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SDL_cocoakeyboard.m
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
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
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#include "SDL_cocoavideo.h"
#include "../../events/SDL_keyboard_c.h"
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#include "../../events/scancodes_darwin.h"
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#include <Carbon/Carbon.h>
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#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
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@interface SDLTranslatorResponder : NSTextView
{
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NSString *_markedText;
NSRange _markedRange;
NSRange _selectedRange;
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}
- (void) doCommandBySelector:(SEL)myselector;
@end
@implementation SDLTranslatorResponder
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- (void) insertText:(id) aString
{
const char *str;
NSLog(@"insertText: %@", aString);
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/* Could be NSString or NSAttributedString, so we have
* to test and convert it before return as SDL event */
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if ([aString isKindOfClass: [NSAttributedString class]])
str = [[aString string] UTF8String];
else
str = [aString UTF8String];
SDL_SendKeyboardText(0, str);
}
- (void) doCommandBySelector:(SEL) myselector
{
NSLog(@"doCommandBySelector, passed down");
[super doCommandBySelector: myselector];
}
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- (BOOL) hasMarkedText
{
return _markedText != nil;
}
- (NSRange) markedRange
{
return _markedRange;
}
- (NSRange) selectedRange
{
return _selectedRange;
}
- (void) setMarkedText:(id) aString
selectedRange:(NSRange) selRange
{
if ([aString isKindOfClass: [NSAttributedString class]])
aString = [aString string];
if ([aString length] == 0)
{
[self unmarkText];
return;
}
if (_markedText != aString)
{
[_markedText release];
_markedText = [aString retain];
}
_selectedRange = selRange;
_markedRange = NSMakeRange(0, [aString length]);
NSLog(@"setMarkedText: %@, (%d, %d)", _markedText,
selRange.location, selRange.length);
}
- (void) unmarkText
{
[_markedText release];
_markedText = nil;
}
- (NSRect) firstRectForCharacterRange: (NSRange) theRange
{
return NSMakeRect(0, 0, 0, 0);
}
- (NSAttributedString *) attributedSubstringFromRange: (NSRange) theRange
{
return nil;
}
- (NSInteger) conversationIdentifier
{
return (NSInteger) self;
}
// This method returns the index for character that is
// nearest to thePoint. thPoint is in screen coordinate system.
- (NSUInteger) characterIndexForPoint:(NSPoint) thePoint
{
return 0;
}
// This method is the key to attribute extension.
// We could add new attributes through this method.
// NSInputServer examines the return value of this
// method & constructs appropriate attributed string.
- (NSArray *) validAttributesForMarkedText
{
return [NSArray array];
}
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@end
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/* This is the original behavior, before support was added for
* differentiating between left and right versions of the keys.
*/
static void
DoUnsidedModifiers(int keyboard, unsigned short scancode,
unsigned int oldMods, unsigned int newMods)
{
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const int mapping[] = {
SDL_SCANCODE_CAPSLOCK,
SDL_SCANCODE_LSHIFT,
SDL_SCANCODE_LCTRL,
SDL_SCANCODE_LALT,
SDL_SCANCODE_LGUI
};
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unsigned int i, bit;
/* Iterate through the bits, testing each against the current modifiers */
for (i = 0, bit = NSAlphaShiftKeyMask; bit <= NSCommandKeyMask; bit <<= 1, ++i) {
unsigned int oldMask, newMask;
oldMask = oldMods & bit;
newMask = newMods & bit;
if (oldMask && oldMask != newMask) { /* modifier up event */
/* If this was Caps Lock, we need some additional voodoo to make SDL happy */
if (bit == NSAlphaShiftKeyMask) {
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SDL_SendKeyboardKey(keyboard, SDL_PRESSED, mapping[i]);
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}
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, mapping[i]);
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} else if (newMask && oldMask != newMask) { /* modifier down event */
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SDL_SendKeyboardKey(keyboard, SDL_PRESSED, mapping[i]);
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/* If this was Caps Lock, we need some additional voodoo to make SDL happy */
if (bit == NSAlphaShiftKeyMask) {
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, mapping[i]);
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}
}
}
}
/* This is a helper function for HandleModifierSide. This
* function reverts back to behavior before the distinction between
* sides was made.
*/
static void
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HandleNonDeviceModifier(int keyboard,
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unsigned int device_independent_mask,
unsigned int oldMods,
unsigned int newMods,
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SDL_scancode scancode)
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{
unsigned int oldMask, newMask;
/* Isolate just the bits we care about in the depedent bits so we can
* figure out what changed
*/
oldMask = oldMods & device_independent_mask;
newMask = newMods & device_independent_mask;
if (oldMask && oldMask != newMask) {
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, scancode);
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} else if (newMask && oldMask != newMask) {
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SDL_SendKeyboardKey(keyboard, SDL_PRESSED, scancode);
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}
}
/* This is a helper function for HandleModifierSide.
