CodeEditor.h

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/****************************************************************************
This file is a combination of two example programs included in the Qt Toolkit.
A few modifications have been added, but the majority of the code is from Qt's
demo programs
****************************************************************************/
#ifndef QT_MODIEIFED_DEMO_COMPLETER_AND_CODEEDITOR_H
#define QT_MODIEIFED_DEMO_COMPLETER_AND_CODEEDITOR_H

#include <QPlainTextEdit>
#include <QDialog>
#include <QLineEdit>
#include <QCompleter>
#include <QKeyEvent>
#include <QAbstractItemView>

class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;

#ifndef TINKERCELLCOREEXPORT
#ifdef Q_WS_WIN
#   if defined(TC_EXPORTS) || defined(TinkerCellCore_EXPORTS)
#       define TINKERCELLCOREEXPORT __declspec(dllexport)
#   else
#       define TINKERCELLCOREEXPORT __declspec(dllimport)
#   endif
#else
#    define TINKERCELLCOREEXPORT
#endif
#endif

namespace Tinkercell
{

        class LineNumberArea;

        class TINKERCELLCOREEXPORT CodeEditor : public QPlainTextEdit
        {
                Q_OBJECT

        public:
                CodeEditor(QWidget *parent = 0);

                void lineNumberAreaPaintEvent(QPaintEvent *event);
                int lineNumberAreaWidth();

                void setCompleter(QCompleter *c);
                QCompleter *completer() const;

                void zoomIn(int r = 1);
                void zoomOut(int r = 1);
                QString text() const;

                QWidget *lineNumberArea;

                QColor lineHighlightColor;
                QColor lineNumberBackground;
                QColor lineNumberText;
        
        public slots:
                void setText(const QString&);
                void showFindReplaceDialog();
                bool find(const QString&);
                bool replace(const QString&,const QString&);

        protected:
                void resizeEvent(QResizeEvent *event);
                virtual void wheelEvent ( QWheelEvent * wheelEvent );
                void keyPressEvent(QKeyEvent *e);
                void focusInEvent(QFocusEvent *e);

        private slots:
                void updateLineNumberAreaWidth(int newBlockCount);
                void highlightCurrentLine();
                void updateLineNumberArea(const QRect &, int);
                void insertCompletion(const QString &completion);
                void find();
                void replace();

        private:
                QString textUnderCursor() const;
                QDialog * findReplaceDialog;
                QLineEdit * findLineEdit;
                QLineEdit * replaceLineEdit;
                QCompleter *c;

        };


        class TINKERCELLCOREEXPORT LineNumberArea : public QWidget
        {
        public:

                LineNumberArea(CodeEditor *editor) : QWidget(editor)
                {
                        codeEditor = editor;
                }

                QSize sizeHint() const 
                {
                        return QSize(codeEditor->lineNumberAreaWidth(), 0);
                }

        protected:
                void paintEvent(QPaintEvent *event) {
                        codeEditor->lineNumberAreaPaintEvent(event);
                }

        private:
                CodeEditor * codeEditor;
        };

}

#endif