bbtimeline-background-canvas.js

@@ -0,0 +1,208 @@
+class BBTimelineBackgroundCanvas extends BBTimelineCanvas {
+  constructor(parentEl, el) {
+    super(parentEl, el);
+
+    const a = this;
+
+    a.Margin = 0;
+    a.StepHeight = 0;
+    a.NoStep = 0;
+
+    a.initialiseComponents();
+  }
+
+  initialiseComponents() {
+    super.initialiseComponents();
+
+    const a = this;
+
+    a.Margin = (a.Parent.Marker.BorderWidth * 2);
+    a.StepHeight = a.Parent.Marker.Width + a.Margin;
+    a.NoStep = Math.floor(a.GraphRectangle.H / a.StepHeight);
+
+    a.Invalidate();
+  }
+
+
+  get GraphRectangle() {
+    const a = this;
+
+    if (a.Parent.XAxis.Position == 'top') {
+      return {
+        X: a.ClientRectangle.X,
+        Y: (a.ClientRectangle.Y + a.XAxisHeight),
+        W: a.ClientRectangle.W,
+        H: (a.ClientRectangle.H - a.XAxisHeight)
+      };
+    } else {
+      return {
+        X: a.ClientRectangle.X,
+        Y: a.ClientRectangle.Y,
+        W: a.ClientRectangle.W,
+        H: (a.ClientRectangle.H - a.XAxisHeight)
+      };
+    }
+  }
+
+  get XAxisHeight() {
+    const a  = this;
+    const labelSize = a.measureText(a.Parent.Axis.Font, "0");
+
+    return labelSize.H + a.Parent.Axis.LabelSpacing + (a.Parent.XAxis.DayLineHeight * 2);
+  }
+
+  get XAxisPositions() {
+    const a = this;
+    const endPosX = (a.GraphRectangle.X + a.GraphRectangle.W);
+
+    let result = [];
+    let x = a.GraphRectangle.X;
+    let date = a.Parent.ConvertToDate(a.Parent.ShowDate);
+
+    // Rollback one day
+    date.setDate(date.getDate() - 1);
+
+    while (true) {
+      if (x >= endPosX) {
+        break;
+      }
+
+      result.push({
+        Date: a.Parent.DateToInternalString(date),
+        X: x
+      });
+
+      x += (a.Parent.XAxis.HourLineSpace * a.Parent.XAxis.NoPartPerDay);
+      date.setDate(date.getDate() + 1);
+    }
+
+    return result;
+  }
+
+
+  Invalidate() {
+    const a = this;
+
+    a.Clear();
+
+    a.drawAxis();
+    a.drawXAxisTicks();
+    a.drawXAxisLabels();
+
+    if (a.Parent.Debug) a.drawRectangle(a.ClientRectangle, "red");
+    if (a.Parent.Debug) a.drawRectangle(a.GraphRectangle, "red");
+  }
+
+
+  drawAxis() {
+    const a = this;
+
+    a.CTX.beginPath();
+
+    if (a.Parent.XAxis.Position == 'top') {
+      a.CTX.moveTo(a.GraphRectangle.X, (a.GraphRectangle.Y + a.GraphRectangle.H));
+      a.CTX.lineTo(a.GraphRectangle.X, a.GraphRectangle.Y);
+      a.CTX.lineTo((a.GraphRectangle.X + a.GraphRectangle.W), a.GraphRectangle.Y);
+    } else {
+      a.CTX.moveTo(a.GraphRectangle.X, a.GraphRectangle.Y);
+      a.CTX.lineTo(a.GraphRectangle.X, (a.GraphRectangle.Y +a.GraphRectangle.H));
+      a.CTX.lineTo((a.GraphRectangle.X + a.GraphRectangle.W), (a.GraphRectangle.Y + a.GraphRectangle.H));
+    }
+
+    a.CTX.lineWidth = a.Parent.Axis.LineWidth;
+    a.CTX.strokeStyle = a.Parent.Axis.LineColour1;
+    a.CTX.stroke();
+  }
+
+  drawXAxisLabels() {
+    const a = this;
+    const labelSize = a.measureText(a.Parent.Axis.Font, "0");
+
+    let posY = 0;
+    let posDayY = 0;
+    let posMonthY = 0;
+
+    if (a.Parent.XAxis.Position == 'top') {
+      posY = (a.GraphRectangle.Y - a.Parent.Axis.LineWidth) - 2;
+      posDayY = (posY - (labelSize.H + a.Parent.XAxis.DayLineHeight));
+      posMonthY = (posDayY - (labelSize.H + a.Parent.Axis.LabelSpacing));
+    } else {
+      posY = (a.GraphRectangle.Y + a.GraphRectangle.H) + a.Parent.Axis.LineWidth;
+      posDayY = (posY + a.Parent.XAxis.DayLineHeight);
+      posMonthY = (posDayY + labelSize.H + a.Parent.Axis.LabelSpacing);
+    }
+
+    a.XAxisPositions.forEach(function(e, i) {
+      const date = a.Parent.ConvertToDate(e.Date);
+
+      let writeLabel = false;
+      if ((i == 0)) {
+        // Don't label first entry if too close to the next month
+        if (date.getDate() < 25) {
+          writeLabel = true;
+        }
+      } else if (date.getDate() == 1) {
+        writeLabel = true;
+      }
+
+      // if (i == 0) {
+      //   // Don't write first date
+      // } else {
+        // Write date (dd)
+        a.drawText(e.X, posDayY, a.Parent.DateToString(date, "dd"), a.Parent.Axis.Font, a.Parent.Axis.LabelColour, "center");
+      // }
+
+      // Write month (MMMM) on first of the month
+      if (writeLabel) {
+        a.drawText(e.X, posMonthY, a.Parent.DateToString(date, "MMMM yyyy"), a.Parent.Axis.Font, a.Parent.Axis.LabelColour, "left");
+      }
+    });
+  }
+
+  drawXAxisTicks() {
+    const a = this;
+
+    let startPosX = a.GraphRectangle.X;
+    const endPosX = (a.GraphRectangle.X + a.GraphRectangle.W);
+    let posY = 0;
+    let posDayY = 0;
+    let posHourY = 0;
+
+    if (a.Parent.XAxis.Position == 'top') {
+      posY = (a.GraphRectangle.Y - a.Parent.Axis.LineWidth);
+      posDayY = (posY - a.Parent.XAxis.DayLineHeight);
+      posHourY = (posY - a.Parent.XAxis.HourLineHeight);
+    } else {
+      posY = (a.GraphRectangle.Y + a.GraphRectangle.H) + a.Parent.Axis.LineWidth;
+      posDayY = (posY + a.Parent.XAxis.DayLineHeight);
+      posHourY = (posY + a.Parent.XAxis.HourLineHeight);
+    }
+
+    let i = 0;
+
+    while (true) {
+      if (startPosX >= endPosX) {
+        break;
+      }
+
+      a.CTX.beginPath();
+      a.CTX.moveTo(startPosX, posY);
+
+      if ((i % a.Parent.XAxis.NoPartPerDay) == 0) {
+        a.CTX.lineTo(startPosX, posDayY);
+        a.CTX.strokeStyle = a.Parent.XAxis.DayLineColour;
+      } else {
+        a.CTX.lineTo(startPosX, posHourY);
+        a.CTX.strokeStyle = a.Parent.XAxis.HourLineColour;
+      }
+
+      a.CTX.lineWidth = a.Parent.Axis.LineWidth;
+      a.CTX.stroke();
+
+      startPosX += a.Parent.XAxis.HourLineSpace;
+
+      i++;
+    }
+  }
+
+}

