apps/dolphin/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 "settings/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 <QApplication>
  30 #include <QHBoxLayout>
  31 #include <QLabel>
  32 #include <QProgressBar>
  33 #include <QToolButton>
  34 #include <QTimer>
  35
  36 #include <kiconloader.h>
  37 #include <kicon.h>
  38 #include <klocale.h>
  39 #include <kvbox.h>
  40
  41 DolphinStatusBar::DolphinStatusBar(QWidget* parent, DolphinView* view) :
  42     KHBox(parent),
  43     m_view(view),
  44     m_messageLabel(0),
  45     m_spaceInfo(0),
  46     m_zoomWidget(0),
  47     m_zoomOut(0),
  48     m_zoomSlider(0),
  49     m_zoomIn(0),
  50     m_progressBar(0),
  51     m_progress(100)
  52 {
  53     setMargin(0);
  54     setSpacing(4);
  55
  56     connect(m_view, SIGNAL(urlChanged(const KUrl&)),
  57             this, SLOT(updateSpaceInfoContent(const KUrl&)));
  58
  59     // initialize message label
  60     m_messageLabel = new StatusBarMessageLabel(this);
  61     m_messageLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
  62
  63     // initialize zoom slider
  64     m_zoomWidget = new QWidget(this);
  65
  66     m_zoomOut = new QToolButton(m_zoomWidget);
  67     m_zoomOut->setIcon(KIcon("zoom-out"));
  68     m_zoomOut->setAutoRaise(true);
  69
  70     m_zoomSlider = new QSlider(Qt::Horizontal, m_zoomWidget);
  71     m_zoomSlider->setPageStep(1);
  72
  73     const int min = ZoomLevelInfo::minimumLevel();
  74     const int max = ZoomLevelInfo::maximumLevel();
  75     m_zoomSlider->setRange(min, max);
  76     m_zoomSlider->setValue(view->zoomLevel());
  77     updateZoomSliderToolTip(view->zoomLevel());
  78
  79     m_zoomIn = new QToolButton(m_zoomWidget);
  80     m_zoomIn->setIcon(KIcon("zoom-in"));
  81     m_zoomIn->setAutoRaise(true);
  82
  83     QHBoxLayout* zoomWidgetLayout = new QHBoxLayout(m_zoomWidget);
  84     zoomWidgetLayout->setSpacing(0);
  85     zoomWidgetLayout->setMargin(0);
  86     zoomWidgetLayout->addWidget(m_zoomOut);
  87     zoomWidgetLayout->addWidget(m_zoomSlider);
  88     zoomWidgetLayout->addWidget(m_zoomIn);
  89
  90     connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
  91     connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
  92     connect(m_view, SIGNAL(zoomLevelChanged(int)), m_zoomSlider, SLOT(setValue(int)));
  93     connect(m_zoomOut, SIGNAL(clicked()), this, SLOT(zoomOut()));
  94     connect(m_zoomIn, SIGNAL(clicked()), this, SLOT(zoomIn()));
  95
  96     // initialize space information
  97     m_spaceInfo = new StatusBarSpaceInfo(this);
  98     m_spaceInfo->setUrl(m_view->url());
  99
 100     // initialize progress information
 101     m_progressText = new QLabel(this);
 102     m_progressText->hide();
 103
 104     m_progressBar = new QProgressBar(this);
 105     m_progressBar->hide();
 106
 107     // initialize sizes
 108     const int fontHeight = QFontMetrics(m_messageLabel->font()).height();
 109     const int zoomWidgetHeight = m_zoomWidget->minimumSizeHint().height();
 110     const int contentHeight = (fontHeight < zoomWidgetHeight) ? zoomWidgetHeight : fontHeight;
 111
 112     m_messageLabel->setMinimumTextHeight(contentHeight);
 113     m_spaceInfo->setFixedHeight(contentHeight);
 114     m_progressBar->setFixedSize(200, contentHeight);
 115     m_zoomWidget->setFixedSize(150, contentHeight);
 116
 117     setExtensionsVisible(true);
 118 }
 119
 120 DolphinStatusBar::~DolphinStatusBar()
 121 {
 122 }
 123
 124 void DolphinStatusBar::setMessage(const QString& msg,
 125                                   Type type)
 126 {
 127     if ((msg == m_messageLabel->text()) && (type == m_messageLabel->type())) {
 128         return;
 129     }
 130
 131     m_messageLabel->setMessage(msg, type);
 132
 133     const int widthGap = m_messageLabel->widthGap();
 134     if (widthGap > 0) {
 135         m_progressBar->hide();
 136         m_progressText->hide();
 137     }
 138     assureVisibleText();
 139 }
 140
 141 DolphinStatusBar::Type DolphinStatusBar::type() const
 142 {
 143     return m_messageLabel->type();
 144 }
 145
 146 QString DolphinStatusBar::message() const
 147 {
 148     return m_messageLabel->text();
 149 }
 150
 151 void DolphinStatusBar::setProgressText(const QString& text)
 152 {
 153     m_progressText->setText(text);
 154 }
 155
 156 QString DolphinStatusBar::progressText() const
 157 {
 158     return m_progressText->text();
 159 }
 160
 161 void DolphinStatusBar::setProgress(int percent)
 162 {
 163     if (percent < 0) {
 164         percent = 0;
 165     } else if (percent > 100) {
 166         percent = 100;
 167     }
 168
 169     m_progress = percent;
 170     if (m_messageLabel->type() == Error) {
 171         // don't update any widget or status bar text if an
 172         // error message is shown
