GuidelineStateDeployedConstantYAbstract Class Reference

Compute geometry for deployed constant y Guideline. More...

#include <GuidelineStateDeployedConstantYAbstract.h>

Inheritance diagram for GuidelineStateDeployedConstantYAbstract:

Collaboration diagram for GuidelineStateDeployedConstantYAbstract:

Public Member Functions
	GuidelineStateDeployedConstantYAbstract (GuidelineStateContext &context)
	Single constructor.
virtual	~GuidelineStateDeployedConstantYAbstract ()
virtual QPointF	convertGraphCoordinateToScreenPoint (double valueGraph) const
	Convert single graph coordinate into screen point pair.
virtual double	convertScreenPointToGraphCoordinate (const QPointF &posScreen) const
	Convert screen point pair into single graph coordinate.
virtual EllipseParameters	pointToEllipse (const QPointF &posScreen) const
	Return ellipse representing constant range, that passes through the specified point.
virtual QLineF	pointToLine (const QPointF &posScreen) const
	Return line parallel to an axis line, that passes through the specified point.
virtual void	updateWithLatestTransformation ()
	Update given Transformation in GuidelineStateContext.
Public Member Functions inherited from GuidelineStateDeployedAbstract
	GuidelineStateDeployedAbstract (GuidelineStateContext &context)
	Single constructor.
virtual	~GuidelineStateDeployedAbstract ()
virtual void	end ()
	Transition out of state.
virtual void	handleMouseRelease (const QPointF &posScene)
	At the end of dragging, clone the Guideline that owns the state machine where these states live.
virtual void	handleTimeout ()
	Handle timeout from Appearing state.
Public Member Functions inherited from GuidelineStateAbstractBase
	GuidelineStateAbstractBase (GuidelineStateContext &context)
	Single constructor.
virtual	~GuidelineStateAbstractBase ()
virtual void	begin ()=0
	Transition into state.
virtual bool	doPaint () const =0
	Allow/skip painting of the owner Guideline.
virtual void	handleActiveChange (bool active)=0
	DigitizeState change so active status may (or may not) be toggled.
virtual void	handleGuidelineMode (bool visibility, bool locked)=0
	User toggled Guideline visibility and/or locked mode.
virtual void	handleHoverEnterEvent ()=0
	If transparent then make visible when hover starts.
virtual void	handleHoverLeaveEvent ()=0
	If previously transparent before hover enter then make transparent again.
virtual void	handleMousePress (const QPointF &posScene)=0
	At the start of dragging, convert the Guideline into an invisible handle and visible slaved deployed Guideline.
virtual QString	stateName () const =0
	Name of state as a string for debugging only.

Additional Inherited Members
Protected Member Functions inherited from GuidelineStateDeployedAbstract
void	beginCommon (bool hovering, bool locked)
	Initialization common to all states.
Protected Member Functions inherited from GuidelineStateAbstractBase
GuidelineStateContext &	context () const
	Context in charge of the state classes.
void	handleMousePressCommon (const QPointF &posAbsolute, GuidelineState stateHandle, GuidelineState stateDeployed)
	Common mouse press handling.
QRectF	sceneRect () const
	Scene rectangle in screen coordinates (=pixels).

Detailed Description

Compute geometry for deployed constant y Guideline.

Definition at line 13 of file GuidelineStateDeployedConstantYAbstract.h.

Constructor & Destructor Documentation

GuidelineStateDeployedConstantYAbstract()

GuidelineStateDeployedConstantYAbstract::GuidelineStateDeployedConstantYAbstract

(

GuidelineStateContext &

context

)

Single constructor.

Definition at line 15 of file GuidelineStateDeployedConstantYAbstract.cpp.

                                                                                                                :
  GuidelineStateDeployedAbstract (context)
{
}

~GuidelineStateDeployedConstantYAbstract()

GuidelineStateDeployedConstantYAbstract::~GuidelineStateDeployedConstantYAbstract ( )

virtual

Definition at line 20 of file GuidelineStateDeployedConstantYAbstract.cpp.