bbtimeline-canvas.js

@@ -0,0 +1,177 @@
+class BBTimelineCanvas {
+  constructor(parentEl, el) {
+    const a = this;
+
+    a.Parent = parentEl;
+    a.Container = el;
+    a.CTX = a.Container.getContext("2d");
+
+    a.initialiseComponents();
+  }
+
+  initialiseComponents() {
+    const a = this;
+
+    a.Container.style.width = a.Parent.Size.W + "px";
+    a.Container.style.height = a.Parent.Size.H + "px";
+    a.Container.style.position = 'absolute';
+    a.Container.style.border = 'none';
+
+    a.CTX.canvas.width = a.Parent.Size.W;
+    a.CTX.canvas.height = a.Parent.Size.H;
+
+    a.Clear();
+  }
+
+
+  get ClientRectangle() {
+    const a = this;
+
+    return {
+      X: a.Parent.Padding.Left,
+      Y: a.Parent.Padding.Top,
+      W: (a.Parent.Size.W - (a.Parent.Padding.Left + a.Parent.Padding.Right)),
+      H: (a.Parent.Size.H - (a.Parent.Padding.Top + a.Parent.Padding.Bottom))
+    };
+  }
+
+
+  Clear() {
+    const a = this;
+
+    a.CTX.clearRect(0, 0, a.CTX.canvas.width, a.CTX.canvas.height);
+  }
+
+  Invalidate() {
+    // placeholder
+  }
+
+  drawCircle(x, y, width, borderWidth, borderColour, backColour) {
+    const a = this;
+    const calcBorderWidth = (borderWidth * 2);
+    const calcWidth = width - calcBorderWidth;
+    const offset = a.half(width);
+
+    a.CTX.beginPath();
+    a.CTX.arc(x, y, calcWidth, 0, 2 * Math.PI, false);
+    a.CTX.fillStyle = backColour;
+    a.CTX.fill();
+    a.CTX.lineWidth = borderWidth;
+    a.CTX.strokeStyle = borderColour;
+    a.CTX.stroke();
+
+    const result = {
+      X: x - (offset + borderWidth),
+      Y: y - (offset + borderWidth),
+      W: (width + calcBorderWidth),
+      H: (width + calcBorderWidth)
+    };
+
+    return result;
+  }
+
+  drawRectangle(rectangle, colour) {
+    const a = this;
+
+    a.CTX.beginPath();
+    a.CTX.rect(rectangle.X, rectangle.Y, rectangle.W, rectangle.H);
+    //a.ctx.fillStyle = 'yellow';
+    //a.ctx.fill();
+    a.CTX.lineWidth = 1;
+    a.CTX.strokeStyle = colour;
+    a.CTX.stroke();
+
+    return rectangle;
+  }
+
+  drawText(x, y, label, font, foreColour, align) {
+    const a = this;
+
+    a.CTX.font = font;
+    a.CTX.fillStyle = foreColour;
+
+    let size = a.measureText(font, label);
+    size.Y = y;
+
+    switch (align) {
+      case "center":
+        size.X = (x - size.X);
+        break;
+      case "right":
+        size.X = (x - size.W);
+        break;
+      case "left":
+      default:
+        size.X = x;
+        break;
+    }
+
+    a.CTX.fillText(label, size.X, (size.Y + size.H));
+
+    return size;
+  }
+
+  drawVerticalLine(x, y1, y2, width, colour) {
+    const a = this;
+
+    a.CTX.beginPath();
+    a.CTX.moveTo(x, y1);
+    a.CTX.lineTo(x, (y2 - width));
+    a.CTX.lineWidth = width;
+    a.CTX.strokeStyle = colour;
+    a.CTX.stroke();
+
+    const result = {
+      X: x,
+      Y: y1,
+      W: width,
+      H: (y2 - y1)
+    };
+
+    return result;
+  }
+
+
+  half(value) {
+    return (value / 2);
+  }
+
+  measureText(font, value) {
+    const a = this;
+
+    a.CTX.font = font;
+    const size = a.CTX.measureText(value);
+
+    return {
+      W: size.width,
+      H: size.fontBoundingBoxAscent,
+      X: a.half(size.width),
+      Y: a.half(size.fontBoundingBoxAscent)
+    };
+  }
+
+  isPointInRectangle(rect, point) {
+    const x2 = (rect.X + rect.W);
+    const y2 = (rect.Y + rect.H);
+
+    return ((point.X >= rect.X) && (point.X <= x2) && (point.Y >= rect.Y) && (point.Y <= y2));
+  }
+
+  combineRectangle(rect1, rect2) {
+    const x2 = Math.max((rect1.X + rect1.W), (rect2.X + rect2.W));
+    const y2 = Math.max((rect1.Y + rect1.H), (rect2.Y + rect2.H));
+
+    const rect = {
+      X: Math.min(rect1.X, rect2.X),
+      Y: Math.min(rect1.Y, rect2.Y),
+      W: 0,
+      H: 0
+    };
+
+    rect.W = x2 - rect.X;
+    rect.H = y2 - rect.Y;
+
+    return rect;
+  }
+
+}

