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bgralayers.pas
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bgralayers.pas
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{ ***************************************************************************
* *
* This file is part of BGRABitmap library which is distributed under the *
* modified LGPL. *
* *
* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
* for details about the copyright. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* *
************************* BGRABitmap library ******************************
- Drawing routines with transparency and antialiasing with Lazarus.
Offers also various transforms.
- These routines allow to manipulate 32bit images in BGRA format or RGBA
format (depending on the platform).
- This code is under modified LGPL (see COPYING.modifiedLGPL.txt).
This means that you can link this library inside your programs for any purpose.
Only the included part of the code must remain LGPL.
- If you make some improvements to this library, please notify here:
http://www.lazarus.freepascal.org/index.php/topic,12037.0.html
********************* Contact : Circular at operamail.com *******************
******************************* CONTRIBUTOR(S) ******************************
- Edivando S. Santos Brasil | [email protected]
(Compatibility with FPC ($Mode objfpc/delphi) and delphi VCL 11/2018)
***************************** END CONTRIBUTOR(S) *****************************}
Unit BGRALayers;
{$i bgrabitmap.inc}{$H+}{$H+}
{$IFDEF FPC}
{$MODESWITCH ADVANCEDRECORDS}
{$ENDIF}
interface
uses
Classes, SysUtils, Types, BGRATypes, BGRABitmapTypes, {$IFNDEF FPC}GraphType, SyncObjs, {$ENDIF} BGRABitmap, BGRAGraphics,
BGRAMemDirectory, BGRATransform, {$IFDEF OBJ}fgl{$ELSE}generics.collections{$ENDIF}, BGRALayerOriginal;
type
TBGRACustomLayeredBitmap = class;
TBGRACustomLayeredBitmapClass = class of TBGRACustomLayeredBitmap;
{ TBGRALayerOriginalEntry }
TBGRALayerOriginalEntry = record
Guid: TGuid;
Instance: TBGRALayerCustomOriginal;
class operator{$IFDEF OBJ}={$ELSE}Equal{$ENDIF}(const AEntry1,AEntry2: TBGRALayerOriginalEntry): boolean;
end;
TBGRALayerOriginalList = {$IFDEF OBJ}specialize TFPGList{$ELSE}TList{$ENDIF}<TBGRALayerOriginalEntry>;
TBGRALayeredBitmap = class;
TBGRALayeredBitmapClass = class of TBGRALayeredBitmap;
TBGRALayeredBitmapSaveToStreamProc = procedure(AStream: TStream; ALayers: TBGRACustomLayeredBitmap);
TBGRALayeredBitmapLoadFromStreamProc = procedure(AStream: TStream; ALayers: TBGRACustomLayeredBitmap);
TBGRALayeredBitmapCheckStreamProc = function(AStream: TStream): boolean;
{ TBGRACustomLayeredBitmap }
TBGRACustomLayeredBitmap = class(TGBRACustomGraphic)
private
FFrozenRange: array of record
firstLayer,lastLayer: integer;
image: TBGRABitmap;
linearBlend: boolean;
end;
FLinearBlend: boolean;
FMemDirectory: TMemDirectory;
FMemDirectoryOwned: boolean;
function GetDefaultBlendingOperation: TBlendOperation;
function GetHasMemFiles: boolean;
function GetLinearBlend: boolean;
procedure SetLinearBlend(AValue: boolean);
protected
function GetNbLayers: integer; virtual; abstract;
function GetMemDirectory: TMemDirectory;
function GetBlendOperation(Layer: integer): TBlendOperation; virtual; abstract;
function GetLayerVisible(layer: integer): boolean; virtual; abstract;
function GetLayerOpacity(layer: integer): byte; virtual; abstract;
function GetLayerName(layer: integer): string; virtual;
function GetLayerOffset(layer: integer): TPoint; virtual;
function GetLayerFrozenRange(layer: integer): integer;
function GetLayerFrozen(layer: integer): boolean; virtual;
function GetLayerUniqueId(layer: integer): integer; virtual;
function GetLayerOriginal({%H-}layer: integer): TBGRALayerCustomOriginal; virtual;
function GetLayerOriginalMatrix({%H-}layer: integer): TAffineMatrix; virtual;
function GetLayerOriginalGuid({%H-}layer: integer): TGuid; virtual;
function GetTransparent: Boolean; override;
function GetEmpty: boolean; override;
procedure SetWidth(Value: Integer); override;
procedure SetHeight(Value: Integer); override;
procedure SetMemDirectory(AValue: TMemDirectory);
procedure SetTransparent(Value: Boolean); override;
procedure SetLayerFrozen(layer: integer; AValue: boolean); virtual;
