
+      if (el === this.$refs.image && !this.error) {
+        this.onError();
+      }
+    },
+
+    onError(event) {
+      this.error = true;
+      this.loading = false;
+      this.$emit('error', event);
+    },
+
+    onClick(event) {
+      this.$emit('click', event);
+    },
+
+    renderPlaceholder() {
+      if (this.loading) {
+        return (
+          <div class={bem('loading')}>
+            {this.slots('loading') || <Icon name="photo-o" size="22" />}
+          </div>
+        );
+      }
+
+      if (this.error) {
+        return (
+          <div class={bem('error')}>
+            {this.slots('error') || <Icon name="warning-o" size="22" />}
+          </div>
+        );
+      }
+    },
+
+    renderImage() {
+      const imgData = {
+        class: bem('img'),
+        attrs: {
+          alt: this.alt
+        },
+        style: {
+          objectFit: this.fit
+        }
+      };
+
+      if (this.error) {
+        return;
+      }
+
+      if (this.lazyLoad) {
+        return <img ref="image" vLazy={this.src} {...imgData} />;
+      }
+
+      return (
+        <img src={this.src} onLoad={this.onLoad} onError={this.onError} {...imgData} />
+      );
+    }
+  },
+
+  render(h) {
+    return (
+      <div class={bem()} style={this.style} onClick={this.onClick}>
+        {this.renderImage()}
+        {this.renderPlaceholder()}
+      </div>
+    );
+  }
+});