bbtimeline-flourish-canvas.js

@@ -0,0 +1,33 @@
+class BBTimelineFlourishCanvas extends BBTimelineCanvas {
+  constructor(parentEl, el) {
+    super(parentEl, el);
+
+    const a = this;
+
+    a.XPos = -1;
+  }
+
+  Invalidate() {
+    const a = this;
+
+    a.Clear();
+
+    if (a.XPos < 0) {
+      a.Clear();
+    } else {
+      let posY = 0;
+
+      if (a.Parent.XAxis.Position == 'top') {
+        posY = a.Parent.Layer.Background.GraphRectangle.Y;
+      } else {
+        posY = (a.Parent.Layer.Background.GraphRectangle.Y + a.Parent.Layer.Background.GraphRectangle.H);
+      }
+
+      // a.drawVerticalLine(a.XPos, a.Parent.Layer.Background.GraphRectangle.Y, (a.Parent.Layer.Background.GraphRectangle.Y + a.Parent.Layer.Background.GraphRectangle.H), a.Parent.MarkerLabel.Line.Width, a.Parent.HotTrack.Colour);
+      a.drawCircle(a.XPos, posY, a.Parent.HotTrack.Width, 0, a.Parent.HotTrack.Colour, a.Parent.HotTrack.Colour);
+
+    }
+
+  }
+
+}

bbtimeline-foreground-canvas.js

@@ -0,0 +1,191 @@
+class BBTimelineForegroundCanvas extends BBTimelineCanvas {
+  constructor(parentEl, el) {
+    super(parentEl, el);
+
+    const a = this;
+
+    // a.initialiseComponents();
+  }
+
+  initialiseComponents() {
+    super.initialiseComponents();
+
+    const a = this;
+
+    a.CTX.canvas.addEventListener('mousedown', function (e) {
+      if (!a.Parent.Enabled) {
+        return;
+      }
+
+      var event = a.Parent.FindEventsByCoords(e.offsetX, e.offsetY);
+      if (event == null) {
+        return;
+      }
+
+      if (a.Parent.Debug) console.log(event);
+
+      a.Parent.OnMouseDown(this, e, event);
+    });
+
+    a.CTX.canvas.addEventListener('click', function (e) {
+      if (!a.Parent.Enabled) {
+        return;
+      }
+
+      var event = a.Parent.FindEventsByCoords(e.offsetX, e.offsetY);
+      if (event == null) {
+        return;
+      }
+
+      if (a.Parent.Debug) console.log(event);
+
+      a.Parent.OnClick(this, e, event);
+    });
+
+    a.CTX.canvas.addEventListener('dblclick', function (e) {
+      if (!a.Parent.Enabled) {
+        return;
+      }
+
+      var event = a.Parent.FindEventsByCoords(e.offsetX, e.offsetY);
+      if (event == null) {
+        return;
+      }
+
+      if (a.Parent.Debug) console.log(event);
+
+      a.Parent.OnDblClick(this, e, event);
+    });
+
+    if (a.Parent.EnableHotTracking) {
+      a.CTX.canvas.addEventListener('mousemove', function (e) {
+        if (!a.Parent.Enabled) {
+          return;
+        }
+
+        var event = a.Parent.FindEventsByCoords(e.offsetX, e.offsetY);
+        if (event != null) {
+          a.Container.style.cursor = 'pointer';
+        } else {
+          a.Container.style.cursor = 'default';
+        }
+
+        // Hottracking
+        if (a.Parent.EnableHotTracking) {
+          const point = { X: e.offsetX, Y: e.offsetY };
+          if (a.isPointInRectangle(a.Parent.Layer.Background.GraphRectangle, point)) {
+            if (a.Parent.Debug) console.log(point);
+
+            a.Parent.Layer.Flourish.XPos = point.X;
+
+            a.Parent.OnMouseMove(this, e, event);
+          } else {
+            // Clear hot tracking
+            a.Parent.Layer.Flourish.XPos = -1;
+          }
+
+          a.Parent.Layer.Flourish.Invalidate();
+        }
+
+      });
+    }
+
+    a.Invalidate();
+  }
+
+  Invalidate() {
+    const a = this;
+    const rect = a.Parent.Layer.Background.GraphRectangle;
+    const margin = a.Parent.Layer.Background.Margin;
+
+    a.Clear();
+
+    let startPosY = 0;
+    const visibleEvents = a.Parent.VisibleEvents;
+
+    if (a.Parent.XAxis.Position == 'top') {
+      startPosY = (rect.Y + a.Parent.Marker.Width + 20);
+    } else {
+      startPosY = (rect.Y + a.Parent.Marker.Width);
+    }
+
+    // Clear for collisions detection
+    visibleEvents.forEach(function (e, i) {
+      e.HitBox = { X: 0, Y:0, W: 0, H: 0};
+    });
+
+    visibleEvents.forEach(function (e, i) {
+      // Calculate Y position
+      let posY = a.calcMarkerPosition(e.Position.X, startPosY);
+      let posY2 = 0;
+
+      if (a.Parent.XAxis.Position == 'top') {
+        posY2 = a.Parent.Layer.Background.GraphRectangle.Y;
+      } else {
+        posY2 = (a.Parent.Layer.Background.GraphRectangle.Y + a.Parent.Layer.Background.GraphRectangle.H);
+      }
+
+      if (a.Parent.MarkerLabel.Line.Width > 0) {
+        a.drawVerticalLine(e.Position.X, posY, posY2, a.Parent.MarkerLabel.Line.Width, a.Parent.MarkerLabel.Line.Colour);
+      }
+
+      const markerRectangle = a.drawCircle(e.Position.X, posY, a.Parent.Marker.Width, a.Parent.Marker.BorderWidth, e.BorderColour, e.BackColour);
+
+      e.Position = { X: e.Position.X, Y: posY };
+
+      if (a.Parent.ShowMarkerLabel) {
+        const labelRectangle = a.drawText((markerRectangle.X + markerRectangle.W + margin), markerRectangle.Y, e.Label, a.Parent.MarkerLabel.Font, a.Parent.MarkerLabel.Colour, "left");
+        labelRectangle.W += a.Parent.MarkerLabel.Margin;
+
+        e.HitBox = a.combineRectangle(markerRectangle, labelRectangle);
+      } else {
+        e.HitBox = markerRectangle;
+      }
+
+      if (a.Parent.Debug) a.drawRectangle(e.HitBox, "red");
+      if (a.Parent.Debug) console.log(e);
+    });
+  }
+
+  OnMouseDown(e) {
+    if (!a.Parent.Enabled) {
+      return;
+    }
+
+    var event = a.Parent.FindEventsByCoords(e.offsetX, e.offsetY);
+    if (event == null) {
+      return;
+    }
+
+    if (a.Parent.Debug) console.log(event);
+
+    console.log("!");
+    a.Parent.OnMouseDown(this, e, event);
+  }
+
+  calcMarkerPosition(x, y) {
+    const a = this;
+    const rect = a.Parent.Layer.Background.GraphRectangle;
+
+    // Calculate Y position
+    let hasMoved = false;
+    let posY = y;
+    for (let i=0; i<a.Parent.Layer.Background.NoStep; i++)
+    {
+      posY = y + (a.Parent.Layer.Background.StepHeight * i);
+
+      var clippedEvent = a.Parent.FindEventsByCoords(x, posY);
+      if (clippedEvent == null) {
+        hasMoved = true;
+        break;
+      }
+    }
+
+    if (!hasMoved) {
+      posY = y;
+    }
+
+    return posY;
+  }
+
+}

