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Adds an interface allowing keyboard mappers to declare modifiers that are 'essential'.

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i.e. ones that, if not delivered reliably, will cause the related machine to behave unexpectedly.
This commit is contained in:
Thomas Harte 2019-09-22 13:14:09 -04:00
parent e78b1dcf3c
commit a416bc0058
3 changed files with 14 additions and 1 deletions
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10
Machines/Apple/Macintosh/Keyboard.cpp
View File

@ -86,3 +86,13 @@ uint16_t KeyboardMapper::mapped_key_for_key(Inputs::Keyboard::Key key) {
#undef Bind
}
}
std::set<Inputs::Keyboard::Key> KeyboardMapper::get_essential_modifiers() {
// Control is fairly optional for a Mac, but option, meta and shift
// are essential.
return {
Inputs::Keyboard::Key::LeftShift, Inputs::Keyboard::Key::RightShift,
Inputs::Keyboard::Key::LeftOption, Inputs::Keyboard::Key::RightOption,
Inputs::Keyboard::Key::LeftMeta, Inputs::Keyboard::Key::RightMeta,
};
}

3
Machines/Apple/Macintosh/Keyboard.hpp
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@ -291,7 +291,8 @@ class Keyboard {
Provides a mapping from idiomatic PC keys to Macintosh keys.
*/
class KeyboardMapper: public KeyboardMachine::MappedMachine::KeyboardMapper {
uint16_t mapped_key_for_key(Inputs::Keyboard::Key key) override;
uint16_t mapped_key_for_key(Inputs::Keyboard::Key key) final;
std::set<Inputs::Keyboard::Key> get_essential_modifiers() final;
};
}

2
Machines/KeyboardMachine.hpp
View File

@ -11,6 +11,7 @@
#include <cstdint>
#include <string>
#include <set>
#include "../Inputs/Keyboard.hpp"
@ -65,6 +66,7 @@ class MappedMachine: public Inputs::Keyboard::Delegate, public Machine {
class KeyboardMapper {
public:
virtual uint16_t mapped_key_for_key(Inputs::Keyboard::Key key) = 0;
virtual std::set<Inputs::Keyboard::Key> get_essential_modifiers() { return {}; }
};
/// Terminates a key sequence from the character mapper.