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bgraimagelist.pas
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// SPDX-License-Identifier: LGPL-3.0-linking-exception
{ This component partialy solve problem with no alpha in lazarus GTK.
It is using BGRABitmap library for drawing icons.
originally written in 2011 by Krzysztof Dibowski dibowski at interia.pl
}
(******************************** CONTRIBUTOR(S) ******************************
- Edivando S. Santos Brasil | [email protected]
(Compatibility with delphi VCL 11/2018) { #note -oMaxM : VCL Compatibility? }
- Massimo Magnano
2024/12
Added Before/AfterDraw events (don't works with Widgetsets)
Added UseBGRADraw ( " )
Added Proportionally add methods
2025/01
Added Indexed image reading/writing and Load/SaveFile
***************************** END CONTRIBUTOR(S) *****************************)
unit BGRAImageList;
{$I bgracontrols.inc}
interface
uses
Classes, SysUtils, {$IFDEF FPC}LResources, LCLVersion, {$ENDIF} Controls, Graphics,
GraphType, BGRABitmap, BGRABitmapTypes, {%H-}ImgList;
{$IFDEF LCLgtk}
{ $DEFINE BGRA_DRAW}
{$ELSE}
{$IFDEF LCLgtk2}
{ $DEFINE BGRA_DRAW}
{$ENDIF}
{$ENDIF}
const
{ #note -oMaxM : redeclared because are not public consts }
SIG_LAZ1 = #1#0;
SIG_LAZ2 = 'li';
SIG_LAZ3 = 'Li';
SIG_LAZ4 = 'Lz';
SIG_D3 = 'IL';
sInvalidIndex = 'Invalid ImageList Index';
sInvalidFormat ='Invalid Stream Format Signature';
type
TImageListSignature = array[0..1] of char; { #note -oMaxM : redeclared because is not a public type }
{ TBGRAImageListResolution }
TBGRAImageListResolution = class(TDragImageListResolution)
protected
{$if lcl_fullversion>=4990000}
procedure ReadData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); virtual; overload;
procedure WriteData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); virtual; overload;
{$endif}
public
procedure BGRADraw(ACanvas: TCanvas; ARect: TRect; AIndex: Integer; AOverlay: TOverlay;
ADrawingStyle: TDrawingStyle; AImageType: TImageType;
ADrawEffect: TGraphicsDrawEffect; ABkColor, ABlendColor: TColor; AStretch: Boolean=False); virtual;
procedure Draw(ACanvas: TCanvas; AX, AY, AIndex: integer; ADrawingStyle: TDrawingStyle; AImageType: TImageType;
ADrawEffect: TGraphicsDrawEffect); override;
procedure DrawOverlay(ACanvas: TCanvas; AX, AY, AIndex: Integer; AOverlay: TOverlay; ADrawingStyle:
TDrawingStyle; AImageType: TImageType; ADrawEffect: TGraphicsDrawEffect); overload;
procedure StretchDrawOverlay(ACanvas: TCanvas; AIndex: Integer; ARect: TRect; AOverlay: TOverlay;
AEnabled: Boolean = True); virtual;
end;
{ TBGRAImageList }
TBGRAImageList = class;
//Return True whether the default draw should be called
TCustomImageListBeforeDraw= function (Sender: TBGRAImageList;
ACanvas: TCanvas; var ARect: TRect; var AIndex: Integer;
var ADrawingStyle: TDrawingStyle; var AImageType: TImageType;
var ADrawOverlay: Boolean; var AOverlay: TOverlay;
var ADrawEffect: TGraphicsDrawEffect): Boolean of object;
TCustomImageListAfterDraw= procedure (Sender: TBGRAImageList;
ACanvas: TCanvas; ARect: TRect; AIndex: Integer;
ADrawingStyle: TDrawingStyle; AImageType: TImageType;
ADrawOverlay: Boolean; AOverlay: TOverlay;
ADrawEffect: TGraphicsDrawEffect) of object;
{$if lcl_fullversion < 4990000}
TOverlaysArray = array[TOverlay] of Integer;
{$endif}
TBGRAImageList = class(TImageList)
private
rUseBGRADraw: Boolean;
FBGRA: TBGRABitmap;
FBmp: TBitmap;
procedure SetUseBGRADraw(AValue: Boolean);
protected
FOnBeforeDraw: TCustomImageListBeforeDraw;
FOnAfterDraw: TCustomImageListAfterDraw;
