SDL - Simple DirectMedia Layer

Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

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

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@libsdl.org

#include "SDL_QuartzKeys.h"

static SDLKey keymap[256];

static unsigned int currentMods = 0; /* Current keyboard modifiers, to track modifier state */

static int last_virtual_button = 0; /* Last virtual mouse button pressed */

static void QZ_InitOSKeymap (_THIS) {

const void *KCHRPtr;

UInt32 state;

UInt32 value;

int i;

int world = SDLK_WORLD_0;

for ( i=0; i<SDL_TABLESIZE(keymap); ++i )

keymap[i] = SDLK_UNKNOWN;

/* This keymap is almost exactly the same as the OS 9 one */

keymap[QZ_ESCAPE] = SDLK_ESCAPE;

keymap[QZ_F1] = SDLK_F1;

keymap[QZ_F2] = SDLK_F2;

keymap[QZ_F3] = SDLK_F3;

keymap[QZ_F4] = SDLK_F4;

keymap[QZ_F5] = SDLK_F5;

keymap[QZ_F6] = SDLK_F6;

keymap[QZ_F7] = SDLK_F7;

keymap[QZ_F8] = SDLK_F8;

keymap[QZ_F9] = SDLK_F9;

keymap[QZ_F10] = SDLK_F10;

keymap[QZ_F11] = SDLK_F11;

keymap[QZ_F12] = SDLK_F12;

keymap[QZ_PRINT] = SDLK_PRINT;

keymap[QZ_SCROLLOCK] = SDLK_SCROLLOCK;

keymap[QZ_PAUSE] = SDLK_PAUSE;

keymap[QZ_POWER] = SDLK_POWER;

keymap[QZ_BACKQUOTE] = SDLK_BACKQUOTE;

keymap[QZ_1] = SDLK_1;

keymap[QZ_2] = SDLK_2;

keymap[QZ_3] = SDLK_3;

keymap[QZ_4] = SDLK_4;

keymap[QZ_5] = SDLK_5;

keymap[QZ_6] = SDLK_6;

keymap[QZ_7] = SDLK_7;

keymap[QZ_8] = SDLK_8;

keymap[QZ_9] = SDLK_9;

keymap[QZ_0] = SDLK_0;

keymap[QZ_MINUS] = SDLK_MINUS;

keymap[QZ_EQUALS] = SDLK_EQUALS;

keymap[QZ_BACKSPACE] = SDLK_BACKSPACE;

keymap[QZ_INSERT] = SDLK_INSERT;

keymap[QZ_HOME] = SDLK_HOME;

keymap[QZ_PAGEUP] = SDLK_PAGEUP;

keymap[QZ_NUMLOCK] = SDLK_NUMLOCK;

keymap[QZ_KP_EQUALS] = SDLK_KP_EQUALS;

keymap[QZ_KP_DIVIDE] = SDLK_KP_DIVIDE;

keymap[QZ_KP_MULTIPLY] = SDLK_KP_MULTIPLY;

keymap[QZ_TAB] = SDLK_TAB;

keymap[QZ_q] = SDLK_q;

keymap[QZ_w] = SDLK_w;

keymap[QZ_e] = SDLK_e;

keymap[QZ_r] = SDLK_r;

keymap[QZ_t] = SDLK_t;

keymap[QZ_y] = SDLK_y;

keymap[QZ_u] = SDLK_u;

keymap[QZ_i] = SDLK_i;

keymap[QZ_o] = SDLK_o;

keymap[QZ_p] = SDLK_p;

keymap[QZ_LEFTBRACKET] = SDLK_LEFTBRACKET;

keymap[QZ_RIGHTBRACKET] = SDLK_RIGHTBRACKET;

keymap[QZ_BACKSLASH] = SDLK_BACKSLASH;

keymap[QZ_DELETE] = SDLK_DELETE;

keymap[QZ_END] = SDLK_END;

keymap[QZ_PAGEDOWN] = SDLK_PAGEDOWN;

keymap[QZ_KP7] = SDLK_KP7;

keymap[QZ_KP8] = SDLK_KP8;

keymap[QZ_KP9] = SDLK_KP9;

keymap[QZ_KP_MINUS] = SDLK_KP_MINUS;

keymap[QZ_CAPSLOCK] = SDLK_CAPSLOCK;

keymap[QZ_a] = SDLK_a;

keymap[QZ_s] = SDLK_s;

keymap[QZ_d] = SDLK_d;

keymap[QZ_f] = SDLK_f;

keymap[QZ_g] = SDLK_g;

keymap[QZ_h] = SDLK_h;

keymap[QZ_j] = SDLK_j;

