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/*
* kis_tool_curve.h -- part of Krita
*
* Copyright (c) 2006 Emanuele Tamponi <emanuele@valinor.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef KIS_TOOL_CURVE_H_
#define KIS_TOOL_CURVE_H_
#include <qpen.h>
#include <qcursor.h>
#include "kis_selection.h"
#include "kis_tool_paint.h"
#include "kis_canvas_subject.h"
#include "kis_point.h"
#include "kis_curve_framework.h"
class QRect;
class KisPainter;
class KisSelectionOptions;
typedef QPair<KisCurve::iterator,bool> PointPair;
const double MAXDISTANCE = 2.5;
double pointToSegmentDistance(const KisPoint& p, const KisPoint& l0, const KisPoint& l1);
class KisToolCurve : public KisToolPaint {
typedef KisToolPaint super;
Q_OBJECT
public:
KisToolCurve(const QString& UIName);
virtual ~KisToolCurve();
virtual void update (KisCanvasSubject *subject);
virtual QWidget* createOptionWidget(QWidget* parent);
virtual void buttonPress(KisButtonPressEvent *event);
virtual void move(KisMoveEvent *event);
virtual void buttonRelease(KisButtonReleaseEvent *event);
virtual void doubleClick(KisDoubleClickEvent *event);
virtual void keyPress(QKeyEvent *event);
virtual void keyRelease(QKeyEvent *event);
public slots:
virtual void deactivate();
protected:
virtual void paint(KisCanvasPainter&);
virtual void paint(KisCanvasPainter&, const QRect&);
/* ********************** *
* KisToolCurve interface *
* ********************** */
/*
* This keep in sync the options of the tool with the options of the curve
*/
virtual int updateOptions(int);
virtual PointPair pointUnderMouse(const QPoint& pos);
virtual KisCurve::iterator handleUnderMouse(const QPoint& pos);
/*
* Select the needed points; called after pointUnderMouse
*/
virtual KisCurve::iterator selectByMouse(KisCurve::iterator it);
/*
* draw() initializes the KisCanvasPainter and then loop on the points of the curve for drawing them.
*/
virtual void draw(bool = true, bool = false);
virtual void draw(KisCurve::iterator inf, bool = false, bool = true);
/*
* Used by draw() to draw the current point of the curve. Can draw more than one point and then returns the last one
*/
virtual KisCurve::iterator drawPoint(KisCanvasPainter& gc, KisCurve::iterator point);
/*
* Used by draw(), if a point is a pivot, this draw the handle around it (if m_drawPivots is set to true)
*/
virtual void drawPivotHandle(KisCanvasPainter& gc, KisCurve::iterator point);
/*
* Methods for commiting the curve
*/
/*
* Called by selectCurve(), this convert m_curve to a vector of KisPoint in order to be used by paintPolygon()
*/
virtual QValueVector<KisPoint> convertCurve();
/*
* Called by paintCurve(), it behaves essentially like drawPoint(), but this uses a KisPainter
*/
virtual KisCurve::iterator paintPoint(KisPainter&, KisCurve::iterator);
/*
* Finish the curve: if the tool is a TOOL_SHAPE or TOOL_FREEHAND, calls paintCurve(), if it's a TOOL_SELECT, then selectCurve()
*/
virtual void commitCurve();
/*
* Used by commitCurve() if the tool is a painting tool
*/
virtual void paintCurve();
/*
* Used by commitCurve() if the tool is a selection tool
*/
virtual void selectCurve();
/*
* Return the rect around a given point, assuming that that point is an unselected pivot
*/
QRect pivotRect (const QPoint&);
/*
* Same as above for selected pivots
*/
QRect selectedPivotRect (const QPoint&);
protected:
KisImageSP m_currentImage;
KisCurve *m_curve;
KisCurve::iterator m_current;
KisCurve::iterator m_previous;
KisPoint m_currentPoint;
bool m_dragging;
bool m_drawPivots;
QPen m_drawingPen;
QPen m_pivotPen;
QPen m_selectedPivotPen;
int m_pivotRounding;
int m_selectedPivotRounding;
int m_actionOptions;
bool m_supportMinimalDraw;
bool m_draggingCursor;
QString m_transactionMessage;
QString m_cursor;
private:
QString m_UIName;
/* ********************************** *
* Selection Tools specific functions *
* ********************************** */
public:
/*
* This initializes our Option Widget (called by createOptionWidget())
*/
virtual QWidget* createSelectionOptionWidget(QWidget* parent);
/*
* This return our internal KisSelectionOptions if toolType() returns TOOL_SELECT
*/
virtual QWidget* optionWidget();
public slots:
/*
* Slot for createSelectionOptionWidget()
*/
virtual void slotSetAction(int);
private:
/*
* Members used by slotSetAction() and selectCurve()
*/
KisSelectionOptions* m_optWidget;
enumSelectionMode m_selectAction;
};
#endif //__KIS_TOOL_CURVE_H_
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