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/*
* startSDL.mm, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#import "startSDL.h"
#import "GameChatKeyboardHandler.h"
#include "../Global.h"
#include "CMT.h"
#include "CServerHandler.h"
#include "CFocusableHelper.h"
#include <SDL_main.h>
#include <SDL_events.h>
#include <SDL_render.h>
#include <SDL_system.h>
#import <UIKit/UIKit.h>
@interface SDLViewObserver : NSObject <UIGestureRecognizerDelegate>
@property (nonatomic, strong) GameChatKeyboardHandler * gameChatHandler;
@end
@implementation SDLViewObserver
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
[object removeObserver:self forKeyPath:keyPath];
UIView * view = [object valueForKeyPath:keyPath];
auto longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)];
longPress.minimumPressDuration = 0.2;
[view addGestureRecognizer:longPress];
auto pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinch:)];
[view addGestureRecognizer:pinch];
}
#pragma mark - Gestures
- (void)handleLongPress:(UIGestureRecognizer *)gesture {
// send RMB click
SDL_EventType mouseButtonType;
switch (gesture.state)
{
case UIGestureRecognizerStateBegan:
mouseButtonType = SDL_MOUSEBUTTONDOWN;
break;
case UIGestureRecognizerStateEnded:
mouseButtonType = SDL_MOUSEBUTTONUP;
break;
default:
return;
}
auto renderer = SDL_GetRenderer(mainWindow);
float scaleX, scaleY;
SDL_Rect viewport;
SDL_RenderGetScale(renderer, &scaleX, &scaleY);
SDL_RenderGetViewport(renderer, &viewport);
auto touchedPoint = [gesture locationInView:gesture.view];
auto screenScale = UIScreen.mainScreen.nativeScale;
Sint32 x = (int)touchedPoint.x * screenScale / scaleX - viewport.x;
Sint32 y = (int)touchedPoint.y * screenScale / scaleY - viewport.y;
SDL_Event rmbEvent;
rmbEvent.button = (SDL_MouseButtonEvent){
.type = mouseButtonType,
.button = SDL_BUTTON_RIGHT,
.clicks = 1,
.x = x,
.y = y,
};
SDL_PushEvent(&rmbEvent);
// small hack to prevent cursor jumping
if (mouseButtonType == SDL_MOUSEBUTTONUP)
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.025 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
SDL_Event motionEvent;
motionEvent.motion = (SDL_MouseMotionEvent){
.type = SDL_MOUSEMOTION,
.x = x,
.y = y,
};
SDL_PushEvent(&motionEvent);
});
}
- (void)handlePinch:(UIGestureRecognizer *)gesture {
if(gesture.state != UIGestureRecognizerStateBegan || CSH->state != EClientState::GAMEPLAY)
return;
[self.gameChatHandler triggerInput];
}
#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
return [gestureRecognizer isKindOfClass:[UIPinchGestureRecognizer class]];
}
@end
int startSDL(int argc, char * argv[], BOOL startManually)
{
@autoreleasepool {
auto observer = [SDLViewObserver new];
observer.gameChatHandler = [GameChatKeyboardHandler new];
id __block sdlWindowCreationObserver = [NSNotificationCenter.defaultCenter addObserverForName:UIWindowDidBecomeKeyNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull note) {
[NSNotificationCenter.defaultCenter removeObserver:sdlWindowCreationObserver];
sdlWindowCreationObserver = nil;
UIWindow * sdlWindow = note.object;
[sdlWindow.rootViewController addObserver:observer forKeyPath:NSStringFromSelector(@selector(view)) options:NSKeyValueObservingOptionNew context:NULL];
}];
id textFieldObserver = [NSNotificationCenter.defaultCenter addObserverForName:UITextFieldTextDidEndEditingNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull note) {
removeFocusFromActiveInput();
}];
int result;
if (startManually)
{
// copied from -[SDLUIKitDelegate postFinishLaunch]
SDL_SetMainReady();
SDL_iOSSetEventPump(SDL_TRUE);
result = SDL_main(argc, argv);
SDL_iOSSetEventPump(SDL_FALSE);
}
else
result = SDL_UIKitRunApp(argc, argv, SDL_main);
[NSNotificationCenter.defaultCenter removeObserver:textFieldObserver];
return result;
}
}
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