bbtimeline.js

@@ -1,14 +1,12 @@
 /**
  * BBTimeline
- * @version v0.1.0.089 beta (2023/10/14 1658)
+ * @version v0.1.1.121 beta (2023/10/18 2058)
  */
 class BBTimeline {
   constructor(el) {
     const a = this;
 
     a.Container = document.getElementById(el);
-    a.DateParsePattern = "yyyy-MM-dd";
-    a.Debug = false;
     a.Padding = {
       Left: 20,
       Top: 20,
@@ -19,56 +17,148 @@ class BBTimeline {
       W: a.Container.innerWidth || a.Container.clientWidth,
       H: a.Container.innerHeight || a.Container.clientHeight
     };
+    a.Layer = {
+      Background: null,
+      Flourish: null,
+      Markers: null
+    };
 
-    a.ctx = a.Container.getContext("2d");
-    a.ctx.canvas.width = a.Size.W;
-    a.ctx.canvas.height = a.Size.H;
+    a.DateParsePattern = "yyyy-MM-dd";
 
     a.Axis = {
-      LineColour1: "#CFCFCF",
+      LineColour1: "#000000",
       LineWidth: 1,
       Font: "8pt Arial",
       LabelColour: "#000000",
-      LabelSpacing: 6,
-      X: {
-        NoPartPerDay: 4,
-        HourLineSpace: 6,
-        HourLineHeight: 10,
-        HourLineColour: "#A6A6A6",
-        DayLineHeight: 20,
-        DayLineColour: "#282828"
-      }
+      LabelSpacing: 6
     };
+    a.XAxis = {
+      NoPartPerDay: 4,
+      HourLineSpace: 6,
+      HourLineHeight: 10,
+      HourLineColour: "#EAEAEA",
+      DayLineHeight: 20,
+      DayLineColour: "#9E9E9E",
+      Position: 'bottom'
+    };
+
     a.Marker = {
       BorderColour: "#3A5D9C",
       BorderWidth: 2,
       BackColour: "#D4DEEF",
-      Width: 10,
-      ForeColour: "#3A5D9C",
+      Width: 10
+    };
+    a.MarkerLabel = {
+      Colour: "#3A5D9C",
       Font: "9pt Arial",
-      CollisionMargin: 8
+      Margin: 8,
+      Line: {
+        Colour: "#A6A6A6",
+        Width: 1,
+      }
     };
-    a.HighlightLine = {
-      Colour: "#A6A6A6",
-      Width: 1,
+
+    a.HotTrack  = {
+      Colour: "#F57C00",
+      Width: 3
     };
+
     a.Events = [];
-    a.StartDate = a.DateToString(new Date(), a.DateParsePattern);
+    a.StartDate = a.DateToInternalString(new Date());
     a.ShowDate = a.StartDate;
-    a.GraphRectangle = a.calcGraphRectangle();
+    a.ShowMarkerLabel = true;
+
     a.Enabled = false;
+    a.Debug = false;
+    a.EnableHotTracking = true;
 
     a.initialiseComponents();
   }
 
+
+  get CTX() {
+    return a.Layer.Markers.CTX;
+  }
+
+  get NewEvent() {
+    const a = this;
+
+    return {
+      Date: "",
+      Label: "",
+      Position: { X: 0, Y: 0 },
+      Events: [],
+      HitBox: null,
+      BorderColour: a.Marker.BorderColour,
+      BackColour: a.Marker.BackColour
+    };
+  }
+
+  get NewEventItem() {
+    return {
+      Title: "",
+      Description: "",
+      Link: "",
+      Tag: null
+    };
+  }
+
+  get VisibleDays() {
+    const a = this;
+    const clientWidth = (a.Size.W - (a.Padding.Left + a.Padding.Right));
+
+    return Math.floor(clientWidth / (a.XAxis.NoPartPerDay * a.XAxis.HourLineSpace));
+  }
+
+  get VisibleStartDate() {
+    const a = this;
+
+    return a.ConvertToDate(a.ShowDate);
+  }
+
+  get VisibleEndDate() {
+    const a = this;
+
+    let date = a.ConvertToDate(a.ShowDate);
+    date.setDate(date.getDate() + a.VisibleDays);
+
+    // Minus one for lead up
+    date.setDate(date.getDate() - 1);
+
+    return a.DateToString(date, a.DateParsePattern);
+  }
+
+  get VisibleEvents() {
+    const a = this;
+    let result = [];
+
+    a.Layer.Background.XAxisPositions.forEach(function (e) {
+      const event = a.FindEvent(e.Date);
+      if (event == null) {
+        return;
+      }
+
+      // Set offsetX on current view
+      event.Position.X = e.X;
+
+      result.push(event);
+    });
+
+    return result;
+  }
+
+
   AddEvent(date, label, options) {
     const a = this;
 
