library: libGui
#include "TGPicture.h"

TGPicturePool

class description - source file - inheritance tree (.pdf)

class TGPicturePool : public TObject

Inheritance Chart:

TObject

TGPicturePool


    public:

                       TGPicturePool(const TGClient* client, const char* path)
                       TGPicturePool(const TGPicturePool&)
               virtual ~TGPicturePool()
        static TClass* Class()
                  void FreePicture(const TGPicture* pic)
           const char* GetPath() const
      const TGPicture* GetPicture(const char* name) const
      const TGPicture* GetPicture(const char* name, char** xpm) const
      const TGPicture* GetPicture(const char* name, UInt_t new_width, UInt_t new_height) const
      const TGPicture* GetPicture(const char* name, Pixmap_t pxmap, Pixmap_t mask = 0) const
       virtual TClass* IsA() const
          virtual void Print(Option_t* option = "") const
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)

Data Members


    protected:

      const TGClient* fClient   client for which we keep icon pool
              TString fPath     icon search path
          THashTable* fPicList  hash table containing the icons

Class Description

                                                                      
 TGPicture & TGPicturePool                                            
                                                                      
 The TGPicture class implements pictures and icons used in the        
 different GUI elements and widgets. The TGPicturePool class          
 implements a TGPicture cache. TGPictures are created, managed and    
 destroyed by the TGPicturePool.

const TGPicture* GetPicture(const char *name)

 Get a picture from the picture pool. Picture must be freed using
 TGPicturePool::FreePicture(). If picture is not found 0 is returned.

const TGPicture* GetPicture(const char *name, UInt_t new_width, UInt_t new_height)

 Get picture with specified size from pool (picture will be scaled if
 necessary). Picture must be freed using TGPicturePool::FreePicture(). If
 picture is not found 0 is returned.

const TGPicture* GetPicture(const char *name, Pixmap_t pxmap, Pixmap_t mask)

 Get picture with specified pixmap and mask from pool.
 Picture must be freed using TGPicturePool::FreePicture().
 If picture is not found 0 is returned.

const TGPicture* GetPicture(const char *name, char **xpm)

 Create picture from XPM data.
 Picture must be freed using TGPicturePool::FreePicture().
 If picture creation failed 0 is returned.

void FreePicture(const TGPicture *fpic)

 Remove picture from cache if nobody is using it anymore.

~TGPicturePool()

 Delete picture cache.

void Print(Option_t *) const

 List all pictures in the pool.

Inline Functions

        TGPicturePool TGPicturePool(const TGClient* client, const char* path)
          const char* GetPath() const
              TClass* Class()
              TClass* IsA() const
                 void ShowMembers(TMemberInspector& insp, char* parent)
                 void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
        TGPicturePool TGPicturePool(const TGPicturePool&)

Author: Fons Rademakers 01/01/98
Last update: root/gui:$Name: $:$Id: TGPicture.cxx,v 1.25 2005/11/17 19:09:28 rdm Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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