TRSCustomCircularGauge Class

BACKFACE_BEVEL_LOWER_ID

Represents constant BACKFACE_BEVEL_LOWER_ID.

BACKFACE_BEVEL_UPPER_ID

Represents constant BACKFACE_BEVEL_UPPER_ID.

BACKFACE_GROUP_ID

Represents constant BACKFACE_GROUP_ID.

BACKFACE_ID

Represents constant BACKFACE_ID.

BIG_HAND_ID

Represents constant BIG_HAND_ID.

BOLTS_ID

Represents constant BOLTS_ID.

BOLT_FRAME_ID

Represents constant BOLT_FRAME_ID.

BOLT_HIGHLIGHT_ID

Represents constant BOLT_HIGHLIGHT_ID.

BOLT_ID

Represents constant BOLT_ID.

BOLT_SHADOW_ID

Represents constant BOLT_SHADOW_ID.

CCWARROW_MAJOR_MARKER

Represents constant CCWARROW_MAJOR_MARKER.

CCWARROW_MINOR_MARKER

Represents constant CCWARROW_MINOR_MARKER.

CIRCLE_MAJOR_MARKER

Represents constant CIRCLE_MAJOR_MARKER.

CIRCLE_MINOR_MARKER

Represents constant CIRCLE_MINOR_MARKER.

CWARROW_MAJOR_MARKER

Represents constant CWARROW_MAJOR_MARKER.

CWARROW_MINOR_MARKER

Represents constant CWARROW_MINOR_MARKER.

DECORATION_GROUP_ID

Represents constant DECORATION_GROUP_ID.

DECORATION_ID

Represents constant DECORATION_ID.

DefaultFormatStr

Represents constant DefaultFormatStr. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

DEFAULT_CLOCK_TEXT

Represents constant DEFAULT_CLOCK_TEXT.

DEFAULT_MAJOR_MARKER

Represents constant DEFAULT_MAJOR_MARKER.

DEFAULT_MINOR_MARKER

Represents constant DEFAULT_MINOR_MARKER.

DETAILLABEL_ID

Represents constant DETAILLABEL_ID.

DIAL_ID

Represents constant DIAL_ID.

DIAL_LIGHT_ID

Represents constant DIAL_LIGHT_ID.

DIAMOND_MAJOR_MARKER

Represents constant DIAMOND_MAJOR_MARKER.

DIAMOND_MINOR_MARKER

Represents constant DIAMOND_MINOR_MARKER.

FRAME_BEVEL_LOWER_ID

Represents constant FRAME_BEVEL_LOWER_ID.

FRAME_BEVEL_UPPER_ID

Represents constant FRAME_BEVEL_UPPER_ID.

FRAME_COLOR_ID

Represents constant FRAME_COLOR_ID.

FRAME_ID

Represents constant FRAME_ID.

FRAME_SHADOW_ID

Represents constant FRAME_SHADOW_ID.

GAUGELABELS_ID

Represents constant GAUGELABELS_ID.

GLASS_ID

Represents constant GLASS_ID.

GRADIENT_BACKFACE_BEVEL_LOWER_ID

Represents constant GRADIENT_BACKFACE_BEVEL_LOWER_ID.

GRADIENT_BACKFACE_BEVEL_UPPER_ID

Represents constant GRADIENT_BACKFACE_BEVEL_UPPER_ID.

GRADIENT_DARKEN_ID

Represents constant GRADIENT_DARKEN_ID.

GRADIENT_FRAME_BEVEL_LOWER_ID

Represents constant GRADIENT_FRAME_BEVEL_LOWER_ID.

GRADIENT_FRAME_BEVEL_UPPER_ID

Represents constant GRADIENT_FRAME_BEVEL_UPPER_ID.

GRADIENT_LIGHTEN_ID

Represents constant GRADIENT_LIGHTEN_ID.

HANDS_ID

Represents constant HANDS_ID.

INARROW_MAJOR_MARKER

Represents constant INARROW_MAJOR_MARKER.

INARROW_MINOR_MARKER

Represents constant INARROW_MINOR_MARKER.

KNOB_COLOR_ID

Represents constant KNOB_COLOR_ID.

