1 /****************************************************************************
2 **
3 ** Copyright (C) 2006-2009 fullmetalcoder <fullmetalcoder@hotmail.fr>
4 **
5 ** This file is part of the Edyuk project <http://edyuk.org>
6 **
7 ** This file may be used under the terms of the GNU General Public License
8 ** version 3 as published by the Free Software Foundation and appearing in the
9 ** file GPL.txt included in the packaging of this file.
10 **
11 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
12 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
13 **
14 ****************************************************************************/
15
16 #include "qlinechangepanel.h"
17
18 /*!
19 \file qlinechangepanel.cpp
20 \brief Implementation of the QLineChangePanel class.
21 */
22
23 #include "qeditor.h"
24
25 #include "qdocument.h"
26 #include "qdocumentline.h"
27
28 /*!
29 \ingroup widgets
30 @{
31 */
32
33 /*!
34 \class QLineMarkPanel
35 \brief A specific panel in charge of drawing line numbers of an editor
36
37 \see QEditorInterface
38 */
39
QCE_AUTO_REGISTER(QLineChangePanel)40 QCE_AUTO_REGISTER(QLineChangePanel)
41
42 /*!
43 \brief Constructor
44 */
45 QLineChangePanel::QLineChangePanel(QWidget *p)
46 : QPanel(p)
47 {
48 setFixedWidth(4);
49 setObjectName("lineChangePanel");
50 }
51
52 /*!
53 \brief Empty destructor
54 */
~QLineChangePanel()55 QLineChangePanel::~QLineChangePanel()
56 {
57
58 }
59
60 /*!
61
62 */
type() const63 QString QLineChangePanel::type() const
64 {
65 return "Line changes";
66 }
67
68 /*!
69 \internal
70 */
paint(QPainter * p,QEditor * e)71 bool QLineChangePanel::paint(QPainter *p, QEditor *e)
72 {
73 if ( !e || !e->document() )
74 return true;
75
76 int n;
77 qreal posY,
78 as = QFontMetricsF(e->document()->font()).ascent(),
79 ls = e->document()->getLineSpacing(),
80 pageBottom = e->viewport()->height(),
81 contentsY = e->verticalOffset();
82
83 QDocument *d = e->document();
84 n = d->lineNumber(contentsY);
85 posY = d->y(n) - contentsY;
86
87 for ( ; ; ++n )
88 {
89 //qDebug("n = %i; pos = %i", n, posY);
90 QDocumentLine line = d->line(n);
91
92 if ( line.isNull() || ((posY - as) > pageBottom) )
93 break;
94
95 if ( line.isHidden() )
96 continue;
97
98 int span = line.lineSpan();
99
100 if ( d->isLineModified(line) )
101 {
102 p->fillRect(QRectF(1, posY, 2, ls * span), QColor(255, 216, 0)); // yellow
103 } else if ( d->hasLineEverBeenModified(line) ) {
104 p->fillRect(QRectF(1, posY, 2, ls * span), QColor(70, 191, 0)); // green
105 }
106
107 posY += ls * span;
108 }
109
110 return true;
111 }
112
113 /*! @} */
114