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/* -*- mode: c; tab-width: 4; c-basic-offset: 4; c-file-style: "linux" -*- */
//
// Copyright (c) 2009-2011, Wei Mingzhi <whistler_wmz@users.sf.net>.
// Copyright (c) 2011-2022, SDLPAL development team.
// All rights reserved.
//
// This file is part of SDLPAL.
//
// SDLPAL is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 3
// as published by the Free Software Foundation.
//
// 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, see <http://www.gnu.org/licenses/>.
//
#include "main.h"
#include <math.h>
volatile PALINPUTSTATE g_InputState;
#if PAL_HAS_JOYSTICKS
static SDL_Joystick *g_pJoy = NULL;
#endif
#if !SDL_VERSION_ATLEAST(2,0,0)
# define SDLK_KP_1 SDLK_KP1
# define SDLK_KP_2 SDLK_KP2
# define SDLK_KP_3 SDLK_KP3
# define SDLK_KP_4 SDLK_KP4
# define SDLK_KP_5 SDLK_KP5
# define SDLK_KP_6 SDLK_KP6
# define SDLK_KP_7 SDLK_KP7
# define SDLK_KP_8 SDLK_KP8
# define SDLK_KP_9 SDLK_KP9
# define SDLK_KP_0 SDLK_KP0
# define SDL_JoystickNameForIndex SDL_JoystickName
# define SDL_GetKeyboardState SDL_GetKeyState
# define SDL_GetScancodeFromKey(x) (x)
#endif
BOOL g_fUseJoystick = TRUE;
static void _default_init_filter() {}
static int _default_input_event_filter(const SDL_Event *event, volatile PALINPUTSTATE *state) { return 0; }
static void _default_input_shutdown_filter() {}
static void (*input_init_filter)() = _default_init_filter;
static int (*input_event_filter)(const SDL_Event *, volatile PALINPUTSTATE *) = _default_input_event_filter;
static void (*input_shutdown_filter)() = _default_input_shutdown_filter;
static const int g_KeyMap[][2] = {
{ SDLK_UP, kKeyUp },
{ SDLK_KP_8, kKeyUp },
{ SDLK_DOWN, kKeyDown },
{ SDLK_KP_2, kKeyDown },
{ SDLK_LEFT, kKeyLeft },
{ SDLK_KP_4, kKeyLeft },
{ SDLK_RIGHT, kKeyRight },
{ SDLK_KP_6, kKeyRight },
{ SDLK_ESCAPE, kKeyMenu },
{ SDLK_INSERT, kKeyMenu },
{ SDLK_LALT, kKeyMenu },
{ SDLK_RALT, kKeyMenu },
{ SDLK_KP_0, kKeyMenu },
{ SDLK_RETURN, kKeySearch },
{ SDLK_SPACE, kKeySearch },
{ SDLK_KP_ENTER, kKeySearch },
{ SDLK_LCTRL, kKeySearch },
{ SDLK_PAGEUP, kKeyPgUp },
{ SDLK_KP_9, kKeyPgUp },
{ SDLK_PAGEDOWN, kKeyPgDn },
{ SDLK_KP_3, kKeyPgDn },
{ SDLK_HOME, kKeyHome },
{ SDLK_KP_7, kKeyHome },
{ SDLK_END, kKeyEnd },
{ SDLK_KP_1, kKeyEnd },
{ SDLK_r, kKeyRepeat },
{ SDLK_a, kKeyAuto },
{ SDLK_d, kKeyDefend },
{ SDLK_e, kKeyUseItem },
{ SDLK_w, kKeyThrowItem },
{ SDLK_q, kKeyFlee },
{ SDLK_f, kKeyForce },
{ SDLK_s, kKeyStatus }
};
static VOID
PAL_KeyDown(
INT key,
BOOL fRepeat
)
/*++
Purpose:
Called when user pressed a key.
Parameters:
[IN] key - keycode of the pressed key.
Return value:
None.
