TfpgValueBar

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

A ValueBar component.

Declaration

Source position: fpg_colorwheel.pas line 76

`type TfpgValueBar = class(TfpgWidget)`
`protected`
`FColorWheel: TfpgColorWheel;`
`FHue: LongInt;`
`FSaturation: double;`
`FValue: double;`
`FMarginWidth: LongInt;`
`FCursorHeight: LongInt;`
`FOnChange: TNotifyEvent;`
`procedure DrawCursor;`
`procedure SetMarginWidth();`
`procedure SetValue();`
`procedure SetCursorHeight();`
`function GetSelectedColor;`
`procedure Change;`
`function DrawWidth;`
`function DrawHeight;`
`function ValueFromY();`
`procedure DrawLine();`
`procedure HandlePaint; override;`
`procedure HandleLMouseDown(); override;`
`procedure HandleMouseMove(); override;`
`procedure HandleLMouseUp(); override;`
`public`
`constructor Create(); override;`
`procedure SetHS();`		Sets the Hue and Saturation values.
`published`
`property Align;`
`property BackgroundColor;`
`property Enabled;`
`property Value: double; [rw]`		Currently selected Value
`property SelectedColor: TfpgColor; [r]`		The selected HSV color but in TfpgColor format.
`property MarginWidth: LongInt; [rw]`		Margin width around the ValueBar.
`property CursorHeight: LongInt; [rw]`		The height of the selection cursor.
`property OnChange: TNotifyEvent; [rw]`		Event is triggered when a new color is selected.
`end;`

Inheritance

`TfpgValueBar`		A ValueBar component.
\|
`TfpgWidget`
?
`TObject`

Description

At runtime, this component draws a ValueBar. It allows the user to select the brightness (Value) color in the HSV colorspace. This components works with the TfpgColorWheel component to set the full HSV color values.