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scummvm/backends/sdl/events.cpp

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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2004 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "backends/sdl/sdl-common.h"
#include "common/util.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
#define JOY_DEADZONE 3200
#define JOY_ANALOG
// #define JOY_INVERT_Y
#define JOY_XAXIS 0
#define JOY_YAXIS 1
// buttons
#define JOY_BUT_LMOUSE 0
#define JOY_BUT_RMOUSE 2
#define JOY_BUT_ESCAPE 3
#define JOY_BUT_PERIOD 1
#define JOY_BUT_SPACE 4
#define JOY_BUT_F5 5
static const int s_gfxModeSwitchTable[][4] = {
{ GFX_NORMAL, GFX_DOUBLESIZE, GFX_TRIPLESIZE, -1 },
{ GFX_NORMAL, GFX_ADVMAME2X, GFX_ADVMAME3X, -1 },
{ GFX_NORMAL, GFX_HQ2X, GFX_HQ3X, -1 },
{ GFX_NORMAL, GFX_2XSAI, -1, -1 },
{ GFX_NORMAL, GFX_SUPER2XSAI, -1, -1 },
{ GFX_NORMAL, GFX_SUPEREAGLE, -1, -1 },
{ GFX_NORMAL, GFX_TV2X, -1, -1 },
{ GFX_NORMAL, GFX_DOTMATRIX, -1, -1 }
};
static int mapKey(SDLKey key, SDLMod mod, Uint16 unicode)
{
if (key >= SDLK_F1 && key <= SDLK_F9) {
return key - SDLK_F1 + 315;
} else if (key >= SDLK_KP0 && key <= SDLK_KP9) {
return key - SDLK_KP0 + '0';
} else if (key >= SDLK_UP && key <= SDLK_PAGEDOWN) {
return key;
} else if (unicode) {
return unicode;
} else if (key >= 'a' && key <= 'z' && mod & KMOD_SHIFT) {
return key & ~0x20;
} else if (key >= SDLK_NUMLOCK && key <= SDLK_EURO) {
return 0;
}
return key;
}
void OSystem_SDL::fillMouseEvent(Event &event, int x, int y) {
event.mouse.x = x;
event.mouse.y = y;
// Update the "keyboard mouse" coords
km.x = x;
km.y = y;
// Adjust for the screen scaling
event.mouse.x /= _scaleFactor;
event.mouse.y /= _scaleFactor;
// Optionally perform aspect ratio adjusting
if (_adjustAspectRatio)
event.mouse.y = aspect2Real(event.mouse.y);
}
void OSystem_SDL::kbd_mouse() {
uint32 curTime = get_msecs();
if (curTime >= km.last_time + km.delay_time) {
km.last_time = curTime;
if (km.x_down_count == 1) {
km.x_down_time = curTime;
km.x_down_count = 2;
}
if (km.y_down_count == 1) {
km.y_down_time = curTime;
km.y_down_count = 2;
}
if (km.x_vel || km.y_vel) {
if (km.x_down_count) {
if (curTime > km.x_down_time + km.delay_time * 12) {
if (km.x_vel > 0)
km.x_vel++;
else
km.x_vel--;
} else if (curTime > km.x_down_time + km.delay_time * 8) {
if (km.x_vel > 0)
km.x_vel = 5;
else
km.x_vel = -5;
}
}
if (km.y_down_count) {
if (curTime > km.y_down_time + km.delay_time * 12) {
if (km.y_vel > 0)
km.y_vel++;
else
km.y_vel--;
} else if (curTime > km.y_down_time + km.delay_time * 8) {
if (km.y_vel > 0)
km.y_vel = 5;
else
km.y_vel = -5;
}
}
km.x += km.x_vel;
km.y += km.y_vel;
if (km.x < 0) {
km.x = 0;
km.x_vel = -1;
km.x_down_count = 1;
} else if (km.x > km.x_max) {
km.x = km.x_max;
km.x_vel = 1;
km.x_down_count = 1;
}
