BGRABitmap

Unit BGRALayers

Description
Uses
Classes, Interfaces, Objects and Records
Functions and Procedures
Types
Constants
Variables

Description

Layered image, each layer being a TBGRABitmap or rendered from an original. It can handle SVG format, gradients and blend modes.

Uses

Overview

Classes, Interfaces, Objects and Records

Name Description
Class TBGRACustomLayeredBitmap Abstract class for storing a layered bitmap
Class TBGRALayeredBitmap Base implementation for a layered bitmap
Record TBGRALayerInfo Information about one layer
Record TBGRALayerOriginalEntry Entry for one original in a list of originals

Functions and Procedures

function BGRALayerOriginalEntry(AInstance: TBGRALayerCustomOriginal): TBGRALayerOriginalEntry;
function BGRALayerOriginalEntry(AGuid: TGuid): TBGRALayerOriginalEntry;
procedure OnLayeredBitmapLoaded;
procedure OnLayeredBitmapLoadFromStreamStart;
procedure OnLayeredBitmapLoadProgress(APercentage: integer);
procedure OnLayeredBitmapLoadStart(AFilenameUTF8: string);
procedure OnLayeredBitmapSaved;
procedure OnLayeredBitmapSaveProgress(APercentage: integer);
procedure OnLayeredBitmapSaveStart(AFilenameUTF8: string);
procedure OnLayeredBitmapSaveToStreamStart;
procedure RegisterLayeredBitmapReader(AExtensionUTF8: string; AReader: TBGRACustomLayeredBitmapClass);
procedure RegisterLayeredBitmapWriter(AExtensionUTF8: string; AWriter: TBGRALayeredBitmapClass);
procedure RegisterLoadingHandler(AStart: TOnLayeredBitmapLoadStartProc; AProgress: TOnLayeredBitmapLoadProgressProc; ADone: TOnLayeredBitmapLoadedProc);
procedure RegisterSavingHandler(AStart: TOnLayeredBitmapSaveStartProc; AProgress: TOnLayeredBitmapSaveProgressProc; ADone: TOnLayeredBitmapSavedProc);
function TryCreateLayeredBitmapReader(AExtensionUTF8: string): TBGRACustomLayeredBitmap;
function TryCreateLayeredBitmapWriter(AExtensionUTF8: string): TBGRALayeredBitmap;
procedure UnregisterLoadingHandler(AStart: TOnLayeredBitmapLoadStartProc; AProgress: TOnLayeredBitmapLoadProgressProc; ADone: TOnLayeredBitmapLoadedProc);
procedure UnregisterSavingHandler(AStart: TOnLayeredBitmapSaveStartProc; AProgress: TOnLayeredBitmapSaveProgressProc; ADone: TOnLayeredBitmapSavedProc);

Types

TAffineMatrix = BGRABitmapTypes.TAffineMatrix;
TBGRACustomLayeredBitmapClass = class of TBGRACustomLayeredBitmap;
TBGRALayeredBitmapCheckStreamProc = function(AStream: TStream): boolean;
TBGRALayeredBitmapClass = class of TBGRALayeredBitmap;
TBGRALayeredBitmapLoadFromStreamProc = procedure(AStream: TStream; ALayers: TBGRACustomLayeredBitmap);
TBGRALayeredBitmapSaveToStreamProc = procedure(AStream: TStream; ALayers: TBGRACustomLayeredBitmap);
TBGRALayerOriginalList = specialize TFPGList<TBGRALayerOriginalEntry>;
TEmbeddedOriginalChangeEvent = procedure (ASender: TObject; AOriginal: TBGRALayerCustomOriginal; var ADiff: TBGRAOriginalDiff) of object;
TEmbeddedOriginalEditingChangeEvent = procedure (ASender: TObject; AOriginal: TBGRALayerCustomOriginal) of object;
TEmbeddedOriginalLoadErrorEvent = procedure (ASender: TObject; AError: string; var ARaise: boolean) of object;
TLayeredActionProgressEvent = procedure(ASender: TObject; AProgressPercent: integer) of object;
TOnLayeredBitmapLoadedProc = procedure() of object;
TOnLayeredBitmapLoadProgressProc = procedure(APercentage: integer) of object;
TOnLayeredBitmapLoadStartProc = procedure(AFilenameUTF8: string) of object;
TOnLayeredBitmapSavedProc = procedure() of object;
TOnLayeredBitmapSaveProgressProc = procedure(APercentage: integer) of object;
TOnLayeredBitmapSaveStartProc = procedure(AFilenameUTF8: string) of object;
TOriginalRenderStatus = (...);

Constants

RenderTempSubDirectory = 'temp';