-    const _options = Object.assign(a.GenerateEventItem(), options);
+    const _options = Object.assign(a.NewEventItem, options);
 
     let event = a.FindEvent(date);
     if (event == null) {
-      a.Events.push(a.GenerateEvent(date));
+      let newEvent = a.NewEvent;
+      newEvent.Date = date;
+
+      a.Events.push(newEvent);
 
       event = a.FindEvent(date);
     }
@@ -80,26 +170,14 @@ class BBTimeline {
     event.Events.push(_options);
   }
 
-  CalcEndDate() {
-    const a = this;
-
-    const calcdays = Math.floor(a.GraphRectangle.W / (a.Axis.X.NoPartPerDay * a.Axis.X.HourLineSpace));
-
-    let date = a.ConvertToDate(a.ShowDate);
-    date.setDate(date.getDate() + calcdays);
-
-    // Minus one for lead up
-    date.setDate(date.getDate() - 1);
-
-    return a.DateToString(date, a.DateParsePattern);
-  }
-
   Clear() {
     const a = this;
 
-    a.ctx.clearRect(0, 0, a.ctx.canvas.width, a.ctx.canvas.height);
+    a.Layer.Background.Clear();
+    a.Layer.Flourish.Clear();
+    a.Layer.Markers.Clear();
 
-    a.StartDate = a.DateToString(new Date(), a.DateParsePattern);
+    a.StartDate = a.DateToInternalString(new Date());
     a.ShowDate = a.StartDate;
     a.Enabled = false;
     a.Events = [];
@@ -120,8 +198,8 @@ class BBTimeline {
 
   FindDatePosition(date) {
     const a = this;
+    const points = a.Layer.Background.XAxisPositions;
 
-    const points = a.getXAxis();
     for (let i=0; i<points.length; i++) {
       if (points[i].Date == date){
         return points[i];
@@ -131,26 +209,6 @@ class BBTimeline {
     return null;
   }
 
-  FindVisibleEvents() {
-    const a = this;
-    let result = [];
-
-    const availableX = a.getXAxis();
-    availableX.forEach(function (e) {
-      const event = a.FindEvent(e.Date);
-      if (event == null) {
-        return;
-      }
-
-      // Set offsetX on current view
-      event.Position.X = e.X;
-
-      result.push(event);
-    });
-
-    return result;
-  }
-
   FindEvent(date) {
     const a = this;
 
@@ -207,19 +265,19 @@ class BBTimeline {
   ShowNext() {
     const a = this;
 
-    let date = a.ConvertToDate(a.ShowDate);
-    date.setMonth(date.getMonth() + 1);
+    let date = a.VisibleStartDate;
+    date.setDate(date.getDate() + (a.VisibleDays - 1));
 
-    a.Show(a.DateToString(date, a.DateParsePattern));
+    a.Show(a.DateToInternalString(date));
   }
 
   ShowPrevious() {
     const a = this;
 
-    let date = a.ConvertToDate(a.ShowDate);
-    date.setMonth(date.getMonth() - 1);
+    let date = a.VisibleStartDate;
+    date.setDate(date.getDate() - (a.VisibleDays - 1));
 
-    a.Show(a.DateToString(date, a.DateParsePattern));
+    a.Show(a.DateToInternalString(date));
   }
 
   UpdateLabel(date, label) {
@@ -249,107 +307,15 @@ class BBTimeline {
     a.Invalidate(false, true);
   }
 
-  initialiseComponents() {
-    const a = this;
-
-    a.ctx.canvas.addEventListener('mousedown', function (e) {
-      if (!a.Enabled) {
-        return;
-      }
-
-      var event = a.FindEventsByCoords(e.offsetX, e.offsetY);
-      if (event == null) {
-        return;
-      }
-
-      if (a.Debug) console.log(event);
-
-      a.OnMouseDown(this, e, event);
-   });
-
-   a.ctx.canvas.addEventListener('click', function (e) {
-    if (!a.Enabled) {
-      return;
-    }
-
-    var event = a.FindEventsByCoords(e.offsetX, e.offsetY);
-    if (event == null) {
-      return;
-    }
-
-    if (a.Debug) console.log(event);
-
-    a.OnClick(this, e, event);
- });
-  }
-
   Invalidate(redrawAxis, redrawMarkers) {
     const a = this;
 
-    if (redrawAxis) {
-      a.ctx.clearRect(0, 0, a.ctx.canvas.width, a.ctx.canvas.height);
+    if (redrawAxis) a.Layer.Background.Invalidate();
 
-      a.drawAxis();
-      a.drawXAxis();
-      a.drawXAxisLabels();
-    }
+    a.Layer.Flourish.Clear();
 
-    if (redrawMarkers) {
-      a.clearChart();
+    if (redrawMarkers) a.Layer.Markers.Invalidate();
 
-      const startPosY = (a.GraphRectangle.Y + a.Marker.Width);
-      const visibleEvents = a.FindVisibleEvents();
-
-      if (a.Debug) console.log(visibleEvents);
-
-      visibleEvents.forEach(function (e, i) {
-        // Calculate Y position
-        let posY = a.calcMarkerPosition(e.Position.X, startPosY);
-
-        a.drawVerticalLine(e.Position.X, posY);
-        const markerRectangle = a.drawMarker(e.Position.X, posY, e.BorderColour, e.BackColour);
-        const labelSize = a.drawText((markerRectangle.X + markerRectangle.W + a.GraphRectangle.Margin), markerRectangle.Y, e.Label, a.Marker.Font, a.Marker.ForeColour, "left");
-
-        e.Position = { X: e.Position.X, Y: posY };
-
-        e.HitBox = {
-          X: markerRectangle.X,
-          Y: markerRectangle.Y,
-          W: (markerRectangle.W + a.GraphRectangle.Margin + labelSize.Width + a.Marker.CollisionMargin),
-          H: markerRectangle.H
-        };
-
-        if (a.Debug) a.drawRectangle(e.HitBox);
-        if (a.Debug) console.log(e);
-      });
-    }
-
-    if (a.Debug) a.drawRectangle(a.GraphRectangle);
-
-  }
-
-
-  GenerateEvent(date) {
-    const a = this;
-
-    return {
-      Date: date,
-      Label: "",
-      Position: { X: 0, Y: 0 },
-      Events: [],
-      HitBox: null,
-      BorderColour: a.Marker.BorderColour,
-      BackColour: a.Marker.BackColour
-    };
-  }
-
-  GenerateEventItem() {
-    return {
-      Title: "",
-      Description: "",
-      Link: "",
-      Tag: null
-    };
   }
 
