Engauge Digitizer  2
CmdAddPointsGraph.cpp
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"
8 #include "Document.h"
9 #include "DocumentSerialize.h"
10 #include "EngaugeAssert.h"
11 #include "Logger.h"
12 #include "MainWindow.h"
13 #include <qdebug.h>
14 #include "QtToString.h"
15 #include <QXmlStreamReader>
16 #include <QXmlStreamWriter>
17 #include "Xml.h"
18 
19 const QString CMD_DESCRIPTION ("Add graph points");
20 
22  Document &document,
23  const QString &curveName,
24  const QList<QPoint> &points,
25  const QList<double> &ordinals) :
26  CmdPointChangeBase (mainWindow,
27  document,
28  CMD_DESCRIPTION),
29  m_curveName (curveName),
30  m_points (points),
31  m_ordinals (ordinals)
32 {
33  LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::CmdAddPointsGraph";
34 }
35 
37  Document &document,
38  const QString &cmdDescription,
39  QXmlStreamReader &reader) :
40  CmdPointChangeBase (mainWindow,
41  document,
42  cmdDescription)
43 {
44  LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::CmdAddPointsGraph";
45 
46  QXmlStreamAttributes attributes = reader.attributes();
47 
48  if (!attributes.hasAttribute(DOCUMENT_SERIALIZE_CURVE_NAME)) {
49  xmlExitWithError (reader,
50  QString ("%1 %2")
51  .arg (QObject::tr ("Missing attribute"))
52  .arg (DOCUMENT_SERIALIZE_CURVE_NAME));
53  }
54 
55  m_curveName = attributes.value(DOCUMENT_SERIALIZE_CURVE_NAME).toString();
56 
57  bool success = true;
58  while (loadNextFromReader (reader)) {
59 
60  if (reader.atEnd() || reader.hasError ()) {
61  success = false;
62  break;
63  }
64 
65  if ((reader.tokenType() == QXmlStreamReader::EndElement) &
66  (reader.name() == DOCUMENT_SERIALIZE_CMD)) {
67  break;
68  }
69 
70  // Not done yet
71  if ((reader.tokenType() == QXmlStreamReader::StartElement) &&
72  (reader.name() == DOCUMENT_SERIALIZE_POINT)) {
73 
74  // This is an entry that we need to add
75  QXmlStreamAttributes attributes = reader.attributes ();
76 
77  if (attributes.hasAttribute(DOCUMENT_SERIALIZE_IDENTIFIER) &&
78  attributes.hasAttribute(DOCUMENT_SERIALIZE_ORDINAL) &&
79  attributes.hasAttribute(DOCUMENT_SERIALIZE_SCREEN_X) &&
80  attributes.hasAttribute(DOCUMENT_SERIALIZE_SCREEN_Y)) {
81 
82  m_identifiersAdded << attributes.value(DOCUMENT_SERIALIZE_IDENTIFIER).toString();
83  m_ordinals << attributes.value(DOCUMENT_SERIALIZE_ORDINAL).toDouble();
84 
85  QPoint point (attributes.value(DOCUMENT_SERIALIZE_SCREEN_X).toInt(),
86  attributes.value(DOCUMENT_SERIALIZE_SCREEN_Y).toInt());
87  m_points << point;
88  }
89  }
90  }
91 
92  if (!success) {
93  reader.raiseError (QObject::tr ("Cannot read graph points"));
94  }
95 }
96 
97 CmdAddPointsGraph::~CmdAddPointsGraph ()
98 {
99 }
100 
102 {
103  LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::cmdRedo";
104 
107  for (int index = 0; index < m_points.count(); index++) {
108 
109  QString identifierAdded;
111  m_points.at (index),
112  identifierAdded,
113  m_ordinals.at (index));
114  m_identifiersAdded.push_back (identifierAdded);
115  }
116 
117  document().updatePointOrdinals (mainWindow().transformation());
120 }
121 
123 {
124  LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::cmdUndo";
125 
130 }
131 
132 void CmdAddPointsGraph::saveXml (QXmlStreamWriter &writer) const
133 {
134  writer.writeStartElement(DOCUMENT_SERIALIZE_CMD);
135  writer.writeAttribute(DOCUMENT_SERIALIZE_CMD_TYPE, DOCUMENT_SERIALIZE_CMD_ADD_POINTS_GRAPH);
136  writer.writeAttribute(DOCUMENT_SERIALIZE_CMD_DESCRIPTION, QUndoCommand::text ());
137  writer.writeAttribute(DOCUMENT_SERIALIZE_CURVE_NAME, m_curveName);
138 
139  for (int index = 0; index < m_points.count(); index++) {
140 
141  writer.writeStartElement (DOCUMENT_SERIALIZE_POINT);
142  writer.writeAttribute(DOCUMENT_SERIALIZE_SCREEN_X, QString::number (m_points.at (index).x()));
143  writer.writeAttribute(DOCUMENT_SERIALIZE_SCREEN_Y, QString::number (m_points.at (index).y()));
144 
145  QString identifier;
146  if (index < m_identifiersAdded.count()) {
147  identifier = m_identifiersAdded.at (index);
148  }
149 
150  writer.writeAttribute(DOCUMENT_SERIALIZE_IDENTIFIER, identifier);
151  writer.writeAttribute(DOCUMENT_SERIALIZE_ORDINAL, QString::number (m_ordinals.at (index)));
152  writer.writeEndElement();
153  }
154  writer.writeEndElement();
155 }
void addPointGraphWithGeneratedIdentifier(const QString &curveName, const QPointF &posScreen, QString &generatedIentifier, double ordinal)
Add a single graph point with a generated point identifier.
Definition: Document.cpp:189
void saveOrCheckPostCommandDocumentStateHash(const Document &document)
Save, when called the first time, a hash value representing the state of the Document.
void saveOrCheckPreCommandDocumentStateHash(const Document &document)
Save, when called the first time, a hash value representing the state of the Document.
Base class for CmdBase leaf subclasses that involve point additions, deletions and/or modifications...
CmdAddPointsGraph(MainWindow &mainWindow, Document &document, const QString &curveName, const QList< QPoint > &points, const QList< double > &ordinals)
Constructor for normal creation.
MainWindow & mainWindow()
Return the MainWindow so it can be updated by this command as a last step.
Definition: CmdAbstract.cpp:45
void updateAfterCommand()
See GraphicsScene::updateAfterCommand.
Storage of one imported image and the data attached to that image.
Definition: Document.h:41
virtual void cmdUndo()
Undo method that is called when QUndoStack is moved one command backward.
void restoreDocumentState(Document &document) const
Restore the document previously saved by saveDocumentState.
Document & document()
Return the Document that this command will modify during redo and undo.
Definition: CmdAbstract.cpp:35
virtual void saveXml(QXmlStreamWriter &writer) const
Save commands as xml for later uploading.
virtual void cmdRedo()
Redo method that is called when QUndoStack is moved one command forward.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition: MainWindow.h:82
void updatePointOrdinals(const Transformation &transformation)
Update point ordinals after point addition/removal or dragging.
Definition: Document.cpp:960
void saveDocumentState(const Document &document)
Save the document state for restoration by restoreDocumentState.