{
}

Member Function Documentation

convertGraphCoordinateToScreenPoint()

QPointF GuidelineStateDeployedConstantYAbstract::convertGraphCoordinateToScreenPoint ( double valueGraph ) const

virtual

Convert single graph coordinate into screen point pair.

Implements GuidelineStateAbstractBase.

Definition at line 24 of file GuidelineStateDeployedConstantYAbstract.cpp.

{
  const double ARBITRARY_X = 1.0; // Value that is legal in all cases, including log scaling
  QPointF posScreen;
  context().transformation().transformRawGraphToScreen (QPointF (ARBITRARY_X,
                                                                 valueGraph),
                                                        posScreen);
 
  LOG4CPP_DEBUG_S ((*mainCat)) << "GuidelineStateDeployedConstantYAbstract::convertGraphCoordinateToScreenPoint"
                               << " pos=(" << posScreen.x() << ", " << posScreen.y() << ")";
 
  return posScreen;
}

convertScreenPointToGraphCoordinate()

double GuidelineStateDeployedConstantYAbstract::convertScreenPointToGraphCoordinate ( const QPointF & posScreen ) const

virtual

Convert screen point pair into single graph coordinate.

Implements GuidelineStateAbstractBase.

Definition at line 38 of file GuidelineStateDeployedConstantYAbstract.cpp.

{
  QPointF posGraph;
  context().transformation().transformScreenToRawGraph (posScreen,
                                                        posGraph);
 
  LOG4CPP_DEBUG_S ((*mainCat)) << "GuidelineStateDeployedConstantYAbstract::convertScreenPointToGraphCoordinate"
                               << " pos=(" << posGraph.x() << ", " << posGraph.y() << ")";
 
  return posGraph.y();
}

pointToEllipse()

EllipseParameters GuidelineStateDeployedConstantYAbstract::pointToEllipse ( const QPointF & posScreen ) const

virtual

Return ellipse representing constant range, that passes through the specified point.

Implements GuidelineStateAbstractBase.

Definition at line 50 of file GuidelineStateDeployedConstantYAbstract.cpp.

{
  // pointToLine applies in this state
  return EllipseParameters();
}

pointToLine()

QLineF GuidelineStateDeployedConstantYAbstract::pointToLine ( const QPointF & posScreen ) const

virtual

Return line parallel to an axis line, that passes through the specified point.

Implements GuidelineStateAbstractBase.

Definition at line 56 of file GuidelineStateDeployedConstantYAbstract.cpp.

{
  GuidelineProjectorConstantY projector;
 
  return projector.fromPosScreen (context().transformation(),
                                  sceneRect (),
                                  posScreen);
}

updateWithLatestTransformation()

void GuidelineStateDeployedConstantYAbstract::updateWithLatestTransformation ( )

virtual

Update given Transformation in GuidelineStateContext.

Implements GuidelineStateAbstractBase.

Definition at line 65 of file GuidelineStateDeployedConstantYAbstract.cpp.

{
  LOG4CPP_DEBUG_S ((*mainCat)) << "GuidelineStateDeployedConstantYAbstract::updateWithLatestTransformation";
 
  if (!context().transformation().transformIsDefined()) {
    // Discard this Guideline immediately if the transformation transitions to undefined
    context().requestStateTransition(GUIDELINE_STATE_DISCARDED);
  } else {
 
    GuidelineProjectorConstantY projector;
 
    GuidelineLine *line = dynamic_cast<GuidelineLine*> (&context().guideline());
    line->setLine (projector.fromCoordinateY (context().transformation(),
                                              sceneRect (),
                                              context().posCursorGraph ().y()));
  }
}

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

• Guideline/GuidelineStateDeployedConstantYAbstract.h
• Guideline/GuidelineStateDeployedConstantYAbstract.cpp