--*/
{
switch (key)
{
case kKeyUp:
if (g_InputState.dir != kDirNorth && !fRepeat)
{
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirNorth;
}
g_InputState.dwKeyPress |= kKeyUp;
break;
case kKeyDown:
if (g_InputState.dir != kDirSouth && !fRepeat)
{
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirSouth;
}
g_InputState.dwKeyPress |= kKeyDown;
break;
case kKeyLeft:
if (g_InputState.dir != kDirWest && !fRepeat)
{
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirWest;
}
g_InputState.dwKeyPress |= kKeyLeft;
break;
case kKeyRight:
if (g_InputState.dir != kDirEast && !fRepeat)
{
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirEast;
}
g_InputState.dwKeyPress |= kKeyRight;
break;
default:
g_InputState.dwKeyPress |= key;
break;
}
}
static VOID
PAL_KeyUp(
INT key
)
/*++
Purpose:
Called when user released a key.
Parameters:
[IN] key - keycode of the released key.
Return value:
None.
--*/
{
switch (key)
{
case kKeyUp:
if (g_InputState.dir == kDirNorth)
{
g_InputState.dir = g_InputState.prevdir;
}
g_InputState.prevdir = kDirUnknown;
break;
case kKeyDown:
if (g_InputState.dir == kDirSouth)
{
g_InputState.dir = g_InputState.prevdir;
}
g_InputState.prevdir = kDirUnknown;
break;
case kKeyLeft:
if (g_InputState.dir == kDirWest)
{
g_InputState.dir = g_InputState.prevdir;
}
g_InputState.prevdir = kDirUnknown;
break;
case kKeyRight:
if (g_InputState.dir == kDirEast)
{
g_InputState.dir = g_InputState.prevdir;
}
g_InputState.prevdir = kDirUnknown;
break;
default:
break;
}
}
static VOID
PAL_UpdateKeyboardState(
VOID
)
/*++
Purpose:
Poll & update keyboard state.
Parameters:
None.
Return value:
None.
--*/
{
static DWORD rgdwKeyLastTime[sizeof(g_KeyMap) / sizeof(g_KeyMap[0])] = {0};
LPCBYTE keyState = (LPCBYTE)SDL_GetKeyboardState(NULL);
int i;
DWORD dwCurrentTime = SDL_GetTicks();
for (i = 0; i < sizeof(g_KeyMap) / sizeof(g_KeyMap[0]); i++)
{
if (keyState[SDL_GetScancodeFromKey(g_KeyMap[i][0])])
{
if (dwCurrentTime > rgdwKeyLastTime[i])
{
PAL_KeyDown(g_KeyMap[i][1], (rgdwKeyLastTime[i] != 0));
if (gConfig.fEnableKeyRepeat)
{
rgdwKeyLastTime[i] = dwCurrentTime + (rgdwKeyLastTime[i] == 0 ? 200 : 75);
}
else
{
rgdwKeyLastTime[i] = 0xFFFFFFFF;
}
}
}
else
{
if (rgdwKeyLastTime[i] != 0)
{
PAL_KeyUp(g_KeyMap[i][1]);
rgdwKeyLastTime[i] = 0;
}
}
}
}
static VOID
PAL_KeyboardEventFilter(
const SDL_Event *lpEvent
)
/*++
Purpose:
Handle keyboard events.
Parameters:
[IN] lpEvent - pointer to the event.
Return value:
None.
--*/
{
if (lpEvent->type == SDL_KEYDOWN)
{
//
// Pressed a key
//
if (lpEvent->key.keysym.mod & KMOD_ALT)
{
if (lpEvent->key.keysym.sym == SDLK_RETURN)
{
//
// Pressed Alt+Enter (toggle fullscreen)...
//
VIDEO_ToggleFullscreen();
return;
}
else if (lpEvent->key.keysym.sym == SDLK_F4)
{
//
// Pressed Alt+F4 (Exit program)...
//
PAL_Shutdown(0);
}
}
else if (lpEvent->key.keysym.sym == SDLK_p)
{
VIDEO_SaveScreenshot();
}
#if PAL_HAS_GLSL
else if (lpEvent->key.keysym.sym == SDLK_z)
{
Filter_StepParamSlot(1);
}
else if (lpEvent->key.keysym.sym == SDLK_x)
{
Filter_StepParamSlot(-1);
}
else if (lpEvent->key.keysym.sym == SDLK_COMMA)
{
Filter_StepCurrentParam(1);
}
else if (lpEvent->key.keysym.sym == SDLK_PERIOD)
{
Filter_StepCurrentParam(-1);
}
#endif
}
}
static VOID
PAL_MouseEventFilter(
const SDL_Event *lpEvent
)
/*++
Purpose:
Handle mouse events.
