265 lines
8.1 KiB
Plaintext
265 lines
8.1 KiB
Plaintext
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#import "UnityView.h"
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#include "UI/Keyboard.h"
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#include <sys/time.h>
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#include <map>
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#include <vector>
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static NSArray* keyboardCommands = nil;
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extern "C" int UnityGetAppleTVRemoteAllowExitToMenu();
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extern "C" void UnitySetAppleTVRemoteAllowExitToMenu(int val);
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@implementation UnityView (Keyboard)
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// Keyboard shortcuts don't provide events for key up
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// Keyboard shortcut callbacks are called with 0.4 (first time) and 0.1 (following times) seconds interval while pressing the key
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// Below we implement key expiration mechanism where key up event is generated if shortcut callback
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// is not called for specific key for more than <kKeyTimeoutInSeconds>
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typedef std::map<int, double> KeyMap;
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static const double kKeyTimeoutInSeconds = 0.5;
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static KeyMap& GetKeyMap()
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{
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static KeyMap s_Map;
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return s_Map;
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}
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static double GetTimeInSeconds()
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{
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timeval now;
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gettimeofday(&now, NULL);
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return now.tv_sec + now.tv_usec / 1000000.0;
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}
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- (void)createKeyboard
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{
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// only English keyboard layout is supported
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NSString* baseLayout = @"1234567890-=qwertyuiop[]asdfghjkl;'\\`zxcvbnm,./!@#$%^&*()_+{}:\"|<>?~ \t\r\b\\";
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NSString* numpadLayout = @"1234567890-=*+/.\r";
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NSString* upperCaseLetters = @"QWERTYUIOPASDFGHJKLZXCVBNM";
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size_t sizeOfKeyboardCommands = baseLayout.length + numpadLayout.length + upperCaseLetters.length + 11;
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NSMutableArray* commands = [NSMutableArray arrayWithCapacity: sizeOfKeyboardCommands];
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void (^addKey)(NSString *keyName, UIKeyModifierFlags modifierFlags) = ^(NSString *keyName, UIKeyModifierFlags modifierFlags)
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{
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UIKeyCommand* command = [UIKeyCommand keyCommandWithInput: keyName modifierFlags: modifierFlags action: @selector(handleCommand:)];
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#if UNITY_HAS_IOSSDK_15_0
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if (@available(iOS 15.0, *))
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command.wantsPriorityOverSystemBehavior = YES;
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#endif
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[commands addObject: command];
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};
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for (NSInteger i = 0; i < baseLayout.length; ++i)
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{
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NSString* input = [baseLayout substringWithRange: NSMakeRange(i, 1)];
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addKey(input, kNilOptions);
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}
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for (NSInteger i = 0; i < numpadLayout.length; ++i)
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{
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NSString* input = [numpadLayout substringWithRange: NSMakeRange(i, 1)];
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addKey(input, UIKeyModifierNumericPad);
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}
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for (NSInteger i = 0; i < upperCaseLetters.length; ++i)
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{
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NSString* input = [upperCaseLetters substringWithRange: NSMakeRange(i, 1)];
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addKey(input, UIKeyModifierShift);
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}
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// pageUp, pageDown
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addKey(@"UIKeyInputPageUp", kNilOptions);
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addKey(@"UIKeyInputPageDown", kNilOptions);
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// up, down, left, right, esc
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addKey(UIKeyInputUpArrow, kNilOptions);
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addKey(UIKeyInputDownArrow, kNilOptions);
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addKey(UIKeyInputLeftArrow, kNilOptions);
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addKey(UIKeyInputRightArrow, kNilOptions);
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addKey(UIKeyInputEscape, kNilOptions);
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// caps Lock, shift, control, option, command
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addKey(@"", UIKeyModifierAlphaShift);
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addKey(@"", UIKeyModifierShift);
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addKey(@"", UIKeyModifierControl);
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addKey(@"", UIKeyModifierAlternate);
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addKey(@"", UIKeyModifierCommand);
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keyboardCommands = commands.copy;
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}
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- (NSArray*)keyCommands
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{
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//keyCommands take control of buttons over UITextView, that's why need to return nil if text input field is active or we have an external keyboard attached AND a first responder
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if ([[KeyboardDelegate Instance] status] == Visible || ([[KeyboardDelegate Instance] hasExternalKeyboard] && [self hasFirstResponderInHeirachy: UnityGetGLView()]))
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return nil;
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if (keyboardCommands == nil)
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{
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[self createKeyboard];
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}
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return keyboardCommands;
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}
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- (bool)hasFirstResponderInHeirachy:(UIView*)view
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{
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if (view.isFirstResponder)
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return true;
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for (UIView* subview in view.subviews)
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{
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if ([self hasFirstResponderInHeirachy: subview])
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return true;
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}
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return false;
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}
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- (bool)isValidCodeForButton:(int)code
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{
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return (code > 0 && code < 128);
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}
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- (void)handleCommand:(UIKeyCommand *)command
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{
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NSString* input = command.input;
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UIKeyModifierFlags modifierFlags = command.modifierFlags;
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char inputChar = ([input length] > 0) ? [input characterAtIndex: 0] : 0;
