Handles parts of the user interaction for a Plot by registering itself as an event filter for its QwtPlotCanvas. More...

#include <CanvasPicker.h>

Signals
void	drawTextOff ()
void	modified ()
void	selectPlot ()
void	showMarkerPopupMenu ()
void	showPlotDialog (int)
void	viewImageDialog ()
void	viewLineDialog ()
void	viewTextDialog ()

Public Member Functions
	CanvasPicker (Graph *plot)
void	disableEditing ()
	Disable editing of d_editing_marker on a TAB-key event.
virtual bool	eventFilter (QObject , QEvent )
void	selectPeak (const QPoint &p)
void	selectPoints (int n)

Private Member Functions
void	drawLineMarker (const QPoint &, bool endArrow)
void	drawTextMarker (const QPoint &)
Graph *	plot ()
	Return my parent as a Graph.
bool	selectMarker (const QMouseEvent *e)
	Selects and highlights the marker at the given position.

Private Attributes
ArrowMarker *	d_editing_marker
	The marker that is currently being edited, or NULL. Editing does explicitly not inlude moving and resizing, which are being handled by SelectionMoveResizer (see Graph::d_markers_selector). Currently, only ArrowMarker provides any other form of editing, but this really should be generalized. See ImageMarker for details.
QPoint	endLinePoint
Plot *	plotWidget
	The Plot I handle user interaction for.
bool	pointSelected
QPoint	startLinePoint

Detailed Description

Handles parts of the user interaction for a Plot by registering itself as an event filter for its QwtPlotCanvas.

CanvasPicker relies heavily on its parent being the Graph that owns the Plot it operates on. Additionally, parts of the code use Graph::plotWidget instead of CanvasPicker::plotWidget.

Constructor & Destructor Documentation

CanvasPicker::CanvasPicker ( Graph * plot )

References d_editing_marker, plotWidget, Graph::plotWidget(), and pointSelected.

Member Function Documentation

void CanvasPicker::disableEditing ( )

Disable editing of d_editing_marker on a TAB-key event.

Called by Graph::focusNextPrevChild ()

References d_editing_marker, and ArrowMarker::setEditable().

Referenced by Graph::focusNextPrevChild().

void CanvasPicker::drawLineMarker	(	const QPoint &	point,
		bool	endArrow
	)

private

References ArrowMarker::drawEndArrow(), ArrowMarker::drawStartArrow(), plot(), plotWidget, Graph::plotWidget(), ArrowMarker::setColor(), ArrowMarker::setEndPoint(), ArrowMarker::setStartPoint(), ArrowMarker::setStyle(), ArrowMarker::setWidth(), and startLinePoint.

Referenced by eventFilter().

void CanvasPicker::drawTextMarker ( const QPoint & point )

private

References Graph::drawText(), drawTextOff(), Graph::insertTextMarker(), plot(), plotWidget, Legend::setBackgroundColor(), Legend::setFont(), Legend::setFrameStyle(), Legend::setOrigin(), Legend::setText(), and Legend::setTextColor().

Referenced by eventFilter().

void CanvasPicker::drawTextOff ( )

signal

Referenced by drawTextMarker().

bool CanvasPicker::eventFilter	(	QObject *	object,
		QEvent *	e
	)

virtual

References Graph::addArrow(), Graph::arrowDefaultColor(), Graph::arrowDefaultWidth(), Graph::arrowHeadDefaultAngle(), Graph::arrowHeadDefaultFill(), Graph::arrowHeadDefaultLength(), Graph::arrowLineDefaultStyle(), Plot::closestCurve(), d_editing_marker, Graph::deselectMarker(), Graph::drawArrow(), ArrowMarker::drawEndArrow(), Graph::drawLine(), Graph::drawLineActive(), drawLineMarker(), ArrowMarker::drawStartArrow(), Graph::drawTextActive(), drawTextMarker(), ArrowMarker::eventFilter(), ArrowMarker::fillArrowHead(), Graph::imageMarkerKeys(), Graph::lineMarkerKeys(), plot(), plotWidget, Graph::plotWidget(), Graph::selectedMarkerKey(), selectMarker(), selectPlot(), ArrowMarker::setColor(), ArrowMarker::setEditable(), ArrowMarker::setEndPoint(), ArrowMarker::setHeadAngle(), ArrowMarker::setHeadLength(), ArrowMarker::setStartPoint(), ArrowMarker::setStyle(), ArrowMarker::setWidth(), showMarkerPopupMenu(), showPlotDialog(), startLinePoint, Graph::textMarkerKeys(), viewImageDialog(), viewLineDialog(), viewTextDialog(), and Graph::zoomOn().

void CanvasPicker::modified ( )

signal

Graph* CanvasPicker::plot ( )

inlineprivate

Return my parent as a Graph.

Note that contrary to the method name, this does NOT return the Plot I operate on.

Referenced by drawLineMarker(), drawTextMarker(), eventFilter(), and selectMarker().

bool CanvasPicker::selectMarker ( const QMouseEvent * e )

private

Selects and highlights the marker at the given position.

Returns:: whether a marker was found at pointSelected

References d_editing_marker, Graph::deselectMarker(), ArrowMarker::dist(), ArrowMarker::headAngle(), ArrowMarker::headLength(), Graph::imageMarkerKeys(), Graph::lineMarkerKeys(), M_PI, Plot::marker(), plot(), plotWidget, Legend::rect(), ImageMarker::rect(), ArrowMarker::setEditable(), Graph::setSelectedMarker(), and ArrowMarker::width().

Referenced by eventFilter().

void CanvasPicker::selectPeak ( const QPoint & p )

void CanvasPicker::selectPlot ( )

signal

Referenced by eventFilter().

void CanvasPicker::selectPoints ( int n )

void CanvasPicker::showMarkerPopupMenu ( )

signal

Referenced by eventFilter().

void CanvasPicker::showPlotDialog ( int )

signal

Referenced by eventFilter().

void CanvasPicker::viewImageDialog ( )

signal

Referenced by eventFilter().

void CanvasPicker::viewLineDialog ( )

signal

Referenced by eventFilter().

void CanvasPicker::viewTextDialog ( )

signal

Referenced by eventFilter().

Member Data Documentation

ArrowMarker* CanvasPicker::d_editing_marker

private

The marker that is currently being edited, or NULL. Editing does explicitly not inlude moving and resizing, which are being handled by SelectionMoveResizer (see Graph::d_markers_selector). Currently, only ArrowMarker provides any other form of editing, but this really should be generalized. See ImageMarker for details.

Referenced by CanvasPicker(), disableEditing(), eventFilter(), and selectMarker().

QPoint CanvasPicker::endLinePoint

private

Plot* CanvasPicker::plotWidget

private

The Plot I handle user interaction for.

Note that this has to be owned by my parent Graph.

Referenced by CanvasPicker(), drawLineMarker(), drawTextMarker(), eventFilter(), and selectMarker().

bool CanvasPicker::pointSelected

private

Referenced by CanvasPicker().

QPoint CanvasPicker::startLinePoint