src/statusbar/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
  23 #include "dolphin_generalsettings.h"
  24
  25 #include <KIconLoader>
  26 #include <KIcon>
  27 #include <KLocale>
  28 #include <KMenu>
  29 #include <KVBox>
  30
  31 #include "statusbarspaceinfo.h"
  32
  33 #include <QApplication>
  34 #include <QClipboard>
  35 #include <QHBoxLayout>
  36 #include <QLabel>
  37 #include <QProgressBar>
  38 #include <QToolButton>
  39 #include <QTime>
  40 #include <QTimer>
  41
  42 #include <views/dolphinview.h>
  43 #include <views/zoomlevelinfo.h>
  44
  45 DolphinStatusBar::DolphinStatusBar(QWidget* parent, DolphinView* view) :
  46     QWidget(parent),
  47     m_view(view),
  48     m_messageLabel(0),
  49     m_spaceInfo(0),
  50     m_zoomSlider(0),
  51     m_progressBar(0),
  52     m_stopButton(0),
  53     m_progress(100),
  54     m_showProgressBarTimer(0),
  55     m_messageTimeStamp()
  56 {
  57     connect(m_view, SIGNAL(urlChanged(KUrl)),
  58             this, SLOT(updateSpaceInfoContent(KUrl)));
  59
  60     // Initialize message label
  61     m_messageLabel = new KonqStatusBarMessageLabel(this);
  62
  63     // Initialize zoom widget
  64     m_zoomSlider = new QSlider(Qt::Horizontal, this);
  65     m_zoomSlider->setAccessibleName(i18n("Zoom slider"));
  66     m_zoomSlider->setPageStep(1);
  67
  68     const int min = ZoomLevelInfo::minimumLevel();
  69     const int max = ZoomLevelInfo::maximumLevel();
  70     m_zoomSlider->setRange(min, max);
  71     m_zoomSlider->setValue(view->zoomLevel());
  72     updateZoomSliderToolTip(view->zoomLevel());
  73
  74     connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
  75     connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
  76     connect(m_view, SIGNAL(zoomLevelChanged(int,int)), this, SLOT(slotZoomLevelChanged(int,int)));
  77
  78     // Initialize space information
  79     m_spaceInfo = new StatusBarSpaceInfo(this);
  80     m_spaceInfo->setUrl(m_view->url());
  81
  82     // Initialize progress information
  83     m_stopButton = new QToolButton(this);
  84     m_stopButton->setIcon(KIcon("process-stop"));
  85     m_stopButton->setAccessibleName(i18n("Stop"));
  86     // TODO: Add tooltip for KDE SC 4.7.0, if new strings are allowed again
  87     m_stopButton->setAutoRaise(true);
  88     m_stopButton->hide();
  89     connect(m_stopButton, SIGNAL(clicked()), this, SIGNAL(stopPressed()));
  90
  91     m_progressText = new QLabel(this);
  92     m_progressText->hide();
  93
  94     m_progressBar = new QProgressBar(this);
  95     m_progressBar->hide();
  96
  97     m_showProgressBarTimer = new QTimer(this);
  98     m_showProgressBarTimer->setInterval(1000);
  99     m_showProgressBarTimer->setSingleShot(true);
 100     connect(m_showProgressBarTimer, SIGNAL(timeout()), this, SLOT(updateProgressInfo()));
 101
 102     // Initialize top layout and size policies
 103     const int fontHeight = QFontMetrics(m_messageLabel->font()).height();
 104     const int zoomSliderHeight = m_zoomSlider->minimumSizeHint().height();
 105     const int contentHeight = qMax(fontHeight, zoomSliderHeight);
 106
 107     m_messageLabel->setMinimumTextHeight(contentHeight);
 108
 109     m_spaceInfo->setMaximumSize(200, contentHeight - 5);
 110     m_spaceInfo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
 111
 112     m_progressBar->setMaximumSize(200, contentHeight);
 113     m_zoomSlider->setMaximumSize(150, contentHeight);
 114     m_zoomSlider->setMinimumWidth(30);
 115
 116     QHBoxLayout* topLayout = new QHBoxLayout(this);
 117     topLayout->setMargin(0);
 118     topLayout->setSpacing(4);
 119     topLayout->addWidget(m_messageLabel);
 120     topLayout->addWidget(m_zoomSlider);
 121     topLayout->addWidget(m_spaceInfo);
 122     topLayout->addWidget(m_stopButton);
 123     topLayout->addWidget(m_progressText);
 124     topLayout->addWidget(m_progressBar);
 125
 126     setExtensionsVisible(true);
 127 }
 128
 129 DolphinStatusBar::~DolphinStatusBar()
 130 {
 131 }
 132
 133 void DolphinStatusBar::setMessage(const QString& msg,
 134                                   Type type)
 135 {
 136     int timeout = 1000; // Timeout in milliseconds until default
 137                         // messages may overwrite other messages.
