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_zoomTimer(0),
  43     m_progressBar(0),
  44     m_progress(100),
  45     m_requestedZoomLevel(0)
  46 {
  47     setSpacing(4);
  48
  49     connect(m_view, SIGNAL(urlChanged(const KUrl&)),
  50             this, SLOT(updateSpaceInfoContent(const KUrl&)));
  51
  52     // initialize message label
  53     m_messageLabel = new StatusBarMessageLabel(this);
  54     m_messageLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
  55
  56     // initialize space information
  57     m_spaceInfo = new StatusBarSpaceInfo(this);
  58     m_spaceInfo->setUrl(m_view->url());
  59
  60     // initialize zoom slider
  61     m_zoomSlider = new QSlider(Qt::Horizontal, this);
  62     m_zoomSlider->setPageStep(1);
  63
  64     const int min = ZoomLevelInfo::minimumLevel();
  65     const int max = ZoomLevelInfo::maximumLevel();
  66     m_zoomSlider->setRange(min, max);
  67     m_zoomSlider->setValue(view->zoomLevel());
  68
  69     connect(m_zoomSlider, SIGNAL(sliderMoved(int)),
  70             this, SLOT(requestZoomLevel(int)));
  71     connect(m_view, SIGNAL(zoomLevelChanged(int)),
  72             m_zoomSlider, SLOT(setValue(int)));
  73
  74     m_zoomTimer = new QTimer(this);
  75     m_zoomTimer->setSingleShot(true);
  76     m_zoomTimer->setInterval(50);
  77     connect(m_zoomTimer, SIGNAL(timeout()),
  78             this, SLOT(updateZoomLevel()));
  79
  80     // initialize progress informatino
  81     m_progressText = new QLabel(this);
  82     m_progressText->hide();
  83
  84     m_progressBar = new QProgressBar(this);
  85     m_progressBar->hide();
  86
  87     // initialize sizes
  88     const int contentHeight = QFontMetrics(m_messageLabel->font()).height() + 4;
  89     const int barHeight = contentHeight + 4;
  90
  91     setMinimumHeight(barHeight);
  92     m_messageLabel->setMinimumTextHeight(barHeight);
  93     m_spaceInfo->setFixedHeight(contentHeight);
  94     m_progressBar->setFixedHeight(contentHeight);
  95     m_progressBar->setMaximumWidth(200);
  96     m_zoomSlider->setMaximumWidth(100);
  97
  98     setExtensionsVisible(true);
  99 }
 100
 101
 102 DolphinStatusBar::~DolphinStatusBar()
 103 {
 104 }
 105
 106 void DolphinStatusBar::setMessage(const QString& msg,
 107                                   Type type)
 108 {
 109     m_messageLabel->setMessage(msg, type);
 110
 111     const int widthGap = m_messageLabel->widthGap();
 112     if (widthGap > 0) {
 113         m_progressBar->hide();
 114         m_progressText->hide();
 115     }
 116     assureVisibleText();
 117 }
 118
 119 DolphinStatusBar::Type DolphinStatusBar::type() const
 120 {
 121     return m_messageLabel->type();
 122 }
 123
 124 QString DolphinStatusBar::message() const
 125 {
 126     return m_messageLabel->text();
 127 }
 128
 129 void DolphinStatusBar::setProgressText(const QString& text)
 130 {
 131     m_progressText->setText(text);
 132 }
 133
 134 QString DolphinStatusBar::progressText() const
 135 {
 136     return m_progressText->text();
 137 }
 138
 139 void DolphinStatusBar::setProgress(int percent)
 140 {
 141     if (percent < 0) {
 142         percent = 0;
 143     } else if (percent > 100) {
 144         percent = 100;
 145     }
 146
 147     m_progress = percent;
 148     if (m_messageLabel->type() == Error) {
 149         // don't update any widget or status bar text if an
 150         // error message is shown
 151         return;
 152     }
 153
 154     m_progressBar->setValue(m_progress);
