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/*
Copyright 2016-2023 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include <QKeyEvent>
#include <SDL2/SDL.h>
#include "Input.h"
#include "Config.h"
using namespace melonDS;
namespace Input
{
int JoystickID;
SDL_Joystick* Joystick = nullptr;
u32 KeyInputMask, JoyInputMask;
u32 KeyHotkeyMask, JoyHotkeyMask;
u32 HotkeyMask, LastHotkeyMask;
u32 HotkeyPress, HotkeyRelease;
u32 InputMask;
void Init()
{
KeyInputMask = 0xFFF;
JoyInputMask = 0xFFF;
InputMask = 0xFFF;
KeyHotkeyMask = 0;
JoyHotkeyMask = 0;
HotkeyMask = 0;
LastHotkeyMask = 0;
}
void OpenJoystick()
{
if (Joystick) SDL_JoystickClose(Joystick);
int num = SDL_NumJoysticks();
if (num < 1)
{
Joystick = nullptr;
return;
}
if (JoystickID >= num)
JoystickID = 0;
Joystick = SDL_JoystickOpen(JoystickID);
}
void CloseJoystick()
{
if (Joystick)
{
SDL_JoystickClose(Joystick);
Joystick = nullptr;
}
}
int GetEventKeyVal(QKeyEvent* event)
{
int key = event->key();
int mod = event->modifiers();
bool ismod = (key == Qt::Key_Control ||
key == Qt::Key_Alt ||
key == Qt::Key_AltGr ||
key == Qt::Key_Shift ||
key == Qt::Key_Meta);
if (!ismod)
key |= mod;
else if (Input::IsRightModKey(event))
key |= (1<<31);
return key;
}
void KeyPress(QKeyEvent* event)
{
int keyHK = GetEventKeyVal(event);
int keyKP = keyHK;
if (event->modifiers() != Qt::KeypadModifier)
keyKP &= ~event->modifiers();
for (int i = 0; i < 12; i++)
if (keyKP == Config::KeyMapping[i])
KeyInputMask &= ~(1<<i);
for (int i = 0; i < HK_MAX; i++)
if (keyHK == Config::HKKeyMapping[i])
KeyHotkeyMask |= (1<<i);
}
void KeyRelease(QKeyEvent* event)
{
int keyHK = GetEventKeyVal(event);
int keyKP = keyHK;
if (event->modifiers() != Qt::KeypadModifier)
keyKP &= ~event->modifiers();
for (int i = 0; i < 12; i++)
if (keyKP == Config::KeyMapping[i])
KeyInputMask |= (1<<i);
for (int i = 0; i < HK_MAX; i++)
if (keyHK == Config::HKKeyMapping[i])
KeyHotkeyMask &= ~(1<<i);
}
void KeyReleaseAll()
{
KeyInputMask = 0xFFF;
KeyHotkeyMask = 0;
}
bool JoystickButtonDown(int val)
{
if (val == -1) return false;
bool hasbtn = ((val & 0xFFFF) != 0xFFFF);
if (hasbtn)
{
if (val & 0x100)
{
int hatnum = (val >> 4) & 0xF;
int hatdir = val & 0xF;
Uint8 hatval = SDL_JoystickGetHat(Joystick, hatnum);
bool pressed = false;
if (hatdir == 0x1) pressed = (hatval & SDL_HAT_UP);
else if (hatdir == 0x4) pressed = (hatval & SDL_HAT_DOWN);
else if (hatdir == 0x2) pressed = (hatval & SDL_HAT_RIGHT);
else if (hatdir == 0x8) pressed = (hatval & SDL_HAT_LEFT);
if (pressed) return true;
}
else
{
int btnnum = val & 0xFFFF;
Uint8 btnval = SDL_JoystickGetButton(Joystick, btnnum);
if (btnval) return true;
}
}
if (val & 0x10000)
{
int axisnum = (val >> 24) & 0xF;
int axisdir = (val >> 20) & 0xF;
Sint16 axisval = SDL_JoystickGetAxis(Joystick, axisnum);
switch (axisdir)
{
case 0: // positive
if (axisval > 16384) return true;
break;
case 1: // negative
if (axisval < -16384) return true;
break;
case 2: // trigger
if (axisval > 0) return true;
break;
}
}
return false;
}
void Process()
{
SDL_JoystickUpdate();
if (Joystick)
{
if (!SDL_JoystickGetAttached(Joystick))
{
SDL_JoystickClose(Joystick);
Joystick = NULL;
}
}
if (!Joystick && (SDL_NumJoysticks() > 0))
{
JoystickID = Config::JoystickID;
OpenJoystick();
}
JoyInputMask = 0xFFF;
if (Joystick)
{
for (int i = 0; i < 12; i++)
if (JoystickButtonDown(Config::JoyMapping[i]))
JoyInputMask &= ~(1 << i);
}
InputMask = KeyInputMask & JoyInputMask;
JoyHotkeyMask = 0;
if (Joystick)
{
for (int i = 0; i < HK_MAX; i++)
if (JoystickButtonDown(Config::HKJoyMapping[i]))
JoyHotkeyMask |= (1 << i);
}
HotkeyMask = KeyHotkeyMask | JoyHotkeyMask;
HotkeyPress = HotkeyMask & ~LastHotkeyMask;
HotkeyRelease = LastHotkeyMask & ~HotkeyMask;
LastHotkeyMask = HotkeyMask;
}
bool HotkeyDown(int id) { return HotkeyMask & (1<<id); }
bool HotkeyPressed(int id) { return HotkeyPress & (1<<id); }
bool HotkeyReleased(int id) { return HotkeyRelease & (1<<id); }
// distinguish between left and right modifier keys (Ctrl, Alt, Shift)
// Qt provides no real cross-platform way to do this, so here we go
// for Windows and Linux we can distinguish via scancodes (but both
// provide different scancodes)
#ifdef __WIN32__
bool IsRightModKey(QKeyEvent* event)
{
quint32 scan = event->nativeScanCode();
return (scan == 0x11D || scan == 0x138 || scan == 0x36);
}
#elif __APPLE__
bool IsRightModKey(QKeyEvent* event)
{
quint32 scan = event->nativeVirtualKey();
return (scan == 0x36 || scan == 0x3C || scan == 0x3D || scan == 0x3E);
}
#else
bool IsRightModKey(QKeyEvent* event)
{
quint32 scan = event->nativeScanCode();
return (scan == 0x69 || scan == 0x6C || scan == 0x3E);
}
#endif
}
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