{$if lcl_fullversion<4990000}
{ #note -oMaxM : we keep our copy of the FOverlays array since it is declared private without any logic,
so derived classes cannot use it in any way also because there is no property to read them
see merged code freepascal.org/lazarus/lazarus!429
}
rOverlays: TOverlaysArray;
{$endif}
function GetResolution(AImageWidth: Integer): TBGRAImageListResolution;
function CreateEmptyBitmap(AImageWidth, AImageHeight: Integer;
AHorizAlign: TAlignment; AVertAlign: TTextLayout;
var imgRect: TRect): TBitmap;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function GetResolutionClass: TCustomImageListResolutionClass; override;
{$if lcl_fullversion>=4990000}
//Read AIndex image from Stream without read all the images
procedure ReadData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); virtual; overload;
procedure WriteData(AStream: TStream); override; overload;
procedure WriteData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); virtual; overload;
procedure LoadFromFile(const AFilename: string; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); overload;
procedure LoadFromFileUTF8(const AFilenameUTF8: string; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); overload;
procedure SaveToFile(const AFilename: string; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); overload;
procedure SaveToFileUTF8(const AFilenameUTF8: string; AIndex: Integer;
StartStreamPos: Int64=0; CalcPos: Boolean=True); overload;
{$else}
procedure Overlay(AIndex: Integer; AOverlay: TOverlay);
property Overlays: TOverlaysArray read rOverlays;
{$endif}
procedure LoadFromFile(const AFilename: string); overload;
procedure LoadFromFileUTF8(const AFilenameUTF8: string); overload;
procedure SaveToFile(const AFilename: string); overload;
procedure SaveToFileUTF8(const AFilenameUTF8: string); overload;
function CreateProportionalImage(AImage: TCustomBitmap;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap; overload;
function CreateProportionalImage(AImageFileName: String;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap; overload;
function CreateMaskImage(AImage: TCustomBitmap; MaskColor: TColor): TBitmap; overload;
function CreateMaskImage(AImageFileName: String; MaskColor: TColor): TBitmap; overload;
function CreateProportionalMaskImage(AImage: TCustomBitmap; MaskColor: TColor;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap; overload;
function CreateProportionalMaskImage(AImageFileName: String; MaskColor: TColor;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap; overload;
procedure StretchDrawOverlay(ACanvas: TCanvas; AIndex: Integer; ARect: TRect; AOverlay: TOverlay; AEnabled: Boolean = True);
function AddProportionally(Image: TCustomBitmap; Mask: TCustomBitmap=nil;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter): Integer; overload;
function AddProportionally(AImageFileName: String; AMaskFileName: String='';
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter): Integer; overload;
function AddMaskedProportionally(Image: TCustomBitmap; MaskColor: TColor;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter): Integer; overload;
function AddMaskedProportionally(AImageFileName: String; MaskColor: TColor;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter): Integer; overload;
procedure InsertProportionally(AIndex: Integer; AImage: TCustomBitmap; AMask: TCustomBitmap=nil;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure InsertProportionally(AIndex: Integer; AImageFileName: String; AMaskFileName: String='';