function RangeIntersect(first1,last1,first2,last2: integer): boolean;
procedure RemoveFrozenRange(index: integer);
function ContainsFrozenRange(first,last: integer): boolean;
public
procedure SaveToFile(const filenameUTF8: string); override;
procedure SaveToStream(Stream: TStream); override;
procedure SaveToStreamAs(Stream: TStream; AExtension: string);
constructor Create; override;
destructor Destroy; override;
function ToString: {$IFDEF FPC}ansistring{$ELSE}string{$ENDIF}; override;
function GetLayerBitmapDirectly(layer: integer): TBGRABitmap; virtual;
function GetLayerBitmapCopy(layer: integer): TBGRABitmap; virtual; abstract;
function ComputeFlatImage(ASeparateXorMask: boolean = false): TBGRABitmap; overload;
function ComputeFlatImage(firstLayer, lastLayer: integer; ASeparateXorMask: boolean = false): TBGRABitmap; overload;
function ComputeFlatImage(ARect: TRect; ASeparateXorMask: boolean = false): TBGRABitmap; overload;
function ComputeFlatImage(ARect: TRect; firstLayer, lastLayer: integer; ASeparateXorMask: boolean = false): TBGRABitmap; overload;
procedure Draw(ACanvas: TCanvas; const Rect: TRect); overload; override;
procedure Draw(Canvas: TCanvas; x,y: integer); overload;
procedure Draw(Canvas: TCanvas; x,y: integer; firstLayer, lastLayer: integer); overload;
procedure Draw(Dest: TBGRABitmap; x,y: integer); overload;
procedure Draw(Dest: TBGRABitmap; x,y: integer; ASeparateXorMask: boolean); overload;
procedure Draw(Dest: TBGRABitmap; AX,AY: integer; firstLayer, lastLayer: integer; ASeparateXorMask: boolean = false); overload;
procedure FreezeExceptOneLayer(layer: integer); overload;
procedure Freeze(firstLayer, lastLayer: integer); overload;
procedure Freeze; overload;
procedure Unfreeze; overload;
procedure Unfreeze(layer: integer); overload;
procedure Unfreeze(firstLayer, lastLayer: integer); overload;
procedure NotifyLoaded; virtual;
procedure NotifySaving; virtual;
property NbLayers: integer read GetNbLayers;
property BlendOperation[layer: integer]: TBlendOperation read GetBlendOperation;
property LayerVisible[layer: integer]: boolean read GetLayerVisible;
property LayerOpacity[layer: integer]: byte read GetLayerOpacity;
property LayerName[layer: integer]: string read GetLayerName;
property LayerOffset[layer: integer]: TPoint read GetLayerOffset;
property LayerFrozen[layer: integer]: boolean read GetLayerFrozen;
property LayerUniqueId[layer: integer]: integer read GetLayerUniqueId;
property LayerOriginal[layer: integer]: TBGRALayerCustomOriginal read GetLayerOriginal;
property LayerOriginalMatrix[layer: integer]: TAffineMatrix read GetLayerOriginalMatrix;
property LayerOriginalGuid[layer: integer]: TGuid read GetLayerOriginalGuid;
property LinearBlend: boolean read GetLinearBlend write SetLinearBlend; //use linear blending unless specified
property DefaultBlendingOperation: TBlendOperation read GetDefaultBlendingOperation;
property MemDirectory: TMemDirectory read GetMemDirectory write SetMemDirectory;
property MemDirectoryOwned: boolean read FMemDirectoryOwned write FMemDirectoryOwned;
property HasMemFiles: boolean read GetHasMemFiles;
end;
TOriginalRenderStatus = (orsNone, orsDraft, orsProof);
TOriginalChangeEvent = procedure (ASender: TObject; AOriginal: TBGRALayerCustomOriginal) of object;
TBGRALayerInfo = record
UniqueId: integer;
Name: string;
x, y: integer;
Source: TBGRABitmap;
blendOp: TBlendOperation;
Opacity: byte;
Visible: boolean;
Owner: boolean;
Frozen: boolean;
OriginalMatrix: TAffineMatrix;
OriginalRenderStatus: TOriginalRenderStatus;
OriginalGuid: TGuid;
end;
{ TBGRALayeredBitmap }
TBGRALayeredBitmap = class(TBGRACustomLayeredBitmap)
private
FNbLayers: integer;
FLayers: array of TBGRALayerInfo;
FOriginalChange: TOriginalChangeEvent;
FWidth,FHeight: integer;
FOriginals: TBGRALayerOriginalList;
FOriginalEditor: TBGRAOriginalEditor;
FOriginalEditorOriginal: TBGRALayerCustomOriginal;
protected
function GetWidth: integer; override;
function GetHeight: integer; override;
function GetNbLayers: integer; override;
function GetBlendOperation(Layer: integer): TBlendOperation; override;
function GetLayerVisible(layer: integer): boolean; override;
function GetLayerOpacity(layer: integer): byte; override;
function GetLayerOffset(layer: integer): TPoint; override;
