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/********************************************************************
* Copyright (C) 2010 - 2016 ArcEye <arceye AT mgware DOT co DOT uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
********************************************************************/
#ifndef _QGCODE_EDITOR_
#define _QGCODE_EDITOR_
#include <QObject>
#include <QPlainTextEdit>
#include <QAction>
#include <QMenu>
#include <QDebug>
#include <QTextBlock>
class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;
class LineNumberArea;
// editor can only judge size by lines, has no concept of file size
// render initial 200 lines
#define CHUNK_SIZE 200
// add in 100 lines dynamically
#define ADD_SIZE 100
class Q_DECL_EXPORT QGCodeEditor : public QPlainTextEdit
{
Q_OBJECT
public:
QGCodeEditor(QWidget *parent = 0);
virtual ~QGCodeEditor();
QString getCurrentText();
QString formatLine(QString);
int firstBlockNum() const{return ( (int) (QPlainTextEdit::firstVisibleBlock()).blockNumber() ); }
void lineNumberAreaPaintEvent(QPaintEvent *event);
int lineNumberAreaWidth();
int getLineNo();
int getLineCount();
void cursorUp();
void cursorDown();
void highlightLine(int);
void appendNewPlainText(const QString &);
void clear();
bool isModified();
protected:
void resizeEvent(QResizeEvent *event);
private slots:
virtual void updateLineNumberAreaWidth(int newBlockCount);
virtual void highlightCurrentLine();
virtual void updateLineNumberArea(const QRect &, int);
virtual void loadNextChunk();
private:
QWidget *lineNumberArea;
bool bMoreBig, bBigFile;
int linesIn;
QStringList *excess;
QStringList *contents;
};
class LineNumberArea : public QWidget
{
public:
LineNumberArea(QGCodeEditor *editor) : QWidget(editor) {
codeEditor = editor;
}
QSize sizeHint() const {
return QSize(codeEditor->lineNumberAreaWidth(), 0);
}
protected:
void paintEvent(QPaintEvent *event) {
codeEditor->lineNumberAreaPaintEvent(event);
}
private:
QGCodeEditor *codeEditor;
};
#endif