Engauge Digitizer 2
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DigitizeStateContext.h
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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
11#include "PointStyle.h"
12#include <QCursor>
13#include <QGraphicsView>
14#include <QObject>
15#include <QVector>
16
17class CmdAbstractBase;
20class MainWindow;
21class MainWindowModel;
22class QSize;
23class QUndoCommand;
24class Transformation;
25
27class DigitizeStateContext : public QObject
28{
29 Q_OBJECT;
30
31public:
34 QGraphicsView &view,
35 bool isGnuplot);
36 virtual ~DigitizeStateContext ();
37
39 QString activeCurve () const;
40
42 void appendNewCmd(CmdMediator *cmdMediator,
43 QUndoCommand *cmd);
44
46 bool canPaste (const Transformation &transformation,
47 const QSize &viewSize) const;
48
50 void handleContextMenuEventAxis (CmdMediator *cmdMediator,
51 const QString &pointIdentifier);
52
55 const QStringList &pointIdentifiers);
56
58 void handleCurveChange (CmdMediator *cmdMediator);
59
61 void handleKeyPress (CmdMediator *cmdMediator,
62 Qt::Key key,
63 bool atLeastOneSelectedItem);
64
66 void handleMouseMove (CmdMediator *cmdMediator,
67 QPointF pos);
68
70 void handleMousePress (CmdMediator *cmdMediator,
71 QPointF pos);
72
74 void handleMouseRelease (CmdMediator *cmdMediator,
75 QPointF pos);
76
78 bool isGnuplot () const;
79
82
84 const MainWindow &mainWindow () const;
85
88
91 DigitizeState digitizeState);
92
94 void resetOnLoad (CmdMediator *cmdMediator);
95
97 void setCursor (CmdMediator *cmdMediator);
98
100 void setDragMode (QGraphicsView::DragMode dragMode);
101
103 void setImageIsLoaded (CmdMediator *cmdMediator,
104 bool imageIsLoaded);
105
107 QString state() const;
108
111
113 void updateModelDigitizeCurve (CmdMediator *cmdMediator,
114 const DocumentModelDigitizeCurve &modelDigitizeCurve);
115
117 void updateModelSegments(const DocumentModelSegments &modelSegments);
118
120 QGraphicsView &view();
121
122private:
124
125 void completeRequestedStateTransitionIfExists (CmdMediator *cmdMediator);
126
127 MainWindow &m_mainWindow;
128 QGraphicsView &m_view;
129 bool m_imageIsLoaded; // Cursor and dragging can be affected by whether or not image is loaded
130
131 QVector<DigitizeStateAbstractBase*> m_states;
132 DigitizeState m_currentState;
133 DigitizeState m_requestedState; // Same as m_currentState until requestDelayedStateTransition is called
134
135 bool m_isGnuplot;
136};
137
138#endif // DIGITIZE_STATE_CONTEXT_H
DigitizeState
Set of possible states of Digitize toolbar.
Command queue stack.
Definition CmdMediator.h:24
Container for all DigitizeStateAbstractBase subclasses. This functions as the context class in a stan...
QString state() const
State name for debugging.
bool isGnuplot() const
Get method for gnuplot flag.
void resetOnLoad(CmdMediator *cmdMediator)
Resetting makes re-initializes for documents after the first.
void handleMouseRelease(CmdMediator *cmdMediator, QPointF pos)
See DigitizeStateAbstractBase::handleMouseRelease.
bool canPaste(const Transformation &transformation, const QSize &viewSize) const
Return true if there is good data in the clipboard for pasting, and that operation is compatible with...
void handleMouseMove(CmdMediator *cmdMediator, QPointF pos)
See DigitizeStateAbstractBase::handleMouseMove.
void requestImmediateStateTransition(CmdMediator *cmdMediator, DigitizeState digitizeState)
Perform immediate state transition. Called from outside state machine.
void updateModelDigitizeCurve(CmdMediator *cmdMediator, const DocumentModelDigitizeCurve &modelDigitizeCurve)
Update the digitize curve settings.
void handleContextMenuEventGraph(CmdMediator *cmdMediator, const QStringList &pointIdentifiers)
See DigitizeStateAbstractBase::handleContextMenuEventGraph.
void setDragMode(QGraphicsView::DragMode dragMode)
Set QGraphicsView drag mode (in m_view). Called from DigitizeStateAbstractBase subclasses.
void handleMousePress(CmdMediator *cmdMediator, QPointF pos)
See DigitizeStateAbstractBase::handleMousePress.
void appendNewCmd(CmdMediator *cmdMediator, QUndoCommand *cmd)
Append just-created QUndoCommand to command stack. This is called from DigitizeStateAbstractBase subc...
void setCursor(CmdMediator *cmdMediator)
Set cursor after asking state for the new cursor shape.
void setImageIsLoaded(CmdMediator *cmdMediator, bool imageIsLoaded)
Set the image so QGraphicsView cursor and drag mode are accessible.
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.
void updateModelSegments(const DocumentModelSegments &modelSegments)
Update the segments given the new settings.
void requestDelayedStateTransition(DigitizeState digitizeState)
Initiate state transition to be performed later, when DigitizeState is off the stack.
void updateAfterPointAddition()
Update the graphics attributes.
QGraphicsView & view()
QGraphicsView for use by DigitizeStateAbstractBase subclasses.
void handleCurveChange(CmdMediator *cmdMediator)
See DigitizeStateAbstractBase::handleCurveChange.
MainWindow & mainWindow()
Reference to the MainWindow, without const.
void handleContextMenuEventAxis(CmdMediator *cmdMediator, const QString &pointIdentifier)
See DigitizeStateAbstractBase::handleContextMenuEventAxis.
Model for DlgSettingsDigitizeCurve and CmdSettingsDigitizeCurve.
Model for DlgSettingsSegments and CmdSettingsSegments.
Model for DlgSettingsMainWindow.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition MainWindow.h:92
Affine transformation between screen and graph coordinates, based on digitized axis points.