/*

SDL - Simple DirectMedia Layer

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

*/

#import "SDL_uikitview.h"

#if SDL_IPHONE_KEYBOARD

#import "SDL_keyboard_c.h"

#import "keyinfotable.h"

#import "SDL_uikitappdelegate.h"

#import "SDL_uikitwindow.h"

#endif

@implementation SDL_uikitview

- (void)dealloc {

#if SDL_IPHONE_KEYBOARD

SDL_DelKeyboard(0);

[textField release];

#endif

[super dealloc];

}

- (id)initWithFrame:(CGRect)frame {

self = [super initWithFrame: frame];

#if SDL_IPHONE_KEYBOARD

[self initializeKeyboard];

#endif

int i;

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

}

self.multipleTouchEnabled = YES;

return self;

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

NSEnumerator *enumerator = [touches objectEnumerator];

/* associate touches with mice, so long as we have slots */

int i;

int found = 0;

for(i=0; touch && i < MAX_SIMULTANEOUS_TOUCHES; i++) {

/* check if this mouse is already tracking a touch */

if (mice[i].driverdata != NULL) {

continue;

}

/*

mouse not associated with anything right now,

associate the touch with this mouse

*/

found = 1;

/* save old mouse so we can switch back */

int oldMouse = SDL_SelectMouse(-1);

/* select this slot's mouse */

SDL_SelectMouse(i);

CGPoint locationInView = [touch locationInView: self];

/* set driver data to touch object, we'll use touch object later */

mice[i].driverdata = [touch retain];

/* send moved event */

SDL_SendMouseMotion(i, 0, locationInView.x, locationInView.y, 0);

/* send mouse down event */

SDL_SendMouseButton(i, SDL_PRESSED, SDL_BUTTON_LEFT);

/* re-calibrate relative mouse motion */

SDL_GetRelativeMouseState(i, NULL, NULL);

/* switch back to our old mouse */

SDL_SelectMouse(oldMouse);

/* grab next touch */

touch = (UITouch*)[enumerator nextObject];

}

#else

if (touch) {

CGPoint locationInView = [touch locationInView: self];

/* send moved event */

SDL_SendMouseMotion(NULL, 0, locationInView.x, locationInView.y);

/* send mouse down event */

SDL_SendMouseButton(NULL, SDL_PRESSED, SDL_BUTTON_LEFT);

}

#endif

}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

NSEnumerator *enumerator = [touches objectEnumerator];

/* search for the mouse slot associated with this touch */

int i, found = NO;

for (i=0; i<MAX_SIMULTANEOUS_TOUCHES && !found; i++) {

if (mice[i].driverdata == touch) {

/* found the mouse associate with the touch */

[(UITouch*)(mice[i].driverdata) release];

mice[i].driverdata = NULL;

/* send mouse up */

SDL_SendMouseButton(i, SDL_RELEASED, SDL_BUTTON_LEFT);

/* discontinue search for this touch */

found = YES;

}

}

/* grab next touch */

touch = (UITouch*)[enumerator nextObject];

}

#else

if (touch) {

/* send mouse up */

SDL_SendMouseButton(NULL, SDL_RELEASED, SDL_BUTTON_LEFT);

}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {

/*

this can happen if the user puts more than 5 touches on the screen

at once, or perhaps in other circumstances. Usually (it seems)

all active touches are canceled.

*/

[self touchesEnded: touches withEvent: event];

}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {

NSEnumerator *enumerator = [touches objectEnumerator];

/* try to find the mouse associated with this touch */

int i, found = NO;

for (i=0; i<MAX_SIMULTANEOUS_TOUCHES && !found; i++) {

if (mice[i].driverdata == touch) {

/* found proper mouse */

CGPoint locationInView = [touch locationInView: self];

/* send moved event */

SDL_SendMouseMotion(i, 0, locationInView.x, locationInView.y, 0);

/* discontinue search */

found = YES;

}

}

/* grab next touch */

touch = (UITouch*)[enumerator nextObject];

}

#else

if (touch) {

CGPoint locationInView = [touch locationInView: self];

/* send moved event */

SDL_SendMouseMotion(NULL, 0, locationInView.x, locationInView.y);

}

/*

---- Keyboard related functionality below this line ----

*/

#if SDL_IPHONE_KEYBOARD

/* Is the iPhone virtual keyboard visible onscreen? */

- (BOOL)keyboardVisible {

return keyboardVisible;

}

/* Set ourselves up as a UITextFieldDelegate */

- (void)initializeKeyboard {

textField = [[[UITextField alloc] initWithFrame: CGRectZero] autorelease];

textField.delegate = self;

/* placeholder so there is something to delete! */

textField.text = @" ";

