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 <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 space information
  64     m_spaceInfo = new StatusBarSpaceInfo(this);
  65     m_spaceInfo->setUrl(m_view->url());
  66
  67     // initialize zoom slider
  68     m_zoomWidget = new QWidget(this);
  69
  70     m_zoomOut = new QToolButton(m_zoomWidget);
  71     m_zoomOut->setIcon(KIcon("zoom-out"));
  72     m_zoomOut->setAutoRaise(true);
  73
  74     m_zoomSlider = new QSlider(Qt::Horizontal, m_zoomWidget);
  75     m_zoomSlider->setPageStep(1);
  76
  77     const int min = ZoomLevelInfo::minimumLevel();
  78     const int max = ZoomLevelInfo::maximumLevel();
  79     m_zoomSlider->setRange(min, max);
  80     m_zoomSlider->setValue(view->zoomLevel());
  81
  82     m_zoomIn = new QToolButton(m_zoomWidget);
  83     m_zoomIn->setIcon(KIcon("zoom-in"));
  84     m_zoomIn->setAutoRaise(true);
  85
  86     QHBoxLayout* zoomWidgetLayout = new QHBoxLayout(m_zoomWidget);
  87     zoomWidgetLayout->setSpacing(0);
  88     zoomWidgetLayout->setMargin(0);
  89     zoomWidgetLayout->addWidget(m_zoomOut);
  90     zoomWidgetLayout->addWidget(m_zoomSlider);
  91     zoomWidgetLayout->addWidget(m_zoomIn);
  92
  93     connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
  94     connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
  95     connect(m_view, SIGNAL(zoomLevelChanged(int)), m_zoomSlider, SLOT(setValue(int)));
  96     connect(m_zoomOut, SIGNAL(clicked()), this, SLOT(zoomOut()));
  97     connect(m_zoomIn, SIGNAL(clicked()), this, SLOT(zoomIn()));
  98
  99     // initialize progress information
 100     m_progressText = new QLabel(this);
 101     m_progressText->hide();
 102
 103     m_progressBar = new QProgressBar(this);
 104     m_progressBar->hide();
 105
 106     // initialize sizes
 107     const int contentHeight = QFontMetrics(m_messageLabel->font()).height() + 4;
 108     const int barHeight = contentHeight + 4;
 109
 110     setMinimumHeight(barHeight);
 111     m_messageLabel->setMinimumTextHeight(barHeight);
 112     m_spaceInfo->setFixedHeight(contentHeight);
 113     m_progressBar->setFixedSize(200, contentHeight);
 114     m_zoomWidget->setFixedSize(150, contentHeight);
 115
 116     setExtensionsVisible(true);
 117 }
 118
 119 DolphinStatusBar::~DolphinStatusBar()
 120 {
 121 }
 122
 123 void DolphinStatusBar::setMessage(const QString& msg,
 124                                   Type type)
 125 {
 126     if ((msg == m_messageLabel->text()) && (type == m_messageLabel->type())) {
 127         return;
 128     }
 129
 130     m_messageLabel->setMessage(msg, type);
 131
 132     const int widthGap = m_messageLabel->widthGap();
 133     if (widthGap > 0) {
 134         m_progressBar->hide();
 135         m_progressText->hide();
 136     }
 137     assureVisibleText();
 138 }
 139
 140 DolphinStatusBar::Type DolphinStatusBar::type() const
 141 {
 142     return m_messageLabel->type();
 143 }
 144
 145 QString DolphinStatusBar::message() const
 146 {
 147     return m_messageLabel->text();
 148 }
 149
 150 void DolphinStatusBar::setProgressText(const QString& text)
 151 {
 152     m_progressText->setText(text);
 153 }
 154
 155 QString DolphinStatusBar::progressText() const
 156 {
 157     return m_progressText->text();
 158 }
 159
 160 void DolphinStatusBar::setProgress(int percent)
 161 {
 162     if (percent < 0) {
 163         percent = 0;
 164     } else if (percent > 100) {
 165         percent = 100;
 166     }
 167
 168     m_progress = percent;
 169     if (m_messageLabel->type() == Error) {
 170         // don't update any widget or status bar text if an
 171         // error message is shown
 172         return;
 173     }
 174
 175     m_progressBar->setValue(m_progress);
 176     if (!m_progressBar->isVisible() || (percent == 100)) {
 177         QTimer::singleShot(300, this, SLOT(updateProgressInfo()));
 178     }
 179
 180     const QString& defaultText = m_messageLabel->defaultText();
 181     const QString msg(m_messageLabel->text());
 182     if ((percent == 0) && !msg.isEmpty()) {
 183         setMessage(QString(), Default);
