gcp::Fragment Class Reference

Atoms groups. More...

#include <gcp/fragment.h>

Inheritance diagram for gcp::Fragment:

gcp::TextObject gcu::Object

List of all members.

Public Member Functions

 Fragment ()
 Fragment (double x, double y)
virtual ~Fragment ()
void AddItem ()
void UpdateItem ()
void SetSelected (int state)
xmlNodePtr Save (xmlDocPtr xml) const
xmlNodePtr SaveSelection (xmlDocPtr xml) const
bool Load (xmlNodePtr node)
bool OnChanged (bool save)
void AnalContent ()
void AnalContent (unsigned start, unsigned &end)
Object * GetAtomAt (double x, double y, double z=0.)
void Move (double x, double y, double z=0)
void Transform2D (gcu::Matrix2D &m, double x, double y)
void OnChangeAtom ()
AtomGetAtom ()
int GetElementAtPos (unsigned start, unsigned &end)
int GetChargePosition (FragmentAtom *pAtom, unsigned char &Pos, double Angle, double &x, double &y)
int GetAvailablePosition (double &x, double &y)
bool GetPosition (double angle, double &x, double &y)
bool Validate ()
double GetYAlign ()
bool SetProperty (unsigned property, char const *value)
bool Analyze ()
void Update ()


Detailed Description

Atoms groups.

Represents atoms groups displayed as a string. Currntly, the string is not fully parsed, so that some non sense strings might be accepted. Anyway, this will not always be the case in the future.

Definition at line 44 of file fragment.h.


Constructor & Destructor Documentation

gcp::Fragment::Fragment (  ) 

The default constructor.

gcp::Fragment::Fragment ( double  x,
double  y 
)

Parameters:
x the x position of the new fragment.
y the y position of the new fragment.
Constructs a new fragment and position it. x and y are the position of the main atom or residue in the fragment.

virtual gcp::Fragment::~Fragment (  )  [virtual]

The destructor.


Member Function Documentation

void gcp::Fragment::AddItem (  ) 

Used to add a representation of the fragment in the view.

void gcp::Fragment::AnalContent ( unsigned  start,
unsigned &  end 
)

Parameters:
start the start fo the substring to parse, in bytes.
end the end fo the substring to parse, in bytes.
Analyses a substring.

void gcp::Fragment::AnalContent (  ) 

Analyses the whole contents.

bool gcp::Fragment::Analyze (  ) 

Analyses the text in the fragment. This calls gcp::Fragment::AnalContent() and updates the attribute list.

Atom* gcp::Fragment::GetAtom (  )  [inline]

Returns:
the main atom, which might have a bond.

Definition at line 152 of file fragment.h.

Object* gcp::Fragment::GetAtomAt ( double  x,
double  y,
double  z = 0. 
) [virtual]

Parameters:
x the x coordinate
y the y coordinate
z the z coordinate (unused)
Returns:
a pointer to the Atom correpoding to the symbol at or near the position defined by the coordinates passed as parameters, if any.

Reimplemented from gcu::Object.

int gcp::Fragment::GetAvailablePosition ( double &  x,
double &  y 
)

Parameters:
x the x position.
y the y position.
This method finds an available position for drawing a charge sign or electrons and returns it as a symbolic value (see POSITION_E, POSITION_N,...). The x and y are updated so that they give the absolute position.
Returns:
an available position.

int gcp::Fragment::GetChargePosition ( FragmentAtom pAtom,
unsigned char &  Pos,
double  Angle,
double &  x,
double &  y 
)

Parameters:
pAtom the main atom which will get the local charge.
Pos the approximate position of the charge.
Angle the angle from horizontal left.
x the x position of the charge symbol.
y the y position of the charge symbol.
If pAtom is not the main atom of the fragment, 0 is returned and Pos is not updated. On input Pos can be one of POSITION_E, POSITION_N,... or 0xff, in which case, it will be given a default value. x and y are set to the position where the charge sign should be displayed usding the alignment code returned by this method.
Returns:
a number to set how the charge symbol should be aligned relative to its position. Possible values are:
  • −2: center top.
  • −1: right.
  • 0: center.
  • 1: left.
  • 2: center bottom.

