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417 lines
14 KiB
417 lines
14 KiB
/*
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* This file is part of the KDE libraries
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* Copyright (c) 2001 Michael Goffioul <tdeprint@swing.be>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include "kpfilterpage.h"
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#include "kmfactory.h"
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#include "kxmlcommand.h"
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#include <tqtoolbutton.h>
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#include <tqheader.h>
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#include <tqtooltip.h>
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#include <tqlayout.h>
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#include <tqwhatsthis.h>
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#include <klistview.h>
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#include <klocale.h>
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#include <kiconloader.h>
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#include <kmessagebox.h>
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#include <kactivelabel.h>
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#include <kdebug.h>
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#include <kapplication.h>
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#include <kdialog.h>
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KPFilterPage::KPFilterPage(TQWidget *parent, const char *name)
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: KPrintDialogPage(parent,name)
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{
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//WhatsThis strings.... (added by pfeifle@kde.org)
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TQString whatsThisAddFilterButton = i18n( " <qt> <b>Add Filter button</b>"
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" <p>This button calls a little dialog to let you"
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" select a filter here. </p>"
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" <p><b>Note 1:</b> You can chain different filters as long as you make "
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" sure that the output of one fits as input of the next. (KDEPrint "
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" checks your filtering chain and will warn you if you fail to do so.</p> "
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" <p><b>Note 2:</b> The filters you define here are applied to your jobfile "
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" <em><b>before</b></em> it is handed downstream to your spooler and print "
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" subsystem (e.g. CUPS, LPRng, LPD).</p>"
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" </ul>"
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" </qt>" );
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TQString whatsThisRemoveFilterButton = i18n(" <qt> <b>Remove Filter button</b>"
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" <p>This button removes the highlighted filter from the"
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" list of filters."
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" </qt>" );
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TQString whatsThisMoveFilterUpButton = i18n(" <qt> <b>Move Filter Up button</b>"
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" <p>This button moves the highlighted filter up in the list"
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" of filters, towards the front of the filtering chain. </p>"
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" </qt>" );
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TQString whatsThisMoveFilterDownButton = i18n(" <qt> <b>Move Filter Down button</b>"
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" <p>This button moves the highlighted filter down in the list"
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" of filters, towards the end of the filtering chain..</p>"
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" </qt>" );
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TQString whatsThisConfigureFilterButton = i18n( " <qt> <b>Configure Filter button</b>"
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" <p>This button lets you configure the currently highlighted filter."
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" It opens a separate dialog. "
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" </p>"
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" </qt>" );
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TQString whatsThisFilterInfoPane = i18n( " <qt> <b>Filter Info Pane</b>"
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" <p>This field shows some general info about the selected filter. "
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" Amongst them are: "
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" <ul> "
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" <li>the <em>filter name</em> (as displayed in the KDEPrint user interface); </li> "
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" <li>the <em>filter requirements</em> (that is the external program that needs "
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" to present and executable on this system); </li> "
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" <li>the <em>filter input format</em> (in the form of one or several <em>MIME types</em>"
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" accepted by the filter); </li> "
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" <li>the <em>filter output format</em> (in the form of a <em>MIME type</em> "
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" generated by the filter); </li> "
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" <li>a more or less verbose text describing the filter's operation.</li> "
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" </ul> "
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" </p>"
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" </qt>" );
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TQString whatsThisFilterchainListView = i18n( " <qt> <b>Filtering Chain</b> (if enabled, is run <em>before</em> actual "
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" job submission to print system)"
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" <p>This field shows which filters are currently selected to act as 'pre-filters' "
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" for KDEPrint. Pre-filters are processing the print files <em>before</em> they are "
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" send downstream to your real print subsystem. </p> "
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" <p>The list shown in this field may be empty (default). </p> "
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" <p>The pre-filters act on the printjob in the order they are listed (from top to bottom). "
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" This is done by acting as a <em>filtering chain</em> where the output of one filter "
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" acts as input to the next. By putting the filters into the wrong order, you can make "
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" the filtering chain fail. For example: if your file is ASCII text, and you want the "
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" output being processed by the 'Multipage per Sheet' filter, the first filter must be "
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" one that processes ASCII into PostScript. </p> "
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" <p>KDEPrint can utilize <em>any</em> external filtering program which you may find useful "
