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ROOT 6.10/09 Reference Guide |
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ROOT 6.10/09 Reference Guide |
Public Member Functions | |
| TGTextLayout () | |
| virtual | ~TGTextLayout () |
| destructor More... | |
| Int_t | CharBbox (Int_t index, Int_t *x, Int_t *y, Int_t *w, Int_t *h) const |
| Use the information in the TGTextLayout token to return the bounding box for the character specified by index. More... | |
| Int_t | DistanceToText (Int_t x, Int_t y) const |
| Computes the distance in pixels from the given point to the given text layout. More... | |
| void | DrawText (Drawable_t dst, GContext_t gc, Int_t x, Int_t y, Int_t firstChar, Int_t lastChar) const |
| Use the information in the TGTextLayout object to display a multi-line, justified string of text. More... | |
| Int_t | IntersectText (Int_t x, Int_t y, Int_t w, Int_t h) const |
| Determines whether a text layout lies entirely inside, entirely outside, or overlaps a given rectangle. More... | |
| Int_t | PointToChar (Int_t x, Int_t y) const |
| Use the information in the TGTextLayout token to determine the character closest to the given point. More... | |
| void | ToPostscript (TString *dst) const |
| Outputs the contents of a text layout in Postscript format. More... | |
| void | UnderlineChar (Drawable_t dst, GContext_t gc, Int_t x, Int_t y, Int_t underline) const |
| Use the information in the TGTextLayout object to display an underline below an individual character. More... | |
 Public Member Functions inherited from TObject | |
| TObject () | |
| TObject constructor. More... | |
| TObject (const TObject &object) | |
| TObject copy ctor. More... | |
| virtual | ~TObject () |
| TObject destructor. 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... | |
| 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 selected pad for instance with: gROOT->SetSelectedPad(gPad). More... | |
| virtual void | Dump () const |
| Dump contents of object on stdout. More... | |
| virtual void | Error (const char *method, const char *msgfmt,...) const |
| Issue error message. 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 void | Fatal (const char *method, const char *msgfmt,...) const |
| Issue fatal error message. 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 const char * | GetIconName () const |
| Returns mime type name of object. More... | |
| virtual const char * | GetName () const |
| Returns name of object. More... | |
| virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
| Returns string containing info about the object at position (px,py). More... | |
| virtual Option_t * | GetOption () const |
| virtual const char * | GetTitle () const |
| Returns title of object. More... | |
| virtual UInt_t | GetUniqueID () const |
| Return the unique object id. More... | |
| virtual Bool_t | HandleTimer (TTimer *timer) |
| Execute action in response of a timer timing out. More... | |
| virtual ULong_t | Hash () const |
| Return hash value for this object. More... | |
| virtual void | Info (const char *method, const char *msgfmt,...) const |
| Issue info message. 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... | |
| void | InvertBit (UInt_t f) |
| virtual Bool_t | IsEqual (const TObject *obj) const |
| Default equal comparison (objects are equal if they have the same address in memory). More... | |
| virtual Bool_t | IsFolder () const |
| Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
| Bool_t | IsOnHeap () const |
| virtual Bool_t | IsSortable () const |
| Bool_t | IsZombie () const |
| virtual void | ls (Option_t *option="") const |
| The ls function lists the contents of a class on stdout. 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... | |
| virtual Bool_t | Notify () |
| This method must be overridden to handle object notification. More... | |
| void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
| Use this method to declare a method obsolete. More... | |
| void | operator delete (void *ptr) |
| Operator delete. More... | |
| void | operator delete[] (void *ptr) |
| Operator delete []. More... | |
| void * | operator new (size_t sz) |
| void * | operator new (size_t sz, void *vp) |
| void * | operator new[] (size_t sz) |
| void * | operator new[] (size_t sz, void *vp) |
| TObject & | operator= (const TObject &rhs) |
| TObject assignment operator. 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 void | Print (Option_t *option="") const |
| This method must be overridden when a class wants to print itself. 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... | |
| void | ResetBit (UInt_t f) |
| virtual void | SaveAs (const char *filename="", Option_t *option="") const |
| Save this object in the file specified by filename. More... | |
| virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
| Save a primitive as a C++ statement(s) on output stream "out". 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) |
| 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 | SysError (const char *method, const char *msgfmt,...) const |
| Issue system error message. More... | |
| Bool_t | TestBit (UInt_t f) const |
| Int_t | TestBits (UInt_t f) const |
| 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 void | Warning (const char *method, const char *msgfmt,...) const |
| Issue warning message. 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... | |
Protected Member Functions | |
| TGTextLayout (const TGTextLayout &tlayout) | |
| void | operator= (const TGTextLayout &tlayout) |
| Protected Member Functions inherited from TObject | |
| virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
| Interface to ErrorHandler (protected). More... | |
| void | MakeZombie () |
Protected Attributes | |
| LayoutChunk_t * | fChunks |
| const TGFont * | fFont |
| Int_t | fNumChunks |
| const char * | fString |
| Int_t | fWidth |
Friends | |
| class | TGFont |
Additional Inherited Members | |
| Public Types inherited from TObject | |
| enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
| enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
| 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) } |
| Static Public Member Functions inherited from TObject | |
| static Long_t | GetDtorOnly () |
| Return destructor only flag. More... | |
| static Bool_t | GetObjectStat () |
| Get status of object stat flag. More... | |
| static void | SetDtorOnly (void *obj) |
| Set destructor only flag. More... | |
| static void | SetObjectStat (Bool_t stat) |
| Turn on/off tracking of objects in the TObjectTable. More... | |
#include <TGFont.h>
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destructor
Definition at line 885 of file TGFont.cxx.