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure InsertMaskedProportionally(AIndex: Integer; AImage: TCustomBitmap; MaskColor: TColor;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure InsertMaskedProportionally(AIndex: Integer; AImageFileName: String; MaskColor: TColor;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure ReplaceProportionally(AIndex: Integer; AImage: TCustomBitmap; AMask: TCustomBitmap=nil;
const AllResolutions: Boolean = True;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure ReplaceProportionally(AIndex: Integer; AImageFileName: String; AMaskFileName: String='';
const AllResolutions: Boolean = True;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure ReplaceMaskedProportionally(AIndex: Integer; AImage: TCustomBitmap; MaskColor: TColor;
const AllResolutions: Boolean = True;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
procedure ReplaceMaskedProportionally(AIndex: Integer; AImageFileName: String; MaskColor: TColor;
const AllResolutions: Boolean = True;
AHorizAlign: TAlignment=taCenter; AVertAlign: TTextLayout=tlCenter); overload;
published
property UseBGRADraw: Boolean read rUseBGRADraw write SetUseBGRADraw;
{ #note -oMaxM : This Events don't works inside Widgetsets that use the imagelist handle
but only if you draw directly on the Canvas using ImageList Draw methods }
property OnBeforeDraw: TCustomImageListBeforeDraw read FOnBeforeDraw write FOnBeforeDraw;
property OnAfterDraw: TCustomImageListAfterDraw read FOnAfterDraw write FOnAfterDraw;
end;
{$IFDEF FPC}procedure Register;{$ENDIF}
implementation
uses BGRAUTF8, WSImgList;
const
EffectMap: array[Boolean] of TGraphicsDrawEffect = (
gdeDisabled,
gdeNormal
);
{$IFDEF FPC}
procedure Register;
begin
RegisterComponents('BGRA Controls', [TBGRAImageList]);
end;
{$ENDIF}
{ TBGRAImageListResolution }
{$if lcl_fullversion>=4990000}
procedure TBGRAImageListResolution.ReadData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
var
oStreamPos: Int64;
Signature: TImageListSignature;
datPos: Integer;
begin
if (AIndex<0) or (AIndex>=Count) then raise EInvalidOperation.Create(SInvalidIndex);
oStreamPos:= AStream.Position;
try
AStream.Position:= StartStreamPos;
datPos:= AIndex * Width * Height;
if CalcPos
then begin
AStream.Read(Signature, SizeOf(Signature));
if Signature = SIG_LAZ3
then begin
AStream.Position:= oStreamPos+SizeOf(Signature)+(3*4)+(datPos*SizeOf(FData[0]));
AStream.Read(FData[datPos], Width * Height * SizeOf(FData[0]));
end
else raise Exception.Create(sInvalidFormat+' '+Signature);
end
else AStream.Read(FData[datPos], Width * Height * SizeOf(FData[0]));
if HandleAllocated
then TWSCustomImageListResolutionClass(WidgetSetClass).Replace(Self, AIndex, @FData[datPos]);
finally
AStream.Position:= oStreamPos;
end;
end;
procedure TBGRAImageListResolution.WriteData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
var
oStreamPos: Int64;
Signature: TImageListSignature;
datPos: Integer;
begin
if (AIndex<0) or (AIndex>=Count) then raise EInvalidOperation.Create(SInvalidIndex);
oStreamPos:= AStream.Position;
try
AStream.Position:= StartStreamPos;
datPos:= AIndex * Width * Height;
if CalcPos
then begin
AStream.Read(Signature, SizeOf(Signature));
if Signature = SIG_LAZ3
then begin
WriteLRSInteger(AStream, Count);
AStream.Position:= oStreamPos+SizeOf(Signature)+(3*4)+(datPos*SizeOf(FData[0]));
AStream.Write(FData[datPos], Width * Height * SizeOf(FData[0]));
end
else raise Exception.Create(sInvalidFormat+' '+Signature);
end
else AStream.Write(FData[datPos], Width * Height * SizeOf(FData[0]));
finally
AStream.Position:= oStreamPos;