function GetLayerName(layer: integer): string; override;
function GetLayerFrozen(layer: integer): boolean; override;
function GetLayerUniqueId(layer: integer): integer; override;
function GetLayerOriginal(layer: integer): TBGRALayerCustomOriginal; override;
function GetLayerOriginalMatrix(layer: integer): TAffineMatrix; override;
function GetLayerOriginalGuid(layer: integer): TGuid; override;
function GetLayerOriginalRenderStatus(layer: integer): TOriginalRenderStatus;
function GetOriginalCount: integer;
function GetOriginalByIndex(AIndex: integer): TBGRALayerCustomOriginal;
procedure SetBlendOperation(Layer: integer; op: TBlendOperation);
procedure SetLayerVisible(layer: integer; AValue: boolean);
procedure SetLayerOpacity(layer: integer; AValue: byte);
procedure SetLayerOffset(layer: integer; AValue: TPoint);
procedure SetLayerName(layer: integer; AValue: string);
procedure SetLayerFrozen(layer: integer; AValue: boolean); override;
procedure SetLayerUniqueId(layer: integer; AValue: integer);
procedure SetLayerOriginalMatrix(layer: integer; AValue: TAffineMatrix);
procedure SetLayerOriginalGuid(layer: integer; const AValue: TGuid);
procedure SetLayerOriginalRenderStatus(layer: integer; AValue: TOriginalRenderStatus);
procedure FindOriginal(AGuid: TGuid;
out ADir: TMemDirectory;
out AClass: TBGRALayerOriginalAny);
procedure StoreOriginal(AOriginal: TBGRALayerCustomOriginal);
procedure OriginalChange(ASender: TObject);
public
procedure LoadFromFile(const filenameUTF8: string); override;
procedure LoadFromStream(stream: TStream); override;
procedure SetSize(AWidth, AHeight: integer); virtual;
procedure Clear; override;
procedure ClearOriginals;
procedure RemoveLayer(index: integer);
procedure InsertLayer(index: integer; fromIndex: integer);
procedure Assign(ASource: TBGRACustomLayeredBitmap; ASharedLayerIds: boolean = false); overload;
function MoveLayerUp(index: integer): integer;
function MoveLayerDown(index: integer): integer;
function AddLayer(Source: TBGRABitmap; Opacity: byte = 255): integer; overload;
function AddLayer(Source: TBGRABitmap; Position: TPoint; BlendOp: TBlendOperation; Opacity: byte = 255; Shared: boolean = false): integer; overload;
function AddLayer(Source: TBGRABitmap; Position: TPoint; Opacity: byte = 255): integer; overload;
function AddLayer(Source: TBGRABitmap; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayer(AName: string; Source: TBGRABitmap; Opacity: byte = 255): integer; overload;
function AddLayer(AName: string; Source: TBGRABitmap; Position: TPoint; BlendOp: TBlendOperation; Opacity: byte = 255; Shared: boolean = false): integer; overload;
function AddLayer(AName: string; Source: TBGRABitmap; Position: TPoint; Opacity: byte = 255): integer; overload;
function AddLayer(AName: string; Source: TBGRABitmap; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddSharedLayer(Source: TBGRABitmap; Opacity: byte = 255): integer; overload;
function AddSharedLayer(Source: TBGRABitmap; Position: TPoint; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddSharedLayer(Source: TBGRABitmap; Position: TPoint; Opacity: byte = 255): integer; overload;
function AddSharedLayer(Source: TBGRABitmap; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayerFromFile(AFileName: string; Opacity: byte = 255): integer; overload;
function AddLayerFromFile(AFileName: string; Position: TPoint; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayerFromFile(AFileName: string; Position: TPoint; Opacity: byte = 255): integer; overload;
function AddLayerFromFile(AFileName: string; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddOwnedLayer(ABitmap: TBGRABitmap; Opacity: byte = 255): integer; overload;
function AddOwnedLayer(ABitmap: TBGRABitmap; Position: TPoint; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddOwnedLayer(ABitmap: TBGRABitmap; Position: TPoint; Opacity: byte = 255): integer; overload;
function AddOwnedLayer(ABitmap: TBGRABitmap; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayerFromOriginal(AGuid: TGuid; Opacity: byte = 255): integer; overload;
function AddLayerFromOriginal(AGuid: TGuid; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayerFromOriginal(AGuid: TGuid; Matrix: TAffineMatrix; Opacity: byte = 255): integer; overload;
