SDL - Simple DirectMedia Layer

Copyright (C) 1997-2011 Sam Lantinga

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"

#include "../../events/SDL_keyboard_c.h"

#include "../../events/SDL_mouse_c.h"

#if SDL_IPHONE_KEYBOARD

#import "keyinfotable.h"

#import "SDL_uikitappdelegate.h"

#import "SDL_uikitwindow.h"

#endif

@implementation SDL_uikitview

- (void)dealloc {

}

- (id)initWithFrame:(CGRect)frame {

self = [super initWithFrame: frame];

[self initializeKeyboard];

#endif

self.multipleTouchEnabled = YES;

SDL_Touch touch;

touch.id = 0; //TODO: Should be -1?

//touch.driverdata = SDL_malloc(sizeof(EventTouchData));

//EventTouchData* data = (EventTouchData*)(touch.driverdata);

touch.x_min = 0;

touch.x_max = frame.size.width;

touch.native_xres = touch.x_max - touch.x_min;

touch.y_min = 0;

touch.y_max = frame.size.height;

touch.native_yres = touch.y_max - touch.y_min;

touch.pressure_min = 0;

touch.pressure_max = 1;

touch.native_pressureres = touch.pressure_max - touch.pressure_min;

touchId = SDL_AddTouch(&touch, "IPHONE SCREEN");

}

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

NSEnumerator *enumerator = [touches objectEnumerator];

UITouch *touch = (UITouch*)[enumerator nextObject];

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);

}

while(touch) {

CGPoint locationInView = [touch locationInView: self];

#ifdef IPHONE_TOUCH_EFFICIENT_DANGEROUS

//FIXME: TODO: Using touch as the fingerId is potentially dangerous

//It is also much more efficient than storing the UITouch pointer

//and comparing it to the incoming event.

SDL_SendFingerDown(touchId,(long)touch,

SDL_TRUE,locationInView.x,locationInView.y,

1);

int i;

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

if(finger[i] == NULL) {

finger[i] = touch;

SDL_SendFingerDown(touchId,i,

SDL_TRUE,locationInView.x,locationInView.y,

1);

break;

}

}

touch = (UITouch*)[enumerator nextObject];

}

}

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

NSEnumerator *enumerator = [touches objectEnumerator];

UITouch *touch = (UITouch*)[enumerator nextObject];

if (touch) {

/* send mouse up */

SDL_SendMouseButton(NULL, SDL_RELEASED, SDL_BUTTON_LEFT);

}

while(touch) {

CGPoint locationInView = [touch locationInView: self];

#ifdef IPHONE_TOUCH_EFFICIENT_DANGEROUS

SDL_SendFingerDown(touchId,(long)touch,

SDL_FALSE,locationInView.x,locationInView.y,

1);

int i;

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

if(finger[i] == touch) {

SDL_SendFingerDown(touchId,i,

SDL_FALSE,locationInView.x,locationInView.y,

1);

break;

}

}

touch = (UITouch*)[enumerator nextObject];

}

}

- (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];

UITouch *touch = (UITouch*)[enumerator nextObject];

if (touch) {

CGPoint locationInView = [touch locationInView: self];

/* send moved event */

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

}

while(touch) {

CGPoint locationInView = [touch locationInView: self];

#ifdef IPHONE_TOUCH_EFFICIENT_DANGEROUS

SDL_SendTouchMotion(touchId,(long)touch,

SDL_FALSE,locationInView.x,locationInView.y,

1);

int i;

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

if(finger[i] == touch) {

SDL_SendTouchMotion(touchId,i,

SDL_FALSE,locationInView.x,locationInView.y,

1);

break;

}

}

touch = (UITouch*)[enumerator nextObject];

}

}

/*

*/

#if SDL_IPHONE_KEYBOARD

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

- (BOOL)keyboardVisible {

}

/* Set ourselves up as a UITextFieldDelegate */

- (void)initializeKeyboard {

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

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];

[textField release];

}

/* 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(SDL_PRESSED, SDL_SCANCODE_DELETE);

SDL_SendKeyboardKey(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;

if (c < 127) {

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(SDL_PRESSED, SDL_SCANCODE_LSHIFT);

}

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

SDL_SendKeyboardKey(SDL_PRESSED, code);

SDL_SendKeyboardKey(SDL_RELEASED, code);

if (mod & KMOD_SHIFT) {

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

SDL_SendKeyboardKey(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 {

SDL_iPhoneKeyboardShow(window);

}

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;

}

}

SDL_SetError("Not compiled with keyboard support");

return -1;

}

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