end;
end;
{$endif}
{ Problem with no alpha is only on GTK so on Windows we use default drawing }
procedure TBGRAImageListResolution.BGRADraw(ACanvas: TCanvas; ARect: TRect; AIndex: Integer; AOverlay: TOverlay;
ADrawingStyle: TDrawingStyle; AImageType: TImageType;
ADrawEffect: TGraphicsDrawEffect; ABkColor, ABlendColor: TColor; AStretch: Boolean);
var
bmpDrawEffect: TGraphicsDrawEffect;
OverlayI: Integer;
begin
if (AIndex < 0) or (AIndex >= Count) then Exit;
ReferenceNeeded;
with TBGRAImageList(ImageList) do
begin
if (FBGRA = nil) then FBGRA:= TBGRABitmap.Create;
if (FBmp = nil) then FBmp:= TBitmap.Create;
{*** BGRA Drawing *** }
if (ADrawEffect = gdeDisabled)
then bmpDrawEffect:= gdeNormal
else bmpDrawEffect:= ADrawEffect;
{$IFDEF FPC}
GetBitmap(AIndex, FBmp, bmpDrawEffect);
{$ELSE}
GetBitmapRaw(AIndex, FBmp, bmpDrawEffect);
{$ENDIF}
FBGRA.Assign(FBmp);
if (AOverlay > 0) then
begin
OverlayI := Overlays[AOverlay];
if (OverlayI in [0..Count-1]) then
begin
{$IFDEF FPC}
GetBitmap(OverlayI, FBmp, bmpDrawEffect);
{$ELSE}
GetBitmapRaw(OverlayI, FBmp, bmpDrawEffect);
{$ENDIF}
FBmp.Mask(ImageList.BkColor);
FBGRA.PutImage(0, 0, FBmp, dmLinearBlend);
end;
end;
if (ADrawEffect = gdeDisabled) then BGRAReplace(FBGRA, FBGRA.FilterGrayscale);
if (ADrawingStyle in [dsFocus, dsSelected]) then FBGRA.ApplyGlobalOpacity(128);
if AStretch
then FBGRA.Draw(ACanvas, ARect, (ABkColor <> clNone))
else FBGRA.Draw(ACanvas, ARect.Left, ARect.Top, (ABkColor <> clNone));
end;
end;
procedure TBGRAImageListResolution.Draw(ACanvas: TCanvas; AX, AY, AIndex: integer; ADrawingStyle: TDrawingStyle;
AImageType: TImageType; ADrawEffect: TGraphicsDrawEffect);
var
vRect: TRect;
vIndex: Integer;
vDrawingStyle: TDrawingStyle;
vImageType: TImageType;
vDrawOverlay,
stdDraw: Boolean;
vOverlay: TOverlay;
vDrawEffect: TGraphicsDrawEffect;
rImageList: TBGRAImageList;
begin
if (AIndex < 0) or (AIndex >= Count) then Exit;
ReferenceNeeded;
rImageList:= TBGRAImageList(ImageList);
//Copy Parameters to vars
vRect:= Rect(AX, AY, Width, Height);
vIndex:= AIndex;
vDrawingStyle:= ADrawingStyle;
vImageType:= AImageType;
vDrawOverlay:= False;
vOverlay:= 0;
vDrawEffect:= ADrawEffect;
stdDraw:= True;
if Assigned(rImageList.FOnBeforeDraw)
then stdDraw:= rImageList.FOnBeforeDraw(rImageList, ACanvas, vRect, vIndex, vDrawingStyle, vImageType,
vDrawOverlay, vOverlay, vDrawEffect);
if stdDraw then
begin
if not(vDrawOverlay) then vOverlay:= 0;
if rImageList.rUseBGRADraw
then BGRADraw(ACanvas, vRect, vIndex, vOverlay, vDrawingStyle, vImageType, vDrawEffect,
rImageList.BkColor, rImageList.BlendColor)
else begin
if vDrawOverlay
then inherited DrawOverlay(ACanvas, vRect.Left, vRect.Top, vIndex, vOverlay, vDrawingStyle, vImageType, vDrawEffect)
else inherited Draw(ACanvas, vRect.Left, vRect.Top, vIndex, vDrawingStyle, vImageType, vDrawEffect);
end;
end;
if Assigned(rImageList.FOnAfterDraw)
then rImageList.FOnAfterDraw(rImageList, ACanvas, vRect, vIndex, vDrawingStyle, vImageType,
vDrawOverlay, vOverlay, vDrawEffect);
end;
procedure TBGRAImageListResolution.DrawOverlay(ACanvas: TCanvas; AX, AY, AIndex: Integer; AOverlay: TOverlay;
ADrawingStyle: TDrawingStyle; AImageType: TImageType; ADrawEffect: TGraphicsDrawEffect);
var
vRect: TRect;
vIndex: Integer;
vDrawingStyle: TDrawingStyle;
vImageType: TImageType;
vDrawOverlay,
stdDraw: Boolean;
vOverlay: TOverlay;
vDrawEffect: TGraphicsDrawEffect;
rImageList: TBGRAImageList;
begin
if (AIndex < 0) or (AIndex >= Count) then Exit;
ReferenceNeeded;
rImageList:= TBGRAImageList(ImageList);
//Copy Parameters to vars
