library: libGraf
#include "TAttImage.h" |
TAttImage
class description - source file - inheritance tree (.pdf)
public:
TAttImage()
TAttImage(TAttImage::EImageQuality lquality, UInt_t lcompression, Bool_t constRatio)
TAttImage(const TAttImage&)
virtual ~TAttImage()
static TClass* Class()
void Copy(TAttImage& attline) const
virtual void EditorClosed()
Bool_t GetConstRatio() const
UInt_t GetImageCompression() const
TAttImage::EImageQuality GetImageQuality() const
virtual const TImagePalette& GetPalette() const
virtual TClass* IsA() const
TAttImage& operator=(const TAttImage&)
virtual void ResetAttImage(Option_t* option)
virtual void SaveImageAttributes(ofstream& out, const char* name, TAttImage::EImageQuality qualdef = kImgDefault, UInt_t comprdef = 0, Bool_t constRatiodef = kTRUE)
virtual void SetConstRatio(Bool_t constRatio = kTRUE)
virtual void SetImageCompression(UInt_t lcompression)
virtual void SetImageQuality(TAttImage::EImageQuality lquality)
virtual void SetPalette(const TImagePalette* palette)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void StartPaletteEditor()
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
protected:
TAttImage::EImageQuality fImageQuality quality of image
UInt_t fImageCompression compression [0 .. 100] 0: no compression
Bool_t fConstRatio keep aspect ratio of image on the screen
TImagePalette fPalette color palette for value -> color conversion
TPaletteEditor* fPaletteEditor ! GUI to edit the color palette
public:
static const TAttImage::EImageQuality kImgDefault
static const TAttImage::EImageQuality kImgPoor
static const TAttImage::EImageQuality kImgFast
static const TAttImage::EImageQuality kImgGood
static const TAttImage::EImageQuality kImgBest
TAttImage
Image attributes are:
Image Quality (see EImageQuality for the list of qualities)
Compression defines the compression rate of the color data in the
internal image structure. Speed and memory depends
on this rate, but not the image display itself
0: no compression; 100: max compression
Radio Flag: kTRUE the x/y radio of the displayed image is always
identical to the original image
kFALSE the x and y size of the displayed image depends
on the size of the pad
Palette: Defines the conversion from a pixel value to the
screen color
This class is used (in general by secondary inheritance)
by some other classes (image display).
TImagePalette
A class to define a conversion from pixel values to pixel color.
A Palette is defined by some anchor points. Each anchor point has
a value between 0 and 1 and a color. An image has to be normalized
and the values between the anchor points are interpolated.
All member variables are public and can be directly manipulated.
In most cases the default operator will be used to create a
TImagePalette. In this case the member arrays have to be allocated
by an application and will be deleted in the destructor of this
class.
We provide few predifined palettes:
o gHistPalette - palette used in TH2::Draw("col")
o gWebPalette
The web palette is a set of 216 colors that will not dither or
shift on PCs or Macs. Browsers use this built-in palette when
they need to render colors on monitors with only 256 colors
(also called 8-bit color monitors).
The 6x6x6 web palette provides very quick color index lookup
and can be used for good quality convertion of images into
2-D histograms.
TPaletteEditor
This class provides a way to edit the palette via a GUI.
TAttImage()
TAttImage default constructor.
Calls ResetAttImage to set the attributes to a default state.
TAttImage(EImageQuality lquality, UInt_t lcompression,
Bool_t constRatio)
TAttImage normal constructor.
Image attributes are taken from the argument list
qualtity : must be one of EImageQuality (kImgDefault is same as
kImgGood in the current implementation)
lcompression : defines the compression rate of the color data in the
image. Speed and memory depends on this rate, but not
the image display itself
0: no compression; 100: max compression
constRatio : keeps the aspect ratio of the image constant on the
screen (in pixel units)
~TAttImage()
TAttImage destructor.
void Copy(TAttImage &attimage) const
Copy this image attributes to a new attimage.
void ResetAttImage(Option_t *)
Reset this image attributes to default values.
Default values are:
quality: kImgPoor, (no smoothing while the image is zoomed)
compression: 0 (no compression)
constRatio: kTRUE
palette: a default rainbow palette
void SaveImageAttributes(ofstream &out, const char *name,
EImageQuality qualdef,
UInt_t comprdef, Bool_t constRatiodef)
Save image attributes as C++ statement(s) on output stream, but
not the palette.
void SetConstRatio(Bool_t constRatio)
Set (constRatio = kTRUE) or unset (constRadio = kFALSE) the ratio flag.
The aspect ratio of the image on the screen is constant if the ratio
flag is set. That means one image pixel is allways a square on the screen
independent of the pad size and of the size of the zoomed area.
void SetPalette(const TImagePalette *palette)
Set a new palette for the image. If palette == 0 a default
rainbow color palette is used.
void StartPaletteEditor()
Opens a GUI to edit the color palette.
Inline Functions
Bool_t GetConstRatio() const
UInt_t GetImageCompression() const
TAttImage::EImageQuality GetImageQuality() const
const TImagePalette& GetPalette() const
void SetImageCompression(UInt_t lcompression)
void SetImageQuality(TAttImage::EImageQuality lquality)
void EditorClosed()
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
TAttImage TAttImage(const TAttImage&)
TAttImage& operator=(const TAttImage&)
Author: Reiner Rohlfs 24/03/02
Last update: root/graf:$Name: $:$Id: TAttImage.cxx,v 1.4 2004/12/07 15:34:27 brun Exp $
Copyright (C) 2001-2001, Rene Brun, Fons Rademakers and Reiner Rohlfs *
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