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     connect(m_view, SIGNAL(previewsShownChanged(bool)), this, SLOT(slotPreviewsShownChanged(bool)));
  78
  79     // Initialize space information
  80     m_spaceInfo = new StatusBarSpaceInfo(this);
  81     m_spaceInfo->setUrl(m_view->url());
  82
  83     // Initialize progress information
  84     m_stopButton = new QToolButton(this);
  85     m_stopButton->setIcon(KIcon("process-stop"));
  86     m_stopButton->setAccessibleName(i18n("Stop"));
  87     // TODO: Add tooltip for KDE SC 4.7.0, if new strings are allowed again
  88     m_stopButton->setAutoRaise(true);
  89     m_stopButton->hide();
  90     connect(m_stopButton, SIGNAL(clicked()), this, SIGNAL(stopPressed()));
  91
  92     m_progressText = new QLabel(this);
  93     m_progressText->hide();
  94
  95     m_progressBar = new QProgressBar(this);
  96     m_progressBar->hide();
  97
  98     m_showProgressBarTimer = new QTimer(this);
  99     m_showProgressBarTimer->setInterval(1000);
 100     m_showProgressBarTimer->setSingleShot(true);
 101     connect(m_showProgressBarTimer, SIGNAL(timeout()), this, SLOT(updateProgressInfo()));
 102
 103     // Initialize top layout and size policies
 104     const int fontHeight = QFontMetrics(m_messageLabel->font()).height();
 105     const int zoomSliderHeight = m_zoomSlider->minimumSizeHint().height();
 106     const int contentHeight = qMax(fontHeight, zoomSliderHeight);
 107
 108     m_messageLabel->setMinimumTextHeight(contentHeight);
 109
 110     m_spaceInfo->setMaximumSize(200, contentHeight - 5);
 111     m_spaceInfo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
 112
 113     m_progressBar->setMaximumSize(200, contentHeight);
 114     m_zoomSlider->setMaximumSize(150, contentHeight);
 115     m_zoomSlider->setMinimumWidth(30);
 116
 117     QHBoxLayout* topLayout = new QHBoxLayout(this);
 118     topLayout->setMargin(0);
 119     topLayout->setSpacing(4);
 120     topLayout->addWidget(m_messageLabel);
 121     topLayout->addWidget(m_zoomSlider);
 122     topLayout->addWidget(m_spaceInfo);
 123     topLayout->addWidget(m_stopButton);
 124     topLayout->addWidget(m_progressText);
 125     topLayout->addWidget(m_progressBar);
 126
 127     setExtensionsVisible(true);
 128 }
 129
 130 DolphinStatusBar::~DolphinStatusBar()
 131 {
 132 }
 133
 134 void DolphinStatusBar::setMessage(const QString& msg,
 135                                   Type type)
 136 {
 137     int timeout = 1000; // Timeout in milliseconds until default
 138                         // messages may overwrite other messages.
 139
 140     QString message = msg;
 141     if (message.isEmpty()) {
 142         // Show the default text as fallback. An empty text indicates
 143         // a clearing of the information message.
 144         if (m_messageLabel->defaultText().isEmpty()) {
 145             return;
 146         }
 147         message = m_messageLabel->defaultText();
 148         type = Default;
 149         timeout = 0;
 150     }
 151
 152     KonqStatusBarMessageLabel::Type konqType = static_cast<KonqStatusBarMessageLabel::Type>(type);
 153     if ((message == m_messageLabel->text()) && (konqType == m_messageLabel->type())) {
 154         // the message is already shown
 155         return;
 156     }
 157
 158     const QTime currentTime = QTime::currentTime();
 159     const bool skipMessage = (type == Default) &&
 160                              m_messageTimeStamp.isValid() &&
 161                              (m_messageTimeStamp.msecsTo(currentTime) < timeout);
 162     if (skipMessage) {
 163         // A non-default message is shown just for a very short time. Don't hide
 164         // the message by a default message, so that the user gets the chance to
 165         // read the information.
