TRSChartAxisHack Class

Create(TRSCustomChartPanel)

Overloaded. Initializes a new instance of the TRSChartAxis class. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Brush

Represents property Brush. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Charts

Tracks the list of RSChartPanel|TRSCustomChart components that are using this axis, either as their HorizontalAxis or VerticalAxis. Use the Charts property to iterate over all the charts for the axis.
 (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

DateTimeFormat

Specifies the format of the chart values when the axis represents date time values. If the axis does not represent date time values, the Format property specifies the format of the chart values. The two format properties are used by the  FormatValue method to return the proper string representation of a chart value. Use the  IsDateTime method to determine if the axis is displaying date time values.

The DateTimeFormat string is like other Delphi Date-Time Format Strings that specify the formatting of date-time values (such as TDateTime) when they are converted to strings.

Date Time Format Strings are composed from specifiers that represent values to be inserted into the formatted string. Some specifiers (such as "d"), simply format numbers or strings. Other specifiers (such as "/") refer to locale-specific strings from global variables.

In the following table, specifiers are given in lower case. Case is ignored in formats, except for the "am/pm" and "a/p" specifiers.

c

Displays the date using the format given by the ShortDateFormat global variable, followed by the time using the format given by the LongTimeFormat global variable. The time is not displayed if the date-time value indicates midnight precisely.
 

d

Displays the day as a number without a leading zero (1-31).
 

dd

Displays the day as a number with a leading zero (01-31).
 

ddd

Displays the day as an abbreviation (Sun-Sat) using the strings given by the ShortDayNames global variable.
 

dddd

Displays the day as a full name (Sunday-Saturday) using the strings given by the LongDayNames global variable.
 

ddddd

Displays the date using the format given by the ShortDateFormat global variable

dddddd

Displays the date using the format given by the LongDateFormat global variable.
 

e

(Windows only) Displays the year in the current period/era as a number without a leading zero (Japanese, Korean and Taiwanese locales only).

ee

(Windows only) Displays the year in the current period/era as a number with a leading zero (Japanese, Korean and Taiwanese locales only).

g

(Windows only) Displays the period/era as an abbreviation (Japanese and Taiwanese locales only).

gg

(Windows only) Displays the period/era as a full name. (Japanese and Taiwanese locales only).

m

Displays the month as a number without a leading zero (1-12). If the m specifier immediately follows an h or hh specifier, the minute rather than the month is displayed

mm

Displays the month as a number with a leading zero (01-12). If the mm specifier immediately follows an h or hh specifier, the minute rather than the month is displayed.
 

mmm

Displays the month as an abbreviation (Jan-Dec) using the strings given by the ShortMonthNames global variable

mmmm

Displays the month as a full name (January-December) using the strings given by the LongMonthNames global variable

yy

Displays the year as a two-digit number (00-99).

yyyy

Displays the year as a four-digit number (0000-9999).

h

Displays the hour without a leading zero (0-23).
 

hh

Displays the hour with a leading zero (00-23).
 

n

Displays the minute without a leading zero (0-59).

nn

Displays the minute with a leading zero (00-59).
 

s

Displays the second without a leading zero (0-59).

ss

Displays the second with a leading zero (00-59).
 

z

Displays the millisecond without a leading zero (0-999).
 

zzz

Displays the millisecond with a leading zero (000-999).
 

t

Displays the time using the format given by the ShortTimeFormat global variable

tt

Displays the time using the format given by the LongTimeFormat global variable.

am/pm

Uses the 12-hour clock for the preceding h or hh specifier, and displays 'am' for any hour before noon, and 'pm' for any hour after noon. The am/pm specifier can use lower, upper, or mixed case, and the result is displayed accordingly

a/p

Uses the 12-hour clock for the preceding h or hh specifier, and displays 'a' for any hour before noon, and 'p' for any hour after noon. The a/p specifier can use lower, upper, or mixed case, and the result is displayed accordingly

ampm

Uses the 12-hour clock for the preceding h or hh specifier, and displays the contents of the TimeAMString global variable for any hour before noon, and the contents of the TimePMString global variable for any hour after noon

/

Displays the date separator character given by the DateSeparator global variable

:

Displays the time separator character given by the TimeSeparator global variable

'xx'/"xx"

Characters enclosed in single or double quotes are displayed as-is, and do not affect formatting

Assign(TPersistent)

Copies the contents of another similar object to the current object

AxisToPixel(TRSChartValueType)

Overloaded.  Converts from the chart value parameter to a pixel coordinate of the Owner RSChartPanel|TRSCustomChartPanel component. Based on the  ZoomMinimum and  ZoomMaximum range of the chart axis, this routine converts the parameter value into a pixel coordinate. Unlike the overloaded AxisToPixel method, this method assumes that the visual pixel range of the chart axis is defined by the chart panel's  ChartRect property. The chart axis uses the bounds of the rectangle that apply to its location, e.g., a BottomAxis chart axis would use the ChartRect's Left=ZoomMinimum and Right=ZoomMaximum fields for the calculation (the rectangle is also adjusted if StartPosition and EndPosition properties are not their defaults).

