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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* label_stack.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 <ui/qt/widgets/label_stack.h>
#include <QContextMenuEvent>
#include <QPainter>
#include <QMouseEvent>
#include <QStyleOption>
#include <ui/qt/utils/tango_colors.h>
/* Temporary message timeouts */
const int temporary_interval_ = 1000;
const int temporary_msg_timeout_ = temporary_interval_ * 9;
const int temporary_flash_timeout_ = temporary_interval_ / 5;
const int num_flashes_ = 3;
LabelStack::LabelStack(QWidget *parent) :
QLabel(parent),
temporary_ctx_(-1),
shrinkable_(false)
{
#ifdef Q_OS_MAC
setAttribute(Qt::WA_MacSmallSize, true);
#endif
fillLabel();
connect(&temporary_timer_, SIGNAL(timeout()), this, SLOT(updateTemporaryStatus()));
}
void LabelStack::setTemporaryContext(const int ctx) {
temporary_ctx_ = ctx;
}
void LabelStack::fillLabel() {
StackItem si;
QString style_sheet;
style_sheet =
"QLabel {"
" margin-left: 0.5em;";
if (labels_.isEmpty()) {
clear();
return;
}
si = labels_.first();
if (si.ctx == temporary_ctx_) {
style_sheet += QString(
" border-radius: 0.25em;"
" color: #%1;"
" background-color: #%2;"
)
.arg(ws_css_warn_text, 6, 16, QChar('0'))
.arg(ws_css_warn_background, 6, 16, QChar('0'));
}
style_sheet += "}";
if (styleSheet().size() != style_sheet.size()) {
// Can be computationally expensive.
setStyleSheet(style_sheet);
}
setText(si.text);
}
void LabelStack::pushText(const QString &text, int ctx) {
popText(ctx);
if (ctx == temporary_ctx_) {
temporary_timer_.stop();
temporary_epoch_.start();
temporary_timer_.start(temporary_flash_timeout_);
emit toggleTemporaryFlash(true);
}
StackItem si;
si.text = text;
si.ctx = ctx;
labels_.prepend(si);
fillLabel();
}
void LabelStack::setShrinkable(bool shrinkable)
{
shrinkable_ = shrinkable;
int min_width = 0;
if (shrinkable) {
min_width = fontMetrics().height() * 5; // em-widths
}
setMinimumWidth(min_width);
fillLabel();
}
void LabelStack::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton)
emit mousePressedAt(QPoint(event->globalPos()), Qt::LeftButton);
}
void LabelStack::mouseReleaseEvent(QMouseEvent *)
{
}
void LabelStack::mouseDoubleClickEvent(QMouseEvent *)
{
}
void LabelStack::mouseMoveEvent(QMouseEvent *)
{
}
void LabelStack::contextMenuEvent(QContextMenuEvent *event)
{
emit mousePressedAt(QPoint(event->globalPos()), Qt::RightButton);
}
void LabelStack::paintEvent(QPaintEvent *event)
{
if (!shrinkable_) {
QLabel::paintEvent(event);
return;
}
QFrame::paintEvent(event);
QString elided_text = fontMetrics().elidedText(text(), Qt::ElideMiddle, width());
QPainter painter(this);
QRect contents_rect = contentsRect();
QStyleOption opt;
contents_rect.adjust(margin(), margin(), -margin(), -margin());
opt.initFrom(this);
style()->drawItemText(&painter, contents_rect, alignment(), opt.palette,
isEnabled(), elided_text, foregroundRole());
}
void LabelStack::popText(int ctx) {
QMutableListIterator<StackItem> iter(labels_);
while (iter.hasNext()) {
if (iter.next().ctx == ctx) {
iter.remove();
break;
}
}
fillLabel();
}
void LabelStack::updateTemporaryStatus() {
if (temporary_epoch_.elapsed() >= temporary_msg_timeout_) {
popText(temporary_ctx_);
emit toggleTemporaryFlash(false);
temporary_timer_.stop();
} else {
for (int i = (num_flashes_ * 2); i > 0; i--) {
if (temporary_epoch_.elapsed() >= temporary_flash_timeout_ * i) {
emit toggleTemporaryFlash(i % 2);
break;
}
}
}
}
/*
* 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:
*/
|