 173         return;
 174     }
 175
 176     m_progressBar->setValue(m_progress);
 177     if (!m_progressBar->isVisible() || (percent == 100)) {
 178         QTimer::singleShot(300, this, SLOT(updateProgressInfo()));
 179     }
 180
 181     const QString& defaultText = m_messageLabel->defaultText();
 182     const QString msg(m_messageLabel->text());
 183     if ((percent == 0) && !msg.isEmpty()) {
 184         setMessage(QString(), Default);
 185     } else if ((percent == 100) && (msg != defaultText)) {
 186         setMessage(defaultText, Default);
 187     }
 188 }
 189
 190 void DolphinStatusBar::clear()
 191 {
 192     setMessage(m_messageLabel->defaultText(), Default);
 193 }
 194
 195 void DolphinStatusBar::setDefaultText(const QString& text)
 196 {
 197     m_messageLabel->setDefaultText(text);
 198 }
 199
 200 const QString& DolphinStatusBar::defaultText() const
 201 {
 202     return m_messageLabel->defaultText();
 203 }
 204
 205 void DolphinStatusBar::refresh()
 206 {
 207     setExtensionsVisible(true);
 208     assureVisibleText();
 209 }
 210
 211 void DolphinStatusBar::resizeEvent(QResizeEvent* event)
 212 {
 213     QWidget::resizeEvent(event);
 214     QMetaObject::invokeMethod(this, "assureVisibleText", Qt::QueuedConnection);
 215 }
 216
 217 void DolphinStatusBar::updateProgressInfo()
 218 {
 219     const bool isErrorShown = (m_messageLabel->type() == Error);
 220     if (m_progress < 100) {
 221         // show the progress information and hide the extensions
 222         setExtensionsVisible(false);
 223         if (!isErrorShown) {
 224             m_progressText->show();
 225             m_progressBar->show();
 226         }
 227     } else {
 228         // hide the progress information and show the extensions
 229         m_progressText->hide();
 230         m_progressBar->hide();
 231         assureVisibleText();
 232     }
 233 }
 234
 235 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 236 {
 237     m_spaceInfo->setUrl(url);
 238     assureVisibleText();
 239 }
 240
 241 void DolphinStatusBar::setZoomLevel(int zoomLevel)
 242 {
 243     m_zoomOut->setEnabled(zoomLevel > m_zoomSlider->minimum());
 244     m_zoomIn->setEnabled(zoomLevel < m_zoomSlider->maximum());
 245     m_view->setZoomLevel(zoomLevel);
 246     updateZoomSliderToolTip(zoomLevel);
 247 }
 248
 249 void DolphinStatusBar::assureVisibleText()
 250 {
 251     const int widthGap = m_messageLabel->widthGap();
 252     if (m_spaceInfo->isVisible() || m_zoomWidget->isVisible()) {
 253         // At least the space information or the zoom slider is shown.
 254         // Hide them if the status bar text does not fit into the available width.
 255         if (widthGap > 0) {
 256             setExtensionsVisible(false);
 257         }
 258     } else if (!m_progressBar->isVisible()) {
 259         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 260         const int spaceInfoWidth  = settings->showSpaceInfo()  ? m_spaceInfo->minimumWidth()  : 0;
 261         const int zoomWidgetWidth = settings->showZoomSlider() ? m_zoomWidget->minimumWidth() : 0;
 262         const int widgetsWidth = spaceInfoWidth + zoomWidgetWidth;
 263
 264         if (widthGap + widgetsWidth <= 0) {
 265             setExtensionsVisible(true);
 266         }
 267     }
 268 }
 269
 270 void DolphinStatusBar::zoomOut()
 271 {
 272     const int value = m_zoomSlider->value();
 273     m_zoomSlider->setValue(value - 1);
 274 }
 275
 276 void DolphinStatusBar::zoomIn()
 277 {
 278     const int value = m_zoomSlider->value();
 279     m_zoomSlider->setValue(value + 1);
 280 }
 281
 282 void DolphinStatusBar::showZoomSliderToolTip(int zoomLevel)
 283 {
 284     updateZoomSliderToolTip(zoomLevel);
 285
 286     QPoint global = m_zoomSlider->rect().topLeft();
 287     global.ry() += m_zoomSlider->height() / 2;
 288     QHelpEvent toolTipEvent(QEvent::ToolTip, QPoint(0, 0), m_zoomSlider->mapToGlobal(global));
 289     QApplication::sendEvent(m_zoomSlider, &toolTipEvent);
 290 }
 291
 292 void DolphinStatusBar::setExtensionsVisible(bool visible)
 293 {
 294     bool spaceInfoVisible = visible;
 295     bool zoomSliderVisible = visible;
 296     if (visible) {
 297         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 298         spaceInfoVisible = settings->showSpaceInfo();
 299         zoomSliderVisible = settings->showZoomSlider();
 300     }
 301
 302     m_spaceInfo->setVisible(spaceInfoVisible);
 303     m_zoomWidget->setVisible(zoomSliderVisible);
 304 }
 305
 306 void DolphinStatusBar::updateZoomSliderToolTip(int zoomLevel)
 307 {
 308     const int size = ZoomLevelInfo::iconSizeForZoomLevel(zoomLevel);
 309     m_zoomSlider->setToolTip(i18ncp("@info:tooltip", "Size: 1 pixel", "Size: %1 pixels", size));
 310 }
 311
 312 #include "dolphinstatusbar.moc"