/* set UITextInputTrait properties, mostly to defaults */

textField.autocapitalizationType = UITextAutocapitalizationTypeNone;

textField.autocorrectionType = UITextAutocorrectionTypeNo;

textField.enablesReturnKeyAutomatically = NO;

textField.keyboardAppearance = UIKeyboardAppearanceDefault;

textField.keyboardType = UIKeyboardTypeDefault;

textField.returnKeyType = UIReturnKeyDefault;

textField.secureTextEntry = NO;

textField.hidden = YES;

keyboardVisible = NO;

/* add the UITextField (hidden) to our view */

[self addSubview: textField];

/* create our SDL_Keyboard */

SDL_Keyboard keyboard;

SDL_zero(keyboard);

SDL_AddKeyboard(&keyboard, 0);

SDLKey keymap[SDL_NUM_SCANCODES];

SDL_GetDefaultKeymap(keymap);

SDL_SetKeymap(0, 0, keymap, SDL_NUM_SCANCODES);

}

/* reveal onscreen virtual keyboard */

- (void)showKeyboard {

keyboardVisible = YES;

[textField becomeFirstResponder];

}

/* hide onscreen virtual keyboard */

- (void)hideKeyboard {

keyboardVisible = NO;

[textField resignFirstResponder];

}

/* UITextFieldDelegate method. Invoked when user types something. */

- (BOOL)textField:(UITextField *)_textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

if ([string length] == 0) {

/* it wants to replace text with nothing, ie a delete */

SDL_SendKeyboardKey( 0, SDL_PRESSED, SDL_SCANCODE_DELETE);

SDL_SendKeyboardKey( 0, SDL_RELEASED, SDL_SCANCODE_DELETE);

}

else {

/* go through all the characters in the string we've been sent

and convert them to key presses */

int i;

for (i=0; i<[string length]; i++) {

unichar c = [string characterAtIndex: i];

Uint16 mod = 0;

SDL_scancode code;

if (c < 127) {

/* figure out the SDL_scancode and SDL_keymod for this unichar */

code = unicharToUIKeyInfoTable[c].code;

mod = unicharToUIKeyInfoTable[c].mod;

}

else {

/* we only deal with ASCII right now */

code = SDL_SCANCODE_UNKNOWN;

mod = 0;

}

if (mod & KMOD_SHIFT) {

/* If character uses shift, press shift down */

SDL_SendKeyboardKey( 0, SDL_PRESSED, SDL_SCANCODE_LSHIFT);

}

/* send a keydown and keyup even for the character */

SDL_SendKeyboardKey( 0, SDL_PRESSED, code);

SDL_SendKeyboardKey( 0, SDL_RELEASED, code);

if (mod & KMOD_SHIFT) {

/* If character uses shift, press shift back up */

SDL_SendKeyboardKey( 0, SDL_RELEASED, SDL_SCANCODE_LSHIFT);

}

}

}

return NO; /* don't allow the edit! (keep placeholder text there) */

}

/* Terminates the editing session */

- (BOOL)textFieldShouldReturn:(UITextField*)_textField {

[self hideKeyboard];

return YES;

}

#endif

@end

/* iPhone keyboard addition functions */

#if SDL_IPHONE_KEYBOARD

SDL_WindowData *data;

SDL_uikitview *view;

if (NULL == window) {

SDL_SetError("Window does not exist");

return -1;

}

data = (SDL_WindowData *)window->driverdata;

view = data->view;

if (nil == view) {

SDL_SetError("Window has no view");

return -1;

}

else {

[view showKeyboard];

return 0;

}

}

SDL_WindowData *data;

SDL_uikitview *view;

if (NULL == window) {

SDL_SetError("Window does not exist");

return -1;

}

data = (SDL_WindowData *)window->driverdata;

view = data->view;

if (NULL == view) {

SDL_SetError("Window has no view");

return -1;

}

else {

[view hideKeyboard];

return 0;

}

}

SDL_WindowData *data;

SDL_uikitview *view;

if (NULL == window) {

SDL_SetError("Window does not exist");

return -1;

}

data = (SDL_WindowData *)window->driverdata;

view = data->view;

if (NULL == view) {

SDL_SetError("Window has no view");

return 0;

}

else {

return view.keyboardVisible;

}

}

SDL_WindowData *data;

SDL_uikitview *view;

if (NULL == window) {

SDL_SetError("Window does not exist");

return -1;

}

data = (SDL_WindowData *)window->driverdata;

view = data->view;

if (NULL == view) {

SDL_SetError("Window has no view");

return -1;

}

else {

if (SDL_iPhoneKeyboardIsShown(window)) {

SDL_iPhoneKeyboardHide(window);

}

else {

}

return 0;

}

}

#else

/* stubs, used if compiled without keyboard support */

SDL_SetError("Not compiled with keyboard support");

return -1;

}

SDL_SetError("Not compiled with keyboard support");

return -1;

}

return 0;

}

SDL_SetError("Not compiled with keyboard support");

return -1;

}