Engauge Digitizer 2
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DigitizeStateSegment.cpp
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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#include "CmdAddPointsGraph.h"
10#include "EngaugeAssert.h"
11#include "GraphicsScene.h"
12#include "Logger.h"
13#include "MainWindow.h"
14#include "OrdinalGenerator.h"
15#include <QGraphicsPixmapItem>
16#include <QGraphicsScene>
17#include <QImage>
18#include <QSize>
19#include "Segment.h"
20#include "SegmentFactory.h"
21#include "Transformation.h"
22
27
31
36
38 DigitizeState /* previousState */)
39{
40 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::begin";
41
42 m_cmdMediator = cmdMediator; // Save for slotMouseClickOnSegment
43
44 setCursor(cmdMediator);
45 context().setDragMode(QGraphicsView::NoDrag);
48
49 handleCurveChange(cmdMediator);
50}
51
53 const QSize &viewSize) const
54{
55 return canPasteProtected (transformation,
56 viewSize);
57}
58
59QCursor DigitizeStateSegment::cursor(CmdMediator * /* cmdMediator */) const
60{
61 LOG4CPP_DEBUG_S ((*mainCat)) << "DigitizeStateSegment::cursor";
62
63 return QCursor (Qt::ArrowCursor);
64}
65
67{
68 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::end";
69
71 SegmentFactory segmentFactory (dynamic_cast<QGraphicsScene &> (scene),
72 context().isGnuplot());
73
74 segmentFactory.clearSegments(m_segments);
75}
76
78{
79 return false;
80}
81
83 const QString &pointIdentifier)
84{
85 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::handleContextMenuEventAxis "
86 << " point=" << pointIdentifier.toLatin1 ().data ();
87}
88
90 const QStringList &pointIdentifiers)
91{
92 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment ::handleContextMenuEventGraph "
93 << "points=" << pointIdentifiers.join(",").toLatin1 ().data ();
94}
95
97{
98 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::handleCurveChange";
99
100 QImage img = context().mainWindow().imageFiltered();
101
102 GraphicsScene &scene = context().mainWindow().scene();
103 SegmentFactory segmentFactory (dynamic_cast<QGraphicsScene &> (scene),
104 context().isGnuplot());
105
106 segmentFactory.clearSegments (m_segments);
107
108 // Create new segments
109 segmentFactory.makeSegments (img,
110 cmdMediator->document().modelSegments(),
111 m_segments);
112
113 // Connect signals of the new segments
114 QList<Segment*>::iterator itr;
115 for (itr = m_segments.begin(); itr != m_segments.end(); itr++) {
116 Segment *segment = *itr;
117
118 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::handleCurveChange"
119 << " lines=" << segment->lineCount();
120
121 connect (segment, SIGNAL (signalMouseClickOnSegment (QPointF)), this, SLOT (slotMouseClickOnSegment (QPointF)));
122 }
123}
124
126 Qt::Key key,
127 bool atLeastOneSelectedItem)
128{
129 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::handleKeyPress"
130 << " key=" << QKeySequence (key).toString ().toLatin1 ().data ();
131
132 handleKeyPressArrow (cmdMediator,
133 key,
134 atLeastOneSelectedItem);
135}
136
138 QPointF /* posScreen */)
139{
140// LOG4CPP_DEBUG_S ((*mainCat)) << "DigitizeStateSegment::handleMouseMove";
141}
142
144 QPointF /* posScreen */)
145{
146 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::handleMousePress";
147}
148
150 QPointF /* posScreen */)
151{
152 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::handleMouseRelease";
153}
154
155Segment *DigitizeStateSegment::segmentFromSegmentStart (const QPointF &posSegmentStart) const
156{
157 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::segmentFromSegmentStart"
158 << " segments=" << m_segments.count();
159
160 QList<Segment*>::const_iterator itr;
161 for (itr = m_segments.begin(); itr != m_segments.end(); itr++) {
