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 "QtToString.h"
15#include <QXmlStreamReader>
16#include <QXmlStreamWriter>
17#include "Xml.h"
18
19const 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,
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"))
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
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
131
132void CmdAddPointsGraph::saveXml (QXmlStreamWriter &writer) const
133{
134 writer.writeStartElement(DOCUMENT_SERIALIZE_CMD);
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}
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 saveOrCheckPreCommandDocumentStateHash(const Document &document)
Save, when called the first time, a hash value representing the state of the Document.
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.
Base class for CmdBase leaf subclasses that involve point additions, deletions and/or modifications.
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.
Storage of one imported image and the data attached to that image.
Definition Document.h:42
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:195
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition MainWindow.h:92
void updateAfterCommand()
See GraphicsScene::updateAfterCommand.
#define LOG4CPP_INFO_S(logger)
Definition convenience.h:18