From 868b8e72066f3f356c0dee78636058d66c1b6056 Mon Sep 17 00:00:00 2001
From: kuaifan <aipaw@live.cn>
Date: Thu, 17 Mar 2022 10:53:30 +0800
Subject: [PATCH] =?UTF-8?q?perf:=20=E4=BC=98=E5=8C=96=E5=9B=BE=E7=89=87?=
 =?UTF-8?q?=E9=A2=84=E8=A7=88=EF=BC=8C=E4=BC=98=E5=8C=96=E4=B8=8E=E5=BC=B9?=
 =?UTF-8?q?=E7=AA=97esc=E6=8C=89=E9=94=AE=E5=86=B2=E7=AA=81=E7=9A=84?=
 =?UTF-8?q?=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 resources/assets/js/App.vue                   |   4 +-
 resources/assets/js/app.js                    |   2 -
 .../js/components/PreviewImage/index.vue      |  85 ++++
 .../js/components/PreviewImage/view.vue       | 363 ++++++++++++++++++
 resources/assets/js/pages/manage.vue          |  15 -
 resources/assets/sass/element.scss            |   1 -
 6 files changed, 451 insertions(+), 19 deletions(-)
 create mode 100644 resources/assets/js/components/PreviewImage/index.vue
 create mode 100644 resources/assets/js/components/PreviewImage/view.vue

diff --git a/resources/assets/js/App.vue b/resources/assets/js/App.vue
index d6d315d7f..cd8d48d68 100755
--- a/resources/assets/js/App.vue
+++ b/resources/assets/js/App.vue
@@ -7,16 +7,18 @@
         </transition>
         <Spinner/>
         <RightBottom/>
+        <PreviewImage/>
     </div>
 </template>
 
 <script>
 import Spinner from "./components/Spinner";
 import RightBottom from "./components/RightBottom";
+import PreviewImage from "./components/PreviewImage";
 import {mapState} from "vuex";
 
 export default {
-    components: {RightBottom, Spinner},
+    components: {PreviewImage, RightBottom, Spinner},
 
     data() {
         return {
diff --git a/resources/assets/js/app.js b/resources/assets/js/app.js
index f8b7c5003..68ce39e35 100644
--- a/resources/assets/js/app.js
+++ b/resources/assets/js/app.js
@@ -45,7 +45,6 @@ import {
     DropdownMenu,
     DropdownItem,
 } from 'element-ui';
-import ImageViewer from 'element-ui/packages/image/src/image-viewer';
 
 Vue.component('EAvatar', Avatar);
 Vue.component('ETooltip', Tooltip);
@@ -53,7 +52,6 @@ Vue.component('EPopover', Popover);
 Vue.component('EDropdown', Dropdown);
 Vue.component('EDropdownMenu', DropdownMenu);
 Vue.component('EDropdownItem', DropdownItem);
-Vue.component('EImageViewer', ImageViewer);
 
