move statusbar code into the directory "statusbar"

svn path=/trunk/KDE/kdebase/apps/; revision=1005704

1 files changed, 326 insertions, 0 deletions

diff --git a/src/statusbar/dolphinstatusbar.cpp b/src/statusbar/dolphinstatusbar.cpp
new file mode 100644
index 000000000..aaa302a15
--- /dev/null
+++ b/src/statusbar/dolphinstatusbar.cpp
@@ -0,0 +1,326 @@
+/***************************************************************************
+ *   Copyright (C) 2006 by Peter Penz                                      *
+ *   [email protected]                                                     *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "dolphinstatusbar.h"
+#include "settings/dolphinsettings.h"
+#include "dolphinview.h"
+#include "dolphin_generalsettings.h"
+#include "statusbarmessagelabel.h"
+#include "statusbarspaceinfo.h"
+#include "zoomlevelinfo.h"
+
+#include <QApplication>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QProgressBar>
+#include <QToolButton>
+#include <QTimer>
+
+#include <kiconloader.h>
+#include <kicon.h>
+#include <klocale.h>
+#include <kvbox.h>
+
+DolphinStatusBar::DolphinStatusBar(QWidget* parent, DolphinView* view) :
+    KHBox(parent),
+    m_view(view),
+    m_messageLabel(0),
+    m_spaceInfo(0),
+    m_zoomWidget(0),
+    m_zoomOut(0),
+    m_zoomSlider(0),
+    m_zoomIn(0),
+    m_progressBar(0),
+    m_progress(100)
+{
+    setMargin(0);
+    setSpacing(4);
+
+    connect(m_view, SIGNAL(urlChanged(const KUrl&)),
+            this, SLOT(updateSpaceInfoContent(const KUrl&)));
+
+    // initialize message label
+    m_messageLabel = new StatusBarMessageLabel(this);
+    m_messageLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+
+    // initialize zoom slider
+    m_zoomWidget = new QWidget(this);
+
+    m_zoomOut = new QToolButton(m_zoomWidget);
+    m_zoomOut->setIcon(KIcon("zoom-out"));
+    m_zoomOut->setAutoRaise(true);
+
+    m_zoomSlider = new QSlider(Qt::Horizontal, m_zoomWidget);
+    m_zoomSlider->setPageStep(1);
+
+    const int min = ZoomLevelInfo::minimumLevel();
+    const int max = ZoomLevelInfo::maximumLevel();
+    m_zoomSlider->setRange(min, max);
+    m_zoomSlider->setValue(view->zoomLevel());
+    updateZoomSliderToolTip(view->zoomLevel());
+
+    m_zoomIn = new QToolButton(m_zoomWidget);
+    m_zoomIn->setIcon(KIcon("zoom-in"));
+    m_zoomIn->setAutoRaise(true);
+
+    QHBoxLayout* zoomWidgetLayout = new QHBoxLayout(m_zoomWidget);
+    zoomWidgetLayout->setSpacing(0);
+    zoomWidgetLayout->setMargin(0);
+    zoomWidgetLayout->addWidget(m_zoomOut);
+    zoomWidgetLayout->addWidget(m_zoomSlider);
+    zoomWidgetLayout->addWidget(m_zoomIn);
+
+    connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
+    connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
+    connect(m_view, SIGNAL(zoomLevelChanged(int)), m_zoomSlider, SLOT(setValue(int)));
+    connect(m_zoomOut, SIGNAL(clicked()), this, SLOT(zoomOut()));
+    connect(m_zoomIn, SIGNAL(clicked()), this, SLOT(zoomIn()));
+
+    // initialize space information
+    m_spaceInfo = new StatusBarSpaceInfo(this);
+    m_spaceInfo->setUrl(m_view->url());
+
+    // initialize progress information
+    m_progressText = new QLabel(this);
+    m_progressText->hide();
+
+    m_progressBar = new QProgressBar(this);
+    m_progressBar->hide();
+
+    // initialize sizes
+    const int fontHeight = QFontMetrics(m_messageLabel->font()).height();
+    const int zoomWidgetHeight = m_zoomWidget->minimumSizeHint().height();
+    const int contentHeight = (fontHeight < zoomWidgetHeight) ? zoomWidgetHeight : fontHeight;
+
+    m_messageLabel->setMinimumTextHeight(contentHeight);
+    m_spaceInfo->setFixedHeight(contentHeight);
+    m_progressBar->setFixedSize(200, contentHeight);
+    m_zoomWidget->setFixedSize(150, contentHeight);
+
+    setExtensionsVisible(true);
+}
+
+DolphinStatusBar::~DolphinStatusBar()
+{
+}
+
+void DolphinStatusBar::setMessage(const QString& msg,
+                                  Type type)
+{
+    if (msg.isEmpty()) {
+        // show the default text as fallback
+        clear();
+        return;
+    }
+
+    if ((msg == m_messageLabel->text()) && (type == m_messageLabel->type())) {
+        // the message is already shown
+        return;
+    }
+
+    m_messageLabel->setMessage(msg, type);
+
+    const int widthGap = m_messageLabel->widthGap();
+    if (widthGap > 0) {
+        m_progressBar->hide();
+        m_progressText->hide();
+    }
+    assureVisibleText();
+}
+
+DolphinStatusBar::Type DolphinStatusBar::type() const
+{
+    return m_messageLabel->type();
+}
+
+QString DolphinStatusBar::message() const
+{
+    return m_messageLabel->text();
+}
+
+void DolphinStatusBar::setProgressText(const QString& text)
+{
+    m_progressText->setText(text);
+}
+
+QString DolphinStatusBar::progressText() const
+{
+    return m_progressText->text();
+}
+
+void DolphinStatusBar::setProgress(int percent)