if (km.y < 0) {
km.y = 0;
km.y_vel = -1;
km.y_down_count = 1;
} else if (km.y > km.y_max) {
km.y = km.y_max;
km.y_vel = 1;
km.y_down_count = 1;
}
SDL_WarpMouse(km.x, km.y);
}
}
}
bool OSystem_SDL::poll_event(Event *event) {
SDL_Event ev;
int axis;
byte b = 0;
kbd_mouse();
// If the screen mode changed, send an EVENT_SCREEN_CHANGED
if (_modeChanged) {
_modeChanged = false;
event->event_code = EVENT_SCREEN_CHANGED;
return true;
}
while(SDL_PollEvent(&ev)) {
switch(ev.type) {
case SDL_KEYDOWN:
#ifdef LINUPY
// Yopy has no ALT key, steal the SHIFT key
// (which isn't used much anyway)
if (ev.key.keysym.mod & KMOD_SHIFT)
b |= KBD_ALT;
if (ev.key.keysym.mod & KMOD_CTRL)
b |= KBD_CTRL;
#else
if (ev.key.keysym.mod & KMOD_SHIFT)
b |= KBD_SHIFT;
if (ev.key.keysym.mod & KMOD_CTRL)
b |= KBD_CTRL;
if (ev.key.keysym.mod & KMOD_ALT)
b |= KBD_ALT;
#endif
event->kbd.flags = b;
// Alt-Return toggles full screen mode
if (b == KBD_ALT && ev.key.keysym.sym == SDLK_RETURN) {
setFullscreenMode(!_full_screen);
break;
}
// Alt-S: Create a screenshot
if (b == KBD_ALT && ev.key.keysym.sym == 's') {
char filename[20];
for (int n = 0;; n++) {
SDL_RWops *file;
sprintf(filename, "scummvm%05d.bmp", n);
file = SDL_RWFromFile(filename, "r");
if (!file)
break;
SDL_RWclose(file);
}
if (save_screenshot(filename))
printf("Saved '%s'\n", filename);
else
printf("Could not save screenshot!\n");
break;
}
// Ctrl-m toggles mouse capture
if (b == KBD_CTRL && ev.key.keysym.sym == 'm') {
toggleMouseGrab();
break;
}
#ifdef MACOSX
// On Macintosh', Cmd-Q quits
if ((ev.key.keysym.mod & KMOD_META) && ev.key.keysym.sym == 'q') {
event->event_code = EVENT_QUIT;
return true;
}
#else
// Ctrl-z and Alt-X quit
if ((b == KBD_CTRL && ev.key.keysym.sym == 'z') || (b == KBD_ALT && ev.key.keysym.sym == 'x')) {
event->event_code = EVENT_QUIT;
return true;
}
#endif
// Ctrl-Alt-<key> will change the GFX mode
if ((b & (KBD_CTRL|KBD_ALT)) == (KBD_CTRL|KBD_ALT)) {
// FIXME EVIL HACK: This shouldn't be a static int, rather it
// should be a member variable. Furthermore, it shouldn't be
// set in this code, rather it should be set by load_gfx_mode().
// But for now this quick&dirty hack works.
static int _scalerType = 0;
if (_mode != GFX_NORMAL) {
// Try to figure out which gfx mode "group" we are in
// This is just a temporary hack until the proper solution
// (i.e. code in load_gfx_mode()) is in effect.
for (int i = 0; i < ARRAYSIZE(s_gfxModeSwitchTable); i++) {
if (s_gfxModeSwitchTable[i][1] == _mode || s_gfxModeSwitchTable[i][2] == _mode) {
_scalerType = i;
break;
}
}
}
int factor = _scaleFactor - 1;
// Ctrl-Alt-a toggles aspect ratio correction
if (ev.key.keysym.sym == 'a') {
setFeatureState(kFeatureAspectRatioCorrection, !_adjustAspectRatio);
break;
}
// Increase/decrease the scale factor
// TODO: Shall we 'wrap around' here?