function AddLayerFromOriginal(AGuid: TGuid; Matrix: TAffineMatrix; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayerFromOwnedOriginal(AOriginal: TBGRALayerCustomOriginal; Opacity: byte = 255): integer; overload;
function AddLayerFromOwnedOriginal(AOriginal: TBGRALayerCustomOriginal; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddLayerFromOwnedOriginal(AOriginal: TBGRALayerCustomOriginal; Matrix: TAffineMatrix; Opacity: byte = 255): integer; overload;
function AddLayerFromOwnedOriginal(AOriginal: TBGRALayerCustomOriginal; Matrix: TAffineMatrix; BlendOp: TBlendOperation; Opacity: byte = 255): integer; overload;
function AddOriginal(AOriginal: TBGRALayerCustomOriginal; AOwned: boolean = true): integer;
function RemoveOriginal(AOriginal: TBGRALayerCustomOriginal): boolean;
procedure DeleteOriginal(AIndex: integer);
procedure NotifyLoaded; override;
procedure NotifySaving; override;
procedure RenderLayerFromOriginal(layer: integer; ADraft: boolean = false);
procedure RenderOriginalsIfNecessary(ADraft: boolean = false);
procedure RemoveUnusedOriginals;
destructor Destroy; override;
constructor Create; overload; override;
constructor Create(AWidth, AHeight: integer); overload; virtual;
function GetLayerBitmapDirectly(layer: integer): TBGRABitmap; override;
function GetLayerBitmapCopy(layer: integer): TBGRABitmap; override;
function GetLayerIndexFromId(AIdentifier: integer): integer;
function Duplicate(ASharedLayerIds: boolean = false): TBGRALayeredBitmap;
function ProduceLayerUniqueId: integer;
procedure RotateCW;
procedure RotateCCW;
procedure HorizontalFlip;
procedure VerticalFlip;
procedure Resample(AWidth, AHeight: integer; AResampleMode: TResampleMode; AFineResampleFilter: TResampleFilter = rfLinear);
procedure SetLayerBitmap(layer: integer; ABitmap: TBGRABitmap; AOwned: boolean);
function DrawEditor(ADest: TBGRABitmap; ALayerIndex: integer; X, Y: Integer; APointSize: single): TRect; overload;
function DrawEditor(ADest: TBGRABitmap; ALayerIndex: integer; AMatrix: TAffineMatrix; APointSize: single): TRect; overload;
procedure MouseMove(Shift: TShiftState; X, Y: Single; out ACursor: TOriginalEditorCursor);
procedure MouseDown(RightButton: boolean; Shift: TShiftState; X, Y: Single; out ACursor: TOriginalEditorCursor);
procedure MouseUp(RightButton: boolean; Shift: TShiftState; X, Y: Single; out ACursor: TOriginalEditorCursor);
property Width : integer read GetWidth;
property Height: integer read GetHeight;
property NbLayers: integer read GetNbLayers;
property BlendOperation[layer: integer]: TBlendOperation read GetBlendOperation write SetBlendOperation;
property LayerVisible[layer: integer]: boolean read GetLayerVisible write SetLayerVisible;
property LayerOpacity[layer: integer]: byte read GetLayerOpacity write SetLayerOpacity;
property LayerName[layer: integer]: string read GetLayerName write SetLayerName;
property LayerBitmap[layer: integer]: TBGRABitmap read GetLayerBitmapDirectly;
property LayerOffset[layer: integer]: TPoint read GetLayerOffset write SetLayerOffset;
property LayerUniqueId[layer: integer]: integer read GetLayerUniqueId write SetLayerUniqueId;
property LayerOriginal[layer: integer]: TBGRALayerCustomOriginal read GetLayerOriginal;
property LayerOriginalGuid[layer: integer]: TGuid read GetLayerOriginalGuid write SetLayerOriginalGuid;
property LayerOriginalMatrix[layer: integer]: TAffineMatrix read GetLayerOriginalMatrix write SetLayerOriginalMatrix;
property LayerOriginalRenderStatus[layer: integer]: TOriginalRenderStatus read GetLayerOriginalRenderStatus write SetLayerOriginalRenderStatus;
function IndexOfOriginal(AGuid: TGuid): integer; overload;
function IndexOfOriginal(AOriginal: TBGRALayerCustomOriginal): integer; overload;
property OriginalCount: integer read GetOriginalCount;
property Original[AIndex: integer]: TBGRALayerCustomOriginal read GetOriginalByIndex;
property OnOriginalChange: TOriginalChangeEvent read FOriginalChange write FOriginalChange;
end;
TAffineMatrix = BGRABitmapTypes.TAffineMatrix;
function BGRALayerOriginalEntry(AGuid: TGuid): TBGRALayerOriginalEntry; overload;
function BGRALayerOriginalEntry(AInstance: TBGRALayerCustomOriginal): TBGRALayerOriginalEntry; overload;
