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_QuartzVideo.h"

#include <IOKit/IOMessage.h> // For wake from sleep detection

#include <IOKit/pwr_mgt/IOPMLib.h> // For wake from sleep detection

#include "SDL_QuartzKeys.h"

/*

* In Panther, this header defines device dependent masks for

* right side keys. These definitions only exist in Panther, but

* the header seems to exist at least in Jaguar and probably earlier

* versions of the OS, so this should't break anything.

*/

#include <IOKit/hidsystem/IOLLEvent.h>

/*

* These are not defined before Panther. To keep the code compiling

* on systems without these, I will define if they don't exist.

*/

#ifndef NX_DEVICERCTLKEYMASK

#define NX_DEVICELCTLKEYMASK 0x00000001

#endif

#ifndef NX_DEVICELSHIFTKEYMASK

#define NX_DEVICELSHIFTKEYMASK 0x00000002

#endif

#ifndef NX_DEVICERSHIFTKEYMASK

#define NX_DEVICERSHIFTKEYMASK 0x00000004

#endif

#ifndef NX_DEVICELCMDKEYMASK

#define NX_DEVICELCMDKEYMASK 0x00000008

#endif

#ifndef NX_DEVICERCMDKEYMASK

#define NX_DEVICERCMDKEYMASK 0x00000010

#endif

#ifndef NX_DEVICELALTKEYMASK

#define NX_DEVICELALTKEYMASK 0x00000020

#endif

#ifndef NX_DEVICERALTKEYMASK

#define NX_DEVICERALTKEYMASK 0x00000040

#endif

#ifndef NX_DEVICERCTLKEYMASK

#define NX_DEVICERCTLKEYMASK 0x00002000

#endif

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_RCTRL] = SDLK_RCTRL;

keymap[QZ_RALT] = SDLK_RALT;

keymap[QZ_RMETA] = SDLK_RMETA;

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

basically 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;

}

A key event can contain multiple characters,

or no characters at all. In most cases, it

will contain a single character. If it contains

0 characters, we'll use 0 as the unicode. If it

contains multiple characters, we'll use 0 as

the scancode/keysym.

numChars = [ chars length ];

if (numChars == 1) {

key.scancode = [ event keyCode ];

key.sym = keymap [ key.scancode ];

key.unicode = [ chars characterAtIndex:0 ];

key.mod = KMOD_NONE;

SDL_PrivateKeyboard (state, &key);

}

else if (numChars == 0) {

key.scancode = [ event keyCode ];

key.sym = keymap [ key.scancode ];

key.unicode = 0;

key.mod = KMOD_NONE;

SDL_PrivateKeyboard (state, &key);

}

else /* (numChars > 1) */ {

int i;

for (i = 0; i < numChars; i++) {

key.scancode = 0;

key.sym = 0;

key.unicode = [ chars characterAtIndex:i];

key.mod = KMOD_NONE;

SDL_PrivateKeyboard (state, &key);

}

}

}

/* This is the original behavior, before support was added for

* differentiating between left and right versions of the keys.

*/

static void QZ_DoUnsidedModifiers (_THIS, unsigned int newMods) {

int i;

int bit;

SDL_keysym key;

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 = current_mods & 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_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);

}

}

}

/* This is a helper function for QZ_HandleModifierSide. This

* function reverts back to behavior before the distinction between

* sides was made.

*/

static void QZ_HandleNonDeviceModifier ( _THIS, unsigned int device_independent_mask, unsigned int newMods, unsigned int key_sym) {

unsigned int currentMask, newMask;

SDL_keysym key;

key.scancode = 0;

key.sym = key_sym;

key.unicode = 0;

key.mod = KMOD_NONE;

/* Isolate just the bits we care about in the depedent bits so we can

* figure out what changed

*/

currentMask = current_mods & device_independent_mask;

newMask = newMods & device_independent_mask;

if ( currentMask &&

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

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

else if ( newMask &&

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

SDL_PrivateKeyboard (SDL_PRESSED, &key);

}

}

/* This is a helper function for QZ_HandleModifierSide.

* This function sets the actual SDL_PrivateKeyboard event.

*/

static void QZ_HandleModifierOneSide ( _THIS, unsigned int newMods,

unsigned int key_sym,

unsigned int sided_device_dependent_mask ) {

SDL_keysym key;

unsigned int current_dep_mask, new_dep_mask;

key.scancode = 0;

key.sym = key_sym;

key.unicode = 0;

key.mod = KMOD_NONE;

/* Isolate just the bits we care about in the depedent bits so we can

* figure out what changed

*/

current_dep_mask = current_mods & sided_device_dependent_mask;

new_dep_mask = newMods & sided_device_dependent_mask;

/* We now know that this side bit flipped. But we don't know if

* it went pressed to released or released to pressed, so we must

* find out which it is.