vRect:= Rect(AX, AY, Width, Height);
vIndex:= AIndex;
vDrawingStyle:= ADrawingStyle;
vImageType:= AImageType;
vDrawOverlay:= True;
vOverlay:= AOverlay;
vDrawEffect:= ADrawEffect;
stdDraw:= True;
if Assigned(rImageList.FOnBeforeDraw)
then stdDraw:= rImageList.FOnBeforeDraw(rImageList, ACanvas, vRect, vIndex, vDrawingStyle, vImageType,
vDrawOverlay, vOverlay, vDrawEffect);
if stdDraw then
begin
if not(vDrawOverlay) then vOverlay:= 0;
if rImageList.rUseBGRADraw
then BGRADraw(ACanvas, vRect, vIndex, vOverlay, vDrawingStyle, vImageType, vDrawEffect,
rImageList.BkColor, rImageList.BlendColor)
else begin
if vDrawOverlay
then inherited DrawOverlay(ACanvas, vRect.Left, vRect.Top, vIndex, vOverlay, vDrawingStyle, vImageType, vDrawEffect)
else inherited Draw(ACanvas, vRect.Left, vRect.Top, vIndex, vDrawingStyle, vImageType, vDrawEffect);
end;
end;
if Assigned(TBGRAImageList(ImageList).FOnAfterDraw)
then TBGRAImageList(ImageList).FOnAfterDraw(TBGRAImageList(ImageList), ACanvas, vRect, vIndex, vDrawingStyle, vImageType,
vDrawOverlay, vOverlay, vDrawEffect);
end;
procedure TBGRAImageListResolution.StretchDrawOverlay(ACanvas: TCanvas; AIndex: Integer; ARect: TRect;
AOverlay: TOverlay; AEnabled: Boolean);
var
Bmp: TBitmap;
vRect: TRect;
OverlayI,
vIndex: Integer;
vDrawingStyle: TDrawingStyle;
vImageType: TImageType;
vDrawOverlay,
stdDraw: Boolean;
vOverlay: TOverlay;
vDrawEffect: TGraphicsDrawEffect;
rImageList: TBGRAImageList;
begin
if ((ARect.Right-ARect.Left)=Width) and ((ARect.Bottom-ARect.Top)=Height) then
DrawOverlay(ACanvas, ARect.Left, ARect.Top, AIndex, AOverlay, AEnabled)
else
begin
rImageList:= TBGRAImageList(ImageList);
//Copy Parameters to vars
vRect:= ARect;
vIndex:= AIndex;
vDrawingStyle:= rImageList.DrawingStyle;
vImageType:= rImageList.ImageType;
vDrawOverlay:= True;
vOverlay:= AOverlay;
vDrawEffect:= EffectMap[AEnabled];
stdDraw:= True;
if Assigned(rImageList.FOnBeforeDraw)
then stdDraw:= rImageList.FOnBeforeDraw(rImageList, ACanvas, vRect, vIndex, vDrawingStyle, vImageType,
vDrawOverlay, vOverlay, vDrawEffect);
if stdDraw then
begin
if not(vDrawOverlay) then vOverlay:= 0;
if rImageList.rUseBGRADraw
then BGRADraw(ACanvas, vRect, vIndex, vOverlay, vDrawingStyle, vImageType, vDrawEffect,
rImageList.BkColor, rImageList.BlendColor, True)
else begin
try
Bmp := TBitmap.Create;
{$IFDEF FPC}
GetBitmap(vIndex, Bmp, vDrawEffect);
{$ELSE}
GetBitmapRaw(vIndex, Bmp, vDrawEffect);
{$ENDIF}
ACanvas.StretchDraw(vRect, Bmp);
if vDrawOverlay and (vOverlay > 0) then
begin
OverlayI := rImageList.Overlays[vOverlay];
{$IFDEF FPC}
GetBitmap(OverlayI, Bmp, vDrawEffect);
{$ELSE}
GetBitmapRaw(OverlayI, Bmp, vDrawEffect);
{$ENDIF}
Bmp.Mask(rImageList.BkColor);
ACanvas.StretchDraw(vRect, Bmp);
end;
finally
Bmp.Free;
end;
end;
end;
if Assigned(rImageList.FOnAfterDraw)
then rImageList.FOnAfterDraw(rImageList, ACanvas, vRect, vIndex, vDrawingStyle, vImageType,
vDrawOverlay, vOverlay, vDrawEffect);
end;
end;
procedure TBGRAImageList.SetUseBGRADraw(AValue: Boolean);
begin
if (rUseBGRADraw<>AValue) then
begin
rUseBGRADraw:=AValue;
{ #todo 1 -oMaxM : How to Repaint? }
end;
end;
function TBGRAImageList.GetResolution(AImageWidth: Integer): TBGRAImageListResolution;
begin
Result := TBGRAImageListResolution(inherited GetResolution(AImageWidth));
end;
function TBGRAImageList.CreateEmptyBitmap(AImageWidth, AImageHeight: Integer; AHorizAlign: TAlignment;
AVertAlign: TTextLayout; var imgRect: TRect): TBitmap;
var
rW, rH:Single;
newWidth,
newHeight:Integer;
begin
if (AImageWidth > 0) and (AImageHeight > 0) then
begin
