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ROOT
6.07/01
Reference Guide
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Public Member Functions | |
TGFontPool (TGClient *client) | |
Create a font pool. More... | |
virtual | ~TGFontPool () |
Cleanup font pool. More... | |
TGFont * | GetFont (const char *font, Bool_t fixedDefault=kTRUE) |
Get the specified font. More... | |
TGFont * | GetFont (const TGFont *font) |
Use font, i.e. More... | |
TGFont * | GetFont (FontStruct_t font) |
Use font, i.e. increases ref count of specified font. More... | |
TGFont * | GetFont (const char *family, Int_t ptsize, Int_t weight, Int_t slant) |
Returns font specified bay family, pixel/point size, weight and slant negative value of ptsize means size in pixels positive value of ptsize means size in points. More... | |
void | FreeFont (const TGFont *font) |
Free font. If ref count is 0 delete font. More... | |
TGFont * | FindFont (FontStruct_t font) const |
Find font based on its font struct. Returns 0 if font is not found. More... | |
TGFont * | FindFontByHandle (FontH_t font) const |
Find font based on its font handle. Returns 0 if font is not found. More... | |
char ** | GetAttributeInfo (const FontAttributes_t *fa) |
Return information about the font attributes as an array of strings. More... | |
void | FreeAttributeInfo (char **info) |
Free attributes info. More... | |
char ** | GetFontFamilies () |
Return information about the font families that are available on the current display. More... | |
void | FreeFontFamilies (char **f) |
Delete an array of families allocated GetFontFamilies() method. More... | |
Bool_t | ParseFontName (const char *string, FontAttributes_t *fa) |
Converts a string into a set of font attributes that can be used to construct a font. More... | |
const char * | NameOfFont (TGFont *font) |
Given a font, return a textual string identifying it. More... | |
void | Print (Option_t *option="") const |
List all fonts in the pool. More... | |
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TGObject () | |
TGObject (const TGObject &tgo) | |
virtual | ~TGObject () |
Handle_t | GetId () const |
TGClient * | GetClient () const |
ULong_t | Hash () const |
Return hash value for this object. More... | |
Bool_t | IsEqual (const TObject *obj) const |
Equal comparison (TGObjects are equal if they have the same window identifier). More... | |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. More... | |
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TObject () | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. More... | |
virtual | ~TObject () |
TObject destructor. More... | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. More... | |
virtual void | Browse (TBrowser *b) |
Browse object. May be overridden for another default action. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Clear (Option_t *="") |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare abstract method. More... | |
virtual void | Copy (TObject &object) const |
Copy this to obj. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. More... | |
virtual void | Draw (Option_t *option="") |
Default Draw method for all objects. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current pad. More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
Execute method on this object with the given parameter string, e.g. More... | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
Execute method on this object with parameters stored in the TObjArray. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). More... | |
virtual TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. More... | |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual Option_t * | GetOption () const |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". More... | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. More... | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. More... | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
virtual Bool_t | IsSortable () const |
Bool_t | IsOnHeap () const |
Bool_t | IsZombie () const |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
virtual void | ls (Option_t *option="") const |
The ls function lists the contents of a class on stdout. More... | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. More... | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. More... | |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove this object from a list. More... | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". More... | |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. More... | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. More... | |
virtual void | UseCurrentStyle () |
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. More... | |
void * | operator new (size_t sz) |
void * | operator new[] (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz, void *vp) |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
void | SetBit (UInt_t f) |
void | ResetBit (UInt_t f) |
Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
void | InvertBit (UInt_t f) |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. More... | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. More... | |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. More... | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
void | MayNotUse (const char *method) const |
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
Protected Member Functions | |
const char * | GetUid (const char *string) |
Given a string, this procedure returns a unique identifier for the string. More... | |
Bool_t | ParseXLFD (const char *string, XLFDAttributes_t *xa) |
Break up a fully specified XLFD into a set of font attributes. More... | |
TGFont * | GetFontFromAttributes (FontAttributes_t *fa, TGFont *fontPtr) |
Given a desired set of attributes for a font, find a font with the closest matching attributes and create a new TGFont object. More... | |
int | FindStateNum (const FontStateMap_t *map, const char *strKey) |
Given a lookup table, map a string to a number in the table. More... | |
const char * | FindStateString (const FontStateMap_t *map, int numKey) |
Given a lookup table, map a number to a string in the table. More... | |
Bool_t | FieldSpecified (const char *field) |
Helper function for ParseXLFD(). More... | |
TGFont * | GetNativeFont (const char *name, Bool_t fixedDefault=kTRUE) |
The return value is a pointer to an TGFont object that represents the native font. More... | |
TGFont * | MakeFont (TGFont *font, FontStruct_t fontStruct, const char *fontName) |
Helper for GetNativeFont() and GetFontFromAttributes(). More... | |
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TGObject & | operator= (const TGObject &tgo) |
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void | MakeZombie () |
virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
Private Member Functions | |
TGFontPool (const TGFontPool &fp) | |
TGFontPool & | operator= (const TGFontPool &fp) |
Private Attributes | |
THashTable * | fList |
THashTable * | fUidTable |
THashTable * | fNamedTable |
Additional Inherited Members | |
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enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
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static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
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Handle_t | fId |
TGClient * | fClient |
#include <TGFont.h>
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TGFontPool::TGFontPool | ( | TGClient * | client | ) |
Create a font pool.
