implement base functionality

capabilities.json

@@ -1,84 +1,73 @@
 {
-    "dataRoles": [
+    "dataRoles": [{
-        {
+        "displayName": "urls",
-            "displayName": "Category Data",
+        "name": "urls",
-            "name": "category",
+        "kind": "Grouping",
-            "kind": "Grouping"
+        "description": "Urls of pictures, example: 'http://www.example.com/xx.png'"
-        },
+    }],
-        {
-            "displayName": "Measure Data",
-            "name": "measure",
-            "kind": "Measure"
-        }
-    ],
     "objects": {
-        "dataPoint": {
+        "layout": {
-            "displayName": "Data colors",
+            "displayName": "layout",
             "properties": {
-                "defaultColor": {
+                "rowsCount": {
-                    "displayName": "Default color",
                     "type": {
-                        "fill": {
+                        "numeric": true
-                            "solid": {
+                    },
-                                "color": true
+                    "displayName": "rowsCount",
+                    "description": "How many rows?"
+                },
+                "rowGap": {
+                    "type": {
+                        "numeric": true
+                    },
+                    "placeHolderText": "{value}%",
+                    "displayName": "rowGap",
+                    "description": "The distance moved during each cycle.(%)"
+                },
+                "columnGap": {
+                    "type": {
+                        "numeric": true
+                    },
+                    "placeHolderText": "msec",
+                    "displayName": "columnGap",
+                    "description": "How long a cycle takes? (msec)"
                 }
+
+            }
+        },
+        "animation": {
+            "displayName": "animation",
+            "properties": {
+                "feet": {
+                    "type": {
+                        "numeric": true
+                    },
+                    "placeHolderText": "{value}%",
+                    "displayName": "feet",
+                    "description": "The distance moved during each cycle.(%)"
+                },
+                "interval": {
+                    "type": {
+                        "numeric": true
+                    },
+                    "placeHolderText": "numeric",
+                    "displayName": "interval",
+                    "description": "How long a cycle takes? (msec)"
+                }
+
             }
         }
     },
-                "showAllDataPoints": {
+    "dataViewMappings": [{
-                    "displayName": "Show all",
-                    "type": {
-                        "bool": true
-                    }
-                },
-                "fill": {
-                    "displayName": "Fill",
-                    "type": {
-                        "fill": {
-                            "solid": {
-                                "color": true
-                            }
-                        }
-                    }
-                },
-                "fillRule": {
-                    "displayName": "Color saturation",
-                    "type": {
-                        "fill": {}
-                    }
-                },
-                 "fontSize": {
-                    "displayName": "Text Size",
-                    "type": {
-                        "formatting": {
-                            "fontSize": true
-                        }
-                    }
-                }
-            }
-        }
-    },
-    "dataViewMappings": [
-        {
         "categorical": {
             "categories": {
                 "for": {
-                        "in": "category"
+                    "in": "urls"
                 },
                 "dataReductionAlgorithm": {
                     "top": {}
                 }
-                },
-                "values": {
-                    "select": [
-                        {
-                            "bind": {
-                                "to": "measure"
             }
         }
-                    ]
+    }]
-                }
-            }
-        }
-    ]
 }

pbiviz.json

@@ -1 +1,25 @@
-{"visual":{"name":"picsScroller","displayName":"picsScroller","guid":"picsScroller4F6E5B21FAB94F2081F33542CFAD9E09","visualClassName":"Visual","version":"1.0.0","description":"","supportUrl":"","gitHubUrl":""},"apiVersion":"2.6.0","author":{"name":"","email":""},"assets":{"icon":"assets/icon.png"},"externalJS":null,"style":"style/visual.less","capabilities":"capabilities.json","dependencies":null,"stringResources":[]}
+{
+    "visual": {
+        "name": "picsScroller",
+        "displayName": "picsScroller",
+        "guid": "picsScroller4F6E5B21FAB94F2081F33542CFAD9E09",
+        "visualClassName": "Visual",
+        "version": "1.0.0",
+        "description": "scroll pictures",
+        "supportUrl": "https://blog.mujiannan.me",
+        "gitHubUrl": "https://www.github.com/mujiannan"
+    },
+    "apiVersion": "2.6.0",
+    "author": {
+        "name": "shennan",
+        "email": "littlesand@Outlook.com"
+    },
+    "assets": {
+        "icon": "assets/icon.png"
+    },
+    "externalJS": [],
+    "style": "style/visual.less",
+    "capabilities": "capabilities.json",
+    "dependencies": null,
+    "stringResources": []
+}