if (ev.key.keysym.sym == SDLK_EQUALS || ev.key.keysym.sym == SDLK_PLUS || ev.key.keysym.sym == SDLK_MINUS ||
ev.key.keysym.sym == SDLK_KP_PLUS || ev.key.keysym.sym == SDLK_KP_MINUS) {
factor += (ev.key.keysym.sym == SDLK_MINUS || ev.key.keysym.sym == SDLK_KP_MINUS) ? -1 : +1;
if (0 <= factor && factor < 4 && s_gfxModeSwitchTable[_scalerType][factor] >= 0) {
setGraphicsMode(s_gfxModeSwitchTable[_scalerType][factor]);
}
break;
}
const bool isNormalNumber = (SDLK_1 <= ev.key.keysym.sym && ev.key.keysym.sym <= SDLK_9);
const bool isKeypadNumber = (SDLK_KP1 <= ev.key.keysym.sym && ev.key.keysym.sym <= SDLK_KP9);
if (isNormalNumber || isKeypadNumber) {
_scalerType = ev.key.keysym.sym - (isNormalNumber ? SDLK_1 : SDLK_KP1);
if (_scalerType >= ARRAYSIZE(s_gfxModeSwitchTable))
break;
while (s_gfxModeSwitchTable[_scalerType][factor] < 0) {
assert(factor > 0);
factor--;
}
setGraphicsMode(s_gfxModeSwitchTable[_scalerType][factor]);
break;
}
}
#ifdef LINUPY
// On Yopy map the End button to quit
if ((ev.key.keysym.sym==293)) {
event->event_code = EVENT_QUIT;
return true;
}
// Map menu key to f5 (scumm menu)
if (ev.key.keysym.sym==306) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_F5;
event->kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
return true;
}
// Map action key to action
if (ev.key.keysym.sym==291) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_TAB;
event->kbd.ascii = mapKey(SDLK_TAB, ev.key.keysym.mod, 0);
return true;
}
// Map OK key to skip cinematic
if (ev.key.keysym.sym==292) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_ESCAPE;
event->kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
return true;
}
#endif
#ifdef QTOPIA
// quit on fn+backspace on zaurus
if (ev.key.keysym.sym == 127) {
event->event_code = EVENT_QUIT;
return true;
}
// map menu key (f11) to f5 (scumm menu)
if (ev.key.keysym.sym == SDLK_F11) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_F5;
event->kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
}
// map center (space) to tab (default action )
// I wanted to map the calendar button but the calendar comes up
//
else if (ev.key.keysym.sym == SDLK_SPACE) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_TAB;
event->kbd.ascii = mapKey(SDLK_TAB, ev.key.keysym.mod, 0);
}
// since we stole space (pause) above we'll rebind it to the tab key on the keyboard
else if (ev.key.keysym.sym == SDLK_TAB) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_SPACE;
event->kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
} else {
// let the events fall through if we didn't change them, this may not be the best way to
// set it up, but i'm not sure how sdl would like it if we let if fall through then redid it though.
// and yes i have an huge terminal size so i dont wrap soon enough.
