Module refactoring

submodules/RMIntro/Sources/platform/ios/RMGeometry.h

@@ -0,0 +1,181 @@
+//
+//  RMGeometry.h
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 11/19/10.
+//
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+//const float extern Pi=3.14;
+//const float extern Pi2=6.28;
+
+
+
+
+
+
+
+static inline CGFloat DtoR(CGFloat a)
+{
+    return (CGFloat)(a*M_PI/180.0);
+}
+
+
+static inline CGFloat rnd(CGFloat a, CGFloat b)
+{
+    //return rand()%10000/10000.0*(b-a)+a;
+    return (CGFloat)(arc4random()%10000/10000.0*(b-a)+a);
+}
+
+static inline NSInteger intRnd(NSInteger a, NSInteger b)
+{
+    //return rand()%(b-a+1)+a;
+    return arc4random()%(b-a+1)+a;
+}
+
+static inline NSInteger signRnd()
+{
+    return intRnd(0, 1)*2-1;
+}
+
+static inline NSInteger sign(CGFloat a)
+{
+    return a >= 0 ? 1 : -1;
+}
+
+
+static inline CGPoint CGRectCenter(CGRect rect) {
+    return CGPointMake(CGRectGetMidX(rect), CGRectGetMidY(rect));
+}
+
+static inline CGRect CGRectCentralize(CGRect rect, CGPoint center) {
+    CGPoint oldCenter = CGRectCenter(rect);
+    CGPoint offset = CGPointMake(center.x - oldCenter.x, center.y - oldCenter.y); 
+    
+    return CGRectOffset(rect, offset.x, offset.y);
+}
+
+static inline CGRect CGRectRoundComponents(CGRect rect) {
+    return CGRectMake((NSInteger) (rect.origin.x + 0.5), (NSInteger) (rect.origin.y + 0.5), (NSInteger) (rect.size.width + 0.5), (NSInteger) (rect.size.height + 0.5));
+}
+
+static inline CGRect CGRectScaledToWidth (CGRect rect, CGFloat width) {    
+    const CGFloat ratio = width / rect.size.width;
+    return CGRectMake(rect.origin.x, rect.origin.y, width, rect.size.height * ratio);
+}
+
+static inline CGRect CGRectScaledToHeight(CGRect rect, CGFloat height) {
+    const CGFloat ratio = height / rect.size.height;
+    return CGRectMake(rect.origin.x, rect.origin.y, rect.size.width * ratio, height);
+}
+
+static inline CGRect CGRectScaledToWidthI (CGRect rect, CGFloat width) {
+    const CGFloat ratio = width / rect.size.width;
+    return CGRectMake((NSInteger) rect.origin.x, (NSInteger) rect.origin.y, (NSInteger) width, (NSInteger) (rect.size.height * ratio));
+}
+
+static inline CGRect CGRectScaledToHeightI(CGRect rect, CGFloat height) {
+    const CGFloat ratio = height / rect.size.height;
+    return CGRectMake((NSInteger) rect.origin.x, (NSInteger) rect.origin.y, (NSInteger) (rect.size.width * ratio), (NSInteger) height);
+}
+
+static inline CGRect CGRectScaledToFitRect(CGRect innerRect, CGRect boundingRect, BOOL centralize) {
+    const CGFloat innerRectWHRatio = innerRect.size.width / innerRect.size.height;
+    const CGFloat boundingRectWHRatio = boundingRect.size.width / boundingRect.size.height;
+    
+    CGRect result;
+    if (innerRectWHRatio >= boundingRectWHRatio) {
+        result = CGRectScaledToWidth(innerRect, boundingRect.size.width);
+    } else {
+        result = CGRectScaledToHeight(innerRect, boundingRect.size.height);
+    }
+    
+    if (centralize) {
+        result = CGRectCentralize(result, CGRectCenter(boundingRect));
+    }
+    
+    result = CGRectRoundComponents(result);
+    
+    return result;
+}
+
+static inline CGRect CGRectScaledToFitRectSmall(CGRect innerRect, CGRect boundingRect, BOOL centralize) {
+    const CGFloat innerRectWHRatio = innerRect.size.width / innerRect.size.height;
+    const CGFloat boundingRectWHRatio = boundingRect.size.width / boundingRect.size.height;
+    
+    CGRect result;
+    
+    if (innerRect.size.width<boundingRect.size.width && innerRect.size.height<boundingRect.size.height) {
+        result=CGRectCentralize(innerRect, CGRectCenter(boundingRect));
+    }
+    else
+    {
+        if (innerRectWHRatio >= boundingRectWHRatio) {
+            result = CGRectScaledToWidth(innerRect, boundingRect.size.width);
+        } else {
+            result = CGRectScaledToHeight(innerRect, boundingRect.size.height);
+        }
+        
+        if (centralize) {
+            result = CGRectCentralize(result, CGRectCenter(boundingRect));
+        }
+        
+        
+    
+    }
+
+    result = CGRectRoundComponents(result);
+    
+    return result;
+}
+
+
+
+static inline CGRect CGRectScaledToFitRectI(CGRect innerRect, CGRect boundingRect, BOOL centralize) {
+    return CGRectRoundComponents(CGRectScaledToFitRect(innerRect, boundingRect, centralize));
+}
+
+static inline CGRect  CGRectMakeOrigAndSize(CGPoint orig, CGSize size) {
+    return CGRectMake(orig.x, orig.y, size.width, size.height);
+}
+
+static inline CGRect  CGRectChangedWidth(CGRect rect, CGFloat width) {
+    return CGRectMake(rect.origin.x, rect.origin.y, width, rect.size.height);
+}
+
+static inline CGRect  CGRectChangedHeight(CGRect rect, CGFloat height) {
+    return CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, height);
+}
+
+static inline CGRect  CGRectChangedSize(CGRect rect, CGSize size) {
+    return CGRectMake(rect.origin.x, rect.origin.y, size.width, size.height);
+}
+
+static inline CGRect  CGRectChangedOrigin(CGRect rect, CGPoint origin) {
+    return CGRectMake(origin.x, origin.y, rect.size.width, rect.size.height);
+}
+
+static inline CGRect  CGRectChangedOriginX(CGRect rect, CGFloat originX) {
+    return CGRectMake(originX, rect.origin.y, rect.size.width, rect.size.height);
+}
+
+static inline CGRect  CGRectChangedOriginY(CGRect rect, CGFloat originY) {
+    return CGRectMake(rect.origin.x, originY, rect.size.width, rect.size.height);
+}
+
+static inline CGRect  CGRectChangedCenterY(CGRect rect, CGFloat centerY) {
+    return CGRectMake(rect.origin.x, centerY - rect.size.height / 2.0f, rect.size.width, rect.size.height);
+}
+
+static inline CGRect  CGRectChangedCenterX(CGRect rect, CGFloat centerX) {
+    return CGRectMake(centerX - rect.size.width / 2.0f, rect.origin.y, rect.size.width, rect.size.height);
+}
+
+
+static inline CGRect  CGRectWithIndent(CGRect rect, NSInteger indent) {
+    return CGRectMake(rect.origin.x-indent, rect.origin.y-indent, rect.size.width+indent*2,rect.size.height+indent*2);
+}
+
+#define VK_ROUND_RECT(rect) rect = CGRectRoundComponents(rect)

