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gp2xsdl-events.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.

 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "common/scummsys.h"

#if defined(GP2X_OLD)

#include "backends/events/gp2xsdl/gp2xsdl-events.h"
#include "backends/platform/gp2x/gp2x-hw.h"
#include "backends/graphics/gp2xsdl/gp2xsdl-graphics.h"

#include "backends/platform/sdl/sdl.h"

// FIXME move joystick defines out and replace with confile file options
// we should really allow users to map any key to a joystick button using the keymapper.
#define JOY_DEADZONE 2200

#define JOY_XAXIS 0
#define JOY_YAXIS 1

/* Quick default button states for modifiers. */
int BUTTON_STATE_L                              =     false;

enum {
      /* DPAD/Stick */
      BUTTON_UP               = 0,
      BUTTON_UPLEFT           = 1,
      BUTTON_LEFT             = 2,
      BUTTON_DOWNLEFT         = 3,
      BUTTON_DOWN             = 4,
      BUTTON_DOWNRIGHT  = 5,
      BUTTON_RIGHT            = 6,
      BUTTON_UPRIGHT          = 7,
      /* Joystick Buttons */
      BUTTON_MENU             = 8,  // Start on F100 GP2X
      BUTTON_SELECT           = 9,
      BUTTON_L                = 10,
      BUTTON_R                = 11,
      BUTTON_A                = 12,
      BUTTON_B                = 13,
      BUTTON_X                = 14,
      BUTTON_Y                = 15,
      BUTTON_VOLUP            = 16,
      BUTTON_VOLDOWN          = 17,
      BUTTON_CLICK            = 18
};

enum {
      /* Unused Joystick Buttons on the GP2X */
      BUTTON_HOME             = 51,
      BUTTON_HOLD             = 52,
      BUTTON_HELP             = 53,
      BUTTON_HELP2            = 54
};

enum {
      /* Touchscreen TapMode */
      TAPMODE_LEFT            = 0,
      TAPMODE_RIGHT           = 1,
      TAPMODE_HOVER           = 2
};

GP2XSdlEventSource::GP2XSdlEventSource()
      : _buttonStateL(false){
}

void GP2XSdlEventSource::SDLModToOSystemKeyFlags(SDLMod mod, Common::Event &event) {
      event.kbd.flags = 0;

      if (mod & KMOD_SHIFT)
            event.kbd.flags |= Common::KBD_SHIFT;
      if (mod & KMOD_ALT)
            event.kbd.flags |= Common::KBD_ALT;
      if (mod & KMOD_CTRL)
            event.kbd.flags |= Common::KBD_CTRL;

      // Sticky flags
      if (mod & KMOD_NUM)
            event.kbd.flags |= Common::KBD_NUM;
      if (mod & KMOD_CAPS)
            event.kbd.flags |= Common::KBD_CAPS;
}

void GP2XSdlEventSource::moveStick() {
      bool stickBtn[32];

      memcpy(stickBtn, _stickBtn, sizeof(stickBtn));

      if ((stickBtn[0])||(stickBtn[2])||(stickBtn[4])||(stickBtn[6]))
            stickBtn[1] = stickBtn[3] = stickBtn[5] = stickBtn[7] = 0;

      if ((stickBtn[1])||(stickBtn[2])||(stickBtn[3])) {
            if (_km.x_down_count!=2) {
                  _km.x_vel = -1;
                  _km.x_down_count = 1;
            } else
                  _km.x_vel = -4;
      } else if ((stickBtn[5])||(stickBtn[6])||(stickBtn[7])) {
            if (_km.x_down_count!=2) {
                  _km.x_vel = 1;
                  _km.x_down_count = 1;
            } else
                  _km.x_vel = 4;
      } else {
            _km.x_vel = 0;
            _km.x_down_count = 0;
      }

      if ((stickBtn[0])||(stickBtn[1])||(stickBtn[7])) {
            if (_km.y_down_count!=2) {
                  _km.y_vel = -1;
                  _km.y_down_count = 1;
            } else
                  _km.y_vel = -4;
      } else if ((stickBtn[3])||(stickBtn[4])||(stickBtn[5])) {
            if (_km.y_down_count!=2) {
                  _km.y_vel = 1;
                  _km.y_down_count = 1;
            } else
                  _km.y_vel = 4;
      } else {
            _km.y_vel = 0;
            _km.y_down_count = 0;
      }
}