keymap[QZ_k] = SDLK_k;

keymap[QZ_l] = SDLK_l;

keymap[QZ_SEMICOLON] = SDLK_SEMICOLON;

keymap[QZ_QUOTE] = SDLK_QUOTE;

keymap[QZ_RETURN] = SDLK_RETURN;

keymap[QZ_KP4] = SDLK_KP4;

keymap[QZ_KP5] = SDLK_KP5;

keymap[QZ_KP6] = SDLK_KP6;

keymap[QZ_KP_PLUS] = SDLK_KP_PLUS;

keymap[QZ_LSHIFT] = SDLK_LSHIFT;

keymap[QZ_z] = SDLK_z;

keymap[QZ_x] = SDLK_x;

keymap[QZ_c] = SDLK_c;

keymap[QZ_v] = SDLK_v;

keymap[QZ_b] = SDLK_b;

keymap[QZ_n] = SDLK_n;

keymap[QZ_m] = SDLK_m;

keymap[QZ_COMMA] = SDLK_COMMA;

keymap[QZ_PERIOD] = SDLK_PERIOD;

keymap[QZ_SLASH] = SDLK_SLASH;

keymap[QZ_UP] = SDLK_UP;

keymap[QZ_KP1] = SDLK_KP1;

keymap[QZ_KP2] = SDLK_KP2;

keymap[QZ_KP3] = SDLK_KP3;

keymap[QZ_KP_ENTER] = SDLK_KP_ENTER;

keymap[QZ_LCTRL] = SDLK_LCTRL;

keymap[QZ_LALT] = SDLK_LALT;

keymap[QZ_LMETA] = SDLK_LMETA;

keymap[QZ_SPACE] = SDLK_SPACE;

keymap[QZ_LEFT] = SDLK_LEFT;

keymap[QZ_DOWN] = SDLK_DOWN;

keymap[QZ_RIGHT] = SDLK_RIGHT;

keymap[QZ_KP0] = SDLK_KP0;

keymap[QZ_KP_PERIOD] = SDLK_KP_PERIOD;

keymap[QZ_IBOOK_ENTER] = SDLK_KP_ENTER;

keymap[QZ_IBOOK_RIGHT] = SDLK_RIGHT;

keymap[QZ_IBOOK_DOWN] = SDLK_DOWN;

keymap[QZ_IBOOK_UP] = SDLK_UP;

keymap[QZ_IBOOK_LEFT] = SDLK_LEFT;

/* Up there we setup a static scancode->keysym map. However, it will not

* work very well on international keyboard. Hence we now query MacOS

* for its own keymap to adjust our own mapping table. However, this is

* bascially only useful for ascii char keys. This is also the reason

* why we keep the static table, too.

*/

/* Get a pointer to the systems cached KCHR */

KCHRPtr = (void *)GetScriptManagerVariable(smKCHRCache);

if (KCHRPtr)

{

/* Loop over all 127 possible scan codes */

for (i = 0; i < 0x7F; i++)

{

/* We pretend a clean start to begin with (i.e. no dead keys active */

state = 0;

/* Now translate the key code to a key value */

value = KeyTranslate(KCHRPtr, i, &state) & 0xff;

/* If the state become 0, it was a dead key. We need to translate again,

passing in the new state, to get the actual key value */

if (state != 0)

value = KeyTranslate(KCHRPtr, i, &state) & 0xff;

/* Now we should have an ascii value, or 0. Try to figure out to which SDL symbol it maps */

if (value >= 128) /* Some non-ASCII char, map it to SDLK_WORLD_* */

keymap[i] = world++;

else if (value >= 32) /* non-control ASCII char */

keymap[i] = value;

}

}

/* The keypad codes are re-setup here, because the loop above cannot

* distinguish between a key on the keypad and a regular key. We maybe

* could get around this problem in another fashion: NSEvent's flags

* include a "NSNumericPadKeyMask" bit; we could check that and modify

* the symbol we return on the fly. However, this flag seems to exhibit

* some weird behaviour related to the num lock key

*/

keymap[QZ_KP0] = SDLK_KP0;

keymap[QZ_KP1] = SDLK_KP1;

keymap[QZ_KP2] = SDLK_KP2;

keymap[QZ_KP3] = SDLK_KP3;

keymap[QZ_KP4] = SDLK_KP4;

keymap[QZ_KP5] = SDLK_KP5;

keymap[QZ_KP6] = SDLK_KP6;

keymap[QZ_KP7] = SDLK_KP7;

keymap[QZ_KP8] = SDLK_KP8;

keymap[QZ_KP9] = SDLK_KP9;

keymap[QZ_KP_MINUS] = SDLK_KP_MINUS;

keymap[QZ_KP_PLUS] = SDLK_KP_PLUS;

keymap[QZ_KP_PERIOD] = SDLK_KP_PERIOD;

keymap[QZ_KP_EQUALS] = SDLK_KP_EQUALS;

keymap[QZ_KP_DIVIDE] = SDLK_KP_DIVIDE;

keymap[QZ_KP_MULTIPLY] = SDLK_KP_MULTIPLY;

keymap[QZ_KP_ENTER] = SDLK_KP_ENTER;

