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Diffstat (limited to 'src/frontend/qt_sdl/Input.cpp')
| -rw-r--r-- | src/frontend/qt_sdl/Input.cpp | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/frontend/qt_sdl/Input.cpp b/src/frontend/qt_sdl/Input.cpp new file mode 100644 index 0000000..84d20ad --- /dev/null +++ b/src/frontend/qt_sdl/Input.cpp @@ -0,0 +1,244 @@ +/* + Copyright 2016-2020 Arisotura + + 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 "PlatformConfig.h" + + +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 & ~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 & ~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); +} + + +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; + for (int i = 0; i < 12; i++) + if (JoystickButtonDown(Config::JoyMapping[i])) + JoyInputMask &= ~(1<<i); + + InputMask = KeyInputMask & JoyInputMask; + + JoyHotkeyMask = 0; + 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); } + + +// TODO: MacOS version of this! +// 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); +} +#else +bool IsRightModKey(QKeyEvent* event) +{ + quint32 scan = event->nativeScanCode(); + return (scan == 0x69 || scan == 0x6C || scan == 0x3E); +} +#endif + +} |