ksane_device_dialog.cpp Source File

libs/libksane/libksane

 /* ============================================================
  *
  * This file is part of the KDE project
  *
  * Date        : 2007-09-13
  * Description : Sane interface for KDE
  *
  * Copyright (C) 2007-2008 by Kare Sars <kare dot sars at iki dot fi>
  * Copyright (C) 2009 by Grzegorz Kurtyka <grzegorz dot kurtyka at gmail dot com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) version 3, or any
  * later version accepted by the membership of KDE e.V. (or its
  * successor approved by the membership of KDE e.V.), which shall
  * act as a proxy defined in Section 6 of version 3 of the license.
  *
  * 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  * ============================================================ */
 
 // Local includes
 #include "ksane_device_dialog.h"
 #include "ksane_device_dialog.moc"
 
 
 // Sane includes
 extern "C"
 {
 #include <sane/saneopts.h>
 #include <sane/sane.h>
 }
 
 
 // KDE includes
 #include <KDebug>
 #include <KPushButton>
 
 #include <QScrollArea>
 #include <QLabel>
 
 namespace KSaneIface
 {
 
 KSaneDeviceDialog::KSaneDeviceDialog(QWidget *parent)
     : KDialog(parent)
 {
 
     setButtons(KDialog::User1 | KDialog::Ok | KDialog::Cancel);
     setButtonText(User1, i18n("Reload devices list"));
     
     m_btnGroup = new QButtonGroup(this);
 
     m_btnBox = new QGroupBox;
     QVBoxLayout *layout = new QVBoxLayout;
     m_btnContainer = new QWidget;
     m_btnLayout = new QVBoxLayout(m_btnContainer);
     QScrollArea *area = new QScrollArea;
     
     m_btnBox->setLayout(layout);
 
     QLabel *explanation =
       new QLabel(i18n("<html>The SANE (Scanner Access Now Easy) system could not find any device.<br>"
                       "Check that the scanner is plugged in and turned on<br>"
                       "or check your systems scanner setup.<br>"
                       "For details about SANE see the "
                       "<a href='http://www.sane-project.org/'>SANE homepage</a>.</html>"));
     explanation->setOpenExternalLinks(true);
     int l,t,r,b;
     layout->getContentsMargins(&l, &t, &r, &b);
     explanation->setContentsMargins(l, t, r, b);
 
     layout->addWidget(explanation);
     m_btnBox->adjustSize();  // make sure to see the complete explanation text
     layout->addWidget(area);
     layout->setContentsMargins(0,0,0,0);
 
     area->setWidgetResizable(true);
     area->setFrameShape(QFrame::NoFrame);
     area->setWidget(m_btnContainer);
 
     setMainWidget(m_btnBox);
     setMinimumHeight(200);
     m_findDevThread = FindSaneDevicesThread::getInstance();
 
     connect(m_findDevThread, SIGNAL(finished()), this, SLOT(updateDevicesList()));
     connect(this, SIGNAL(user1Clicked()),        this, SLOT(reloadDevicesList()));
 
     reloadDevicesList();
 }
 
 KSaneDeviceDialog::~KSaneDeviceDialog() {
 }
 
 void KSaneDeviceDialog::reloadDevicesList()
 {
     setAvailable(false);
     while (!m_btnGroup->buttons().isEmpty()) {
         delete m_btnGroup->buttons().takeFirst();
     }
     m_btnBox->setTitle(i18n("Looking for devices. Please wait."));
     m_btnBox->layout()->itemAt(0)->widget()->hide();  // explanation
     enableButton(KDialog::User1, false);
 
     if(!m_findDevThread->isRunning()) {
         m_findDevThread->start();
     }
 }
 
 void KSaneDeviceDialog::setAvailable(bool avail)
 {
     enableButtonOk(avail);
     if(avail) {
         m_selectedDevice = getSelectedName();
         setButtonFocus(KDialog::Ok);
     }
 }
 
 void KSaneDeviceDialog::setDefault(QString defaultBackend)
 {
         m_selectedDevice = defaultBackend;
 }
 
 QString KSaneDeviceDialog::getSelectedName() {
     QAbstractButton *selectedButton = m_btnGroup->checkedButton();
     if(selectedButton) {
         return selectedButton->objectName();
     }
     return QString();
 }
 
 void KSaneDeviceDialog::updateDevicesList()
 {
     while (!m_btnGroup->buttons().isEmpty()) {
         delete m_btnGroup->buttons().takeFirst();
     }
 
     const QList<KSaneWidget::DeviceInfo> list = m_findDevThread->devicesList();
     if (list.isEmpty()) {
         m_btnBox->setTitle(i18n("Sorry. No devices found."));
         m_btnBox->layout()->itemAt(0)->widget()->show();  // explanation
         m_btnBox->layout()->itemAt(1)->widget()->hide();  // scroll area
         enableButton(KDialog::User1, true);
         return;
     }
 
     delete m_btnLayout;
     m_btnLayout = new QVBoxLayout;
     m_btnContainer->setLayout(m_btnLayout);
     m_btnBox->setTitle(i18n("Found devices:"));
     m_btnBox->layout()->itemAt(0)->widget()->hide();  // explanation
     m_btnBox->layout()->itemAt(1)->widget()->show();  // scroll area
 
     for (int i=0; i< list.size(); i++) {
         QRadioButton *b = new QRadioButton(this);
         b->setObjectName(list[i].name);
         b->setToolTip(list[i].name);
         b->setText(QString("%1 : %2\n%3")
                     .arg(list[i].vendor)
                     .arg(list[i].model)
                     .arg(list[i].name));
 
         m_btnLayout->addWidget(b);
         m_btnGroup->addButton(b);
         connect(b, SIGNAL(clicked(bool)), this, SLOT(setAvailable(bool)));
         if((i==0) || (list[i].name == m_selectedDevice)) {
             b->setChecked(true);
             setAvailable(true);
         }
     }
 
     m_btnLayout->addStretch();
 
     if(list.size() == 1) {
         button(KDialog::Ok)->animateClick();
     }
 
     enableButton(KDialog::User1, true);
 }
 
 }  // NameSpace KSaneIface
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