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = ev.key.keysym.sym;
event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode);
}
#else
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = ev.key.keysym.sym;
event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode);
#endif
switch(ev.key.keysym.sym) {
case SDLK_LEFT:
km.x_vel = -1;
km.x_down_count = 1;
break;
case SDLK_RIGHT:
km.x_vel = 1;
km.x_down_count = 1;
break;
case SDLK_UP:
km.y_vel = -1;
km.y_down_count = 1;
break;
case SDLK_DOWN:
km.y_vel = 1;
km.y_down_count = 1;
break;
default:
break;
}
return true;
case SDL_KEYUP:
event->event_code = EVENT_KEYUP;
event->kbd.keycode = ev.key.keysym.sym;
event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode);
switch(ev.key.keysym.sym) {
case SDLK_LEFT:
if (km.x_vel < 0) {
km.x_vel = 0;
km.x_down_count = 0;
}
break;
case SDLK_RIGHT:
if (km.x_vel > 0) {
km.x_vel = 0;
km.x_down_count = 0;
}
break;
case SDLK_UP:
if (km.y_vel < 0) {
km.y_vel = 0;
km.y_down_count = 0;
}
break;
case SDLK_DOWN:
if (km.y_vel > 0) {
km.y_vel = 0;
km.y_down_count = 0;
}
break;
default:
break;
}
return true;
case SDL_MOUSEMOTION:
event->event_code = EVENT_MOUSEMOVE;
fillMouseEvent(*event, ev.motion.x, ev.motion.y);
set_mouse_pos(event->mouse.x, event->mouse.y);
return true;
case SDL_MOUSEBUTTONDOWN:
if (ev.button.button == SDL_BUTTON_LEFT)
event->event_code = EVENT_LBUTTONDOWN;
else if (ev.button.button == SDL_BUTTON_RIGHT)
event->event_code = EVENT_RBUTTONDOWN;
#if defined(SDL_BUTTON_WHEELUP) && defined(SDL_BUTTON_WHEELDOWN)
else if (ev.button.button == SDL_BUTTON_WHEELUP)
event->event_code = EVENT_WHEELUP;
else if (ev.button.button == SDL_BUTTON_WHEELDOWN)
event->event_code = EVENT_WHEELDOWN;
#endif
else
break;
fillMouseEvent(*event, ev.button.x, ev.button.y);
return true;
case SDL_MOUSEBUTTONUP:
if (ev.button.button == SDL_BUTTON_LEFT)
event->event_code = EVENT_LBUTTONUP;
else if (ev.button.button == SDL_BUTTON_RIGHT)
event->event_code = EVENT_RBUTTONUP;
else
break;
fillMouseEvent(*event, ev.button.x, ev.button.y);
return true;
case SDL_JOYBUTTONDOWN:
if (ev.jbutton.button == JOY_BUT_LMOUSE) {
event->event_code = EVENT_LBUTTONDOWN;
} else if (ev.jbutton.button == JOY_BUT_RMOUSE) {
event->event_code = EVENT_RBUTTONDOWN;
} else {
event->event_code = EVENT_KEYDOWN;
switch (ev.jbutton.button) {
case JOY_BUT_ESCAPE:
event->kbd.keycode = SDLK_ESCAPE;
event->kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
break;
case JOY_BUT_PERIOD:
event->kbd.keycode = SDLK_PERIOD;
event->kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0);
break;
case JOY_BUT_SPACE:
event->kbd.keycode = SDLK_SPACE;
event->kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
break;
case JOY_BUT_F5:
event->kbd.keycode = SDLK_F5;
event->kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
break;
}
}
return true;
case SDL_JOYBUTTONUP:
if (ev.jbutton.button == JOY_BUT_LMOUSE) {
event->event_code = EVENT_LBUTTONUP;
} else if (ev.jbutton.button == JOY_BUT_RMOUSE) {
event->event_code = EVENT_RBUTTONUP;
} else {
event->event_code = EVENT_KEYUP;
switch (ev.jbutton.button) {
case JOY_BUT_ESCAPE:
event->kbd.keycode = SDLK_ESCAPE;
event->kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
break;
case JOY_BUT_PERIOD:
event->kbd.keycode = SDLK_PERIOD;
event->kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0);
break;
case JOY_BUT_SPACE:
event->kbd.keycode = SDLK_SPACE;
event->kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
break;
case JOY_BUT_F5:
event->kbd.keycode = SDLK_F5;
event->kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
break;
}
}
return true;
case SDL_JOYAXISMOTION:
axis = ev.jaxis.value;
if ( axis > JOY_DEADZONE) {
axis -= JOY_DEADZONE;
event->event_code = EVENT_MOUSEMOVE;
} else if ( axis < -JOY_DEADZONE ) {
axis += JOY_DEADZONE;
event->event_code = 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;
case SDL_VIDEOEXPOSE:
_forceFull = true;
break;
case SDL_QUIT:
event->event_code = EVENT_QUIT;
return true;
}
}
return false;
}
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