 const originalPush = VueRouter.prototype.push
 VueRouter.prototype.push = function push(location) {
diff --git a/resources/assets/js/components/PreviewImage/index.vue b/resources/assets/js/components/PreviewImage/index.vue
new file mode 100644
index 000000000..af078c91d
--- /dev/null
+++ b/resources/assets/js/components/PreviewImage/index.vue
@@ -0,0 +1,85 @@
+<template>
+    <Modal
+        :value="previewImageList.length > 0"
+        :mask-closable="false"
+        :footer-hide="true"
+        :transition-names="['fade', 'fade']"
+        fullscreen
+        @on-visible-change="visibleChange"
+        class-name="common-preview-image">
+        <PreviewImageView v-if="previewImageList.length > 0" :initial-index="previewImageIndex" :url-list="previewImageList" infinite/>
+    </Modal>
+</template>
+
+<style lang="scss">
+body {
+    .ivu-modal-wrap {
+        &.common-preview-image {
+            .ivu-modal {
+                margin: 0;
+                padding: 0;
+                .ivu-modal-content {
+                    background: transparent;
+                    .ivu-modal-close {
+                        display: flex;
+                        align-items: center;
+                        justify-content: center;
+                        border-radius: 50%;
+                        background-color: #606266;
+                        font-size: 24px;
+                        height: 40px;
+                        right: 40px;
+                        top: 40px;
+                        width: 40px;
+                        .ivu-icon-ios-close {
+                            top: 0;
+                            right: 0;
+                            font-size: 40px;
+                            color: #fff;
+                        }
+                    }
+                    .ivu-modal-body {
+                        padding: 0;
+                    }
+                }
+            }
+        }
+    }
+}
+</style>
+
+<script>
+import PreviewImageView from "./view";
+import {mapState} from "vuex";
+
+export default {
+    name: 'PreviewImage',
+    components: {PreviewImageView},
+
+    data() {
+        return {
+
+        }
+    },
+    mounted() {
+
+    },
+    computed: {
+        ...mapState([
+            'previewImageIndex',
+            'previewImageList',
+        ]),
+    },
+    methods: {
+        visibleChange(val) {
+            if (!val) {
+                this.close()
+            }
+        },
+        close() {
+            this.$store.state.previewImageIndex = 0;
+            this.$store.state.previewImageList = [];
+        },
+    }
+};
+</script>
diff --git a/resources/assets/js/components/PreviewImage/view.vue b/resources/assets/js/components/PreviewImage/view.vue
new file mode 100644
index 000000000..1243bbffc
--- /dev/null
+++ b/resources/assets/js/components/PreviewImage/view.vue
@@ -0,0 +1,363 @@
+<template>
+    <div ref="view" class="common-preview-view">
+        <template v-if="!isSingle">
+            <div class="preview-view-prev" :class="{ 'is-disabled': !infinite && isFirst }">
+                <i class="taskfont">&#xe72d;</i>
+            </div>
+            <div class="preview-view-next" :class="{ 'is-disabled': !infinite && isLast }">
+                <i class="taskfont">&#xe733;</i>
+            </div>
+        </template>
+        <div class="preview-view-actions">
+            <div class="actions-inner">
+                <i class="taskfont" @click="handleActions('zoomOut')">&#xe7a2;</i>
+                <i class="taskfont" @click="handleActions('zoomIn')">&#xe79f;</i>
+                <i class="actions-divider"></i>
+                <i class="taskfont" @click="toggleMode" v-html="mode.icon"></i>
+                <i class="actions-divider"></i>
+                <i class="taskfont" @click="handleActions('anticlocelise')">&#xe7a7;</i>
+                <i class="taskfont" @click="handleActions('clocelise')">&#xe7a6;</i>
+            </div>
+        </div>
+        <div class="preview-view-canvas">
+            <img
+                v-for="(url, i) in urlList"
+                v-if="i === index"
+                ref="img"
+                class="preview-view-img"
+                :key="url"
+                :src="currentImg"
+                :style="imgStyle"
+                @load="handleImgLoad"
+                @error="handleImgError"
+                @mousedown="handleMouseDown">
+        </div>
+    </div>
+</template>
+
+<style lang="scss" scoped>
+.common-preview-view {
+    bottom: 0;
+    left: 0;
+    position: fixed;
+    right: 0;
+    top: 0;
+
+    .preview-view-prev,
+    .preview-view-next {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        border-radius: 50%;
+        opacity: .8;
+        cursor: pointer;
+        background-color: #606266;
+        border-color: #fff;
+        height: 44px;
+        width: 44px;
+        position: absolute;
+        top: 50%;
+        z-index: 2;
+        transform: translateY(-50%);
+
+        &.is-disabled {
+            cursor: no-drop;
+
+            > i {
+                opacity: 0.8;
+            }
+        }
+
+        > i {
+            color: #fff;