 166         return;
 167     }
 168
 169     m_messageLabel->setMessage(message, konqType);
 170     if (type != Default) {
 171         m_messageTimeStamp = currentTime;
 172     }
 173 }
 174
 175 DolphinStatusBar::Type DolphinStatusBar::type() const
 176 {
 177     return static_cast<Type>(m_messageLabel->type());
 178 }
 179
 180 QString DolphinStatusBar::message() const
 181 {
 182     return m_messageLabel->text();
 183 }
 184
 185 void DolphinStatusBar::setProgressText(const QString& text)
 186 {
 187     m_progressText->setText(text);
 188 }
 189
 190 int DolphinStatusBar::progress() const
 191 {
 192     return m_progress;
 193 }
 194
 195 QString DolphinStatusBar::progressText() const
 196 {
 197     return m_progressText->text();
 198 }
 199
 200 void DolphinStatusBar::setProgress(int percent)
 201 {
 202     // Show a busy indicator if a value < 0 is provided:
 203     m_progressBar->setMaximum((percent < 0) ? 0 : 100);
 204
 205     if (percent < 0) {
 206         percent = 0;
 207     } else if (percent > 100) {
 208         percent = 100;
 209     }
 210
 211     const bool progressRestarted = (percent < 100) && (percent < m_progress);
 212     m_progress = percent;
 213     if (m_messageLabel->type() == KonqStatusBarMessageLabel::Error) {
 214         // Don't update any widget or status bar text if an
 215         // error message is shown
 216         return;
 217     }
 218
 219     if (progressRestarted && !m_progressBar->isVisible()) {
 220         // Show the progress bar delayed: In the case if 100 % are reached within
 221         // a short time, no progress bar will be shown at all.
 222         m_showProgressBarTimer->start();
 223     }
 224
 225     m_progressBar->setValue(m_progress);
 226     if (percent == 100) {
 227         // The end of the progress has been reached. Assure that the progress bar
 228         // gets hidden and the extensions widgets get visible again.
 229         m_showProgressBarTimer->stop();
 230         updateProgressInfo();
 231     }
 232
 233     const QString defaultText = m_messageLabel->defaultText();
 234     const QString msg(m_messageLabel->text());
 235     if ((percent == 0) && !msg.isEmpty()) {
 236         setMessage(QString(), Default);
 237     } else if ((percent == 100) && (msg != defaultText)) {
 238         setMessage(defaultText, Default);
 239     }
 240 }
 241
 242 void DolphinStatusBar::clear()
 243 {
 244     setMessage(m_messageLabel->defaultText(), Default);
 245 }
 246
 247 void DolphinStatusBar::setDefaultText(const QString& text)
 248 {
 249     m_messageLabel->setDefaultText(text);
 250 }
 251
 252 QString DolphinStatusBar::defaultText() const
 253 {
 254     return m_messageLabel->defaultText();
 255 }
 256
 257 void DolphinStatusBar::refresh()
 258 {
 259     setExtensionsVisible(true);
 260 }
 261
 262 void DolphinStatusBar::contextMenuEvent(QContextMenuEvent* event)
 263 {
 264     Q_UNUSED(event);
 265
 266     KMenu menu(this);
 267
 268     QAction* copyAction = 0;
 269     switch (type()) {
 270     case Default:
 271     case OperationCompleted:
 272     case Information:
 273         copyAction = menu.addAction(i18nc("@action:inmenu", "Copy Information Message"));
 274         break;
 275     case Error:
 276         copyAction = menu.addAction(i18nc("@action:inmenu", "Copy Error Message"));
 277         break;
 278     default: break;
 279     }
 280
 281     QAction* showZoomSliderAction = menu.addAction(i18nc("@action:inmenu", "Show Zoom Slider"));
 282     showZoomSliderAction->setCheckable(true);
