genode/repos/gems/src/app/text_area/nitpicker.h

123 lines
3.0 KiB
C++

/*
* \brief Nitpicker wrapper for monitoring the user input of GUI components
* \author Norman Feske
* \date 2020-01-12
*/
/*
* Copyright (C) 2020 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _NITPICKER_H_
#define _NITPICKER_H_
/* Genode includes */
#include <input/component.h>
#include <base/session_object.h>
#include <nitpicker_session/connection.h>
/* local includes */
#include <input_event_handler.h>
namespace Nitpicker {
using namespace Genode;
struct Session_component;
}
struct Nitpicker::Session_component : Session_object<Nitpicker::Session>
{
Env &_env;
Input_event_handler &_event_handler;
Nitpicker::Connection _connection;
Input::Session_component _input_component { _env, _env.ram() };
Signal_handler<Session_component> _input_handler {
_env.ep(), *this, &Session_component::_handle_input };
void _handle_input()
{
_connection.input()->for_each_event([&] (Input::Event ev) {
/* handle event locally within the sculpt manager */
_event_handler.handle_input_event(ev);
_input_component.submit(ev);
});
}
template <typename... ARGS>
Session_component(Env &env, Input_event_handler &event_handler, ARGS &&... args)
:
Session_object(args...),
_env(env), _event_handler(event_handler),
_connection(env, _label.string())
{
_connection.input()->sigh(_input_handler);
_env.ep().manage(_input_component);
_input_component.event_queue().enabled(true);
}
~Session_component() { _env.ep().dissolve(_input_component); }
void upgrade(Session::Resources const &resources)
{
_connection.upgrade(resources);
}
Framebuffer::Session_capability framebuffer_session() override {
return _connection.framebuffer_session(); }
Input::Session_capability input_session() override {
return _input_component.cap(); }
View_handle create_view(View_handle parent) override {
return _connection.create_view(parent); }
void destroy_view(View_handle view) override {
_connection.destroy_view(view); }
View_handle view_handle(View_capability view_cap, View_handle handle) override {
return _connection.view_handle(view_cap, handle); }
View_capability view_capability(View_handle view) override {
return _connection.view_capability(view); }
void release_view_handle(View_handle view) override {
_connection.release_view_handle(view); }
Dataspace_capability command_dataspace() override {
return _connection.command_dataspace(); }
void execute() override {
_connection.execute(); }
Framebuffer::Mode mode() override {
return _connection.mode(); }
void mode_sigh(Signal_context_capability sigh) override {
_connection.mode_sigh(sigh); }
void buffer(Framebuffer::Mode mode, bool use_alpha) override
{
/*
* Do not call 'Connection::buffer' to avoid paying session quota
* from our own budget.
*/
_connection.Client::buffer(mode, use_alpha);
}
void focus(Capability<Nitpicker::Session> session) override {
_connection.focus(session); }
};
#endif /* _NITPICKER_H_ */