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Represents a graphical image.
Source position: intfgraphics.pas line 110
type TLazIntfImage = class(TFPCustomImage) end; |
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protected |
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procedure SetUsePalette(); override; |
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procedure SetInternalColor(); override; |
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function GetInternalColor(); override; |
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procedure SetInternalPixel(); override; |
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function GetInternalPixel(); override; |
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procedure FreeData; virtual; |
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procedure SetDataDescription(); virtual; |
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procedure ChooseGetSetColorFunctions; virtual; |
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procedure ChooseRawBitsProc(); |
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procedure GetColor_Generic(); |
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procedure GetColor_RGBA_NoPalette(); |
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procedure GetColor_RGB_NoPalette(); |
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procedure GetColor_Gray_NoPalette(); |
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procedure GetColor_GrayAlpha_NoPalette(); |
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procedure GetColor_NULL(); |
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procedure GetColor_BPP32_A8R8G8B8_BIO_TTB(); |
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procedure GetColor_BPP32_A8B8G8R8_BIO_TTB(); |
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procedure GetColor_BPP32_A8G8R8B8_BIO_TTB(); |
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procedure GetColor_BPP32_A8G8B8R8_BIO_TTB(); |
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procedure GetColor_BPP32_A8R8B8G8_BIO_TTB(); |
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procedure GetColor_BPP32_A8B8R8G8_BIO_TTB(); |
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procedure GetColor_BPP32_B8G8R8A8_BIO_TTB(); |
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procedure GetColor_BPP32_R8G8B8A8_BIO_TTB(); |
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procedure GetColor_BPP32_G8B8R8A8_BIO_TTB(); |
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procedure GetColor_BPP32_G8R8B8A8_BIO_TTB(); |
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procedure GetColor_BPP32_B8R8G8A8_BIO_TTB(); |
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procedure GetColor_BPP32_R8B8G8A8_BIO_TTB(); |
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procedure GetColor_BPP32_X8R8G8B8_BIO_TTB(); |
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procedure GetColor_BPP32_X8B8G8R8_BIO_TTB(); |
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procedure GetColor_BPP32_X8G8R8B8_BIO_TTB(); |
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procedure GetColor_BPP32_X8G8B8R8_BIO_TTB(); |
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procedure GetColor_BPP32_X8R8B8G8_BIO_TTB(); |
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procedure GetColor_BPP32_X8B8R8G8_BIO_TTB(); |
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procedure GetColor_BPP32_B8G8R8X8_BIO_TTB(); |
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procedure GetColor_BPP32_R8G8B8X8_BIO_TTB(); |
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procedure GetColor_BPP32_G8B8R8X8_BIO_TTB(); |
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procedure GetColor_BPP32_G8R8B8X8_BIO_TTB(); |
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procedure GetColor_BPP32_B8R8G8X8_BIO_TTB(); |
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procedure GetColor_BPP32_R8B8G8X8_BIO_TTB(); |
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procedure GetColor_BPP24_B8G8R8_BIO_TTB(); |
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procedure GetColor_BPP24_R8G8B8_BIO_TTB(); |
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procedure GetColor_BPP24_G8B8R8_BIO_TTB(); |
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procedure GetColor_BPP24_G8R8B8_BIO_TTB(); |
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procedure GetColor_BPP24_B8R8G8_BIO_TTB(); |
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procedure GetColor_BPP24_R8B8G8_BIO_TTB(); |
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procedure GetMask_Generic(); |
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procedure SetColor_Generic(); |
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procedure SetColor_RGBA_NoPalette(); |
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procedure SetColor_RGB_NoPalette(); |
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procedure SetColor_Gray_NoPalette(); |
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procedure SetColor_GrayAlpha_NoPalette(); |
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procedure SetColor_NULL(); |
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procedure SetColor_BPP32_A8R8G8B8_BIO_TTB(); |
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procedure SetColor_BPP32_A8B8G8R8_BIO_TTB(); |
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procedure SetColor_BPP32_A8G8R8B8_BIO_TTB(); |
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procedure SetColor_BPP32_A8G8B8R8_BIO_TTB(); |
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procedure SetColor_BPP32_A8R8B8G8_BIO_TTB(); |
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procedure SetColor_BPP32_A8B8R8G8_BIO_TTB(); |
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procedure SetColor_BPP32_B8G8R8A8_BIO_TTB(); |
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procedure SetColor_BPP32_R8G8B8A8_BIO_TTB(); |
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procedure SetColor_BPP32_G8B8R8A8_BIO_TTB(); |
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procedure SetColor_BPP32_G8R8B8A8_BIO_TTB(); |
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procedure SetColor_BPP32_B8R8G8A8_BIO_TTB(); |
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procedure SetColor_BPP32_R8B8G8A8_BIO_TTB(); |
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procedure SetColor_BPP32_X8R8G8B8_BIO_TTB(); |
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procedure SetColor_BPP32_X8B8G8R8_BIO_TTB(); |
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procedure SetColor_BPP32_X8G8R8B8_BIO_TTB(); |
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procedure SetColor_BPP32_X8G8B8R8_BIO_TTB(); |