src/css/picsScroller.css

@@ -0,0 +1,31 @@
+div.pics-sroller-inner-container {
+    position: absolute;
+    height: 100%;
+    width: 100%;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+}
+
+div.pics-scroller-row-container {
+    width: 100%;
+    overflow-x: hidden;
+    overflow-y: nowrap;
+    white-space: nowrap;
+    display: flex;
+    flex-direction: row;
+}
+
+div.pics-scroller-img-container {
+    height: 100%;
+    width: auto;
+    display: inline-block;
+}
+
+div.pics-scroll-invisible-img-container {
+    display: none;
+}
+
+img.pics-scroller-img {
+    height: 100%;
+}

src/settings.ts

@@ -30,19 +30,16 @@ import { dataViewObjectsParser } from "powerbi-visuals-utils-dataviewutils";
 import DataViewObjectsParser = dataViewObjectsParser.DataViewObjectsParser;
 
 export class VisualSettings extends DataViewObjectsParser {
-      public dataPoint: dataPointSettings = new dataPointSettings();
+  public animation: AnimationSettings = new AnimationSettings();
+  public layout:LayoutSettings=new LayoutSettings();
 }
 
-    export class dataPointSettings {
+export class AnimationSettings {
-     // Default color
+  public feet:number=1;//n% * width
-      public defaultColor: string = "";
+  public interval:number=20;//ms
-     // Show all
+}
-      public showAllDataPoints: boolean = true;
+export class LayoutSettings{
-     // Fill
+  public rowsCount:number=1;
-      public fill: string = "";
+  public rowGap:number=2;//n% * height
-     // Color saturation
+  public columnGap:number=2;//n% * width
-      public fillRule: string = "";
-     // Text Size
-      public fontSize: number = 12;
 }
-

src/visual.ts

@@ -27,6 +27,7 @@
 
 import "core-js/stable";
 import "./../style/visual.less";
+import "./css/picsScroller.css";
 import powerbi from "powerbi-visuals-api";
 import VisualConstructorOptions = powerbi.extensibility.visual.VisualConstructorOptions;
 import VisualUpdateOptions = powerbi.extensibility.visual.VisualUpdateOptions;
@@ -37,34 +38,130 @@ import DataView = powerbi.DataView;
 import VisualObjectInstanceEnumerationObject = powerbi.VisualObjectInstanceEnumerationObject;
 
