Add new file

tab_docs.cpp

+#include <QtWidgets>
+#include <QtXml>
+#include "tab_docs.h"
+
+doc_tab_class::doc_tab_class(QWidget* p_parent) : QPlainTextEdit(p_parent),
+  _fDirectory(""),
+  _changed(false)
+{
+
+    connect(this, &doc_tab_class::textChanged, this, &doc_tab_class::sltDocChanged);
+
+    lineNumberArea = new LineNumberArea(this);
+
+    connect(this, &doc_tab_class::blockCountChanged, this, &doc_tab_class::updateLineNumberAreaWidth);
+    connect(this, &doc_tab_class::updateRequest, this, &doc_tab_class::updateLineNumberArea);
+    connect(this, &doc_tab_class::cursorPositionChanged, this, &doc_tab_class::highlightCurrentLine);
+
+    updateLineNumberAreaWidth(0);
+
+    lineNumberArea->hide();
+
+}
+
+
+QString doc_tab_class::sltLoad()
+{
+    _fDirectory = QFileDialog::getOpenFileName();
+
+    if (_fDirectory.isEmpty())
+        return "";
+
+    return sltLoad(_fDirectory);
+}
+
+void doc_tab_class::linesHelp()
+{
+    lineNumberArea->show();
+}
+
+QString doc_tab_class::sltLoad(const QString& p_fDirectory)
+{
+    _fDirectory = p_fDirectory;
+    QStringList list = p_fDirectory.split("/");
+    _fName = list.last();
+
+    list.clear();
+
+    list = _fName.split(".");
+    _fExtension = list.last();
+
+
+
+    QFile file(p_fDirectory);
+
+    if (file.open(QIODevice::ReadOnly))
+    {
+        QTextStream stream(&file);
+
+        disconnect(this, &doc_tab_class::textChanged, this, &doc_tab_class::sltDocChanged);
+        setPlainText(stream.readAll());
+        connect(this, &doc_tab_class::textChanged, this, &doc_tab_class::sltDocChanged);
+
+        qDebug() << _fName;
+        emit changeWidTitle("", "");
+
+        return _fName;
+    }
+    lineNumberArea->show();
+    return "";
+}
+
+void doc_tab_class::sltIsCodeDoc()
+{
+    lineNumberArea->show();
+    highlightCurrentLine();
+
+    sltLoadHighlight();
+}
+
+void doc_tab_class::sltSave()
+{
+    if (_fDirectory.isEmpty())
+    {
+        sltSaveAs(_fName);
+        return;
+    }
+
+    QFile file(_fDirectory);
+    if(file.open(QIODevice::WriteOnly))
+    {
+        QTextStream(&file) << toPlainText();
+        file.close();
+
+        connect(this, &doc_tab_class::textChanged, this, &doc_tab_class::sltDocChanged);
+
+        emit changeWidTitle("", "");
+    }
+
+    _changed = false;
+}
+
+void doc_tab_class::sltSaveAs(const QString& p_tip)
+{
+    QString newFileName = QFileDialog::getSaveFileName(0, _fDirectory, p_tip);
+    if (!newFileName.isEmpty())
+    {
+        QString lastFileName = _fName;
+        QString lastFileDirectory = _fDirectory;
+
+        _fDirectory = newFileName;
+        QStringList list = _fDirectory.split("/");
+        _fName = list.last();
+
+        list.clear();
+
+        list = _fName.split(".");
+        _fExtension = list.last();
+        emit changeWidTitle(lastFileName, lastFileDirectory);
+        sltSave();
+    }
+}
+
+void doc_tab_class::sltLoadHighlight()
+{
+    _highlighter = new Lighter_class(this->document(), _fExtension);
+    QString _styleFName = ":/hLIni/highlightTest.xml";
+
+    QFile styleFile(_styleFName);
+    QXmlInputSource src(&styleFile);
+    QXmlSimpleReader reader;
+
+    reader.setContentHandler(_highlighter);
+
+    qDebug() << "Ready to parse...";
+    reader.parse(src);
+
+}
+
+void doc_tab_class::sltDocChanged()
+{
+    qDebug() << "Doc " << _fDirectory << " changed!";
+    _changed = true;
+    disconnect(this, &doc_tab_class::textChanged, this, &doc_tab_class::sltDocChanged);
+    emit fileChanded(_fName);
+}
+
+
+void doc_tab_class::sltSetChanged(bool p_was)
+{
+    _changed = p_was;
+}
+
+
+int doc_tab_class::lineNumberAreaWidth()
+{
+    int digits = 1;
+    int max = qMax(1, blockCount());
+    while (max >= 10) {
+        max /= 10;
+        ++digits;
+    }
+
+    int space = 3 + fontMetrics().horizontalAdvance(QLatin1Char('9')) * digits;
+
+    return space;
+}
+
+
+
+void doc_tab_class::updateLineNumberAreaWidth(int)
+{
+    setViewportMargins(lineNumberAreaWidth(), 0, 0, 0);
+}
+
+
+void doc_tab_class::updateLineNumberArea(const QRect &rect, int dy)
+{
+    if (dy)
+        lineNumberArea->scroll(0, dy);
+    else
+        lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
+
+    if (rect.contains(viewport()->rect()))
+        updateLineNumberAreaWidth(0);
+}
+
+void doc_tab_class::resizeEvent(QResizeEvent *e)
+{
+    QPlainTextEdit::resizeEvent(e);
+
+    QRect cr = contentsRect();
+    lineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height()));
+}
+
+void doc_tab_class::highlightCurrentLine()
+{
+    QList<QTextEdit::ExtraSelection> extraSelections;
+
+    if (!isReadOnly())
+    {
+        QTextEdit::ExtraSelection selection;
+
+        QColor lineColor = QColor(Qt::yellow).lighter(160);
+
+        selection.format.setBackground(lineColor);
+        selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+        selection.cursor = textCursor();
+        selection.cursor.clearSelection();
+        extraSelections.append(selection);
+    }
+
+    setExtraSelections(extraSelections);
+}
+
+
+void doc_tab_class::linePaintEvent(QPaintEvent *event)
+{
+    QPainter painter(lineNumberArea);
+    painter.fillRect(event->rect(), Qt::lightGray);
+
+    QTextBlock block = firstVisibleBlock();
+    int blockNumber = block.blockNumber();
+    int top = qRound(blockBoundingGeometry(block).translated(contentOffset()).top());
+    int bottom = top + qRound(blockBoundingRect(block).height());
+
+
+    while (block.isValid() && top <= event->rect().bottom())
+    {
+        if (block.isVisible() && bottom >= event->rect().top())
+        {
+            QString number = QString::number(blockNumber + 1);
+            painter.setPen(Qt::black);
+            painter.drawText(0, top, lineNumberArea->width(), fontMetrics().height(), Qt::AlignRight, number);
+                }
+
+                block = block.next();
+                top = bottom;
+                bottom = top + qRound(blockBoundingRect(block).height());
+                ++blockNumber;
+   }
+}
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