Vcl.Imaging.jpeg.TJPEGDefaults

• Up to Parent: Vcl.Imaging.jpeg
• Fields

Delphi

  TJPEGDefaults = record
    CompressionQuality: TJPEGQualityRange;
    Grayscale: Boolean;
    Performance: TJPEGPerformance;
    PixelFormat: TJPEGPixelFormat;
    ProgressiveDisplay: Boolean;
    ProgressiveEncoding: Boolean;
    Scale: TJPEGScale;
    Smoothing: Boolean;
  end;

C++

struct DECLSPEC_DRECORD TJPEGDefaults
{
public:
    TJPEGQualityRange CompressionQuality;
    bool Grayscale;
    TJPEGPerformance Performance;
    TJPEGPixelFormat PixelFormat;
    bool ProgressiveDisplay;
    bool ProgressiveEncoding;
    TJPEGScale Scale;
    bool Smoothing;
};

Properties

Type	Visibility	Source	Unit	Parent
record struct	public	Vcl.Imaging.jpeg.pas Vcl.Imaging.jpeg.hpp	Vcl.Imaging.jpeg	Vcl.Imaging.jpeg

Description

TJPEGDefaults represents a set of default options used when manipulating jpeg images.

Use variables of type TJPEGDefaults to pass a default set of options used when manipulating jpeg images. Applications usually do not need to create variables of TJPEGDefaults type. The jpeg unit defines a global variable called JPEGDefaults, which encapsulates the default options. The following table lists all the fields contained within TJPEGDefaults and their description.

Field	Description
CompressionQuality	Indicates the trade-off ratio between the image quality and the file size.
Grayscale	Determines whether the image output of a jpeg image is black and white or color.
Performance	Controls the trade-off between color quality and speed of decompression.
PixelFormat	The default pixel format used when displaying a jpeg image.
ProgressiveDisplay	Controls whether a jpeg image is progressively displayed while decompressing.
ProgressiveEncoding	Controls whether a jpeg image can be progressively displayed when it is decompressed.
Scale	Determines the size of a jpeg image when it is displayed.
Smoothing	Determines whether a jpeg image displays in blocks or with blurred edges.

See Also

• JPEGDefaults

• TJPEGImage