mirror of
https://github.com/Relintai/pandemonium_engine_minimal.git
synced 2024-12-28 18:57:15 +01:00
139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
// mouse_linux_input.cpp
|
|
/*
|
|
* FRT - A Godot platform targeting single board computers
|
|
* Copyright (c) 2017-2019 Emanuele Fornara
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "frt.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "bits/linux_input.h"
|
|
|
|
namespace frt {
|
|
|
|
inline void clamp(int &v, const int max) {
|
|
if (v < 0)
|
|
v = 0;
|
|
if (v >= max)
|
|
v = max - 1;
|
|
}
|
|
|
|
class MouseLinuxInput : public Mouse, public EventDispatcher, public LinuxInput {
|
|
private:
|
|
static const int wait_ms = 100;
|
|
bool valid;
|
|
Handler *h;
|
|
bool grabbed;
|
|
Vec2 size;
|
|
Vec2 pos;
|
|
|
|
public:
|
|
MouseLinuxInput()
|
|
: valid(false), h(0), grabbed(false) {}
|
|
// Module
|
|
const char *get_id() const { return "mouse_linux_input"; }
|
|
bool probe() {
|
|
valid = open("FRT_MOUSE_ID", "event-mouse");
|
|
if (valid)
|
|
App::instance()->add_dispatcher(this);
|
|
return valid;
|
|
}
|
|
void cleanup() {
|
|
close();
|
|
if (valid)
|
|
App::instance()->remove_dispatcher(this);
|
|
valid = false;
|
|
}
|
|
bool handle_meta(int gd_code, bool pressed) {
|
|
if (pressed)
|
|
return false;
|
|
switch (gd_code) {
|
|
case 'M':
|
|
if (LinuxInput::grab(!grabbed, wait_ms))
|
|
grabbed = !grabbed;
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
// LinuxInput
|
|
void handle(const input_event &ev) {
|
|
if (ev.type == EV_REL) {
|
|
if (ev.code == ABS_X) {
|
|
pos.x += ev.value;
|
|
clamp(pos.x, size.x);
|
|
} else if (ev.code == ABS_Y) {
|
|
pos.y += ev.value;
|
|
clamp(pos.y, size.y);
|
|
} else if (ev.code == ABS_WHEEL) {
|
|
Button button = ev.value > 0 ? WheelUp : WheelDown;
|
|
if (h) {
|
|
h->handle_mouse_button(button, true);
|
|
h->handle_mouse_button(button, false); // TODO: needed?
|
|
}
|
|
return;
|
|
}
|
|
if (h)
|
|
h->handle_mouse_motion(pos);
|
|
} else {
|
|
if (ev.type != EV_KEY || (ev.value != KV_Pressed && ev.value != KV_Released))
|
|
return;
|
|
bool pressed = (ev.value == KV_Pressed);
|
|
Button button;
|
|
switch (ev.code) {
|
|
case BTN_LEFT:
|
|
button = Left;
|
|
break;
|
|
case BTN_RIGHT:
|
|
button = Right;
|
|
break;
|
|
case BTN_MIDDLE:
|
|
button = Middle;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
if (h)
|
|
h->handle_mouse_button(button, pressed);
|
|
}
|
|
}
|
|
// EventDispatcher
|
|
void dispatch_events() { poll(); }
|
|
// Mouse
|
|
Vec2 get_pos() const { return pos; }
|
|
void set_size(Vec2 size) {
|
|
this->size = size;
|
|
pos.x = size.x - 1;
|
|
pos.y = size.y - 1;
|
|
}
|
|
void set_handler(Handler *handler) {
|
|
h = handler;
|
|
grabbed = LinuxInput::grab(true, wait_ms);
|
|
}
|
|
};
|
|
|
|
FRT_REGISTER(MouseLinuxInput)
|
|
|
|
} // namespace frt
|