/***************************************************************************
 *   Copyright (C) 2015 by Laurent Montel <montel@kde.org>                 *
 *                                                                         *
 *   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.                                   *
 ***************************************************************************/

#include "editdrawingtooldialog.h"

#include <KColorButton>
#include <KLineEdit>
#include <KLocalizedString>

#include <QDialogButtonBox>
#include <QLabel>
#include <QPushButton>
#include <QSpinBox>
#include <QVBoxLayout>

EditDrawingToolDialog::EditDrawingToolDialog( const QDomElement &initialState, QWidget *parent )
    : QDialog(parent)
{
    QDialogButtonBox *buttonBox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel );
    buttonBox->setObjectName( QStringLiteral("buttonbox") );
    QVBoxLayout *mainLayout = new QVBoxLayout(this);

    QPushButton *okButton = buttonBox->button( QDialogButtonBox::Ok );
    okButton->setDefault( true );
    okButton->setShortcut( Qt::CTRL | Qt::Key_Return );
    connect( buttonBox, &QDialogButtonBox::accepted, this, &EditDrawingToolDialog::accept );
    connect( buttonBox, &QDialogButtonBox::rejected, this, &EditDrawingToolDialog::reject );
    okButton->setDefault( true );

    QWidget *widget = new QWidget( this );
    QGridLayout * widgetLayout = new QGridLayout( widget );

    mainLayout->addWidget( widget );
    mainLayout->addWidget( buttonBox );

    m_name = new KLineEdit( widget );
    m_name->setObjectName( QStringLiteral("name") );
    mainLayout->addWidget( m_name );

    QLabel *tmplabel = new QLabel( i18n( "&Name:" ), widget );
    mainLayout->addWidget( tmplabel );
    tmplabel->setBuddy( m_name );

    widgetLayout->addWidget( tmplabel, 0, 0, Qt::AlignRight );
    widgetLayout->addWidget( m_name, 0, 1 );

    tmplabel = new QLabel( i18n( "Color:" ), widget );
    widgetLayout->addWidget( tmplabel, 1, 0, Qt::AlignRight );

    m_colorBn = new KColorButton( this );
    m_colorBn->setObjectName( QStringLiteral("colorbutton") );
    widgetLayout->addWidget( m_colorBn, 1, 1, Qt::AlignRight );

    tmplabel = new QLabel( i18n( "&Pen Width:" ), widget );
    widgetLayout->addWidget( tmplabel, 2, 0, Qt::AlignRight );

    m_penWidth = new QSpinBox( widget );
    m_penWidth->setObjectName( QStringLiteral("penWidth") );
    m_penWidth->setRange( 0, 50 );
    m_penWidth->setSuffix( i18nc( "Suffix for the pen width, eg '10 px'", " px" ) );
    tmplabel->setBuddy( m_penWidth );
    widgetLayout->addWidget( m_penWidth, 2, 1 );

    tmplabel = new QLabel( i18n( "&Opacity:" ), widget );
    widgetLayout->addWidget( tmplabel, 3, 0, Qt::AlignRight );

    m_opacity = new QSpinBox( widget );
    m_opacity->setObjectName( QStringLiteral("opacity") );
    m_opacity->setRange( 0, 100 );
    m_opacity->setSuffix( i18nc( "Suffix for the opacity level, eg '80 %'", " %" ) );
    tmplabel->setBuddy( m_opacity );
    widgetLayout->addWidget( m_opacity, 3, 1 );

    if ( initialState.isNull() )
    {
        setWindowTitle( i18n("Create drawing tool") );
        m_colorBn->setColor( Qt::black );
        m_penWidth->setValue( 2 );
        m_opacity->setValue( 100 );
    }
    else
    {
        setWindowTitle( i18n("Edit drawing tool") );
        loadTool( initialState );
    }

    m_name->setFocus();
}

EditDrawingToolDialog::~EditDrawingToolDialog()
{
}

QString EditDrawingToolDialog::name() const
{
    return m_name->text();
}

QDomDocument EditDrawingToolDialog::toolXml() const
{
    QDomDocument doc;
    QDomElement toolElement = doc.createElement( QStringLiteral("tool") );
    QDomElement engineElement = doc.createElement( QStringLiteral("engine") );
    QDomElement annotationElement = doc.createElement( QStringLiteral("annotation") );
    doc.appendChild( toolElement );
    toolElement.appendChild( engineElement );
    engineElement.appendChild( annotationElement );

    const QString color = m_colorBn->color().name();
    const double opacity = m_opacity->value() / 100.0;

    engineElement.setAttribute( QStringLiteral("color"), color );

    annotationElement.setAttribute( QStringLiteral("type"), QStringLiteral("Ink") );
    annotationElement.setAttribute( QStringLiteral("color"), color );
    annotationElement.setAttribute( QStringLiteral("width"), QString::number( m_penWidth->value() ) );

    if ( opacity != 1.0 )
        annotationElement.setAttribute( QStringLiteral("opacity"), QString::number( opacity ) );

    return doc;
}

void EditDrawingToolDialog::loadTool( const QDomElement &toolElement )
{
    const QDomElement engineElement = toolElement.elementsByTagName( QStringLiteral("engine") ).item( 0 ).toElement();
    const QDomElement annotationElement = engineElement.elementsByTagName( QStringLiteral("annotation") ).item( 0 ).toElement();

    if ( annotationElement.hasAttribute( QStringLiteral("color") ) )
        m_colorBn->setColor( QColor( annotationElement.attribute( QStringLiteral("color") ) ) );

    m_penWidth->setValue( annotationElement.attribute( QStringLiteral("width"), QStringLiteral("2") ).toInt() );
    m_opacity->setValue( annotationElement.attribute( QStringLiteral("opacity"), QStringLiteral("1.0") ).toDouble() * 100 );

    if ( toolElement.attribute( QStringLiteral("default"), QStringLiteral("false") ) == QLatin1String("true") )
        m_name->setText( i18n( toolElement.attribute( QStringLiteral("name") ).toLatin1().constData() ) );
    else
        m_name->setText( toolElement.attribute( QStringLiteral("name") ) );
}