Class TBGRAFilterScanner

Fields

Unit

Declaration

type TBGRAFilterScanner = class(TBGRACustomScanner)

Description

Abstract class for a scanner that applies a filter

Hierarchy

IInterface
IBGRAScanner
TBGRACustomScanner
TBGRAFilterScanner

Overview

Methods

	`constructor Create(ASource: IBGRAScanner; AOffset: TPoint);`
	`function IsScanPutPixelsDefined: boolean; override;`
	`function ScanAt(X,Y: Single): TBGRAPixel; override;`
	`function ScanAtInteger(X,Y: integer): TBGRAPixel; override;`
	`function ScanNextPixel: TBGRAPixel; override;`
	`procedure ComputeFilter(ASource: IBGRAScanner; X,Y: Integer; ADest: PBGRAPixel; ACount: integer); virtual; abstract;`
	`procedure ScanMoveTo(X,Y: Integer); override;`
	`procedure ScanPutPixels(pdest: PBGRAPixel; count: integer; mode: TDrawMode); override;`
	`procedure ScanSkipPixels(ACount: integer); override;`

Properties

	`property AllowDirectRead: boolean read FAllowDirectRead write FAllowDirectRead;`
	`property Offset: TPoint read FOffset;`
	`property Source: IBGRAScanner read FSource;`

Description

Methods

	`constructor Create(ASource: IBGRAScanner; AOffset: TPoint);`
This item has no description.

	`function IsScanPutPixelsDefined: boolean; override;`
This item has no description.

	`function ScanAt(X,Y: Single): TBGRAPixel; override;`
This item has no description.

	`function ScanAtInteger(X,Y: integer): TBGRAPixel; override;`
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	`function ScanNextPixel: TBGRAPixel; override;`
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	`procedure ComputeFilter(ASource: IBGRAScanner; X,Y: Integer; ADest: PBGRAPixel; ACount: integer); virtual; abstract;`
This item has no description.

	`procedure ScanMoveTo(X,Y: Integer); override;`
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	`procedure ScanPutPixels(pdest: PBGRAPixel; count: integer; mode: TDrawMode); override;`
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	`procedure ScanSkipPixels(ACount: integer); override;`
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Properties

	`property AllowDirectRead: boolean read FAllowDirectRead write FAllowDirectRead;`
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	`property Offset: TPoint read FOffset;`
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	`property Source: IBGRAScanner read FSource;`
This item has no description.