*/

if( new_dep_mask &&

current_dep_mask != new_dep_mask ) {

/* Modifier down event */

SDL_PrivateKeyboard (SDL_PRESSED, &key);

}

else /* Modifier up event */ {

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

}

/* This is a helper function for QZ_DoSidedModifiers.

* This function will figure out if the modifier key is the left or right side,

* e.g. left-shift vs right-shift.

*/

static void QZ_HandleModifierSide ( _THIS, int device_independent_mask,

unsigned int newMods,

unsigned int left_key_sym,

unsigned int right_key_sym,

unsigned int left_device_dependent_mask,

unsigned int right_device_dependent_mask ) {

unsigned int device_dependent_mask = 0;

unsigned int diff_mod = 0;

device_dependent_mask = left_device_dependent_mask | right_device_dependent_mask;

/* On the basis that the device independent mask is set, but there are

* no device dependent flags set, we'll assume that we can't detect this

* keyboard and revert to the unsided behavior.

*/

if ( (device_dependent_mask & newMods) == 0 ) {

/* Revert to the old behavior */

QZ_HandleNonDeviceModifier ( this, device_independent_mask, newMods, left_key_sym );

return;

}

/* XOR the previous state against the new state to see if there's a change */

diff_mod = (device_dependent_mask & current_mods)

^ (device_dependent_mask & newMods);

if ( diff_mod ) {

/* A change in state was found. Isolate the left and right bits

* to handle them separately just in case the values can simulataneously

* change or if the bits don't both exist.

*/

if ( left_device_dependent_mask & diff_mod ) {

QZ_HandleModifierOneSide ( this, newMods, left_key_sym, left_device_dependent_mask );

}

if ( right_device_dependent_mask & diff_mod ) {

QZ_HandleModifierOneSide ( this, newMods, right_key_sym, right_device_dependent_mask );

}

}

}

/* This is a helper function for QZ_DoSidedModifiers.

* This function will release a key press in the case that

* it is clear that the modifier has been released (i.e. one side

* can't still be down).

*/

static void QZ_ReleaseModifierSide ( _THIS,

unsigned int device_independent_mask,

unsigned int newMods,

unsigned int left_key_sym,

unsigned int right_key_sym,

unsigned int left_device_dependent_mask,

unsigned int right_device_dependent_mask ) {

unsigned int device_dependent_mask = 0;

SDL_keysym key;

key.scancode = 0;

key.sym = SDLK_UNKNOWN;

key.unicode = 0;

key.mod = KMOD_NONE;

device_dependent_mask = left_device_dependent_mask | right_device_dependent_mask;

/* On the basis that the device independent mask is set, but there are

* no device dependent flags set, we'll assume that we can't detect this

* keyboard and revert to the unsided behavior.

*/

if ( (device_dependent_mask & current_mods) == 0 ) {

/* In this case, we can't detect the keyboard, so use the left side

* to represent both, and release it.

*/

key.sym = left_key_sym;

SDL_PrivateKeyboard (SDL_RELEASED, &key);

return;

}

/*

* This could have been done in an if-else case because at this point,

* we know that all keys have been released when calling this function.

* But I'm being paranoid so I want to handle each separately,

* so I hope this doesn't cause other problems.

*/

if ( left_device_dependent_mask & current_mods ) {

key.sym = left_key_sym;

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

if ( right_device_dependent_mask & current_mods ) {

key.sym = right_key_sym;

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

}

/* This is a helper function for QZ_DoSidedModifiers.

* This function handles the CapsLock case.

*/

static void QZ_HandleCapsLock (_THIS, unsigned int newMods) {

unsigned int currentMask, newMask;

SDL_keysym key;

key.scancode = 0;

key.sym = SDLK_CAPSLOCK;

key.unicode = 0;

key.mod = KMOD_NONE;

currentMask = current_mods & NSAlphaShiftKeyMask;

newMask = newMods & NSAlphaShiftKeyMask;

if ( currentMask &&

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

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

SDL_PrivateKeyboard (SDL_PRESSED, &key);

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

else if ( newMask &&

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

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

SDL_PrivateKeyboard (SDL_PRESSED, &key);

SDL_PrivateKeyboard (SDL_RELEASED, &key);

}

}

/* This function will handle the modifier keys and also determine the

* correct side of the key.

