libretro-genode/src/show_input/main.cc

141 lines
3.1 KiB
C++

/*
* \brief Tool for checking input events
* \author Emery Hemingway
* \date 2018-10-09
*/
/*
* Copyright (C) 2018 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.
*/
/* Genode includes */
#include <nitpicker_session/connection.h>
#include <framebuffer_session/connection.h>
#include <base/component.h>
#include <base/attached_rom_dataspace.h>
#include <base/log.h>
#include <base/heap.h>
#include <os/pixel_rgb565.h>
#include <os/surface.h>
#include <nitpicker_gfx/tff_font.h>
#include <nitpicker_gfx/box_painter.h>
/* gems includes */
#include <gems/vfs.h>
#include <gems/vfs_font.h>
namespace Show_input {
using namespace Genode;
typedef Surface_base::Point Point;
typedef Surface_base::Area Area;
typedef Surface_base::Rect Rect;
struct Main;
};
struct Show_input::Main
{
Genode::Env &_env;
Heap _heap { _env.ram(), _env.rm() };
Attached_rom_dataspace _config { _env, "config" };
Root_directory _root { _env, _heap, _config.xml().sub_node("vfs") };
Vfs_font _font { _heap, _root, "fonts/text/regular" };
Nitpicker::Connection _nitpicker { _env };
Input::Session_client &_input = *_nitpicker.input();
Framebuffer::Session &_fb = *_nitpicker.framebuffer();
Dataspace_capability _fb_ds_cap()
{
_nitpicker.buffer(_nitpicker.mode(), false);
return _fb.dataspace();
}
Attached_dataspace _fb_ds { _env.rm(), _fb_ds_cap() };
Nitpicker::Session::View_handle _view = _nitpicker.create_view();
typedef Pixel_rgb565 PT;
Surface_base::Area _size { (unsigned)_fb.mode().width(),
(unsigned)_font.height() };
Surface<PT> _surface { _fb_ds.local_addr<PT>(), _size };
void _refresh() { _fb.refresh(0, 0, _size.w(), _size.h()); }
Signal_handler<Main> _input_sigh {
_env.ep(), *this, &Main::_handle_input };
void _handle_input()
{
using namespace Input;
bool refresh = false;
_input.for_each_event([&] (Input::Event const &ev) {
ev.handle_press([&] (Keycode key, Codepoint codepoint) {
String<128> info(
key_name(key), " ",
codepoint, " "
"(", codepoint.value, ")");
Box_painter::paint(
_surface,
Rect(Point(), _size),
Color(0, 0, 0));
Text_painter::paint(
_surface,
Text_painter::Position(0, 0),
_font,
Color(255, 255, 255),
info.string());
refresh = true;
auto w = _font.string_width(info.string()).decimal();
auto h = _font.height();
_nitpicker.enqueue<Nitpicker::Session::Command::Geometry>(
_view, Rect(Point(0, 0), Area(w*2, h*2)));
});
});
if (refresh) {
_nitpicker.execute();
_refresh();
}
}
Main(Env &env) : _env(env)
{
_input.sigh(_input_sigh);
_nitpicker.enqueue<Nitpicker::Session::Command::Geometry>(
_view, Rect(Point(0, 0), _size));
_nitpicker.enqueue<Nitpicker::Session::Command::To_front>(
_view, Nitpicker::Session::View_handle());
_nitpicker.execute();
_surface.clip(Rect(Point(0, 0), _size));
}
};
void Component::construct(Genode::Env &env)
{
env.exec_static_constructors();
static Show_input::Main inst(env);
}