kdeprint Library API Documentation

kpfilterpage.cpp

00001 /* 00002 * This file is part of the KDE libraries 00003 * Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be> 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Library General Public 00007 * License version 2 as published by the Free Software Foundation. 00008 * 00009 * This library is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 * Library General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU Library General Public License 00015 * along with this library; see the file COPYING.LIB. If not, write to 00016 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00017 * Boston, MA 02111-1307, USA. 00018 **/ 00019 00020 #include "kpfilterpage.h" 00021 #include "kmfactory.h" 00022 #include "kxmlcommand.h" 00023 00024 #include <qtoolbutton.h> 00025 #include <qheader.h> 00026 #include <qtooltip.h> 00027 #include <qlayout.h> 00028 #include <klistview.h> 00029 #include <klocale.h> 00030 #include <kiconloader.h> 00031 #include <kmessagebox.h> 00032 #include <kactivelabel.h> 00033 #include <kdebug.h> 00034 #include <kapplication.h> 00035 #include <kdialog.h> 00036 00037 KPFilterPage::KPFilterPage(QWidget *parent, const char *name) 00038 : KPrintDialogPage(parent,name) 00039 { 00040 setTitle(i18n("Filters")); 00041 m_activefilters.setAutoDelete(true); 00042 m_valid = true; 00043 00044 m_view = new KListView(this); 00045 m_view->addColumn(""); 00046 m_view->setFrameStyle(QFrame::WinPanel|QFrame::Sunken); 00047 m_view->setLineWidth(1); 00048 m_view->setSorting(-1); 00049 m_view->header()->hide(); 00050 connect(m_view,SIGNAL(selectionChanged(QListViewItem*)),SLOT(slotItemSelected(QListViewItem*))); 00051 00052 m_add = new QToolButton(this); 00053 m_add->setIconSet(BarIconSet("filter")); 00054 QToolTip::add(m_add, i18n("Add filter")); 00055 m_remove = new QToolButton(this); 00056 m_remove->setIconSet(BarIconSet("remove")); 00057 QToolTip::add(m_remove, i18n("Remove filter")); 00058 m_up = new QToolButton(this); 00059 m_up->setIconSet(BarIconSet("up")); 00060 QToolTip::add(m_up, i18n("Move filter up")); 00061 m_down = new QToolButton(this); 00062 m_down->setIconSet(BarIconSet("down")); 00063 QToolTip::add(m_down, i18n("Move filter down")); 00064 m_configure = new QToolButton(this); 00065 m_configure->setIconSet(BarIconSet("configure")); 00066 QToolTip::add(m_configure, i18n("Configure filter")); 00067 connect(m_add,SIGNAL(clicked()),SLOT(slotAddClicked())); 00068 connect(m_remove,SIGNAL(clicked()),SLOT(slotRemoveClicked())); 00069 connect(m_up,SIGNAL(clicked()),SLOT(slotUpClicked())); 00070 connect(m_down,SIGNAL(clicked()),SLOT(slotDownClicked())); 00071 connect(m_configure,SIGNAL(clicked()),SLOT(slotConfigureClicked())); 00072 connect(m_view,SIGNAL(doubleClicked(QListViewItem*)),SLOT(slotConfigureClicked())); 00073 00074 m_info = new KActiveLabel(this); 00075 m_info->setVScrollBarMode( QScrollView::Auto ); 00076 m_info->setHScrollBarMode( QScrollView::Auto ); 00077 m_info->setFrameStyle( QFrame::Panel|QFrame::Sunken ); 00078 m_info->setMinimumSize( QSize( 240, 100 ) ); 00079 00080 QGridLayout *l1 = new QGridLayout(this, 2, 2, 0, KDialog::spacingHint()); 00081 l1->setColStretch(0, 1); 00082 QVBoxLayout *l2 = new QVBoxLayout(0, 0, 1); 00083 l1->addWidget(m_view, 0, 0); 00084 l1->addLayout(l2, 0, 1); 00085 l2->addWidget(m_add); 00086 l2->addWidget(m_remove); 00087 l2->addSpacing(5); 00088 l2->addWidget(m_up); 00089 l2->addWidget(m_down); 00090 l2->addSpacing(5); 00091 l2->addWidget(m_configure); 00092 l2->addStretch(1); 00093 l1->addMultiCellWidget(m_info, 1, 1, 0, 1); 00094 slotItemSelected(0); 00095 00096 resize(100,50); 00097 } 00098 00099 KPFilterPage::~KPFilterPage() 00100 { 00101 } 00102 00103 void KPFilterPage::updateButton() 00104 { 00105 /* QListViewItem *item = m_view->currentItem(); 00106 bool state=(item!