SDL_gemevents.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2012 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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/*
* GEM SDL video driver implementation
* inspired from the Dummy SDL driver
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* Patrice Mandin
* and work from
* Olivier Landemarre, Johan Klockars, Xavier Joubert, Claude Attard
*/
#include <gem.h>
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#include "SDL_timer.h"
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#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_gemvideo.h"
#include "SDL_gemevents_c.h"
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#include "SDL_gemmouse_c.h"
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#include "../ataricommon/SDL_atarikeys.h" /* for keyboard scancodes */
#include "../ataricommon/SDL_atarievents_c.h"
#include "../ataricommon/SDL_xbiosevents_c.h"
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#include "../ataricommon/SDL_ataridevmouse_c.h"
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/* Duration after which we consider key released */
#define KEY_PRESS_DURATION 100
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#define MSG_SDL_ID (('S'<<8)|'D')
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/* Variables */
static unsigned char gem_currentkeyboard[ATARIBIOS_MAXKEYS];
static unsigned char gem_previouskeyboard[ATARIBIOS_MAXKEYS];
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static Uint32 keyboard_ticks[ATARIBIOS_MAXKEYS];
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static short prevmx=0,prevmy=0,prevmb=0;
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static short dummy_msgbuf[8] = {MSG_SDL_ID,0,0,0, 0,0,0,0};
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/* Functions prototypes */
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static int do_messages(_THIS, short *message, short latest_msg_id);
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static void do_keyboard(short kc, Uint32 tick);
static void do_keyboard_special(short ks, Uint32 tick);
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static void do_mouse_motion(_THIS, short mx, short my);
static void do_mouse_buttons(_THIS, short mb);
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static int mouse_in_work_area(int winhandle, short mx, short my);
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static void clearKeyboardState(Uint32 tick);
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/* Functions */
void GEM_InitOSKeymap(_THIS)
{
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SDL_memset(gem_currentkeyboard, 0, sizeof(gem_currentkeyboard));
SDL_memset(gem_previouskeyboard, 0, sizeof(gem_previouskeyboard));
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SDL_memset(keyboard_ticks, 0, sizeof(keyboard_ticks));
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/* Mouse init */
GEM_mouse_relative = SDL_FALSE;
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SDL_Atari_InitInternalKeymap(this);
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}
void GEM_PumpEvents(_THIS)
{
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short prevkc=0, mousex, mousey, mouseb, kstate;
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int i, quit = 0;
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SDL_keysym keysym;
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Uint32 cur_tick;
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static Uint32 prev_now = 0, prev_msg = 0;
static short latest_msg_id = 0;
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cur_tick = SDL_GetTicks();
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if (prev_now == cur_tick) {
return;
}
prev_now = cur_tick;
SDL_AtariMint_BackgroundTasks();
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clearKeyboardState(cur_tick);
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if (prev_msg) {
/* Wait at least 20ms before each event processing loop */
if (cur_tick-prev_msg < 20) {
return;
}
}
prev_msg = cur_tick;
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dummy_msgbuf[1] = ++latest_msg_id;
if (appl_write(GEM_ap_id, sizeof(dummy_msgbuf), dummy_msgbuf) == 0) {
/* If it fails, wait for previous id */
--latest_msg_id;
}
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while (!quit) {
int resultat;
short buffer[8], kc, dummy;
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resultat = evnt_multi(
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MU_MESAG|MU_TIMER|MU_KEYBD,
0,0,0,
0,0,0,0,0,
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0,0,0,0,0,
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&dummy,&dummy,&dummy,&kstate,&kc,&dummy
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);
/* Message event ? */
if (resultat & MU_MESAG)
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quit = do_messages(this, buffer, latest_msg_id);
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/* Keyboard event ? */
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if (resultat & MU_KEYBD) {
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do_keyboard_special(kstate, cur_tick);
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if (prevkc != kc) {
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do_keyboard(kc, cur_tick);
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prevkc = kc;
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}
}
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/* Timer event ? Just used as a safeguard */
if (resultat & MU_TIMER) {
quit = 1;
}
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GEM_CheckMouseMode(this);
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/* Update mouse state */
graf_mkstate(&mousex, &mousey, &mouseb, &kstate);
