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/***************************************************************************
* copyright : (C) 2009-2019 by Pascal Brachet *
* *
* 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. *
* *
***************************************************************************/
#include <QtGui>
#include <QAbstractItemModel>
#include <QPainter>
#include <QDebug>
#include <QTextDocument>
#include <QTreeWidgetItem>
#include <QAbstractItemDelegate>
#include "treedelegate.h"
#include "algohighlighter.h"
void TreeDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
Q_ASSERT(index.isValid());
const QAbstractItemModel *model = index.model();
Q_ASSERT(model);
QStyleOptionViewItemV4 options = option;
initStyleOption(&options, index);
painter->save();
QTextDocument doc;
AlgoHighlighter highlight(&doc);
doc.setPlainText(options.text);
doc.setDocumentMargin(0);
options.text = "";
options.widget->style()->drawControl(QStyle::CE_ItemViewItem, &options, painter);
// shift text right to make icon visible
QSize iconSize = options.icon.actualSize(options.rect.size());
painter->translate(options.rect.left()+iconSize.width()+2, options.rect.top());
QRect clip(0, 0, options.rect.width()+iconSize.width(), options.rect.height());
painter->setClipRect(clip);
if (option.showDecorationSelected && (option.state & QStyle::State_Selected)) {
QPalette::ColorGroup cg = option.state & QStyle::State_Enabled
? QPalette::Normal : QPalette::Disabled;
painter->fillRect(clip, option.palette.brush(cg, QPalette::Highlight));
//painter->fillRect(option.rect,QColor("#78A9dc"));
painter->fillRect(clip,QColor("#dde2e8"));
}
else {
QVariant value = model->data(index, Qt::BackgroundColorRole);
if (value.isValid() && qvariant_cast<QColor>(value).isValid())
painter->fillRect(clip, qvariant_cast<QColor>(value));
}
// doc.drawContents(painter,clip);
QAbstractTextDocumentLayout::PaintContext ctx;
// set text color to red for selected item
// if (option.state & QStyle::State_Selected) qDebug() << "sel";
// ctx.palette.setColor(QPalette::Text, QColor("white"));
ctx.clip = clip;
doc.documentLayout()->draw(painter, ctx);
painter->restore();
}
QSize TreeDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
QStyleOptionViewItemV4 options = option;
initStyleOption(&options, index);
QTextDocument doc;
QFont ft=options.font;
ft.setBold(true);
doc.setPlainText(options.text);
QFontMetrics fontMetrics(ft);
return QSize(fontMetrics.width(options.text)+2,fontMetrics.lineSpacing()+2);
}
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