int gcp::Fragment::GetElementAtPos ( unsigned  start,
unsigned &  end 
)

Parameters:
start the start position of the atomic symbol.
end the end position of the atomic symbol.
Returns:
the atomic number corresponding to the symbol starting at start, if any, or 0. end is updated accordingly.

bool gcp::Fragment::GetPosition ( double  angle,
double &  x,
double &  y 
)

Parameters:
angle the angle at which a charge sign should be displayed.
x the x position.
y the y position.
Returns:
false and do not update the coordinates.

double gcp::Fragment::GetYAlign (  )  [virtual]

Returns:
the y coordinate at half height of a carbon atom symbol if any was present.

Reimplemented from gcu::Object.

bool gcp::Fragment::Load ( xmlNodePtr  node  )  [virtual]

Parameters:
node a pointer to the xmlNode containing the serialized fragment.
Used to load a frafment in memory. The Fragment must already exist.
Returns:
true on succes, false otherwise.

Reimplemented from gcp::TextObject.

void gcp::Fragment::Move ( double  x,
double  y,
double  z = 0 
) [virtual]

Parameters:
x the x component of the transation vector.
y the y component of the transation vector.
z the z component of the transation vector.
Moves the fragment.

Reimplemented from gcp::TextObject.

void gcp::Fragment::OnChangeAtom (  ) 

Called by the framework when the user changes the nature of an atom using the element tool.

bool gcp::Fragment::OnChanged ( bool  save  )  [virtual]

Parameters:
save whether the text should be saved for undo/redo operations.
Called after any change in the text.

Implements gcp::TextObject.

xmlNodePtr gcp::Fragment::Save ( xmlDocPtr  xml  )  const [virtual]

Parameters:
xml the xmlDoc used to save the document.
Used to save the fragment to the xmlDoc.
Returns:
the xmlNode containing the serialized fragment.

Reimplemented from gcu::Object.

xmlNodePtr gcp::Fragment::SaveSelection ( xmlDocPtr  xml  )  const

Parameters:
xml the xmlDoc used for clipboard operations.
Saves the currently selected text inside the fragment. This method is used by the framework when editing the fragment.
Returns:
the xmlNode containing the serialized selection.

bool gcp::Fragment::SetProperty ( unsigned  property,
char const *  value 
) [virtual]

Parameters:
property the property id as defined in objprops.h
value the property value as a string
Used when loading to set properties for the fragment. This method supports GCU_PROP_POS2D, GCU_PROP_TEXT_TEXT, GCU_PROP_FRAGMENT_ATOM_START, and GCU_PROP_FRAGMENT_ATOM_ID.
Returns:
true if the property could be set, or if the property is not relevant, false otherwise.

Reimplemented from gcu::Object.

void gcp::Fragment::SetSelected ( int  state  ) 

Parameters:
state the selection state of the fragment.
Used to set the selection state of the fragment inside the widget. The values of state might be gcp::SelStateUnselected, gcp::SelStateSelected, gcp::SelStateUpdating, or gcp::SelStateErasing.

void gcp::Fragment::Transform2D ( gcu::Matrix2D m,
double  x,
double  y 
) [virtual]

Parameters:
m the Matrix2D of the transformation.
x the x component of the center of the transformation.
y the y component of the center of the transformation.
Moves and/or transform an object.

Reimplemented from gcu::Object.

void gcp::Fragment::Update (  ) 

Changes the order of the symbols if necessary when a bond is at an extremity of the fragment.

void gcp::Fragment::UpdateItem (  ) 

Used to update the representation of the fragment in the view.

bool gcp::Fragment::Validate (  ) 

Validates the contents of the fragment text, and display error messages when necessary.


The documentation for this class was generated from the following file:

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