   DateToString(date, pattern) {
@@ -398,302 +364,37 @@ class BBTimeline {
     return result;
   }
 
-  OnMouseDown(sender, e, event) {
-  }
-
-  OnClick(sender, e, event) {
-  }
-
-
-  calcGraphRectangle() {
+  DateToInternalString(date) {
     const a = this;
 
-    const xAxisHeight = a.calcXAxisHeight();
-
-    let result = {
-      X: a.Padding.Left,
-      Y: a.Padding.Top,
-      W: (a.Size.W - (a.Padding.Left + a.Padding.Right)),
-      H: (a.Size.H - (a.Padding.Top + a.Padding.Bottom) - xAxisHeight),
-      Margin: (a.Marker.BorderWidth * 2)
-    };
-
-    result.StepHeight = a.Marker.Width + result.Margin;
-    result.NoStep = Math.floor(result.H / result.StepHeight);
-
-    return result;
-  }
-
-  calcXAxisHeight() {
-    const a  = this;
-    const labelSize = a.measureText(a.Axis.Font, "0");
-    const result = labelSize.Height + a.Axis.LabelSpacing + (a.Axis.X.DayLineHeight * 2);
-
-    return result;
-  }
-
-
-  calcMarkerPosition(x, y) {
-    const a = this;
-
-    // Calculate Y position
-    let hasMoved = false;
-    let posY = y;
-    for (let i=0; i<a.GraphRectangle.NoStep; i++)
-    {
-      posY = y + (a.GraphRectangle.StepHeight * i);
-
-      var clippedEvent = a.FindEventsByCoords(x, posY);
-      if (clippedEvent == null) {
-        hasMoved = true;
-        break;
-      }
-    }
-
-    if (!hasMoved) {
-      posY = y;
-    }
-
-    return posY;
-  }
-
-  clearChart() {
-    const a = this;
-    const rect = {
-      X: a.GraphRectangle.X,
-      Y: a.GraphRectangle.Y,
-      W: a.GraphRectangle.W,
-      H: a.GraphRectangle.H
-    };
-
-    rect.X += a.Axis.LineWidth;
-    rect.Y -= a.Padding.Top;
-    rect.W -= a.Axis.LineWidth;
-    rect.W += a.Padding.Right;
-    rect.H -= a.Axis.LineWidth;
-    rect.H += a.Padding.Top;
-
-    a.ctx.clearRect(rect.X, rect.Y, rect.W, rect.H);
-
-    if (a.Debug) a.drawRectangle(rect);
-
-    // Clear marker positions
-    const visibleEvents = a.FindVisibleEvents();
-    visibleEvents.forEach(function (e, i) {
-      e.Position = { X: 0, Y: 0 };
-      e.HitBox = null;
-    });
-  }
-
-  drawAxis() {
-    const a = this;
-
-    a.ctx.beginPath();
-    a.ctx.moveTo(a.GraphRectangle.X, a.GraphRectangle.Y);
-    a.ctx.lineTo(a.GraphRectangle.X, (a.GraphRectangle.H + a.GraphRectangle.Y));
-    a.ctx.lineTo((a.GraphRectangle.W + a.GraphRectangle.X), (a.GraphRectangle.H + a.GraphRectangle.Y));
-    a.ctx.lineWidth = a.Axis.LineWidth;
-    a.ctx.strokeStyle = a.Axis.LineColour1;
-    a.ctx.stroke();
-  }
-
-  drawXAxis() {
-    const a = this;
-
-    let startPosX = a.GraphRectangle.X;
-    const endPosX = (a.GraphRectangle.X + a.GraphRectangle.W);
-    const posY = (a.GraphRectangle.Y + a.GraphRectangle.H) + a.Axis.LineWidth;
-
-    let i = 0;
-
-    while (true) {
-      if (startPosX >= endPosX) {
-        break;
-      }
-
-      a.ctx.beginPath();
-      a.ctx.moveTo(startPosX, posY);
-
-      if ((i % a.Axis.X.NoPartPerDay) == 0) {
-        a.ctx.lineTo(startPosX, (posY + a.Axis.X.DayLineHeight));
-        a.ctx.strokeStyle = a.Axis.X.DayLineColour;
-      } else {
-        a.ctx.lineTo(startPosX, (posY + a.Axis.X.HourLineHeight));
-        a.ctx.strokeStyle = a.Axis.X.HourLineColour;
-      }
-
-      a.ctx.lineWidth = a.Axis.LineWidth;
-      a.ctx.stroke();
-
-      startPosX += a.Axis.X.HourLineSpace;
-
-      i++;
-    }
-  }
-
-  drawXAxisLabels() {
-    const a = this;
-
-    const result = a.getXAxis();
-    const posY = (a.GraphRectangle.Y + a.GraphRectangle.H) + a.Axis.LineWidth;
-
-    result.forEach(function(e, i) {
-      const date = a.ConvertToDate(e.Date);
-
-      let writeLabel = false;
-      if ((i == 0)) {
-        // Don't label first entry if too close to the next month
-        if (date.getDate() < 25) {
-          writeLabel = true;
-        }
-      } else if (date.getDate() == 1) {
-        writeLabel = true;
-      }
-
-      // if (i == 0) {
-      //   return;
-      // }
-
-      const labelSize = a.drawText(e.X, (posY + a.Axis.X.DayLineHeight), a.DateToString(date, "dd"), a.Axis.Font, a.Axis.LabelColour, "center");
-
-      // Write month on first of the month
-      if (writeLabel) {
-        a.drawText(e.X, (posY + a.Axis.X.DayLineHeight + labelSize.Height + a.Axis.LabelSpacing), a.DateToString(date, "MMMM yyyy"), a.Axis.Font, a.Axis.LabelColour, "left");
-      }
-    });
-  }
-
-  drawMarker(x, y, borderColour, backColour) {
-    const a = this;
-    const width = a.Marker.Width - (a.Marker.BorderWidth * 2);
-
-    a.ctx.beginPath();
-    a.ctx.arc(x, y, width, 0, 2 * Math.PI, false);
-    a.ctx.fillStyle = backColour;
-    a.ctx.fill();
-    a.ctx.lineWidth = a.Marker.BorderWidth;
-    a.ctx.strokeStyle = borderColour;
-    a.ctx.stroke();
-
-    return a.measureMarker(x, y);
-  }
-
-  drawText(x, y, label, font, foreColour, align) {
-    const a = this;
-
-    a.ctx.font = font;
-    a.ctx.fillStyle = foreColour;
-
-    const size = a.measureText(font, label);
-
-    switch (align) {
-      case "center":
-        x = (x - size.OffsetLeft);
-        break;
-      case "right":
-        x = (x - size.Width);
-        break;
-      case "left":
-      default:
-        // do nothing
-        break;
-    }
-
-    a.ctx.fillText(label, x, (y + size.Height));
-
-    return size;
-  }
-
-  drawRectangle(rectangle) {
-    const a = this;
-
-    a.ctx.beginPath();
-    a.ctx.rect(rectangle.X, rectangle.Y, rectangle.W, rectangle.H);
-    //a.ctx.fillStyle = 'yellow';
-    //a.ctx.fill();
-    a.ctx.lineWidth = 1;
-    a.ctx.strokeStyle = 'red';
-    a.ctx.stroke();
-  }
-
-  drawVerticalLine(x, y) {
-    const a = this;
-    const linePosY = (a.GraphRectangle.Y + a.GraphRectangle.H);
-
-    if (y <= 0) {
-      y = (a.GraphRectangle.Y + a.HighlightLine.Width);
-    }
-
-    a.ctx.beginPath();
-    a.ctx.moveTo(x, y);
-    a.ctx.lineTo(x, (linePosY - a.HighlightLine.Width));
-    a.ctx.lineWidth = a.HighlightLine.Width;
-    a.ctx.strokeStyle = a.HighlightLine.Colour;
-    a.ctx.stroke();
-  }
-
-  getXAxis() {
-    const a = this;
-    const endPosX = (a.GraphRectangle.X + a.GraphRectangle.W);
-
-    let result = [];
-    let x = a.GraphRectangle.X;
-    let date = a.ConvertToDate(a.ShowDate);
-
-    // Rollback one day
-    date.setDate(date.getDate() - 1);
-
-    while (true) {
-      if (x >= endPosX) {
-        break;
-      }
-
-      result.push({
-        Date: a.DateToString(date, a.DateParsePattern),
-        X: x
-      });
-
-      x += (a.Axis.X.HourLineSpace * a.Axis.X.NoPartPerDay);
-      date.setDate(date.getDate() + 1);
-    }
-
-    return result;
-  }
-
-  half(value) {
-    return (value / 2);
-  }
-
-  measureMarker(x, y) {
-    const a = this;
-    const offset = a.half(a.Marker.Width);
-
-    const result = {
-      X: x - (offset + a.Marker.BorderWidth),
-      Y: y - (offset + a.Marker.BorderWidth),
-      W: (a.Marker.Width + (a.Marker.BorderWidth * 2)),
-      H: (a.Marker.Width + (a.Marker.BorderWidth * 2))
-    };
-
-    return result;
-  }
-
-  measureText(font, value) {
-    const a = this;
-
-    a.ctx.font = font;
-    const size = a.ctx.measureText(value);
-
-    return {
-      Width: size.width,
-      Height: size.fontBoundingBoxAscent,
-      OffsetLeft: a.half(size.width),
-      OffsetTop: a.half(size.fontBoundingBoxAscent)
-    };
+    return a.DateToString(date, a.DateParsePattern);
   }
 
