/*

Simple DirectMedia Layer

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_UIKIT

#include "SDL_video.h"

#include "SDL_assert.h"

#include "SDL_hints.h"

#include "../SDL_sysvideo.h"

#include "../../events/SDL_events_c.h"

#import "SDL_uikitviewcontroller.h"

#import "SDL_uikitmessagebox.h"

#include "SDL_uikitvideo.h"

#include "SDL_uikitmodes.h"

#include "SDL_uikitwindow.h"

#if SDL_IPHONE_KEYBOARD

#include "keyinfotable.h"

#endif

SDL_AppleTVControllerUIHintChanged(void *userdata, const char *name, const char *oldValue, const char *hint)

{

@autoreleasepool {

SDL_uikitviewcontroller *viewcontroller = (__bridge SDL_uikitviewcontroller *) userdata;

viewcontroller.controllerUserInteractionEnabled = hint && (*hint != '0');

}

}

#endif

#if !TARGET_OS_TV

static void SDLCALL

SDL_HideHomeIndicatorHintChanged(void *userdata, const char *name, const char *oldValue, const char *hint)

{

@autoreleasepool {

SDL_uikitviewcontroller *viewcontroller = (__bridge SDL_uikitviewcontroller *) userdata;

viewcontroller.homeIndicatorHidden = (hint && *hint) ? SDL_atoi(hint) : -1;

if (@available(iOS 11.0, *)) {

[viewcontroller setNeedsUpdateOfHomeIndicatorAutoHidden];

[viewcontroller setNeedsUpdateOfScreenEdgesDeferringSystemGestures];

}

}

}

#endif

@implementation SDL_uikitviewcontroller {

CADisplayLink *displayLink;

int animationInterval;

void (*animationCallback)(void*);

void *animationCallbackParam;

#if SDL_IPHONE_KEYBOARD

UITextField *textField;

NSString *changeText;

NSString *obligateForBackspace;

#endif

}

@synthesize window;

- (instancetype)initWithSDLWindow:(SDL_Window *)_window

{

if (self = [super initWithNibName:nil bundle:nil]) {

self.window = _window;

#if SDL_IPHONE_KEYBOARD

[self initKeyboard];

#if TARGET_OS_TV

SDL_AddHintCallback(SDL_HINT_APPLE_TV_CONTROLLER_UI_EVENTS,

SDL_AppleTVControllerUIHintChanged,

(__bridge void *) self);

#endif

#if !TARGET_OS_TV

SDL_AddHintCallback(SDL_HINT_IOS_HIDE_HOME_INDICATOR,

SDL_HideHomeIndicatorHintChanged,

(__bridge void *) self);

#endif

return self;

}

- (void)dealloc

{

#if SDL_IPHONE_KEYBOARD

[self deinitKeyboard];

#endif

#if TARGET_OS_TV

SDL_DelHintCallback(SDL_HINT_APPLE_TV_CONTROLLER_UI_EVENTS,

SDL_AppleTVControllerUIHintChanged,

(__bridge void *) self);

#endif

#if !TARGET_OS_TV

SDL_DelHintCallback(SDL_HINT_IOS_HIDE_HOME_INDICATOR,

SDL_HideHomeIndicatorHintChanged,

(__bridge void *) self);

#endif

}

- (void)setAnimationCallback:(int)interval

callback:(void (*)(void*))callback

callbackParam:(void*)callbackParam

{

[self stopAnimation];

animationInterval = interval;

animationCallback = callback;

animationCallbackParam = callbackParam;

if (animationCallback) {

[self startAnimation];

}

}

- (void)startAnimation

{

displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(doLoop:)];

#ifdef __IPHONE_10_3

SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;

if ([displayLink respondsToSelector:@selector(preferredFramesPerSecond)]

&& data != nil && data.uiwindow != nil

&& [data.uiwindow.screen respondsToSelector:@selector(maximumFramesPerSecond)]) {

displayLink.preferredFramesPerSecond = data.uiwindow.screen.maximumFramesPerSecond / animationInterval;

} else

#endif

{

#if __IPHONE_OS_VERSION_MIN_REQUIRED < 100300

[displayLink setFrameInterval:animationInterval];

