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96 lines
3 KiB
C++
96 lines
3 KiB
C++
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#ifndef MANGLE_INPUT_DRIVER_H
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#define MANGLE_INPUT_DRIVER_H
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#include "../tools/shared_ptr.hpp"
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namespace Mangle
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{
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namespace Input
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{
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/** Generic callback for input events. The meaning of the
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parameters depend on the system producing the events.
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*/
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struct Event
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{
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/// Event types
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enum EventType
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{
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EV_Unknown = -1, // Unknown event type
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EV_KeyDown = 1, // Key, mouse or other button was pressed
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EV_KeyUp = 2, // Key, mouse or other button was released
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EV_MouseMove = 3, // Mouse movement (all axis movement?)
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EV_Other = 4 // Other event
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};
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/**
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Called upon all events. The first parameter give the event
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type, the second gives additional data (usually the local
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keysym as defined by the driver), and the pointer points to
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the full custom event structure provided by the driver (the
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type may vary depending on the EventType, this is defined in
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the Driver documentation.)
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*/
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virtual void event(EventType type, int index, const void *p) = 0;
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virtual ~Event() {}
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};
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/** Input::Driver is the main interface to any input system that
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handles keyboard and/or mouse input, along with any other
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input source like joysticks.
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It is really a generalized event system, and could also be
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used for non-input related events. The definition of the event
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codes and structures are entirely dependent on the
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implementation.
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A system-independent key code list will be found in keys.hpp,
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and input drivers should privide optional translations to/from
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this list for full compatibility.
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*/
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struct Driver
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{
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virtual ~Driver() {}
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/** Captures input and produces the relevant events from it. An
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event callback must be set with setEvent(), or all events
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will be ignored.
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*/
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virtual void capture() = 0;
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/** Check the state of a given key or button. The key/button
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definitions depends on the driver.
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*/
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virtual bool isDown(int index) = 0;
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/** Show or hide system mouse cursor
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*/
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virtual void showMouse(bool show) = 0;
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/** Set the event handler for input events. The evt->event()
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function is called for each event. The meaning of the index
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and *p parameters will be specific to each driver and to
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each input system.
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*/
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void setEvent(Event *evt)
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{ event = evt; }
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/** Instigate an event. Is used internally for all events, but
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can also be called from the outside to "fake" events from
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this driver.
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*/
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void makeEvent(Event::EventType type, int index, const void *p=NULL)
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{
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if(event)
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event->event(type,index,p);
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}
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private:
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/// Holds the event callback set byt setEvent()
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Event *event;
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};
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typedef boost::shared_ptr<Driver> DriverPtr;
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}
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}
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#endif
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