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