Engauge Digitizer 2
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CmdAddPointsGraph.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"
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 <QStringList>
15#include "QtToString.h"
16#include <QXmlStreamReader>
17#include <QXmlStreamWriter>
18#include "Xml.h"
19
20const QString CMD_DESCRIPTION ("Add graph points");
21
24 const QString &curveName,
25 const QList<QPoint> &points,
26 const QList<double> &ordinals) :
30 m_curveName (curveName),
31 m_points (points),
32 m_ordinals (ordinals)
33{
34 LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::CmdAddPointsGraph";
35}
36
39 const QString &cmdDescription,
40 QXmlStreamReader &reader) :
43 cmdDescription)
44{
45 LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::CmdAddPointsGraph";
46
47 QXmlStreamAttributes attributes = reader.attributes();
48
49 if (!attributes.hasAttribute(DOCUMENT_SERIALIZE_CURVE_NAME)) {
50 xmlExitWithError (reader,
51 QString ("%1 %2")
52 .arg (QObject::tr ("Missing attribute"))
54 }
55
56 m_curveName = attributes.value(DOCUMENT_SERIALIZE_CURVE_NAME).toString();
57
58 bool success = true;
59 while (loadNextFromReader (reader)) {
60
61 if (reader.atEnd() || reader.hasError ()) {
62 success = false;
63 break;
64 }
65
66 if ((reader.tokenType() == QXmlStreamReader::EndElement) &
67 (reader.name() == DOCUMENT_SERIALIZE_CMD)) {
68 break;
69 }
70
71 // Not done yet
72 if ((reader.tokenType() == QXmlStreamReader::StartElement) &&
73 (reader.name() == DOCUMENT_SERIALIZE_POINT)) {
74
75 // This is an entry that we need to add
76 QXmlStreamAttributes attributes = reader.attributes ();
77
78 QStringList requiredAttributesLeaf;
79 requiredAttributesLeaf << DOCUMENT_SERIALIZE_IDENTIFIER
83 leafAttributes (attributes,
84 requiredAttributesLeaf,
85 reader);
86
87 m_identifiersAdded << attributes.value(DOCUMENT_SERIALIZE_IDENTIFIER).toString();
88 m_ordinals << attributes.value(DOCUMENT_SERIALIZE_ORDINAL).toDouble();
89
90 QPoint point (attributes.value(DOCUMENT_SERIALIZE_SCREEN_X).toInt(),
91 attributes.value(DOCUMENT_SERIALIZE_SCREEN_Y).toInt());
92 m_points << point;
93 }
94 }
95
96 if (!success) {
97 reader.raiseError (QObject::tr ("Cannot read graph points"));
98 }
99}
100
104
106{
107 LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointsGraph::cmdRedo";
108
109 restoreState ();
112
113 int index;
114 for (index = 0; index < m_points.count(); index++) {
115
116 QString identifierAdded;
118 m_points.at (index),
119 identifierAdded,
120 m_ordinals.at (index));
121 m_identifiersAdded.push_back (identifierAdded);
122 }
123
124 document().updatePointOrdinals (mainWindow().transformation());
126 selectAddedPointsForMoving(m_identifiersAdded);
128}
129
140
141void CmdAddPointsGraph::saveXml (QXmlStreamWriter &writer) const
142{
143 writer.writeStartElement(DOCUMENT_SERIALIZE_CMD);
145 writer.writeAttribute(DOCUMENT_SERIALIZE_CMD_DESCRIPTION, QUndoCommand::text ());
146 writer.writeAttribute(DOCUMENT_SERIALIZE_CURVE_NAME, m_curveName);
147
148 for (int index = 0; index < m_points.count(); index++) {
149
150 writer.writeStartElement (DOCUMENT_SERIALIZE_POINT);
151 writer.writeAttribute(DOCUMENT_SERIALIZE_SCREEN_X, QString::number (m_points.at (index).x()));
152 writer.writeAttribute(DOCUMENT_SERIALIZE_SCREEN_Y, QString::number (m_points.at (index).y()));
153
154 QString identifier;
155 if (index < m_identifiersAdded.count()) {
156 identifier = m_identifiersAdded.at (index);
157 }
158
159 writer.writeAttribute(DOCUMENT_SERIALIZE_IDENTIFIER, identifier);
