Remove usage of deprecated functions
`GTypeDebugFlags`, `GTimeVal`, and `QImage QImage::mirrored(bool, bool) const &` are deprecated and should not be used anymore. Please update the code to prevent these warnings. You can see the warnings below.
```
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,
from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
from /usr/include/gtk-2.0/gtk/gtkbin.h:35,
from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,
from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:33,
from qgtkglobal_p.h:39,
from qgtkpainter_p.h:38,
from qgtkpainter.cpp:21:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:64: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]
236 | void gtk_type_init (GTypeDebugFlags debug_flags);
| ^
In file included from /usr/include/glib-2.0/gobject/gobject.h:26,
from /usr/include/glib-2.0/gobject/gbinding.h:31,
from /usr/include/glib-2.0/glib-object.h:24,
from /usr/include/glib-2.0/gio/gioenums.h:30,
from /usr/include/glib-2.0/gio/giotypes.h:30,
from /usr/include/glib-2.0/gio/gio.h:28,
from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-2.0/gdk/gdk.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:32:
/usr/include/glib-2.0/gobject/gtype.h:731:3: note: declared here
731 | } GTypeDebugFlags GOBJECT_DEPRECATED_TYPE_IN_2_36;
| ^~~~~~~~~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,
from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtk.h:126:
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:12: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declaration ]
73 | GTimeVal last_popdown;
| ^~~~~~~~~~~~
In file included from /usr/include/glib-2.0/glib/galloca.h:34,
from /usr/include/glib-2.0/glib.h:32,
from /usr/include/glib-2.0/gobject/gbinding.h:30:
/usr/include/glib-2.0/glib/gtypes.h:578:26: note: declared here
578 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime);
| ^~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,
from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
from /usr/include/gtk-2.0/gtk/gtkbin.h:35,
from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,
from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:33,
from qgtkglobal_p.h:39,
from qgtkpainter_p.h:38,
from qgtk2painter_p.h:38,
from qgtk2painter.cpp:21:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:64: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]
236 | void gtk_type_init (GTypeDebugFlags debug_flags);
| ^
In file included from /usr/include/glib-2.0/gobject/gobject.h:26,
from /usr/include/glib-2.0/gobject/gbinding.h:31,
from /usr/include/glib-2.0/glib-object.h:24,
from /usr/include/glib-2.0/gio/gioenums.h:30,
from /usr/include/glib-2.0/gio/giotypes.h:30,
from /usr/include/glib-2.0/gio/gio.h:28,
from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-2.0/gdk/gdk.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:32:
/usr/include/glib-2.0/gobject/gtype.h:731:3: note: declared here
731 | } GTypeDebugFlags GOBJECT_DEPRECATED_TYPE_IN_2_36;
| ^~~~~~~~~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,
from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtk.h:126:
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:12: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declaration ]
73 | GTimeVal last_popdown;
| ^~~~~~~~~~~~
In file included from /usr/include/glib-2.0/glib/galloca.h:34,
from /usr/include/glib-2.0/glib.h:32,
from /usr/include/glib-2.0/gobject/gbinding.h:30:
/usr/include/glib-2.0/glib/gtypes.h:578:26: note: declared here
578 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime);
| ^~~~~~~~
```
```
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,
from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
from /usr/include/gtk-2.0/gtk/gtkbin.h:35,
from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,
from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:33,
from qt6gtk2theme.cpp:26:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:64: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]
236 | void gtk_type_init (GTypeDebugFlags debug_flags);
| ^
In file included from /usr/include/glib-2.0/gobject/gobject.h:26,
from /usr/include/glib-2.0/gobject/gbinding.h:31,
from /usr/include/glib-2.0/glib-object.h:24,
from /usr/include/glib-2.0/gio/gioenums.h:30,
from /usr/include/glib-2.0/gio/giotypes.h:30,
from /usr/include/glib-2.0/gio/gio.h:28,
from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-2.0/gdk/gdk.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:32:
/usr/include/glib-2.0/gobject/gtype.h:731:3: note: declared here
731 | } GTypeDebugFlags GOBJECT_DEPRECATED_TYPE_IN_2_36;
| ^~~~~~~~~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,
from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtk.h:126:
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:12: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declaration ]
73 | GTimeVal last_popdown;
| ^~~~~~~~~~~~
In file included from /usr/include/glib-2.0/glib/galloca.h:34,
from /usr/include/glib-2.0/glib.h:32,
from /usr/include/glib-2.0/gobject/gbinding.h:30:
/usr/include/glib-2.0/glib/gtypes.h:578:26: note: declared here
578 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime);
| ^~~~~~~~
qgtk2painter.cpp: In member function ‘QPixmap QGtk2Painter::renderTheme(uchar*, uchar*, const QRect&) const’:
qgtk2painter.cpp:58:53: warning: ‘QImage QImage::mirrored(bool, bool) const &’ is deprecated: Use flipped(Qt::Orientations) instead [-Wdeprecated-declarations]