=0); 00107 m_remove->setEnabled(state); 00108 m_up->setEnabled((state && item->itemAbove() != 0)); 00109 m_down->setEnabled((state && item->itemBelow() != 0)); 00110 m_configure->setEnabled(state);*/ 00111 } 00112 00113 void KPFilterPage::slotAddClicked() 00114 { 00115 bool ok; 00116 QString choice = KXmlCommandManager::self()->selectCommand( this ); 00117 ok = !choice.isEmpty(); 00118 if (ok) 00119 { 00120 KXmlCommand *cmd = KXmlCommandManager::self()->loadCommand(choice); 00121 if (!cmd) return; // Error 00122 QStringList filters = activeList(); 00123 int pos = KXmlCommandManager::self()->insertCommand(filters, cmd->name()); 00124 QListViewItem *prev(0); 00125 if (pos > 0) 00126 { 00127 prev = m_view->firstChild(); 00128 for (int i=1;prev && i<pos;i++) 00129 prev = prev->nextSibling(); 00130 } 00131 m_activefilters.insert(cmd->name(), cmd); 00132 QListViewItem *item = new QListViewItem(m_view, prev, cmd->description(), cmd->name()); 00133 item->setPixmap(0, SmallIcon("filter")); 00134 checkFilterChain(); 00135 } 00136 } 00137 00138 void KPFilterPage::slotRemoveClicked() 00139 { 00140 if (m_view->selectedItem()) 00141 { 00142 QString idname = m_view->selectedItem()->text(1); 00143 delete m_view->selectedItem(); 00144 m_activefilters.remove(idname); 00145 checkFilterChain(); 00146 if (m_view->currentItem()) 00147 m_view->setSelected(m_view->currentItem(), true); 00148 slotItemSelected(m_view->currentItem()); 00149 } 00150 } 00151 00152 void KPFilterPage::slotUpClicked() 00153 { 00154 QListViewItem *item = m_view->selectedItem(); 00155 if (item && item->itemAbove()) 00156 { 00157 QListViewItem *clone = new QListViewItem(m_view,item->itemAbove()->itemAbove(),item->text(0),item->text(1)); 00158 clone->setPixmap(0, SmallIcon("filter")); 00159 delete item; 00160 m_view->setSelected(clone, true); 00161 checkFilterChain(); 00162 } 00163 } 00164 00165 void KPFilterPage::slotDownClicked() 00166 { 00167 QListViewItem *item = m_view->selectedItem(); 00168 if (item && item->itemBelow()) 00169 { 00170 QListViewItem *clone = new QListViewItem(m_view,item->itemBelow(),item->text(0),item->text(1)); 00171 clone->setPixmap(0, SmallIcon("filter")); 00172 delete item; 00173 m_view->setSelected(clone, true); 00174 checkFilterChain(); 00175 } 00176 } 00177 00178 void KPFilterPage::slotConfigureClicked() 00179 { 00180 KXmlCommand *filter = currentFilter(); 00181 if (!filter || !KXmlCommandManager::self()->configure(filter, this)) 00182 KMessageBox::error(this,i18n("Internal error: unable to load filter.")); 00183 } 00184 00185 void KPFilterPage::slotItemSelected(QListViewItem *item) 00186 { 00187 m_remove->setEnabled((item != 0)); 00188 m_up->setEnabled((item != 0 && item->itemAbove() != 0)); 00189 m_down->setEnabled((item != 0 && item->itemBelow() != 0)); 00190 m_configure->setEnabled((item != 0)); 00191 updateInfo(); 00192 } 00193 00194 void KPFilterPage::setOptions(const QMap<QString,QString>& opts) 00195 { 00196 QStringList filters = QStringList::split(',',opts["_kde-filters"],false); 00197 // remove unneeded filters 00198 QDictIterator<KXmlCommand> dit(m_activefilters); 00199 for (;dit.current();) 00200 { 00201 if (filters.find(dit.currentKey()) == filters.end()) 00202 m_activefilters.remove(dit.currentKey()); 00203 else 00204 { 00205 dit.current()->setOptions(opts); 00206 ++dit; 00207 } 00208 } 00209 // add needed filters 00210 m_view->clear(); 00211 QListViewItem *item(0); 00212 for (QStringList::ConstIterator sit=filters.begin(); sit!