src/dolphinstatusbar.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz                                      *
   3  *   peter.penz@gmx.at                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #include "dolphinstatusbar.h"
  22 #include "dolphinsettings.h"
  23 #include "dolphinview.h"
  24 #include "dolphin_generalsettings.h"
  25 #include "statusbarmessagelabel.h"
  26 #include "statusbarspaceinfo.h"
  27 #include "zoomlevelinfo.h"
  28
  29 #include <QtGui/QLabel>
  30 #include <QtGui/QProgressBar>
  31 #include <QtCore/QTimer>
  32
  33 #include <kiconloader.h>
  34 #include <kvbox.h>
  35
  36 DolphinStatusBar::DolphinStatusBar(QWidget* parent, DolphinView* view) :
  37     KHBox(parent),
  38     m_view(view),
  39     m_messageLabel(0),
  40     m_spaceInfo(0),
  41     m_zoomSlider(0),
  42     m_progressBar(0),
  43     m_progress(100)
  44 {
  45     setSpacing(4);
  46
  47     connect(m_view, SIGNAL(urlChanged(const KUrl&)),
  48             this, SLOT(updateSpaceInfoContent(const KUrl&)));
  49
  50     // initialize message label
  51     m_messageLabel = new StatusBarMessageLabel(this);
  52     m_messageLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
  53
  54     // initialize space information
  55     m_spaceInfo = new StatusBarSpaceInfo(this);
  56     m_spaceInfo->setUrl(m_view->url());
  57
  58     // initialize zoom slider
  59     m_zoomSlider = new QSlider(Qt::Horizontal, this);
  60     m_zoomSlider->setPageStep(1);
  61
  62     const int min = ZoomLevelInfo::minimumLevel();
  63     const int max = ZoomLevelInfo::maximumLevel();
  64     m_zoomSlider->setRange(min, max);
  65     m_zoomSlider->setValue(view->zoomLevel());
  66
  67     connect(m_zoomSlider, SIGNAL(valueChanged(int)),
  68             this, SLOT(setZoomLevel(int)));
  69     connect(m_view, SIGNAL(zoomLevelChanged(int)),
  70             m_zoomSlider, SLOT(setValue(int)));
  71
  72     // initialize progress informatino
  73     m_progressText = new QLabel(this);
  74     m_progressText->hide();
  75
  76     m_progressBar = new QProgressBar(this);
  77     m_progressBar->hide();
  78
  79     // initialize sizes
  80     const int contentHeight = QFontMetrics(m_messageLabel->font()).height() + 4;
  81     const int barHeight = contentHeight + 4;
  82
  83     setMinimumHeight(barHeight);
  84     m_messageLabel->setMinimumTextHeight(barHeight);
  85     m_spaceInfo->setFixedHeight(contentHeight);
  86     m_progressBar->setFixedHeight(contentHeight);
  87     m_progressBar->setMaximumWidth(200);
  88     m_zoomSlider->setMaximumWidth(100);
  89
  90     setExtensionsVisible(true);
  91 }
  92
  93 DolphinStatusBar::~DolphinStatusBar()
  94 {
  95 }
  96
  97 void DolphinStatusBar::setMessage(const QString& msg,
  98                                   Type type)
  99 {
 100     m_messageLabel->setMessage(msg, type);
 101
 102     const int widthGap = m_messageLabel->widthGap();
 103     if (widthGap > 0) {
 104         m_progressBar->hide();
 105         m_progressText->hide();
 106     }
 107     assureVisibleText();
 108 }
 109
 110 DolphinStatusBar::Type DolphinStatusBar::type() const
 111 {
 112     return m_messageLabel->type();
 113 }
 114
 115 QString DolphinStatusBar::message() const
 116 {
 117     return m_messageLabel->text();
 118 }
 119
 120 void DolphinStatusBar::setProgressText(const QString& text)
 121 {
 122     m_progressText->setText(text);
 123 }
 124
 125 QString DolphinStatusBar::progressText() const
 126 {
 127     return m_progressText->text();
 128 }
 129
 130 void DolphinStatusBar::setProgress(int percent)
 131 {
 132     if (percent < 0) {
 133         percent = 0;
 134     } else if (percent > 100) {
 135         percent = 100;
 136     }
 137