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do_keyboard_special(kstate, cur_tick);
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do_mouse_motion(this, mousex, mousey);
do_mouse_buttons(this, mouseb);
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/* Now generate keyboard events */
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for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
/* Key pressed ? */
if (gem_currentkeyboard[i] && !gem_previouskeyboard[i])
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SDL_PrivateKeyboard(SDL_PRESSED,
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SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
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/* Key unpressed ? */
if (gem_previouskeyboard[i] && !gem_currentkeyboard[i])
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SDL_PrivateKeyboard(SDL_RELEASED,
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SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
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SDL_memcpy(gem_previouskeyboard,gem_currentkeyboard,sizeof(gem_previouskeyboard));
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/* Refresh window name ? */
if (GEM_refresh_name) {
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const char *window_name =
(SDL_GetAppState() & SDL_APPACTIVE)
? GEM_title_name : GEM_icon_name;
if (window_name) {
wind_set(GEM_handle,WF_NAME,
(short)(((unsigned long)window_name)>>16),
(short)(((unsigned long)window_name) & 0xffff),
0,0);
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}
GEM_refresh_name = SDL_FALSE;
}
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static int do_messages(_THIS, short *message, short latest_msg_id)
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switch (message[0]) {
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case MSG_SDL_ID:
quit=(message[1] == latest_msg_id);
break;
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case WM_CLOSED:
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SDL_PrivateQuit();
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quit=1;
break;
case WM_MOVED:
wind_set(message[3],WF_CURRXYWH,message[4],message[5],message[6],message[7]);
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wind_get (message[3], WF_WORKXYWH, &GEM_work_x, &GEM_work_y, &GEM_work_w, &GEM_work_h);
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break;
case WM_TOPPED:
wind_set(message[3],WF_TOP,message[4],0,0,0);
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/* Continue with TOP event processing */
case WM_ONTOP:
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SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
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if (VDI_setpalette) {
VDI_setpalette(this, VDI_curpalette);
}
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break;
case WM_REDRAW:
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if (!GEM_lock_redraw) {
GEM_wind_redraw(this, message[3],&message[4]);
}
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break;
case WM_ICONIFY:
case WM_ALLICONIFY:
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wind_set (message[3],WF_ICONIFY,message[4],message[5],message[6],message[7]);
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/* If we're active, make ourselves inactive */
if ( SDL_GetAppState() & SDL_APPACTIVE ) {
/* Send an internal deactivate event */
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SDL_PrivateAppActive(0, SDL_APPACTIVE);
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/* Update window title */
if (GEM_refresh_name && GEM_icon_name) {
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wind_set(GEM_handle,WF_NAME,
(short)(((unsigned long)GEM_icon_name)>>16),
(short)(((unsigned long)GEM_icon_name) & 0xffff),
0,0);
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GEM_refresh_name = SDL_FALSE;
}
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wind_get (message[3], WF_WORKXYWH, &GEM_work_x, &GEM_work_y, &GEM_work_w, &GEM_work_h);
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break;
case WM_UNICONIFY:
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wind_set (message[3],WF_UNICONIFY,message[4],message[5],message[6],message[7]);
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/* If we're not active, make ourselves active */
if ( !(SDL_GetAppState() & SDL_APPACTIVE) ) {
/* Send an internal activate event */
SDL_PrivateAppActive(1, SDL_APPACTIVE);
}
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if (GEM_refresh_name && GEM_title_name) {
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wind_set(GEM_handle,WF_NAME,
(short)(((unsigned long)GEM_title_name)>>16),
(short)(((unsigned long)GEM_title_name) & 0xffff),
0,0);
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GEM_refresh_name = SDL_FALSE;
}
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wind_get (message[3], WF_WORKXYWH, &GEM_work_x, &GEM_work_y, &GEM_work_w, &GEM_work_h);
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break;
case WM_SIZED:
wind_set (message[3], WF_CURRXYWH, message[4], message[5], message[6], message[7]);
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wind_get (message[3], WF_WORKXYWH, &GEM_work_x, &GEM_work_y, &GEM_work_w, &GEM_work_h);
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GEM_win_fulled = SDL_FALSE; /* Cancel maximized flag */
GEM_lock_redraw = SDL_TRUE; /* Prevent redraw till buffers resized */
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SDL_PrivateResize(GEM_work_w, GEM_work_h);
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break;
case WM_FULLED:
{
short x,y,w,h;
if (GEM_win_fulled) {
wind_get (message[3], WF_PREVXYWH, &x, &y, &w, &h);
GEM_win_fulled = SDL_FALSE;
} else {
x = GEM_desk_x;
y = GEM_desk_y;
w = GEM_desk_w;
h = GEM_desk_h;
GEM_win_fulled = SDL_TRUE;
}
