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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
**
**************************************************************************/
#ifndef BASETEXTDOCUMENTLAYOUT_H
#define BASETEXTDOCUMENTLAYOUT_H
#include "texteditor_global.h"
#include "itexteditor.h"
#include <QtGui/QTextBlockUserData>
#include <QtGui/QPlainTextDocumentLayout>
namespace TextEditor {
struct Parenthesis;
typedef QVector<Parenthesis> Parentheses;
struct TEXTEDITOR_EXPORT Parenthesis
{
enum Type { Opened, Closed };
inline Parenthesis() : type(Opened), pos(-1) {}
inline Parenthesis(Type t, QChar c, int position)
: type(t), chr(c), pos(position) {}
Type type;
QChar chr;
int pos;
};
class TEXTEDITOR_EXPORT CodeFormatterData
{
public:
virtual ~CodeFormatterData();
};
class TEXTEDITOR_EXPORT TextBlockUserData : public QTextBlockUserData
{
public:
inline TextBlockUserData()
: m_folded(false),
m_ifdefedOut(false),
m_foldingIndent(0),
m_lexerState(0),
m_foldingStartIncluded(false),
m_foldingEndIncluded(false),
m_codeFormatterData(0)
{}
~TextBlockUserData();
inline TextMarks marks() const { return m_marks; }
void addMark(ITextMark *mark);
inline bool removeMark(ITextMark *mark) { return m_marks.removeAll(mark); }
inline bool hasMark(ITextMark *mark) const { return m_marks.contains(mark); }
inline void clearMarks() { m_marks.clear(); }
inline void documentClosing() { Q_FOREACH(ITextMark *tm, m_marks) { tm->documentClosing(); } m_marks.clear();}
inline void setFolded(bool b) { m_folded = b; }
inline bool folded() const { return m_folded; }
inline void setParentheses(const Parentheses &parentheses) { m_parentheses = parentheses; }
inline void clearParentheses() { m_parentheses.clear(); }
inline const Parentheses &parentheses() const { return m_parentheses; }
inline bool hasParentheses() const { return !m_parentheses.isEmpty(); }
int braceDepthDelta() const;
inline bool setIfdefedOut() { bool result = m_ifdefedOut; m_ifdefedOut = true; return !result; }
inline bool clearIfdefedOut() { bool result = m_ifdefedOut; m_ifdefedOut = false; return result;}
inline bool ifdefedOut() const { return m_ifdefedOut; }
enum MatchType { NoMatch, Match, Mismatch };
static MatchType checkOpenParenthesis(QTextCursor *cursor, QChar c);
static MatchType checkClosedParenthesis(QTextCursor *cursor, QChar c);
static MatchType matchCursorBackward(QTextCursor *cursor);
static MatchType matchCursorForward(QTextCursor *cursor);
static bool findPreviousOpenParenthesis(QTextCursor *cursor, bool select = false);
static bool findNextClosingParenthesis(QTextCursor *cursor, bool select = false);
static bool findPreviousBlockOpenParenthesis(QTextCursor *cursor, bool checkStartPosition = false);
static bool findNextBlockClosingParenthesis(QTextCursor *cursor);
// Get the code folding level
inline int foldingIndent() const { return m_foldingIndent; }
/* Set the code folding level.
*
* A code folding marker will appear the line *before* the one where the indention
* level increases. The code folding reagion will end in the last line that has the same
* indention level (or higher).
*/
inline void setFoldingIndent(int indent) { m_foldingIndent = indent; }
// Set whether the first character of the folded region will show when the code is folded.
inline void setFoldingStartIncluded(bool included) { m_foldingStartIncluded = included; }
inline bool foldingStartIncluded() const { return m_foldingStartIncluded; }
// Set whether the last character of the folded region will show when the code is folded.
inline void setFoldingEndIncluded(bool included) { m_foldingEndIncluded = included; }
inline bool foldingEndIncluded() const { return m_foldingEndIncluded; }
inline int lexerState() const { return m_lexerState; }
inline void setLexerState(int state) {m_lexerState = state; }
CodeFormatterData *codeFormatterData() const { return m_codeFormatterData; }
void setCodeFormatterData(CodeFormatterData *data);
private:
TextMarks m_marks;
uint m_folded : 1;
uint m_ifdefedOut : 1;
uint m_foldingIndent : 16;
uint m_lexerState : 4;
uint m_foldingStartIncluded : 1;
uint m_foldingEndIncluded : 1;
Parentheses m_parentheses;
CodeFormatterData *m_codeFormatterData;
};
class TEXTEDITOR_EXPORT BaseTextDocumentLayout : public QPlainTextDocumentLayout
{
Q_OBJECT
public:
BaseTextDocumentLayout(QTextDocument *doc);
~BaseTextDocumentLayout();
static void setParentheses(const QTextBlock &block, const Parentheses &parentheses);
static void clearParentheses(const QTextBlock &block) { setParentheses(block, Parentheses());}
static Parentheses parentheses(const QTextBlock &block);
static bool hasParentheses(const QTextBlock &block);
static bool setIfdefedOut(const QTextBlock &block);
static bool clearIfdefedOut(const QTextBlock &block);
static bool ifdefedOut(const QTextBlock &block);
static int braceDepthDelta(const QTextBlock &block);
static int braceDepth(const QTextBlock &block);
static void setBraceDepth(QTextBlock &block, int depth);
static void changeBraceDepth(QTextBlock &block, int delta);
static void setFoldingIndent(const QTextBlock &block, int indent);
static int foldingIndent(const QTextBlock &block);
static void setLexerState(const QTextBlock &block, int state);
static int lexerState(const QTextBlock &block);
static void changeFoldingIndent(QTextBlock &block, int delta);
static bool canFold(const QTextBlock &block);
static void doFoldOrUnfold(const QTextBlock& block, bool unfold);
static bool isFolded(const QTextBlock &block);
static void setFolded(const QTextBlock &block, bool folded);
class TEXTEDITOR_EXPORT FoldValidator
{
public:
FoldValidator();
void setup(BaseTextDocumentLayout *layout);
void reset();
void process(QTextBlock block);
void finalize();
private:
BaseTextDocumentLayout *m_layout;
bool m_requestDocUpdate;
int m_insideFold;
};
static TextBlockUserData *testUserData(const QTextBlock &block) {
return static_cast<TextBlockUserData*>(block.userData());
}
static TextBlockUserData *userData(const QTextBlock &block) {
TextBlockUserData *data = static_cast<TextBlockUserData*>(block.userData());
if (!data && block.isValid())
const_cast<QTextBlock &>(block).setUserData((data = new TextBlockUserData));
return data;
}
void emitDocumentSizeChanged() { emit documentSizeChanged(documentSize()); }
int lastSaveRevision;
bool hasMarks;
double maxMarkWidthFactor;
int m_requiredWidth;
void setRequiredWidth(int width);
QSizeF documentSize() const;
};
} // namespace TextEditor
#endif // BASETEXTDOCUMENTLAYOUT_H
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