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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "searchresulttreeitemdelegate.h"
#include "searchresulttreeitemroles.h"
#include <QPainter>
#include <QApplication>
#include <QModelIndex>
#include <QDebug>
using namespace Core::Internal;
SearchResultTreeItemDelegate::SearchResultTreeItemDelegate(int tabWidth, QObject *parent)
: QItemDelegate(parent)
{
setTabWidth(tabWidth);
}
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());
checkRect = doCheck(opt, opt.rect, checkStateData);
}
// 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);
// text and focus/selection
drawText(painter, opt, textRect, index);
QItemDelegate::drawFocus(painter, opt, opt.rect);
// check mark
if (checkable)
QItemDelegate::drawCheck(painter, opt, checkRect, checkState);
painter->restore();
}
void SearchResultTreeItemDelegate::setTabWidth(int width)
{
m_tabString = QString(width, QLatin1Char(' '));
}
// 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::drawText(QPainter *painter,
const QStyleOptionViewItem &option,
const QRect &rect,
const QModelIndex &index) const
{
QString text = index.model()->data(index, Qt::DisplayRole).toString();
// show number of subresults in displayString
if (index.model()->hasChildren(index)) {
text += QLatin1String(" (")
+ QString::number(index.model()->rowCount(index))
+ QLatin1Char(')');
}
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) {
QItemDelegate::drawDisplay(painter, option, rect, text.replace(QLatin1Char('\t'), m_tabString));
return;
}
// clip searchTermLength to end of line
searchTermLength = qMin(searchTermLength, text.length() - searchTermStart);
const int textMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1;
const QString textBefore = text.left(searchTermStart).replace(QLatin1Char('\t'), m_tabString);
const QString textHighlight = text.mid(searchTermStart, searchTermLength).replace(QLatin1Char('\t'), m_tabString);
const QString textAfter = text.mid(searchTermStart + searchTermLength).replace(QLatin1Char('\t'), m_tabString);
int searchTermStartPixels = painter->fontMetrics().width(textBefore);
int searchTermLengthPixels = painter->fontMetrics().width(textHighlight);
// rects
QRect beforeHighlightRect(rect);
beforeHighlightRect.setRight(beforeHighlightRect.left() + searchTermStartPixels);
QRect resultHighlightRect(rect);
resultHighlightRect.setLeft(beforeHighlightRect.right());
resultHighlightRect.setRight(resultHighlightRect.left() + searchTermLengthPixels);
QRect afterHighlightRect(rect);
afterHighlightRect.setLeft(resultHighlightRect.right());
// paint all highlight backgrounds
// qitemdelegate has problems with painting background when highlighted
// (highlighted background at wrong position because text is offset with textMargin)
// so we duplicate a lot here, see qitemdelegate for reference
bool isSelected = option.state & QStyle::State_Selected;
QPalette::ColorGroup cg = option.state & QStyle::State_Enabled
? QPalette::Normal : QPalette::Disabled;
if (cg == QPalette::Normal && !(option.state & QStyle::State_Active))
cg = QPalette::Inactive;
QStyleOptionViewItem baseOption = option;
baseOption.state &= ~QStyle::State_Selected;
if (isSelected) {
painter->fillRect(beforeHighlightRect.adjusted(textMargin, 0, textMargin, 0),
option.palette.brush(cg, QPalette::Highlight));
painter->fillRect(afterHighlightRect.adjusted(textMargin, 0, textMargin, 0),
option.palette.brush(cg, QPalette::Highlight));
}
const QColor highlightBackground =
index.model()->data(index, ItemDataRoles::ResultHighlightBackgroundColor).value<QColor>();
painter->fillRect(resultHighlightRect.adjusted(textMargin, 0, textMargin - 1, 0), QBrush(highlightBackground));
// Text before the highlighting
QStyleOptionViewItem noHighlightOpt = baseOption;
noHighlightOpt.rect = beforeHighlightRect;
noHighlightOpt.textElideMode = Qt::ElideNone;
if (isSelected)
noHighlightOpt.palette.setColor(QPalette::Text, noHighlightOpt.palette.color(cg, QPalette::HighlightedText));
QItemDelegate::drawDisplay(painter, noHighlightOpt, beforeHighlightRect, textBefore);
// Highlight text
QStyleOptionViewItem highlightOpt = noHighlightOpt;
const QColor highlightForeground =
index.model()->data(index, ItemDataRoles::ResultHighlightForegroundColor).value<QColor>();
highlightOpt.palette.setColor(QPalette::Text, highlightForeground);
QItemDelegate::drawDisplay(painter, highlightOpt, resultHighlightRect, textHighlight);
// Text after the Highlight
noHighlightOpt.rect = afterHighlightRect;
QItemDelegate::drawDisplay(painter, noHighlightOpt, afterHighlightRect, textAfter);
}
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