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/***************************************************************************
* Copyright (C) 2009 by Rafael Fernández López <ereslibre@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. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA *
***************************************************************************/
#include "CategoryDrawer.h"
#include <KCategorizedSortFilterProxyModel>
#include <QPainter>
#include <QApplication>
#include <QStyleOption>
CategoryDrawer::CategoryDrawer(KCategorizedView *view)
: KCategoryDrawerV3(view)
{
//! setLeftMargin( 7 );
//! setRightMargin( 7 );
}
void CategoryDrawer::drawCategory(const QModelIndex &index,
int sortRole,
const QStyleOption &option,
QPainter *painter) const
{
Q_UNUSED( option )
Q_UNUSED( painter )
Q_UNUSED( sortRole )
painter->setRenderHint(QPainter::Antialiasing);
const QRect optRect = option.rect;
QFont font(QApplication::font());
font.setBold(true);
const QFontMetrics fontMetrics = QFontMetrics(font);
const int height = categoryHeight(index, option);
//BEGIN: decoration gradient
{
QPainterPath path(optRect.bottomLeft());
path.lineTo(QPoint(optRect.topLeft().x(), optRect.topLeft().y() - 3));
const QPointF topLeft(optRect.topLeft());
QRectF arc(topLeft, QSizeF(4, 4));
path.arcTo(arc, 180, -90);
path.lineTo(optRect.topRight());
path.lineTo(optRect.bottomRight());
path.lineTo(optRect.bottomLeft());
QColor window(option.palette.window().color());
const QColor base(option.palette.base().color());
window.setAlphaF(0.4);
QLinearGradient decoGradient1(optRect.topLeft(), optRect.bottomLeft());
decoGradient1.setColorAt(0, window);
decoGradient1.setColorAt(1, Qt::transparent);
QLinearGradient decoGradient2(optRect.topLeft(), optRect.topRight());
decoGradient2.setColorAt(0, Qt::transparent);
decoGradient2.setColorAt(1, base);
painter->fillPath(path, decoGradient1);
painter->fillPath(path, decoGradient2);
}
//END: decoration gradient
{
QRect newOptRect(optRect);
newOptRect.setLeft(newOptRect.left() + 1);
newOptRect.setTop(newOptRect.top() + 1);
//BEGIN: inner top left corner
{
painter->save();
painter->setPen(option.palette.base().color());
const QPointF topLeft(newOptRect.topLeft());
QRectF arc(topLeft, QSizeF(4, 4));
arc.translate(0.5, 0.5);
painter->drawArc(arc, 1440, 1440);
painter->restore();
}
//END: inner top left corner
//BEGIN: inner left vertical line
{
QPoint start(newOptRect.topLeft());
start.ry() += 3;
QPoint verticalGradBottom(newOptRect.topLeft());
verticalGradBottom.ry() += newOptRect.height() - 3;
QLinearGradient gradient(start, verticalGradBottom);
gradient.setColorAt(0, option.palette.base().color());
gradient.setColorAt(1, Qt::transparent);
painter->fillRect(QRect(start, QSize(1, newOptRect.height() - 3)), gradient);
}
//END: inner left vertical line
//BEGIN: inner horizontal line
{
QPoint start(newOptRect.topLeft());
start.rx() += 3;
QPoint horizontalGradTop(newOptRect.topLeft());
horizontalGradTop.rx() += newOptRect.width() - 3;
QLinearGradient gradient(start, horizontalGradTop);
gradient.setColorAt(0, option.palette.base().color());
gradient.setColorAt(1, Qt::transparent);
painter->fillRect(QRect(start, QSize(newOptRect.width() - 3, 1)), gradient);
}
//END: inner horizontal line
}
QColor outlineColor = option.palette.text().color();
outlineColor.setAlphaF(0.35);
//BEGIN: top left corner
{
painter->save();
painter->setPen(outlineColor);
const QPointF topLeft(optRect.topLeft());
QRectF arc(topLeft, QSizeF(4, 4));
arc.translate(0.5, 0.5);
painter->drawArc(arc, 1440, 1440);
painter->restore();
}
//END: top left corner
//BEGIN: left vertical line
{
QPoint start(optRect.topLeft());
start.ry() += 3;
QPoint verticalGradBottom(optRect.topLeft());
verticalGradBottom.ry() += optRect.height() - 3;
QLinearGradient gradient(start, verticalGradBottom);
gradient.setColorAt(0, outlineColor);
gradient.setColorAt(1, option.palette.base().color());
painter->fillRect(QRect(start, QSize(1, optRect.height() - 3)), gradient);
}
//END: left vertical line
//BEGIN: horizontal line
{
QPoint start(optRect.topLeft());
start.rx() += 3;
QPoint horizontalGradTop(optRect.topLeft());
horizontalGradTop.rx() += optRect.width() - 3;
QLinearGradient gradient(start, horizontalGradTop);
gradient.setColorAt(0, outlineColor);
gradient.setColorAt(1, option.palette.base().color());
painter->fillRect(QRect(start, QSize(optRect.width() - 3, 1)), gradient);
}
//END: horizontal line
//BEGIN: draw text
{
const QString category = index.data(KCategorizedSortFilterProxyModel::CategoryDisplayRole).toString();
QRect textRect = QRect(option.rect.topLeft(), QSize(option.rect.width(), height));
textRect.setTop(textRect.top() + 2 + 3 /* corner */);
textRect.setLeft(textRect.left() + 2 + 3 /* corner */ + 3 /* a bit of margin */);
painter->save();
painter->setFont(font);
QColor penColor(option.palette.text().color());
penColor.setAlphaF(0.6);
painter->setPen(penColor);
painter->drawText(textRect, Qt::AlignLeft | Qt::AlignTop, category);
painter->restore();
}
//END: draw text
}
int CategoryDrawer::categoryHeight(const QModelIndex &index, const QStyleOption &option) const
{
Q_UNUSED( index );
Q_UNUSED( option );
QFont font(QApplication::font());
font.setBold(true);
const QFontMetrics fontMetrics = QFontMetrics(font);
return fontMetrics.height() + 2 + 12 /* vertical spacing */;
}
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