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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 "baseannotationhighlighter.h"
#include <texteditor/fontsettings.h>
#include <texteditor/texteditorsettings.h>
#include <utils/algorithm.h>
#include <QDebug>
#include <QColor>
#include <QTextDocument>
#include <QTextCharFormat>
typedef QMap<QString, QTextCharFormat> ChangeNumberFormatMap;
/*!
\class VcsBase::BaseAnnotationHighlighter
\brief The BaseAnnotationHighlighter class is the base class for a
highlighter for annotation lines of the form 'changenumber:XXXX'.
The change numbers are assigned a color gradient. Example:
\code
112: text1 <color 1>
113: text2 <color 2>
112: text3 <color 1>
\endcode
*/
namespace VcsBase {
class BaseAnnotationHighlighterPrivate
{
public:
BaseAnnotationHighlighterPrivate(BaseAnnotationHighlighter *q_) : q(q_) { }
void updateOtherFormats();
ChangeNumberFormatMap m_changeNumberMap;
QColor m_background;
BaseAnnotationHighlighter *const q;
};
void BaseAnnotationHighlighterPrivate::updateOtherFormats()
{
m_background = q->fontSettings()
.toTextCharFormat(TextEditor::C_TEXT)
.brushProperty(QTextFormat::BackgroundBrush)
.color();
q->setChangeNumbers(Utils::toSet(m_changeNumberMap.keys()));
}
BaseAnnotationHighlighter::BaseAnnotationHighlighter(const ChangeNumbers &changeNumbers,
QTextDocument *document) :
TextEditor::SyntaxHighlighter(document),
d(new BaseAnnotationHighlighterPrivate(this))
{
setDefaultTextFormatCategories();
d->updateOtherFormats();
setChangeNumbers(changeNumbers);
}
BaseAnnotationHighlighter::~BaseAnnotationHighlighter()
{
delete d;
}
void BaseAnnotationHighlighter::setChangeNumbers(const ChangeNumbers &changeNumbers)
{
d->m_changeNumberMap.clear();
const int changeNumberCount = changeNumbers.size();
if (changeNumberCount == 0)
return;
// Assign a color gradient to annotation change numbers. Give
// each change number a unique color.
const QList<QColor> colors =
TextEditor::SyntaxHighlighter::generateColors(changeNumberCount, d->m_background);
int m = 0;
const int cstep = colors.count() / changeNumberCount;
const ChangeNumbers::const_iterator cend = changeNumbers.constEnd();
for (ChangeNumbers::const_iterator it = changeNumbers.constBegin(); it != cend; ++it) {
QTextCharFormat format;
format.setForeground(colors.at(m));
d->m_changeNumberMap.insert(*it, format);
m += cstep;
}
}
void BaseAnnotationHighlighter::highlightBlock(const QString &text)
{
if (text.isEmpty() || d->m_changeNumberMap.empty())
return;
const QString change = changeNumber(text);
const ChangeNumberFormatMap::const_iterator it = d->m_changeNumberMap.constFind(change);
if (it != d->m_changeNumberMap.constEnd())
setFormatWithSpaces(text, 0, text.length(), it.value());
}
void BaseAnnotationHighlighter::setFontSettings(const TextEditor::FontSettings &fontSettings)
{
SyntaxHighlighter::setFontSettings(fontSettings);
d->updateOtherFormats();
}
} // namespace VcsBase
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