/**
 * This file is part of the HTML rendering engine for KDE.
 *
 * Copyright (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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.
 *
 */

#include "rendering/render_generated.h"
#include "rendering/render_style.h"
#include "rendering/enumerate.h"
#include "rendering/counter_tree.h"
#include "css/css_valueimpl.h"

using namespace khtml;
using namespace Enumerate;

// -------------------------------------------------------------------------

RenderCounterBase::RenderCounterBase(DOM::NodeImpl* node)
    : RenderText(node,0), m_counterNode(0)
{
}

void RenderCounterBase::layout()
{
    KHTMLAssert( needsLayout() );

    if ( !minMaxKnown() )
        calcMinMaxWidth();

    RenderText::layout();
}

void RenderCounterBase::calcMinMaxWidth()
{
    KHTMLAssert( !minMaxKnown() );

    generateContent();

    if (str) str->deref();
    str = new DOM::DOMStringImpl(m_item.unicode(), m_item.length());
    str->ref();

    RenderText::calcMinMaxWidth();
}


void RenderCounterBase::updateContent()
{
    setMinMaxKnown(false);
}

// -------------------------------------------------------------------------

RenderCounter::RenderCounter(DOM::NodeImpl* node, const DOM::CounterImpl* counter)
    : RenderCounterBase(node), m_counter(counter)
{
}

QString RenderCounter::toListStyleType(int value, int total, EListStyleType type)
{
    QString item;
    switch(type)
    {
    case LNONE:
        break;
// Glyphs: (these values are not really used and instead handled by RenderGlyph)
    case LDISC:
        item = QChar(0x2022);
        break;
    case LCIRCLE:
        item = QChar(0x25e6);
        break;
    case LSQUARE:
        item = QChar(0x25a0);
        break;
    case LBOX:
        item = QChar(0x25a1);
        break;
    case LDIAMOND:
        item = QChar(0x25c6);
        break;
// Numeric:
    case LDECIMAL:
        item.setNum ( value );
        break;
    case DECIMAL_LEADING_ZERO: {
        int decimals = 2;
        int t = total/100;
        while (t>0) {
            t = t/10;
            decimals++;
        }
        decimals = kMax(decimals, 2);
        QString num = QString::number(value);
        item.fill('0',decimals-num.length());
        item.append(num);
        break;
    }
    case ARABIC_INDIC:
        item = toArabicIndic( value );
        break;
    case LAO:
        item = toLao( value );
        break;
    case PERSIAN:
    case URDU:
        item = toPersianUrdu( value );
        break;
    case THAI:
        item = toThai( value );
        break;
    case TIBETAN:
        item = toTibetan( value );
        break;
// Algoritmic:
    case LOWER_ROMAN:
        item = toRoman( value, false );
        break;
    case UPPER_ROMAN:
        item = toRoman( value, true );
        break;
    case HEBREW:
        item = toHebrew( value );
        break;
    case ARMENIAN:
        item = toArmenian( value );
        break;
    case GEORGIAN:
        item = toGeorgian( value );
        break;
// Alphabetic:
    case LOWER_ALPHA:
    case LOWER_LATIN:
        item = toLowerLatin( value );
        break;
    case UPPER_ALPHA:
    case UPPER_LATIN:
        item = toUpperLatin( value );
        break;
    case LOWER_GREEK:
        item = toLowerGreek( value );
        break;
    case UPPER_GREEK:
        item = toUpperGreek( value );
        break;
    case HIRAGANA:
        item = toHiragana( value );
        break;
    case HIRAGANA_IROHA:
        item = toHiraganaIroha( value );
        break;
    case KATAKANA:
        item = toKatakana( value );
        break;
    case KATAKANA_IROHA:
        item = toKatakanaIroha( value );
        break;
// Ideographic:
    case JAPANESE_FORMAL:
        item = toJapaneseFormal( value );
        break;
    case JAPANESE_INFORMAL:
        item = toJapaneseInformal( value );
        break;
    case SIMP_CHINESE_FORMAL:
        item = toSimpChineseFormal( value );
        break;
    case SIMP_CHINESE_INFORMAL:
        item = toSimpChineseInformal( value );
        break;
    case TRAD_CHINESE_FORMAL:
        item = toTradChineseFormal( value );
        break;
    case CJK_IDEOGRAPHIC:
        // CSS 3 List says treat as trad-chinese-informal
    case TRAD_CHINESE_INFORMAL:
        item = toTradChineseInformal( value );
        break;
    default:
        item.setNum ( value );
        break;
    }
    return item;
}

void RenderCounter::generateContent()
{
    bool counters;
    counters = !m_counter->separator().isNull();

    if (!m_counterNode)
        m_counterNode = getCounter(m_counter->identifier().string(), true, counters);

    int value = m_counterNode->count();
    if (m_counterNode->isReset()) value = m_counterNode->value();
    int total = value;
    if (m_counterNode->parent()) total = m_counterNode->parent()->total();
    m_item = toListStyleType(value, total, (EListStyleType)m_counter->listStyle());

    if (counters) {
        CounterNode *counter = m_counterNode->parent();
        // we deliberately do not render the root counter-node
        while(counter->parent() && !(counter->isReset() && counter->parent()->isRoot())) {
            value = counter->count();
            total = counter->parent()->total();
            m_item = toListStyleType(value, total, (EListStyleType)m_counter->listStyle()) + m_counter->separator().string() + m_item;
            counter = counter->parent();
        };
    }

