#include <QLineEdit>
#include <QObject>
#include <QString>
+#include <QPainter>
+#include <QResizeEvent>
#include <memory>
#include <string>
+class CustomLineEdit : public QLineEdit
+{
+public:
+ CustomLineEdit( QWidget* theParent, const QString& thePlaceHolder )
+ : QLineEdit( theParent ), myPlaceHolder( thePlaceHolder )
+ {
+ }
+
+ virtual ~CustomLineEdit()
+ {
+ }
+
+ virtual void paintEvent( QPaintEvent* theEvent )
+ {
+ QLineEdit::paintEvent( theEvent );
+ if( text().isEmpty() && !myPlaceHolder.isEmpty() )
+ {
+ QPainter aPainter( this );
+ QRect aRect = rect();
+ int aHorMargin = 5;
+ aRect.adjust( aHorMargin, 0, 0, 0 );
+
+ QColor aColor = palette().text().color();
+ aColor.setAlpha( 128 );
+ QPen anOldpen = aPainter.pen();
+ aPainter.setPen( aColor );
+ QFontMetrics aFontMetrics = fontMetrics();
+ QString elidedText = aFontMetrics.elidedText( myPlaceHolder, Qt::ElideRight, aRect.width() );
+ aPainter.drawText( aRect, Qt::AlignLeft | Qt::AlignVCenter, elidedText );
+ aPainter.setPen( anOldpen );
+ }
+ }
+
+private:
+ QString myPlaceHolder;
+};
+
ModuleBase_WidgetLineEdit::ModuleBase_WidgetLineEdit(QWidget* theParent,
const Config_WidgetAPI* theData,
- const std::string& theParentId)
+ const std::string& theParentId,
+ const std::string& thePlaceHolder )
: ModuleBase_ModelWidget(theParent, theData, theParentId)
{
QFormLayout* aMainLay = new QFormLayout(this);
if (!aLabelIcon.isEmpty())
aLabel->setPixmap(QPixmap(aLabelIcon));
- myLineEdit = new QLineEdit(this);
+ myLineEdit = new CustomLineEdit( this, QString::fromStdString( thePlaceHolder ) );
+ // Here we do not use the Qt's standard method setPlaceHolderText() since it
+ // draws the place holder only if there is no focus on widget;
+ // we would like to see the place holder in the case of empty text
+ // even if the widget is focused.
+ // The corresponding patch appears in Qt only since version 5.x
+
myLineEdit->setMinimumHeight(20);
+
aMainLay->addRow(aLabel, myLineEdit);
this->setLayout(aMainLay);
return true;
}
-bool ModuleBase_WidgetLineEdit::restoreValue()
+bool ModuleBase_WidgetLineEdit::restoreValueCustom()
{
// A rare case when plugin was not loaded.
if(!myFeature)