gui2::ImportTextView Class Reference

Text view to show imported data. More...

Inheritance diagram for gui2::ImportTextView:

Collaboration diagram for gui2::ImportTextView:

Public Member Functions
	ImportTextView (QWidget *parent=nullptr)
void	lineNumberAreaPaintEvent (QPaintEvent *event)
int	lineNumberAreaWidth ()

Protected Member Functions
void	resizeEvent (QResizeEvent *event) override

Private Slots
void	highlightCurrentLine ()
void	updateLineNumberArea (const QRect &rect, int dy)
void	updateLineNumberAreaWidth (int newBlockCount)

Private Attributes
QWidget *	lineNumberArea

Detailed Description

Text view to show imported data.

Definition at line 36 of file importtextview.h.

Constructor & Destructor Documentation

ImportTextView()

gui2::ImportTextView::ImportTextView

(

QWidget *

parent = nullptr

)

Definition at line 30 of file importtextview.cpp.

                                              : QPlainTextEdit(parent)
{
    lineNumberArea = new LineNumberArea(this);
 
    connect(this, &ImportTextView::blockCountChanged, this,
            &ImportTextView::updateLineNumberAreaWidth);
    connect(this, &ImportTextView::updateRequest, this, &ImportTextView::updateLineNumberArea);
    connect(this, &ImportTextView::cursorPositionChanged, this,
            &ImportTextView::highlightCurrentLine);
 
    updateLineNumberAreaWidth(0);
    //    highlightCurrentLine();
 
    setReadOnly(true);
    setWordWrapMode(QTextOption::NoWrap);
 
    setFont(QFont("Monospace", ModelView::Utils::SystemPointSize() * 0.8, QFont::Light));
}

References highlightCurrentLine(), lineNumberArea, ModelView::Utils::SystemPointSize(), updateLineNumberArea(), and updateLineNumberAreaWidth().

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Member Function Documentation

highlightCurrentLine

void gui2::ImportTextView::highlightCurrentLine ( )

privateslot

Definition at line 87 of file importtextview.cpp.

{
    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);
}

Referenced by ImportTextView().

lineNumberAreaPaintEvent()

void gui2::ImportTextView::lineNumberAreaPaintEvent

(

QPaintEvent *

event

)

Definition at line 106 of file importtextview.cpp.

{
    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() - line_number_gap,
                             fontMetrics().height(), Qt::AlignRight, number);
        }
 
        block = block.next();
        top = bottom;
        bottom = top + qRound(blockBoundingRect(block).height());
        ++blockNumber;
    }
}

References lineNumberArea.

lineNumberAreaWidth()

int gui2::ImportTextView::lineNumberAreaWidth

(

)

Definition at line 49 of file importtextview.cpp.

{
    int digits = 1;
    int max = qMax(1, blockCount());
    while (max >= 10) {
        max /= 10;
        ++digits;
    }
 
    int space = line_number_gap * 2 + fontMetrics().horizontalAdvance(QLatin1Char('9')) * digits;
 
    return space;
}

Referenced by resizeEvent(), and updateLineNumberAreaWidth().

resizeEvent()

void gui2::ImportTextView::resizeEvent ( QResizeEvent *  event )

overrideprotected

Definition at line 79 of file importtextview.cpp.

{
    QPlainTextEdit::resizeEvent(e);
 
    QRect cr = contentsRect();
    lineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height()));
}

References lineNumberArea, and lineNumberAreaWidth().

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updateLineNumberArea

void gui2::ImportTextView::updateLineNumberArea ( const QRect &  rect, int  dy  )

privateslot

Definition at line 68 of file importtextview.cpp.

{
    if (dy)
        lineNumberArea->scroll(0, dy);
    else
        lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
 
    if (rect.contains(viewport()->rect()))
        updateLineNumberAreaWidth(0);
}

References lineNumberArea, and updateLineNumberAreaWidth().

Referenced by ImportTextView().

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updateLineNumberAreaWidth

void gui2::ImportTextView::updateLineNumberAreaWidth ( int  newBlockCount )

privateslot

Definition at line 63 of file importtextview.cpp.

{
    setViewportMargins(lineNumberAreaWidth(), 0, 0, 0);
}

References lineNumberAreaWidth().

Referenced by ImportTextView(), and updateLineNumberArea().

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Member Data Documentation

lineNumberArea

QWidget* gui2::ImportTextView::lineNumberArea

private

Definition at line 54 of file importtextview.h.

Referenced by ImportTextView(), lineNumberAreaPaintEvent(), resizeEvent(), and updateLineNumberArea().

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The documentation for this class was generated from the following files:

• /home/www/ba/gui2/dataloader/importtextview.h
• /home/www/ba/gui2/dataloader/importtextview.cpp