 138     m_progress = percent;
 139     if (m_messageLabel->type() == Error) {
 140         // don't update any widget or status bar text if an
 141         // error message is shown
 142         return;
 143     }
 144
 145     m_progressBar->setValue(m_progress);
 146     if (!m_progressBar->isVisible() || (percent == 100)) {
 147         QTimer::singleShot(300, this, SLOT(updateProgressInfo()));
 148     }
 149
 150     const QString& defaultText = m_messageLabel->defaultText();
 151     const QString msg(m_messageLabel->text());
 152     if ((percent == 0) && !msg.isEmpty()) {
 153         setMessage(QString(), Default);
 154     } else if ((percent == 100) && (msg != defaultText)) {
 155         setMessage(defaultText, Default);
 156     }
 157 }
 158
 159 void DolphinStatusBar::clear()
 160 {
 161     setMessage(m_messageLabel->defaultText(), Default);
 162 }
 163
 164 void DolphinStatusBar::setDefaultText(const QString& text)
 165 {
 166     m_messageLabel->setDefaultText(text);
 167 }
 168
 169 const QString& DolphinStatusBar::defaultText() const
 170 {
 171     return m_messageLabel->defaultText();
 172 }
 173
 174 void DolphinStatusBar::refresh()
 175 {
 176     setExtensionsVisible(true);
 177     assureVisibleText();
 178 }
 179
 180 void DolphinStatusBar::resizeEvent(QResizeEvent* event)
 181 {
 182     QWidget::resizeEvent(event);
 183     QMetaObject::invokeMethod(this, "assureVisibleText", Qt::QueuedConnection);
 184 }
 185
 186 void DolphinStatusBar::updateProgressInfo()
 187 {
 188     const bool isErrorShown = (m_messageLabel->type() == Error);
 189     if (m_progress < 100) {
 190         // show the progress information and hide the extensions
 191         setExtensionsVisible(false);
 192         if (!isErrorShown) {
 193             m_progressText->show();
 194             m_progressBar->show();
 195         }
 196     } else {
 197         // hide the progress information and show the extensions
 198         m_progressText->hide();
 199         m_progressBar->hide();
 200         assureVisibleText();
 201     }
 202 }
 203
 204 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 205 {
 206     m_spaceInfo->setUrl(url);
 207     assureVisibleText();
 208 }
 209
 210 void DolphinStatusBar::setZoomLevel(int zoomLevel)
 211 {
 212     m_view->setZoomLevel(zoomLevel);
 213 }
 214
 215 void DolphinStatusBar::assureVisibleText()
 216 {
 217     const int widthGap = m_messageLabel->widthGap();
 218     const bool isProgressBarVisible = m_progressBar->isVisible();
 219
 220     const int spaceInfoWidth  = m_spaceInfo->isVisible()  ? m_spaceInfo->width()  : 0;
 221     const int zoomSliderWidth = m_zoomSlider->isVisible() ? m_zoomSlider->width() : 0;
 222     const int widgetsWidth = spaceInfoWidth + zoomSliderWidth;
 223
 224     if (widgetsWidth > 0) {
 225         // The space information and (or) the zoom slider are (is) shown.
 226         // Hide them if the status bar text does not fit into the available width.
 227         if (widthGap > 0) {
 228             setExtensionsVisible(false);
 229         }
 230     } else if (!isProgressBarVisible && (widthGap + widgetsWidth <= 0)) {
 231         setExtensionsVisible(true);
 232     }
 233 }
 234
 235 void DolphinStatusBar::setExtensionsVisible(bool visible)
 236 {
 237     bool spaceInfoVisible = visible;
 238     bool zoomSliderVisible = visible;
 239     if (visible) {
 240         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 241         spaceInfoVisible = settings->showSpaceInfo();
 242         zoomSliderVisible = settings->showZoomSlider();
 243     }
 244
 245     m_spaceInfo->setVisible(spaceInfoVisible);
 246     m_zoomSlider->setVisible(zoomSliderVisible);
 247 }
 248
 249 #include "dolphinstatusbar.moc"