procedure RegisterLayeredBitmapWriter(AExtensionUTF8: string; AWriter: TBGRALayeredBitmapClass);
procedure RegisterLayeredBitmapReader(AExtensionUTF8: string; AReader: TBGRACustomLayeredBitmapClass);
function TryCreateLayeredBitmapWriter(AExtensionUTF8: string): TBGRALayeredBitmap;
function TryCreateLayeredBitmapReader(AExtensionUTF8: string): TBGRACustomLayeredBitmap;
var
LayeredBitmapSaveToStreamProc : TBGRALayeredBitmapSaveToStreamProc;
LayeredBitmapLoadFromStreamProc : TBGRALayeredBitmapLoadFromStreamProc;
LayeredBitmapCheckStreamProc: TBGRALayeredBitmapCheckStreamProc;
type
TOnLayeredBitmapLoadStartProc = procedure(AFilenameUTF8: string) of object;
TOnLayeredBitmapLoadProgressProc = procedure(APercentage: integer) of object;
TOnLayeredBitmapLoadedProc = procedure() of object;
procedure OnLayeredBitmapLoadFromStreamStart;
procedure OnLayeredBitmapLoadStart(AFilenameUTF8: string);
procedure OnLayeredBitmapLoadProgress(APercentage: integer);
procedure OnLayeredBitmapLoaded();
procedure RegisterLoadingHandler(AStart: TOnLayeredBitmapLoadStartProc; AProgress: TOnLayeredBitmapLoadProgressProc;
ADone: TOnLayeredBitmapLoadedProc);
procedure UnregisterLoadingHandler(AStart: TOnLayeredBitmapLoadStartProc; AProgress: TOnLayeredBitmapLoadProgressProc;
ADone: TOnLayeredBitmapLoadedProc);
function Equal(const AGuid1, AGuid2: TGuid): boolean;
implementation
uses BGRAUTF8, BGRABlend, BGRAMultiFileType;
const
OriginalsDirectory = 'originals';
var
OnLayeredBitmapLoadStartProc: TOnLayeredBitmapLoadStartProc;
OnLayeredBitmapLoadProgressProc: TOnLayeredBitmapLoadProgressProc;
OnLayeredBitmapLoadedProc: TOnLayeredBitmapLoadedProc;
var
NextLayerUniqueId: {$IFDEF FPC}cardinal;{$ELSE}Int64;{$ENDIF}
LayeredBitmapReaders: array of record
extension: string;
theClass: TBGRACustomLayeredBitmapClass;
end;
LayeredBitmapWriters: array of record
extension: string;
theClass: TBGRALayeredBitmapClass;
end;
function Equal(const AGuid1, AGuid2: TGuid): boolean;
begin
result := CompareMem(@AGuid1, @AGuid2, sizeof(TGuid));
end;
{ TBGRALayerOriginalEntry }
class operator TBGRALayerOriginalEntry.{$IFDEF OBJ}={$ELSE}Equal{$ENDIF}(const AEntry1,
AEntry2: TBGRALayerOriginalEntry): boolean;
begin
result := Equal(AEntry1.Guid, AEntry2.Guid);
end;
function BGRALayerOriginalEntry(AGuid: TGuid): TBGRALayerOriginalEntry;
begin
result.Guid := AGuid;
result.Instance := nil;
end;
function BGRALayerOriginalEntry(AInstance: TBGRALayerCustomOriginal): TBGRALayerOriginalEntry;
begin
result.Guid := AInstance.Guid;
result.Instance := AInstance;
end;
{ TBGRALayeredBitmap }
function TBGRALayeredBitmap.GetLayerUniqueId(layer: integer): integer;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
Result:= FLayers[layer].UniqueId;
end;
function TBGRALayeredBitmap.GetLayerOriginal(layer: integer): TBGRALayerCustomOriginal;
var
idxOrig: Integer;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if Equal(FLayers[layer].OriginalGuid, {=} GUID_NULL) then exit(nil);
idxOrig := IndexOfOriginal(FLayers[layer].OriginalGuid);
if idxOrig = -1 then exit(nil);
result := Original[idxOrig];
end;
end;
function TBGRALayeredBitmap.GetLayerOriginalMatrix(layer: integer
): TAffineMatrix;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
result := FLayers[layer].OriginalMatrix;
end;
function TBGRALayeredBitmap.GetLayerOriginalGuid(layer: integer): TGuid;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
result := FLayers[layer].OriginalGuid;
end;
function TBGRALayeredBitmap.GetLayerOriginalRenderStatus(layer: integer
): TOriginalRenderStatus;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
result := FLayers[layer].OriginalRenderStatus;
end;
procedure TBGRALayeredBitmap.SetLayerUniqueId(layer: integer; AValue: integer);
var i: integer;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
for i := 0 to NbLayers-1 do
if (i <> layer) and (FLayers[layer].UniqueId = AValue) then
raise Exception.Create('Another layer has the same identifier');
FLayers[layer].UniqueId := AValue;
end;
end;
procedure TBGRALayeredBitmap.SetLayerOriginalMatrix(layer: integer;
AValue: TAffineMatrix);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if AffMatrixEqual(FLayers[layer].OriginalMatrix, {=} AValue) then exit;
FLayers[layer].OriginalMatrix := AValue;
