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Add API to query currently held modifiers keys

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Robin Gareus 2022-06-21 21:34:08 +02:00
parent f1eb45e129
commit 3266b1acb0
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2 changed files with 34 additions and 1 deletions
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3
libs/gtkmm2ext/gtkmm2ext/keyboard.h
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@ -113,7 +113,8 @@ public:
set_modifier (newval, RangeSelectModifier);
}
bool key_is_down (uint32_t keyval);
bool key_is_down (uint32_t keyval);
guint modifier_state ();
static GdkModifierType RelevantModifierKeyMask;

32
libs/gtkmm2ext/keyboard.cc
View file

@ -476,6 +476,38 @@ Keyboard::key_is_down (uint32_t keyval)
return find (state.begin (), state.end (), keyval) != state.end ();
}
guint
Keyboard::modifier_state ()
{
int mask = 0;
for (auto const& keyval : state) {
switch (keyval) {
case GDK_Meta_R:
case GDK_Meta_L:
mask |= GDK_MOD2_MASK;
break;
case GDK_Shift_R:
case GDK_Shift_L:
mask |= GDK_SHIFT_MASK;
break;
case GDK_Caps_Lock:
mask |= GDK_LOCK_MASK;
break;
case GDK_Alt_R:
case GDK_Alt_L:
mask |= GDK_MOD1_MASK;
break;
case GDK_Control_R:
case GDK_Control_L:
mask |= GDK_CONTROL_MASK;
break;
default:
break;
}
}
return mask & RelevantModifierKeyMask;
}
bool
Keyboard::enter_window (GdkEventCrossing*, Gtk::Window* win)
{