Angular Responsive HTML Annotations Example

1import {
2    HtmlCustomAnnotation,
3    CategoryAxis,
4    EAnnotationLayer,
5    ECoordinateMode,
6    EHorizontalAnchorPoint,
7    EVerticalAnchorPoint,
8    EXyDirection,
9    MouseWheelZoomModifier,
10    NumberRange,
11    NumericAxis,
12    SciChartSurface,
13    ZoomPanModifier,
14    SmartDateLabelProvider,
15    AnnotationHoverModifier,
16    HtmlTextAnnotation,
17    AnnotationBase,
18    easing,
19    EHoverMode,
20    GenericAnimation,
21    translateFromCanvasToSeriesViewRect,
22    translateToNotScaled,
23    IAnnotation,
24} from "scichart";
25
26import "./styles.css";
27import { appTheme } from "../../../theme";
28
29const data1 = [
30    {
31        start: 1745830800,
32        end: 1745834400,
33        title: "Standup Meeting",
34        color: "#FF6B6B",
35    },
36    {
37        start: 1745834400,
38        end: 1745838900,
39        title: "Planning Session",
40        color: "#4ECDC4",
41    },
42    {
43        start: 1745838900,
44        end: 1745842500,
45        title: "Lunch Break",
46        color: "#FFD93D",
47    },
48    {
49        start: 1745842500,
50        end: 1745847900,
51        title: "Presentation Prep",
52        color: "#1A535C",
53    },
54    {
55        start: 1745847900,
56        end: 1745851500,
57        title: "One-on-One Meeting",
58        color: "#FF9F1C",
59    },
60    {
61        start: 1745851500,
62        end: 1745855100,
63        title: "Email Responses",
64        color: "#6A4C93",
65    },
66];
67
68const data2 = [
69    {
70        start: 1745830800,
71        end: 1745832600,
72        title: "Morning Sync",
73        color: "#FFB5E8",
74    },
75    {
76        start: 1745832600,
77        end: 1745836200,
78        title: "Design Review",
79        color: "#B5EAD7",
80    },
81    {
82        start: 1745836200,
83        end: 1745839800,
84        title: "Code Implementation",
85        color: "#C7CEEA",
86    },
87    {
88        start: 1745839800,
89        end: 1745843400,
90        title: "Lunch + Walk",
91        color: "#FFDAC1",
92    },
93    {
94        start: 1745843400,
95        end: 1745848800,
96        title: "Dev Handoff",
97        color: "#E2F0CB",
98    },
99    {
100        start: 1745848800,
101        end: 1745855100,
102        title: "Documentation",
103        color: "#FFABAB",
104    },
105];
106
107const data3 = [
108    {
109        start: 1745830800,
110        end: 1745833500,
111        title: "Daily Briefing",
112        color: "#FFD6A5",
113    },
114    {
115        start: 1745833500,
116        end: 1745838000,
117        title: "UX Interviews",
118        color: "#9BF6FF",
119    },
120    {
121        start: 1745838000,
122        end: 1745842500,
123        title: "Lunch & Networking",
124        color: "#A0C4FF",
125    },
126    {
127        start: 1745842500,
128        end: 1745846100,
129        title: "Sprint Planning",
130        color: "#BDB2FF",
131    },
132    {
133        start: 1745846100,
134        end: 1745849700,
135        title: "Code Review",
136        color: "#FFC6FF",
137    },
138    {
139        start: 1745849700,
140        end: 1745855100,
141        title: "Backlog Grooming",
142        color: "#FFFFD1",
143    },
144];
145
146const data4 = [
147    {
148        start: 1745830800,
149        end: 1745834100,
150        title: "System Check-In",
151        color: "#FFADAD",
152    },
153    {
154        start: 1745834100,
155        end: 1745837700,
156        title: "Architecture Planning",
157        color: "#FFD6A5",
158    },
159    {
160        start: 1745837700,
161        end: 1745842200,
162        title: "Lunch Break",
163        color: "#FDFFB6",
164    },
165    {
166        start: 1745842200,
167        end: 1745846700,
168        title: "Testing Session",
169        color: "#CAFFBF",
170    },
171    {
172        start: 1745846700,
173        end: 1745851200,
174        title: "QA Sync",
175        color: "#9BF6FF",
176    },
177    {
178        start: 1745851200,
179        end: 1745855100,
180        title: "End-of-Day Recap",
181        color: "#A0C4FF",
182    },
183];
184