 283     showZoomSliderAction->setChecked(GeneralSettings::showZoomSlider());
 284
 285     QAction* showSpaceInfoAction = menu.addAction(i18nc("@action:inmenu", "Show Space Information"));
 286     showSpaceInfoAction->setCheckable(true);
 287     showSpaceInfoAction->setChecked(GeneralSettings::showSpaceInfo());
 288
 289     const QAction* action = menu.exec(QCursor::pos());
 290     if (action == copyAction) {
 291         QMimeData* mimeData = new QMimeData();
 292         mimeData->setText(message());
 293         QApplication::clipboard()->setMimeData(mimeData);
 294     } else if (action == showZoomSliderAction) {
 295         const bool visible = showZoomSliderAction->isChecked();
 296         GeneralSettings::setShowZoomSlider(visible);
 297         m_zoomSlider->setVisible(visible);
 298     } else if (action == showSpaceInfoAction) {
 299         const bool visible = showSpaceInfoAction->isChecked();
 300         GeneralSettings::setShowSpaceInfo(visible);
 301         m_spaceInfo->setVisible(visible);
 302     }
 303 }
 304
 305 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 306 {
 307     m_spaceInfo->setUrl(url);
 308 }
 309
 310 void DolphinStatusBar::setZoomLevel(int zoomLevel)
 311 {
 312     m_view->setZoomLevel(zoomLevel);
 313     updateZoomSliderToolTip(zoomLevel);
 314 }
 315
 316 void DolphinStatusBar::showZoomSliderToolTip(int zoomLevel)
 317 {
 318     updateZoomSliderToolTip(zoomLevel);
 319
 320     QPoint global = m_zoomSlider->rect().topLeft();
 321     global.ry() += m_zoomSlider->height() / 2;
 322     QHelpEvent toolTipEvent(QEvent::ToolTip, QPoint(0, 0), m_zoomSlider->mapToGlobal(global));
 323     QApplication::sendEvent(m_zoomSlider, &toolTipEvent);
 324 }
 325
 326 void DolphinStatusBar::slotZoomLevelChanged(int current, int previous)
 327 {
 328     Q_UNUSED(previous);
 329     m_zoomSlider->setValue(current);
 330 }
 331
 332 void DolphinStatusBar::slotPreviewsShownChanged(bool shown)
 333 {
 334     Q_UNUSED(shown);
 335     // The zoom level might be different with/without previews -> update the zoom slider.
 336     m_zoomSlider->setValue(m_view->zoomLevel());
 337 }
 338
 339 void DolphinStatusBar::updateProgressInfo()
 340 {
 341     const bool isErrorShown = (m_messageLabel->type() == KonqStatusBarMessageLabel::Error);
 342     if (m_progress < 100) {
 343         // Show the progress information and hide the extensions
 344         setExtensionsVisible(false);
 345         if (!isErrorShown) {
 346             m_stopButton->show();
 347             m_progressText->show();
 348             m_progressBar->show();
 349         }
 350     } else {
 351         // Hide the progress information and show the extensions
 352         m_stopButton->hide();
 353         m_progressText->hide();
 354         m_progressBar->hide();
 355         setExtensionsVisible(true);
 356     }
 357 }
 358
 359 void DolphinStatusBar::setExtensionsVisible(bool visible)
 360 {
 361     bool showSpaceInfo = visible;
 362     bool showZoomSlider = visible;
 363     if (visible) {
 364         showSpaceInfo = GeneralSettings::showSpaceInfo();
 365         showZoomSlider = GeneralSettings::showZoomSlider();
 366     }
 367     m_spaceInfo->setVisible(showSpaceInfo);
 368     m_zoomSlider->setVisible(showZoomSlider);
 369 }
 370
 371 void DolphinStatusBar::updateZoomSliderToolTip(int zoomLevel)
 372 {
 373     const int size = ZoomLevelInfo::iconSizeForZoomLevel(zoomLevel);
 374     m_zoomSlider->setToolTip(i18ncp("@info:tooltip", "Size: 1 pixel", "Size: %1 pixels", size));
 375 }
 376
 377 #include "dolphinstatusbar.moc"