 import { VisualSettings } from "./settings";
+import { timeout } from "d3";
+
+
+export interface IPicsScrollerData {
+    urls: string[];
+}
 export class Visual implements IVisual {
-    private target: HTMLElement;
+    private container: HTMLElement;
-    private updateCount: number;
     private settings: VisualSettings;
-    private textNode: Text;
+    private innerContainer!: HTMLDivElement;
-
+    private animationPlaying: boolean = true;//控制动画暂停
     constructor(options: VisualConstructorOptions) {
-        console.log('Visual constructor', options);
+        this.container = options.element;
-        this.target = options.element;
-        this.updateCount = 0;
-        if (document) {
-            const new_p: HTMLElement = document.createElement("p");
-            new_p.appendChild(document.createTextNode("Update count:"));
-            const new_em: HTMLElement = document.createElement("em");
-            this.textNode = document.createTextNode(this.updateCount.toString());
-            new_em.appendChild(this.textNode);
-            new_p.appendChild(new_em);
-            this.target.appendChild(new_p);
     }
+    private initial() {
+        if (this.innerContainer) {
+            this.innerContainer.remove();
+        };
+        this.innerContainer = document.createElement("div");
+        this.innerContainer.className = "pics-sroller-inner-container";
+        this.container.appendChild(this.innerContainer);
     }
-
     public update(options: VisualUpdateOptions) {
         this.settings = Visual.parseSettings(options && options.dataViews && options.dataViews[0]);
-        console.log('Visual update', options);
+        this.initial();
-        if (this.textNode) {
+
-            this.textNode.textContent = (this.updateCount++).toString();
+        let data: IPicsScrollerData = { urls: <string[]>options.dataViews[0].categorical.categories[0].values };
+        let feet = options.viewport.width / 100 * this.settings.animation.feet;
+        let interval = this.settings.animation.interval;
+        let rowGap = options.viewport.height / 100 * this.settings.layout.rowGap;
+        let columnGap = options.viewport.width / 100 * this.settings.layout.columnGap;
+        let rowsCount=this.settings.layout.rowsCount;
+        //处理输入
+        if (!(data.urls.length > 0) || !(rowsCount! > 0)) {
+            console.info("picsScroller error: (source_url.length,rowsCount) ", data.urls.length + "_" + rowsCount);
+            return;
+        };
+        if (rowsCount > data.urls.length) {
+            rowsCount = data.urls.length;
+        };
+        let brandsCount = data.urls.length;
+        let unitsCountPerRow = Math.floor(brandsCount / rowsCount);
+        let logoUrlsArr: string[][] = [];
+
+        //转换url列表形态
+        for (let i = 0; i < rowsCount; i++) {
+            logoUrlsArr.push(data.urls.slice(i * unitsCountPerRow, Math.min((i + 1) * unitsCountPerRow, data.urls.length)));
+        };
+        //分成rowsCount行
+        for (let rowNum = 0; rowNum < rowsCount; rowNum++) {
+            let rowContainer = document.createElement('div');
+            this.innerContainer.appendChild(rowContainer);
+            rowContainer.classList.add('pics-scroller-row-container');
+            if (rowNum > 0) {
+                rowContainer.style.marginTop = rowGap + "px";
+            };
+            rowContainer.setAttribute('id', 'pics-scroller-row-container' + rowNum);
+            rowContainer.setAttribute("style", "height:" + 100 / rowsCount + "%;");
+            rowContainer.setAttribute("data-animation-playing", 'false');
+            rowContainer.setAttribute("data-display-placehold", "false");
+
+            //双倍图片容器，第一组用来显示，第二组放上去暂时隐藏
+            //如果第一组发生了溢出，就显示出第二组并应用滚动动画
+            for (let i = 0; i < 2; i++) {
+                for (let j = 0; j < logoUrlsArr[rowNum].length; j++) {
+                    let logoContainer = document.createElement('div');
+                    logoContainer.className = "pics-scroller-img-container";
+                    if (i == 1) {
+                        logoContainer.classList.add("pics-scroll-invisible-img-container");
+                    };
+                    let logo = document.createElement('img');
+                    logo.style.margin = "0px " + columnGap / 2 + "px";
+                    logo.setAttribute("class", "pics-scroller-img");
+                    logo.setAttribute("src", logoUrlsArr[rowNum][j]);
+                    logoContainer.appendChild(logo);
+                    rowContainer.appendChild(logoContainer);
+                };
+            }
+
+            //重新激活动画
+            if (this.animationPlaying) {
+                this.activateAnimation();
+            }
+            //假无限滚动
+            window.setInterval(this.scrollLeftInfinity, interval, rowContainer, feet);
+        };
+
+    }
+    public activateAnimation() {
+        this.animationPlaying = true;
+        let rowContainers = this.innerContainer.getElementsByClassName("pics-scroller-row-container");
+        for (let i = 0; i < rowContainers.length; i++) {
+            rowContainers[i].setAttribute("data-animation-playing", "true");
         }
     }
+    private suspendAnimation() {
+        let rowContainers = this.innerContainer.getElementsByClassName("pics-scroller-row-container");
+        for (let i = 0; i < rowContainers.length; i++) {
+            rowContainers[i].setAttribute("data-animation-playing", "false");
+        }
+    }
+    //定义无限向左滚动函数
+    private scrollLeftInfinity(obj: HTMLDivElement, feet: number) {
+        let playAnimation = <string>obj.getAttribute("data-animation-playing");
+        let displayPlaceHold = <string>obj.getAttribute("data-display-placehold");
+        if (playAnimation == "false") {
+            return;
+        } else if (playAnimation == "true" && displayPlaceHold == "false" && obj.scrollWidth > obj.clientWidth) {
+            let invisibleImgContainers = obj.getElementsByClassName("pics-scroll-invisible-img-container");
+            while (invisibleImgContainers.length > 0) {
+                invisibleImgContainers[0].classList.remove("pics-scroll-invisible-img-container");
+            }
+            obj.setAttribute("data-display-placehold", "true");
+        }
+        if (obj.scrollWidth > obj.clientWidth) {
+            if (obj.scrollLeft >= obj.scrollWidth / 2) {
+                obj.scrollLeft = 0;
+            } else {
+                obj.scrollLeft += feet;
+            };
+        }
+
+    }
+
 
     private static parseSettings(dataView: DataView): VisualSettings {
         return <VisualSettings>VisualSettings.parse(dataView);