1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/* related_packet_delegate.cpp
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "related_packet_delegate.h"
#include "packet_list_record.h"
#include <QPainter>
#include <QApplication>
void RelatedPacketDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
int en_w = option.fontMetrics.height() / 2;
QStyleOptionViewItemV4 optv4 = option;
QStyledItemDelegate::initStyleOption(&optv4, index);
optv4.features |= QStyleOptionViewItemV4::HasDecoration;
optv4.decorationSize.setHeight(1);
optv4.decorationSize.setWidth(en_w);
QStyledItemDelegate::paint(painter, optv4, index);
const frame_data *fd;
PacketListRecord *record = static_cast<PacketListRecord*>(index.internalPointer());
if (!record || (fd = record->frameData()) == NULL) {
return;
}
painter->save();
if (QApplication::style()->objectName().contains("vista")) {
// QWindowsVistaStyle::drawControl does this internally. Unfortunately there
// doesn't appear to be a more general way to do this.
optv4.palette.setColor(QPalette::All, QPalette::HighlightedText, optv4.palette.color(QPalette::Active, QPalette::Text));
}
QPalette::ColorGroup cg = optv4.state & QStyle::State_Enabled
? QPalette::Normal : QPalette::Disabled;
QColor fg;
if (cg == QPalette::Normal && !(optv4.state & QStyle::State_Active))
cg = QPalette::Inactive;
if (optv4.state & QStyle::State_Selected) {
fg = optv4.palette.color(cg, QPalette::HighlightedText);
} else {
fg = optv4.palette.color(cg, QPalette::Text);
}
qreal alpha = 0.20; // Arbitrary. Should arguably be a preference.
// We draw in the same place more than once so we first draw on a
// QImage at 100% opacity then draw that on our packet list item.
QImage overlay = QImage(en_w * 2, optv4.rect.height(), QImage::Format_ARGB32_Premultiplied);
QPainter op(&overlay);
overlay.fill(Qt::transparent);
op.setPen(fg);
op.translate(en_w + 0.5, 0.5);
op.setRenderHint(QPainter::Antialiasing, true);
// The current decorations are based on what looked good and were easy
// to code. W might want to improve them by drawing small dots or tick
// marks for frames in the same conversation XOR draw a gap for unrelated
// frames.
if (first_frame_ > 0 && last_frame_ > 0 && first_frame_ != last_frame_) {
int height = optv4.rect.height();
if ((int) fd->num == first_frame_) {
op.drawLine(0, height / 2, 0, height);
op.drawLine(1, height / 2, en_w, height / 2);
} else if ((int) fd->num > first_frame_ && (int) fd->num < last_frame_) {
op.drawLine(0, 0, 0, height);
} else if ((int) fd->num == last_frame_) {
op.drawLine(0, 0, 0, height / 2);
op.drawLine(1, height / 2, en_w, height / 2);
}
}
if (related_frames_.contains(fd->num)) {
op.setBrush(fg);
op.drawEllipse(QPointF(0.0, optv4.rect.height() / 2), 2, 2);
}
painter->setOpacity(alpha);
painter->drawImage(optv4.rect.x(), optv4.rect.y(), overlay);
painter->restore();
}
QSize RelatedPacketDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const {
return QSize(option.fontMetrics.height() + QStyledItemDelegate::sizeHint(option, index).width(),
QStyledItemDelegate::sizeHint(option, index).height());
}
void RelatedPacketDelegate::clear()
{
related_frames_.clear();
first_frame_ = last_frame_ = -1;
}
void RelatedPacketDelegate::addRelatedFrame(int frame_num)
{
related_frames_ << frame_num;
}
void RelatedPacketDelegate::setConversationSpan(int first_frame, int last_frame)
{
first_frame_ = first_frame;
last_frame_ = last_frame;
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
|
