1 files changed, 102 insertions, 0 deletions
diff --git a/src/plugins/vcsbase/baseannotationhighlighter.cpp b/src/plugins/vcsbase/baseannotationhighlighter.cpp
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+++ b/src/plugins/vcsbase/baseannotationhighlighter.cpp
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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#include "baseannotationhighlighter.h"
+
+#include <math.h>
+#include <QtCore/QSet>
+#include <QtCore/QDebug>
+#include <QtGui/QColor>
+#include <QtGui/QTextDocument>
+#include <QtGui/QTextEdit>
+#include <QtGui/QTextCharFormat>
+
+typedef QMap<QString, QTextCharFormat> ChangeNumberFormatMap;
+
+namespace VCSBase {
+
+struct BaseAnnotationHighlighterPrivate {
+    ChangeNumberFormatMap m_changeNumberMap;
+};
+
+BaseAnnotationHighlighter::BaseAnnotationHighlighter(const ChangeNumbers &changeNumbers,
+                                             QTextDocument *document) :
+    QSyntaxHighlighter(document),
+    m_d(new BaseAnnotationHighlighterPrivate)
+{
+    setChangeNumbers(changeNumbers);
+}
+
+BaseAnnotationHighlighter::~BaseAnnotationHighlighter()
+{
+    delete m_d;
+}
+
+void BaseAnnotationHighlighter::setChangeNumbers(const ChangeNumbers &changeNumbers)
+{
+    m_d->m_changeNumberMap.clear();
+    if (!changeNumbers.isEmpty()) {
+        // Assign a color gradient to annotation change numbers. Give
+        // each change number a unique color.
+        const double oneThird = 1.0 / 3.0;
+        const int step = qRound(ceil(pow(changeNumbers.count(), oneThird)));
+        QList<QColor> colors;
+        const int factor = 255 / step;
+        for (int i=0; i<step; ++i)
+            for (int j=0; j<step; ++j)
+                for (int k=0; k<step; ++k)
+                    colors.append(QColor(i*factor, j*factor, k*factor));
+
+        int m = 0;
+        const int cstep = colors.count() / changeNumbers.count();
+        const ChangeNumbers::const_iterator cend = changeNumbers.constEnd();
+        for (ChangeNumbers::const_iterator it =  changeNumbers.constBegin(); it != cend; ++it) {
+            QTextCharFormat format;
+            format.setForeground(colors.at(m));
+            m_d->m_changeNumberMap.insert(*it, format);
+            m += cstep;
+        }
+    }
+}
+
+void BaseAnnotationHighlighter::highlightBlock(const QString &text)
+{
+    if (text.isEmpty() || m_d->m_changeNumberMap.empty())
+        return;
+    const QString change = changeNumber(text);
+    const ChangeNumberFormatMap::const_iterator it = m_d->m_changeNumberMap.constFind(change);
+    if (it != m_d->m_changeNumberMap.constEnd())
+        setFormat(0, text.length(), it.value());
+}
+
+}
+