if not Equal(FLayers[layer].OriginalGuid, {<>} GUID_NULL) then
begin
FLayers[layer].OriginalRenderStatus := orsNone;
Unfreeze(layer);
end;
end;
end;
procedure TBGRALayeredBitmap.SetLayerOriginalGuid(layer: integer;
const AValue: TGuid);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if Equal(FLayers[layer].OriginalGuid, {=} AValue) then exit;
FLayers[layer].OriginalGuid := AValue;
if not Equal(AValue, {<>} GUID_NULL) and (IndexOfOriginal(AValue) <> -1) then
begin
FLayers[layer].OriginalRenderStatus := orsNone;
Unfreeze(layer);
end;
end;
end;
procedure TBGRALayeredBitmap.SetLayerOriginalRenderStatus(layer: integer;
AValue: TOriginalRenderStatus);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if FLayers[layer].OriginalRenderStatus = AValue then exit;
FLayers[layer].OriginalRenderStatus := AValue;
Unfreeze(layer);
end;
end;
procedure TBGRALayeredBitmap.FindOriginal(AGuid: TGuid; out
ADir: TMemDirectory; out AClass: TBGRALayerOriginalAny);
var
c: String;
begin
ADir := nil;
AClass := nil;
if HasMemFiles then
begin
ADir := MemDirectory.FindPath(OriginalsDirectory+'/'+GUIDToString(AGuid));
if ADir <> nil then
begin
c := ADir.RawStringByFilename['class'];
AClass := FindLayerOriginalClass(c);
end;
end;
end;
procedure TBGRALayeredBitmap.StoreOriginal(AOriginal: TBGRALayerCustomOriginal);
var
dir, subdir: TMemDirectory;
storage: TBGRAMemOriginalStorage;
begin
dir := MemDirectory.Directory[MemDirectory.AddDirectory(OriginalsDirectory)];
subdir := dir.Directory[dir.AddDirectory(GUIDToString(AOriginal.Guid))];
storage := TBGRAMemOriginalStorage.Create(subdir);
try
AOriginal.SaveToStorage(storage);
storage.RawString['class'] := AOriginal.StorageClassName;
finally
storage.Free;
end;
end;
procedure TBGRALayeredBitmap.OriginalChange(ASender: TObject);
var
i: Integer;
orig: TBGRALayerCustomOriginal;
begin
orig := TBGRALayerCustomOriginal(ASender);
for i := 0 to NbLayers-1 do
if Equal(LayerOriginalGuid[i], {=} orig.Guid) then
LayerOriginalRenderStatus[i] := orsNone;
if Assigned(FOriginalChange) then
FOriginalChange(self, orig);
end;
function TBGRALayeredBitmap.GetOriginalCount: integer;
begin
if Assigned(FOriginals) then
result := FOriginals.Count;
end;
function TBGRALayeredBitmap.GetOriginalByIndex(AIndex: integer
): TBGRALayerCustomOriginal;
var
dir: TMemDirectory;
c: TBGRALayerOriginalAny;
guid: TGuid;
storage: TBGRAMemOriginalStorage;
begin
if (AIndex < 0) or (AIndex >= OriginalCount) then
raise ERangeError.Create('Index out of bounds');
result := FOriginals[AIndex].Instance;
guid := FOriginals[AIndex].Guid;
// load original on the fly
if (result = nil) and not Equal(guid, {<>} GUID_NULL) then
begin
FindOriginal(guid, dir, c);
if not Assigned(dir) then
raise exception.Create('Original directory not found');
if not Assigned(c) then
raise exception.Create('Original class not found (it can be registered with the RegisterLayerOriginal function)');
result := c.Create;
result.Guid := guid;
storage := TBGRAMemOriginalStorage.Create(dir);
try
result.LoadFromStorage(storage);
finally
storage.Free;
end;
FOriginals[AIndex] := BGRALayerOriginalEntry(result);
result.OnChange:= {$IFDEF OBJ}@{$ENDIF}OriginalChange;
end;
end;
function TBGRALayeredBitmap.GetWidth: integer;
begin
Result:= FWidth;
end;
function TBGRALayeredBitmap.GetHeight: integer;
begin
Result:= FHeight;
end;
function TBGRALayeredBitmap.GetNbLayers: integer;
begin
Result:= FNbLayers;
end;
function TBGRALayeredBitmap.GetBlendOperation(Layer: integer): TBlendOperation;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
Result:= FLayers[layer].blendOp;
end;
function TBGRALayeredBitmap.GetLayerVisible(layer: integer): boolean;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
Result:= FLayers[layer].Visible;
end;
function TBGRALayeredBitmap.GetLayerOpacity(layer: integer): byte;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
Result:= FLayers[layer].Opacity;
end;
function TBGRALayeredBitmap.GetLayerOffset(layer: integer): TPoint;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
with FLayers[layer] do
Result:= Point(x,y);
end;
function TBGRALayeredBitmap.GetLayerName(layer: integer): string;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if not FLayers[layer].Owner and (FLayers[layer].Source <> nil) then
