Class: Timescale

Sheets.GanttSheet.Timescale

Table of contents

Constructors

• constructor

Properties

• bottomTier
• currentDate
• maxDate
• middleTier
• minDate
• nonWorkingTime
• showScaleSeparator
• tierMode
• timescaleBottomTierTextStyle
• timescaleMiddleTierTextStyle
• timescaleTopTierTextStyle
• topTier
• zoomFactor

Methods

• scroll
• scrollBy
• scrollOneTick
• scrollTo
• zoomAuto
• zoomIn
• zoomOut
• zoomTo
• zoomToRange

Constructors

constructor

• new Timescale()

Creates a timescale for project. Internal used only.

classdesc Represents the timescale of GanttChart.

Properties

bottomTier

• bottomTier: TimescaleTier

Gets the bottom tier of the timescale.

readonly

---

currentDate

• currentDate: Date

Gets the current date for the timescale. To change it, call scroll functions of timescale.

readonly

---

maxDate

• maxDate: Date

Gets or sets the maximum date of the scrollable area of the timescale. The default value is 2030-1-1.

---

middleTier

• middleTier: TimescaleTier

Gets the middle tier of the timescale.

readonly

---

minDate

• minDate: Date

Gets or sets the minimum date of the scrollable area of the timescale. The default value is 2020-1-1.

---

nonWorkingTime

• nonWorkingTime: NonWorkingTimeStyle

Gets the non working time area of the timescale.

readonly

---

showScaleSeparator

• showScaleSeparator: boolean

Gets or sets a boolean value that indicates whether show the scale separator line between top tier and middle tier.

---

tierMode

• tierMode: TimescaleTierMode

Gets or sets the tier mode for the timescale.

---

timescaleBottomTierTextStyle

• timescaleBottomTierTextStyle: TextStyle

Gets or sets the text style for bottom tier labels of timescales.

---

timescaleMiddleTierTextStyle

• timescaleMiddleTierTextStyle: TextStyle

Gets or sets the text style for middle tier labels of timescales.

---

timescaleTopTierTextStyle

• timescaleTopTierTextStyle: TextStyle

Gets or sets the text style for top tier labels of timescales.

---

topTier

• topTier: TimescaleTier

Gets the top tier of the timescale.

readonly

---

zoomFactor

• zoomFactor: number

Gets a number value that indicates the zoom factor for timescale. To change it, call zoom functions of timescale.

readonly

Methods

scroll

▸ scroll(pixels): void

Scrolls the timescale in pixels. Note timescale will scroll to the nearest tick.

Parameters

Name	Type	Description
pixels	number	Indicates the pixels to scroll. Positive number indicates scroll forward, and negative number indicates scroll backward.

Returns

void

---

scrollBy

▸ scrollBy(count, unit): void

Scrolls the timescale by the specified count of units. Note timescale will scroll to the nearest tick.

Parameters

Name	Type	Description
count	number	Indicates the time in specified units to scroll. Positive number indicates scroll forward, and negative number indicates scroll backward.
unit	TimescaleUnit	Indicates the unit for count value.

Returns

void

---

scrollOneTick

▸ scrollOneTick(forward): void

Scrolls the timescale by one tick.

Parameters

Name	Type	Description
forward	boolean	A boolean value that indicates to scroll forward or backward.

Returns

void

---

scrollTo

▸ scrollTo(date, percentOfViewport?): void

Scrolls the timescale to the specified date. Note timescale will scroll to the nearest tick.

Parameters

Name	Type	Description
date	Date	A Date value indicates the scroll target.
percentOfViewport?	number	-

Returns

void

---

zoomAuto

▸ zoomAuto(): void

Zooms the timescale to suitable factor according to the labels of ticks on each tiers automatically.

Returns

void

---

zoomIn

▸ zoomIn(adjustTierUnit?): void

Zooms in the timescale to the next level.

Parameters

Name	Type
adjustTierUnit?	boolean

Returns

void

---

zoomOut

▸ zoomOut(adjustTierUnit?): void

Zooms out the timescale to the next level.

Parameters

Name	Type
adjustTierUnit?	boolean

Returns

void

---

zoomTo

▸ zoomTo(zoomFactor, adjustTierUnit?): void

Zooms the timescale to the specified factor.

Parameters

Name	Type	Description
zoomFactor	number	A number value indicates the target zoom factor.
adjustTierUnit?	boolean	-

Returns

void

---

zoomToRange

▸ zoomToRange(start, end, adjustTierUnit?): void

Zooms the timescale to display the target date range in viewport. Note timescale will adjust to the nearest ticks.

Parameters

Name	Type	Description
start	Date	A date value indicates the start of data range to display.
end	Date	A date value indicates the end of data range to display.
adjustTierUnit?	boolean	-

Returns

void