   ConvertToDate(value) {
     return new Date(Date.parse(value));
   }
 
+
+  OnMouseDown(sender, e, event) { /* delegate */ }
+
+  OnMouseMove(sender, e, event) { /* delegate */ }
+
+  OnClick(sender, e, event) { /* delegate */ }
+
+  OnDblClick(sender, e, event) { /* delegate */ }
+
+
+  initialiseComponents() {
+    const a = this;
+
+    a.Container.innerHTML = "<canvas></canvas><canvas></canvas><canvas></canvas>";
+
+    const canvasList = a.Container.getElementsByTagName("canvas");
+
+    a.Layer.Background = new BBTimelineBackgroundCanvas(a, canvasList[0]);
+    a.Layer.Flourish = new BBTimelineFlourishCanvas(a, canvasList[1]);
+    a.Layer.Markers = new BBTimelineForegroundCanvas(a, canvasList[2]);
+
+  }
+
 }

demo-test.html

@@ -11,6 +11,11 @@
   <!-- <link href="http://cdn.hiimray.co.uk/8206c600-707c-469e-8d49-a76ae35782af/bootstrap/5.3.0/dist/css/bootstrap.min.css" rel="stylesheet" /> -->
 
   <script src="bbtimeline.js"></script>
+  <script src="bbtimeline-canvas.js"></script>
+  <script src="bbtimeline-background-canvas.js"></script>
+  <script src="bbtimeline-flourish-canvas.js"></script>
+  <script src="bbtimeline-foreground-canvas.js"></script>
+
   <!-- <script src="bbtimeline.min.js"></script> -->
 
   <title></title>
@@ -19,20 +24,35 @@
 
   <div class="row">
     <div class="column1">
-      <canvas id="myCanvas"></canvas>
+      <div id="myCanvas"></div>
 
       <p>
         <textarea id="memoBox1" readonly></textarea>
-
       </p>
     </div>
     <div class="column2">
 
       <p>
         <button onclick="Clear()">Clear</button>
-        <button onclick="ToggleDebug()">Toggle Debug</button>
         <button onclick="Refresh()">Refresh</button>
       </p>
+
+      <hr />
+
+      <p>
+        <button onclick="ToggleDebug()">Toggle Debug</button>
+      </p>
+
+      <hr />
+      <p>
+        <button onclick="ToggleHotTracking()">Toggle Hot Tracking</button>
+        <button onclick="ToggleShowLabel()">Toggle Marker Label</button>
+        <button onclick="ToggleMarkerTail()">Toggle Marker Tail</button>
+      </p>
+      <p>
+        <button onclick="ToggleXAxisPosition()">Toggle X-Axis Position</button>
+      </p>
+
       <hr />
 