KNOB_HIGHLIGHT_ID

Represents constant KNOB_HIGHLIGHT_ID.

KNOB_ID

Represents constant KNOB_ID.

LABELS_ID

Represents constant LABELS_ID.

LITTLE_HAND_ID

Represents constant LITTLE_HAND_ID.

MAINLABEL_ID

Represents constant MAINLABEL_ID.

MAJOR_MARKERS_ID

Represents constant MAJOR_MARKERS_ID.

MARKERS_AND_LABELS_ID

Represents constant MARKERS_AND_LABELS_ID.

MARKERS_ID

Represents constant MARKERS_ID.

MEASUREMENT_LABELS_ID

Represents constant MEASUREMENT_LABELS_ID.

MINOR_MARKERS_ID

Represents constant MINOR_MARKERS_ID.

OUTARROW_MAJOR_MARKER

Represents constant OUTARROW_MAJOR_MARKER.

OUTARROW_MINOR_MARKER

Represents constant OUTARROW_MINOR_MARKER.

ROTARY_KNOB_ID

Represents constant ROTARY_KNOB_ID.

SVG_RESOURCE_NAME

Represents constant SVG_RESOURCE_NAME.

TEXT_CIRCLE_ID

Represents constant TEXT_CIRCLE_ID.

THIN_HAND_ID

Represents constant THIN_HAND_ID.

Create(TComponent)

Initializes a new instance of the TRSCustomCircularGauge class. (Overrides RS.Impact.Instruments.TRSSVGCustomInstrument.Create(TComponent).)

Destroy

Represents the destructor of the TRSCustomCircularGauge class. (Overrides RSSVGControl.TRSSVGControl.Destroy.)

AbsoluteMatrix

Returns the combined transformation matrix for the control. This is the control's transformation matrix multiplied by all parent IRSGPControl control's transformation matrices. (Inherited from RSSVGControl.TRSSVGControl.)

ActiveSVGElement

Specifies the dynamic element in the SVG, the part that will be changing often. The ActiveSVGElement is not buffered when painting as it is assumed it will be changing. Set the ActiveSVGElement to tell the control which element or group of elements need to be redrawn every paint event.

The non-active svg elements are rendered either to the     Background or     Foreground Buffer.

Align

Represents property Align. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Anchors

Represents property Anchors. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

AutoSize

Represents property AutoSize. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

BackfaceColor

Specifies the color of the inner face of the gauge. Use this property to change the backface.

Background

Contains the static background of the SVG compared to the   ActiveSVGElement, i.e. the SVG elements that are rendered behind the ActiveSVGElement. The Background and Foreground are painted once from the SVG. When elements in the ActiveSVGElement group change, the Background and Foreground are not rendered again, significantly speeding up painting of the entire SVG.

BigHandColor

Specifies the color of the big hand in the gauge. Change this property to change the color of the big hand/needle.

BigHandID

Specifies the unique ID of the SVG element used for the big hand (minute hand on a clock or the switch on the rotary dial)

BoltColor

Specifies the color of the 4 bolts or screws on the outside of the frame of the gauge. Use this property to change the color of the bolts (but not the inner head)

Buffered

Specifies whether to draw the SVG to a backbuffer and then copy that image to the canvas (default) or to draw directly on the canvas

Set the Buffered property to false to draw directly on the image canvas. This is generally not recommended, however, it may look better on mobile devices

Caption

Specifies the caption for the gauge. This is the large text label in the upper middle of the gauge.

CaptionFont

Specifies the font to use when drawing the   Caption and   DetailText of the gauge. The font specifies the font family, style, and size of the font to use for the Caption. The font specifies everything but the size of the font to use for the DetailText.

Constraints

Represents property Constraints. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Decoration

Defines the shape to use as a decoration for the instrument. The decoration can be pre-defined paths or a custom path. Use   DecorationFillColor and   DecorationStrokeColor to customize the colors of the decoration. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

DecorationFillColor

Represents property DecorationFillColor.

DecorationID

Specifies the ID of the element in the SVG that contains the   Decoration for the instrument. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

DecorationPath

Provides access to the path data for the decoration. If the Decoration element does not exist in the SVG, this property does nothing and returns nil.