/* GP2X Input mappings.
Single Button

Movement:

GP2X_BUTTON_UP              Cursor Up
GP2X_BUTTON_DOWN            Cursor Down
GP2X_BUTTON_LEFT            Cursor Left
GP2X_BUTTON_RIGHT           Cursor Right

GP2X_BUTTON_UPLEFT          Cursor Up Left
GP2X_BUTTON_UPRIGHT         Cursor Up Right
GP2X_BUTTON_DOWNLEFT        Cursor Down Left
GP2X_BUTTON_DOWNRIGHT       Cursor Down Right

Button Emulation:

GP2X_BUTTON_CLICK           Left Mouse Click (GP2X only)
GP2X_BUTTON_A                       . (Period)
GP2X_BUTTON_B               Left Mouse Click
GP2X_BUTTON_Y               Space Bar
GP2X_BUTTON_X               Right Mouse Click
GP2X_BUTTON_L                       Combo Modifier (Left Trigger)
GP2X_BUTTON_R               Return (Right Trigger)
GP2X_BUTTON_MENU              F5 (Game Menu)
GP2X_BUTTON_SELECT          Escape
GP2X_BUTTON_VOLUP           /dev/mixer Global Volume Up
GP2X_BUTTON_VOLDOWN         /dev/mixer Global Volume Down

Combos:

GP2X_BUTTON_VOLUP &     GP2X_BUTTON_VOLDOWN           0 (For Monkey 2 CP) or Virtual Keyboard if enabled
GP2X_BUTTON_L &   GP2X_BUTTON_SELECT                  Common::EVENT_QUIT (Calls Sync() to make sure SD is flushed)
GP2X_BUTTON_L &   GP2X_BUTTON_MENU              Common::EVENT_MAINMENU (ScummVM Global Main Menu)
GP2X_BUTTON_L &   GP2X_BUTTON_A                       Common::EVENT_PREDICTIVE_DIALOG for predictive text entry box (AGI games)
GP2X_BUTTON_L &   GP2X_BUTTON_Y                       Toggles setZoomOnMouse() for larger then 320*240 games to scale to the point + raduis. (GP2X only)
*/

bool GP2XSdlEventSource::handleKeyDown(SDL_Event &ev, Common::Event &event) {
      SDLModToOSystemKeyFlags(SDL_GetModState(), event);

      if (remapKey(ev, event))
            return true;

      event.type = Common::EVENT_KEYDOWN;
      event.kbd.keycode = (Common::KeyCode)ev.key.keysym.sym;
      event.kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode);

      return true;
}

bool GP2XSdlEventSource::handleJoyButtonDown(SDL_Event &ev, Common::Event &event) {

      _stickBtn[ev.jbutton.button] = 1;
      event.kbd.flags = 0;