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int code = (int)inputChar; // ASCII code
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UnitySendKeyboardCommand(command);
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if (![self isValidCodeForButton: code])
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{
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code = 0;
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}
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if ((modifierFlags & UIKeyModifierAlphaShift) != 0)
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code = UnityStringToKey("caps lock");
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if ((modifierFlags & UIKeyModifierShift) != 0)
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code = UnityStringToKey("left shift");
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if ((modifierFlags & UIKeyModifierControl) != 0)
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code = UnityStringToKey("left ctrl");
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if ((modifierFlags & UIKeyModifierAlternate) != 0)
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code = UnityStringToKey("left alt");
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if ((modifierFlags & UIKeyModifierCommand) != 0)
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code = UnityStringToKey("left cmd");
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if ((modifierFlags & UIKeyModifierNumericPad) != 0)
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{
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switch (inputChar)
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{
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case '0':
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code = UnityStringToKey("[0]");
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break;
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case '1':
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code = UnityStringToKey("[1]");
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break;
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case '2':
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code = UnityStringToKey("[2]");
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break;
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case '3':
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code = UnityStringToKey("[3]");
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break;
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case '4':
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code = UnityStringToKey("[4]");
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break;
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case '5':
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code = UnityStringToKey("[5]");
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break;
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case '6':
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code = UnityStringToKey("[6]");
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break;
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case '7':
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code = UnityStringToKey("[7]");
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break;
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case '8':
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code = UnityStringToKey("[8]");
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break;
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case '9':
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code = UnityStringToKey("[9]");
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break;
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case '-':
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code = UnityStringToKey("[-]");
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break;
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case '=':
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code = UnityStringToKey("equals");
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break;
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case '*':
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code = UnityStringToKey("[*]");
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break;
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case '+':
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code = UnityStringToKey("[+]");
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break;
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case '/':
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code = UnityStringToKey("[/]");
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break;
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case '.':
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code = UnityStringToKey("[.]");
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break;
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case '\r':
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code = UnityStringToKey("enter");
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break;
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default:
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break;
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}
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}
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if (input == UIKeyInputUpArrow)
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code = UnityStringToKey("up");
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else if (input == UIKeyInputDownArrow)
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code = UnityStringToKey("down");
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else if (input == UIKeyInputRightArrow)
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code = UnityStringToKey("right");
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else if (input == UIKeyInputLeftArrow)
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code = UnityStringToKey("left");
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else if (input == UIKeyInputEscape)
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code = UnityStringToKey("escape");
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else if ([input isEqualToString: @"UIKeyInputPageUp"])
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code = UnityStringToKey("page up");
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else if ([input isEqualToString: @"UIKeyInputPageDown"])
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code = UnityStringToKey("page down");
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KeyMap::iterator item = GetKeyMap().find(code);
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if (item == GetKeyMap().end())
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{
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// New key is down, register it and its time
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UnitySetKeyboardKeyState(code, true);
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GetKeyMap()[code] = GetTimeInSeconds();
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}
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else
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{
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// Still holding the key, update its time
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item->second = GetTimeInSeconds();
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}
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}
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- (void)processKeyboard
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{
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KeyMap& map = GetKeyMap();
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if (map.size() == 0)
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return;
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std::vector<int> keysToUnpress;
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double nowTime = GetTimeInSeconds();
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for (KeyMap::iterator item = map.begin();
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item != map.end();
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item++)
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{
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// Key has expired, register it for key up event
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if (nowTime - item->second > kKeyTimeoutInSeconds)
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keysToUnpress.push_back(item->first);
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}
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for (std::vector<int>::iterator item = keysToUnpress.begin();
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item != keysToUnpress.end();
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item++)
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{
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map.erase(*item);
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UnitySetKeyboardKeyState(*item, false);
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}
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}
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@end
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