}

// -------------------------------------------------------------------------

RenderQuote::RenderQuote(DOM::NodeImpl* node, EQuoteContent type)
    : RenderCounterBase(node), m_quoteType(type)
{
}


int RenderQuote::quoteCount() const
{
    switch(m_quoteType) {
         case OPEN_QUOTE:
         case NO_OPEN_QUOTE:
            return 1;
         case CLOSE_QUOTE:
         case NO_CLOSE_QUOTE:
            return -1;
         case NO_QUOTE:
            return 0;
    }
    assert(false);
    return 0;
}

void RenderQuote::generateContent()
{
    bool visual;
    if (m_quoteType == NO_CLOSE_QUOTE || m_quoteType == NO_OPEN_QUOTE)
        visual = false;
    else
        visual = true;

    if (!m_counterNode)
        m_counterNode = getCounter("-khtml-quotes", visual, false);

    int value = m_counterNode->count();
    if (m_counterNode->isReset()) value = m_counterNode->value();
    switch (m_quoteType) {
         case OPEN_QUOTE:
            m_item = style()->openQuote( value );
            break;
         case CLOSE_QUOTE:
            m_item = style()->closeQuote( value );
            break;
         case NO_OPEN_QUOTE:
         case NO_CLOSE_QUOTE:
         case NO_QUOTE:
            m_item = QString();
    }
}

// -------------------------------------------------------------------------

RenderGlyph::RenderGlyph(DOM::NodeImpl* node, EListStyleType type)
    : RenderBox(node), m_type(type)
{
    setInline(true);
//     setReplaced(true);
}

void RenderGlyph::setStyle(RenderStyle *_style)
{
    RenderBox::setStyle(_style);

    const QFontMetrics &fm = style()->fontMetrics();
    QRect xSize= fm.boundingRect('x');
    m_height = xSize.height();
    m_width = xSize.width();;

    switch(m_type) {
    // Glyphs:
        case LDISC:
        case LCIRCLE:
        case LSQUARE:
        case LBOX:
        case LDIAMOND:
        case LNONE:
            break;
        default:
            // not a glyph !
            assert(false);
            break;
    }
}

void RenderGlyph::calcMinMaxWidth()
{
    m_minWidth = m_width;
    m_maxWidth = m_width;

    setMinMaxKnown();
}

short RenderGlyph::lineHeight(bool /*b*/) const
{
    return height();
}

short RenderGlyph::baselinePosition(bool /*b*/) const
{
    return height();
}

void RenderGlyph::paint(PaintInfo& paintInfo, int _tx, int _ty)
{
    if (paintInfo.phase != PaintActionForeground)
        return;

    if (style()->visibility() != VISIBLE)  return;

    _tx += m_x;
    _ty += m_y;

    if((_ty > paintInfo.r.bottom()) || (_ty + m_height <= paintInfo.r.top()))
        return;

    QPainter* p = paintInfo.p;

    const QColor color( style()->color() );
    p->setPen( color );

    int xHeight = m_height;
    int bulletWidth = (xHeight+1)/2;
    int yoff = (xHeight - 1)/4;
    QRect marker(_tx, _ty + yoff, bulletWidth, bulletWidth);

    switch(m_type) {
    case LDISC:
        p->setBrush( color );
        p->drawEllipse( marker );
        return;
    case LCIRCLE:
        p->setBrush( Qt::NoBrush );
        p->drawEllipse( marker );
        return;
    case LSQUARE:
        p->setBrush( color );
        p->drawRect( marker );
        return;
    case LBOX:
        p->setBrush( Qt::NoBrush );
        p->drawRect( marker );
        return;
    case LDIAMOND: {
        static QPointArray diamond(4);
        int x = marker.x();
        int y = marker.y();
        int s = bulletWidth/2;
        diamond[0] = QPoint(x+s,   y);
        diamond[1] = QPoint(x+2*s, y+s);
        diamond[2] = QPoint(x+s,   y+2*s);
        diamond[3] = QPoint(x,     y+s);
        p->setBrush( color );
        p->drawConvexPolygon( diamond, 0, 4 );
        return;
    }
    case LNONE:
        return;
    default:
        // not a glyph
        assert(false);
    }
}