160 writer.writeAttribute(DOCUMENT_SERIALIZE_ORDINAL, QString::number (m_ordinals.at (index)));
161 writer.writeEndElement();
162 }
163 baseAttributes (writer);
164 writer.writeEndElement();
165}
const QString CMD_DESCRIPTION("Add axis point")
const QString CMD_DESCRIPTION("Add graph points")
const QString DOCUMENT_SERIALIZE_IDENTIFIER
const QString DOCUMENT_SERIALIZE_CURVE_NAME
const QString DOCUMENT_SERIALIZE_CMD_ADD_POINTS_GRAPH
const QString DOCUMENT_SERIALIZE_SCREEN_Y
const QString DOCUMENT_SERIALIZE_POINT
const QString DOCUMENT_SERIALIZE_CMD
const QString DOCUMENT_SERIALIZE_ORDINAL
const QString DOCUMENT_SERIALIZE_SCREEN_X
const QString DOCUMENT_SERIALIZE_CMD_TYPE
const QString DOCUMENT_SERIALIZE_CMD_DESCRIPTION
log4cpp::Category * mainCat
Definition Logger.cpp:14
QXmlStreamReader::TokenType loadNextFromReader(QXmlStreamReader &reader)
Load next token from xml reader.
Definition Xml.cpp:14
void xmlExitWithError(QXmlStreamReader &reader, const QString &message)
Show specified message for an error while reading xml, then quit.
Definition Xml.cpp:25
Document & document()
Return the Document that this command will modify during redo and undo.
MainWindow & mainWindow()
Return the MainWindow so it can be updated by this command as a last step.
void saveOrCheckPostCommandDocumentStateHash(const Document &document)
Save, when called the first time, a hash value representing the state of the Document.
void restoreState()
Before any other operations associated with a Cmd class are performed, this method is called to resto...
void leafAttributes(const QXmlStreamAttributes &attributes, const QStringList &requiredAttributesLeaf, QXmlStreamReader &reader)
Same as often-used leafAndBaseAttributes, except this is used in the special case where a class inher...
void saveOrCheckPreCommandDocumentStateHash(const Document &document)
Save, when called the first time, a hash value representing the state of the Document.
void baseAttributes(QXmlStreamWriter &writer) const
After writing leaf class attributes, this writes the base class atributes.
void selectAddedPointsForMoving(const QStringList &pointsAdded)
Select points that were just added so they can be moved by the user next for convenience.
virtual void cmdRedo()
Redo method that is called when QUndoStack is moved one command forward.
virtual void cmdUndo()
Undo method that is called when QUndoStack is moved one command backward.
CmdAddPointsGraph(MainWindow &mainWindow, Document &document, const QString &curveName, const QList< QPoint > &points, const QList< double > &ordinals)
Constructor for normal creation.
virtual void saveXml(QXmlStreamWriter &writer) const
Save commands as xml for later uploading.
void saveDocumentState(const Document &document)
Save the document state for restoration by restoreDocumentState.
void restoreDocumentState(Document &document) const
Restore the document previously saved by saveDocumentState.
CmdPointChangeBase(MainWindow &mainWindow, Document &document, const QString &cmdDescription)
Single constructor.
Storage of one imported image and the data attached to that image.
Definition Document.h:44
void updatePointOrdinals(const Transformation &transformation)
Update point ordinals after point addition/removal or dragging.
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:201
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition MainWindow.h:95
void updateAfterCommand()
See GraphicsScene::updateAfterCommand.
#define LOG4CPP_INFO_S(logger)
Definition convenience.h:18