Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 219 insertions, 0 deletions

diff --git a/kcontrol/konq/previews.cpp b/kcontrol/konq/previews.cpp
new file mode 100644
index 000000000..20d9a4499
--- /dev/null
+++ b/kcontrol/konq/previews.cpp
@@ -0,0 +1,219 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 2002 David Faure <faure@kde.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2 as published by the Free Software Foundation.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+//
+// File previews configuration
+//
+
+#include <qcheckbox.h>
+#include <qlabel.h>
+#include <qlayout.h>
+#include <qwhatsthis.h>
+
+#include <dcopclient.h>
+
+#include <kapplication.h>
+#include <kconfig.h>
+#include <kdialog.h>
+#include <kglobal.h>
+#include <klistview.h>
+#include <klocale.h>
+#include <knuminput.h>
+#include <kprotocolinfo.h>
+
+#include "previews.h"
+
+//-----------------------------------------------------------------------------
+
+class PreviewCheckListItem : public QCheckListItem
+{
+  public:
+    PreviewCheckListItem( QListView *parent, const QString &text )
+      : QCheckListItem( parent, text, CheckBoxController )
+    {}
+
+    PreviewCheckListItem( QListViewItem *parent, const QString &text )
+      : QCheckListItem( parent, text, CheckBox )
+    {}
+
+  protected:
+    void stateChange( bool )
+    {
+        static_cast<KPreviewOptions *>( listView()->parent() )->changed();
+    }
+};
+
+KPreviewOptions::KPreviewOptions( QWidget *parent, const char */*name*/ )
+    : KCModule( parent, "kcmkonq" )
+{
+    QVBoxLayout *lay = new QVBoxLayout(this, 0, KDialog::spacingHint());
+
+    lay->addWidget( new QLabel( i18n("<p>Allow previews, \"Folder Icons Reflect Contents\", and "
+                                     "retrieval of meta-data on protocols:</p>"), this ) );
+
+    setQuickHelp( i18n("<h1>Preview Options</h1> Here you can modify the behavior "
+                "of Konqueror when it shows the files in a folder."
+                "<h2>The list of protocols:</h2> check the protocols over which "
+                "previews should be shown; uncheck those over which they should not. "
+                "For instance, you might want to show previews over SMB if the local "
+                "network is fast enough, but you might disable it for FTP if you often "
+                "visit very slow FTP sites with large images."
+                "<h2>Maximum File Size:</h2> select the maximum file size for which "
+                "previews should be generated. For instance, if set to 1 MB (the default), "
+                "no preview will be generated for files bigger than 1 MB, for speed reasons."));
+
+    // Listview containing checkboxes for all protocols that support listing
+    KListView *listView = new KListView( this, "listView" );
+    listView->addColumn( i18n( "Select Protocols" ) );
+    listView->setFullWidth( true );
+
+    QHBoxLayout *hbox = new QHBoxLayout( lay );
+    hbox->addWidget( listView );
+    hbox->addStretch();
+
+    PreviewCheckListItem *localItems = new PreviewCheckListItem( listView,
+        i18n( "Local Protocols" ) );
+    PreviewCheckListItem *inetItems = new PreviewCheckListItem( listView,
+        i18n( "Internet Protocols" ) );
+
+    QStringList protocolList = KProtocolInfo::protocols();
+    protocolList.sort();
+    QStringList::Iterator it = protocolList.begin();
+
+    KURL url;
+    url.setPath("/");
+
+    for ( ; it != protocolList.end() ; ++it )
+    {
+        url.setProtocol( *it );
+        if ( KProtocolInfo::supportsListing( url ) )
+        {
+            QCheckListItem *item;
+            if ( KProtocolInfo::protocolClass( *it ) == ":local" )
+                item = new PreviewCheckListItem( localItems, ( *it ) );
+            else
+                item = new PreviewCheckListItem( inetItems, ( *it ) );
+
+            m_items.append( item );
+        }
+    }
+
+    listView->setOpen( localItems, true );
+    listView->setOpen( inetItems, true );
+
+    QWhatsThis::add( listView,
