Engauge Digitizer  2
DigitizeStateContext.h
1 /******************************************************************************************************
2  * (C) 2014 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_CONTEXT_H
8 #define DIGITIZE_STATE_CONTEXT_H
9 
10 #include "DigitizeStateAbstractBase.h"
11 #include "PointStyle.h"
12 #include <QCursor>
13 #include <QGraphicsView>
14 #include <QObject>
15 #include <QVector>
16 
17 class CmdAbstractBase;
20 class MainWindow;
21 class MainWindowModel;
22 class QUndoCommand;
23 
25 class DigitizeStateContext : public QObject
26 {
27  Q_OBJECT;
28 
29 public:
32  QGraphicsView &view,
33  bool isGnuplot);
34  virtual ~DigitizeStateContext ();
35 
37  QString activeCurve () const;
38 
40  void appendNewCmd(CmdMediator *cmdMediator,
41  QUndoCommand *cmd);
42 
44  void handleContextMenuEventAxis (CmdMediator *cmdMediator,
45  const QString &pointIdentifier);
46 
48  void handleContextMenuEventGraph (CmdMediator *cmdMediator,
49  const QStringList &pointIdentifiers);
50 
52  void handleCurveChange (CmdMediator *cmdMediator);
53 
55  void handleKeyPress (CmdMediator *cmdMediator,
56  Qt::Key key,
57  bool atLeastOneSelectedItem);
58 
60  void handleMouseMove (CmdMediator *cmdMediator,
61  QPointF pos);
62 
64  void handleMousePress (CmdMediator *cmdMediator,
65  QPointF pos);
66 
68  void handleMouseRelease (CmdMediator *cmdMediator,
69  QPointF pos);
70 
72  bool isGnuplot () const;
73 
76 
78  const MainWindow &mainWindow () const;
79 
81  void requestDelayedStateTransition (DigitizeState digitizeState);
82 
85  DigitizeState digitizeState);
86 
88  void resetOnLoad (CmdMediator *cmdMediator);
89 
91  void setCursor (CmdMediator *cmdMediator);
92 
94  void setDragMode (QGraphicsView::DragMode dragMode);
95 
97  void setImageIsLoaded (CmdMediator *cmdMediator,
98  bool imageIsLoaded);
99 
101  QString state() const;
102 
104  void updateAfterPointAddition ();
105 
107  void updateModelDigitizeCurve (CmdMediator *cmdMediator,
108  const DocumentModelDigitizeCurve &modelDigitizeCurve);
109 
111  void updateModelSegments(const DocumentModelSegments &modelSegments);
112 
114  QGraphicsView &view();
115 
116 private:
118 
119  void completeRequestedStateTransitionIfExists (CmdMediator *cmdMediator);
120 
121  MainWindow &m_mainWindow;
122  QGraphicsView &m_view;
123  bool m_imageIsLoaded; // Cursor and dragging can be affected by whether or not image is loaded
124 
125  QVector<DigitizeStateAbstractBase*> m_states;
126  DigitizeState m_currentState;
127  DigitizeState m_requestedState; // Same as m_currentState until requestDelayedStateTransition is called
128 
129  bool m_isGnuplot;
130 };
131 
132 #endif // DIGITIZE_STATE_CONTEXT_H
void requestDelayedStateTransition(DigitizeState digitizeState)
Initiate state transition to be performed later, when DigitizeState is off the stack.
void updateAfterPointAddition()
Update the graphics attributes.
void resetOnLoad(CmdMediator *cmdMediator)
Resetting makes re-initializes for documents after the first.
void setDragMode(QGraphicsView::DragMode dragMode)
Set QGraphicsView drag mode (in m_view). Called from DigitizeStateAbstractBase subclasses.
void updateModelDigitizeCurve(CmdMediator *cmdMediator, const DocumentModelDigitizeCurve &modelDigitizeCurve)
Update the digitize curve settings.
void handleContextMenuEventAxis(CmdMediator *cmdMediator, const QString &pointIdentifier)
See DigitizeStateAbstractBase::handleContextMenuEventAxis.
void setCursor(CmdMediator *cmdMediator)
Set cursor after asking state for the new cursor shape.
void handleCurveChange(CmdMediator *cmdMediator)
See DigitizeStateAbstractBase::handleCurveChange.
void handleContextMenuEventGraph(CmdMediator *cmdMediator, const QStringList &pointIdentifiers)
See DigitizeStateAbstractBase::handleContextMenuEventGraph.
QString state() const
State name for debugging.
bool isGnuplot() const
Get method for gnuplot flag.
QString activeCurve() const
Curve name for active Curve. This can include AXIS_CURVE_NAME, and empty string.
void handleKeyPress(CmdMediator *cmdMediator, Qt::Key key, bool atLeastOneSelectedItem)
See DigitizeStateAbstractBase::handleKeyPress.
MainWindow & mainWindow()
Reference to the MainWindow, without const.
void setImageIsLoaded(CmdMediator *cmdMediator, bool imageIsLoaded)
Set the image so QGraphicsView cursor and drag mode are accessible.
Model for DlgSettingsDigitizeCurve and CmdSettingsDigitizeCurve.
Container for all DigitizeStateAbstractBase subclasses. This functions as the context class in a stan...
Model for DlgSettingsMainWindow.
void appendNewCmd(CmdMediator *cmdMediator, QUndoCommand *cmd)
Append just-created QUndoCommand to command stack. This is called from DigitizeStateAbstractBase subc...
void updateModelSegments(const DocumentModelSegments &modelSegments)
Update the segments given the new settings.
void handleMouseMove(CmdMediator *cmdMediator, QPointF pos)
See DigitizeStateAbstractBase::handleMouseMove.
void handleMouseRelease(CmdMediator *cmdMediator, QPointF pos)
See DigitizeStateAbstractBase::handleMouseRelease.
Command queue stack.
Definition: CmdMediator.h:23
Model for DlgSettingsSegments and CmdSettingsSegments.
QGraphicsView & view()
QGraphicsView for use by DigitizeStateAbstractBase subclasses.
void handleMousePress(CmdMediator *cmdMediator, QPointF pos)
See DigitizeStateAbstractBase::handleMousePress.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition: MainWindow.h:83
void requestImmediateStateTransition(CmdMediator *cmdMediator, DigitizeState digitizeState)
Perform immediate state transition. Called from outside state machine.