}

static void QZ_DoKey (int state, NSEvent *event) {

NSString *chars;

int i;

SDL_keysym key;

/* An event can contain multiple characters */

/* I'll ignore this fact for now, since there is only one virtual key code per event */

chars = [ event characters ];

for (i =0; i < 1 /*[ chars length ] */; i++) {

key.scancode = [ event keyCode ];

key.sym = keymap [ key.scancode ];

key.unicode = [ chars characterAtIndex:i];

key.mod = KMOD_NONE;

SDL_PrivateKeyboard (state, &key);

}

}

static void QZ_DoModifiers (unsigned int newMods) {

const int mapping[] = { SDLK_CAPSLOCK, SDLK_LSHIFT, SDLK_LCTRL, SDLK_LALT, SDLK_LMETA } ;

int i;

int bit;

SDL_keysym key;

key.scancode = 0;

key.sym = SDLK_UNKNOWN;

key.unicode = 0;

key.mod = KMOD_NONE;

/* Iterate through the bits, testing each against the current modifiers */

for (i = 0, bit = NSAlphaShiftKeyMask; bit <= NSCommandKeyMask; bit <<= 1, ++i) {

unsigned int currentMask, newMask;

currentMask = currentMods & bit;

newMask = newMods & bit;

if ( currentMask &&

currentMask != newMask ) { /* modifier up event */

key.sym = mapping[i];

/* If this was Caps Lock, we need some additional voodoo to make SDL happy */

if (bit == NSAlphaShiftKeyMask)

SDL_PrivateKeyboard (SDL_PRESSED, &key);

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

else if ( newMask &&

currentMask != newMask ) { /* modifier down event */

key.sym = mapping[i];

SDL_PrivateKeyboard (SDL_PRESSED, &key);

/* If this was Caps Lock, we need some additional voodoo to make SDL happy */

if (bit == NSAlphaShiftKeyMask)

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

}

currentMods = newMods;

}

static void QZ_DoActivate (_THIS)

{

inForeground = YES;

/* Regrab the mouse */

if (currentGrabMode == SDL_GRAB_ON) {

QZ_WarpWMCursor (this, SDL_VideoSurface->w / 2, SDL_VideoSurface->h / 2);

CGAssociateMouseAndMouseCursorPosition (0);

}

/* Hide the mouse cursor if inside the app window */

if (!QZ_cursor_visible) {

HideCursor ();

}

SDL_PrivateAppActive (1, SDL_APPINPUTFOCUS);

}

static void QZ_DoDeactivate (_THIS) {

inForeground = NO;

/* Ungrab mouse if it is grabbed */

if (currentGrabMode == SDL_GRAB_ON) {

CGAssociateMouseAndMouseCursorPosition (1);

}

/* Show the mouse cursor */

if (!QZ_cursor_visible) {

ShowCursor ();

}

SDL_PrivateAppActive (0, SDL_APPINPUTFOCUS);

}

CGMouseDelta dx, dy;

NSDate *distantPast;

NSEvent *event;

NSRect winRect;

NSRect titleBarRect;

NSAutoreleasePool *pool;

pool = [ [ NSAutoreleasePool alloc ] init ];

distantPast = [ NSDate distantPast ];

winRect = NSMakeRect (0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h);

titleBarRect = NSMakeRect (0, SDL_VideoSurface->h, SDL_VideoSurface->w,

SDL_VideoSurface->h + 22);

/* send the first mouse event in absolute coordinates */

firstMouseEvent = 1;

/* accumulate any additional mouse moved events into one SDL mouse event */

dx = 0;

dy = 0;

do {

/* Poll for an event. This will not block */

event = [ NSApp nextEventMatchingMask:NSAnyEventMask

untilDate:distantPast

inMode: NSDefaultRunLoopMode dequeue:YES ];

if (event != nil) {

unsigned int type;

BOOL isForGameWin;

