ImageEn, unit iexBitmaps

TIEBitmap.Assign

TIEBitmap.Assign


Declaration

procedure Assign(Source: TObject; AssignParams: Boolean = True);


Description

Copies an image from source object. Source can be a TIEBitmap, TBitmap, TGraphic or TIcon.

Notes:
- The Params are also copied (if ParamsEnabled is true for both source and destination).
- Assign copies the alpha channel of a TIEBitmap, use AssignImage to only copy the image


Examples

// Display the same image as a TImage
ImageEnView1.IEBitmap.Assign( Image1.Picture.Bitmap );
ImageEnView1.Update();

// Copy from a TGraphic class
jpg := TJpegImage.Create;
try
  jpg.Loadfromfile( 'D:\Image.jpg' );
  ImageEnView1.IEBitmap.Assign( jpg );
  ImageEnView1.Update();
finally
  jpg.free
end;

// Assign a 32bit Bitmap with alpha channel to an ImageEnView (keeping the alpha)
var
  bmp: TBitmap;
begin
  bmp := TBitmap.Create();
  bmp.LoadFromFile( 'Bmp32_with_Alpha.bmp' );
  ImageEnView1.IEBitmap.Assign( bmp );
  ImageEnView1.IEBitmap.SynchronizeRGBA( True, True );
  ImageEnView1.Update();
  bmp.Free();
end;


See Also

- SynchronizeRGBA


TIEBitmap Assignment and Drawing Methods

TIEBitmap Methods
Method Mode Notes
Assign From TIEBitmap/TBitmap/TGraphic/TIcon Copy whole image
AssignImage From TIEBitmap Like assign, but does not copy the alpha channel
AssignRect From TIEBitmap/TBitmap Copy a specified rect
CopyAndConvertFormat From TIEBitmap Copy whole image
CopyRectTo To TIEBitmap Copy rect to another image (without scaling)
CopyWithMask1 To TIEBitmap Copy image using a mask to specify what is copied from the source
CopyWithMask2 To TIEBitmap Copy image using a mask to specify what is replaced in the destintation
DrawToTIEBitmap To TIEBitmap Copies all or part of the image to a specified position and/or size
MergeAlphaRectTo With TIEBitmap Merges all or part of two TIEBitmaps with alpha channels to a specified position using merge rules
MergeWithAlpha With TIEBitmap Merges all or part of two TIEBitmaps with alpha channels to a specified position
RenderToTIEBitmapEx To TIEBitmap Extended drawing of content to a TIEBitmap
StretchRectTo To TIEBitmap Copy rect to dest rect in another image (with scaling)
SwitchTo To TIEBitmap Move content from one TIEBitmap to another

TBitmap Methods
Method Mode Notes
Assign From TIEBitmap/TBitmap/TGraphic/TIcon Copy whole image
AssignRect From TIEBitmap/TBitmap Copy a specified rect
CopyFromTBitmap From TBitmap Copy whole image
CopyToTBitmap To TBitmap Copy whole image
RenderToTBitmapEx To TBitmap Extended drawing of content to a TBitmap

TCanvas Methods
Method Mode Notes
DrawToCanvas To TCanvas Copies whole image to canvas at specified position (ignoring the alpha channel)
DrawToCanvasWithAlpha To TCanvas Copies whole image to canvas at specified position (honoring the alpha channel)
RenderToCanvas To TCanvas Extended drawing of content to a TCanvas (ignoring the alpha channel)
RenderToCanvasWithAlpha To TCanvas Extended drawing of content to a TCanvas (honoring the alpha channel)