KChart

KTextDocument.cpp
1 /*
2  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
3  *
4  * This file is part of the KD Chart library.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of
9  * the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see <https://www.gnu.org/licenses/>.
18  */
19 
20 #include "KTextDocument.h"
21 
22 #include "KChartMath_p.h"
23 
24 #include <QRect>
25 #include <QAbstractTextDocumentLayout>
26 #include <QtDebug>
27 #include <QTextBlock>
28 
29 // This is an internal class that mimicks some of the behavior of a
30 // QLabel with rich text assigned, this is mostly a workaround around
31 // QTextDocumentLayout not being a public class.
32 
33 KTextDocument::KTextDocument( QObject * p )
34  : QTextDocument( p ),
35  mHintValid( false ),
36  mSizeHint(),
37  mMinimumSizeHint()
38 {
39 
40 }
41 
42 KTextDocument::KTextDocument( const QString & text, QObject * p )
43  : QTextDocument( text, p ),
44  mHintValid( false ),
45  mSizeHint(),
46  mMinimumSizeHint()
47 {
48 
49 }
50 
51 KTextDocument::~KTextDocument() {}
52 
53 
54 QSize KTextDocument::sizeHint()
55 {
56  if ( !mHintValid )
57  (void)minimumSizeHint();
58  return mSizeHint;
59 }
60 
61 QSize KTextDocument::minimumSizeHint()
62 {
63  /*
64  QTextCursor cursor( this );
65  if ( ! cursor.atEnd() )
66  cursor.movePosition( QTextCursor::NextBlock );
67  qDebug() << "KTextDocument::minimumSizeHint() found:" << cursor.block().text();
68  QSizeF s( documentLayout()->blockBoundingRect( cursor.block() ).size() );
69  qDebug() << "KTextDocument::minimumSizeHint() found rect" << documentLayout()->blockBoundingRect( cursor.block());
70  return QSize( static_cast<int>(s.width()),
71  static_cast<int>(s.height()) );
72  */
73 
74  if ( mHintValid )
75  return mMinimumSizeHint;
76 
77  mHintValid = true;
78  mSizeHint = sizeForWidth( -1 );
79  QSize sz(-1, -1);
80 
81  // PENDING(kalle) Cache
82  sz.rwidth() = sizeForWidth( 0 ).width();
83  sz.rheight() = sizeForWidth( 32000 ).height();
84  if ( mSizeHint.height() < sz.height())
85  sz.rheight() = mSizeHint.height();
86 
87  mMinimumSizeHint = sz;
88  return sz;
89 }
90 
91 
92 QSize KTextDocument::sizeForWidth(int w)
93 {
94  Q_UNUSED( w );
95 
96  setPageSize(QSize(0, 100000));
97 
98  return documentLayout()->documentSize().toSize();
99 }
Class only listed here to document inheritance of some KChart classes.
Class only listed here to document inheritance of some KChart classes.
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