#define DO_MOUSE_DOWN(button, sendToWindow) do { \

if ( inForeground ) { \

if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) || \

NSPointInRect([event locationInWindow], winRect) ) \

SDL_PrivateMouseButton (SDL_PRESSED, button, 0, 0); \

} \

else { \

QZ_DoActivate (this); \

} \

[ NSApp sendEvent:event ]; \

} while(0)

#define DO_MOUSE_UP(button, sendToWindow) do { \

if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) || \

!NSPointInRect([event locationInWindow], titleBarRect) ) \

SDL_PrivateMouseButton (SDL_RELEASED, button, 0, 0); \

[ NSApp sendEvent:event ]; \

} while(0)

type = [ event type ];

isForGameWin = (qz_window == [ event window ]);

switch (type) {

case NSLeftMouseDown:

if ( NSCommandKeyMask & currentMods ) {

last_virtual_button = 3;

DO_MOUSE_DOWN (3, 0);

}

else if ( NSAlternateKeyMask & currentMods ) {

last_virtual_button = 2;

DO_MOUSE_DOWN (2, 0);

}

else {

DO_MOUSE_DOWN (1, 1);

}

break;

case NSOtherMouseDown: DO_MOUSE_DOWN (2, 0); break;

case NSRightMouseDown: DO_MOUSE_DOWN (3, 0); break;

case NSLeftMouseUp:

if ( last_virtual_button != 0 ) {

DO_MOUSE_UP (last_virtual_button, 0);

last_virtual_button = 0;

}

else {

DO_MOUSE_UP (1, 1);

}

break;

case NSOtherMouseUp: DO_MOUSE_UP (2, 0); break;

case NSRightMouseUp: DO_MOUSE_UP (3, 0); break;

case NSSystemDefined:

//if ([event subtype] == 7) {

// unsigned int buttons; // up to 32 mouse button states!

// buttons = [ event data2 ];

//}

break;

case NSLeftMouseDragged:

case NSRightMouseDragged:

case NSMouseMoved:

if (currentGrabMode == SDL_GRAB_ON) {

/**

* If input is grabbed, the cursor doesn't move,

* so we have to call the lowlevel window server

* function. This is less accurate but works OK.

**/

CGMouseDelta dx1, dy1;

CGGetLastMouseDelta (&dx1, &dy1);

dx += dx1;

dy += dy1;

}

else if (warp_flag) {

/**

* If we just warped the mouse, the cursor is frozen for a while.

* So we have to use the lowlevel function until it

* unfreezes. This really helps apps that continuously

* warp the mouse to keep it in the game window.

**/

Uint32 ticks;

ticks = SDL_GetTicks();

if (ticks - warp_ticks < 150) {

CGMouseDelta dx1, dy1;

CGGetLastMouseDelta (&dx1, &dy1);

dx += dx1;

dy += dy1;

}

else {

warp_flag = 0;

}

else if (firstMouseEvent) {

/**

* Get the first mouse event in a possible

* sequence of mouse moved events. Since we

* use absolute coordinates, this serves to

* compensate any inaccuracy in deltas, and

* provides the first known mouse position,

* since everything after this uses deltas

**/

NSPoint p = [ event locationInWindow ];

QZ_PrivateCocoaToSDL(this, &p);

SDL_PrivateMouseMotion (0, 0, p.x, p.y);

firstMouseEvent = 0;

}

else {

/**

* Get the amount moved since the last drag or move event,

* add it on for one big move event at the end.

**/

dx += [ event deltaX ];

dy += [ event deltaY ];

}

break;

case NSScrollWheel:

if (NSPointInRect([ event locationInWindow ], winRect)) {

float dy;

dy = [ event deltaY ];

if ( dy > 0.0 ) /* Scroll up */

SDL_PrivateMouseButton (SDL_PRESSED, 4, 0, 0);

else /* Scroll down */

SDL_PrivateMouseButton (SDL_PRESSED, 5, 0, 0);

}

break;

case NSKeyUp:

QZ_DoKey (SDL_RELEASED, event);

break;

case NSKeyDown:

QZ_DoKey (SDL_PRESSED, event);

break;

case NSFlagsChanged:

QZ_DoModifiers( [ event modifierFlags ] );

break;

case NSAppKitDefined:

switch ( [ event subtype ] ) {

case NSApplicationActivatedEventType:

QZ_DoActivate (this);

break;

case NSApplicationDeactivatedEventType:

QZ_DoDeactivate (this);

break;

}

[ NSApp sendEvent:event ];

break;

/* case NSApplicationDefined: break; */

/* case NSPeriodic: break; */

/* case NSCursorUpdate: break; */

default:

[ NSApp sendEvent:event ];

}

}

} while (event != nil);

[ pool release ];