KoParameterChangeStrategy Class Reference

Strategy for changing control points of parametric shapes. More...

#include <KoParameterChangeStrategy.h>

Inheritance diagram for KoParameterChangeStrategy:

Public Member Functions
KUndo2Command *	createCommand () override
void	finishInteraction (Qt::KeyboardModifiers modifiers) override
void	handleMouseMove (const QPointF &mouseLocation, Qt::KeyboardModifiers modifiers) override
	KoParameterChangeStrategy (KoToolBase *tool, KoParameterShape *parameterShape, int handleId)
	~KoParameterChangeStrategy () override
Public Member Functions inherited from KoInteractionStrategy
virtual void	cancelInteraction ()
	KoInteractionStrategy (KoToolBase *parent)
	constructor
virtual void	paint (QPainter &painter, const KoViewConverter &converter)
KoToolBase *	tool () const
virtual	~KoInteractionStrategy ()
	Destructor.

Protected Member Functions
	KoParameterChangeStrategy (KoParameterChangeStrategyPrivate &)
	constructor
Protected Member Functions inherited from KoInteractionStrategy
uint	decorationThickness () const
uint	grabSensitivity () const
	Convenience function to get the global grab sensitivity.
uint	handleRadius () const
	Convenience function to get the global handle radius.
	KoInteractionStrategy (KoInteractionStrategyPrivate &)
	constructor

Additional Inherited Members
Protected Attributes inherited from KoInteractionStrategy
KoInteractionStrategyPrivate *	d_ptr

Detailed Description

Strategy for changing control points of parametric shapes.

Definition at line 18 of file KoParameterChangeStrategy.h.

Constructor & Destructor Documentation

KoParameterChangeStrategy() [1/2]

KoParameterChangeStrategy::KoParameterChangeStrategy	(	KoToolBase *	tool,
		KoParameterShape *	parameterShape,
		int	handleId )

Constructs a strategy for changing control points of parametric shapes.

Parameters

tool	the tool the strategy belongs to
parameterShape	the parametric shapes the strategy is working on
handleId	the id of the handle to modify

Definition at line 16 of file KoParameterChangeStrategy.cpp.

    : KoInteractionStrategy(*(new KoParameterChangeStrategyPrivate(tool, parameterShape, handleId)))
{
    Q_D(KoParameterChangeStrategy);
    d->tool->canvas()->snapGuide()->setIgnoredShapes({parameterShape});
}

~KoParameterChangeStrategy()

KoParameterChangeStrategy::~KoParameterChangeStrategy ( )

override

Definition at line 29 of file KoParameterChangeStrategy.cpp.

{
}

KoParameterChangeStrategy() [2/2]

KoParameterChangeStrategy::KoParameterChangeStrategy ( KoParameterChangeStrategyPrivate & dd )

protected

constructor

Definition at line 23 of file KoParameterChangeStrategy.cpp.

: KoInteractionStrategy(dd)
{
 
}

Member Function Documentation

createCommand()

KUndo2Command * KoParameterChangeStrategy::createCommand ( )

overridevirtual

For interactions that are undo-able this method should be implemented to return such a command. Implementations should return 0 otherwise.

Returns

a command, or 0.

Implements KoInteractionStrategy.

Definition at line 44 of file KoParameterChangeStrategy.cpp.

{
    Q_D(KoParameterChangeStrategy);
 
    d->tool->canvas()->snapGuide()->reset();
 
    KoParameterHandleMoveCommand *cmd = 0;
    // check if handle position changed
    if (d->startPoint != QPointF(0, 0) && d->startPoint != d->releasePoint) {
        cmd = new KoParameterHandleMoveCommand(d->parameterShape, d->handleId, d->startPoint, d->releasePoint, d->lastModifierUsed);
    }
    return cmd;
}

finishInteraction()

void KoParameterChangeStrategy::finishInteraction ( Qt::KeyboardModifiers modifiers )

overridevirtual

Override to make final changes to the data on the end of an interaction.

Implements KoInteractionStrategy.

Definition at line 58 of file KoParameterChangeStrategy.cpp.

{
}

handleMouseMove()

void KoParameterChangeStrategy::handleMouseMove ( const QPointF & mouseLocation, Qt::KeyboardModifiers modifiers )

overridevirtual

Extending classes should implement this method to update the selectedShapes based on the new mouse position.

Parameters

mouseLocation	the new location in pt
modifiers	OR-ed set of keys pressed.

Implements KoInteractionStrategy.

Definition at line 33 of file KoParameterChangeStrategy.cpp.

{
    Q_D(KoParameterChangeStrategy);
 
    const QPointF snappedPosition = d->tool->canvas()->snapGuide()->snap(mouseLocation, modifiers);
 
    d->parameterShape->moveHandle(d->handleId, snappedPosition, modifiers);
    d->lastModifierUsed = modifiers;
    d->releasePoint = snappedPosition;
}

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

• libs/flake/tools/KoParameterChangeStrategy.h
• libs/flake/tools/KoParameterChangeStrategy.cpp