nativestyle: refactor many functions to be const

Many of the virtual functions should be const, as
they should not modify the state of the item.

Change-Id: I94a7f9ae56204c8f8f737911e15d81f82d8add83
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/imports/nativestyle/items/qquickstyleitemcombobox.cpp b/src/imports/nativestyle/items/qquickstyleitemcombobox.cpp
index 7841d062..0ac3756e 100644
--- a/src/imports/nativestyle/items/qquickstyleitemcombobox.cpp
+++ b/src/imports/nativestyle/items/qquickstyleitemcombobox.cpp
@@ -36,12 +36,12 @@
 
 #include "qquickstyleitemcombobox.h"
 
-QFont QQuickStyleItemComboBox::styleFont(QQuickItem *control)
+QFont QQuickStyleItemComboBox::styleFont(QQuickItem *control) const
 {
     return style()->font(QStyle::CE_PushButtonLabel, controlSize(control));
 }
 
-void QQuickStyleItemComboBox::connectToControl()
+void QQuickStyleItemComboBox::connectToControl() const
 {
     QQuickStyleItem::connectToControl();
     auto comboBox = control<QQuickComboBox>();
@@ -65,14 +65,14 @@ StyleItemGeometry QQuickStyleItemComboBox::calculateGeometry()
     return geometry;
 }
 
-void QQuickStyleItemComboBox::paintEvent(QPainter *painter)
+void QQuickStyleItemComboBox::paintEvent(QPainter *painter) const
 {
     QStyleOptionComboBox styleOption;
     initStyleOption(styleOption);
     style()->drawComplexControl(QStyle::CC_ComboBox, &styleOption, painter);
 }
 
-void QQuickStyleItemComboBox::initStyleOption(QStyleOptionComboBox &styleOption)
+void QQuickStyleItemComboBox::initStyleOption(QStyleOptionComboBox &styleOption) const
 {
     initStyleOptionBase(styleOption);
     auto comboBox = control<QQuickComboBox>();