Definition at line 1513 of file TGFont.cxx.
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Cleanup font pool.
Definition at line 1529 of file TGFont.cxx.
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Helper function for ParseXLFD().
Determines if a field in the XLFD was set to a non-null, non-don't-care value.
The return value is kFALSE if the field in the XLFD was not set and should be ignored, kTRUE otherwise.
field – The field of the XLFD to check. Strictly speaking, only when the string is "*" does it mean don't-care. However, an unspecified or question mark is also interpreted as don't-care.
Definition at line 2231 of file TGFont.cxx.
Referenced by ParseXLFD().
TGFont * TGFontPool::FindFont | ( | FontStruct_t | font | ) | const |
Find font based on its font struct. Returns 0 if font is not found.
Definition at line 1729 of file TGFont.cxx.
Referenced by TGuiBldDragManager::ChangeProperties(), TGuiBldDragManager::ChangeTextFont(), GetFont(), TGTextButton::Init(), TGTextButton::Layout(), TGSplitButton::Layout(), TGLabel::SavePrimitive(), TGSplitButton::SetText(), and TGSplitButton::TGSplitButton().
Find font based on its font handle. Returns 0 if font is not found.
Definition at line 1746 of file TGFont.cxx.
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Given a lookup table, map a string to a number in the table.
If strKey was equal to the string keys of one of the elements in the table, returns the numeric key of that element. Returns the numKey associated with the last element (the NULL string one) in the table if strKey was not equal to any of the string keys in the table.
Definition at line 2189 of file TGFont.cxx.
Referenced by ParseFontName(), and ParseXLFD().
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Given a lookup table, map a number to a string in the table.
If numKey was equal to the numeric key of one of the elements in the table, returns the string key of that element. Returns NULL if numKey was not equal to any of the numeric keys in the table
Definition at line 2212 of file TGFont.cxx.
Referenced by GetAttributeInfo(), and GetFont().
void TGFontPool::FreeAttributeInfo | ( | char ** | info | ) |
Free attributes info.
Definition at line 1844 of file TGFont.cxx.
Free font. If ref count is 0 delete font.
Definition at line 1703 of file TGFont.cxx.
Referenced by TGClient::FreeFont(), and TGLabel::~TGLabel().
void TGFontPool::FreeFontFamilies | ( | char ** | f | ) |
Delete an array of families allocated GetFontFamilies() method.
Definition at line 2317 of file TGFont.cxx.
char ** TGFontPool::GetAttributeInfo | ( | const FontAttributes_t * | fa | ) |
Return information about the font attributes as an array of strings.
An array of FONT_NUMFIELDS strings is returned holding the value of the font attributes in the following order: family size weight slant underline overstrike
Definition at line 1790 of file TGFont.cxx.
Get the specified font.
The font can be one of the following forms: XLFD (see X documentation) "Family [size [style] [style ...]]" Returns 0 if error or no font can be found. If fixedDefault is false the "fixed" font will not be substituted as fallback when the asked for font does not exist.
Definition at line 1543 of file TGFont.cxx.
Referenced by TGClient::GetFont(), GetFont(), TGTextButton::Init(), TGTextButton::Layout(), TGSplitButton::Layout(), TGSplitButton::SetText(), TGLabel::SetTextFont(), TGLabel::TGLabel(), and TGSplitButton::TGSplitButton().