+                     i18n("This option makes it possible to choose when the file previews, "
+                          "smart folder icons, and meta-data in the File Manager should be activated.\n"
+                          "In the list of protocols that appear, select which ones are fast "
+                          "enough for you to allow previews to be generated.") );
+
+    QLabel *label = new QLabel( i18n( "&Maximum file size:" ), this );
+    lay->addWidget( label );
+
+    m_maxSize = new KDoubleNumInput( this );
+    m_maxSize->setSuffix( i18n(" MB") );
+    m_maxSize->setRange( 0.02, 10, 0.02, true );
+    m_maxSize->setPrecision( 1 );
+    label->setBuddy( m_maxSize );
+    lay->addWidget( m_maxSize );
+    connect( m_maxSize, SIGNAL( valueChanged(double) ), SLOT( changed() ) );
+
+    m_boostSize = new QCheckBox(i18n("&Increase size of previews relative to icons"), this);
+    connect( m_boostSize, SIGNAL( toggled(bool) ), SLOT( changed() ) );
+    lay->addWidget(m_boostSize);
+
+    m_useFileThumbnails = new QCheckBox(i18n("&Use thumbnails embedded in files"), this);
+    connect( m_useFileThumbnails, SIGNAL( toggled(bool) ), SLOT( changed() ) );
+
+    lay->addWidget(m_useFileThumbnails);
+
+    QWhatsThis::add( m_useFileThumbnails,
+                i18n("Select this to use thumbnails that are found inside some "
+                "file types (e.g. JPEG). This will increase speed and reduce "
+                "disk usage. Deselect it if you have files that have been processed "
+                "by programs which create inaccurate thumbnails, such as ImageMagick.") );
+
+    lay->addWidget( new QWidget(this), 10 );
+
+    load();
+}
+
+// Default: 1 MB
+#define DEFAULT_MAXSIZE (1024*1024)
+
+void KPreviewOptions::load(bool useDefaults)
+{
+    // *** load and apply to GUI ***
+    KGlobal::config()->setReadDefaults(useDefaults);
+    KConfigGroup group( KGlobal::config(), "PreviewSettings" );
+    QPtrListIterator<QCheckListItem> it( m_items );
+
+    for ( ; it.current() ; ++it ) {
+        QString protocol( it.current()->text() );
+        if ( ( protocol == "file" ) && ( !group.hasKey ( protocol ) ) )
+          // file should be enabled in case is not defined because if not so
+          // than preview's lost when size is changed from default one
+          it.current()->setOn( true );
+        else
+          it.current()->setOn( group.readBoolEntry( protocol, false ) );
+    }
+    // config key is in bytes (default value 1MB), numinput is in MB
+    m_maxSize->setValue( ((double)group.readNumEntry( "MaximumSize", DEFAULT_MAXSIZE )) / (1024*1024) );
+
+    m_boostSize->setChecked( group.readBoolEntry( "BoostSize", false /*default*/ ) );
+    m_useFileThumbnails->setChecked( group.readBoolEntry( "UseFileThumbnails", true /*default*/ ) );
+    KGlobal::config()->setReadDefaults(false);
+}
+
+void KPreviewOptions::load()
+{
+    load(false);
+}
+
+void KPreviewOptions::defaults()
+{
+    load(true);
+}
+
+void KPreviewOptions::save()
+{
+    KConfigGroup group( KGlobal::config(), "PreviewSettings" );
+    QPtrListIterator<QCheckListItem> it( m_items );
+    for ( ; it.current() ; ++it ) {
+        QString protocol( it.current()->text() );
+        group.writeEntry( protocol, it.current()->isOn(), true, true );
+    }
+    // config key is in bytes, numinput is in MB
+    group.writeEntry( "MaximumSize", qRound( m_maxSize->value() *1024*1024 ), true, true );
+    group.writeEntry( "BoostSize", m_boostSize->isChecked(), true, true );
+    group.writeEntry( "UseFileThumbnails", m_useFileThumbnails->isChecked(), true, true );
+    group.sync();
+
+    // Send signal to konqueror
+    // Warning. In case something is added/changed here, keep kfmclient in sync
+    QByteArray data;
+    if ( !kapp->dcopClient()->isAttached() )
+      kapp->dcopClient()->attach();
+    kapp->dcopClient()->send( "konqueror*", "KonquerorIface", "reparseConfiguration()", data );
+}
+
+void KPreviewOptions::changed()
+{
+    emit KCModule::changed(true);
+}
+
+#include "previews.moc"