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" through this interface. </p> "
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" <p>KDEPrint ships preconfigured with support for a selection of common filters. These "
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" filters however need to be "
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" installed independently from KDEPrint. These pre-filters work <em>for all</em> print subsystems"
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" supported by KDEPrint (such as CUPS, LPRng and LPD), because they are not depending on these.</p> "
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".<p> Amongst the pre-configured filters shipping with KDEPrint are: </p> "
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" <ul> "
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" <li>the <em>Enscript text filter</em> </li> "
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" <li>a <em>Multiple Pages per Sheet filter</em </li> "
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" <li>a <em>PostScript to PDF converter</em>.</li> "
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" <li>a <em>Page Selection/Ordering filter</em>.</li> "
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" <li>a <em>Poster Printing filter</em>.</li> "
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" <li>and some more..</li> "
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" </ul> "
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" To insert a filter into this list, simply click on the <em>funnel</em> icon (topmost on "
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" the right icon column group) and proceed. </p>"
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" <p>Please click on the other elements of this dialog to learn more about the KDEPrint "
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" pre-filters. "
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" </p>"
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" </qt>" );
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setTitle(i18n("Filters"));
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m_activefilters.setAutoDelete(true);
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m_valid = true;
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m_view = new KListView(this);
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TQWhatsThis::add(m_view, whatsThisFilterchainListView);
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m_view->addColumn("");
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m_view->setFrameStyle(TQFrame::WinPanel|TQFrame::Sunken);
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m_view->setLineWidth(1);
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m_view->setSorting(-1);
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m_view->header()->hide();
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connect(m_view,TQT_SIGNAL(selectionChanged(TQListViewItem*)),TQT_SLOT(slotItemSelected(TQListViewItem*)));
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m_add = new TQToolButton(this);
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TQWhatsThis::add(m_add, whatsThisAddFilterButton);
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m_add->setIconSet(BarIconSet("filter"));
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TQToolTip::add(m_add, i18n("Add filter"));
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m_remove = new TQToolButton(this);
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TQWhatsThis::add(m_remove, whatsThisRemoveFilterButton);
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m_remove->setIconSet(BarIconSet("remove"));
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TQToolTip::add(m_remove, i18n("Remove filter"));
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m_up = new TQToolButton(this);
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TQWhatsThis::add(m_up, whatsThisMoveFilterUpButton);
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m_up->setIconSet(BarIconSet("up"));
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TQToolTip::add(m_up, i18n("Move filter up"));
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m_down = new TQToolButton(this);
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TQWhatsThis::add(m_down, whatsThisMoveFilterDownButton);
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m_down->setIconSet(BarIconSet("down"));
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TQToolTip::add(m_down, i18n("Move filter down"));
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m_configure = new TQToolButton(this);
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TQWhatsThis::add(m_configure, whatsThisConfigureFilterButton);
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m_configure->setIconSet(BarIconSet("configure"));
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TQToolTip::add(m_configure, i18n("Configure filter"));
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connect(m_add,TQT_SIGNAL(clicked()),TQT_SLOT(slotAddClicked()));
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connect(m_remove,TQT_SIGNAL(clicked()),TQT_SLOT(slotRemoveClicked()));
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connect(m_up,TQT_SIGNAL(clicked()),TQT_SLOT(slotUpClicked()));
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connect(m_down,TQT_SIGNAL(clicked()),TQT_SLOT(slotDownClicked()));
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connect(m_configure,TQT_SIGNAL(clicked()),TQT_SLOT(slotConfigureClicked()));
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connect(m_view,TQT_SIGNAL(doubleClicked(TQListViewItem*)),TQT_SLOT(slotConfigureClicked()));
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m_info = new KActiveLabel(this);
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TQWhatsThis::add(m_info, whatsThisFilterInfoPane);
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m_info->setVScrollBarMode( TQScrollView::Auto );
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m_info->setHScrollBarMode( TQScrollView::Auto );
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m_info->setFrameStyle( TQFrame::Panel|TQFrame::Sunken );
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m_info->setMinimumSize( TQSize( 240, 100 ) );
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TQGridLayout *l1 = new TQGridLayout(this, 2, 2, 0, KDialog::spacingHint());
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l1->setColStretch(0, 1);
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TQVBoxLayout *l2 = new TQVBoxLayout(0, 0, 1);
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l1->addWidget(m_view, 0, 0);
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l1->addLayout(l2, 0, 1);
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l2->addWidget(m_add);
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l2->addWidget(m_remove);
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l2->addSpacing(5);
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l2->addWidget(m_up);
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l2->addWidget(m_down);
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l2->addSpacing(5);
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l2->addWidget(m_configure);
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l2->addStretch(1);
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l1->addMultiCellWidget(m_info, 1, 1, 0, 1);
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slotItemSelected(0);
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resize(100,50);
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}
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KPFilterPage::~KPFilterPage()
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{
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}
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void KPFilterPage::updateButton()