DecorationStrokeColor

Represents property DecorationStrokeColor.

DefaultCaption

Specifies the default   Caption property value for the gauge. If the Caption property does not equal this value, it will be stored when streaming out a form.

DefaultDetailText

Specifies the default   DetailText property value for the gauge. If the DetailText property does not equal this value, it will be stored when streaming out a form.

DefaultHands

Specifies the default Hands property value for the gauge. If the Hands property does not equal this value, it will be stored when streaming out a form.

DefaultMax

Defines the Default Maximum value. When you set the RS.Impact.Instruments.TRSCustomCircularGauge.Max value at design-time, and the Max value does not equal this value, it will be stored in the form.

DefaultMin

Defines the Default Minimum value. When you set the RS.Impact.Instruments.TRSCustomCircularGauge.Min value at design-time, and the Min value does not equal this value, it will be stored in the form.

DefaultValue

Defines the Default Value. When you set the   Value property at design-time, and the Value does not equal this default value, it will be stored in the form.

Design

Use the Design property to quickly switch between detailed and simpler versions of the instrument. The simple option removes extra detail (such as bevels, glass look, shadows, bolts or screws, etc) in the gauge to provide a more basic and faster to draw version of the gauge.

The Design and EnableGradients properties are holistic-type properties which rapidly change the entire look of the instrument.

DetailText

Specifies the text to use for the detail text in the gauge. This is the small text in the lower middle of the gauge.

DragCursor

Represents property DragCursor. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

DragKind

Represents property DragKind. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

DragMode

Represents property DragMode. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

EnableActions

Controls whether the user can click on the gague to take some action

Enabled

Represents property Enabled. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

EnableGradients

Use the EnableGradients property to remove gradients from the gauge and use solid colors instead. This option improves speed when drawing the component, and gives gauges a generally flatter look.

The Design and EnableGradients properties are holistic-type properties which rapidly change the entire look of the instrument.

Font

Specifies the font to use when drawing the outer labels of the gauge. The colors of the labels is specified with the LabelsFillColor and LabelsStrokeColor properties.

Foreground

Contains the static foreground of the SVG compared to the   ActiveSVGElement, i.e. the SVG elements that are rendered in front of the ActiveSVGElement. The Background and Foreground are painted once from the SVG. When elements in the ActiveSVGElement group change, the Background and Foreground are not rendered again, significantly speeding up painting of the entire SVG.

FormatStr

Defines the format of floating point numbers that are displayed in text elements within the gauge. Change this property to change how numbers are displayed (e.g., significant digits) (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

FrameColor

Specifies the color of the outer frame of the gauge. Use this property to change the color of the frame

Hands

Specifies which hands or needles to display for the gauge.

The big hand is the minute hand in clocks, the needle in a compass, the speed in speedometers, and the 1000-foot increments in an altimeter. It is also the switch in the rotary dial.

The little hand is the hour hand in clocks and the 10000-foot increments in an altimeter.

The long, thin hand is the second hand in clocks and the 100-foot increments in an altimeter.

Height

Represents property Height. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

KnobColor

Specifies the color of the knob or cover in the exact middle of the gauge that covers the pivot points for the hands. Use this property to change the color of the knob

Labels

Provides the labels for the outside edge of the gauge. The Labels property is automatically filled by the object. However, override the Labels values to change the text for the outside labels.

Each line represents one labels. Extra lines are ignored. Any missing lines are treated as empty strings

LabelsFillColor

Specifies the fill color of the outer RS.Impact.Instruments.TRSCustomCircularGauge.Labels on the gauge. Use this property to change the fill color of the labels.

LabelsStrokeColor

Specifies the stroke, or pen, color of the outer RS.Impact.Instruments.TRSCustomCircularGauge.Labels on the gauge. Use this property to change the stroke color of the labels.

LightColor

Specifies the color of the light for the instrument. Change the light color to give the instrument a slight color cast.

LittleHandColor

Specifies the color of the little hand in the gauge. Change this property to change the color of the little hand/needle.

MajorMarker

Defines the shape of the major markers. If the marker is gmCustom, the gauge will use whatever shape is in the MajorMarkerPath property.