      switch (ev.jbutton.button) {
      case BUTTON_UP:
      case BUTTON_UPLEFT:
      case BUTTON_LEFT:
      case BUTTON_DOWNLEFT:
      case BUTTON_DOWN:
      case BUTTON_DOWNRIGHT:
      case BUTTON_RIGHT:
      case BUTTON_UPRIGHT:
            moveStick();
            event.type = Common::EVENT_MOUSEMOVE;
            fillMouseEvent(event, _km.x, _km.y);
            break;
      case BUTTON_B:
      case BUTTON_CLICK:
            if (BUTTON_STATE_L == true) {
                  ((GP2XSdlGraphicsManager *)((OSystem_SDL *)g_system)->getGraphicsManager())->toggleZoomOnMouse();
                  fillMouseEvent(event, _km.x, _km.y);
            } else {
                  event.type = Common::EVENT_LBUTTONDOWN;
                  fillMouseEvent(event, _km.x, _km.y);
            }
            break;
      case BUTTON_X:
            event.type = Common::EVENT_RBUTTONDOWN;
            fillMouseEvent(event, _km.x, _km.y);
            break;
      case BUTTON_L:
            BUTTON_STATE_L = true;
            break;
      case BUTTON_R:
            event.type = Common::EVENT_KEYDOWN;
            if (BUTTON_STATE_L == true) {
#ifdef ENABLE_VKEYBD
                  event.kbd.keycode = Common::KEYCODE_F7;
                  event.kbd.ascii = mapKey(SDLK_F7, ev.key.keysym.mod, 0);
#else
                  event.kbd.keycode = Common::KEYCODE_0;
                  event.kbd.ascii = mapKey(SDLK_0, ev.key.keysym.mod, 0);
#endif
            } else {
                  event.kbd.keycode = Common::KEYCODE_RETURN;
                  event.kbd.ascii = mapKey(SDLK_RETURN, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_SELECT:
      case BUTTON_HOME:
            event.type = Common::EVENT_KEYDOWN;
            if (BUTTON_STATE_L == true) {
                  event.type = Common::EVENT_QUIT;
            } else {
                  event.kbd.keycode = Common::KEYCODE_ESCAPE;
                  event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_A:
            event.type = Common::EVENT_KEYDOWN;
            if (BUTTON_STATE_L == true) {
                  event.type = Common::EVENT_PREDICTIVE_DIALOG;
            } else {
            event.kbd.keycode = Common::KEYCODE_PERIOD;
            event.kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_Y:
            event.type = Common::EVENT_KEYDOWN;
            if (BUTTON_STATE_L == true) {
                  GPH::ToggleTapMode();
                  if (GPH::tapmodeLevel == TAPMODE_LEFT) {
                        g_system->displayMessageOnOSD("Touchscreen 'Tap Mode' - Left Click");
                  } else if (GPH::tapmodeLevel == TAPMODE_RIGHT) {
                        g_system->displayMessageOnOSD("Touchscreen 'Tap Mode' - Right Click");
                  } else if (GPH::tapmodeLevel == TAPMODE_HOVER) {
                        g_system->displayMessageOnOSD("Touchscreen 'Tap Mode' - Hover (No Click)");
                  }
            } else {
                  event.kbd.keycode = Common::KEYCODE_SPACE;
                  event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_MENU:
      case BUTTON_HELP:
            event.type = Common::EVENT_KEYDOWN;
            if (BUTTON_STATE_L == true) {
                  event.type = Common::EVENT_MAINMENU;
            } else {
                  event.kbd.keycode = Common::KEYCODE_F5;
                  event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_VOLUP:
            GP2X_HW::mixerMoveVolume(2);
            if (GP2X_HW::volumeLevel == 100) {
                  g_system->displayMessageOnOSD("Maximum Volume");
            } else {
                  g_system->displayMessageOnOSD("Increasing Volume");
            }
            break;

      case BUTTON_VOLDOWN:
            GP2X_HW::mixerMoveVolume(1);
            if (GP2X_HW::volumeLevel == 0) {
                  g_system->displayMessageOnOSD("Minimal Volume");
            } else {
                  g_system->displayMessageOnOSD("Decreasing Volume");
            }
            break;
      case BUTTON_HOLD:
            event.type = Common::EVENT_QUIT;
            break;
      case BUTTON_HELP2:
            GPH::ToggleTapMode();
            if (GPH::tapmodeLevel == TAPMODE_LEFT) {
                  g_system->displayMessageOnOSD("Touchscreen 'Tap Mode': Left Click");
            } else if (GPH::tapmodeLevel == TAPMODE_RIGHT) {
                  g_system->displayMessageOnOSD("Touchscreen 'Tap Mode': Right Click");
            } else if (GPH::tapmodeLevel == TAPMODE_HOVER) {
                  g_system->displayMessageOnOSD("Touchscreen 'Tap Mode': Hover (No Click)");
            }
            break;
      }
      return true;
}

bool GP2XSdlEventSource::handleJoyButtonUp(SDL_Event &ev, Common::Event &event) {
      _stickBtn[ev.jbutton.button] = 0;
      event.kbd.flags = 0;

