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128 lines
4.0 KiB
128 lines
4.0 KiB
/* BEGIN_COMMON_COPYRIGHT_HEADER
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* (c)LGPL2+
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*
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* LXQt - a lightweight, Qt based, desktop toolset
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* http://lxqt.org
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*
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* Copyright: 2010-2011 Razor team
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* Authors:
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* Alexander Sokoloff <sokoloff.a@gmail.com>
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* Paulo Lieuthier <paulolieuthier@gmail.com>
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*
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* This program or library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* END_COMMON_COPYRIGHT_HEADER */
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#include "lxqthtmldelegate.h"
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#include <QAbstractTextDocumentLayout>
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#include <QTextDocument>
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using namespace LXQt;
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HtmlDelegate::HtmlDelegate(const QSize iconSize, QObject* parent) :
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QStyledItemDelegate(parent),
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mIconSize(iconSize)
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{
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}
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HtmlDelegate::~HtmlDelegate()
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{
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}
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/************************************************
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************************************************/
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void HtmlDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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if (!index.isValid())
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return;
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QStyleOptionViewItem options = option;
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initStyleOption(&options, index);
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const bool is_right_to_left = Qt::RightToLeft == options.direction;
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painter->save();
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QTextDocument doc;
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doc.setHtml(options.text);
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QIcon icon = options.icon;
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options.text = QString();
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options.icon = QIcon();
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// icon size
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const QSize iconSize = icon.actualSize(mIconSize);
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QRect iconRect = QRect(8, 8, iconSize.width(), iconSize.height());
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if (is_right_to_left)
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{
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iconRect.moveLeft(options.rect.left() + options.rect.right() - iconRect.x() - iconRect.width() + 1);
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}
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// set doc size
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doc.setTextWidth(options.rect.width() - iconRect.width() - 8);
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options.widget->style()->drawControl(QStyle::CE_ItemViewItem, &options, painter);
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// paint icon
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painter->translate(options.rect.left(), options.rect.top());
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icon.paint(painter, iconRect);
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if (!is_right_to_left)
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{
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// shift text right to make icon visible
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painter->translate(iconRect.right() + 8, 0);
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}
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const QRect clip(0, 0, options.rect.width() - iconRect.width() - 8, options.rect.height());
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painter->setClipRect(clip);
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// set text color to red for selected item
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QAbstractTextDocumentLayout::PaintContext ctx;
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if (option.state & QStyle::State_Selected)
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{
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QPalette::ColorGroup colorGroup = (option.state & QStyle::State_Active) ? QPalette::Active : QPalette::Inactive;
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ctx.palette.setColor(QPalette::Text, option.palette.color(colorGroup, QPalette::HighlightedText));
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}
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ctx.clip = clip;
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doc.documentLayout()->draw(painter, ctx);
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painter->restore();
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}
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/************************************************
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************************************************/
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QSize HtmlDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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QStyleOptionViewItem options = option;
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initStyleOption(&options, index);
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const QSize iconSize = options.icon.actualSize(mIconSize);
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const QRect iconRect = QRect(8, 8, iconSize.width(), iconSize.height());
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const QSize optSize = options.rect.size();
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QTextDocument doc;
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doc.setHtml(options.text);
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if (optSize.width() > 0)
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doc.setTextWidth(optSize.width() - iconRect.right() - 8);
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doc.adjustSize();
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return QSize(0 < optSize.width() ? optSize.width() : iconRect.width() + 8 + qRound(doc.size().width())
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, qMax(qRound(doc.size().height()), iconSize.height()) + 8);
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}
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