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
KTextDocument(QObject * p)33 KTextDocument::KTextDocument( QObject * p )
34 : QTextDocument( p ),
35 mHintValid( false ),
36 mSizeHint(),
37 mMinimumSizeHint()
38 {
39
40 }
41
KTextDocument(const QString & text,QObject * p)42 KTextDocument::KTextDocument( const QString & text, QObject * p )
43 : QTextDocument( text, p ),
44 mHintValid( false ),
45 mSizeHint(),
46 mMinimumSizeHint()
47 {
48
49 }
50
~KTextDocument()51 KTextDocument::~KTextDocument() {}
52
53
sizeHint()54 QSize KTextDocument::sizeHint()
55 {
56 if ( !mHintValid )
57 (void)minimumSizeHint();
58 return mSizeHint;
59 }
60
minimumSizeHint()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
sizeForWidth(int w)92 QSize KTextDocument::sizeForWidth(int w)
93 {
94 Q_UNUSED( w );
95
96 setPageSize(QSize(0, 100000));
97
98 return documentLayout()->documentSize().toSize();
99 }
100