 184     } else if ((percent == 100) && (msg != defaultText)) {
 185         setMessage(defaultText, Default);
 186     }
 187 }
 188
 189 void DolphinStatusBar::clear()
 190 {
 191     setMessage(m_messageLabel->defaultText(), Default);
 192 }
 193
 194 void DolphinStatusBar::setDefaultText(const QString& text)
 195 {
 196     m_messageLabel->setDefaultText(text);
 197 }
 198
 199 const QString& DolphinStatusBar::defaultText() const
 200 {
 201     return m_messageLabel->defaultText();
 202 }
 203
 204 void DolphinStatusBar::refresh()
 205 {
 206     setExtensionsVisible(true);
 207     assureVisibleText();
 208 }
 209
 210 void DolphinStatusBar::resizeEvent(QResizeEvent* event)
 211 {
 212     QWidget::resizeEvent(event);
 213     QMetaObject::invokeMethod(this, "assureVisibleText", Qt::QueuedConnection);
 214 }
 215
 216 void DolphinStatusBar::updateProgressInfo()
 217 {
 218     const bool isErrorShown = (m_messageLabel->type() == Error);
 219     if (m_progress < 100) {
 220         // show the progress information and hide the extensions
 221         setExtensionsVisible(false);
 222         if (!isErrorShown) {
 223             m_progressText->show();
 224             m_progressBar->show();
 225         }
 226     } else {
 227         // hide the progress information and show the extensions
 228         m_progressText->hide();
 229         m_progressBar->hide();
 230         assureVisibleText();
 231     }
 232 }
 233
 234 void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
 235 {
 236     m_spaceInfo->setUrl(url);
 237     assureVisibleText();
 238 }
 239
 240 void DolphinStatusBar::setZoomLevel(int zoomLevel)
 241 {
 242     m_zoomOut->setEnabled(zoomLevel > m_zoomSlider->minimum());
 243     m_zoomIn->setEnabled(zoomLevel < m_zoomSlider->maximum());
 244     m_view->setZoomLevel(zoomLevel);
 245 }
 246
 247 void DolphinStatusBar::assureVisibleText()
 248 {
 249     const int widthGap = m_messageLabel->widthGap();
 250     if (m_spaceInfo->isVisible() || m_zoomWidget->isVisible()) {
 251         // At least the space information or the zoom slider is shown.
 252         // Hide them if the status bar text does not fit into the available width.
 253         if (widthGap > 0) {
 254             setExtensionsVisible(false);
 255         }
 256     } else if (!m_progressBar->isVisible()) {
 257         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 258         const int spaceInfoWidth  = settings->showSpaceInfo()  ? m_spaceInfo->minimumWidth()  : 0;
 259         const int zoomWidgetWidth = settings->showZoomSlider() ? m_zoomWidget->minimumWidth() : 0;
 260         const int widgetsWidth = spaceInfoWidth + zoomWidgetWidth;
 261
 262         if (widthGap + widgetsWidth <= 0) {
 263             setExtensionsVisible(true);
 264         }
 265     }
 266 }
 267
 268 void DolphinStatusBar::zoomOut()
 269 {
 270     const int value = m_zoomSlider->value();
 271     m_zoomSlider->setValue(value - 1);
 272 }
 273
 274 void DolphinStatusBar::zoomIn()
 275 {
 276     const int value = m_zoomSlider->value();
 277     m_zoomSlider->setValue(value + 1);
 278 }
 279
 280 void DolphinStatusBar::showZoomSliderToolTip(int zoomLevel)
 281 {
 282     const int size = ZoomLevelInfo::iconSizeForZoomLevel(zoomLevel);
 283     m_zoomSlider->setToolTip(i18nc("@info:tooltip", "Size: %1 pixels", size));
 284     QPoint global = m_zoomSlider->rect().topLeft();
 285     global.ry() += m_zoomSlider->height() / 2;
 286     QHelpEvent toolTipEvent(QEvent::ToolTip, QPoint(0, 0), m_zoomSlider->mapToGlobal(global));
 287     QApplication::sendEvent(m_zoomSlider, &toolTipEvent);
 288 }
 289
 290 void DolphinStatusBar::setExtensionsVisible(bool visible)
 291 {
 292     bool spaceInfoVisible = visible;
 293     bool zoomSliderVisible = visible;
 294     if (visible) {
 295         const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 296         spaceInfoVisible = settings->showSpaceInfo();
 297         zoomSliderVisible = settings->showZoomSlider();
 298     }
 299
 300     m_spaceInfo->setVisible(spaceInfoVisible);
 301     m_zoomWidget->setVisible(zoomSliderVisible);
 302 }
 303
 304 #include "dolphinstatusbar.moc"