Parameters:
[IN] lpEvent - pointer to the event.
Return value:
None.
--*/
{
#if PAL_HAS_MOUSE
static short hitTest = 0; // Double click detect;
const SDL_VideoInfo *vi;
double screenWidth, gridWidth;
double screenHeight, gridHeight;
double mx, my;
double thumbx;
double thumby;
INT gridIndex;
BOOL isLeftMouseDBClick = FALSE;
BOOL isLeftMouseClick = FALSE;
BOOL isRightMouseClick = FALSE;
static INT lastReleaseButtonTime, lastPressButtonTime, betweenTime;
static INT lastPressx = 0;
static INT lastPressy = 0;
static INT lastReleasex = 0;
static INT lastReleasey = 0;
if (lpEvent->type!= SDL_MOUSEBUTTONDOWN && lpEvent->type != SDL_MOUSEBUTTONUP)
return;
vi = SDL_GetVideoInfo();
screenWidth = vi->current_w;
screenHeight = vi->current_h;
gridWidth = screenWidth / 3;
gridHeight = screenHeight / 3;
mx = lpEvent->button.x;
my = lpEvent->button.y;
thumbx = ceil(mx / gridWidth);
thumby = floor(my / gridHeight);
gridIndex = thumbx + thumby * 3 - 1;
switch (lpEvent->type)
{
case SDL_MOUSEBUTTONDOWN:
lastPressButtonTime = SDL_GetTicks();
lastPressx = lpEvent->button.x;
lastPressy = lpEvent->button.y;
switch (gridIndex)
{
case 2:
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirNorth;
break;
case 6:
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirSouth;
break;
case 0:
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirWest;
break;
case 8:
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirEast;
break;
case 1:
//g_InputState.prevdir = g_InputState.dir;
//g_InputState.dir = kDirNorth;
g_InputState.dwKeyPress |= kKeyUp;
break;
case 7:
//g_InputState.prevdir = g_InputState.dir;
//g_InputState.dir = kDirSouth;
g_InputState.dwKeyPress |= kKeyDown;
break;
case 3:
//g_InputState.prevdir = g_InputState.dir;
//g_InputState.dir = kDirWest;
g_InputState.dwKeyPress |= kKeyLeft;
break;
case 5:
//g_InputState.prevdir = g_InputState.dir;
//g_InputState.dir = kDirEast;
g_InputState.dwKeyPress |= kKeyRight;
break;
}
break;
case SDL_MOUSEBUTTONUP:
lastReleaseButtonTime = SDL_GetTicks();
lastReleasex = lpEvent->button.x;
lastReleasey = lpEvent->button.y;
hitTest ++;
if (abs(lastPressx - lastReleasex) < 25 &&
abs(lastPressy - lastReleasey) < 25)
{
betweenTime = lastReleaseButtonTime - lastPressButtonTime;
if (betweenTime >500)
{
isRightMouseClick = TRUE;
}
else if (betweenTime >=0)
{
if((betweenTime < 100) && (hitTest >= 2))
{
isLeftMouseClick = TRUE;
hitTest = 0;
}
else
{
isLeftMouseClick = TRUE;
if(betweenTime > 100)
{
hitTest = 0;
}
}
}
}
switch (gridIndex)
{
case 2:
if( isLeftMouseDBClick )
{
AUDIO_IncreaseVolume();
break;
}
case 6:
case 0:
if( isLeftMouseDBClick )
{
AUDIO_DecreaseVolume();
break;
}
case 7:
if (isRightMouseClick) //repeat attack
{
g_InputState.dwKeyPress |= kKeyRepeat;
break;
}
case 8:
g_InputState.dir = kDirUnknown;
g_InputState.prevdir = kDirUnknown;
break;
case 1:
if( isRightMouseClick )
{
g_InputState.dwKeyPress |= kKeyForce;
}
break;
case 3:
if( isRightMouseClick )
{
g_InputState.dwKeyPress |= kKeyAuto;
}
break;
case 5:
if( isRightMouseClick )
{
g_InputState.dwKeyPress |= kKeyDefend;
}
break;
case 4:
if (isRightMouseClick) // menu
{
g_InputState.dwKeyPress |= kKeyMenu;
}
else if (isLeftMouseClick) // search
{
g_InputState.dwKeyPress |= kKeySearch;
}
break;
}
break;
}
#endif
}
static VOID
PAL_JoystickEventFilter(
const SDL_Event *lpEvent
)
/*++
Purpose:
Handle joystick events.