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procedure SetColor_BPP32_X8R8B8G8_BIO_TTB(); |
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procedure SetColor_BPP32_X8B8R8G8_BIO_TTB(); |
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procedure SetColor_BPP32_B8G8R8X8_BIO_TTB(); |
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procedure SetColor_BPP32_R8G8B8X8_BIO_TTB(); |
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procedure SetColor_BPP32_G8B8R8X8_BIO_TTB(); |
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procedure SetColor_BPP32_G8R8B8X8_BIO_TTB(); |
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procedure SetColor_BPP32_B8R8G8X8_BIO_TTB(); |
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procedure SetColor_BPP32_R8B8G8X8_BIO_TTB(); |
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procedure SetColor_BPP24_B8G8R8_BIO_TTB(); |
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procedure SetColor_BPP24_R8G8B8_BIO_TTB(); |
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procedure SetColor_BPP24_G8B8R8_BIO_TTB(); |
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procedure SetColor_BPP24_G8R8B8_BIO_TTB(); |
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procedure SetColor_BPP24_B8R8G8_BIO_TTB(); |
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procedure SetColor_BPP24_R8B8G8_BIO_TTB(); |
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procedure SetMask_Generic(); |
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public |
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constructor Create(); |
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constructor CreateCompatible(); |
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destructor Destroy; override; |
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procedure Assign(); override; |
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procedure BeginUpdate; |
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procedure EndUpdate; |
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procedure SetSize(); override; |
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SetSize - define the height and width of the image |
function CheckDescription(); virtual; |
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CheckDescription - looks at the supplied Image Description record and returns True if it matches the actual properties of the image |
procedure LoadFromDevice(); virtual; |
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LoadFromDevice - loads the image from the device with specified handle |
procedure LoadFromBitmap(); virtual; |
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LoadFromBitmap - loads the image from a Bitmap |
procedure CreateBitmaps(); virtual; |
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CreateBitmaps - generates a Bitmap from the image data |
procedure SetRawImage(); virtual; |
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procedure GetRawImage(); virtual; |
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procedure FillPixels(); virtual; |
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procedure CopyPixels(); virtual; |
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procedure AlphaBlend(); |
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procedure AlphaFromMask(); |
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AlphaFromMask - gets the alpha value from the mask if AKeepAlpha is True (default condition) |
procedure Mask(); |
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procedure GetXYDataPosition(); |
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procedure GetXYMaskPosition(); |
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function GetDataLineStart(); |
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Returns an pointer to the scanline raw data. |
procedure CreateData; virtual; |
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function HasTransparency; virtual; |
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function HasMask; virtual; |
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procedure SetDataDescriptionKeepData(); |
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property PixelData: PByte; [r] |
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PixelData - the raw data for the current pixel |
property MaskData: PByte; [r] |
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MaskData - the raw mask data for the current pixel |
property DataDescription: TRawImageDescription; [rw] |
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DataDescription - the raw description record for the current image |
property TColors []: TGraphicsColor; [rw] |
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TColors - the colours available for the present position |
property Masked []: Boolean; [rw] |
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Masked - whether the image mask applies at the current position |
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Represents a graphical image. |
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TFPCustomImage |
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TObject |
This descendant of TFPCustomImage stores the image data as TRawImage, and is therefore able to interchange images directly with the LCL interfaces.
A large number of the protected methods (GetColorxxxxxx and SetColorxxxxxx) deal with direct interface to the operating system at the pixel level
Usage examples: 1. Loading a .xpm file into a TBitmap: var BmpHnd,MaskHnd: HBitmap; Bitmap1: TBitmap; IntfImg1: TLazIntfImage; Reader: TLazReaderXPM; begin // create a bitmap (or use an existing one) Bitmap1:=TBitmap.Create; // create the raw image IntfImg1:=TLazIntfImage.Create(0,0); // get the description for the current screen (bitsperpixel, depth, ...) IntfImg1.GetDescriptionFromDevice(0); // create the XPM reader Reader:=TLazReaderXPM.Create; // load the image IntfImg1.LoadFromFile('filename.xpm',Reader); // create the bitmap handles IntfImg1.CreateBitmap(BmpHnd,MaskHnd); // apply handles to the Bitmap1 Bitmap1.Handle:=BmpHnd; Bitmap1.MaskHandle:=MaskHnd; // clean up Reader.Free; IntfImg1.Free; // do something with the Bitmap1 ... end; 2. Saving a TBitmap to a .xpm file: var BmpHnd,MaskHnd: HBitmap; Bitmap1: TBitmap; IntfImg1: TLazIntfImage; Writer: TLazWriterXPM; begin ... // create the raw image IntfImg1:=TLazIntfImage.Create(0,0); // load the raw image from the bitmap handles IntfImg1.LoadFromBitmap(Bitmap1.Handle,Bitmap1.MaskHandle); // create the XPM writer Writer:=TLazWriterXPM.Create; // save image to file IntfImg1.SaveToFile('filename.xpm',Writer); // clean up Writer.Free; IntfImg1.Free; ... end; }
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