58 | return QPixmap::fromImage(converted.mirrored(m_hflipped, m_vflipped));
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/qt6/QtGui/qpixmap.h:13,
from /usr/include/qt6/QtGui/QPixmap:1,
from qgtkpainter_p.h:42:
/usr/include/qt6/QtGui/qimage.h:220:26: note: declared here
220 | [[nodiscard]] QImage mirrored(bool horizontally = false, bool vertically = true) const &
| ^~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,
from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
from /usr/include/gtk-2.0/gtk/gtkbin.h:35,
from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,
from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:33,
from qgtkglobal_p.h:39,
from qgtkpainter_p.h:38,
from qgtkstyle.cpp:53:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:64: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]
236 | void gtk_type_init (GTypeDebugFlags debug_flags);
| ^
In file included from /usr/include/glib-2.0/gobject/gobject.h:26,
from /usr/include/glib-2.0/gobject/gbinding.h:31,
from /usr/include/glib-2.0/glib-object.h:24,
from /usr/include/glib-2.0/gio/gioenums.h:30,
from /usr/include/glib-2.0/gio/giotypes.h:30,
from /usr/include/glib-2.0/gio/gio.h:28,
from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-2.0/gdk/gdk.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:32:
/usr/include/glib-2.0/gobject/gtype.h:731:3: note: declared here
731 | } GTypeDebugFlags GOBJECT_DEPRECATED_TYPE_IN_2_36;
| ^~~~~~~~~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,
from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtk.h:126:
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:12: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declaration ]
73 | GTimeVal last_popdown;
| ^~~~~~~~~~~~
In file included from /usr/include/glib-2.0/glib/galloca.h:34,
from /usr/include/glib-2.0/glib.h:32,
from /usr/include/glib-2.0/gobject/gbinding.h:30:
/usr/include/glib-2.0/glib/gtypes.h:578:26: note: declared here
578 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime);
| ^~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,
from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
from /usr/include/gtk-2.0/gtk/gtkbin.h:35,
from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,
from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:33,
from qgtkglobal_p.h:39,
from qgtkstyle_p_p.h:46,
from qgtkstyle_p.cpp:21:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:64: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]
236 | void gtk_type_init (GTypeDebugFlags debug_flags);
| ^
In file included from /usr/include/glib-2.0/gobject/gobject.h:26,
from /usr/include/glib-2.0/gobject/gbinding.h:31,
from /usr/include/glib-2.0/glib-object.h:24,
from /usr/include/glib-2.0/gio/gioenums.h:30,
from /usr/include/glib-2.0/gio/giotypes.h:30,
from /usr/include/glib-2.0/gio/gio.h:28,
from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-2.0/gdk/gdk.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:32:
/usr/include/glib-2.0/gobject/gtype.h:731:3: note: declared here
731 | } GTypeDebugFlags GOBJECT_DEPRECATED_TYPE_IN_2_36;
| ^~~~~~~~~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,
from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtk.h:126:
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:12: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declaration ]
73 | GTimeVal last_popdown;
| ^~~~~~~~~~~~
In file included from /usr/include/glib-2.0/glib/galloca.h:34,
from /usr/include/glib-2.0/glib.h:32,
from /usr/include/glib-2.0/gobject/gbinding.h:30:
/usr/include/glib-2.0/glib/gtypes.h:578:26: note: declared here
578 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime);
| ^~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,
from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
from /usr/include/gtk-2.0/gtk/gtkbin.h:35,
from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,
from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:33,
from qt6gtk2dialoghelpers.cpp:34:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:64: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]
236 | void gtk_type_init (GTypeDebugFlags debug_flags);
| ^
In file included from /usr/include/glib-2.0/gobject/gobject.h:26,
from /usr/include/glib-2.0/gobject/gbinding.h:31,
from /usr/include/glib-2.0/glib-object.h:24,
from /usr/include/glib-2.0/gio/gioenums.h:30,
from /usr/include/glib-2.0/gio/giotypes.h:30,
from /usr/include/glib-2.0/gio/gio.h:28,
from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-2.0/gdk/gdk.h:32,
from /usr/include/gtk-2.0/gtk/gtk.h:32:
/usr/include/glib-2.0/gobject/gtype.h:731:3: note: declared here
731 | } GTypeDebugFlags GOBJECT_DEPRECATED_TYPE_IN_2_36;
| ^~~~~~~~~~~~~~~
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,
from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
from /usr/include/gtk-2.0/gtk/gtk.h:126:
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:12: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declaration ]
73 | GTimeVal last_popdown;
| ^~~~~~~~~~~~
In file included from /usr/include/glib-2.0/glib/galloca.h:34,
from /usr/include/glib-2.0/glib.h:32,
from /usr/include/glib-2.0/gobject/gbinding.h:30:
/usr/include/glib-2.0/glib/gtypes.h:578:26: note: declared here
578 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime);
| ^~~~~~~~
```
issue