185export const drawExample = async (rootElement: string | HTMLDivElement) => {
186    const { sciChartSurface, wasmContext } = await SciChartSurface.create(rootElement);
187    const xAxis = new CategoryAxis(wasmContext, {
188        isInnerAxis: true,
189        labelStyle: {
190            color: "black",
191            fontSize: 12,
192        },
193        majorGridLineStyle: {
194            color: "gray",
195            strokeDashArray: [2, 2],
196        },
197        drawMinorGridLines: false,
198        drawMajorBands: false,
199        labelProvider: new SmartDateLabelProvider({ rotation: -90 }),
200        visibleRangeLimit: new NumberRange(data1[0].start - 4 * 24 * 60, data1[data1.length - 1].end + 4 * 24 * 60),
201        visibleRange: new NumberRange(data1[0].start, data1[data1.length - 1].end),
202    });
203    const yAxis = new NumericAxis(wasmContext, { isVisible: false });
204
205    sciChartSurface.xAxes.add(xAxis);
206    sciChartSurface.yAxes.add(yAxis);
207
208    sciChartSurface.chartModifiers.add(
209        new ZoomPanModifier({ xyDirection: EXyDirection.XDirection }),
210        new MouseWheelZoomModifier({ xyDirection: EXyDirection.XDirection })
211    );
212
213    const crateTimeSlotAnnotation =
214        (offset: number) =>
215        ({ start, end, title, color }: any) => {
216            const textAnnotation = new HtmlCustomAnnotation({
217                // move to the background to allow drawing grid lines and labels above the annotations
218                annotationLayer: EAnnotationLayer.Background,
219                yCoordinateMode: ECoordinateMode.Relative,
220                x1: start,
221                y1: offset * 0.25,
222                x2: end,
223                y2: (offset + 1) * 0.25,
224                horizontalAnchorPoint: EHorizontalAnchorPoint.Center,
225                verticalAnchorPoint: EVerticalAnchorPoint.Center,
226            });
227
228            textAnnotation.htmlElement.innerHTML = `<div class="responsiveTextAnnotation">${title}</div>`;
229            textAnnotation.htmlElement.classList.add("responsiveTextAnnotationContainer");
230            textAnnotation.htmlElement.style.background = color;
231            return textAnnotation;
232        };
233
234    const annotations1 = data1.map(crateTimeSlotAnnotation(0));
235    const annotations2 = data2.map(crateTimeSlotAnnotation(1));
236    const annotations3 = data3.map(crateTimeSlotAnnotation(2));
237    const annotations4 = data4.map(crateTimeSlotAnnotation(3));
238
239    const titleAnnotation1 = addLaneTitleAnnotation("Employee1", "#FFB6C1", 0);
240    const titleAnnotation2 = addLaneTitleAnnotation("Employee2", "#40E0D0", 0.25);
241    const titleAnnotation3 = addLaneTitleAnnotation("Employee3", "#6A5ACD", 0.5);
242    const titleAnnotation4 = addLaneTitleAnnotation("Employee4", "#ADFF2F", 0.75);
243
244    sciChartSurface.annotations.add(
245        ...annotations1,
246        ...annotations2,
247        ...annotations3,
248        ...annotations4,
249        titleAnnotation1,
250        titleAnnotation2,
251        titleAnnotation3,
252        titleAnnotation4
253    );
254
255    addTooltipForAnnotations(sciChartSurface, [...annotations1, ...annotations2, ...annotations3, ...annotations4]);
256
257    return { sciChartSurface };
258};
259
260function addLaneTitleAnnotation(text: string, background: string, yOffset: number) {
261    return new HtmlTextAnnotation({
262        x1: 0,
263        y1: yOffset,
264        xCoordinateMode: ECoordinateMode.Relative,
265        yCoordinateMode: ECoordinateMode.Relative,
266        horizontalAnchorPoint: EHorizontalAnchorPoint.Left,
267        verticalAnchorPoint: EVerticalAnchorPoint.Top,
268        textContainerStyle: {
269            fontSize: "10px",
270            color: "black",
271            opacity: "0.7",
272            background,
273        },
274        text,
275    });
276}
277
278function addTooltipForAnnotations(sciChartSurface: SciChartSurface, targets: IAnnotation[]) {
279    const tooltipAnnotation = new HtmlTextAnnotation({
280        x1: 0,
281        y1: 0,
282        xCoordShift: 20,
283        yCoordShift: 20,
284        xCoordinateMode: ECoordinateMode.Pixel,
