Engauge Digitizer 2
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CmdEditPointGraph.cpp
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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
18const 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,
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)"))
64 .arg (QObject::tr ("and/or"))
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
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
140
141void CmdEditPointGraph::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_EDIT_GRAPH_IS_X, m_isX ?
149 writer.writeAttribute(DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_Y, m_isY ?
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}
const QString CMD_DESCRIPTION("Edit curve points")
const QString DOCUMENT_SERIALIZE_IDENTIFIER
const QString DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_X
const QString DOCUMENT_SERIALIZE_POINT
const QString DOCUMENT_SERIALIZE_CMD
const QString DOCUMENT_SERIALIZE_CMD_TYPE
const QString DOCUMENT_SERIALIZE_EDIT_GRAPH_X
const QString DOCUMENT_SERIALIZE_CMD_EDIT_POINT_GRAPH
const QString DOCUMENT_SERIALIZE_EDIT_GRAPH_IS_Y
const QString DOCUMENT_SERIALIZE_EDIT_GRAPH_Y
const QString DOCUMENT_SERIALIZE_CMD_DESCRIPTION
const QString DOCUMENT_SERIALIZE_BOOL_TRUE
const QString DOCUMENT_SERIALIZE_BOOL_FALSE
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 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.
CmdEditPointGraph(MainWindow &mainWindow, Document &document, const QStringList &pointIdentifiers, bool isX, bool isY, double x, double y)
Constructor for normal creation.
virtual void cmdUndo()
Undo method that is called when QUndoStack is moved one command backward.
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 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:377
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