imgRect.Left:= 0;
imgRect.Top:= 0;
rW := AImageWidth / Width;
rH := AImageHeight / Height;
if (rW > rH)
then begin
newHeight:= round(AImageHeight / rW);
newWidth := Width;
end
else begin
newWidth := round(AImageWidth / rH);
newHeight := Height;
end;
case AHorizAlign of
taCenter: imgRect.Left:= (Width-newWidth) div 2;
taRightJustify: imgRect.Left:= Width-newWidth;
end;
case AVertAlign of
tlCenter: imgRect.Top:= (Height-newHeight) div 2;
tlBottom: imgRect.Top:= Height-newHeight;
end;
imgRect.Right:= imgRect.Left+newWidth;
imgRect.Bottom:= imgRect.Top+newHeight;
Result := TBitmap.Create;
if (BkColor = clNone) then
begin
Result.Transparent:= True;
Result.TransparentColor:= clNone;
end;
Result.SetSize(Width, Height);
Result.Canvas.Brush.Color := BkColor;
Result.Canvas.FillRect(0, 0, Width, Height);
end;
end;
function TBGRAImageList.CreateProportionalImage(AImage: TCustomBitmap;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap;
var
imgRect: TRect;
Bitmap, BitmapR :TBGRABitmap;
begin
Result:= nil;
if (AImage <> nil) and (AImage.Width > 0) and (AImage.Height > 0) then
try
Result:= CreateEmptyBitmap(AImage.Width, AImage.Height, AHorizAlign, AVertAlign, imgRect);
//Use our Stretch since TBitmap's one sucks
Bitmap := TBGRABitmap.Create;
Bitmap.Assign(AImage);
BitmapR :=Bitmap.Resample(imgRect.Width, imgRect.Height);
BitmapR.Draw(Result.Canvas, imgRect, False);
finally
Bitmap.Free;
BitmapR.Free;
end;
end;
function TBGRAImageList.CreateProportionalImage(AImageFileName: String;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap;
var
pict: TPicture;
begin
Result:= nil;
if FileExists(AImageFileName) then
try
pict:= TPicture.Create;
pict.LoadFromFile(AImageFileName);
Result:= CreateProportionalImage(pict.Bitmap, AHorizAlign, AVertAlign);
finally
pict.Free;
end;
end;
function TBGRAImageList.CreateMaskImage(AImage: TCustomBitmap; MaskColor: TColor): TBitmap;
begin
Result:= nil;
if (AImage <> nil) and (AImage.Width > 0) and (AImage.Height > 0) then
begin
Result := TBitmap.Create;
Result.Assign(AImage);
Result.TransparentColor := MaskColor;
Result.TransparentMode := tmFixed;
Result.Transparent := True;
Result.Masked:= True;
end;
end;
function TBGRAImageList.CreateMaskImage(AImageFileName: String; MaskColor: TColor): TBitmap;
var
//bmpBGRA: TBGRABitmap;
pict: TPicture;
begin
Result:= nil;
if FileExists(AImageFileName) then
try
(*bmpBGRA:= TBGRABitmap.Create;
bmpBGRA.LoadFromFile(AImageFileName);
Result := bmpBGRA.MakeBitmapCopy(MaskColor, False);
*)
pict:= TPicture.Create;
pict.LoadFromFile(AImageFileName);
Result:=TBitmap.Create;
Result.Assign(pict.Bitmap);
Result.TransparentColor := MaskColor;
Result.TransparentMode := tmFixed;
Result.Transparent := True;
Result.Masked:= True;
finally
pict.Free;
//bmpBGRA.Free;
end;
end;
function TBGRAImageList.CreateProportionalMaskImage(AImage: TCustomBitmap; MaskColor: TColor;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap;
var
MaskBmp: TBitmap;
begin
try
MaskBmp:= CreateMaskImage(AImage, MaskColor);
Result:= CreateProportionalImage(MaskBmp, AHorizAlign, AVertAlign);
Result.TransparentColor:= MaskBmp.TransparentColor;
finally
MaskBmp.Free;
end;
end;
function TBGRAImageList.CreateProportionalMaskImage(AImageFileName: String; MaskColor: TColor;
AHorizAlign: TAlignment; AVertAlign: TTextLayout): TBitmap;
var
MaskBmp: TBitmap;
begin
try
MaskBmp:= CreateMaskImage(AImageFileName, MaskColor);
Result:= CreateProportionalImage(MaskBmp, AHorizAlign, AVertAlign);
Result.TransparentColor:= MaskBmp.TransparentColor;
finally
MaskBmp.Free;
end;
end;
