serverlistview.cpp

//------------------------------------------------------------------------------
// serverlistview.cpp
//------------------------------------------------------------------------------
//
// 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) 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2009 "Zalewa" <zalewapl@gmail.com>
//------------------------------------------------------------------------------

#include "gui/widgets/serverlistview.h"

#include "configuration/doomseekerconfig.h"
#include "gui/models/serverlistcolumn.h"
#include "refresher/refresher.h"
#include <QDebug>
#include <QHeaderView>
#include <QItemDelegate>
#include <QMouseEvent>
#include <QPainter>
#include <QSortFilterProxyModel>
#include <QTextDocument>

class CustomItemDelegate : public QItemDelegate
{
        public:
                void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
                {
                        // First we're going to check for our new right aligned image
                        // option.
                        bool rightAligned = false;
                        QStyleOptionViewItem opt = option;

                        QVariant userRole = index.data(Qt::UserRole);
                        if(userRole.isValid() && userRole.type() == QVariant::Int && userRole.toInt() == USERROLE_RIGHTALIGNDECORATION)
                        {
                                opt.decorationAlignment = Qt::AlignRight|Qt::AlignVCenter;
                                rightAligned = true;
                        }

                        // Now we draw the table as usual.
                        QItemDelegate::paint(painter, opt, index);

                        // If the row is selected and we are using the right aligned feature
                        // we must now redraw the decoration.  The rectangle that was used
                        // in the previous function will cause the image to clip.
                        //
                        // The only other way I can think of for fixing that problem would
                        // be to completely rewrite this class, which I really don't want
                        // to do.
                        if(rightAligned && (opt.state & QStyle::State_Selected))
                        {
                                QVariant decorationRole = index.data(Qt::DecorationRole);
                                if(decorationRole.isValid())
                                {
                                        painter->save();
                                        painter->setClipRect(opt.rect);

                                        QPixmap pixmap = decoration(opt, decorationRole);
                                        drawDecoration(painter, opt, opt.rect, pixmap);

                                        painter->restore();
                                }
                        }
                }

        protected:
                void drawDecoration(QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect, const QPixmap &pixmap) const
                {
                        if(pixmap.isNull() || !rect.isValid())
                                return;

                        if(option.decorationAlignment == (Qt::AlignRight|Qt::AlignVCenter)) // Special handling.
                        {
                                QPoint p = QStyle::alignedRect(option.direction, option.decorationAlignment, pixmap.size(), option.rect).topLeft();
                                painter->drawPixmap(p, pixmap);
                        }
                        else
                                QItemDelegate::drawDecoration(painter, option, rect, pixmap);
                }
};


ServerListView::ServerListView(QWidget* parent) : QTableView(parent)
{
        // Prevent the fat rows problem.
        verticalHeader()->setDefaultSectionSize(fontMetrics().height() + 6);
#if QT_VERSION >= 0x050000
        verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);
#else
        verticalHeader()->setResizeMode(QHeaderView::Fixed);
#endif
        setShowGrid(gConfig.doomseeker.bDrawGridInServerTable);

        setItemDelegate(new CustomItemDelegate());
}

void ServerListView::mouseReleaseEvent(QMouseEvent* event)
{
        QModelIndex index = indexAt(event->pos());
        switch (event->button())
        {
                case Qt::MidButton:
                        if (index.isValid())
                        {
                                emit middleMouseClicked(index, event->pos());
                        }
                        break;

                case Qt::RightButton:
                        if (index.isValid())
                        {
                                emit rightMouseClicked(index, event->pos());
                        }
                        break;

                default:
                        QTableView::mouseReleaseEvent(event);
                        break;
        }
}

void ServerListView::mouseDoubleClickEvent(QMouseEvent* event)
{
        if (event->button() != Qt::LeftButton)
        {
                QTableView::mouseDoubleClickEvent(event);
        }
        else
        {
                QModelIndex index = indexAt(event->pos());
                if (index.isValid())
                {
                        emit leftMouseDoubleClicked(index, event->pos());
                }
        }
}

void ServerListView::setupTableProperties()
{
        setIconSize(QSize(26, 15));
        // Some flags that can't be set from the Designer.
        horizontalHeader()->setSortIndicatorShown(true);
        horizontalHeader()->setHighlightSections(false);

        setMouseTracking(true);

        setupTableColumnWidths();
}

void ServerListView::setupTableColumnWidths()
{
        const ServerListColumn* columns = ServerListColumns::columns;

        // Initialize the defaults.
        for (int colIdx = 0; colIdx < ServerListColumnId::NUM_SERVERLIST_COLUMNS; ++colIdx)
        {
                setColumnWidth(colIdx, columns[colIdx].width);
        }

        // Reload state from config, potentially overriding the defaults.
        QString &headerState = gConfig.doomseeker.serverListColumnState;
        if (!headerState.isEmpty())
        {
                horizontalHeader()->restoreState(QByteArray::fromBase64(headerState.toUtf8()));
        }

        // Enforce certain settings on columns, regardless of the state loaded from the config.
        for (int colIdx = 0; colIdx < ServerListColumnId::NUM_SERVERLIST_COLUMNS; ++colIdx)
        {
                setColumnHidden(colIdx, columns[colIdx].bHidden);
                QHeaderView::ResizeMode resizeMode = columns[colIdx].bResizable ?
                        QHeaderView::Interactive : QHeaderView::Fixed;
#if QT_VERSION >= 0x050000
                horizontalHeader()->setSectionResizeMode(colIdx, resizeMode);
#else
                horizontalHeader()->setResizeMode(colIdx, resizeMode);
#endif
        }

        // General settings.
#if QT_VERSION >= 0x050000
        horizontalHeader()->setSectionsMovable(true);
#else
        horizontalHeader()->setMovable(true);
#endif
}