Variables

LayeredBitmapCheckStreamProc: TBGRALayeredBitmapCheckStreamProc;
LayeredBitmapLoadFromStreamProc: TBGRALayeredBitmapLoadFromStreamProc;
LayeredBitmapSaveToStreamProc: TBGRALayeredBitmapSaveToStreamProc;

Description

Functions and Procedures

function BGRALayerOriginalEntry(AInstance: TBGRALayerCustomOriginal): TBGRALayerOriginalEntry;

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function BGRALayerOriginalEntry(AGuid: TGuid): TBGRALayerOriginalEntry;

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procedure OnLayeredBitmapLoaded;

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procedure OnLayeredBitmapLoadFromStreamStart;

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procedure OnLayeredBitmapLoadProgress(APercentage: integer);

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procedure OnLayeredBitmapLoadStart(AFilenameUTF8: string);

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procedure OnLayeredBitmapSaved;

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procedure OnLayeredBitmapSaveProgress(APercentage: integer);

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procedure OnLayeredBitmapSaveStart(AFilenameUTF8: string);

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procedure OnLayeredBitmapSaveToStreamStart;

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procedure RegisterLayeredBitmapReader(AExtensionUTF8: string; AReader: TBGRACustomLayeredBitmapClass);

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procedure RegisterLayeredBitmapWriter(AExtensionUTF8: string; AWriter: TBGRALayeredBitmapClass);

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procedure RegisterLoadingHandler(AStart: TOnLayeredBitmapLoadStartProc; AProgress: TOnLayeredBitmapLoadProgressProc; ADone: TOnLayeredBitmapLoadedProc);

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procedure RegisterSavingHandler(AStart: TOnLayeredBitmapSaveStartProc; AProgress: TOnLayeredBitmapSaveProgressProc; ADone: TOnLayeredBitmapSavedProc);

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function TryCreateLayeredBitmapReader(AExtensionUTF8: string): TBGRACustomLayeredBitmap;

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function TryCreateLayeredBitmapWriter(AExtensionUTF8: string): TBGRALayeredBitmap;

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procedure UnregisterLoadingHandler(AStart: TOnLayeredBitmapLoadStartProc; AProgress: TOnLayeredBitmapLoadProgressProc; ADone: TOnLayeredBitmapLoadedProc);

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procedure UnregisterSavingHandler(AStart: TOnLayeredBitmapSaveStartProc; AProgress: TOnLayeredBitmapSaveProgressProc; ADone: TOnLayeredBitmapSavedProc);

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Types

TAffineMatrix = BGRABitmapTypes.TAffineMatrix;

An affine matrix contains three 2D vectors: the image of x, the image of y and the translation

TBGRACustomLayeredBitmapClass = class of TBGRACustomLayeredBitmap;

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TBGRALayeredBitmapCheckStreamProc = function(AStream: TStream): boolean;

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TBGRALayeredBitmapClass = class of TBGRALayeredBitmap;

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TBGRALayeredBitmapLoadFromStreamProc = procedure(AStream: TStream; ALayers: TBGRACustomLayeredBitmap);

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TBGRALayeredBitmapSaveToStreamProc = procedure(AStream: TStream; ALayers: TBGRACustomLayeredBitmap);

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TBGRALayerOriginalList = specialize TFPGList<TBGRALayerOriginalEntry>;

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TEmbeddedOriginalChangeEvent = procedure (ASender: TObject; AOriginal: TBGRALayerCustomOriginal; var ADiff: TBGRAOriginalDiff) of object;

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TEmbeddedOriginalEditingChangeEvent = procedure (ASender: TObject; AOriginal: TBGRALayerCustomOriginal) of object;

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TEmbeddedOriginalLoadErrorEvent = procedure (ASender: TObject; AError: string; var ARaise: boolean) of object;

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TLayeredActionProgressEvent = procedure(ASender: TObject; AProgressPercent: integer) of object;

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TOnLayeredBitmapLoadedProc = procedure() of object;

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TOnLayeredBitmapLoadProgressProc = procedure(APercentage: integer) of object;

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TOnLayeredBitmapLoadStartProc = procedure(AFilenameUTF8: string) of object;

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TOnLayeredBitmapSavedProc = procedure() of object;

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TOnLayeredBitmapSaveProgressProc = procedure(APercentage: integer) of object;

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TOnLayeredBitmapSaveStartProc = procedure(AFilenameUTF8: string) of object;

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TOriginalRenderStatus = (...);

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Values
  • orsNone
  • orsDraft
  • orsPartialDraft
  • orsProof
  • orsPartialProof

Constants

RenderTempSubDirectory = 'temp';

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Variables

LayeredBitmapCheckStreamProc: TBGRALayeredBitmapCheckStreamProc;

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LayeredBitmapLoadFromStreamProc: TBGRALayeredBitmapLoadFromStreamProc;

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LayeredBitmapSaveToStreamProc: TBGRALayeredBitmapSaveToStreamProc;

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