function TBGRAImageList.GetResolutionClass: TCustomImageListResolutionClass;
begin
Result := TBGRAImageListResolution;
end;
procedure TBGRAImageList.LoadFromFile(const AFilename: string);
begin
LoadFromFileUTF8(SysToUtf8(AFilename));
end;
procedure TBGRAImageList.LoadFromFileUTF8(const AFilenameUTF8: string);
var
stream: TFileStreamUTF8;
begin
stream := TFileStreamUTF8.Create(AFilenameUTF8, fmOpenRead or fmShareDenyWrite);
try
ReadData(stream);
finally
stream.Free;
end;
end;
procedure TBGRAImageList.SaveToFile(const AFilename: string);
begin
SaveToFileUTF8(SysToUtf8(AFilename));
end;
procedure TBGRAImageList.SaveToFileUTF8(const AFilenameUTF8: string);
var
stream: TFileStreamUTF8;
begin
stream := TFileStreamUTF8.Create(AFilenameUTF8, fmCreate);
try
WriteData(stream);
finally
stream.Free;
end;
end;
{$if lcl_fullversion>=4990000}
procedure TBGRAImageList.ReadData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
begin
GetResolution(Width).ReadData(AStream, AIndex, StartStreamPos, CalcPos);
end;
procedure TBGRAImageList.WriteData(AStream: TStream);
begin
if (csDesigning in ComponentState)
then inherited WriteData(AStream)
else GetResolution(Width).WriteData(AStream, False); // don't compress data so we can write the image n without rewriting everything.
end;
procedure TBGRAImageList.WriteData(AStream: TStream; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
begin
GetResolution(Width).WriteData(AStream, AIndex, StartStreamPos, CalcPos);
end;
procedure TBGRAImageList.LoadFromFile(const AFilename: string; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
begin
LoadFromFileUTF8(SysToUtf8(AFilename), AIndex, StartStreamPos, CalcPos);
end;
procedure TBGRAImageList.LoadFromFileUTF8(const AFilenameUTF8: string; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
var
stream: TFileStreamUTF8;
begin
stream := TFileStreamUTF8.Create(AFilenameUTF8, fmOpenRead or fmShareDenyWrite);
try
ReadData(stream, AIndex, StartStreamPos, CalcPos);
finally
stream.Free;
end;
end;
procedure TBGRAImageList.SaveToFile(const AFilename: string; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
begin
SaveToFileUTF8(SysToUtf8(AFilename), AIndex, StartStreamPos, CalcPos);
end;
procedure TBGRAImageList.SaveToFileUTF8(const AFilenameUTF8: string; AIndex: Integer;
StartStreamPos: Int64; CalcPos: Boolean);
var
stream: TFileStreamUTF8;
begin
stream := TFileStreamUTF8.Create(AFilenameUTF8, fmOpenReadWrite);
try
WriteData(stream, AIndex, StartStreamPos, CalcPos);
finally
stream.Free;
end;
end;
{$else}
procedure TBGRAImageList.Overlay(AIndex: Integer; AOverlay: TOverlay);
begin
TImageList(Self).Overlay(AIndex, AOverlay);
rOverlays[AOverlay] := AIndex;
end;
{$endif}
procedure TBGRAImageList.StretchDrawOverlay(ACanvas: TCanvas; AIndex: Integer; ARect: TRect; AOverlay: TOverlay;
AEnabled: Boolean);
begin
GetResolution(Width).StretchDrawOverlay(ACanvas, AIndex, ARect, AOverlay, AEnabled);
end;
function TBGRAImageList.AddProportionally(Image: TCustomBitmap; Mask: TCustomBitmap; AHorizAlign: TAlignment;
AVertAlign: TTextLayout): Integer;
begin
try
Result:= Count;
InsertProportionally(Result, Image, Mask, AHorizAlign, AVertAlign);
except
Result:= -1;
end;
end;
function TBGRAImageList.AddProportionally(AImageFileName: String; AMaskFileName: String; AHorizAlign: TAlignment;
AVertAlign: TTextLayout): Integer;
begin
try
Result := Count;
InsertProportionally(Result, AImageFileName, AMaskFileName, AHorizAlign, AVertAlign);
except
Result:= -1;
end;
end;
function TBGRAImageList.AddMaskedProportionally(Image: TCustomBitmap; MaskColor: TColor; AHorizAlign: TAlignment;