*/

static void QZ_DoSidedModifiers (_THIS, unsigned int newMods) {

/* Set up arrays for the key syms for the left and right side. */

const unsigned int left_mapping[] = { SDLK_LSHIFT, SDLK_LCTRL, SDLK_LALT, SDLK_LMETA };

const unsigned int right_mapping[] = { SDLK_RSHIFT, SDLK_RCTRL, SDLK_RALT, SDLK_RMETA };

/* Set up arrays for the device dependent masks with indices that

* correspond to the _mapping arrays

*/

const unsigned int left_device_mapping[] = { NX_DEVICELSHIFTKEYMASK, NX_DEVICELCTLKEYMASK, NX_DEVICELALTKEYMASK, NX_DEVICELCMDKEYMASK };

const unsigned int right_device_mapping[] = { NX_DEVICERSHIFTKEYMASK, NX_DEVICERCTLKEYMASK, NX_DEVICERALTKEYMASK, NX_DEVICERCMDKEYMASK };

unsigned int i;

unsigned int bit;

/* Handle CAPSLOCK separately because it doesn't have a left/right side */

QZ_HandleCapsLock ( this, newMods );

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

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

unsigned int currentMask, newMask;

currentMask = current_mods & bit;

newMask = newMods & bit;

/* If the bit is set, we must always examine it because the left

* and right side keys may alternate or both may be pressed.

*/

if ( newMask ) {

QZ_HandleModifierSide ( this, bit, newMods,

left_mapping[i],

right_mapping[i],

left_device_mapping[i],

right_device_mapping[i] );

}

/* If the state changed from pressed to unpressed, we must examine

* the device dependent bits to release the correct keys.

*/

else if ( currentMask &&

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

QZ_ReleaseModifierSide ( this, bit, newMods,

left_mapping[i],

right_mapping[i],

left_device_mapping[i],

right_device_mapping[i] );

}

}

}

/* This function is called to handle the modifiers.

* It will try to distinguish between the left side and right side

* of the keyboard for those modifiers that qualify if the

* operating system version supports it. Otherwise, the code

* will not try to make the distinction.

*/

static void QZ_DoModifiers (_THIS, unsigned int newMods) {

if (current_mods == newMods)

return;

/*

* Starting with Panther (10.3.0), the ability to distinguish between

* left side and right side modifiers is available.

*/

if( system_version >= 0x1030 ) {

QZ_DoSidedModifiers (this, newMods);

}

else {

QZ_DoUnsidedModifiers (this, newMods);

}

}

static void QZ_GetMouseLocation (_THIS, NSPoint *p) {

*p = [ NSEvent mouseLocation ]; /* global coordinates */

if (qz_window)

QZ_PrivateGlobalToLocal (this, p);

QZ_PrivateCocoaToSDL (this, p);

}

static void QZ_DoActivate (_THIS)

{

if (!cursor_should_be_visible)

QZ_HideMouse (this);

/* Regrab input, only if it was previously grabbed */

if ( current_grab_mode == SDL_GRAB_ON ) {

/* Restore cursor location if input was grabbed */

QZ_PrivateWarpCursor (this, cursor_loc.x, cursor_loc.y);

QZ_ChangeGrabState (this, QZ_ENABLE_GRAB);

}

static void QZ_DoDeactivate (_THIS) {

/* Reassociate mouse and cursor */

CGAssociateMouseAndMouseCursorPosition (1);

if (!cursor_should_be_visible)

QZ_ShowMouse (this);

}

void QZ_SleepNotificationHandler (void * refcon,

io_service_t service,

natural_t messageType,

void * messageArgument )

{

SDL_VideoDevice *this = (SDL_VideoDevice*)refcon;

switch(messageType)

{

case kIOMessageSystemWillSleep:

break;

case kIOMessageCanSystemSleep:

break;

case kIOMessageSystemHasPoweredOn:

SDL_PrivateExpose();

break;

}

}

{

CFRunLoopSourceRef rls;

IONotificationPortRef thePortRef;

io_object_t notifier;

NSLog(@"SDL: QZ_SleepNotificationHandler() IORegisterForSystemPower failed.");

rls = IONotificationPortGetRunLoopSource (thePortRef);

CFRunLoopAddSource (CFRunLoopGetCurrent(), rls, kCFRunLoopDefaultMode);

CFRelease (rls);

}

// Try to map Quartz mouse buttons to SDL's lingo...

static int QZ_OtherMouseButtonToSDL(int button)

{

switch (button)

{

case 0:

return(SDL_BUTTON_LEFT); // 1

case 1:

return(SDL_BUTTON_RIGHT); // 3

case 2:

return(SDL_BUTTON_MIDDLE); // 2

}

// >= 3: skip 4 & 5, since those are the SDL mousewheel buttons.