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{
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/* TQListViewItem *item = m_view->currentItem();
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bool state=(item!=0);
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m_remove->setEnabled(state);
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m_up->setEnabled((state && item->itemAbove() != 0));
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m_down->setEnabled((state && item->itemBelow() != 0));
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m_configure->setEnabled(state);*/
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}
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void KPFilterPage::slotAddClicked()
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{
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bool ok;
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TQString choice = KXmlCommandManager::self()->selectCommand( this );
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ok = !choice.isEmpty();
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if (ok)
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{
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KXmlCommand *cmd = KXmlCommandManager::self()->loadCommand(choice);
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if (!cmd) return; // Error
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TQStringList filters = activeList();
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int pos = KXmlCommandManager::self()->insertCommand(filters, cmd->name());
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TQListViewItem *prev(0);
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if (pos > 0)
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{
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prev = m_view->firstChild();
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for (int i=1;prev && i<pos;i++)
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prev = prev->nextSibling();
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}
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m_activefilters.insert(cmd->name(), cmd);
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TQListViewItem *item = new TQListViewItem(m_view, prev, cmd->description(), cmd->name());
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item->setPixmap(0, SmallIcon("filter"));
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checkFilterChain();
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}
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}
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void KPFilterPage::slotRemoveClicked()
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{
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if (m_view->selectedItem())
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{
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TQString idname = m_view->selectedItem()->text(1);
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delete m_view->selectedItem();
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m_activefilters.remove(idname);
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checkFilterChain();
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if (m_view->currentItem())
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m_view->setSelected(m_view->currentItem(), true);
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slotItemSelected(m_view->currentItem());
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}
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}
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void KPFilterPage::slotUpClicked()
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{
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TQListViewItem *item = m_view->selectedItem();
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if (item && item->itemAbove())
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{
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TQListViewItem *clone = new TQListViewItem(m_view,item->itemAbove()->itemAbove(),item->text(0),item->text(1));
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clone->setPixmap(0, SmallIcon("filter"));
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delete item;
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m_view->setSelected(clone, true);
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checkFilterChain();
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}
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}
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void KPFilterPage::slotDownClicked()
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{
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TQListViewItem *item = m_view->selectedItem();
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if (item && item->itemBelow())
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{
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TQListViewItem *clone = new TQListViewItem(m_view,item->itemBelow(),item->text(0),item->text(1));
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clone->setPixmap(0, SmallIcon("filter"));
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delete item;
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m_view->setSelected(clone, true);
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checkFilterChain();
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}
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}
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void KPFilterPage::slotConfigureClicked()
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{
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KXmlCommand *filter = currentFilter();
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if (!filter || !KXmlCommandManager::self()->configure(filter, this))
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KMessageBox::error(this,i18n("Internal error: unable to load filter."));
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}
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void KPFilterPage::slotItemSelected(TQListViewItem *item)
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{
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m_remove->setEnabled((item != 0));
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m_up->setEnabled((item != 0 && item->itemAbove() != 0));
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m_down->setEnabled((item != 0 && item->itemBelow() != 0));
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m_configure->setEnabled((item != 0));
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updateInfo();
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}
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void KPFilterPage::setOptions(const TQMap<TQString,TQString>& opts)
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{
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TQStringList filters = TQStringList::split(',',opts["_kde-filters"],false);
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// remove unneeded filters
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TQDictIterator<KXmlCommand> dit(m_activefilters);
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for (;dit.current();)
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{
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if (filters.find(dit.currentKey()) == filters.end())
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m_activefilters.remove(dit.currentKey());
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else
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{
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dit.current()->setOptions(opts);
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++dit;
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}
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}