* This function sets the actual SDL_PrivateKeyboard event.
*/
static void
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HandleModifierOneSide(int keyboard,
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unsigned int oldMods, unsigned int newMods,
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SDL_scancode scancode,
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unsigned int sided_device_dependent_mask)
{
unsigned int old_dep_mask, new_dep_mask;
/* Isolate just the bits we care about in the depedent bits so we can
* figure out what changed
*/
old_dep_mask = oldMods & 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 && old_dep_mask != new_dep_mask) {
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SDL_SendKeyboardKey(keyboard, SDL_PRESSED, scancode);
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} else {
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, scancode);
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}
}
/* This is a helper function for 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
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HandleModifierSide(int keyboard,
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int device_independent_mask,
unsigned int oldMods, unsigned int newMods,
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SDL_scancode left_scancode,
SDL_scancode right_scancode,
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unsigned int left_device_dependent_mask,
unsigned int right_device_dependent_mask)
{
unsigned int device_dependent_mask = (left_device_dependent_mask |
right_device_dependent_mask);
unsigned int diff_mod;
/* 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 */
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HandleNonDeviceModifier(keyboard, device_independent_mask, oldMods, newMods, left_scancode);
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return;
}
/* XOR the previous state against the new state to see if there's a change */
diff_mod = (device_dependent_mask & oldMods) ^
(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) {
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HandleModifierOneSide(keyboard, oldMods, newMods, left_scancode, left_device_dependent_mask);
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}
if (right_device_dependent_mask & diff_mod) {
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HandleModifierOneSide(keyboard, oldMods, newMods, right_scancode, right_device_dependent_mask);
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}
}
}
/* This is a helper function for 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
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ReleaseModifierSide(int keyboard,
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unsigned int device_independent_mask,
unsigned int oldMods, unsigned int newMods,
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SDL_scancode left_scancode,
SDL_scancode right_scancode,
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unsigned int left_device_dependent_mask,
unsigned int right_device_dependent_mask)
{
unsigned int 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 & oldMods) == 0) {
/* In this case, we can't detect the keyboard, so use the left side
* to represent both, and release it.
*/
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, left_scancode);
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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 & oldMods ) {
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, left_scancode);
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}
if ( right_device_dependent_mask & oldMods ) {
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SDL_SendKeyboardKey(keyboard, SDL_RELEASED, right_scancode);
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}
}
/* This is a helper function for DoSidedModifiers.
* This function handles the CapsLock case.
*/
static void
HandleCapsLock(int keyboard, unsigned short scancode,
unsigned int oldMods, unsigned int newMods)
{
unsigned int oldMask, newMask;
oldMask = oldMods & NSAlphaShiftKeyMask;
newMask = newMods & NSAlphaShiftKeyMask;
if (oldMask != newMask) {
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SDL_SendKeyboardKey(keyboard, SDL_PRESSED, SDL_SCANCODE_CAPSLOCK);
SDL_SendKeyboardKey(keyboard, SDL_RELEASED, SDL_SCANCODE_CAPSLOCK);
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}
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oldMask = oldMods & NSNumericPadKeyMask;
newMask = newMods & NSNumericPadKeyMask;
if (oldMask != newMask) {
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SDL_SendKeyboardKey(keyboard, SDL_PRESSED, SDL_SCANCODE_NUMLOCKCLEAR);
SDL_SendKeyboardKey(keyboard, SDL_RELEASED, SDL_SCANCODE_NUMLOCKCLEAR);
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}
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}
/* This function will handle the modifier keys and also determine the
* correct side of the key.
*/
static void
DoSidedModifiers(int keyboard, unsigned short scancode,
unsigned int oldMods, unsigned int newMods)
{
/* Set up arrays for the key syms for the left and right side. */
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const SDL_scancode left_mapping[] = {
SDL_SCANCODE_LSHIFT,
SDL_SCANCODE_LCTRL,
SDL_SCANCODE_LALT,
SDL_SCANCODE_LGUI
};
const SDL_scancode right_mapping[] = {
SDL_SCANCODE_RSHIFT,
SDL_SCANCODE_RCTRL,
SDL_SCANCODE_RALT,
SDL_SCANCODE_RGUI
};
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/* 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, bit;
/* Handle CAPSLOCK separately because it doesn't have a left/right side */
HandleCapsLock(keyboard, scancode, oldMods, newMods);
/* Iterate through the bits, testing each against the old modifiers */
for (i = 0, bit = NSShiftKeyMask; bit <= NSCommandKeyMask; bit <<= 1, ++i) {
unsigned int oldMask, newMask;
oldMask = oldMods & 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) {
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HandleModifierSide(keyboard, bit, oldMods, newMods,
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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 (oldMask && oldMask != newMask) {
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ReleaseModifierSide(keyboard, bit, oldMods, newMods,
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left_mapping[i], right_mapping[i],
left_device_mapping[i], right_device_mapping[i]);
}
}
}
static void
HandleModifiers(_THIS, unsigned short scancode, unsigned int modifierFlags)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
if (modifierFlags == data->modifierFlags) {
return;
}
/*
* Starting with Panther (10.3.0), the ability to distinguish between
* left side and right side modifiers is available.