#endif

}

[displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];

}

- (void)stopAnimation

{

[displayLink invalidate];

displayLink = nil;

}

- (void)doLoop:(CADisplayLink*)sender

{

/* Don't run the game loop while a messagebox is up */

if (!UIKit_ShowingMessageBox()) {

/* See the comment in the function definition. */

UIKit_GL_RestoreCurrentContext();

animationCallback(animationCallbackParam);

}

}

- (void)loadView

{

/* Do nothing. */

}

- (void)viewDidLayoutSubviews

{

const CGSize size = self.view.bounds.size;

int w = (int) size.width;

int h = (int) size.height;

SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, w, h);

}

- (NSUInteger)supportedInterfaceOrientations

{

return UIKit_GetSupportedOrientations(window);

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orient

{

return ([self supportedInterfaceOrientations] & (1 << orient)) != 0;

}

- (BOOL)prefersStatusBarHidden

{

BOOL hidden = (window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_BORDERLESS)) != 0;

return hidden;

}

- (BOOL)prefersHomeIndicatorAutoHidden

{

BOOL hidden = NO;

if (self.homeIndicatorHidden == 1) {

hidden = YES;

}

return hidden;

}

- (UIRectEdge)preferredScreenEdgesDeferringSystemGestures

{

if (self.homeIndicatorHidden >= 0) {

if (self.homeIndicatorHidden == 2) {

return UIRectEdgeAll;

} else {

return UIRectEdgeNone;

}

}

/* By default, fullscreen and borderless windows get all screen gestures */

if ((window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_BORDERLESS)) != 0) {

return UIRectEdgeAll;

} else {

return UIRectEdgeNone;

}

/*

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

*/

#if SDL_IPHONE_KEYBOARD

@synthesize textInputRect;

@synthesize keyboardHeight;

@synthesize keyboardVisible;

/* Set ourselves up as a UITextFieldDelegate */

- (void)initKeyboard

{

changeText = nil;

obligateForBackspace = @" "; /* 64 space */

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

textField.delegate = self;

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

/* 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;

NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

[center addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];

[center addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];

}

- (void)setView:(UIView *)view

{

[super setView:view];

[view addSubview:textField];

if (keyboardVisible) {

[self showKeyboard];

}

}

/* willRotateToInterfaceOrientation and didRotateFromInterfaceOrientation are deprecated in iOS 8+ in favor of viewWillTransitionToSize */

#if TARGET_OS_TV || __IPHONE_OS_VERSION_MIN_REQUIRED >= 80000

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator

{

[super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];

rotatingOrientation = TRUE;

[coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {}

completion:^(id<UIViewControllerTransitionCoordinatorContext> context) {

rotatingOrientation = FALSE;

}];

}

#else

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {

[super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];

rotatingOrientation = TRUE;

}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {

[super didRotateFromInterfaceOrientation:fromInterfaceOrientation];

rotatingOrientation = FALSE;

}

#endif /* TARGET_OS_TV || __IPHONE_OS_VERSION_MIN_REQUIRED >= 80000 */

- (void)deinitKeyboard

{

NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

[center removeObserver:self name:UIKeyboardWillShowNotification object:nil];

[center removeObserver:self name:UIKeyboardWillHideNotification object:nil];

}

/* reveal onscreen virtual keyboard */

- (void)showKeyboard

{

keyboardVisible = YES;

if (textField.window) {

}

}

/* hide onscreen virtual keyboard */

- (void)hideKeyboard

{

keyboardVisible = NO;

[textField resignFirstResponder];

}

- (void)keyboardWillShow:(NSNotification *)notification

{

/* The keyboard rect is in the coordinate space of the screen/window, but we

* want its height in the coordinate space of the view. */

kbrect = [self.view convertRect:kbrect fromView:nil];

[self setKeyboardHeight:(int)kbrect.size.height];

}

- (void)keyboardWillHide:(NSNotification *)notification

{

[self setKeyboardHeight:0];

}

- (void)textFieldTextDidChange:(NSNotification *)notification

{

if (changeText!=nil && textField.markedTextRange == nil)