Use one of the AxisToPixel methods anytime you need to convert from internal chart axis coordinates to a visual pixel coordinate. For example, if the chart axis has a zoomed range from 0 to 100 and the ChartRect is Left=150 and Right=500, this function would return:
AxisToPixel( 0 ) = 150
AxisToPixel( 50 ) = 325
AxisToPixel( 100 ) = 500

Use one of the  PixelToAxis methods to convert back from pixel coordinates to chart coordinates.
 

AxisToPixel(TRSChartValueType,TCanvasRect)

Overloaded.  Converts from the chart value parameter to a pixel coordinate of the specified ChartRect parameter. Based on the  ZoomMinimum and  ZoomMaximum range of the chart axis, this routine converts the parameter value into a pixel coordinate. Unlike the overloaded AxisToPixel method, this method assumes that the visual pixel range of the chart axis is defined by the ChartRect property. The chart axis uses the bounds of the rectangle that apply to its location, e.g., a BottomAxis chart axis would use the ChartRect's Left=ZoomMinimum and Right=ZoomMaximum fields for the calculation (the rectangle is also adjusted if StartPosition and EndPosition properties are not their defaults).

Use one of the AxisToPixel methods anytime you need to convert from internal chart axis coordinates to a visual pixel coordinate. For example, if the chart axis has a zoomed range from 0 to 100 and the ChartRect is Left=150 and Right=500, this function would return:
AxisToPixel( 0 ) = 150
AxisToPixel( 50 ) = 325
AxisToPixel( 100 ) = 500

Use one of the  PixelToAxis methods to convert back from pixel coordinates to chart coordinates.
 

AxisToPixel(TRSLogarithmicType,TRSChartValueType,TCanvasRect,TRSChartValueType,TRSChartValueType,Boolean)

Overloaded. Represents method AxisToPixel(TRSLogarithmicType,TRSChartValueType,TCanvasRect,TRSChartValueType,TRSChartValueType,Boolean). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

CalculateBounds(TCanvas,TCanvasRect)

Sets the chart axis' Width and Height to their proper values based on the ARect parameter.

Changed

Overloaded. Represents method Changed. (Overrides FMX.RS.ChartPanel.TRSChartGraphic.Changed.)

Changed(TObject)

Overloaded. Represents method Changed(TObject). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

ChartListNotify(TObject,TRSCustomChart,TRSListNotification)

Represents method ChartListNotify(TObject,TRSCustomChart,TRSListNotification). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Clone

Creates a "deep" copy of the chart graphic. It constructs a new chart graphic of the correct type and then calls the  Assign method to copy its properties to the new copy. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

Draw(TCanvas,TCanvasRect)

Overloaded. Paints the chart graphic to the specified Canvas in the specified location. It uses the current canvas' brush and pen. Use the Draw method to paint the chart graphic to any canvas and anywhere and with any size on the canvas.

Draw(TCanvas,TCanvasRect,TRSChartAxis,TRSChartAxis)

Overloaded.  Paints the chart graphic to the specified Canvas in the specified location. It uses the current canvas' brush and pen. Use the Draw method to paint the chart graphic to any canvas and anywhere and with any size on the canvas.

The VertAxis and HorizAxis parameters can be used to provide point to pixel conversions (see RSChartPanel|TRSChartAxis ).

DrawAxis(TCanvas,TCanvasRect)

Represents method DrawAxis(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

DrawAxisLine(TCanvas,TCanvasRect)

Represents method DrawAxisLine(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

DrawGrid(TCanvas,TCanvasRect)

Represents method DrawGrid(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Drawing(TCanvas,TCanvasRect)

Represents method Drawing(TCanvas,TCanvasRect). (Overrides FMX.RS.ChartPanel.TRSChartGraphic.Drawing(TCanvas,TCanvasRect).)

DrawLabels(TCanvas,TCanvasRect)

Represents method DrawLabels(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Drawn(TCanvas,TCanvasRect)

Represents method Drawn(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

DrawTitle(TCanvas,TCanvasRect)

Represents method DrawTitle(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

FormatValue(TRSChartValueType)

Returns a string representation of the chart value based on the  Format or  DateTimeFormat properties. Based on the  IsDateTime method, the FormatValue function converts the floating point value to a string using the  Format property or a date time string using the  DateTimeFormat property.