      switch (ev.jbutton.button) {
      case BUTTON_UP:
      case BUTTON_UPLEFT:
      case BUTTON_LEFT:
      case BUTTON_DOWNLEFT:
      case BUTTON_DOWN:
      case BUTTON_DOWNRIGHT:
      case BUTTON_RIGHT:
      case BUTTON_UPRIGHT:
            moveStick();
            event.type = Common::EVENT_MOUSEMOVE;
            fillMouseEvent(event, _km.x, _km.y);
            break;
      case BUTTON_B:
      case BUTTON_CLICK:
            if (BUTTON_STATE_L == true) {
                  break;
            } else {
                  event.type = Common::EVENT_LBUTTONUP;
                  fillMouseEvent(event, _km.x, _km.y);
            }
            break;
      case BUTTON_X:
            event.type = Common::EVENT_RBUTTONUP;
            fillMouseEvent(event, _km.x, _km.y);
            break;
      case BUTTON_L:
            BUTTON_STATE_L = false;
            break;
      case BUTTON_SELECT:
      case BUTTON_HOME:
            event.type = Common::EVENT_KEYUP;
            event.kbd.keycode = Common::KEYCODE_ESCAPE;
            event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
            break;
      case BUTTON_A:
            event.type = Common::EVENT_KEYUP;
            event.kbd.keycode = Common::KEYCODE_PERIOD;
            event.kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0);
            break;
      case BUTTON_Y:
            event.type = Common::EVENT_KEYUP;
            event.kbd.keycode = Common::KEYCODE_SPACE;
            event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
            break;
      case BUTTON_MENU:
      case BUTTON_HELP:
            event.type = Common::EVENT_KEYUP;
            if (BUTTON_STATE_L == true) {
                  event.type = Common::EVENT_MAINMENU;
            } else {
                  event.kbd.keycode = Common::KEYCODE_F5;
                  event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_R:
            event.type = Common::EVENT_KEYUP;
            if (BUTTON_STATE_L == true) {
#ifdef ENABLE_VKEYBD
                  event.kbd.keycode = Common::KEYCODE_F7;
                  event.kbd.ascii = mapKey(SDLK_F7, ev.key.keysym.mod, 0);
#else
                  event.kbd.keycode = Common::KEYCODE_0;
                  event.kbd.ascii = mapKey(SDLK_0, ev.key.keysym.mod, 0);
#endif
            } else {
                  event.kbd.keycode = Common::KEYCODE_RETURN;
                  event.kbd.ascii = mapKey(SDLK_RETURN, ev.key.keysym.mod, 0);
            }
            break;
      case BUTTON_VOLUP:
            break;
      case BUTTON_VOLDOWN:
            break;
      case BUTTON_HOLD:
            break;
      case BUTTON_HELP2:
            break;
      }
      return true;
}

bool GP2XSdlEventSource::handleJoyAxisMotion(SDL_Event &ev, Common::Event &event) {
      int axis = ev.jaxis.value;
      if ( axis > JOY_DEADZONE) {
            axis -= JOY_DEADZONE;
            event.type = Common::EVENT_MOUSEMOVE;
      } else if ( axis < -JOY_DEADZONE ) {
            axis += JOY_DEADZONE;
            event.type = Common::EVENT_MOUSEMOVE;
      } else
            axis = 0;

      if ( ev.jaxis.axis == JOY_XAXIS) {
#ifdef JOY_ANALOG
            _km.x_vel = axis/2000;
            _km.x_down_count = 0;
#else
            if (axis != 0) {
                  _km.x_vel = (axis > 0) ? 1:-1;
                  _km.x_down_count = 1;
            } else {
                  _km.x_vel = 0;
                  _km.x_down_count = 0;
            }
#endif

      } else if (ev.jaxis.axis == JOY_YAXIS) {
#ifndef JOY_INVERT_Y
            axis = -axis;
#endif
#ifdef JOY_ANALOG
            _km.y_vel = -axis / 2000;
            _km.y_down_count = 0;
#else
            if (axis != 0) {
                  _km.y_vel = (-axis > 0) ? 1: -1;
                  _km.y_down_count = 1;
            } else {
                  _km.y_vel = 0;
                  _km.y_down_count = 0;
            }
#endif
      }

      fillMouseEvent(event, _km.x, _km.y);
      return true;
}

bool GP2XSdlEventSource::remapKey(SDL_Event &ev, Common::Event &event) {
      return false;
}

#endif

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