Use font, i.e.
increases ref count of specified font. Returns 0 if font is not found.
Definition at line 1640 of file TGFont.cxx.
TGFont * TGFontPool::GetFont | ( | FontStruct_t | font | ) |
Use font, i.e. increases ref count of specified font.
Definition at line 1655 of file TGFont.cxx.
Returns font specified bay family, pixel/point size, weight and slant negative value of ptsize means size in pixels positive value of ptsize means size in points.
For example: TGFont *font = fpool->GetFont("helvetica", -9, kFontWeightNormal, kFontSlantRoman); font->Print();
Definition at line 1681 of file TGFont.cxx.
char ** TGFontPool::GetFontFamilies | ( | ) |
Return information about the font families that are available on the current display.
An array of strings is returned holding a list of all the available font families. The array is terminated with a NULL pointer.
Definition at line 2258 of file TGFont.cxx.
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Given a desired set of attributes for a font, find a font with the closest matching attributes and create a new TGFont object.
The return value is a pointer to a TGFont object that represents the font with the desired attributes. If a font with the desired attributes could not be constructed, some other font will be substituted automatically.
Every call to this procedure returns a new TGFont object, even if the specified attributes have already been seen before.
Definition at line 2340 of file TGFont.cxx.
Referenced by GetFont().
The return value is a pointer to an TGFont object that represents the native font.
If a native font by the given name could not be found, the return value is NULL.
Every call to this procedure returns a new TGFont object, even if the name has already been seen before. The caller should call FreeFont when the font is no longer needed.
Definition at line 2551 of file TGFont.cxx.
Referenced by GetFont().
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Given a string, this procedure returns a unique identifier for the string.
This procedure returns a pointer to a new char string corresponding to the "string" argument. The new string has a value identical to string (strcmp will return 0), but it's guaranteed that any other calls to this procedure with a string equal to "string" will return exactly the same result (i.e. can compare pointer values directly, without having to call strcmp on what they point to).
Definition at line 1770 of file TGFont.cxx.
Referenced by MakeFont(), ParseFontName(), and ParseXLFD().
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protected |
Helper for GetNativeFont() and GetFontFromAttributes().
Creates and intializes a new TGFont object.
font – If non-NULL, store the information in this existing TGFont object, rather than creating a new one; the existing contents of the font will be released. If NULL, a new TGFont object is created. fontStruct – information about font. fontName – The string passed to TVirtualX::LoadQueryFont() to construct the fontStruct.
Definition at line 2576 of file TGFont.cxx.
Referenced by GetFont(), GetFontFromAttributes(), and GetNativeFont().
const char * TGFontPool::NameOfFont | ( | TGFont * | font | ) |
Given a font, return a textual string identifying it.
Definition at line 2246 of file TGFont.cxx.
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Bool_t TGFontPool::ParseFontName | ( | const char * | string, |
FontAttributes_t * | fa | ||
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Converts a string into a set of font attributes that can be used to construct a font.
The string can be one of the following forms: XLFD (see X documentation) "Family [size [style] [style ...]]"
The return value is kFALSE if the object was syntactically invalid. Otherwise, fills the font attribute buffer with the values parsed from the string and returns kTRUE. The structure must already be properly initialized.
Definition at line 1947 of file TGFont.cxx.
Referenced by GetFont().
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protected |
Break up a fully specified XLFD into a set of font attributes.
Return value is kFALSE if string was not a fully specified XLFD. Otherwise, fills font attribute buffer with the values parsed from the XLFD and returns kTRUE.
string – Parseable font description string. xa – XLFD attributes structure whose fields are to be modified. Structure must already be properly initialized.
Definition at line 2038 of file TGFont.cxx.
Referenced by GetFontFromAttributes(), MakeFont(), and ParseFontName().
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Definition at line 235 of file TGFont.h.
Referenced by FindFont(), FindFontByHandle(), FreeFont(), GetFont(), Print(), TGFontPool(), and ~TGFontPool().
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Definition at line 237 of file TGFont.h.
Referenced by FreeFont(), GetFont(), and TGFontPool().
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Definition at line 236 of file TGFont.h.
Referenced by GetUid(), and TGFontPool().