Use the FormatValue method to convert a value to a string using the formatting of the chart axis
 

FreeNotification(TObject)

Represents method FreeNotification(TObject). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

GetAxisLabelStyle

Represents method GetAxisLabelStyle. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

GetHalfRect(TCanvasRect,Boolean)

Represents method GetHalfRect(TCanvasRect,Boolean). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

GetLabelSpacing(TCanvas,TCanvasRect,TRSChartValueType,TRSChartValueType)

Represents method GetLabelSpacing(TCanvas,TCanvasRect,TRSChartValueType,TRSChartValueType). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

GetLogCycleAxis(TCanvasRect,TRSChartValueType,TRSChartValueType,TRSChartValueType)

Represents method GetLogCycleAxis(TCanvasRect,TRSChartValueType,TRSChartValueType,TRSChartValueType). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

GetLogCycleZoomChart(TCanvasRect,TRSChartValueType,TRSChartValueType,TRSChartValueType)

Represents method GetLogCycleZoomChart(TCanvasRect,TRSChartValueType,TRSChartValueType,TRSChartValueType). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Initialize

Represents method Initialize. (Overrides FMX.RS.ChartPanel.TRSChartGraphicArea.Initialize.)

InitializeEvents

Represents method InitializeEvents. (Overrides FMX.RS.ChartPanel.TRSChartGraphicArea.InitializeEvents.)

InternalDraw(TCanvas,TCanvasRect)

Represents method InternalDraw(TCanvas,TCanvasRect). (Overrides FMX.RS.ChartPanel.TRSChartGraphicArea.InternalDraw(TCanvas,TCanvasRect).)

IsDateTime

Returns whether the axis is displaying chart values using a date time string representation or a floating point string representation. The chart axis displays date time values when the  ActiveChart (the first visible chart in the  Charts list) specifies its  IsDateTime property to True. When the chart axis displays date time values, the  FormatValue method uses the  DateTimeFormat property for formatting. Otherwise, the FormatValue method uses the  Format property for formatting. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Pan(Integer)

Overloaded.  Moves the visual window, specified by the  ZoomMinimum and  ZoomMaximum properties, by the amount. The Amount parameter, which is based on pixels, is first converted into the equivalent amount based on chart axis values. Specifying a positive amount moves the zoomed window right and a negative amount moves it left.

Use the overloaded Pan method to move the visual window using chart axis values directly.

The Pan method does nothing if the chart axis is not zoomed in (  Zooming = True).
 

Pan(TRSChartValueType)

Overloaded.  Moves the visual window, specified by the  ZoomMinimum and  ZoomMaximum properties, by the amount. The Amount parameter is based on chart axis values. Specifying a positive amount moves the zoomed window right and a negative amount moves it left.

Use the overloaded Pan method to move the visual window using pixel amounts directly.

The Pan method does nothing if the chart axis is not zoomed in (  Zooming = True).
 

PixelToAxis(TCanvasPixel,Boolean)

Overloaded.  Converts from a canvas pixel coordinate to a chart axis coordinate. Based on the  ZoomMinimum and  ZoomMaximum range of the chart axis, this routine converts the parameter value into a chart axis coordinate. Unlike the overloaded PixelToAxis method, this method assumes that the visual pixel range of the chart axis is defined by the chart panel's ChartRect property (obtained through the Owner property). The chart axis uses the bounds of the rectangle that apply to its location, e.g., a BottomAxis chart axis would use the ChartRect's Left=ZoomMinimum and Right=ZoomMaximum fields for the calculation (the rectangle is also adjusted if StartPosition and EndPosition properties are not their defaults).

Use one of the PixelToAxis methods anytime you need to convert from a canvas pixel coordinate to the internal chart axis coordinates. For example, if the chart axis has a zoomed range from 0 to 100 and the ChartRect is Left=150 and Right=500, this function would return:
PixelToAxis( 150 ) = 0
PixelToAxis( 325 ) = 50
PixelToAxis( 500 ) = 100

Use one of the AxisToPixel methods to convert back from chart coordinates to canvas pixel coordinates.
 

PixelToAxis(TCanvasPixel,TCanvasRect,Boolean)

Overloaded.  Converts from a canvas pixel coordinate to a chart axis coordinate. Based on the  ZoomMinimum and  ZoomMaximum range of the chart axis, this routine converts the parameter value into a chart axis coordinate. This method uses the ChartRect parameter to specify the visual pixel range of the chart axis. The chart axis uses the bounds of the rectangle that apply to its location, e.g., a BottomAxis chart axis would use the ChartRect's Left=ZoomMinimum and Right=ZoomMaximum fields for the calculation (the rectangle is also adjusted if StartPosition and EndPosition properties are not their defaults).

