forked from qt-creator/qt-creator
cf57965ebc
Pass the mapping from custom enum to text style in form of a function, which then can use a switch which is checked by compilers, and avoids the need to lookup a different enum somewhere else to find out what the mapping actually is. That mapping is cached to keep performance as before. Also, most highlighters created an enum just for the purpose of mapping to text styles, basically creating duplicated subsets of text style like enums everywhere. Instead provide a default, identity mapping from text styles to text styles. Change-Id: I2ea1ca702b99e36b8742dfda510b1b2753f0a1c2 Reviewed-by: David Schulz <david.schulz@qt.io>
124 lines
4.1 KiB
C++
124 lines
4.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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****************************************************************************/
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#include "baseannotationhighlighter.h"
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#include <texteditor/fontsettings.h>
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#include <QDebug>
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#include <QColor>
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#include <QTextDocument>
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#include <QTextCharFormat>
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typedef QMap<QString, QTextCharFormat> ChangeNumberFormatMap;
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/*!
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\class VcsBase::BaseAnnotationHighlighter
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\brief The BaseAnnotationHighlighter class is the base class for a
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highlighter for annotation lines of the form 'changenumber:XXXX'.
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The change numbers are assigned a color gradient. Example:
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\code
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112: text1 <color 1>
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113: text2 <color 2>
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112: text3 <color 1>
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\endcode
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*/
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namespace VcsBase {
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class BaseAnnotationHighlighterPrivate
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{
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public:
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BaseAnnotationHighlighterPrivate(BaseAnnotationHighlighter *q_) : q(q_) { }
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void updateOtherFormats();
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ChangeNumberFormatMap m_changeNumberMap;
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QColor m_background;
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BaseAnnotationHighlighter *const q;
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};
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void BaseAnnotationHighlighterPrivate::updateOtherFormats()
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{
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m_background = q->formatForCategory(TextEditor::C_TEXT)
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.brushProperty(QTextFormat::BackgroundBrush).color();
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q->setChangeNumbers(m_changeNumberMap.keys().toSet());
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}
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BaseAnnotationHighlighter::BaseAnnotationHighlighter(const ChangeNumbers &changeNumbers,
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QTextDocument *document) :
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TextEditor::SyntaxHighlighter(document),
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d(new BaseAnnotationHighlighterPrivate(this))
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{
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setDefaultTextFormatCategories();
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d->updateOtherFormats();
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setChangeNumbers(changeNumbers);
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}
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BaseAnnotationHighlighter::~BaseAnnotationHighlighter()
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{
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delete d;
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}
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void BaseAnnotationHighlighter::setChangeNumbers(const ChangeNumbers &changeNumbers)
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{
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d->m_changeNumberMap.clear();
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if (!changeNumbers.isEmpty()) {
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// Assign a color gradient to annotation change numbers. Give
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// each change number a unique color.
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const QList<QColor> colors =
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TextEditor::SyntaxHighlighter::generateColors(changeNumbers.size(), d->m_background);
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int m = 0;
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const int cstep = colors.count() / changeNumbers.count();
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const ChangeNumbers::const_iterator cend = changeNumbers.constEnd();
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for (ChangeNumbers::const_iterator it = changeNumbers.constBegin(); it != cend; ++it) {
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QTextCharFormat format;
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format.setForeground(colors.at(m));
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d->m_changeNumberMap.insert(*it, format);
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m += cstep;
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}
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}
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}
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void BaseAnnotationHighlighter::highlightBlock(const QString &text)
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{
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if (text.isEmpty() || d->m_changeNumberMap.empty())
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return;
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const QString change = changeNumber(text);
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const ChangeNumberFormatMap::const_iterator it = d->m_changeNumberMap.constFind(change);
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if (it != d->m_changeNumberMap.constEnd())
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setFormat(0, text.length(), it.value());
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}
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void BaseAnnotationHighlighter::setFontSettings(const TextEditor::FontSettings &fontSettings)
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{
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SyntaxHighlighter::setFontSettings(fontSettings);
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d->updateOtherFormats();
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}
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} // namespace VcsBase
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