       <p>
@@ -47,8 +67,8 @@
 
       <p>
         <button onclick="GoToToday()">Show Start Date</button>
-        <button onclick="GoToPreviousMonth()">Show Previous Month</button>
-        <button onclick="GoToNextMonth()">Show Next Month</button>
+        <button onclick="GoToPrevious()">Show Previous</button>
+        <button onclick="GoToNext()">Show Next</button>
       </p>
       <hr />
 
@@ -88,16 +108,6 @@ body {
   padding: 20px;
 }
 
-canvas {
-  border-style: solid;
-  border-width: 1px;
-  border-color: #000000;
-  width: 100%;
-  height: 300px;
-  padding: 0;
-  margin: 0;
-}
-
 textarea {
   border-style: solid;
   border-width: 1px;
@@ -107,6 +117,7 @@ textarea {
   width: 100%;
 }
 
+
 .column1 {
   flex: 70%;
   padding: 20px;
@@ -119,6 +130,17 @@ textarea {
   display: flex;
 }
 
+
+#myCanvas {
+  border-style: solid;
+  border-width: 1px;
+  border-color: #000000;
+  width: 100%;
+  height: 300px;
+  padding: 0;
+  margin: 0;
+}
+
   </style>
 
   <script>
@@ -140,6 +162,14 @@ timeline1.OnClick = function(sender, e, event) {
   LogInfo(JSON.stringify(event));
   LogInfo("");
 }
+timeline1.OnDblClick = function(sender, e, event) {
+  LogInfo("");
+  LogInfo("OnDblClick");
+  LogInfo(JSON.stringify(sender));
+  LogInfo(JSON.stringify(e));
+  LogInfo(JSON.stringify(event));
+  LogInfo("");
+}
 
 SetToday();
 
@@ -156,17 +186,46 @@ function ToggleDebug() {
   timeline1.Invalidate(true, true);
 }
 
+function ToggleHotTracking() {
+  timeline1.EnableHotTracking = !timeline1.EnableHotTracking;
+  timeline1.Invalidate(true, true);
+}
+
+function ToggleShowLabel() {
+  timeline1.ShowMarkerLabel = !timeline1.ShowMarkerLabel;
+  timeline1.Invalidate(true, true);
+}
+
+function ToggleXAxisPosition() {
+  if (timeline1.XAxis.Position == 'top') {
+    timeline1.XAxis.Position = 'bottom';
+    timeline1.Padding.Top = 20;
+    timeline1.Padding.Bottom = 0;
+  } else {
+    timeline1.XAxis.Position = 'top';
+    timeline1.Padding.Top = 0;
+    timeline1.Padding.Bottom = 20;
+  }
+
+  timeline1.Invalidate(true, true);
+}
+
+function ToggleMarkerTail() {
+  timeline1.MarkerLabel.Line.Width = ((timeline1.MarkerLabel.Line.Width <= 0) ? 1 : 0);
+  timeline1.Invalidate(true, true);
+}
+
 function Refresh() {
   timeline1.Invalidate(true, true);
 }
 
 function SetToday() {
   const msPerDay = 1000 * 60 * 60 * 24;
-  const startDate = timeline1.DateToString(new Date(), "yyyy-MM-dd");
+  const startDate = timeline1.DateToInternalString(new Date());
 
   timeline1.Load(startDate);
 
-  const endDate = timeline1.CalcEndDate();
+  const endDate = timeline1.VisibleEndDate;
   const noDays = Math.floor((timeline1.ConvertToDate(endDate) - timeline1.ConvertToDate(startDate)) / msPerDay);
 
   LogInfo("Set start date to today (" + startDate + ")");
@@ -175,7 +234,7 @@ function SetToday() {
 
 function GenerateRandomMarker() {
   const msPerDay = 1000 * 60 * 60 * 24;
-  const endDate = timeline1.CalcEndDate();
+  const endDate = timeline1.VisibleEndDate;
   const noDays = Math.floor((timeline1.ConvertToDate(endDate) - timeline1.ConvertToDate(timeline1.ShowDate)) / msPerDay);
 
   let randomDay = GetRandy(1, (noDays - 1));
@@ -183,7 +242,7 @@ function GenerateRandomMarker() {
   let date = timeline1.ConvertToDate(timeline1.ShowDate);
   date.setDate(date.getDate() + randomDay);
 
-  const markerDate = timeline1.DateToString(date, timeline1.DateParsePattern);
+  const markerDate = timeline1.DateToInternalString(date);
 
   const markerName = "Random Marker #" + GetRandy(10000, 99999);
 
@@ -199,20 +258,20 @@ function GoToToday() {
   LogInfo("Go to " + timeline1.ShowDate);
 }
 
-function GoToPreviousMonth() {
+function GoToPrevious() {
   timeline1.ShowPrevious();
 
   LogInfo("Go to " + timeline1.ShowDate);
 }
 
-function GoToNextMonth() {
+function GoToNext() {
   timeline1.ShowNext();
 
   LogInfo("Go to " + timeline1.ShowDate);
 }
 
 function UpdateLabel() {
-  const visibleMarkers = timeline1.FindVisibleEvents();
+  const visibleMarkers = timeline1.VisibleEvents;
   if (visibleMarkers.length <= 0) {
     LogInfo("No visible markers");
     return;
@@ -227,7 +286,7 @@ function UpdateLabel() {
 }
 
 function UpdateMarker() {
-  const visibleMarkers = timeline1.FindVisibleEvents();
+  const visibleMarkers = timeline1.VisibleEvents;
   if (visibleMarkers.length <= 0) {
     LogInfo("No visible markers");
     return;
@@ -241,7 +300,7 @@ function UpdateMarker() {
 }
 
 function DeleteMarker() {
-  const visibleMarkers = timeline1.FindVisibleEvents();
+  const visibleMarkers = timeline1.VisibleEvents;
   if (visibleMarkers.length <= 0) {
     LogInfo("No visible markers");
     return;
@@ -256,7 +315,7 @@ function DeleteMarker() {
 }
 
 function FindVisibleEvents() {
-  const visibleMarkers = timeline1.FindVisibleEvents();
+  const visibleMarkers = timeline1.VisibleEvents;
 
   LogInfo("");
   LogInfo(JSON.stringify(visibleMarkers));