Use one of the PixelToAxis methods anytime you need to convert from a canvas pixel coordinate to the internal chart axis coordinates. For example, if the chart axis has a zoomed range from 0 to 100 and the ChartRect is Left=150 and Right=500, this function would return:
PixelToAxis( 150 ) = 0
PixelToAxis( 325 ) = 50
PixelToAxis( 500 ) = 100

Use one of the AxisToPixel methods to convert back from chart coordinates to canvas pixel coordinates.
 

PixelToAxis(TRSLogarithmicType,TCanvasPixel,TCanvasRect,TRSChartValueType,TRSChartValueType,Boolean)

Overloaded. Represents method PixelToAxis(TRSLogarithmicType,TCanvasPixel,TCanvasRect,TRSChartValueType,TRSChartValueType,Boolean). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

SenderChanged(TObject)

Overloaded. Represents method SenderChanged(TObject). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

SizeUnzoomed

Returns the size of the axis (Maximum-Minimum) (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

SizeZoomed

Returns the size of the zoomed axis (ZoomMaximum-ZoomMinimum) (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

TiledDraw(TCanvas,TCanvasRect,TTileGraphic,TCanvasPixel,TCanvasPixel)

Overloaded.  Tiles the image across the entire input rectangle.

The Image is drawn at full size from the top left of the ARect across and down until outside of the input rectangle. Use the overloaded TiledDraw methods to constrain the size of the Image.

TiledDraw(TCanvas,TCanvasRect,TTileGraphic,TCanvasPixel,TCanvasPixel,TCanvasPixel,TCanvasPixel)

Overloaded.  Tiles the image across the entire input rectangle.

The Image is drawn at ImageWidth, ImageHeight size from the top left of the ARect across and down until outside of the input rectangle.

TiledDraw(TCanvas,TCanvasRect,TTileGraphic,TCanvasRect)

Overloaded.  Tiles the image across the entire input rectangle.

The Image is drawn at ImageRect size from the top left of the ARect across and down until outside of the input rectangle.

UnboundPixelToAxis(TCanvasPixel,TCanvasRect)

Represents method UnboundPixelToAxis(TCanvasPixel,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Unzoom

Unzooms the axis to its full range. The Unzoom method changes the visual portion of the chart axis' range to its full range (e.g.,  ZoomMinimum =  Minimum and  ZoomMaximum =  Maximum). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

UpdateAxisValues

Represents method UpdateAxisValues. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

UpdateChartAxisInfo

Represents method UpdateChartAxisInfo. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

ValueChanged(TRSCustomChart)

Represents method ValueChanged(TRSCustomChart). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

VisibleChanged(TRSCustomChart)

Overloaded. Represents method VisibleChanged(TRSCustomChart). (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

Zoom(TRSChartValueType,Single)

Overloaded.  Zoom a specific part of the axis range by specifying the center (in chart values, not pixel values) and zoom magnification amount. The Zoom method changes the  ZoomMinimum and  ZoomMaximum properties to zoom the axis into that visual portion of the range. It allows you to change the portion of the axis that is being visually displayed.

The overloaded Zoom method zooms the axis using chart values. The ZoomPixelArea method zooms the axis using canvas rectangle values instead of chart values.
 

Zoom(TRSRect)

Overloaded.  Zoom the axis in on (or magnify) a portion of the axis' range. The Zoom method accepts a rectangle using chart axis coordinates and changes the  ZoomMinimum and  ZoomMaximum properties to zoom the axis into that visual portion of the range. It allows you to change the portion of the axis that is being visually displayed.

The ZoomPixelArea method zooms the axis using canvas rectangle values instead of chart values.
 

ZoomAmount

Returns the current zoom amount or magnification. A value of 1 means no magnification. (Inherited from FMX.RS.ChartPanel.TRSChartAxis.)

ZoomPixelArea(TCanvasRect)

Overloaded.  Zoom the axis in on (or magnify) a portion of the axis' range. The Zoom method accepts a canvas pixel rectangle and changes the  ZoomMinimum and  ZoomMaximum properties to zoom the axis into that visual portion of the range. It allows you to change the portion of the axis that is being visually displayed.

The overloaded Zoom method zooms the axis using chart values instead of canvas rectangle values.
 

OnDraw

Occurs just after the chart graphic is painted. Write an OnDraw event handler to take specific action when the chart graphic has finished painting. The OnDraw event also allows you to do custom painting after the chart graphic has painted. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

OnDrawing

Occurs just before the chart graphic is painted. Write an OnDrawing event handler to take specific action when the chart graphic is about to paint. If the event handler sets the DoDraw parameter to False, the chart graphic will not be painted. The OnDraw event also allows you to do custom painting before the chart graphic has been painted. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)