 155     if (!m_progressBar->isVisible() || (percent == 100)) {
 156         QTimer::singleShot(300, this, SLOT(updateProgressInfo()));
 157     }
 158
 159     const QString& defaultText = m_messageLabel->defaultText();
 160     const QString msg(m_messageLabel->text());
 161     if ((percent == 0) && !msg.isEmpty()) {
 162         setMessage(QString(), Default);
 163     } else if ((percent == 100) && (msg != defaultText)) {
 164         setMessage(defaultText, Default);
 165     }
 166 }
 167
 168 void DolphinStatusBar::clear()
 169 {
 170     setMessage(m_messageLabel->defaultText(), Default);
 171 }
 172
 173 void DolphinStatusBar::setDefaultText(const QString& text)
 174 {
 175     m_messageLabel->setDefaultText(text);
 176 }
 177
 178 const QString& DolphinStatusBar::defaultText() const
 179 {
 180     return m_messageLabel->defaultText();
 181 }
 182
 183 void DolphinStatusBar::resizeEvent(QResizeEvent* event)
 184 {
 185     QWidget::resizeEvent(event);
 186     QMetaObject::invokeMethod(this, "assureVisibleText", Qt::QueuedConnection);
 187 }
 188
 189 void DolphinStatusBar::updateProgressInfo()
 190 {
 191     const bool isErrorShown = (m_messageLabel->type() == Error);
 192     if (m_progress < 100) {
 193         // show the progress information and hide the extensions
 194         setExtensionsVisible(false);
 195         if (!isErrorShown) {
 196             m_progressText->show();
 197             m_progressBar->show();
 198         }
 199     } else {
 200         // hide the progress information and show the extensions
 201         m_progressText->hide();
 202         m_progressBar->hide();
 203         assureVisibleText();
 204     }
 205 }
 206
 207 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 208 {
 209     m_spaceInfo->setUrl(url);
 210     assureVisibleText();
 211 }
 212
 213 void DolphinStatusBar::requestZoomLevel(int zoomLevel)
 214 {
 215     m_requestedZoomLevel = zoomLevel;
 216     m_zoomTimer->start();
 217 }
 218
 219 void DolphinStatusBar::updateZoomLevel()
 220 {
 221     m_view->setZoomLevel(m_requestedZoomLevel);
 222 }
 223
 224 void DolphinStatusBar::assureVisibleText()
 225 {
 226     const int widthGap = m_messageLabel->widthGap();
 227     const bool isProgressBarVisible = m_progressBar->isVisible();
 228
 229     const int spaceInfoWidth  = m_spaceInfo->isVisible()  ? m_spaceInfo->width()  : 0;
 230     const int zoomSliderWidth = m_zoomSlider->isVisible() ? m_zoomSlider->width() : 0;
 231     const int widgetsWidth = spaceInfoWidth + zoomSliderWidth;
 232
 233     if (widgetsWidth > 0) {
 234         // The space information and (or) the zoom slider are (is) shown.
 235         // Hide them if the status bar text does not fit into the available width.
 236         if (widthGap > 0) {
 237             setExtensionsVisible(false);
 238         }
 239     } else if (!isProgressBarVisible && (widthGap + widgetsWidth <= 0)) {
 240         setExtensionsVisible(true);
 241     }
 242 }
 243
 244 void DolphinStatusBar::setExtensionsVisible(bool visible)
 245 {
 246     bool spaceInfoVisible = visible;
 247     bool zoomSliderVisible = visible;
 248     if (visible) {
 249         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 250         spaceInfoVisible = settings->showSpaceInfo();
 251         zoomSliderVisible = settings->showZoomSlider();
 252     }
 253
 254     m_spaceInfo->setVisible(spaceInfoVisible);
 255     m_zoomSlider->setVisible(zoomSliderVisible);
 256 }
 257
 258 #include "dolphinstatusbar.moc"