*/
if (data->osversion >= 0x1030) {
DoSidedModifiers(data->keyboard, scancode, data->modifierFlags, modifierFlags);
} else {
DoUnsidedModifiers(data->keyboard, scancode, data->modifierFlags, modifierFlags);
}
data->modifierFlags = modifierFlags;
}
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static void
UpdateKeymap(SDL_VideoData *data)
{
KeyboardLayoutRef key_layout;
const void *chr_data;
int i;
SDL_scancode scancode;
SDLKey keymap[SDL_NUM_SCANCODES];
/* See if the keymap needs to be updated */
KLGetCurrentKeyboardLayout(&key_layout);
if (key_layout == data->key_layout) {
return;
}
data->key_layout = key_layout;
SDL_GetDefaultKeymap(keymap);
/* Try Unicode data first (preferred as of Mac OS X 10.5) */
KLGetKeyboardLayoutProperty(key_layout, kKLuchrData, &chr_data);
if (chr_data) {
UInt32 keyboard_type = LMGetKbdType();
OSStatus err;
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for (i = 0; i < SDL_arraysize(darwin_scancode_table); i++) {
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UniChar s[8];
UniCharCount len;
UInt32 dead_key_state;
/* Make sure this scancode is a valid character scancode */
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scancode = darwin_scancode_table[i];
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if (scancode == SDL_SCANCODE_UNKNOWN ||
(keymap[scancode] & SDLK_SCANCODE_MASK)) {
continue;
}
dead_key_state = 0;
err = UCKeyTranslate (chr_data, i, kUCKeyActionDown,
0, keyboard_type,
kUCKeyTranslateNoDeadKeysMask,
&dead_key_state, 8, &len, s);
if (err != noErr)
continue;
if (len > 0 && s[0] != 0x10) {
keymap[scancode] = s[0];
}
}
SDL_SetKeymap(data->keyboard, 0, keymap, SDL_NUM_SCANCODES);
return;
}
/* Fall back to older style key map data */
KLGetKeyboardLayoutProperty(key_layout, kKLKCHRData, &chr_data);
if (chr_data) {
for (i = 0; i < 128; i++) {
UInt32 c, state = 0;
/* Make sure this scancode is a valid character scancode */
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scancode = darwin_scancode_table[i];
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if (scancode == SDL_SCANCODE_UNKNOWN ||
(keymap[scancode] & SDLK_SCANCODE_MASK)) {
continue;
}
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c = KeyTranslate (chr_data, i, &state) & 255;
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if (state) {
/* Dead key, process key up */
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c = KeyTranslate (chr_data, i | 128, &state) & 255;
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}
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if (c != 0 && c != 0x10) {
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/* MacRoman to Unicode table, taken from X.org sources */
static const unsigned short macroman_table[128] = {
0xc4, 0xc5, 0xc7, 0xc9, 0xd1, 0xd6, 0xdc, 0xe1,
0xe0, 0xe2, 0xe4, 0xe3, 0xe5, 0xe7, 0xe9, 0xe8,
0xea, 0xeb, 0xed, 0xec, 0xee, 0xef, 0xf1, 0xf3,
0xf2, 0xf4, 0xf6, 0xf5, 0xfa, 0xf9, 0xfb, 0xfc,
0x2020, 0xb0, 0xa2, 0xa3, 0xa7, 0x2022, 0xb6, 0xdf,
0xae, 0xa9, 0x2122, 0xb4, 0xa8, 0x2260, 0xc6, 0xd8,
0x221e, 0xb1, 0x2264, 0x2265, 0xa5, 0xb5, 0x2202, 0x2211,
0x220f, 0x3c0, 0x222b, 0xaa, 0xba, 0x3a9, 0xe6, 0xf8,
0xbf, 0xa1, 0xac, 0x221a, 0x192, 0x2248, 0x2206, 0xab,
0xbb, 0x2026, 0xa0, 0xc0, 0xc3, 0xd5, 0x152, 0x153,
0x2013, 0x2014, 0x201c, 0x201d, 0x2018, 0x2019, 0xf7, 0x25ca,
0xff, 0x178, 0x2044, 0x20ac, 0x2039, 0x203a, 0xfb01, 0xfb02,
0x2021, 0xb7, 0x201a, 0x201e, 0x2030, 0xc2, 0xca, 0xc1,
0xcb, 0xc8, 0xcd, 0xce, 0xcf, 0xcc, 0xd3, 0xd4,
0xf8ff, 0xd2, 0xda, 0xdb, 0xd9, 0x131, 0x2c6, 0x2dc,
0xaf, 0x2d8, 0x2d9, 0x2da, 0xb8, 0x2dd, 0x2db, 0x2c7,
};
if (c >= 128) {
c = macroman_table[c - 128];
}
keymap[scancode] = c;
}
}
SDL_SetKeymap(data->keyboard, 0, keymap, SDL_NUM_SCANCODES);
return;
}
}
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void
Cocoa_InitKeyboard(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
SDL_Keyboard keyboard;
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NSAutoreleasePool *pool;