Parameters:
[IN] lpEvent - pointer to the event.
Return value:
None.
--*/
{
#if PAL_HAS_JOYSTICKS
switch (lpEvent->type)
{
case SDL_JOYAXISMOTION:
g_InputState.joystickNeedUpdate = TRUE;
//
// Moved an axis on joystick
//
switch (lpEvent->jaxis.axis)
{
case 0:
//
// X axis
//
if (lpEvent->jaxis.value > 3200)
{
g_InputState.axisX = 1;
}
else if (lpEvent->jaxis.value < -3200)
{
g_InputState.axisX = -1;
}
else
{
g_InputState.axisX = 0;
}
break;
case 1:
//
// Y axis
//
if (lpEvent->jaxis.value > 3200)
{
g_InputState.axisY = 1;
}
else if (lpEvent->jaxis.value < -3200)
{
g_InputState.axisY = -1;
}
else
{
g_InputState.axisY = 0;
}
break;
}
break;
case SDL_JOYHATMOTION:
//
// Pressed the joystick hat button
//
switch (lpEvent->jhat.value)
{
case SDL_HAT_LEFT:
case SDL_HAT_LEFTUP:
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirWest;
g_InputState.dwKeyPress = kKeyLeft;
break;
case SDL_HAT_RIGHT:
case SDL_HAT_RIGHTDOWN:
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirEast;
g_InputState.dwKeyPress = kKeyRight;
break;
case SDL_HAT_UP:
case SDL_HAT_RIGHTUP:
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirNorth;
g_InputState.dwKeyPress = kKeyUp;
break;
case SDL_HAT_DOWN:
case SDL_HAT_LEFTDOWN:
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirSouth;
g_InputState.dwKeyPress = kKeyDown;
break;
case SDL_HAT_CENTERED:
g_InputState.prevdir = (gpGlobals->fInBattle ? kDirUnknown : g_InputState.dir);
g_InputState.dir = kDirUnknown;
g_InputState.dwKeyPress = kKeyNone;
break;
}
break;
case SDL_JOYBUTTONDOWN:
//
// Pressed the joystick button
//
switch (lpEvent->jbutton.button & 1)
{
case 0:
g_InputState.dwKeyPress |= kKeyMenu;
break;
case 1:
g_InputState.dwKeyPress |= kKeySearch;
break;
}
break;
}
#endif
}
#if PAL_HAS_JOYSTICKS
static VOID
PAL_UpdateJoyStickState(
VOID
)
/*++
Purpose:
Poll & update joystick state.
Parameters:
None.
Return value:
None.