+            font-size: 24px;
+        }
+    }
+
+    .preview-view-prev {
+        left: 40px;
+    }
+
+    .preview-view-next {
+        right: 40px;
+    }
+
+    .preview-view-actions {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        opacity: .8;
+        background-color: #606266;
+        border-color: #fff;
+        border-radius: 22px;
+        bottom: 30px;
+        height: 44px;
+        position: absolute;
+        left: 50%;
+        z-index: 2;
+        padding: 0 23px;
+        transform: translateX(-50%);
+        width: 282px;
+
+        .actions-inner {
+            align-items: center;
+            color: #fff;
+            cursor: default;
+            display: flex;
+            height: 100%;
+            justify-content: space-around;
+            text-align: justify;
+            width: 100%;
+
+            > i {
+                cursor: pointer;
+                font-size: 23px;
+            }
+        }
+    }
+
+    .preview-view-canvas {
+        align-items: center;
+        display: flex;
+        height: 100%;
+        justify-content: center;
+        width: 100%;
+    }
+}
+</style>
+
+<script>
+import {isFirefox, rafThrottle} from "element-ui/src/utils/util";
+import {off, on} from "element-ui/src/utils/dom";
+
+const Mode = {
+    CONTAIN: {
+        name: 'contain',
+        icon: '&#xe79e;'
+    },
+    ORIGINAL: {
+        name: 'original',
+        icon: '&#xe79d;'
+    }
+};
+const mousewheelEventName = isFirefox() ? 'DOMMouseScroll' : 'mousewheel';
+
+
+export default {
+    props: {
+        urlList: {
+            type: Array,
+            default: () => []
+        },
+        initialIndex: {
+            type: Number,
+            default: 0
+        },
+        infinite: {
+            type: Boolean,
+            default: false
+        },
+        onSwitch: {
+            type: Function,
+            default: () => {
+            }
+        },
+    },
+    data() {
+        return {
+            index: this.initialIndex,
+            loading: false,
+            mode: Mode.CONTAIN,
+            transform: {
+                scale: 1,
+                deg: 0,
+                offsetX: 0,
+                offsetY: 0,
+                enableTransition: false
+            }
+        }
+    },
+    mounted() {
+        this.deviceSupportInstall();
+        this.$refs.view.focus();
+    },
+    beforeDestroy() {
+        this.deviceSupportUninstall();
+    },
+    computed: {
+        isSingle() {
+            return this.urlList.length <= 1;
+        },
+        isFirst() {
+            return this.index === 0;
+        },
+        isLast() {
+            return this.index === this.urlList.length - 1;
+        },
+        currentImg() {
+            return this.urlList[this.index];
+        },
+        imgStyle() {
+            const {scale, deg, offsetX, offsetY, enableTransition} = this.transform;
+            const style = {
+                transform: `scale(${scale}) rotate(${deg}deg)`,
+                transition: enableTransition ? 'transform .3s' : '',
+                'margin-left': `${offsetX}px`,
+                'margin-top': `${offsetY}px`
+            };
+            if (this.mode === Mode.CONTAIN) {
+                style.maxWidth = style.maxHeight = '100%';
+            }
+            return style;
+        },
+    },
+    watch: {
+        index: {
+            handler: function (val) {
+                this.reset();
+                this.onSwitch(val);
+            }
+        },
+        currentImg(val) {
+            this.$nextTick(_ => {
+                const $img = this.$refs.img[0];
+                if (!$img.complete) {
+                    this.loading = true;
+                }
+            });
+        }
+    },
+    methods: {
+        deviceSupportInstall() {
+            this._keyDownHandler = e => {
+                e.stopPropagation();
+                const keyCode = e.keyCode;
+                switch (keyCode) {
+                    // SPACE
+                    case 32:
+                        this.toggleMode();
+                        break;
+                    // LEFT_ARROW
+                    case 37:
+                        this.prev();
+                        break;
+                    // UP_ARROW
+                    case 38:
+                        this.handleActions('zoomIn');
+                        break;
+                    // RIGHT_ARROW
+                    case 39:
+                        this.next();
+                        break;
+                    // DOWN_ARROW
+                    case 40:
+                        this.handleActions('zoomOut');
+                        break;
+                }
+            };
+            this._mouseWheelHandler = rafThrottle(e => {
+                const delta = e.wheelDelta ? e.wheelDelta : -e.detail;
+                if (delta > 0) {
+                    this.handleActions('zoomIn', {
+                        zoomRate: 0.015,
+                        enableTransition: false
+                    });
+                } else {
+                    this.handleActions('zoomOut', {
+                        zoomRate: 0.015,
