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#include "resizing-text-edit.hpp"
#include "obs-module-helper.hpp"
#include "ui-helpers.hpp"
#include <QScrollBar>
namespace advss {
ResizingPlainTextEdit::ResizingPlainTextEdit(QWidget *parent,
const int scrollAt,
const int minLines,
const int paddingLines)
: QPlainTextEdit(parent),
_scrollAt(scrollAt),
_minLines(minLines),
_paddingLines(paddingLines)
{
setWordWrapMode(QTextOption::NoWrap);
QWidget::connect(this, SIGNAL(textChanged()), this,
SLOT(ResizeTexteditArea()));
QWidget::connect(this, SIGNAL(textChanged()), this,
SLOT(PreventExceedingMaxLength()));
verticalScrollBar()->installEventFilter(this);
}
int ResizingPlainTextEdit::maxLength()
{
return _maxLength;
}
void ResizingPlainTextEdit::setMaxLength(int maxLength)
{
_maxLength = maxLength;
}
bool ResizingPlainTextEdit::eventFilter(QObject *obj, QEvent *event)
{
if (obj == horizontalScrollBar()) {
if (event->type() == QEvent::Show) {
AddHeightForScrollBar(true);
} else if (event->type() == QEvent::Hide) {
AddHeightForScrollBar(false);
}
}
return QPlainTextEdit::eventFilter(obj, event);
}
void ResizingPlainTextEdit::ResizeTexteditArea()
{
QFontMetrics f(font());
int rowHeight = f.lineSpacing();
int numLines = document()->blockCount();
int height = 0;
if (numLines + _paddingLines < _minLines) {
height = _minLines * rowHeight;
} else if (numLines + _paddingLines < _scrollAt) {
height = (numLines + _paddingLines) * rowHeight;
} else {
height = _scrollAt * rowHeight;
}
setFixedHeight(height + _hScrollBarAddedHeight);
adjustSize();
updateGeometry();
}
void ResizingPlainTextEdit::PreventExceedingMaxLength()
{
auto plainText = QPlainTextEdit::toPlainText();
if (_maxLength > -1 && plainText.length() > _maxLength) {
QPlainTextEdit::setPlainText(plainText.left(_maxLength));
QPlainTextEdit::moveCursor(QTextCursor::End);
DisplayMessage(
QString(obs_module_text(
"AdvSceneSwitcher.validation.text.maxLength"))
.arg(QString::number(_maxLength)));
}
}
void ResizingPlainTextEdit::AddHeightForScrollBar(bool addHeight)
{
if (!addHeight) {
setFixedHeight(height() - _hScrollBarAddedHeight);
_hScrollBarAddedHeight = 0;
return;
}
// Check if we have already added space for the scroll bar
if (_hScrollBarAddedHeight > 0) {
return;
}
_hScrollBarAddedHeight = horizontalScrollBar()->height();
setFixedHeight(height() + _hScrollBarAddedHeight);
}
} // namespace advss
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