+{
+    if (percent < 0) {
+        percent = 0;
+    } else if (percent > 100) {
+        percent = 100;
+    }
+
+    m_progress = percent;
+    if (m_messageLabel->type() == Error) {
+        // don't update any widget or status bar text if an
+        // error message is shown
+        return;
+    }
+
+    m_progressBar->setValue(m_progress);
+    if (!m_progressBar->isVisible() || (percent == 100)) {
+        QTimer::singleShot(300, this, SLOT(updateProgressInfo()));
+    }
+
+    const QString& defaultText = m_messageLabel->defaultText();
+    const QString msg(m_messageLabel->text());
+    if ((percent == 0) && !msg.isEmpty()) {
+        setMessage(QString(), Default);
+    } else if ((percent == 100) && (msg != defaultText)) {
+        setMessage(defaultText, Default);
+    }
+}
+
+void DolphinStatusBar::clear()
+{
+    setMessage(m_messageLabel->defaultText(), Default);
+}
+
+void DolphinStatusBar::setDefaultText(const QString& text)
+{
+    m_messageLabel->setDefaultText(text);
+}
+
+const QString& DolphinStatusBar::defaultText() const
+{
+    return m_messageLabel->defaultText();
+}
+
+void DolphinStatusBar::refresh()
+{
+    setExtensionsVisible(true);
+    assureVisibleText();
+}
+
+void DolphinStatusBar::resizeEvent(QResizeEvent* event)
+{
+    // It is important to hide the widgets before invoking
+    // QWidget::resizeEvent(), otherwise it is possible that
+    // the dock widgets are shrinked when having a small
+    // statusbar width (bug #202147).
+    m_zoomWidget->hide();
+    m_spaceInfo->hide();
+
+    QWidget::resizeEvent(event);
+    QMetaObject::invokeMethod(this, "assureVisibleText", Qt::QueuedConnection);
+}
+
+void DolphinStatusBar::updateProgressInfo()
+{
+    const bool isErrorShown = (m_messageLabel->type() == Error);
+    if (m_progress < 100) {
+        // show the progress information and hide the extensions
+        setExtensionsVisible(false);
+        if (!isErrorShown) {
+            m_progressText->show();
+            m_progressBar->show();
+        }
+    } else {
+        // hide the progress information and show the extensions
+        m_progressText->hide();
+        m_progressBar->hide();
+        assureVisibleText();
+    }
+}
+
+void DolphinStatusBar::updateSpaceInfoContent(const KUrl& url)
+{
+    m_spaceInfo->setUrl(url);
+    assureVisibleText();
+}
+
+void DolphinStatusBar::setZoomLevel(int zoomLevel)
+{
+    m_zoomOut->setEnabled(zoomLevel > m_zoomSlider->minimum());
+    m_zoomIn->setEnabled(zoomLevel < m_zoomSlider->maximum());
+    m_view->setZoomLevel(zoomLevel);
+    updateZoomSliderToolTip(zoomLevel);
+}
+
+void DolphinStatusBar::assureVisibleText()
+{
+    const int widthGap = m_messageLabel->widthGap();
+    if (m_spaceInfo->isVisible() || m_zoomWidget->isVisible()) {
+        // At least the space information or the zoom slider is shown.
+        // Hide them if the status bar text does not fit into the available width.
+        if (widthGap > 0) {
+            setExtensionsVisible(false);
+        }
+    } else if (!m_progressBar->isVisible()) {
+        const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
+        const int spaceInfoWidth  = settings->showSpaceInfo()  ? m_spaceInfo->minimumWidth()  : 0;
+        const int zoomWidgetWidth = settings->showZoomSlider() ? m_zoomWidget->minimumWidth() : 0;
+        const int widgetsWidth = spaceInfoWidth + zoomWidgetWidth;
+
+        if (widthGap + widgetsWidth <= 0) {
+            setExtensionsVisible(true);
+        }
+    }
+}
+
+void DolphinStatusBar::zoomOut()
+{
+    const int value = m_zoomSlider->value();
+    m_zoomSlider->setValue(value - 1);
+}
+
+void DolphinStatusBar::zoomIn()
+{
+    const int value = m_zoomSlider->value();
+    m_zoomSlider->setValue(value + 1);
+}
+
+void DolphinStatusBar::showZoomSliderToolTip(int zoomLevel)
+{
+    updateZoomSliderToolTip(zoomLevel);
+
+    QPoint global = m_zoomSlider->rect().topLeft();
+    global.ry() += m_zoomSlider->height() / 2;
+    QHelpEvent toolTipEvent(QEvent::ToolTip, QPoint(0, 0), m_zoomSlider->mapToGlobal(global));
+    QApplication::sendEvent(m_zoomSlider, &toolTipEvent);
+}
+
+void DolphinStatusBar::setExtensionsVisible(bool visible)
+{
+    bool spaceInfoVisible = visible;
+    bool zoomSliderVisible = visible;
+    if (visible) {
+        const GeneralSettings* settings = DolphinSettings::instance().generalSettings();
+        spaceInfoVisible = settings->showSpaceInfo();
+        zoomSliderVisible = settings->showZoomSlider();
+    }
+
+    m_spaceInfo->setVisible(spaceInfoVisible);
+    m_zoomWidget->setVisible(zoomSliderVisible);
+}
+
+void DolphinStatusBar::updateZoomSliderToolTip(int zoomLevel)
+{
+    const int size = ZoomLevelInfo::iconSizeForZoomLevel(zoomLevel);
+    m_zoomSlider->setToolTip(i18ncp("@info:tooltip", "Size: 1 pixel", "Size: %1 pixels", size));
+}
+
+#include "dolphinstatusbar.moc"