MajorMarkerPath

Specifies the path or shape to use for the major marker, i.e., the tick marks on the outside of the gauge.

MajorMarkers

Specifies the number of major markers to draw on the outside of the gauge. The class duplicates and rotates the   MajorMarkerPath to create the large markers on the outside of the gauge. The markers are drawn between the   StartAngle and the   StopAngle.

MajorMarkersColor

Specifies the color of the major markers, or the large tick marks, on the outer part of the face of the gauge. Use this property to change the fill color of the major markers.

Matrix

Returns the transformation matrix of the control (Inherited from RSSVGControl.TRSSVGControl.)

Max

Defines the maximum range for the gauge.

Min and Max define the range for the gauge. The     Value property will be constrained to be within this range. In addition, the     Labels property will be filled with numeric values between     Min and     Max based on the FormatStr formatting.

Min

Defines the minimum range for the gauge.

Min and Max define the range for the gauge. The     Value property will be constrained to be within this range. In addition, the     Labels property will be filled with numeric values between     Min and     Max based on the FormatStr formatting.

MinorMarker

Defines the shape of the minor markers. If the marker is gmCustom, the gauge will use whatever shape is in the MinorMarkerPath property.

MinorMarkerPath

Specifies the path or shape to use for the minor marker, i.e., the tick marks on the outside of the gauge.

MinorMarkers

Specifies the number of minor markers to draw between the major markers on the outside of the gauge. The class duplicates and rotates the   MinorMarkerPath to create the small markers on the outside of the gauge.

MinorMarkersColor

Specifies the color of the minor markers, or the small tick marks, on the outer part of the face of the gauge. Use this property to change the fill color of the minor markers.

NeedBuffers

Controls whether the Background and Foreground need to be rendered again in the Buffered paint process. Set the NeedBuffers property to True to force the buffers to be redrawn at the next paint event. (Inherited from RSSVGControl.TRSSVGControl.)

OnChange

Occurs when the instrument has been modified. Use the OnChange event to respond to changes. Note that BeginUpdate/EndUpdate can delay change events until the last matching EndUpdate method is called. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnClick

Represents property OnClick. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnContextPopup

Represents property OnContextPopup. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnDblClick

Represents property OnDblClick. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnDragDrop

Represents property OnDragDrop. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnDragOver

Represents property OnDragOver. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnDrawing

Occurs just before drawing the current element and its children. The event fires after the canvas brush, pen, font, clipping, etc are set up but before the actual drawing. (Inherited from RSSVGControl.TRSSVGControl.)

OnDrawn

Occurs just after a SVG element is drawn. The event fires after drawing the current element and its children but before the canvas is returned to its initial state. (Inherited from RSSVGControl.TRSSVGControl.)

OnEndDock

Represents property OnEndDock. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnEndDrag

Represents property OnEndDrag. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnGesture

Represents property OnGesture. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnMouseActivate

Represents property OnMouseActivate. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnMouseDown

Represents property OnMouseDown. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnMouseEnter

Represents property OnMouseEnter. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnMouseLeave

Represents property OnMouseLeave. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnMouseMove

Represents property OnMouseMove. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnMouseUp

Represents property OnMouseUp. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnPaint

Represents property OnPaint. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnPainting

Represents property OnPainting. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnStartDock

Represents property OnStartDock. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

OnStartDrag

Represents property OnStartDrag. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Opacity

Represents property Opacity. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

ParentShowHint

Represents property ParentShowHint. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Parts

Specifies the visible parts of the gauge. Use the Parts property to configure which parts of the instrument that IMPACT should draw.

PopupMenu

Represents property PopupMenu. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Quality

Controls the quality of the RSSVGControl.TRSSVGControl.Buffered painting of the SVG image. The value of quality can vary between 1 (low quality) to 8 (very high quality).

ShadowColor

Returns the color to use for shadows in the instrument. This color is calculated from the RS.Impact.Instruments.TRSSVGCustomInstrument.LightColor property. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

ShowHint

Represents property ShowHint. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

StartAngle

Specifies the angle in degrees where the first major marker should be drawn.

The StartAngle and StopAngle properties specify the range on the gauge of where to draw major markers and labels.