Use the information in the TGTextLayout token to return the bounding box for the character specified by index.
The width of the bounding box is the advance width of the character, and does not include and left- or right-bearing. Any character that extends partially outside of the text layout is considered to be truncated at the edge. Any character which is located completely outside of the text layout is considered to be zero-width and pegged against the edge.
The height of the bounding box is the line height for this font, extending from the top of the ascent to the bottom of the descent. Information about the actual height of the individual letter is not available.
A text layout that contains no characters is considered to contain a single zero-width placeholder character.
The return value is 0 if the index did not specify a character in the text layout, or non-zero otherwise. In that case, *bbox is filled with the bounding box of the character.
layout – Layout information, from a previous call to ComputeTextLayout(). index – The index of the character whose bbox is desired. x, y – Filled with the upper-left hand corner, in pixels, of the bounding box for the character specified by index, if non-NULL. w, h – Filled with the width and height of the bounding box for the character specified by index, if non-NULL.
Definition at line 1094 of file TGFont.cxx.
Computes the distance in pixels from the given point to the given text layout.
Non-displaying space characters that occur at the end of individual lines in the text layout are ignored for hit detection purposes.
The return value is 0 if the point (x, y) is inside the text layout. If the point isn't inside the text layout then the return value is the distance in pixels from the point to the text item.
x, y – Coordinates of point to check, with respect to the upper-left corner of the text layout (in pixels).
Definition at line 1176 of file TGFont.cxx.
| void TGTextLayout::DrawText | ( | Drawable_t | dst, |
| GContext_t | gc, | ||
| Int_t | x, | ||
| Int_t | y, | ||
| Int_t | firstChar, | ||
| Int_t | lastChar | ||
| ) | const |
Use the information in the TGTextLayout object to display a multi-line, justified string of text.
This procedure is useful for simple widgets that need to display single-font, multi-line text and want TGFont to handle the details.
dst – Window or pixmap in which to draw. gc – Graphics context to use for drawing text. x, y – Upper-left hand corner of rectangle in which to draw (pixels). firstChar – The index of the first character to draw from the given text item. 0 specfies the beginning. lastChar – The index just after the last character to draw from the given text item. A number < 0 means to draw all characters.
Definition at line 908 of file TGFont.cxx.
Determines whether a text layout lies entirely inside, entirely outside, or overlaps a given rectangle.
Non-displaying space characters that occur at the end of individual lines in the text layout are ignored for intersection calculations.
The return value is -1 if the text layout is entirely outside of the rectangle, 0 if it overlaps, and 1 if it is entirely inside of the rectangle.
x, y – Upper-left hand corner, in pixels, of rectangular area to compare with text layout. Coordinates are with respect to the upper-left hand corner of the text layout itself. w, h – The width and height of the above rectangular area, in pixels.
Definition at line 1242 of file TGFont.cxx.
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Use the information in the TGTextLayout token to determine the character closest to the given point.
The point must be specified with respect to the upper-left hand corner of the text layout, which is considered to be located at (0, 0).
Any point whose y-value is less that 0 will be considered closest to the first character in the text layout; any point whose y-value is greater than the height of the text layout will be considered closest to the last character in the text layout.
Any point whose x-value is less than 0 will be considered closest to the first character on that line; any point whose x-value is greater than the width of the text layout will be considered closest to the last character on that line.
The return value is the index of the character that was closest to the point. Given a text layout with no characters, the value 0 will always be returned, referring to a hypothetical zero-width placeholder character.
Definition at line 988 of file TGFont.cxx.
Outputs the contents of a text layout in Postscript format.
The set of lines in the text layout will be rendered by the user supplied Postscript function. The function should be of the form:
justify x y string function --
Justify is -1, 0, or 1, depending on whether the following string should be left, center, or right justified, x and y is the location for the origin of the string, string is the sequence of characters to be printed, and function is the name of the caller-provided function; the function should leave nothing on the stack.
The meaning of the origin of the string (x and y) depends on the justification. For left justification, x is where the left edge of the string should appear. For center justification, x is where the center of the string should appear. And for right justification, x is where the right edge of the string should appear. This behavior is necessary because, for example, right justified text on the screen is justified with screen metrics. The same string needs to be justified with printer metrics on the printer to appear in the correct place with respect to other similarly justified strings. In all circumstances, y is the location of the baseline for the string.
result is modified to hold the Postscript code that will render the text layout.
Definition at line 1319 of file TGFont.cxx.
| void TGTextLayout::UnderlineChar | ( | Drawable_t | dst, |
| GContext_t | gc, | ||
| Int_t | x, | ||
| Int_t | y, | ||
| Int_t | underline | ||
| ) | const |
Use the information in the TGTextLayout object to display an underline below an individual character.
This procedure does not draw the text, just the underline.
This procedure is useful for simple widgets that need to display single-font, multi-line text with an individual character underlined and want TGFont to handle the details. To display larger amounts of underlined text, construct and use an underlined font.
dst – Window or pixmap in which to draw. gc – Graphics context to use for drawing text. x, y – Upper-left hand corner of rectangle in which to draw (pixels). underline – Index of the single character to underline, or -1 for no underline.
Definition at line 955 of file TGFont.cxx.
ROOT 6.10/09 - Reference Guide Generated on Thu May 31 2018 12:14:48 using Doxygen 1.8.13.