--*/
{
if( g_InputState.axisX == 1 && g_InputState.axisY >= 0 )
{
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirEast;
g_InputState.dwKeyPress |= kKeyRight;
}
else if( g_InputState.axisX == -1 && g_InputState.axisY <= 0 )
{
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirWest;
g_InputState.dwKeyPress |= kKeyLeft;
}
else if( g_InputState.axisY == 1 && g_InputState.axisX <= 0 )
{
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirSouth;
g_InputState.dwKeyPress |= kKeyDown;
}
else if( g_InputState.axisY == -1 && g_InputState.axisX >= 0 )
{
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirNorth;
g_InputState.dwKeyPress |= kKeyUp;
}
else
{
g_InputState.prevdir = g_InputState.dir;
g_InputState.dir = kDirUnknown;
if(!input_event_filter)
g_InputState.dwKeyPress = kKeyNone;
}
}
#endif
#if PAL_HAS_TOUCH
#define TOUCH_NONE 0
#define TOUCH_UP 1
#define TOUCH_DOWN 2
#define TOUCH_LEFT 3
#define TOUCH_RIGHT 4
#define TOUCH_BUTTON1 5
#define TOUCH_BUTTON2 6
#define TOUCH_BUTTON3 7
#define TOUCH_BUTTON4 8
static float gfTouchXMin = 0.0f;
static float gfTouchXMax = 1.0f;
static float gfTouchYMin = 0.0f;
static float gfTouchYMax = 1.0f;
static SDL_TouchID gFinger1 = -1, gFinger2 = -1;
static DWORD g_dwFinger1Time = 0, g_dwFinger2Time = 0;
static int g_iPrevTouch1 = TOUCH_NONE;
static int g_iPrevTouch2 = TOUCH_NONE;
VOID
PAL_SetTouchBounds(
DWORD dwScreenWidth,
DWORD dwScreenHeight,
SDL_Rect renderRect
)
{
gfTouchXMin = (float)renderRect.x / dwScreenWidth;
gfTouchXMax = (float)(renderRect.x + renderRect.w) / dwScreenWidth;
gfTouchYMin = (float)renderRect.y / dwScreenHeight;
gfTouchYMax = (float)(renderRect.y + renderRect.h) / dwScreenHeight;
}
static int
PAL_GetTouchArea(
float X,
float Y
)
{
if (X < gfTouchXMin || X > gfTouchXMax || Y < 0.5f || Y > gfTouchYMax)
{
//
// Upper area or cropped area
//
return TOUCH_NONE;
}
else
{
X = (X - gfTouchXMin) / (gfTouchXMax - gfTouchXMin);
Y = (Y - gfTouchYMin) / (gfTouchYMax - gfTouchYMin);
}
if (X < 1.0f / 3)
{
if (Y - 0.5f < (1.0f / 6 - fabsf(X - 1.0f / 3 / 2)) * (0.5f / (1.0f / 3)))
{
return TOUCH_UP;
}
else if (Y - 0.75f > fabsf(X - 1.0f / 3 / 2) * (0.5f / (1.0f / 3)))
{
return TOUCH_DOWN;
}
else if (X < 1.0f / 3 / 2 && fabsf(Y - 0.75f) < 0.25f - X * (0.5f / (1.0f / 3)))
{
return TOUCH_LEFT;
}
else
{
return TOUCH_RIGHT;
}
}
else if (X > 1.0f - 1.0f / 3)
{
if (X < 1.0f - (1.0f / 3 / 2))
{
if (Y < 0.75f)
{
return TOUCH_BUTTON1;
}
else
{
return TOUCH_BUTTON3;
}
}
else
{
if (Y < 0.75f)
{
return TOUCH_BUTTON2;
}
else
{
return TOUCH_BUTTON4;
}
}
}
else
{
return TOUCH_NONE;
}
}
static VOID
PAL_SetTouchAction(
int area
)
{
switch (area)
{
case TOUCH_UP:
g_InputState.dir = kDirNorth;
g_InputState.dwKeyPress |= kKeyUp;
break;
case TOUCH_DOWN:
g_InputState.dir = kDirSouth;
g_InputState.dwKeyPress |= kKeyDown;
break;
case TOUCH_LEFT:
g_InputState.dir = kDirWest;
g_InputState.dwKeyPress |= kKeyLeft;
break;
case TOUCH_RIGHT:
g_InputState.dir = kDirEast;
g_InputState.dwKeyPress |= kKeyRight;
break;
case TOUCH_BUTTON1:
g_InputState.dwKeyPress |= kKeyForce;
break;
case TOUCH_BUTTON2:
g_InputState.dwKeyPress |= kKeyMenu;
break;
case TOUCH_BUTTON3:
if (gpGlobals->fInBattle)
{
g_InputState.dwKeyPress |= kKeyRepeat;
}
else
{
g_InputState.dwKeyPress |= kKeyUseItem;
}
break;
case TOUCH_BUTTON4:
g_InputState.dwKeyPress |= kKeySearch;
break;
}
}
static VOID
PAL_UnsetTouchAction(
int area
)
{
switch (area)
{
case TOUCH_UP:
case TOUCH_DOWN:
case TOUCH_LEFT:
case TOUCH_RIGHT:
g_InputState.dir = kDirUnknown;
break;
}
}
static VOID
PAL_TouchRepeatCheck(
VOID
)
{
if (!gConfig.fEnableKeyRepeat)
{
return;
}
if (gFinger1 != -1 && SDL_GetTicks() > g_dwFinger1Time)
{
PAL_UnsetTouchAction(g_iPrevTouch1);
PAL_SetTouchAction(g_iPrevTouch1);
g_dwFinger1Time = SDL_GetTicks() + 120;
}
if (gFinger2 != -1 && SDL_GetTicks() > g_dwFinger2Time)
{
PAL_UnsetTouchAction(g_iPrevTouch2);
PAL_SetTouchAction(g_iPrevTouch2);
g_dwFinger2Time = SDL_GetTicks() + 120;
}
}
#endif
static VOID
PAL_TouchEventFilter(
const SDL_Event *lpEvent
)
/*++
Purpose:
Handle touch events.