StopAngle

Specifies the angle in degrees where the last major marker should be drawn.

The StartAngle and StopAngle properties specify the range on the gauge of where to draw major markers and labels.

Stretch

Defines if the control draws the SVG stretched to the complete bounds of the control (True) or draws the SVG to the maximum dimensions while respecting the aspect ratio of the SVG (False). (Inherited from RSSVGControl.TRSSVGControl.)

SVG

Contains the SVG that paints the appearance of the control. The control changes the SVG elements based on requirements of the control. For example, a descendant control could change a specific element's fill and stroke based on a Color property change. (Inherited from RSSVGControl.TRSSVGControl.)

ThinHandColor

Specifies the color of the long, thin hand in the gauge. Change this property to change the color of the thin hand/needle.

Time

Specifies the current time and/or date of the clock

Touch

Represents property Touch. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Transform

Specifies the overall transformation to apply to the instrument image. For no transformation, set the Matrix to the RSIdentityMatrix (Inherited from RSSVGControl.TRSSVGControl.)

UpdateCount

Tracks the number of BeginUpdate calls with unmatching EndUpdate calls, i.e., if UpdateCount is greater than 0, the code is between BeginUpdate and EndUpdate and should not signal a change event. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Value

Specifies the current value of the gauge (e.g, the speed, altitude, etc)

Visible

Represents property Visible. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

Width

Represents property Width. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

AfterConstruction

Represents method AfterConstruction. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

BeginUpdate

Prevents the updating of the instrument until the   EndUpdate method is called.
 
BeginUpdate prevents the screen from being repainted and OnChange events being triggered when instrument properties are changed. Use BeginUpdate to prevent screen repaints and to speed processing time while modifying the instrument.
 
Note: Calls to BeginUpdate are cumulative; for every call to BeginUpdate there must be a corresponding call to EndUpdate. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

ChangeGradientColor(TSVGCustomGradient,TSVGColor,Boolean)

Overloaded.  Attempts to modify a gradient color scheme to a similar color scheme using NewColor, i.e., if a gradient has 3 gradient stops of dark gray, gray, white and the NewColor is Red, the method will try to change the gradient to red, lighter red, and white.

The FromFirst parameter specifies if the first or the last gradient stop is the base color to replace. The base color is replaced with the NewColor unchanged. All other gradient stops are modified from the base color.

ChangeGradientColor(TSVGCustomGradient,TSVGColor,Integer)

Overloaded.  Attempts to modify a gradient color scheme to a similar color scheme using NewColor, i.e., if a gradient has 3 gradient stops of dark gray, gray, white and the NewColor is Red, the method will try to change the gradient to red, lighter red, and white.

The BaseColorIndex parameter specifies if which gradient stop is the base color to replace. The base color is replaced with the NewColor unchanged. All other gradient stops are modified from the base color.

DoEnableGradient(String,String,Boolean,TSVGColor,Boolean)

Helper method for changing a SVG element's color between a gradient or a solid color.

The IsEnabled parameter specifies whether to set the element to the gradient or the solid color.

The IsBrush parameter specifies whether to change the element's brush or pen properties.

DoEnableGradients(Boolean)

This method enables or disables gradients in the SVG for the instrument.

Descendant classes override this method to respond to     EnableGradients property changes.

DoInitializeGauge

Initializes the SVG gauge or instrument from the class properties, i.e., apply the properties to the SVG.

Descendant classes override this method to initialize the SVG that draws the gauge with their properties.

DoOnChange

Triggers the   OnChange event (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

DoPaint

Represents method DoPaint. (Inherited from RSSVGControl.TRSSVGControl.)

DoUpdateCaptionFont

Updates the font for the RS.Impact.Instruments.TRSCustomCircularGauge.Caption and the RS.Impact.Instruments.TRSCustomCircularGauge.DetailText based on the RS.Impact.Instruments.TRSCustomCircularGauge.CaptionFont changes.

DoUpdateDesign

Updates the SVG design of the instrument to simple or detailed based on Design property.

Descendant classes override this method to modify the SVG in response to     Design property changes. Simple designs usually mean making some extra element's invisible.

