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lxqt-config-packaging/liblxqt-config-cursor/itemdelegate.cpp

142 lines
4.7 KiB

/* Copyright © 2006-2007 Fredrik Höglund <fredrik@kde.org>
* (c)GPL2 (c)GPL3
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 or at your option version 3 as published
* by the Free Software Foundation.
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* additional code: Ketmar // Vampire Avalon (psyc://ketmar.no-ip.org/~Ketmar)
*/
#include "itemdelegate.h"
#include "crtheme.h"
#include <QApplication>
#include <QModelIndex>
#include <QPainter>
namespace {
const int decorationMargin = 8;
}
///////////////////////////////////////////////////////////////////////////////
ItemDelegate::ItemDelegate(QObject *parent) : QAbstractItemDelegate(parent)
{
}
ItemDelegate::~ItemDelegate()
{
}
QString ItemDelegate::firstLine(const QModelIndex &index) const
{
if (index.isValid()) return index.model()->data(index, Qt::DisplayRole).toString();
return QString();
}
QString ItemDelegate::secondLine(const QModelIndex &index) const
{
if (index.isValid()) return index.model()->data(index, XCursorThemeData::DisplayDetailRole).toString();
return QString();
}
QPixmap ItemDelegate::decoration(const QModelIndex &index) const
{
if (index.isValid()) return qvariant_cast<QPixmap>(index.model()->data(index, Qt::DecorationRole));
return QPixmap();
}
QSize ItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if (!index.isValid()) return QSize();
QFont normalfont = option.font;
QFont boldfont = normalfont;
boldfont.setBold(true);
// Extract the items we want to measure
QString firstRow = firstLine(index);
QString secondRow = secondLine(index);
// Compute the height
QFontMetrics fm1(boldfont);
QFontMetrics fm2(normalfont);
int height = fm1.lineSpacing() + fm2.lineSpacing();
height = qMax(height, option.decorationSize.height());
// Compute the text width
int width = fm1.width(firstRow);
width = qMax(width, fm2.width(secondRow));
// Add decoration width + margin
width += option.decorationSize.width()+decorationMargin;
return QSize(width, height+16);
}
QPalette::ColorRole ItemDelegate::foregroundRole(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
Q_UNUSED(index)
if (option.state & QStyle::State_Selected) return QPalette::HighlightedText;
return QPalette::Text;
}
void ItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if (!index.isValid()) return;
painter->save();
QFont normalfont = option.font;
QFont boldfont = normalfont;
boldfont.setBold(true);
QString firstRow = firstLine(index);
QString secondRow = secondLine(index);
QPixmap pixmap = decoration(index);
QColor textcol = option.palette.color(foregroundRole(option, index));
// Draw the background
QStyleOptionViewItemV4 opt = option;
QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
style->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, opt.widget);
// Draw the icon
int x = option.rect.left()+(option.decorationSize.width()-pixmap.width()+decorationMargin)/2;
int y = option.rect.top()+(option.rect.height()-pixmap.height())/2;
QRect pixmapRect = QStyle::visualRect(option.direction, option.rect, QRect(x, y, pixmap.width(), pixmap.height()));
painter->drawPixmap(pixmapRect.x(), pixmapRect.y(), pixmap);
// Draw the text
QFontMetrics fm1(boldfont);
QFontMetrics fm2(normalfont);
int textAreaHeight = fm1.lineSpacing()+fm2.lineSpacing();
x = option.rect.left()+option.decorationSize.width()+decorationMargin;
int y1 = option.rect.top()+(option.rect.height()-textAreaHeight)/2;
int y2 = y1+fm1.lineSpacing();
QRect firstRowRect = QStyle::visualRect(option.direction, option.rect, QRect(x, y1, fm1.width(firstRow), fm1.lineSpacing()));
QRect secondRowRect = QStyle::visualRect(option.direction, option.rect, QRect(x, y2, fm2.width(secondRow), fm2.lineSpacing()));
painter->setPen(textcol);
// First line
painter->setFont(boldfont);
painter->drawText(firstRowRect, Qt::AlignCenter, firstRow);
// Second line
painter->setFont(normalfont);
painter->drawText(secondRowRect, Qt::AlignCenter, secondRow);
painter->restore();
}