return(button + 3);

}

CGMouseDelta dx, dy;

NSDate *distantPast;

NSEvent *event;

NSRect winRect;

NSAutoreleasePool *pool;

if (!SDL_VideoSurface)

return; /* don't do anything if there's no screen surface. */

/* Update activity every five seconds to prevent screensaver. --ryan. */

static Uint32 screensaverTicks = 0;

Uint32 nowTicks = SDL_GetTicks();

if ((nowTicks - screensaverTicks) > 5000)

{

UpdateSystemActivity(UsrActivity);

screensaverTicks = nowTicks;

}

pool = [ [ NSAutoreleasePool alloc ] init ];

distantPast = [ NSDate distantPast ];

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

/* 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) {

BOOL isInGameWin;

#define DO_MOUSE_DOWN(button) do { \

if ( isInGameWin ) { \

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

expect_mouse_up |= 1<<button; \

} \

} \

else { \

QZ_DoActivate (this); \

} \

[ NSApp sendEvent:event ]; \

} while(0)

#define DO_MOUSE_UP(button) do { \

if ( expect_mouse_up & (1<<button) ) { \

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

expect_mouse_up &= ~(1<<button); \

} \

[ NSApp sendEvent:event ]; \

QZ_DoModifiers(this, [ event modifierFlags ] );

switch (type) {

case NSLeftMouseDown:

last_virtual_button = SDL_BUTTON_RIGHT;

DO_MOUSE_DOWN (SDL_BUTTON_RIGHT);

}

else if ( NSAlternateKeyMask & current_mods ) {

last_virtual_button = SDL_BUTTON_MIDDLE;

DO_MOUSE_DOWN (SDL_BUTTON_MIDDLE);

}

else {

}

break;

case NSLeftMouseUp:

if ( last_virtual_button != 0 ) {

last_virtual_button = 0;

}

else {

}

break;

case NSOtherMouseDown:

case NSRightMouseDown:

button = QZ_OtherMouseButtonToSDL([ event buttonNumber ]);

DO_MOUSE_DOWN (button);

break;

case NSOtherMouseUp:

case NSRightMouseUp:

button = QZ_OtherMouseButtonToSDL([ event buttonNumber ]);

DO_MOUSE_UP (button);

break;

/*

Future: up to 32 "mouse" buttons can be handled.

if ([event subtype] == 7) {

unsigned int buttons;

buttons = [ event data2 ];

*/

break;

case NSLeftMouseDragged:

case NSRightMouseDragged:

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 (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;

QZ_GetMouseLocation (this, &p);

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 ];

/*

Handle grab input+cursor visible by warping the cursor back

into the game window. This still generates a mouse moved event,

but not as a result of the warp (so it's in the right direction).

*/

if ( grab_state == QZ_VISIBLE_GRAB &&

!isInGameWin ) {

NSPoint p;

QZ_GetMouseLocation (this, &p);

if ( p.x < 0.0 )

p.x = 0.0;

if ( p.y < 0.0 )

p.y = 0.0;

if ( p.x >= winRect.size.width )

p.x = winRect.size.width-1;

if ( p.y >= winRect.size.height )

p.y = winRect.size.height-1;

QZ_PrivateWarpCursor (this, p.x, p.y);

}

else

if ( !isInGameWin && (SDL_GetAppState() & SDL_APPMOUSEFOCUS) ) {

SDL_PrivateAppActive (0, SDL_APPMOUSEFOCUS);

if (grab_state == QZ_INVISIBLE_GRAB)

/*The cursor has left the window even though it is

disassociated from the mouse (and therefore

shouldn't move): this can happen with Wacom

tablets, and it effectively breaks the grab, since

mouse down events now go to background

applications. The only possibility to avoid this

seems to be talking to the tablet driver

(AppleEvents) to constrain its mapped area to the

window, which may not be worth the effort. For

now, handle the condition more gracefully than

before by reassociating cursor and mouse until the

cursor enters the window again, making it obvious

to the user that the grab is broken.*/

CGAssociateMouseAndMouseCursorPosition (1);

if (!cursor_should_be_visible)

QZ_ShowMouse (this);

}

else

if ( isInGameWin && !(SDL_GetAppState() & SDL_APPMOUSEFOCUS) ) {

SDL_PrivateAppActive (1, SDL_APPMOUSEFOCUS);

if (!cursor_should_be_visible)

QZ_HideMouse (this);

if (grab_state == QZ_INVISIBLE_GRAB) { /*see comment above*/

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

CGAssociateMouseAndMouseCursorPosition (0);

}

break;

case NSScrollWheel:

dx = [ event deltaX ];

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