DoUpdateElement(String,Single)

Updates the rotation angle for the SVG element specified by ElementID. This is the method that rotates the clock hands or the compass needle.

DoUpdateFont

Updates the font for the labels on the outside of the gauge based on RS.Impact.Instruments.TRSCustomCircularGauge.Font property changes.

DoUpdateLight

Updates colors of SVG elements based on changes in the LightColor property.

Descendant classes can override this method to provide a color cast to the SVG based on     LightColor changes.

DoUpdateParts

Update the parts of the SVG based on changes to the Parts property.

Descendant classes override this method to show or hide different elements in the SVG based on Parts property changes.

EnabledChanged

This method is called when the Enabled property changes. The SVG colors are rendered in grayscale when the control is disabled. (Inherited from RSSVGControl.TRSSVGControl.)

EndUpdate

Re-enables screen repainting and change events that were turned off with the   BeginUpdate method.
 
Use the EndUpdate method to enable screen updating after BeginUpdate has been called. Calls to BeginUpdate are cumulative, so calling EndUpdate will only update the instrument if every other call to BeginUpdate has already been matched by a call to EndUpdate.
 
 (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

FontChanged(TObject)

This method is called when the Font or CaptionFont is changed. This method calls the DoUpdateFont or DoUpdateCaptionFont method to update the correct elements of the gauge.

GetAbsoluteMatrix

Returns the combined transformation matrix for the control. This is the control's transformation matrix multiplied by all parent IRSGPControl control's transformation matrices. (Inherited from RSSVGControl.TRSSVGControl.)

GetClosestMajorMarker(Single)

Returns the index of the closest major marker to the specified 0-360 degree angle.

GetDefaultLabels

Returns the default multi-line string (separated by #13#10) for the outside labels of the gauge

GetDrawRect

Returns the rectangle where the SVG should be drawn. This is dependent on the current stretch value, the control's width and height, and the SVG's width and height. (Inherited from RSSVGControl.TRSSVGControl.)

GetMarkerData(TMarker,Boolean)

Returns the path data that define the shape of major (IsSmall = False) or minor (IsSmall = True) markers

GetMatrix

Returns the transformation matrix of the control (Inherited from RSSVGControl.TRSSVGControl.)

GetOpacity

Returns the Opacity of the control (Inherited from RSSVGControl.TRSSVGControl.)

GetShapeRect(TObject,TRSRect)

Returns the rectangle for the control (Inherited from RSSVGControl.TRSSVGControl.)

GetSVGResourceName

Returns the name of the resource that contains the SVG. The class uses this name to load the embedded SVG from a resource. (Overrides RS.Impact.Instruments.TRSSVGCustomInstrument.GetSVGResourceName.)

InitializeGauge

Initializes the SVG gauge or instrument from the class properties, i.e., apply the properties to the SVG.

This method calls the     DoInitializeGauge method to actually initialize the SVG based on the class properties. It is recommended that descendant classes override that method to respond to initialization requests.

This method ensures that the buffers get updated and the control is repainted.

InitializeHands

Shows or hides the SVG elements that represent the Hands based on their presence in the   Hands property set.

InitializeLabels

Initializes the text elements that represent the labels on the outside of the gauge. The text elements are initialized with values from the   Labels property.

InitializeMarkerPaths

Initializes   MajorMarkerPath and   MinorMarkerPath properties based on the   MajorMarker and   MinorMarker enumerated values

InitializeMarkers

Creates the major and minor markers around the gauge based on the number of   MajorMarkers and the number of   MinorMarkers between them. The   StartAngle and   StopAngle properties control where the markers start and end on the circle. The shape of the markers depend on the   MajorMarkerPath and   MinorMarkerPath properties.

InitializeNumberLabels

Initializes the labels on the outside of the gauge with numbers based on the   Min and   Max properties and how many   MajorMarkers have been specified.

IsBuffered

Returns True if the instrument should be drawn to a offscreen bitmap (Inherited from RSSVGControl.TRSSVGControl.)

IsUpdating

Returns true if the instrument is being updated (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

LabelsChanged(TObject)

This method is called when the RS.Impact.Instruments.TRSCustomCircularGauge.Labels property changes. This method responds to Labels changes by calling the RS.Impact.Instruments.TRSCustomCircularGauge.InitializeLabels method to update label elements in the gauge.