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pool = [[NSAutoreleasePool alloc] init];
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data->fieldEdit = [[SDLTranslatorResponder alloc] initWithFrame:NSMakeRect(0.0, 0.0, 0.0, 0.0)];
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[pool release];
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SDL_zero(keyboard);
data->keyboard = SDL_AddKeyboard(&keyboard, -1);
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UpdateKeymap(data);
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/* Set our own names for the platform-dependent but layout-independent keys */
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/* This key is NumLock on the MacBook keyboard. :) */
/*SDL_SetScancodeName(SDL_SCANCODE_NUMLOCKCLEAR, "Clear");*/
SDL_SetScancodeName(SDL_SCANCODE_LALT, "Left Option");
SDL_SetScancodeName(SDL_SCANCODE_LGUI, "Left Command");
SDL_SetScancodeName(SDL_SCANCODE_RALT, "Right Option");
SDL_SetScancodeName(SDL_SCANCODE_RGUI, "Right Command");
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}
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void
Cocoa_HandleKeyEvent(_THIS, NSEvent *event)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
unsigned short scancode = [event keyCode];
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SDL_scancode code;
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const char *text;
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if ((scancode == 10 || scancode == 50) && KBGetLayoutType(LMGetKbdType()) == kKeyboardISO) {
/* see comments in SDL_cocoakeys.h */
scancode = 60 - scancode;
}
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if (scancode < SDL_arraysize(darwin_scancode_table)) {
code = darwin_scancode_table[scancode];
594
595
}
else {
596
/* Hmm, does this ever happen? If so, need to extend the keymap... */
597
code = SDL_SCANCODE_UNKNOWN;
598
599
600
601
}
switch ([event type]) {
case NSKeyDown:
602
if (![event isARepeat]) {
603
604
605
606
/* See if we need to rebuild the keyboard layout */
UpdateKeymap(data);
SDL_SendKeyboardKey(data->keyboard, SDL_PRESSED, code);
607
#if 1
608
if (code == SDL_SCANCODE_UNKNOWN) {
609
610
611
fprintf(stderr, "The key you just pressed is not recognized by SDL. To help get this fixed, report this to the SDL mailing list <sdl@libsdl.org> or to Christian Walther <cwalther@gmx.ch>. Mac virtual key code is %d.\n", scancode);
}
#endif
612
}
613
if (SDL_EventState(SDL_TEXTINPUT, SDL_QUERY)) {
614
/* FIXME CW 2007-08-16: only send those events to the field editor for which we actually want text events, not e.g. esc or function keys. Arrow keys in particular seem to produce crashes sometimes. */
615
616
617
618
619
620
621
622
NSLog(@"interpretKeyEvents");
if (! [[data->fieldEdit superview] isEqual: [[event window] contentView]])
{
NSLog(@"add fieldEdit to window contentView");
[data->fieldEdit removeFromSuperview];
[[[event window] contentView] addSubview: data->fieldEdit];
[[event window] makeFirstResponder: data->fieldEdit];
}
623
[data->fieldEdit interpretKeyEvents:[NSArray arrayWithObject:event]];
624
#if 0
625
626
627
text = [[event characters] UTF8String];
if(text && *text) {
SDL_SendKeyboardText(data->keyboard, text);
628
[data->fieldEdit setString:@""];
629
}
630
#endif
631
632
633
}
break;
case NSKeyUp:
634
SDL_SendKeyboardKey(data->keyboard, SDL_RELEASED, code);
635
636
break;
case NSFlagsChanged:
637
/* FIXME CW 2007-08-14: check if this whole mess that takes up half of this file is really necessary */
638
639
HandleModifiers(_this, scancode, [event modifierFlags]);
break;
640
641
642
643
644
default: /* just to avoid compiler warnings */
break;
}
}
645
646
647
648
void
Cocoa_QuitKeyboard(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
649
NSAutoreleasePool *pool;
650
651
SDL_DelKeyboard(data->keyboard);
652
653
pool = [[NSAutoreleasePool alloc] init];
654
[data->fieldEdit release];
655
[pool release];
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658
}
/* vi: set ts=4 sw=4 expandtab: */