162 Segment *segment = *itr;
163
164 if (segment->firstPoint() == posSegmentStart) {
165
166 return segment;
167 }
168 }
169
170 LOG4CPP_ERROR_S ((*mainCat)) << "DigitizeStateSegment::segmentFromSegmentStart";
171 ENGAUGE_ASSERT (false);
172 return nullptr;
173}
174
176{
177 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::slotMouseClickOnSegment";
178
179 Segment *segment = segmentFromSegmentStart (posSegmentStart);
180
181 // Create single-entry list that is expected by SegmentFactory
182 QList<Segment*> segments;
183 segments.push_back (segment);
184
185 // Generate point coordinates. Nothing is created in the GraphicsScene at this point
186 GraphicsScene &scene = context().mainWindow().scene();
187 SegmentFactory segmentFactory (dynamic_cast<QGraphicsScene &> (scene),
188 context().isGnuplot());
189
190 QList<QPoint> points = segmentFactory.fillPoints (m_cmdMediator->document().modelSegments(),
191 segments);
192
193 // Create one ordinal for each point
194 OrdinalGenerator ordinalGenerator;
195 Document &document = m_cmdMediator->document ();
196 const Transformation &transformation = context ().mainWindow ().transformation();
197 QList<double> ordinals;
198 QList<QPoint>::iterator itr;
199 for (itr = points.begin(); itr != points.end(); itr++) {
200
201 QPoint point = *itr;
202 ordinals << ordinalGenerator.generateCurvePointOrdinal(document,
203 transformation,
204 point,
205 activeCurve ());
206 }
207
208 // Create command to add points
209 QUndoCommand *cmd = new CmdAddPointsGraph (context ().mainWindow(),
210 document,
211 context ().mainWindow().selectedGraphCurve(),
212 points,
213 ordinals);
214 context().appendNewCmd(m_cmdMediator,
215 cmd);
216}
217
219{
220 return "DigitizeStateSegment";
221}
222
224{
225 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::updateAfterPointAddition";
226}
227
229 const DocumentModelDigitizeCurve & /*modelDigitizeCurve */)
230{
231 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::updateModelDigitizeCurve";
232}
233
235{
236 LOG4CPP_INFO_S ((*mainCat)) << "DigitizeStateSegment::updateModelSegments";
237
238 QList<Segment*>::const_iterator itr;
239 for (itr = m_segments.begin(); itr != m_segments.end(); itr++) {
240 Segment *segment = *itr;
241
242 segment->updateModelSegment (modelSegments);
243 }
244}
DigitizeState
Set of possible states of Digitize toolbar.
#define ENGAUGE_ASSERT(cond)
Drop in replacement for Q_ASSERT.
log4cpp::Category * mainCat
Definition Logger.cpp:14
Command for adding one or more graph points. This is for Segment Fill mode.
Command queue stack.
Definition CmdMediator.h:24
Document & document()
Provide the Document to commands, primarily for undo/redo processing.
virtual void handleKeyPressArrow(CmdMediator *cmdMediator, Qt::Key key, bool atLeastOneSelectedItem)
If the key is an arrow (left, right, up, down) then move currently selected items.
DigitizeStateAbstractBase(DigitizeStateContext &context)
Single constructor.
bool canPasteProtected(const Transformation &transformation, const QSize &viewSize) const
Protected version of canPaste method. Some, but not all, leaf classes use this method.
DigitizeStateContext & context()
Reference to the DigitizeStateContext that contains all the DigitizeStateAbstractBase subclasses,...
void setCursor(CmdMediator *cmdMediator)
Update the cursor according to the current state.
Container for all DigitizeStateAbstractBase subclasses. This functions as the context class in a stan...
void setDragMode(QGraphicsView::DragMode dragMode)
Set QGraphicsView drag mode (in m_view). Called from DigitizeStateAbstractBase subclasses.
void appendNewCmd(CmdMediator *cmdMediator, QUndoCommand *cmd)
Append just-created QUndoCommand to command stack. This is called from DigitizeStateAbstractBase subc...