285        yCoordinateMode: ECoordinateMode.Pixel,
286        horizontalAnchorPoint: EHorizontalAnchorPoint.Left,
287        verticalAnchorPoint: EVerticalAnchorPoint.Top,
288        textContainerStyle: {
289            fontSize: "12px",
290            color: appTheme.ForegroundColor,
291            padding: "4px",
292            background: "rgba(0, 0, 139, 0.4)",
293            backdropFilter: "blur(10px)",
294            borderRadius: "0px 15px 15px 15px",
295        },
296        text: "",
297        isHidden: true,
298    });
299
300    sciChartSurface.modifierAnnotations.add(tooltipAnnotation);
301
302    let currentTooltipAnimation: GenericAnimation<number>;
303    const animateTooltip = () => {
304        currentTooltipAnimation?.cancel();
305        tooltipAnnotation.isHidden = true;
306        currentTooltipAnimation = new GenericAnimation<number>({
307            from: 0,
308            to: 1,
309            duration: 0,
310            delay: 500,
311            ease: easing.linear,
312            onAnimate: (from: number, to: number, progress) => {},
313            onCompleted: () => {
314                tooltipAnnotation.isHidden = false;
315            },
316        });
317        sciChartSurface.addAnimation(currentTooltipAnimation);
318    };
319
320    const annotationHoverModifier = new AnnotationHoverModifier({
321        // check hover on provided annotations
322        targets,
323        // ignore tooltip annotation if it is overlapping with other
324        hoverMode: EHoverMode.TopmostIncluded,
325        // needed to update tooltip position when moving the cursor within an annotation
326        notifyPositionUpdate: true,
327        // manage tooltip visibility and position
328        onHover: (args) => {
329            const [hoveredAnnotation] = args.hoveredEntities as AnnotationBase[];
330            if (hoveredAnnotation) {
331                if (hoveredAnnotation.isEditable) {
332                    sciChartSurface.domChartRoot.style.cursor = "grab";
333                }
334                if (hoveredAnnotation.isDraggingStarted) {
335                    tooltipAnnotation.isHidden = true;
336                    return;
337                }
338
339                const borders = tooltipAnnotation.getAnnotationBorders(true);
340                tooltipAnnotation.text = `${formatTime(hoveredAnnotation.x1)} - ${formatTime(hoveredAnnotation.x2)}`;
341
342                const handleAnnotationsOutsideSeriesViewRect = true;
343                const translatedMousePoint = translateFromCanvasToSeriesViewRect(
344                    args.mouseArgs.mousePoint,
345                    sciChartSurface.seriesViewRect,
346                    handleAnnotationsOutsideSeriesViewRect
347                );
348                tooltipAnnotation.x1 = translateToNotScaled(translatedMousePoint.x);
349                tooltipAnnotation.y1 = translateToNotScaled(translatedMousePoint.y);
350
351                // initial default offset from pointer
352                tooltipAnnotation.xCoordShift = 20;
353                const width = Math.abs(borders.x2 - borders.x1);
354                const expectedX2Coordinate = tooltipAnnotation.x1 + tooltipAnnotation.xCoordShift + width;
355                const unscaledViewWidth = translateToNotScaled(sciChartSurface.seriesViewRect.width);
356                if (expectedX2Coordinate > unscaledViewWidth) {
357                    tooltipAnnotation.xCoordShift = unscaledViewWidth - width - tooltipAnnotation.x1;
358                }
359
360                animateTooltip();
361            } else {
362                sciChartSurface.domChartRoot.style.cursor = "auto";
363                tooltipAnnotation.isHidden = true;
364                currentTooltipAnimation?.cancel();
365            }
366        },
367    });
368
369    sciChartSurface.chartModifiers.add(annotationHoverModifier);
370}
371
372function formatTime(timestamp: number) {
373    const date = new Date(timestamp * 1000);
374    const hours = date.getHours().toString().padStart(2, "0");
375    const minutes = date.getMinutes().toString().padStart(2, "0");
376    return `${hours}:${minutes}`;
377}
378