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CmdEditPointGraph.cpp
1 /******************************************************************************************************
2  * (C) 2016 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 "CmdEditPointGraph.h"
8 #include "Document.h"
9 #include "DocumentSerialize.h"
10 #include "EngaugeAssert.h"
11 #include "Logger.h"
12 #include "MainWindow.h"
13 #include <QTextStream>
14 #include "QtToString.h"
15 #include <QXmlStreamReader>
16 #include "Xml.h"
17 
18 const QString CMD_DESCRIPTION ("Edit curve points");
19 
21  Document &document,
22  const QStringList &pointIdentifiers,
23  bool isX,
24  bool isY,
25  double x,
26  double y) :
27  CmdPointChangeBase (mainWindow,
28  document,
29  CMD_DESCRIPTION),
30  m_pointIdentifiers (pointIdentifiers),
31  m_isX (isX),
32  m_isY (isY),
33  m_x (x),
34  m_y (y)
35 {
36  LOG4CPP_INFO_S ((*mainCat)) << "CmdEditPointGraph::CmdEditPointGraph point="
37  << pointIdentifiers.join(" ").toLatin1 ().data ()
38  << " x=" << (m_isX ? QString::number (x).toLatin1().data() : "")
39  << " y=" << (m_isY ? QString::number (y).toLatin1().data() : "");
40 }
41 
43  Document &document,
44  const QString &cmdDescription,
45  QXmlStreamReader &reader) :
46  CmdPointChangeBase (mainWindow,
47  document,
48  cmdDescription)
49 {
50  LOG4CPP_INFO_S ((*mainCat)) << "CmdEditPointGraph::CmdEditPointGraph";
51 
52  QXmlStreamAttributes attributes = reader.attributes();
53 
54  if (!attributes.hasAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_X) ||
55  !attributes.hasAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_Y) ||
56  !attributes.hasAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_X) ||
57  !attributes.hasAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_Y) ) {
58  xmlExitWithError (reader,
59  QString ("%1 %2, %3, %4 %5 %6")
60  .arg (QObject::tr ("Missing attribute(s)"))
61  .arg (DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_X)
62  .arg (DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_Y)
63  .arg (DOCUMENT_SERIALIZE_EDIT_GRAPH_X)
64  .arg (QObject::tr ("and/or"))
65  .arg (DOCUMENT_SERIALIZE_EDIT_GRAPH_Y));
66  } else {
67 
68  // Boolean attributes
69  QString isX = attributes.value(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_X).toString();
70  QString isY = attributes.value(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_Y).toString();
71 
72  m_isX = (isX == DOCUMENT_SERIALIZE_BOOL_TRUE);
73  m_isY = (isY == DOCUMENT_SERIALIZE_BOOL_TRUE);
74  m_x = attributes.value(DOCUMENT_SERIALIZE_EDIT_GRAPH_X).toDouble();
75  m_y = attributes.value(DOCUMENT_SERIALIZE_EDIT_GRAPH_Y).toDouble();
76 
77  bool success = true;
78  while (loadNextFromReader (reader)) {
79 
80  if (reader.atEnd() || reader.hasError ()) {
81  success = false;
82  break;
83  }
84 
85  if ((reader.tokenType() == QXmlStreamReader::EndElement) &
86  (reader.name() == DOCUMENT_SERIALIZE_CMD)) {
87  break;
88  }
89 
90  // Not done yet
91  if ((reader.tokenType() == QXmlStreamReader::StartElement) &&
92  (reader.name() == DOCUMENT_SERIALIZE_POINT)) {
93 
94  // This is an entry that we need to add
95  QXmlStreamAttributes attributes = reader.attributes ();
96 
97  if (attributes.hasAttribute(DOCUMENT_SERIALIZE_IDENTIFIER)) {
98 
99  m_pointIdentifiers << attributes.value(DOCUMENT_SERIALIZE_IDENTIFIER).toString();
100  }
101  }
102  }
103 
104  if (!success) {
105  reader.raiseError (QObject::tr ("Cannot read graph points"));
106  }
107  }
108 }
109 
110 CmdEditPointGraph::~CmdEditPointGraph ()
111 {
112 }
113 
115 {
116  LOG4CPP_INFO_S ((*mainCat)) << "CmdEditPointGraph::cmdRedo";
117 
120  document().editPointGraph (m_isX,
121  m_isY,
122  m_x,
123  m_y,
124  m_pointIdentifiers,
125  mainWindow().transformation());
126  document().updatePointOrdinals (mainWindow().transformation());
129 }
130 
132 {
133  LOG4CPP_INFO_S ((*mainCat)) << "CmdEditPointGraph::cmdUndo";
134 
139 }
140 
141 void CmdEditPointGraph::saveXml (QXmlStreamWriter &writer) const
142 {
143  writer.writeStartElement(DOCUMENT_SERIALIZE_CMD);
144  writer.writeAttribute(DOCUMENT_SERIALIZE_CMD_TYPE, DOCUMENT_SERIALIZE_CMD_EDIT_POINT_GRAPH);
145  writer.writeAttribute(DOCUMENT_SERIALIZE_CMD_DESCRIPTION, QUndoCommand::text ());
146  writer.writeAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_X, m_isX ?
147  DOCUMENT_SERIALIZE_BOOL_TRUE :
148  DOCUMENT_SERIALIZE_BOOL_FALSE);
149  writer.writeAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_Y, m_isY ?
150  DOCUMENT_SERIALIZE_BOOL_TRUE :
151  DOCUMENT_SERIALIZE_BOOL_FALSE);
152  writer.writeAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_X, QString::number (m_x));
153  writer.writeAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_Y, QString::number (m_y));
154 
155  for (int index = 0; index < m_pointIdentifiers.count(); index++) {
156 
157  writer.writeStartElement (DOCUMENT_SERIALIZE_POINT);
158  writer.writeAttribute(DOCUMENT_SERIALIZE_IDENTIFIER, m_pointIdentifiers.at (index));
159  writer.writeEndElement();
160  }
161  writer.writeEndElement();
162 }
virtual void saveXml(QXmlStreamWriter &writer) const
Save commands as xml for later uploading.
virtual void cmdUndo()
Undo method that is called when QUndoStack is moved one command backward.
virtual void cmdRedo()
Redo method that is called when QUndoStack is moved one command forward.
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...
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
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
void editPointGraph(bool isX, bool isY, double x, double y, const QStringList &identifiers, const Transformation &transformation)
Edit the graph coordinates of one or more graph points.
Definition: Document.cpp:375
CmdEditPointGraph(MainWindow &mainWindow, Document &document, const QStringList &pointIdentifiers, bool isX, bool isY, double x, double y)
Constructor for normal creation.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition: MainWindow.h:86
void updatePointOrdinals(const Transformation &transformation)
Update point ordinals after point addition/removal or dragging.
Definition: Document.cpp:1064
void saveDocumentState(const Document &document)
Save the document state for restoration by restoreDocumentState.