ui/qt/label_stack.cpp

   1 /* label_stack.cpp
   2  *
   3  * $Id$
   4  *
   5  * Wireshark - Network traffic analyzer
   6  * By Gerald Combs <gerald@wireshark.org>
   7  * Copyright 1998 Gerald Combs
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  */
  23
  24 #include "label_stack.h"
  25 #include <QMouseEvent>
  26 #include <QContextMenuEvent>
  27
  28 #include "tango_colors.h"
  29
  30 /* Temporary message timeouts */
  31 const int temporary_interval_ = 1000;
  32 const int temporary_msg_timeout_ = temporary_interval_ * 9;
  33 const int temporary_flash_timeout_ = temporary_interval_ / 5;
  34 const int num_flashes_ = 3;
  35
  36 LabelStack::LabelStack(QWidget *parent) :
  37     QLabel(parent)
  38 {
  39 #ifdef Q_OS_MAC
  40     setAttribute(Qt::WA_MacSmallSize, true);
  41 #endif
  42     temporary_ctx_ = -1;
  43     fillLabel();
  44
  45     connect(&temporary_timer_, SIGNAL(timeout()), this, SLOT(updateTemporaryStatus()));
  46 }
  47
  48 void LabelStack::setTemporaryContext(const int ctx) {
  49     temporary_ctx_ = ctx;
  50 }
  51
  52 void LabelStack::fillLabel() {
  53     StackItem *si;
  54     QString style_sheet;
  55
  56     style_sheet =
  57             "QLabel {"
  58             "  margin-left: 0.5em;";
  59
  60     if (labels_.isEmpty()) {
  61         clear();
  62         return;
  63     }
  64
  65     si = labels_.first();
  66
  67     if (si->ctx == temporary_ctx_) {
  68         style_sheet += QString(
  69                     "  border-radius: 0.25em;"
  70                     "  color: #%1;"
  71                     "  background-color: #%2;"
  72                     )
  73                 .arg(ws_css_warn_text, 6, 16, QChar('0'))
  74                 .arg(ws_css_warn_background, 6, 16, QChar('0'));
  75     }
  76
  77     style_sheet += "}";
  78     setStyleSheet(style_sheet);
  79     setText(si->text);
  80 }
  81
  82 void LabelStack::pushText(QString &text, int ctx) {
  83     StackItem *si = new StackItem;
  84
  85     if (ctx == temporary_ctx_) {
  86         temporary_timer_.stop();
  87         popText(temporary_ctx_);
  88
  89         temporary_epoch_.start();
  90         temporary_timer_.start(temporary_flash_timeout_);
  91         emit toggleTemporaryFlash(true);
  92     }
  93
  94     si->text = text;
  95     si->ctx = ctx;
  96     labels_.prepend(si);
  97     fillLabel();
  98 }
  99
 100 void LabelStack::mousePressEvent(QMouseEvent *event)
 101 {
 102     if (event->button() == Qt::LeftButton)
 103         emit mousePressedAt(QPoint(event->globalPos()), Qt::LeftButton);
 104 }
 105
 106 void LabelStack::mouseReleaseEvent(QMouseEvent *event)
 107 {
 108     Q_UNUSED(event);
 109 }
 110
 111 void LabelStack::mouseDoubleClickEvent(QMouseEvent *event)
 112 {
 113     Q_UNUSED(event);
 114 }
 115
 116 void LabelStack::mouseMoveEvent(QMouseEvent *event)
 117 {
 118     Q_UNUSED(event);
 119 }
 120
 121 void LabelStack::contextMenuEvent(QContextMenuEvent *event)
 122 {
 123     emit mousePressedAt(QPoint(event->globalPos()), Qt::RightButton);
 124 }
 125
 126 void LabelStack::popText(int ctx) {
 127     QMutableListIterator<StackItem *> iter(labels_);
 128
 129     while (iter.hasNext()) {
 130         if (iter.next()->ctx == ctx) {
 131             iter.remove();
 132             break;
 133         }
 134     }
 135
 136     fillLabel();
 137 }
 138
 139 void LabelStack::updateTemporaryStatus() {
 140     if (temporary_epoch_.elapsed() >= temporary_msg_timeout_) {
 141         popText(temporary_ctx_);
 142         emit toggleTemporaryFlash(false);
 143         temporary_timer_.stop();
 144     } else {
 145         for (int i = (num_flashes_ * 2); i > 0; i--) {
 146             if (temporary_epoch_.elapsed() >= temporary_flash_timeout_ * i) {
 147                 emit toggleTemporaryFlash(i % 2);
 148                 break;
 149             }
 150         }
 151     }
 152 }
 153
 154 /*
 155  * Editor modelines
 156  *
 157  * Local Variables:
 158  * c-basic-offset: 4
 159  * tab-width: 8
 160  * indent-tabs-mode: nil
 161  * End:
 162  *
 163  * ex: set shiftwidth=4 tabstop=8 expandtab:
 164  * :indentSize=4:tabSize=8:noTabs=true:
 165  */