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Fix an issue with modifier keys: #3

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Fix an issue with modifier keys: #3

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14 changes: 10 additions & 4 deletions src/OsgImGuiHandler.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -181,16 +181,22 @@ bool OsgImGuiHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionA
const bool isKeyDown = ea.getEventType() == osgGA::GUIEventAdapter::KEYDOWN;
const int c = ea.getKey();
const int special_key = ConvertFromOSGKey(c);

io.KeyCtrl = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_CTRL;
io.KeyShift = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_SHIFT;
io.KeyAlt = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_ALT;
io.KeySuper = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_SUPER;
if(io.KeyCtrl) io.KeyMods |= ImGuiKeyModFlags_Ctrl;
if(io.KeyShift) io.KeyMods |= ImGuiKeyModFlags_Shift;
if(io.KeyAlt) io.KeyMods |= ImGuiKeyModFlags_Alt;
if(io.KeySuper) io.KeyMods |= ImGuiKeyModFlags_Super;

if (special_key > 0)
{
assert((special_key >= 0 && special_key < 512) && "ImGui KeysMap is an array of 512");

io.KeysDown[special_key] = isKeyDown;

io.KeyCtrl = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_CTRL;
io.KeyShift = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_SHIFT;
io.KeyAlt = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_ALT;
io.KeySuper = ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_SUPER;
}
else if (isKeyDown && c > 0 && c < 0xFF)
{
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