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GitHub - exilon/QuickImageFX: Simplifying image manipulation using GDI, Graphics32, OpenCV or Vampyre Imaging libraries

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Delphi library for simplifying image load/save, conversion and transformation. Can load/save png, jpg, jxl, webp, avif, tiff, gif and bmp. Can get image from different resources: file, stream, http, imagelist, associated windows icon, executable file icon, etc... Rotate, flip, grayscale and many other transformations. GDI+, Graphics32, OpenCV, Vampyre and LibVips engines available.

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*NEW: Delphi 12 Athens support

*NEW: LibVips engine added

*NEW: Interface based

*NEW: Vampyre lib engine added

*NEW: New functions added

*NEW: Refactory classes

*NEW: Delphinus support

You can select one or more of the available engines ImageFX supports. Add one or more of below units to your uses clause:

Create: Create instance of ImageFX to load/manipulate images.

var
  ImageFX : IImageFX;
begin
  ImageFX := TImageFXGDI //You can create as TImageFXGDI, TImageFXGR32, TImageFXOpenCV or TImageFXVampyre to use different graphic engines
  ImageFX.LoadFromFile('.\test.jpg');
  ImageFX.Rotate90;
  ImageFX.SaveAsPNG('.\Test.png');
end;

Load/Save: Can load/save png, jpg, gif and bmp and get image from different resources like file, stream, http, imagelist, associated windows icon, executable file icon, etc...

//Load image from files like jpg, gif, png and bmp
ImageFX.LoadFromFile('.\file.jpg');
	
//Load/Save image from/to a memorystream, filestream, etc...
ImageFX.LoadFromStream(MyStream);
ImageFX.SaveToStream(MyStream,ifJPG);
	
//Load image from an icon class
ImageFX.LoadFromIcon(MyIcon);
	
//Load image from an icon file
ImageFX.LoadFromFileIcon('.\file.ico');
	
//Get image associated in windows with this type of extension
ImageFX.LoadFromFileExtension('.\file.xls',True);
	
//Load from exe resource
ImageFX.LoadFromResource('Main.ico');
	
//Get image from a http link
ImageFX.LoadFromHTTP('http://www.mysite.com/file.jpg',ReturnHTTPCode,True);
	
//Load/Save from string
ImageFX.LoadFromString(MyImageString);
ImageFX.SaveToString(MyImageString);

Image Info: Get resolution, aspect ratio of an image.

ImageFX.GetResolution(x,y)
ImageFX.AspectRatioStr //aspect ratio (4:3,16:9)
ImageFX.IsGray

Image Resize:

//Resize image to fit max bounds of 500x300 and fills rest of target size with a border black color
ImageFX.ResizeOptions.BorderColor := clBlack; 
ImageFX.Resize(500,300, rmFitToBounds, [rfCenter], rmLinear);

//Same image resize alternative/advanced mode
ImageFX.ResizeOptions.ResamplerMode := rmLinear;
ImageFX.ResizeOptions.ResizeMode := rmFitToBounds;
ImageFX.ResizeOptions.Center := True;
ImageFX.ResizeOptions.FillBorders := True;
ImageFX.ResizeOptions.BorderColor := clBlack;
ImageFX.Resize(500,300);

ResizeOptions:

  • NoMagnify: If true not resize image if smallest than especified new size.

  • ResizeMode: Resize algorithms to calculate desired final size:

    • rmStretch Stretch original image to fit target size without preserving original aspect ratio.
    • rmScale Recalculate width or height target size to preserve original aspect ratio.
    • rmCropToFill Preserve target aspect ratio cropping original image to fill whole size.
    • rmFitToBounds Resize image to fit max bounds of target size.

  • ResamplerMode: Resize algorithms to be applied:

    • rsAuto Uses rmArea for downsampling and rmLinear for upsampling
    • rsGDIStrech GDI only mode.
    • rsNearest Low quality - High performance.
    • rsGR32Draft GR32 only. Medium quality - High performance (downsampling only).
    • rsOCVArea OpenCV only. Medium quality - High performance (downsampling only).
    • rsLinear Medium quality - Medium performance.
    • rsGR32Kernel GR32 only. High quality - Low performance (depends on kernel width).
    • rsOCVCubic OpenCV only. High quality - Medium/Low performance.
    • rsOCVLanczos4 OpenCV only. High quality - Low performance.

  • Center: Centers image

  • FillBorders: Fill borders of a scaled image in destination rectangle if smaller.

  • BorderColor: Color of filling borders.

Transforms: Apply rotations, flips, scanline effects, bright and others transformations to your images.

//Rotate image 90 degrees
ImageFX.Rotate90;
    
//Rotate image 45 degrees
ImageFX.RotateAngle(45);
    
//Convert to grayscale
ImageFX.GrayScale;
    
//Flip image horizontally
ImageFX.FlipX;
    
//Increase bright by 50%
ImageFX.Lighten(50);
    
//Change color of a pixel
PixInfo.R := Random(255); //R
PixInfo.G := Random(255); //G
PixInfo.B := Random(120); //B
PixInfo.A := 200; //Alpha
imageFX.Pixel[x,y] := PixInfo;
    
//Draw an overlay image over current image with 50% transparency
ImageFX.DrawCentered(pngimage,0.5);

Format conversions: Can convert between image formats.

ImageFX.LoadFromFile('.\myfile.jpg');
ImageFX.SaveAsPNG('.\myfile.png');

Almost all functions return self class, so you can chain many actions and effects like this:

//Rotate 90 degrees and flip horizontally, convert to grayscale and save to a png file.
ImageFX.Rotate90.FlipX.GrayScale.SaveToPNG('.\myfile.png');
        
// Load from file, rotate180, resize to 100x100 and assign to a TImage.    
MyImage.Picture.Asssign(ImageFX.LoadFromFile('.\myfile.jpg').Rotate180.Resize(100,100).AsBitmap);

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