wind_set (message[3], WF_CURRXYWH, x, y, w, h);
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wind_get (message[3], WF_WORKXYWH, &GEM_work_x, &GEM_work_y, &GEM_work_w, &GEM_work_h);
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GEM_lock_redraw = SDL_TRUE; /* Prevent redraw till buffers resized */
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SDL_PrivateResize(GEM_work_w, GEM_work_h);
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}
break;
case WM_BOTTOMED:
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wind_set(message[3],WF_BOTTOM,0,0,0,0);
/* Continue with BOTTOM event processing */
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case WM_UNTOPPED:
SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS);
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if (VDI_setpalette) {
VDI_setpalette(this, VDI_oldpalette);
}
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break;
}
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return quit;
}
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static void do_keyboard(short kc, Uint32 tick)
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int scancode;
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if (kc) {
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scancode=(kc>>8) & (ATARIBIOS_MAXKEYS-1);
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gem_currentkeyboard[scancode]=0xFF;
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keyboard_ticks[scancode]=tick;
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static void do_keyboard_special(short ks, Uint32 tick)
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int scancode=0;
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/* Read special keys */
if (ks & K_RSHIFT)
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scancode=SCANCODE_RIGHTSHIFT;
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if (ks & K_LSHIFT)
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scancode=SCANCODE_LEFTSHIFT;
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if (ks & K_CTRL)
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scancode=SCANCODE_LEFTCONTROL;
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if (ks & K_ALT)
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scancode=SCANCODE_LEFTALT;
if (scancode) {
gem_currentkeyboard[scancode]=0xFF;
keyboard_ticks[scancode]=tick;
}
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static void do_mouse_motion(_THIS, short mx, short my)
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short x2, y2, w2, h2;
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if (this->input_grab == SDL_GRAB_OFF) {
/* Switch mouse focus state */
if (!GEM_fullscreen && (GEM_handle>=0)) {
SDL_PrivateAppActive(
mouse_in_work_area(GEM_handle, mx,my),
SDL_APPMOUSEFOCUS);
}
}
GEM_CheckMouseMode(this);
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/* Don't return mouse events if out of window */
if ((SDL_GetAppState() & SDL_APPMOUSEFOCUS)==0) {
return;
}
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/* Relative mouse motion ? */
if (GEM_mouse_relative) {
if (GEM_usedevmouse) {
SDL_AtariDevMouse_PostMouseEvents(this, SDL_FALSE);
} else {
SDL_AtariXbios_PostMouseEvents(this, SDL_FALSE);
}
return;
}
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/* Retrieve window coords, and generate mouse events accordingly */
x2 = y2 = 0;
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w2 = VDI_w;
h2 = VDI_h;
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if ((!GEM_fullscreen) && (GEM_handle>=0)) {
wind_get (GEM_handle, WF_WORKXYWH, &x2, &y2, &w2, &h2);
}
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if ((prevmx!=mx) || (prevmy!=my)) {
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int posx, posy;
/* Give mouse position relative to window position */
posx = mx - x2;
if (posx<0) posx = 0;
if (posx>w2) posx = w2-1;
posy = my - y2;
if (posy<0) posy = 0;
if (posy>h2) posy = h2-1;
SDL_PrivateMouseMotion(0, 0, posx, posy);
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prevmx = mx;
prevmy = my;
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static void do_mouse_buttons(_THIS, short mb)
{
int i;
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/* Don't return mouse events if out of window */
if ((SDL_GetAppState() & SDL_APPMOUSEFOCUS)==0)
return;
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if (prevmb==mb)
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return;
for (i=0;i<3;i++) {
int curbutton, prevbutton;
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curbutton = mb & (1<<i);
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prevbutton = prevmb & (1<<i);
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if (curbutton && !prevbutton) {
SDL_PrivateMouseButton(SDL_PRESSED, i+1, 0, 0);
}
if (!curbutton && prevbutton) {
SDL_PrivateMouseButton(SDL_RELEASED, i+1, 0, 0);
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prevmb = mb;
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/* Check if mouse in visible area of the window */
static int mouse_in_work_area(int winhandle, short mx, short my)
{
short todo[4];
short inside[4] = {mx,my,1,1};
/* Browse the rectangle list */
if (wind_get(winhandle, WF_FIRSTXYWH, &todo[0], &todo[1], &todo[2], &todo[3])!=0) {
while (todo[2] && todo[3]) {
if (rc_intersect((GRECT *)inside,(GRECT *)todo)) {
return 1;
}
if (wind_get(winhandle, WF_NEXTXYWH, &todo[0], &todo[1], &todo[2], &todo[3])==0) {
break;
}
}
}
return 0;
}
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/* Clear key state for which we did not receive events for a while */
static void clearKeyboardState(Uint32 tick)
{
int i;
for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
if (keyboard_ticks[i]) {
if (tick-keyboard_ticks[i] > KEY_PRESS_DURATION) {
gem_currentkeyboard[i]=0;
keyboard_ticks[i]=0;
}
}
}
}