 138
 139     QString message = msg;
 140     if (message.isEmpty()) {
 141         // Show the default text as fallback. An empty text indicates
 142         // a clearing of the information message.
 143         if (m_messageLabel->defaultText().isEmpty()) {
 144             return;
 145         }
 146         message = m_messageLabel->defaultText();
 147         type = Default;
 148         timeout = 0;
 149     }
 150
 151     KonqStatusBarMessageLabel::Type konqType = static_cast<KonqStatusBarMessageLabel::Type>(type);
 152     if ((message == m_messageLabel->text()) && (konqType == m_messageLabel->type())) {
 153         // the message is already shown
 154         return;
 155     }
 156
 157     const QTime currentTime = QTime::currentTime();
 158     const bool skipMessage = (type == Default) &&
 159                              m_messageTimeStamp.isValid() &&
 160                              (m_messageTimeStamp.msecsTo(currentTime) < timeout);
 161     if (skipMessage) {
 162         // A non-default message is shown just for a very short time. Don't hide
 163         // the message by a default message, so that the user gets the chance to
 164         // read the information.
 165         return;
 166     }
 167
 168     m_messageLabel->setMessage(message, konqType);
 169     if (type != Default) {
 170         m_messageTimeStamp = currentTime;
 171     }
 172 }
 173
 174 DolphinStatusBar::Type DolphinStatusBar::type() const
 175 {
 176     return static_cast<Type>(m_messageLabel->type());
 177 }
 178
 179 QString DolphinStatusBar::message() const
 180 {
 181     return m_messageLabel->text();
 182 }
 183
 184 void DolphinStatusBar::setProgressText(const QString& text)
 185 {
 186     m_progressText->setText(text);
 187 }
 188
 189 int DolphinStatusBar::progress() const
 190 {
 191     return m_progress;
 192 }
 193
 194 QString DolphinStatusBar::progressText() const
 195 {
 196     return m_progressText->text();
 197 }
 198
 199 void DolphinStatusBar::setProgress(int percent)
 200 {
 201     // Show a busy indicator if a value < 0 is provided:
 202     m_progressBar->setMaximum((percent < 0) ? 0 : 100);
 203
 204     if (percent < 0) {
 205         percent = 0;
 206     } else if (percent > 100) {
 207         percent = 100;
 208     }
 209
 210     const bool progressRestarted = (percent < 100) && (percent < m_progress);
 211     m_progress = percent;
 212     if (m_messageLabel->type() == KonqStatusBarMessageLabel::Error) {
 213         // Don't update any widget or status bar text if an
 214         // error message is shown
 215         return;
 216     }
 217
 218     if (progressRestarted && !m_progressBar->isVisible()) {
 219         // Show the progress bar delayed: In the case if 100 % are reached within
 220         // a short time, no progress bar will be shown at all.
 221         m_showProgressBarTimer->start();
 222     }
 223
 224     m_progressBar->setValue(m_progress);
 225     if (percent == 100) {
 226         // The end of the progress has been reached. Assure that the progress bar
 227         // gets hidden and the extensions widgets get visible again.