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// add needed filters
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m_view->clear();
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TQListViewItem *item(0);
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for (TQStringList::ConstIterator sit=filters.begin(); sit!=filters.end(); ++sit)
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{
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KXmlCommand *f(0);
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if ((f=m_activefilters.find(*sit)) == 0)
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{
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f = KXmlCommandManager::self()->loadCommand(*sit);
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if (f)
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{
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m_activefilters.insert(*sit,f);
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f->setOptions(opts);
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}
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}
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if (f)
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item = new TQListViewItem(m_view,item,f->description(),f->name());
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}
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checkFilterChain();
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}
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void KPFilterPage::getOptions(TQMap<TQString,TQString>& opts, bool incldef)
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{
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TQStringList filters = activeList();
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for (TQStringList::ConstIterator it=filters.begin(); it!=filters.end(); ++it)
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{
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KXmlCommand *f = m_activefilters.find(*it);
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if (f)
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f->getOptions(opts, incldef);
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}
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if (filters.count() > 0 || incldef)
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{
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opts["_kde-filters"] = filters.join(",");
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}
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}
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TQStringList KPFilterPage::activeList()
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{
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TQStringList list;
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TQListViewItem *item = m_view->firstChild();
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while (item)
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{
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list.append(item->text(1));
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item = item->nextSibling();
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}
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return list;
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}
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KXmlCommand* KPFilterPage::currentFilter()
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{
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KXmlCommand *filter(0);
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if (m_view->selectedItem())
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filter = m_activefilters.find(m_view->selectedItem()->text(1));
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return filter;
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}
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void KPFilterPage::checkFilterChain()
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{
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TQListViewItem *item = m_view->firstChild();
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bool ok(true);
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m_valid = true;
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while (item)
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{
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item->setPixmap(0, (ok ? SmallIcon("filter") : SmallIcon("filterstop")));
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KXmlCommand *f1 = m_activefilters.find(item->text(1));
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if (f1 && item->nextSibling())
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{
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KXmlCommand *f2 = m_activefilters.find(item->nextSibling()->text(1));
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if (f2)
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{
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if (!f2->acceptMimeType(f1->mimeType()))
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{
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item->setPixmap(0, SmallIcon("filterstop"));
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ok = false;
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m_valid = false;
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}
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else
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ok = true;
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}
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}
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item = item->nextSibling();
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}
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}
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bool KPFilterPage::isValid(TQString& msg)
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{
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if (!m_valid)
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{
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msg = i18n("<p>The filter chain is wrong. The output format of at least one filter is not supported by its follower. See <b>Filters</b> tab for more information.</p>");
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}
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return m_valid;
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}
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void KPFilterPage::updateInfo()
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{
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TQString txt;
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KXmlCommand *f = currentFilter();
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if (f)
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{
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TQString templ("<b>%1:</b> %2<br>");
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txt.append(templ.arg(i18n("Name")).arg(f->name()));
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txt.append(templ.arg(i18n("Requirements")).arg(f->requirements().join(", ")));
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txt.append(templ.arg(i18n("Input")).arg(f->inputMimeTypes().join(", ")));
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txt.append(templ.arg(i18n("Output")).arg(f->mimeType()));
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if ( !f->comment().isEmpty() )
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txt.append( "<br>" ).append( f->comment() );
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}
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m_info->setText(txt);
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}
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#include "kpfilterpage.moc"
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