ground/gcs/src/libs/utils/mytabbedstackwidget.cpp

   1 /**
   2  ******************************************************************************
   3  *
   4  * @file       mytabbedstackwidget.cpp
   5  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
   6  *             Parts by Nokia Corporation (qt-info@nokia.com) Copyright (C) 2009.
   7  * @brief
   8  * @see        The GNU Public License (GPL) Version 3
   9  * @defgroup
  10  * @{
  11  *
  12  *****************************************************************************/
  13 /*
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 3 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful, but
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  21  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  22  * for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License along
  25  * with this program; if not, write to the Free Software Foundation, Inc.,
  26  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  27  */
  28 #include "mytabbedstackwidget.h"
  29 #include <QVBoxLayout>
  30 #include <QHBoxLayout>
  31 #include <QLabel>
  32 #include <QtCore/QDebug>
  33 #include <QScrollBar>
  34
  35 MyTabbedStackWidget::MyTabbedStackWidget(QWidget *parent, bool isVertical, bool iconAbove)
  36     : QWidget(parent),
  37     m_vertical(isVertical),
  38     m_iconAbove(iconAbove)
  39 {
  40     m_listWidget  = new QListWidget();
  41     m_listWidget->setObjectName("list");
  42     m_stackWidget = new QStackedWidget();
  43
  44     QBoxLayout *toplevelLayout;
  45     if (m_vertical) {
  46         toplevelLayout = new QHBoxLayout();
  47         toplevelLayout->addWidget(m_listWidget);
  48         toplevelLayout->addWidget(m_stackWidget);
  49         m_listWidget->setFlow(QListView::TopToBottom);
  50         m_listWidget->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
  51         m_listWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  52     } else {
  53         toplevelLayout = new QVBoxLayout();
  54         toplevelLayout->addWidget(m_stackWidget);
  55         toplevelLayout->addWidget(m_listWidget);
  56         m_listWidget->setFlow(QListView::LeftToRight);
  57         m_listWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
  58         m_listWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  59     }
  60
  61     if (m_iconAbove && m_vertical) {
  62         m_listWidget->setFixedWidth(LIST_VIEW_WIDTH); // this should be computed instead
  63         m_listWidget->setWrapping(false);
  64     }
  65
  66     m_listWidget->setContentsMargins(0, 0, 0, 0);
  67     m_listWidget->setSpacing(0);
  68     m_listWidget->setViewMode(QListView::IconMode);
  69     m_listWidget->setMovement(QListView::Static);
  70     m_listWidget->setUniformItemSizes(true);
  71     m_listWidget->setStyleSheet("#list {border: 0px; margin-left: 9px; margin-top: 9px; background-color: transparent; }");
  72
  73     m_stackWidget->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
  74     m_stackWidget->setContentsMargins(0, 0, 0, 0);
  75
  76     toplevelLayout->setSpacing(0);
  77     toplevelLayout->setContentsMargins(0, 0, 0, 0);
  78     setLayout(toplevelLayout);
  79
  80     connect(m_listWidget, SIGNAL(currentRowChanged(int)), this, SLOT(showWidget(int)), Qt::QueuedConnection);
  81 }
  82
  83 void MyTabbedStackWidget::insertTab(const int index, QWidget *tab, const QIcon &icon, const QString &label)
  84 {
  85     // create and insert item
  86     QListWidgetItem *item = new QListWidgetItem(icon, label);
  87
  88     item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
  89     item->setTextAlignment(Qt::AlignHCenter | Qt::AlignBottom);
  90     item->setToolTip(label);
  91     m_listWidget->insertItem(index, item);
  92
  93     // setup and insert widget
  94     tab->setContentsMargins(0, 0, 0, 0);
  95     m_stackWidget->insertWidget(index, tab);
  96 }
  97
  98 void MyTabbedStackWidget::replaceTab(int index, QWidget *tab)
  99 {
 100     QWidget *wid = m_stackWidget->widget(index);
 101
 102     // setup and insert new widget
 103     tab->setContentsMargins(0, 0, 0, 0);
 104     m_stackWidget->insertWidget(index, tab);
 105     // check special case when replacing currenlty selected tab
 106     if (index == currentIndex()) {
 107         // currently selected tab is being replaced so select the new tab before removing the old one
 108         m_stackWidget->setCurrentWidget(tab);
 109     }
 110     // remove and delete old widget
 111     m_stackWidget->removeWidget(wid);
 112     delete wid;
 113 }
 114
 115 void MyTabbedStackWidget::removeTab(int index)
 116 {
 117     QWidget *wid = m_stackWidget->widget(index);
 118
 119     m_stackWidget->removeWidget(wid);
 120     delete wid;
 121
 122     QListWidgetItem *item = m_listWidget->item(index);
 123     m_listWidget->removeItemWidget(item);
 124     delete item;
 125 }
 126
 127 void MyTabbedStackWidget::setWidgetsEnabled(bool enabled)
 128 {
 129     for (int i = 0; i < m_stackWidget->count(); i++) {
 130         m_stackWidget->widget(i)->setEnabled(enabled);
 131     }
 132 }
 133
 134 int MyTabbedStackWidget::currentIndex() const
 135 {
 136     return m_listWidget->currentRow();
 137 }
 138
 139 void MyTabbedStackWidget::setCurrentIndex(int index)
 140 {
 141     m_listWidget->setCurrentRow(index);
 142 }
 143
 144 void MyTabbedStackWidget::showWidget(int index)
 145 {
 146     if (m_stackWidget->currentIndex() == index) {
 147         return;
 148     }
 149     bool proceed = false;
 150     emit currentAboutToShow(index, &proceed);
 151     if (proceed) {
 152         m_stackWidget->setCurrentIndex(index);
 153         emit currentChanged(index);
 154     } else {
 155         m_listWidget->setCurrentRow(m_stackWidget->currentIndex(), QItemSelectionModel::ClearAndSelect);
 156     }
 157 }
 158
 159 void MyTabbedStackWidget::resizeEvent(QResizeEvent *event)
 160 {
 161     QWidget::resizeEvent(event);
 162
 163     m_listWidget->setFixedWidth(m_listWidget->verticalScrollBar()->isVisible() ? LIST_VIEW_WIDTH + 20 : LIST_VIEW_WIDTH);
 164 }
 165
 166 void MyTabbedStackWidget::insertCornerWidget(int index, QWidget *widget)
 167 {
 168     Q_UNUSED(index);
 169
 170     widget->hide();
 171 }