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add special handling for modifier keys to also generate modifier key events

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This commit is contained in:
SlowRiot 2024-12-09 17:40:49 +00:00
parent bee91678d6
commit 8ecea4d569
1 changed files with 43 additions and 4 deletions
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47
backends/imgui_impl_emscripten.cpp
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@ -451,16 +451,33 @@ void ImGui_ImplEmscripten_Init() {
auto const key{translate_key(key_event->code)}; auto const key{translate_key(key_event->code)};
auto &imgui_io{ImGui::GetIO()}; auto &imgui_io{ImGui::GetIO()};
imgui_io.AddKeyEvent(key, true); imgui_io.AddKeyEvent(key, true);
switch(key) { // special cases for certain key events
switch(key) { // special cases for certain key events that need to be consumed to prevent unwanted behaviour case ImGuiKey_LeftCtrl: // additional events for modifier keys
case ImGuiKey_RightCtrl:
imgui_io.AddKeyEvent(ImGuiMod_Ctrl, true);
break;
case ImGuiKey_LeftShift:
case ImGuiKey_RightShift:
imgui_io.AddKeyEvent(ImGuiMod_Shift, true);
break;
case ImGuiKey_LeftAlt:
case ImGuiKey_RightAlt:
imgui_io.AddKeyEvent(ImGuiMod_Alt, true);
break;
case ImGuiKey_LeftSuper:
case ImGuiKey_RightSuper:
imgui_io.AddKeyEvent(ImGuiMod_Super, true);
break;
// TODO: case ImGuiKey_Menu: do we want to do anything with this?
case ImGuiKey_Tab: // consuming tab prevents the user tabbing to other parts of the browser interface outside the window content case ImGuiKey_Tab: // consuming tab prevents the user tabbing to other parts of the browser interface outside the window content
return imgui_io.WantCaptureKeyboard; // the event was consumed only if imgui wants to capture the keyboard return imgui_io.WantCaptureKeyboard; // the event was consumed only if imgui wants to capture the keyboard
case ImGuiKey_Enter: // consuming enter prevents the word "Enter" appearing in text input via the keypress callback case ImGuiKey_Enter: // consuming enter prevents the word "Enter" appearing in text input via the keypress callback
case ImGuiKey_Delete: // consuming enter prevents the word "Delete" appearing in text input via the keypress callback case ImGuiKey_Delete: // consuming enter prevents the word "Delete" appearing in text input via the keypress callback
return imgui_io.WantTextInput; // the event was consumed only if we're currently accepting text input return imgui_io.WantTextInput; // the event was consumed only if we're currently accepting text input
default: default:
return false; // the event was not consumed break;
} }
return false; // if no special handling, the event was not consumed
} }
); );
emscripten_set_keyup_callback( emscripten_set_keyup_callback(
@ -468,7 +485,29 @@ void ImGui_ImplEmscripten_Init() {
nullptr, // userData nullptr, // userData
false, // useCapture false, // useCapture
[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_KEYUP [](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_KEYUP
ImGui::GetIO().AddKeyEvent(translate_key(key_event->code), false); auto const key{translate_key(key_event->code)};
auto &imgui_io{ImGui::GetIO()};
imgui_io.AddKeyEvent(key, false);
switch(key) { // special cases for certain key events
case ImGuiKey_LeftCtrl: // additional events for modifier keys
case ImGuiKey_RightCtrl:
imgui_io.AddKeyEvent(ImGuiMod_Ctrl, false);
break;
case ImGuiKey_LeftShift:
case ImGuiKey_RightShift:
imgui_io.AddKeyEvent(ImGuiMod_Shift, false);
break;
case ImGuiKey_LeftAlt:
case ImGuiKey_RightAlt:
imgui_io.AddKeyEvent(ImGuiMod_Alt, false);
break;
case ImGuiKey_LeftSuper:
case ImGuiKey_RightSuper:
imgui_io.AddKeyEvent(ImGuiMod_Super, false);
break;
default:
break;
}
return false; // the event was not consumed return false; // the event was not consumed
} }
); );