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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "searchresulttreeitemdelegate.h"
#include "searchresulttreeitemroles.h"
#include <QTextDocument>
#include <QPainter>
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QModelIndex>
#include <QDebug>
#include <math.h>
using namespace Find::Internal;
SearchResultTreeItemDelegate::SearchResultTreeItemDelegate(QObject *parent)
: QItemDelegate(parent)
{
}
void SearchResultTreeItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
static const int iconSize = 16;
painter->save();
QStyleOptionViewItemV3 opt = setOptions(index, option);
painter->setFont(opt.font);
QItemDelegate::drawBackground(painter, opt, index);
// ---- do the layout
QRect checkRect;
QRect pixmapRect;
QRect textRect;
// check mark
bool checkable = (index.model()->flags(index) & Qt::ItemIsUserCheckable);
Qt::CheckState checkState = Qt::Unchecked;
if (checkable) {
QVariant checkStateData = index.data(Qt::CheckStateRole);
checkState = static_cast<Qt::CheckState>(checkStateData.toInt());
#if QT_VERSION >= 0x050000
checkRect = doCheck(opt, opt.rect, checkStateData);
#else // Qt4
checkRect = check(opt, opt.rect, checkStateData);
#endif
}
// icon
QIcon icon = index.model()->data(index, ItemDataRoles::ResultIconRole).value<QIcon>();
if (!icon.isNull()) {
pixmapRect = QRect(0, 0, iconSize, iconSize);
}
// text
textRect = opt.rect.adjusted(0, 0, checkRect.width() + pixmapRect.width(), 0);
// do layout
doLayout(opt, &checkRect, &pixmapRect, &textRect, false);
// ---- draw the items
// icon
if (!icon.isNull())
QItemDelegate::drawDecoration(painter, opt, pixmapRect, icon.pixmap(iconSize));
// line numbers
int lineNumberAreaWidth = drawLineNumber(painter, opt, textRect, index);
textRect.adjust(lineNumberAreaWidth, 0, 0, 0);
// selected text
QString displayString = index.model()->data(index, Qt::DisplayRole).toString();
drawMarker(painter, index, displayString, textRect);
// show number of subresults in displayString
if (index.model()->hasChildren(index)) {
displayString += QString::fromLatin1(" (")
+ QString::number(index.model()->rowCount(index))
+ QLatin1Char(')');
}
// text and focus/selection
QItemDelegate::drawDisplay(painter, opt, textRect, displayString);
QItemDelegate::drawFocus(painter, opt, opt.rect);
// check mark
if (checkable)
QItemDelegate::drawCheck(painter, opt, checkRect, checkState);
painter->restore();
}
// returns the width of the line number area
int SearchResultTreeItemDelegate::drawLineNumber(QPainter *painter, const QStyleOptionViewItemV3 &option,
const QRect &rect,
const QModelIndex &index) const
{
static const int lineNumberAreaHorizontalPadding = 4;
int lineNumber = index.model()->data(index, ItemDataRoles::ResultLineNumberRole).toInt();
if (lineNumber < 1)
return 0;
const bool isSelected = option.state & QStyle::State_Selected;
QString lineText = QString::number(lineNumber);
int minimumLineNumberDigits = qMax((int)m_minimumLineNumberDigits, lineText.count());
int fontWidth = painter->fontMetrics().width(QString(minimumLineNumberDigits, QLatin1Char('0')));
int lineNumberAreaWidth = lineNumberAreaHorizontalPadding + fontWidth + lineNumberAreaHorizontalPadding;
QRect lineNumberAreaRect(rect);
lineNumberAreaRect.setWidth(lineNumberAreaWidth);
QPalette::ColorGroup cg = QPalette::Normal;
if (!(option.state & QStyle::State_Active))
cg = QPalette::Inactive;
else if (!(option.state & QStyle::State_Enabled))
cg = QPalette::Disabled;
painter->fillRect(lineNumberAreaRect, QBrush(isSelected ?
option.palette.brush(cg, QPalette::Highlight) :
option.palette.color(cg, QPalette::Base).darker(111)));
QStyleOptionViewItemV3 opt = option;
opt.displayAlignment = Qt::AlignRight | Qt::AlignVCenter;
opt.palette.setColor(cg, QPalette::Text, Qt::darkGray);
const QStyle *style = QApplication::style();
const int textMargin = style->pixelMetric(QStyle::PM_FocusFrameHMargin, 0, 0) + 1;
const QRect rowRect = lineNumberAreaRect.adjusted(-textMargin, 0, textMargin-lineNumberAreaHorizontalPadding, 0);
QItemDelegate::drawDisplay(painter, opt, rowRect, lineText);
return lineNumberAreaWidth;
}
void SearchResultTreeItemDelegate::drawMarker(QPainter *painter, const QModelIndex &index, const QString text,
const QRect &rect) const
{
int searchTermStart = index.model()->data(index, ItemDataRoles::SearchTermStartRole).toInt();
int searchTermLength = index.model()->data(index, ItemDataRoles::SearchTermLengthRole).toInt();
if (searchTermStart < 0 || searchTermStart >= text.length() || searchTermLength < 1)
return;
// clip searchTermLength to end of line
searchTermLength = qMin(searchTermLength, text.length() - searchTermStart);
const int textMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1;
int searchTermStartPixels = painter->fontMetrics().width(text.left(searchTermStart));
int searchTermLengthPixels = painter->fontMetrics().width(text.mid(searchTermStart, searchTermLength));
QRect resultHighlightRect(rect);
resultHighlightRect.setLeft(resultHighlightRect.left() + searchTermStartPixels + textMargin - 1); // -1: Cosmetics
resultHighlightRect.setRight(resultHighlightRect.left() + searchTermLengthPixels + 1); // +1: Cosmetics
painter->fillRect(resultHighlightRect, QBrush(qRgb(255, 240, 120)));
}
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