{

NSUInteger len = changeText.length;

if (len > 0) {

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

* convert them to key presses */

int i;

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

unichar c = [changeText characterAtIndex:i];

SDL_Scancode code;

Uint16 mod;

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(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);

}

}

SDL_SendKeyboardText([changeText UTF8String]);

}

changeText = nil;

}

}

- (void)updateKeyboard

{

CGAffineTransform t = self.view.transform;

CGPoint offset = CGPointMake(0.0, 0.0);

CGRect frame = UIKit_ComputeViewFrame(window, self.view.window.screen);

if (self.keyboardHeight) {

int rectbottom = self.textInputRect.y + self.textInputRect.h;

int keybottom = self.view.bounds.size.height - self.keyboardHeight;

if (keybottom < rectbottom) {

offset.y = keybottom - rectbottom;

}

}

/* Apply this view's transform (except any translation) to the offset, in

* order to orient it correctly relative to the frame's coordinate space. */

t.tx = 0.0;

t.ty = 0.0;

offset = CGPointApplyAffineTransform(offset, t);

/* Apply the updated offset to the view's frame. */

frame.origin.x += offset.x;

frame.origin.y += offset.y;

self.view.frame = frame;

}

- (void)setKeyboardHeight:(int)height

{

keyboardVisible = height > 0;

keyboardHeight = height;

[self updateKeyboard];

}

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

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

{

NSUInteger len = string.length;

if (len == 0) {

changeText = nil;

if (textField.markedTextRange == nil) {

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

SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_BACKSPACE);

SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_BACKSPACE);

if (textField.text.length < 16) {

textField.text = obligateForBackspace;

}

} else {

changeText = string;

}

/* Terminates the editing session */

- (BOOL)textFieldShouldReturn:(UITextField*)_textField

{

SDL_SendKeyboardKey(SDL_PRESSED, SDL_SCANCODE_RETURN);

SDL_SendKeyboardKey(SDL_RELEASED, SDL_SCANCODE_RETURN);

if (SDL_GetHintBoolean(SDL_HINT_RETURN_KEY_HIDES_IME, SDL_FALSE)) {

SDL_StopTextInput();

}

return YES;

}

#endif

@end

/* iPhone keyboard addition functions */

#if SDL_IPHONE_KEYBOARD

static SDL_uikitviewcontroller *

GetWindowViewController(SDL_Window * window)

{

if (!window || !window->driverdata) {

SDL_SetError("Invalid window");

return nil;

}

SDL_WindowData *data = (__bridge SDL_WindowData *)window->driverdata;

return data.viewcontroller;

}

SDL_bool

UIKit_HasScreenKeyboardSupport(_THIS)

{

return SDL_TRUE;

}

void

UIKit_ShowScreenKeyboard(_THIS, SDL_Window *window)

{

@autoreleasepool {

SDL_uikitviewcontroller *vc = GetWindowViewController(window);

[vc showKeyboard];

}

}

void

UIKit_HideScreenKeyboard(_THIS, SDL_Window *window)

{

@autoreleasepool {

SDL_uikitviewcontroller *vc = GetWindowViewController(window);

[vc hideKeyboard];

}

}

SDL_bool

UIKit_IsScreenKeyboardShown(_THIS, SDL_Window *window)

{

@autoreleasepool {

SDL_uikitviewcontroller *vc = GetWindowViewController(window);

if (vc != nil) {

}

return SDL_FALSE;

}

}

void

UIKit_SetTextInputRect(_THIS, SDL_Rect *rect)

{

if (!rect) {

SDL_InvalidParamError("rect");

return;

}

@autoreleasepool {

SDL_uikitviewcontroller *vc = GetWindowViewController(SDL_GetFocusWindow());

if (vc != nil) {

vc.textInputRect = *rect;

if (vc.keyboardVisible) {

[vc updateKeyboard];

}

}

}

}

#endif /* SDL_IPHONE_KEYBOARD */

#endif /* SDL_VIDEO_DRIVER_UIKIT */

/* vi: set ts=4 sw=4 expandtab: */