/*

Dwarf Therapist

Copyright (c) 2009 Trey Stout (chmod)



Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:



The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.



THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

THE SOFTWARE.

*/

#include "rotatedheader.h"

#include "dwarfmodel.h"

#include "dwarfmodelproxy.h"

#include "dwarftherapist.h"

#include "defines.h"



RotatedHeader::RotatedHeader(Qt::Orientation orientation, QWidget *parent)

    : QHeaderView(orientation, parent)

    , m_hovered_column(-1)

{

    setClickable(true);

    setSortIndicatorShown(true);

    setMouseTracking(true);



    read_settings();

    connect(DT, SIGNAL(settings_changed()), this, SLOT(read_settings()));

}



void RotatedHeader::column_hover(int col) {

    updateSection(m_hovered_column);

    m_hovered_column = col;

    updateSection(col);

}



void RotatedHeader::read_settings() {

    QSettings *s = DT->user_settings();

    int cell_size = s->value("options/grid/cell_size", DEFAULT_CELL_SIZE).toInt();

    for(int i=1; i < count(); ++i) {

        if (!m_spacer_indexes.contains(i)) {

            resizeSection(i, cell_size);

        }

    }

    m_shade_column_headers = s->value("options/grid/shade_column_headers", true).toBool();

}



void RotatedHeader::paintSection(QPainter *p, const QRect &rect, int idx) const {

    if (!rect.isValid() || idx == 0)

        return QHeaderView::paintSection(p, rect, idx);



    QColor bg = model()->headerData(idx, Qt::Horizontal,

                                    Qt::BackgroundColorRole).value<QColor>();

    if (m_spacer_indexes.contains(idx)) {

        p->save();

        p->fillRect(rect, QBrush(bg));

        p->restore();

        return;

    }



    QStyleOptionHeader opt;

    opt.rect = rect;

    opt.orientation = Qt::Horizontal;

    opt.section = idx;

    opt.sortIndicator = QStyleOptionHeader::None;



    QStyle::State state = QStyle::State_None;

    if (isEnabled())

        state |= QStyle::State_Enabled;

    if (window()->isActiveWindow())

        state |= QStyle::State_Active;

    if (rect.contains(m_p))

        state |= QStyle::State_MouseOver;

    if (sortIndicatorSection() == idx) {

        //state |= QStyle::State_Sunken;

        if (sortIndicatorOrder() == Qt::AscendingOrder) {

            opt.sortIndicator = QStyleOptionHeader::SortDown;

        } else {

            opt.sortIndicator = QStyleOptionHeader::SortUp;

        }

    }

    if (m_hovered_column == idx) {

        state |= QStyle::State_MouseOver;

    }



    opt.state = state;

    style()->drawControl(QStyle::CE_HeaderSection, &opt, p);



    QBrush brush = QBrush(bg);

    if (m_shade_column_headers) {

        QLinearGradient g(rect.topLeft(), rect.bottomLeft());

        g.setColorAt(0.25, QColor(255, 255, 255, 10));

        g.setColorAt(1.0, bg);

        brush = QBrush(g);

    }

    if (idx > 0)

        p->fillRect(rect.adjusted(1,8,-1,-2), brush);



    if (sortIndicatorSection() == idx) {

        opt.rect = QRect(opt.rect.x() + opt.rect.width()/2 - 5, opt.rect.y(), 10, 8);

        style()->drawPrimitive(QStyle::PE_IndicatorHeaderArrow, &opt, p);

    }



    /* Draw a border around header if column has guides applied

    DwarfModelProxy *prox = static_cast<DwarfModelProxy*>(model());

    DwarfModel *dm = prox->get_dwarf_model();

    int col = dm->selected_col();

    if (dm->selected_col() == idx) {

        p->save();

        p->setPen(Qt::red);

        p->setBrush(Qt::NoBrush);

        p->drawRect(rect);

        p->restore();

    }

    */



    QString data = this->model()->headerData(idx, Qt::Horizontal).toString();

    p->save();

    p->setPen(Qt::black);

    p->setRenderHint(QPainter::Antialiasing);

    p->translate(rect.x(), rect.y());

    p->rotate(90);

    p->setFont(QFont("Verdana", 8));

    p->drawText(14, -4, data);

    p->restore();

}



void RotatedHeader::resizeSection(int logicalIndex, int size) {

    QHeaderView::resizeSection(logicalIndex, size);

}



void RotatedHeader::set_index_as_spacer(int idx) {

    m_spacer_indexes << idx;

}



void RotatedHeader::clear_spacers() {

    m_spacer_indexes.clear();

}



QSize RotatedHeader::sizeHint() const {

    return QSize(32, 150);

}



void RotatedHeader::mouseMoveEvent(QMouseEvent *e) {

    m_p = e->pos();

    QHeaderView::mouseMoveEvent(e);

}



void RotatedHeader::mousePressEvent(QMouseEvent *e) {

    m_p = e->pos();

    int idx = logicalIndexAt(e->pos());

    if (idx > 0 && idx < count() && e->button() == Qt::RightButton) {

        emit section_right_clicked(idx);

    }

    QHeaderView::mousePressEvent(e);

}



void RotatedHeader::leaveEvent(QEvent *e) {

    m_p = QPoint(-1, -1);

    QHeaderView::leaveEvent(e);

}



void RotatedHeader::contextMenuEvent(QContextMenuEvent *evt) {

    int idx = logicalIndexAt(evt->pos());

    if (idx == 0) { //name header

        QMenu *m = new QMenu(this);

        QAction *a = m->addAction(tr("Sort Alphabetically Ascending"), this, SLOT(sort_action()));

        a->setData(DwarfModelProxy::DSR_NAME_ASC);

        a = m->addAction(tr("Sort Alphabetically Descending"), this, SLOT(sort_action()));

        a->setData(DwarfModelProxy::DSR_NAME_DESC);

        a = m->addAction(tr("Sort by ID Ascending"), this, SLOT(sort_action()));

        a->setData(DwarfModelProxy::DSR_ID_ASC);

        a = m->addAction(tr("Sort by ID Descending"), this, SLOT(sort_action()));

        a->setData(DwarfModelProxy::DSR_ID_DESC);

        a = m->addAction(tr("Sort in Game Order"), this, SLOT(sort_action()));

        a->setData(DwarfModelProxy::DSR_GAME_ORDER);

        m->exec(viewport()->mapToGlobal(evt->pos()));

    } else {

        /* Don't do this yet

        // find out what set this is...

        QString set_name = model()->headerData(idx, Qt::Horizontal, Qt::UserRole).toString();

        QMenu *m = new QMenu(this);

        QAction *a = m->addAction(tr("Toggle Set %1").arg(set_name),

                                  this, SLOT(toggle_set_action()));

        a->setData(set_name);

        m->exec(viewport()->mapToGlobal(evt->pos()));

        */

    }

}



void RotatedHeader::sort_action() {

    QAction *sender = qobject_cast<QAction*>(QObject::sender());

    DwarfModelProxy::DWARF_SORT_ROLE role = static_cast<DwarfModelProxy::DWARF_SORT_ROLE>(sender->data().toInt());

    emit sort(0, role);

}



void RotatedHeader::toggle_set_action() {

    QAction *sender = qobject_cast<QAction*>(QObject::sender());

    QString set_name = sender->data().toString();

    for(int i = 1; i < count(); ++i) {

        QString col_set_name = model()->headerData(i, Qt::Horizontal,

                                                   Qt::UserRole).toString();

        if (col_set_name == set_name) {

            hideSection(i);

        }

    }

}