=filters.end(); ++sit) 00213 { 00214 KXmlCommand *f(0); 00215 if ((f=m_activefilters.find(*sit)) == 0) 00216 { 00217 f = KXmlCommandManager::self()->loadCommand(*sit); 00218 if (f) 00219 { 00220 m_activefilters.insert(*sit,f); 00221 f->setOptions(opts); 00222 } 00223 } 00224 if (f) 00225 item = new QListViewItem(m_view,item,f->description(),f->name()); 00226 } 00227 checkFilterChain(); 00228 } 00229 00230 void KPFilterPage::getOptions(QMap<QString,QString>& opts, bool incldef) 00231 { 00232 QStringList filters = activeList(); 00233 for (QStringList::ConstIterator it=filters.begin(); it!=filters.end(); ++it) 00234 { 00235 KXmlCommand *f = m_activefilters.find(*it); 00236 if (f) 00237 f->getOptions(opts, incldef); 00238 } 00239 if (filters.count() > 0 || incldef) 00240 { 00241 opts["_kde-filters"] = filters.join(","); 00242 } 00243 } 00244 00245 QStringList KPFilterPage::activeList() 00246 { 00247 QStringList list; 00248 QListViewItem *item = m_view->firstChild(); 00249 while (item) 00250 { 00251 list.append(item->text(1)); 00252 item = item->nextSibling(); 00253 } 00254 return list; 00255 } 00256 00257 KXmlCommand* KPFilterPage::currentFilter() 00258 { 00259 KXmlCommand *filter(0); 00260 if (m_view->selectedItem()) 00261 filter = m_activefilters.find(m_view->selectedItem()->text(1)); 00262 return filter; 00263 } 00264 00265 void KPFilterPage::checkFilterChain() 00266 { 00267 QListViewItem *item = m_view->firstChild(); 00268 bool ok(true); 00269 m_valid = true; 00270 while (item) 00271 { 00272 item->setPixmap(0, (ok ? SmallIcon("filter") : SmallIcon("filterstop"))); 00273 KXmlCommand *f1 = m_activefilters.find(item->text(1)); 00274 if (f1 && item->nextSibling()) 00275 { 00276 KXmlCommand *f2 = m_activefilters.find(item->nextSibling()->text(1)); 00277 if (f2) 00278 { 00279 if (!f2->acceptMimeType(f1->mimeType())) 00280 { 00281 item->setPixmap(0, SmallIcon("filterstop")); 00282 ok = false; 00283 m_valid = false; 00284 } 00285 else 00286 ok = true; 00287 } 00288 } 00289 item = item->nextSibling(); 00290 } 00291 } 00292 00293 bool KPFilterPage::isValid(QString& msg) 00294 { 00295 if (!m_valid) 00296 { 00297 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>"); 00298 } 00299 return m_valid; 00300 } 00301 00302 void KPFilterPage::updateInfo() 00303 { 00304 QString txt; 00305 KXmlCommand *f = currentFilter(); 00306 if (f) 00307 { 00308 QString templ("<b>%1:</b> %2<br>"); 00309 txt.append(templ.arg(i18n("Name")).arg(f->name())); 00310 txt.append(templ.arg(i18n("Requirements")).arg(f->requirements().join(", "))); 00311 txt.append(templ.arg(i18n("Input")).arg(f->inputMimeTypes().join(", "))); 00312 txt.append(templ.arg(i18n("Output")).arg(f->mimeType())); 00313 if ( !f->comment().isEmpty() ) 00314 txt.append( "<br>" ).append( f->comment() ); 00315 } 00316 m_info->setText(txt); 00317 } 00318 00319 #include "kpfilterpage.moc"
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This file is part of the documentation for kdeprint Library Version 3.2.3.
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