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#1408 Disable wheel zooom when QComboBox does not have focus

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This commit is contained in:
Magne Sjaastad 2017-04-18 13:55:21 +02:00
parent b2d3a84862
commit c6c1af06e3
1 changed files with 52 additions and 1 deletions
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53
Fwk/AppFwk/cafUserInterface/cafPdmUiComboBoxEditor.cpp
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@ -45,6 +45,7 @@
#include <QComboBox>
#include <QLabel>
#include <QWheelEvent>
namespace caf
@ -98,14 +99,64 @@ void PdmUiComboBoxEditor::configureAndUpdateUi(const QString& uiConfigName)
}
}
//--------------------------------------------------------------------------------------------------
// Special class used to prevent a combo box to steal focus when scrolling
// the QScrollArea using the mouse wheel
//
// Based on
// http://stackoverflow.com/questions/5821802/qspinbox-inside-a-qscrollarea-how-to-prevent-spin-box-from-stealing-focus-when
//--------------------------------------------------------------------------------------------------
class CustomQComboBox : public QComboBox
{
public:
explicit CustomQComboBox(QWidget* parent = 0)
: QComboBox(parent)
{}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void wheelEvent(QWheelEvent *e)
{
if (hasFocus())
{
QComboBox::wheelEvent(e);
}
else
{
// Ignore the event to make sure event is handled by another widget
e->ignore();
}
}
protected:
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
virtual void focusInEvent(QFocusEvent* e) override
{
setFocusPolicy(Qt::WheelFocus);
QComboBox::focusInEvent(e);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
virtual void focusOutEvent(QFocusEvent* e) override
{
setFocusPolicy(Qt::StrongFocus);
QComboBox::focusOutEvent(e);
}
};
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
QWidget* PdmUiComboBoxEditor::createEditorWidget(QWidget * parent)
{
m_comboBox = new QComboBox(parent);
m_comboBox = new CustomQComboBox(parent);
connect(m_comboBox, SIGNAL(activated(int)), this, SLOT(slotIndexActivated(int)));
return m_comboBox;
}