MainWindow & mainWindow()
Reference to the MainWindow, without const.
virtual bool guidelinesAreSelectable() const
Enable/disable guidelines according to state.
virtual QString state() const
State name for debugging.
virtual void handleMousePress(CmdMediator *cmdMediator, QPointF posScreen)
Handle a mouse press that was intercepted earlier.
virtual void handleContextMenuEventAxis(CmdMediator *cmdMediator, const QString &pointIdentifier)
Handle a right click, on an axis point, that was intercepted earlier.
virtual void begin(CmdMediator *cmdMediator, DigitizeState previousState)
Method that is called at the exact moment a state is entered.
virtual QString activeCurve() const
Name of the active Curve. This can include AXIS_CURVE_NAME.
virtual void handleKeyPress(CmdMediator *cmdMediator, Qt::Key key, bool atLeastOneSelectedItem)
Handle a key press that was intercepted earlier.
void slotMouseClickOnSegment(QPointF)
Receive signal from Segment that has been clicked on. The CmdMediator from the begin method will be u...
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 QCursor cursor(CmdMediator *cmdMediator) const
Returns the state-specific cursor shape.
virtual void updateModelDigitizeCurve(CmdMediator *cmdMediator, const DocumentModelDigitizeCurve &modelDigitizeCurve)
Update the digitize curve settings.
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...
DigitizeStateSegment(DigitizeStateContext &context)
Single constructor.
virtual void end()
Method that is called at the exact moment a state is exited. Typically called just before begin for t...
virtual void updateAfterPointAddition()
Update graphics attributes after possible new points. This is useful for highlight opacity.
virtual void updateModelSegments(const DocumentModelSegments &modelSegments)
Update the segments given the new settings.
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 handleMouseRelease(CmdMediator *cmdMediator, QPointF posScreen)
Handle a mouse release that was intercepted earlier.
Model for DlgSettingsDigitizeCurve and CmdSettingsDigitizeCurve.
Model for DlgSettingsSegments and CmdSettingsSegments.
Storage of one imported image and the data attached to that image.
Definition Document.h:44
DocumentModelSegments modelSegments() const
Get method for DocumentModelSegments.
Definition Document.cpp:777
Add point and line handling to generic QGraphicsScene.
void updateViewsOfSettings(const QString &activeCurve)
Update curve-specific view of settings. Private version gets active curve name from DigitizeStateCont...
void handleGuidelinesActiveChange(bool active)
Handle Guidelines active status toggle.
QImage imageFiltered() const
Background image that has been filtered for the current curve. This asserts if a curve-specific image...
QString selectedGraphCurve() const
Curve name that is currently selected in m_cmbCurve.
GraphicsScene & scene()
Scene container for the QImage and QGraphicsItems.
Transformation transformation() const
Return read-only copy of transformation.
Utility class for generating ordinal numbers.
double generateCurvePointOrdinal(const Document &document, const Transformation &transformation, const QPointF &posScreen, const QString &curveName)
Select ordinal so new point curve passes smoothly through existing points.
Factory class for Segment objects.
QList< QPoint > fillPoints(const DocumentModelSegments &modelSegments, QList< Segment * > segments)
Return segment fill points for all segments, for previewing.
void clearSegments(QList< Segment * > &segments)
Remove the segments created by makeSegments.
void makeSegments(const QImage &imageFiltered, const DocumentModelSegments &modelSegments, QList< Segment * > &segments, bool useDlg=true)
Main entry point for creating all Segments for the filtered image.
Selectable piecewise-defined line that follows a filtered line in the image.
Definition Segment.h:22
int lineCount() const
Get method for number of lines.
Definition Segment.cpp:381
void updateModelSegment(const DocumentModelSegments &modelSegments)
Update this segment given the new settings.
Definition Segment.cpp:551
QPointF firstPoint() const
Coordinates of first point in Segment.
Definition Segment.cpp:282
Affine transformation between screen and graph coordinates, based on digitized axis points.
#define LOG4CPP_INFO_S(logger)
Definition convenience.h:18
#define LOG4CPP_DEBUG_S(logger)
Definition convenience.h:20
#define LOG4CPP_ERROR_S(logger)
Definition convenience.h:12