 228         m_showProgressBarTimer->stop();
 229         updateProgressInfo();
 230     }
 231
 232     const QString defaultText = m_messageLabel->defaultText();
 233     const QString msg(m_messageLabel->text());
 234     if ((percent == 0) && !msg.isEmpty()) {
 235         setMessage(QString(), Default);
 236     } else if ((percent == 100) && (msg != defaultText)) {
 237         setMessage(defaultText, Default);
 238     }
 239 }
 240
 241 void DolphinStatusBar::clear()
 242 {
 243     setMessage(m_messageLabel->defaultText(), Default);
 244 }
 245
 246 void DolphinStatusBar::setDefaultText(const QString& text)
 247 {
 248     m_messageLabel->setDefaultText(text);
 249 }
 250
 251 QString DolphinStatusBar::defaultText() const
 252 {
 253     return m_messageLabel->defaultText();
 254 }
 255
 256 void DolphinStatusBar::refresh()
 257 {
 258     setExtensionsVisible(true);
 259 }
 260
 261 void DolphinStatusBar::contextMenuEvent(QContextMenuEvent* event)
 262 {
 263     Q_UNUSED(event);
 264
 265     KMenu menu(this);
 266
 267     QAction* copyAction = 0;
 268     switch (type()) {
 269     case Default:
 270     case OperationCompleted:
 271     case Information:
 272         copyAction = menu.addAction(i18nc("@action:inmenu", "Copy Information Message"));
 273         break;
 274     case Error:
 275         copyAction = menu.addAction(i18nc("@action:inmenu", "Copy Error Message"));
 276         break;
 277     default: break;
 278     }
 279
 280     QAction* showZoomSliderAction = menu.addAction(i18nc("@action:inmenu", "Show Zoom Slider"));
 281     showZoomSliderAction->setCheckable(true);
 282     showZoomSliderAction->setChecked(GeneralSettings::showZoomSlider());
 283
 284     QAction* showSpaceInfoAction = menu.addAction(i18nc("@action:inmenu", "Show Space Information"));
 285     showSpaceInfoAction->setCheckable(true);
 286     showSpaceInfoAction->setChecked(GeneralSettings::showSpaceInfo());
 287
 288     const QAction* action = menu.exec(QCursor::pos());
 289     if (action == copyAction) {
 290         QMimeData* mimeData = new QMimeData();
 291         mimeData->setText(message());
 292         QApplication::clipboard()->setMimeData(mimeData);
 293     } else if (action == showZoomSliderAction) {
 294         const bool visible = showZoomSliderAction->isChecked();
 295         GeneralSettings::setShowZoomSlider(visible);
 296         m_zoomSlider->setVisible(visible);
 297     } else if (action == showSpaceInfoAction) {
 298         const bool visible = showSpaceInfoAction->isChecked();
 299         GeneralSettings::setShowSpaceInfo(visible);
 300         m_spaceInfo->setVisible(visible);
 301     }
 302 }
 303
 304 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 305 {
 306     m_spaceInfo->setUrl(url);
 307 }
 308
 309 void DolphinStatusBar::setZoomLevel(int zoomLevel)
 310 {
 311     m_view->setZoomLevel(zoomLevel);
 312     updateZoomSliderToolTip(zoomLevel);
 313 }
 314
 315 void DolphinStatusBar::showZoomSliderToolTip(int zoomLevel)
 316 {
 317     updateZoomSliderToolTip(zoomLevel);
 318
 319     QPoint global = m_zoomSlider->rect().topLeft();
 320     global.ry() += m_zoomSlider->height() / 2;
 321     QHelpEvent toolTipEvent(QEvent::ToolTip, QPoint(0, 0), m_zoomSlider->mapToGlobal(global));
 322     QApplication::sendEvent(m_zoomSlider, &toolTipEvent);
 323 }
 324
 325 void DolphinStatusBar::slotZoomLevelChanged(int current, int previous)
 326 {
 327     Q_UNUSED(previous);
 328     m_zoomSlider->setValue(current);
 329 }
 330
 331 void DolphinStatusBar::updateProgressInfo()
 332 {
 333     const bool isErrorShown = (m_messageLabel->type() == KonqStatusBarMessageLabel::Error);
 334     if (m_progress < 100) {
 335         // Show the progress information and hide the extensions
 336         setExtensionsVisible(false);
 337         if (!isErrorShown) {
 338             m_stopButton->show();
 339             m_progressText->show();
 340             m_progressBar->show();
 341         }
 342     } else {
 343         // Hide the progress information and show the extensions
 344         m_stopButton->hide();
 345         m_progressText->hide();
 346         m_progressBar->hide();
 347         setExtensionsVisible(true);
 348     }
 349 }
 350
 351 void DolphinStatusBar::setExtensionsVisible(bool visible)
 352 {
 353     bool showSpaceInfo = visible;
 354     bool showZoomSlider = visible;
 355     if (visible) {
 356         showSpaceInfo = GeneralSettings::showSpaceInfo();
 357         showZoomSlider = GeneralSettings::showZoomSlider();
 358     }
 359     m_spaceInfo->setVisible(showSpaceInfo);
 360     m_zoomSlider->setVisible(showZoomSlider);
 361 }
 362
 363 void DolphinStatusBar::updateZoomSliderToolTip(int zoomLevel)
 364 {
 365     const int size = ZoomLevelInfo::iconSizeForZoomLevel(zoomLevel);
 366     m_zoomSlider->setToolTip(i18ncp("@info:tooltip", "Size: 1 pixel", "Size: %1 pixels", size));
 367 }
 368
 369 #include "dolphinstatusbar.moc"