Result := FLayers[layer].Source.Caption
else
Result:= FLayers[layer].Name;
if Result = '' then
result := inherited GetLayerName(layer);
end;
end;
function TBGRALayeredBitmap.GetLayerFrozen(layer: integer): boolean;
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
Result:= FLayers[layer].Frozen;
end;
procedure TBGRALayeredBitmap.SetBlendOperation(Layer: integer;
op: TBlendOperation);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if FLayers[layer].blendOp <> op then
begin
FLayers[layer].blendOp := op;
Unfreeze(layer);
end;
end;
end;
procedure TBGRALayeredBitmap.SetLayerVisible(layer: integer; AValue: boolean);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if FLayers[layer].Visible <> AValue then
begin
FLayers[layer].Visible := AValue;
Unfreeze(layer);
end;
end;
end;
procedure TBGRALayeredBitmap.SetLayerOpacity(layer: integer; AValue: byte);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if FLayers[layer].Opacity <> AValue then
begin
FLayers[layer].Opacity := AValue;
Unfreeze(layer);
end;
end;
end;
procedure TBGRALayeredBitmap.SetLayerOffset(layer: integer; AValue: TPoint);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if (FLayers[layer].x <> AValue.x) or
(FLayers[layer].y <> AValue.y) then
begin
if not Equal(FLayers[layer].OriginalGuid, {<>} GUID_NULL) then
raise exception.Create('The offset of the layer is computed from an original. You can change it by changing the layer original matrix.');
FLayers[layer].x := AValue.x;
FLayers[layer].y := AValue.y;
Unfreeze(layer);
end;
end;
end;
procedure TBGRALayeredBitmap.SetLayerName(layer: integer; AValue: string);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
begin
if not FLayers[layer].Owner and (FLayers[layer].Source <> nil) then
FLayers[layer].Source.Caption := AValue
else
FLayers[layer].Name := AValue;
end;
end;
procedure TBGRALayeredBitmap.SetLayerFrozen(layer: integer; AValue: boolean);
begin
if (layer < 0) or (layer >= NbLayers) then
raise Exception.Create('Index out of bounds')
else
FLayers[layer].Frozen := AValue;
end;
function TBGRALayeredBitmap.GetLayerBitmapDirectly(layer: integer): TBGRABitmap;
begin
if (layer < 0) or (layer >= NbLayers) then
result := nil
else
begin
if FLayers[layer].OriginalRenderStatus = orsNone then
RenderLayerFromOriginal(layer, true);
Result:= FLayers[layer].Source;
end;
end;
procedure TBGRALayeredBitmap.LoadFromFile(const filenameUTF8: string);
var bmp: TBGRABitmap;
ext: string;
temp: TBGRACustomLayeredBitmap;
i: integer;
stream: TFileStreamUTF8;
begin
ext := UTF8LowerCase(ExtractFileExt(filenameUTF8));
for i := 0 to high(LayeredBitmapReaders) do
if '.'+LayeredBitmapReaders[i].extension = ext then
begin
temp := LayeredBitmapReaders[i].theClass.Create;
try
temp.LoadFromFile(filenameUTF8);
Assign(temp);
finally
temp.Free;
end;
exit;
end;
//when using "data" extension, simply deserialize
if (ext='.dat') or (ext='.data') then
begin
if Assigned(LayeredBitmapLoadFromStreamProc) then
begin
stream := TFileStreamUTF8.Create(filenameUTF8, fmOpenRead, fmShareDenyWrite);
try
LayeredBitmapLoadFromStreamProc(stream, self);
finally
stream.Free;
end;
end else
raise exception.Create('Enable layer deserialization by calling BGRAStreamLayers.RegisterStreamLayers');
end else
begin
bmp := TBGRABitmap.Create(filenameUTF8, True);
Clear;
SetSize(bmp.Width,bmp.Height);
AddOwnedLayer(bmp);
end;
end;
procedure TBGRALayeredBitmap.LoadFromStream(stream: TStream);
var bmp: TBGRABitmap;
begin
if Assigned(LayeredBitmapLoadFromStreamProc) then
begin
if not Assigned(LayeredBitmapCheckStreamProc) or
LayeredBitmapCheckStreamProc(stream) then
begin
LayeredBitmapLoadFromStreamProc(Stream, self);
exit;
end;
end;
bmp := TBGRABitmap.Create(stream);
Clear;
SetSize(bmp.Width,bmp.Height);
AddOwnedLayer(bmp);
end;
procedure TBGRALayeredBitmap.SetSize(AWidth, AHeight: integer);
begin
Unfreeze;
FWidth := AWidth;
FHeight := AHeight;
end;
procedure TBGRALayeredBitmap.Clear;
var i: integer;
begin
Unfreeze;
for i := NbLayers-1 downto 0 do
RemoveLayer(i);
MemDirectory := nil;
ClearOriginals;
end;
procedure TBGRALayeredBitmap.ClearOriginals;
var
i: Integer;
begin
if Assigned(FOriginals) then
begin
for i := 0 to OriginalCount-1 do
FOriginals[i].Instance.Free;
FreeAndNil(FOriginals);
end;
