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(sliderMoved(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
  94 DolphinStatusBar::~DolphinStatusBar()
  95 {
  96 }
  97
  98 void DolphinStatusBar::setMessage(const QString& msg,
  99                                   Type type)
 100 {
 101     m_messageLabel->setMessage(msg, type);
 102
 103     const int widthGap = m_messageLabel->widthGap();
 104     if (widthGap > 0) {
 105         m_progressBar->hide();
 106         m_progressText->hide();
 107     }
 108     assureVisibleText();
 109 }
 110
 111 DolphinStatusBar::Type DolphinStatusBar::type() const
 112 {
 113     return m_messageLabel->type();
 114 }
 115
 116 QString DolphinStatusBar::message() const
 117 {
 118     return m_messageLabel->text();
 119 }
 120
 121 void DolphinStatusBar::setProgressText(const QString& text)
 122 {
 123     m_progressText->setText(text);
 124 }
 125
 126 QString DolphinStatusBar::progressText() const
 127 {
 128     return m_progressText->text();
 129 }
 130
 131 void DolphinStatusBar::setProgress(int percent)
 132 {
 133     if (percent < 0) {
 134         percent = 0;
 135     } else if (percent > 100) {
 136         percent = 100;
 137     }
 138
 139     m_progress = percent;
 140     if (m_messageLabel->type() == Error) {
 141         // don't update any widget or status bar text if an
 142         // error message is shown
 143         return;
 144     }
 145
 146     m_progressBar->setValue(m_progress);
 147     if (!m_progressBar->isVisible() || (percent == 100)) {
 148         QTimer::singleShot(300, this, SLOT(updateProgressInfo()));
 149     }
 150
 151     const QString& defaultText = m_messageLabel->defaultText();
 152     const QString msg(m_messageLabel->text());
 153     if ((percent == 0) && !msg.isEmpty()) {
 154         setMessage(QString(), Default);
 155     } else if ((percent == 100) && (msg != defaultText)) {
 156         setMessage(defaultText, Default);
 157     }
 158 }
 159
 160 void DolphinStatusBar::clear()
 161 {
 162     setMessage(m_messageLabel->defaultText(), Default);
 163 }
 164
 165 void DolphinStatusBar::setDefaultText(const QString& text)
 166 {
 167     m_messageLabel->setDefaultText(text);
 168 }
 169
 170 const QString& DolphinStatusBar::defaultText() const
 171 {
 172     return m_messageLabel->defaultText();
 173 }
 174
 175 void DolphinStatusBar::resizeEvent(QResizeEvent* event)
 176 {
 177     QWidget::resizeEvent(event);
 178     QMetaObject::invokeMethod(this, "assureVisibleText", Qt::QueuedConnection);
 179 }
 180
 181 void DolphinStatusBar::updateProgressInfo()
 182 {
 183     const bool isErrorShown = (m_messageLabel->type() == Error);
 184     if (m_progress < 100) {
 185         // show the progress information and hide the extensions
 186         setExtensionsVisible(false);
 187         if (!isErrorShown) {
 188             m_progressText->show();
 189             m_progressBar->show();
 190         }
 191     } else {
 192         // hide the progress information and show the extensions
 193         m_progressText->hide();
 194         m_progressBar->hide();
 195         assureVisibleText();
 196     }
 197 }
 198
 199 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 200 {
 201     m_spaceInfo->setUrl(url);
 202     assureVisibleText();
 203 }
 204
 205 void DolphinStatusBar::setZoomLevel(int zoomLevel)
 206 {
 207     m_view->setZoomLevel(zoomLevel);
 208 }
 209
 210 void DolphinStatusBar::assureVisibleText()
 211 {
 212     const int widthGap = m_messageLabel->widthGap();
 213     const bool isProgressBarVisible = m_progressBar->isVisible();
 214
 215     const int spaceInfoWidth  = m_spaceInfo->isVisible()  ? m_spaceInfo->width()  : 0;
 216     const int zoomSliderWidth = m_zoomSlider->isVisible() ? m_zoomSlider->width() : 0;
 217     const int widgetsWidth = spaceInfoWidth + zoomSliderWidth;
 218
 219     if (widgetsWidth > 0) {
 220         // The space information and (or) the zoom slider are (is) shown.
 221         // Hide them if the status bar text does not fit into the available width.
 222         if (widthGap > 0) {
 223             setExtensionsVisible(false);
 224         }
 225     } else if (!isProgressBarVisible && (widthGap + widgetsWidth <= 0)) {
 226         setExtensionsVisible(true);
 227     }
 228 }
 229
 230 void DolphinStatusBar::setExtensionsVisible(bool visible)
 231 {
 232     bool spaceInfoVisible = visible;
 233     bool zoomSliderVisible = visible;
 234     if (visible) {
 235         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 236         spaceInfoVisible = settings->showSpaceInfo();
 237         zoomSliderVisible = settings->showZoomSlider();
 238     }
 239
 240     m_spaceInfo->setVisible(spaceInfoVisible);
 241     m_zoomSlider->setVisible(zoomSliderVisible);
 242 }
 243
 244 #include "dolphinstatusbar.moc"