Parameters:
[IN] lpEvent - pointer to the event.
Return value:
None.
--*/
{
#if PAL_HAS_TOUCH
switch (lpEvent->type)
{
case SDL_FINGERDOWN:
if (gFinger1 == -1)
{
int area = PAL_GetTouchArea(lpEvent->tfinger.x, lpEvent->tfinger.y);
gFinger1 = lpEvent->tfinger.fingerId;
g_iPrevTouch1 = area;
PAL_SetTouchAction(area);
g_dwFinger1Time = SDL_GetTicks() + 500;
}
else if (gFinger2 == -1)
{
int area = PAL_GetTouchArea(lpEvent->tfinger.x, lpEvent->tfinger.y);
gFinger2 = lpEvent->tfinger.fingerId;
g_iPrevTouch2 = area;
PAL_SetTouchAction(area);
g_dwFinger2Time = SDL_GetTicks() + 500;
}
break;
case SDL_FINGERUP:
if (lpEvent->tfinger.fingerId == gFinger1)
{
PAL_UnsetTouchAction(g_iPrevTouch1);
gFinger1 = -1;
g_iPrevTouch1 = TOUCH_NONE;
}
else if (lpEvent->tfinger.fingerId == gFinger2)
{
PAL_UnsetTouchAction(g_iPrevTouch2);
gFinger2 = -1;
g_iPrevTouch2 = TOUCH_NONE;
}
break;
case SDL_FINGERMOTION:
if (lpEvent->tfinger.fingerId == gFinger1)
{
int area = PAL_GetTouchArea(lpEvent->tfinger.x, lpEvent->tfinger.y);
if (g_iPrevTouch1 != area && area != TOUCH_NONE)
{
PAL_UnsetTouchAction(g_iPrevTouch1);
g_iPrevTouch1 = area;
PAL_SetTouchAction(area);
g_dwFinger1Time = SDL_GetTicks() + 500;
}
}
else if (lpEvent->tfinger.fingerId == gFinger2)
{
int area = PAL_GetTouchArea(lpEvent->tfinger.x, lpEvent->tfinger.y);
if (g_iPrevTouch2 != area && area != TOUCH_NONE)
{
PAL_UnsetTouchAction(g_iPrevTouch2);
g_iPrevTouch2 = area;
PAL_SetTouchAction(area);
g_dwFinger2Time = SDL_GetTicks() + 500;
}
}
break;
}
#endif
}
static int SDLCALL
PAL_EventFilter(
const SDL_Event *lpEvent
)
/*++
Purpose:
SDL event filter function. A filter to process all events.
Parameters:
[IN] lpEvent - pointer to the event.
Return value:
1 = the event will be added to the internal queue.
0 = the event will be dropped from the queue.
--*/
{
switch (lpEvent->type)
{
#if SDL_VERSION_ATLEAST(2,0,0)
case SDL_WINDOWEVENT:
if (lpEvent->window.event == SDL_WINDOWEVENT_RESIZED)
{
//
// resized the window
//
VIDEO_Resize(lpEvent->window.data1, lpEvent->window.data2);
}
break;
case SDL_APP_WILLENTERBACKGROUND:
g_bRenderPaused = TRUE;
break;
case SDL_APP_DIDENTERFOREGROUND:
g_bRenderPaused = FALSE;
VIDEO_UpdateScreen(NULL);
break;
#else
case SDL_VIDEORESIZE:
//
// resized the window
//
VIDEO_Resize(lpEvent->resize.w, lpEvent->resize.h);
break;
#endif
case SDL_QUIT:
//
// clicked on the close button of the window. Quit immediately.