end;
procedure TBGRALayeredBitmap.RemoveLayer(index: integer);
var i: integer;
begin
if (index < 0) or (index >= NbLayers) then exit;
Unfreeze;
if FLayers[index].Owner then FLayers[index].Source.Free;
for i := index to FNbLayers-2 do
FLayers[i] := FLayers[i+1];
Dec(FNbLayers);
end;
procedure TBGRALayeredBitmap.InsertLayer(index: integer; fromIndex: integer);
var info: TBGRALayerInfo;
i: integer;
begin
if (index < 0) or (index > NbLayers) or (index = fromIndex) then exit;
if (fromIndex < 0) or (fromIndex >= NbLayers) then exit;
Unfreeze;
info := FLayers[fromIndex];
for i := fromIndex to FNbLayers-2 do
FLayers[i] := FLayers[i+1];
for i := FNbLayers-1 downto index+1 do
FLayers[i] := FLayers[i-1];
FLayers[index] := info;
end;
procedure TBGRALayeredBitmap.Assign(ASource: TBGRACustomLayeredBitmap; ASharedLayerIds: boolean);
var i,idx: integer;
begin
Clear;
SetSize(ASource.Width,ASource.Height);
LinearBlend:= ASource.LinearBlend;
for i := 0 to ASource.NbLayers-1 do
begin
idx := AddOwnedLayer(ASource.GetLayerBitmapCopy(i),ASource.LayerOffset[i],ASource.BlendOperation[i],ASource.LayerOpacity[i]);
LayerName[idx] := ASource.LayerName[i];
LayerVisible[idx] := ASource.LayerVisible[i];
if ASharedLayerIds and (ASource is TBGRALayeredBitmap) then
LayerUniqueId[idx] := TBGRALayeredBitmap(ASource).LayerUniqueId[idx];
end;
end;
function TBGRALayeredBitmap.MoveLayerUp(index: integer): integer;
begin
if (index >= 0) and (index <= NbLayers-2) then
begin
InsertLayer(index+1,index);
result := index+1;
end else
result := -1;
end;
function TBGRALayeredBitmap.MoveLayerDown(index: integer): integer;
begin
if (index > 0) and (index <= NbLayers-1) then
begin
InsertLayer(index-1,index);
result := index-1;
end else
result := -1;
end;
function TBGRALayeredBitmap.AddLayer(Source: TBGRABitmap; Opacity: byte
): integer;
begin
result := AddLayer(Source, Point(0,0), DefaultBlendingOperation, Opacity, False);
end;
function TBGRALayeredBitmap.AddLayer(Source: TBGRABitmap; Position: TPoint;
BlendOp: TBlendOperation; Opacity: byte; Shared: boolean): integer;
begin
result := AddLayer(Source.Caption,Source,Position,BlendOp,Opacity,Shared);
end;
function TBGRALayeredBitmap.AddLayer(Source: TBGRABitmap; Position: TPoint;
Opacity: byte): integer;
begin
result := AddLayer(Source,Position,DefaultBlendingOperation,Opacity);
end;
function TBGRALayeredBitmap.AddLayer(Source: TBGRABitmap;
BlendOp: TBlendOperation; Opacity: byte): integer;
begin
result := AddLayer(Source,Point(0,0),BlendOp,Opacity);
end;
function TBGRALayeredBitmap.AddLayer(AName: string; Source: TBGRABitmap;
Opacity: byte): integer;
begin
result := AddLayer(AName,Source,Point(0,0),Opacity);
end;
function TBGRALayeredBitmap.AddLayer(AName: string; Source: TBGRABitmap;
Position: TPoint; BlendOp: TBlendOperation; Opacity: byte; Shared: boolean): integer;
begin
if length(FLayers) = FNbLayers then
setlength(FLayers, length(FLayers)*2+1);
FLayers[FNbLayers].Name := AName;
FLayers[FNbLayers].X := Position.X;
FLayers[FNbLayers].Y := Position.Y;
FLayers[FNbLayers].blendOp := BlendOp;
FLayers[FNbLayers].Opacity := Opacity;
FLayers[FNbLayers].Visible := true;
FLayers[FNbLayers].Frozen := false;
FLayers[FNbLayers].UniqueId := ProduceLayerUniqueId;
FLayers[FNbLayers].OriginalMatrix := AffineMatrixIdentity;
FLayers[FNbLayers].OriginalRenderStatus := orsNone;
FLayers[FNbLayers].OriginalGuid := GUID_NULL;
if Shared then
begin
FLayers[FNbLayers].Source := Source;
FLayers[FNbLayers].Owner := false;
end else
begin
FLayers[FNbLayers].Source := Source.Duplicate as TBGRABitmap;
FLayers[FNbLayers].Owner := true;
end;
result := FNbLayers;
inc(FNbLayers);
if (FNbLayers = 1) and (FWidth = 0) and (FHeight = 0) and (Source <> nil) then
SetSize(Source.Width,Source.Height);
end;
function TBGRALayeredBitmap.AddLayer(AName: string; Source: TBGRABitmap;
Position: TPoint; Opacity: byte): integer;
begin
result := AddLayer(AName, Source, Position, DefaultBlendingOperation, Opacity);
end;
function TBGRALayeredBitmap.AddLayer(AName: string; Source: TBGRABitmap;
BlendOp: TBlendOperation; Opacity: byte): integer;
begin
result := AddLayer(AName, Source, Point(0,0), blendOp, Opacity);
end;
function TBGRALayeredBitmap.AddSharedLayer(Source: TBGRABitmap; Opacity: byte
): integer;
begin