LoadSVGProperties

Initializes local properties from the SVG. Descendant classes override this method to initialize their properties (such as FrameColor) from elements in the SVG. (Overrides RS.Impact.Instruments.TRSSVGCustomInstrument.LoadSVGProperties.)

LoadSVGResource(string)

Load the SVG from an embedded resource. This method initializes the   ActiveSVGElement property and should be used to initialize any control fields (such as colors) that are dependant on the values in the SVG. (Overrides RSSVGControl.TRSSVGControl.LoadSVGResource(String).)

MarkersChanged(TObject)

This method is called when the RS.Impact.Instruments.TRSCustomCircularGauge.MajorMarkerPath or RS.Impact.Instruments.TRSCustomCircularGauge.MinorMarkerPath property are changed and the underlying gauge elements need to be updated. The method calls the RS.Impact.Instruments.TRSCustomCircularGauge.InitializeMarkers method to update markers based on their new shape.

ObjectChanged(TObject)

This method is called when an object property (such as Font) has changed and the control needs to respond to the change. (Inherited from RSSVGControl.TRSSVGControl.)

Resize

Represents method Resize. (Inherited from RSSVGControl.TRSSVGControl.)

RestoreGradientColor(TSVGCustomGradient)

Restores the gradient stop colors from the tags of the SVG elements, previously saved using   SaveGradientColor. (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

SaveGradientColor(TSVGCustomGradient)

Stores gradient stop colors in the tags of the SVG elements. This allows restoring the gradient stop colors without reloading the svg (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

SetOpacity(Single)

Sets the opacity of the control. If Opacity is less than 1, then the SVG is displayed semi- transparent. If Opacity is 0, then the SVG is not displayed.
 (Inherited from RSSVGControl.TRSSVGControl.)

UpdateBuffers

Updates the   Foreground and   Background buffers with the non active elements of the SVG. (Inherited from RSSVGControl.TRSSVGControl.)

UpdateDecoration

Updates the shape of the decoration (   DecorationPath) based on changes to the   Decoration property. (Overrides RS.Impact.Instruments.TRSSVGCustomInstrument.UpdateDecoration.)

UpdateDecorationFill

Updates the   Decoration fill color in the gauge (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

UpdateDecorationStroke

Updates the   Decoration stroke color in the gauge (Inherited from RS.Impact.Instruments.TRSSVGCustomInstrument.)

UpdateDesign

Updates the design of the gauge based on the     Design property. Simpler designs hide elements in the SVG while detailed designs show all elements of the SVG.

This method calls the     DoUpdateDesign method to actually change the SVG based on the Design property. It is recommended that descendant classes override DoUpdateDesign method to respond to design changes.

This method ensures that the buffers get updated and the control is repainted.

UpdateGradients

This method enables or disables gradients in the SVG for the instrument based on     EnableGradients property changes.

This method calls the     DoEnableGradients method to actually enable/disable gradients in the SVG. It is recommended that descendant classes override that method to enable/disable the gradients.

This method ensures that the buffers get updated and the control is repainted.

UpdateHands

Updates the orientation of the   Hands based on the   Value property.

UpdateLight

Updates colors of SVG elements based on changes in the LightColor property.

Descendant classes can override this method to provide a color cast to the SVG based on     LightColor changes.

This method calls the     DoUpdateLight method to actually perform any color changes in the SVG. It is recommended that descendant classes override that method to do the actual changes.

This method ensures that the buffers get updated and the control is repainted.

UpdateNumbers

This method updates any text elements that display numbers in the gauge. This method is called when the     FormatStr property changes so that the class can respond to new formatting for numbers.

Descendant classes should override this method to update any text elements with numbers

UpdateParts

Update the parts of the SVG based on changes to the Parts property.

Descendant classes override this method to show or hide different elements in the SVG based on Parts property changes.

This method calls the     DoUpdateParts method to actually perform any changes to the SVG. It is recommended that descendant classes override that method to do the actual changes.

This method ensures that the buffers get updated and the control is repainted.

UpdateTime

Updates the orientation of the   Hands based on the   Time property.