Engauge Digitizer  2
DigitizeStateScale.h
1 /******************************************************************************************************
2  * (C) 2017 markummitchell@github.com. This file is part of Engauge Digitizer, which is released *
3  * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
4  * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission. *
5  ******************************************************************************************************/
6 
7 #ifndef DIGITIZE_STATE_SCALE_H
8 #define DIGITIZE_STATE_SCALE_H
9 
10 #include "DigitizeStateAbstractBase.h"
11 #include <QObject>
12 
13 class GraphicsPoint;
14 class QGraphicsLineItem;
15 class QPointF;
16 
23 class DigitizeStateScale : public QObject, public DigitizeStateAbstractBase
24 {
25 public:
28  virtual ~DigitizeStateScale();
29 
30  virtual QString activeCurve () const;
31  virtual void begin(CmdMediator *cmdMediator,
32  DigitizeState previousState);
33  virtual bool canPaste (const Transformation &transformation,
34  const QSize &viewSize) const;
35  virtual QCursor cursor (CmdMediator *cmdMediator) const;
36  virtual void end();
37  virtual void handleContextMenuEventAxis (CmdMediator *cmdMediator,
38  const QString &pointIdentifier);
39  virtual void handleContextMenuEventGraph (CmdMediator *cmdMediator,
40  const QStringList &pointIdentifiers);
41  virtual void handleCurveChange(CmdMediator *cmdMediator);
42  virtual void handleKeyPress (CmdMediator *cmdMediator,
43  Qt::Key key,
44  bool atLeastOneSelectedItem);
45  virtual void handleMouseMove (CmdMediator *cmdMediator,
46  QPointF posScreen);
47  virtual void handleMousePress (CmdMediator *cmdMediator,
48  QPointF posScreen);
49  virtual void handleMouseRelease (CmdMediator *cmdMediator,
50  QPointF posScreen);
51  virtual QString state() const;
52  virtual void updateAfterPointAddition ();
53  virtual void updateModelDigitizeCurve (CmdMediator *cmdMediator,
54  const DocumentModelDigitizeCurve &modelDigitizeCurve);
55  virtual void updateModelSegments(const DocumentModelSegments &modelSegments);
56 
57 private:
59 
60  void removeTemporaryPointsAndLine();
61  void updateLineGeometry ();
62 
63  QString m_pointIdentifier0;
64  QString m_pointIdentifier1;
65  GraphicsPoint *m_temporaryPoint0;
66  GraphicsPoint *m_temporaryPoint1;
67 
68  QGraphicsLineItem *m_line;
69 };
70 
71 #endif // DIGITIZE_STATE_SCALE_H
virtual void handleMousePress(CmdMediator *cmdMediator, QPointF posScreen)
Handle a mouse press that was intercepted earlier.
virtual void handleKeyPress(CmdMediator *cmdMediator, Qt::Key key, bool atLeastOneSelectedItem)
Handle a key press that was intercepted earlier.
Digitizing state for creating the scale bar.
virtual void handleContextMenuEventAxis(CmdMediator *cmdMediator, const QString &pointIdentifier)
Handle a right click, on an axis point, that was intercepted earlier.
virtual void updateModelDigitizeCurve(CmdMediator *cmdMediator, const DocumentModelDigitizeCurve &modelDigitizeCurve)
Update the digitize curve settings.
virtual void handleMouseRelease(CmdMediator *cmdMediator, QPointF posScreen)
Handle a mouse release that was intercepted earlier.
DigitizeStateContext & context()
Reference to the DigitizeStateContext that contains all the DigitizeStateAbstractBase subclasses...
virtual void handleCurveChange(CmdMediator *cmdMediator)
Handle the selection of a new curve. At a minimum, DigitizeStateSegment will generate a new set of Se...
virtual void handleContextMenuEventGraph(CmdMediator *cmdMediator, const QStringList &pointIdentifiers)
Handle a right click, on a graph point, that was intercepted earlier.
virtual bool canPaste(const Transformation &transformation, const QSize &viewSize) const
Return true if there is good data in the clipboard for pasting, and that is compatible with the curre...
virtual QString state() const
State name for debugging.
Model for DlgSettingsDigitizeCurve and CmdSettingsDigitizeCurve.
Affine transformation between screen and graph coordinates, based on digitized axis points...
virtual QString activeCurve() const
Name of the active Curve. This can include AXIS_CURVE_NAME.
Container for all DigitizeStateAbstractBase subclasses. This functions as the context class in a stan...
virtual void updateAfterPointAddition()
Update graphics attributes after possible new points. This is useful for highlight opacity...
virtual QCursor cursor(CmdMediator *cmdMediator) const
Returns the state-specific cursor shape.
Graphics item for drawing a circular or polygonal Point.
Definition: GraphicsPoint.h:43
virtual void begin(CmdMediator *cmdMediator, DigitizeState previousState)
Method that is called at the exact moment a state is entered.
Command queue stack.
Definition: CmdMediator.h:23
Model for DlgSettingsSegments and CmdSettingsSegments.
Base class for all digitizing states. This serves as an interface to DigitizeStateContext.
virtual void handleMouseMove(CmdMediator *cmdMediator, QPointF posScreen)
Handle a mouse move. This is part of an experiment to see if augmenting the cursor in Point Match mod...
virtual void end()
Method that is called at the exact moment a state is exited. Typically called just before begin for t...
virtual void updateModelSegments(const DocumentModelSegments &modelSegments)
Update the segments given the new settings.