+                        enableTransition: false
+                    });
+                }
+            });
+            on(document, 'keydown', this._keyDownHandler);
+            on(document, mousewheelEventName, this._mouseWheelHandler);
+        },
+        deviceSupportUninstall() {
+            off(document, 'keydown', this._keyDownHandler);
+            off(document, mousewheelEventName, this._mouseWheelHandler);
+            this._keyDownHandler = null;
+            this._mouseWheelHandler = null;
+        },
+        handleImgLoad(e) {
+            this.loading = false;
+        },
+        handleImgError(e) {
+            this.loading = false;
+            e.target.alt = '加载失败';
+        },
+        handleMouseDown(e) {
+            if (this.loading || e.button !== 0) return;
+
+            const {offsetX, offsetY} = this.transform;
+            const startX = e.pageX;
+            const startY = e.pageY;
+            this._dragHandler = rafThrottle(ev => {
+                this.transform.offsetX = offsetX + ev.pageX - startX;
+                this.transform.offsetY = offsetY + ev.pageY - startY;
+            });
+            on(document, 'mousemove', this._dragHandler);
+            on(document, 'mouseup', ev => {
+                off(document, 'mousemove', this._dragHandler);
+            });
+
+            e.preventDefault();
+        },
+        reset() {
+            this.transform = {
+                scale: 1,
+                deg: 0,
+                offsetX: 0,
+                offsetY: 0,
+                enableTransition: false
+            };
+        },
+        toggleMode() {
+            if (this.loading) return;
+
+            const modeNames = Object.keys(Mode);
+            const modeValues = Object.values(Mode);
+            const index = modeValues.indexOf(this.mode);
+            const nextIndex = (index + 1) % modeNames.length;
+            this.mode = Mode[modeNames[nextIndex]];
+            this.reset();
+        },
+        prev() {
+            if (this.isFirst && !this.infinite) return;
+            const len = this.urlList.length;
+            this.index = (this.index - 1 + len) % len;
+        },
+        next() {
+            if (this.isLast && !this.infinite) return;
+            const len = this.urlList.length;
+            this.index = (this.index + 1) % len;
+        },
+        handleActions(action, options = {}) {
+            if (this.loading) return;
+            const {zoomRate, rotateDeg, enableTransition} = {
+                zoomRate: 0.2,
+                rotateDeg: 90,
+                enableTransition: true,
+                ...options
+            };
+            const {transform} = this;
+            switch (action) {
+                case 'zoomOut':
+                    if (transform.scale > 0.2) {
+                        transform.scale = parseFloat((transform.scale - zoomRate).toFixed(3));
+                    }
+                    break;
+                case 'zoomIn':
+                    transform.scale = parseFloat((transform.scale + zoomRate).toFixed(3));
+                    break;
+                case 'clocelise':
+                    transform.deg += rotateDeg;
+                    break;
+                case 'anticlocelise':
+                    transform.deg -= rotateDeg;
+                    break;
+            }
+            transform.enableTransition = enableTransition;
+        }
+    }
+};
+</script>
diff --git a/resources/assets/js/pages/manage.vue b/resources/assets/js/pages/manage.vue
index c440e1f25..877d58c89 100644
--- a/resources/assets/js/pages/manage.vue
+++ b/resources/assets/js/pages/manage.vue
@@ -342,13 +342,6 @@
                 <Badge :count="unreadTotal"/>
             </div>
         </DragBallComponent>
-
-        <!--预览图片-->
-        <EImageViewer
-            v-if="previewImageList.length > 0"
-            :urlList="previewImageList"
-            :initialIndex="previewImageIndex"
-            :on-close="closePreviewImage"/>
     </div>
 </template>
 
@@ -491,9 +484,6 @@ export default {
 
             'clientNewVersion',
             'cacheTaskBrowse',
-
-            'previewImageList',
-            'previewImageIndex',
         ]),
 
         ...mapGetters(['taskData', 'dashboardTask']),
@@ -980,11 +970,6 @@ export default {
             });
         },
 
-        closePreviewImage() {
-            this.$store.state.previewImageIndex = 0;
-            this.$store.state.previewImageList = [];
-        },
-
         notificationInit() {
             this.notificationClass = new notificationKoro(this.$L("打开通知成功"));
             if (this.notificationClass.support) {
diff --git a/resources/assets/sass/element.scss b/resources/assets/sass/element.scss
index 3e002c916..0df34d3c5 100644
--- a/resources/assets/sass/element.scss
+++ b/resources/assets/sass/element.scss
@@ -14,7 +14,6 @@ $--dropdown-menuItem-hover-color: #606266;
 @import "~element-ui/packages/theme-chalk/src/dropdown-menu";
 @import "~element-ui/packages/theme-chalk/src/dropdown-item";
 @import "~element-ui/packages/theme-chalk/src/notification";
-@import "~element-ui/packages/theme-chalk/src/image";
 
 
 .el-dropdown-menu__item {