//
PAL_Shutdown(0);
}
PAL_KeyboardEventFilter(lpEvent);
PAL_MouseEventFilter(lpEvent);
PAL_JoystickEventFilter(lpEvent);
PAL_TouchEventFilter(lpEvent);
//
// All events are handled here; don't put anything to the internal queue
//
return 0;
}
VOID
PAL_ClearKeyState(
VOID
)
/*++
Purpose:
Clear the record of pressed keys.
Parameters:
None.
Return value:
None.
--*/
{
g_InputState.dwKeyPress = 0;
}
VOID
PAL_InitInput(
VOID
)
/*++
Purpose:
Initialize the input subsystem.
Parameters:
None.
Return value:
None.
--*/
{
memset((void *)&g_InputState, 0, sizeof(g_InputState));
g_InputState.dir = kDirUnknown;
g_InputState.prevdir = kDirUnknown;
//
// Check for joystick
//
#if PAL_HAS_JOYSTICKS
if (SDL_NumJoysticks() > 0 && g_fUseJoystick)
{
int i;
for (i = 0; i < SDL_NumJoysticks(); i++)
{
if (PAL_IS_VALID_JOYSTICK(SDL_JoystickNameForIndex(i)))
{
g_pJoy = SDL_JoystickOpen(i);
break;
}
}
if (g_pJoy != NULL)
{
SDL_JoystickEventState(SDL_ENABLE);
}
}
#endif
input_init_filter();
}
VOID
PAL_ShutdownInput(
VOID
)
/*++
Purpose:
Shutdown the input subsystem.
Parameters:
None.
Return value:
None.
--*/
{
#if PAL_HAS_JOYSTICKS
if (g_pJoy != NULL)
{
SDL_JoystickClose(g_pJoy);
g_pJoy = NULL;
}
#endif
input_shutdown_filter();
}
static int
PAL_PollEvent(
SDL_Event *event
)
/*++
Purpose:
Poll and process one event.
Parameters:
[OUT] event - Events polled from SDL.
Return value:
Return value of PAL_PollEvent.
--*/
{
SDL_Event evt;
int ret = SDL_PollEvent(&evt);
if (ret != 0 && !input_event_filter(&evt, &g_InputState))
{
PAL_EventFilter(&evt);
}
if (event != NULL)
{
*event = evt;
}
return ret;
}
VOID
PAL_ProcessEvent(
VOID
)
/*++
Purpose:
Process all events.
Parameters:
None.
Return value:
None.
--*/
{
#if PAL_HAS_JOYSTICKS
g_InputState.joystickNeedUpdate = FALSE;
#endif
while (PAL_PollEvent(NULL));
PAL_UpdateKeyboardState();
#if PAL_HAS_JOYSTICKS
if(g_InputState.joystickNeedUpdate)
PAL_UpdateJoyStickState();
#endif
#if PAL_HAS_TOUCH
PAL_TouchRepeatCheck();
#endif
}
VOID
PAL_RegisterInputFilter(
void (*init_filter)(),
int (*event_filter)(const SDL_Event *, volatile PALINPUTSTATE *),
void (*shutdown_filter)()
)
/*++
Purpose:
Register caller-defined input event filter.
Parameters:
[IN] init_filter - Filter that will be called inside PAL_InitInput
[IN] event_filter - Filter that will be called inside PAL_PollEvent,
return non-zero value from this filter disables
further internal event processing.
[IN] shutdown_filter - Filter that will be called inside PAL_ShutdownInput
Passing NULL to either parameter means the caller does not provide such filter.
Return value:
None.
--*/
{
if (init_filter)
input_init_filter = init_filter;
if (event_filter)
input_event_filter = event_filter;
if (shutdown_filter)
input_shutdown_filter = shutdown_filter;
}
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