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/*
* Abstract Contact Delegate - base class for other delegates
*
* Copyright (C) 2011 Martin Klapetek <martin.klapetek@gmail.com>
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "abstract-contact-delegate.h"
#include <QApplication>
#include <QStyle>
#include <QPainter>
#include <QToolTip>
#include <QHelpEvent>
#include <QFontDatabase>
#include <QAbstractItemView>
#include <QStyleOptionViewItem>
#include <KIconLoader>
#include <KTp/types.h>
const int SPACING = 2;
const int ACCOUNT_ICON_SIZE = 22;
const qreal GROUP_ICON_OPACITY = 0.6;
AbstractContactDelegate::AbstractContactDelegate(QObject *parent)
: QStyledItemDelegate(parent)
{
}
AbstractContactDelegate::~AbstractContactDelegate()
{
}
void AbstractContactDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if (index.data(KTp::RowTypeRole).toInt() == KTp::ContactRowType || index.data(KTp::RowTypeRole).toInt() == KTp::PersonRowType) {
paintContact(painter, option, index);
} else {
paintHeader(painter, option, index);
}
}
QSize AbstractContactDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if (index.data(KTp::RowTypeRole).toInt() == KTp::ContactRowType || index.data(KTp::RowTypeRole).toInt() == KTp::PersonRowType) {
return sizeHintContact(option, index);
} else {
return sizeHintHeader(option, index);
}
}
void AbstractContactDelegate::paintHeader(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QStyleOptionViewItem opt = option;
initStyleOption(&opt, index);
painter->save();
painter->setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform | QPainter::HighQualityAntialiasing);
painter->setClipRect(opt.rect);
QStyle *style = QApplication::style();
style->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter);
QRect groupRect = opt.rect;
//paint the background
QBrush bgBrush(option.palette.color(QPalette::Active, QPalette::Button).lighter(105));
painter->fillRect(groupRect, bgBrush);
//paint very subtle line at the bottom
QPen thinLinePen;
thinLinePen.setWidth(0);
thinLinePen.setColor(option.palette.color(QPalette::Active, QPalette::Button));
painter->setPen(thinLinePen);
//to get nice sharp 1px line we need to turn AA off, otherwise it will be all blurry
painter->setRenderHint(QPainter::Antialiasing, false);
painter->drawLine(groupRect.bottomLeft(), groupRect.bottomRight());
painter->setRenderHint(QPainter::Antialiasing, true);
//remove spacing from the sides and one point to the bottom for the 1px line
groupRect.adjust(SPACING, 0, -SPACING, -1);
//get the proper rect for the expand sign
int iconSize = IconSize(KIconLoader::Toolbar);
QStyleOption expandSignOption = option;
expandSignOption.rect = groupRect;
//FIXME hardcoded magic...though corresponds with the list indentation
expandSignOption.rect.setSize(QSize(14, iconSize));
expandSignOption.rect.moveLeft(groupRect.left());
expandSignOption.rect.moveTop(groupRect.top() + groupRect.height()/2 - expandSignOption.rect.height()/2);
// simulates mouseover to highlight arrow when selected with keyboard
if (option.state & QStyle::State_Selected) {
expandSignOption.state |= QStyle::State_MouseOver;
}
//paint the expand sign
if (option.state & QStyle::State_Open) {
style->drawPrimitive(QStyle::PE_IndicatorArrowDown, &expandSignOption, painter);
} else {
style->drawPrimitive(QStyle::PE_IndicatorArrowRight, &expandSignOption, painter);
}
QFont groupFont = QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont);
//paint the group icon
QRect groupIconRect;
groupIconRect.setSize(QSize(ACCOUNT_ICON_SIZE, ACCOUNT_ICON_SIZE));
groupIconRect.moveRight(groupRect.right());
groupIconRect.moveTop(groupRect.top() + groupRect.height()/2 - groupIconRect.height()/2);
if (index.data(KTp::RowTypeRole).toInt() == KTp::AccountRowType) {
//draw the icon with some opacity
painter->setOpacity(GROUP_ICON_OPACITY);
painter->drawPixmap(groupIconRect, index.data(Qt::DecorationRole).value<QIcon>().pixmap(ACCOUNT_ICON_SIZE));
painter->setOpacity(1.0);
} else {
groupIconRect.setWidth(0);
}
//paint the header string
QRect groupLabelRect = groupRect.adjusted(expandSignOption.rect.width() + SPACING * 2, 0, -groupIconRect.width() -SPACING, 0);
QString countsString = QString("(%1/%2)").arg(index.data(KTp::HeaderOnlineUsersRole).toString(),
index.data(KTp::HeaderTotalUsersRole).toString());
QString groupHeaderString = index.data(Qt::DisplayRole).toString();
QFontMetrics groupFontMetrics(groupFont);
painter->setFont(groupFont);
if (index.data(KTp::HeaderTotalUsersRole).toInt() > 0) {
painter->setPen(option.palette.color(QPalette::Disabled, QPalette::Text));
painter->drawText(groupLabelRect, Qt::AlignVCenter | Qt::AlignRight, countsString);
}
painter->setPen(option.palette.color(QPalette::Active, QPalette::Text));
painter->drawText(groupLabelRect, Qt::AlignVCenter | Qt::AlignLeft,
groupFontMetrics.elidedText(groupHeaderString, Qt::ElideRight,
groupLabelRect.width() - groupFontMetrics.width(countsString) - SPACING));
painter->restore();
}
QSize AbstractContactDelegate::sizeHintHeader(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
Q_UNUSED(option)
Q_UNUSED(index)
// Add one point to the bottom for the 1px line
return QSize(0, qMax(ACCOUNT_ICON_SIZE, QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont).pixelSize()) + SPACING + 1);
}
bool AbstractContactDelegate::helpEvent(QHelpEvent *event, QAbstractItemView *view, const QStyleOptionViewItem &option, const QModelIndex &index)
{
Q_UNUSED(event)
Q_UNUSED(view)
Q_UNUSED(option)
Q_UNUSED(index)
return false;
}
void AbstractContactDelegate::avatarToGray(QPixmap &avatar) const
{
QImage image = avatar.toImage();
QImage alpha= image.alphaChannel();
for (int i = 0; i < image.width(); ++i) {
for (int j = 0; j < image.height(); ++j) {
int colour = qGray(image.pixel(i, j));
image.setPixel(i, j, qRgb(colour, colour, colour));
}
}
image.setAlphaChannel(alpha);
avatar = QPixmap::fromImage(image);
}
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