AVertAlign: TTextLayout): Integer;
begin
try
Result := Count;
InsertMaskedProportionally(Result, Image, MaskColor, AHorizAlign, AVertAlign);
except
Result:= -1;
end;
end;
function TBGRAImageList.AddMaskedProportionally(AImageFileName: String; MaskColor: TColor; AHorizAlign: TAlignment;
AVertAlign: TTextLayout): Integer;
begin
try
Result := Count;
InsertMaskedProportionally(Result, AImageFileName, MaskColor, AHorizAlign, AVertAlign);
except
Result:= -1;
end;
end;
procedure TBGRAImageList.InsertProportionally(AIndex: Integer; AImage: TCustomBitmap; AMask: TCustomBitmap;
AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
Bmp,
BmpMask: TBitmap;
begin
try
BmpMask := CreateProportionalImage(AMask, AHorizAlign, AVertAlign);
Bmp := CreateProportionalImage(AImage, AHorizAlign, AVertAlign);
Insert(AIndex, Bmp, BmpMask);
finally
BmpMask.Free;
Bmp.Free;
end;
end;
procedure TBGRAImageList.InsertProportionally(AIndex: Integer; AImageFileName: String; AMaskFileName: String;
AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
Bmp,
BmpMask: TBitmap;
begin
try
BmpMask := CreateProportionalImage(AMaskFileName, AHorizAlign, AVertAlign);
Bmp := CreateProportionalImage(AImageFileName, AHorizAlign, AVertAlign);
Insert(AIndex, Bmp, BmpMask);
finally
BmpMask.Free;
Bmp.Free;
end;
end;
procedure TBGRAImageList.InsertMaskedProportionally(AIndex: Integer; AImage: TCustomBitmap; MaskColor: TColor;
AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
BmpMask: TBitmap;
begin
try
BmpMask := CreateProportionalMaskImage(AImage, MaskColor, AHorizAlign, AVertAlign);
InsertMasked(AIndex, BmpMask, MaskColor);
finally
BmpMask.Free;
end;
end;
procedure TBGRAImageList.InsertMaskedProportionally(AIndex: Integer; AImageFileName: String; MaskColor: TColor;
AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
BmpMask: TBitmap;
begin
try
BmpMask:= CreateProportionalMaskImage(AImageFileName, MaskColor, AHorizAlign, AVertAlign);
InsertMasked(AIndex, BmpMask, MaskColor);
finally
BmpMask.Free;
end;
end;
procedure TBGRAImageList.ReplaceProportionally(AIndex: Integer; AImage: TCustomBitmap; AMask: TCustomBitmap;
const AllResolutions: Boolean; AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
Bmp,
BmpMask: TBitmap;
begin
try
BmpMask := CreateProportionalImage(AMask, AHorizAlign, AVertAlign);
Bmp := CreateProportionalImage(AImage, AHorizAlign, AVertAlign);
Replace(AIndex, Bmp, BmpMask, AllResolutions);
finally
BmpMask.Free;
Bmp.Free;
end;
end;
procedure TBGRAImageList.ReplaceProportionally(AIndex: Integer; AImageFileName: String; AMaskFileName: String;
const AllResolutions: Boolean; AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
Bmp,
BmpMask: TBitmap;
begin
try
BmpMask := CreateProportionalImage(AMaskFileName, AHorizAlign, AVertAlign);
Bmp := CreateProportionalImage(AImageFileName, AHorizAlign, AVertAlign);
Replace(AIndex, Bmp, BmpMask, AllResolutions);
finally
BmpMask.Free;
Bmp.Free;
end;
end;
procedure TBGRAImageList.ReplaceMaskedProportionally(AIndex: Integer; AImage: TCustomBitmap; MaskColor: TColor;
const AllResolutions: Boolean; AHorizAlign: TAlignment; AVertAlign: TTextLayout);
var
BmpMask: TBitmap;
begin
try
BmpMask := CreateProportionalMaskImage(AImage, MaskColor, AHorizAlign, AVertAlign);
ReplaceMasked(AIndex, BmpMask, MaskColor, AllResolutions);
finally
BmpMask.Free;
end;
end;
procedure TBGRAImageList.ReplaceMaskedProportionally(AIndex: Integer; AImageFileName: String; MaskColor: TColor;
const AllResolutions: Boolean; AHorizAlign: TAlignment; AVertAlign: TTextLayout);