submodules/RMIntro/Sources/platform/ios/RMGeometry.m

@@ -0,0 +1,9 @@
+//
+//  RMGeometry.m
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 11/19/10.
+//
+
+#import "RMGeometry.h"
+

submodules/RMIntro/Sources/platform/ios/RMIntroPageView.h

@@ -0,0 +1,19 @@
+//
+//  RMIntroPageView.h
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 05.12.13.
+//  Copyright (c) 2013 Ilya Rimchikov. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface RMIntroPageView : UIView
+{
+    NSString *_headline;
+    NSMutableAttributedString *_description;
+}
+
+- (id)initWithFrame:(CGRect)frame headline:(NSString*)headline description:(NSString*)description color:(UIColor *)color;
+
+@end

submodules/RMIntro/Sources/platform/ios/RMIntroPageView.m

@@ -0,0 +1,103 @@
+//
+//  RMIntroPageView.m
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 05.12.13.
+//  Copyright (c) 2013 Ilya Rimchikov. All rights reserved.
+//
+
+#import "RMIntroPageView.h"
+
+@implementation RMIntroPageView
+
+#define IPAD ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad)
+
+- (id)initWithFrame:(CGRect)frame headline:(NSString*)headline description:(NSString*)description color:(UIColor *)color
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        // Initialization code
+        
+        
+        //self.backgroundColor=[UIColor redColor];
+        self.opaque=YES;
+        _headline=headline;
+        
+        UILabel *headlineLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, frame.size.width, 64+8)];
+        headlineLabel.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:IPAD ? 96/2 : 36];
+        headlineLabel.text = _headline;
+        headlineLabel.textColor = color;
+        headlineLabel.textAlignment = NSTextAlignmentCenter;
+        headlineLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth;
+        
+      
+        NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
+        style.lineSpacing = IPAD ? 6 : 5;
+        style.lineBreakMode = NSLineBreakByWordWrapping;
+        style.alignment = NSTextAlignmentCenter;
+        
+        
+        
+        
+        
+        NSMutableArray *boldRanges = [[NSMutableArray alloc] init];
+        
+        NSMutableString *cleanText = [[NSMutableString alloc] initWithString:description];
+        while (true)
+        {
+            NSRange startRange = [cleanText rangeOfString:@"**"];
+            if (startRange.location == NSNotFound)
+                break;
+            
+            [cleanText deleteCharactersInRange:startRange];
+            
+            NSRange endRange = [cleanText rangeOfString:@"**"];
+            if (endRange.location == NSNotFound)
+                break;
+            
+            [cleanText deleteCharactersInRange:endRange];
+            
+            [boldRanges addObject:[NSValue valueWithRange:NSMakeRange(startRange.location, endRange.location - startRange.location)]];
+        }
+        
+        
+        
+        _description = [[NSMutableAttributedString alloc]initWithString:cleanText];
+        NSDictionary *boldAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
+                                        [UIFont fontWithName:@"HelveticaNeue-Medium" size:IPAD ? 44/2 : 17], NSFontAttributeName, nil];
+        for (NSValue *nRange in boldRanges)
+        {
+            [_description addAttributes:boldAttributes range:[nRange rangeValue]];
+        }
+        
+        [_description addAttribute:NSParagraphStyleAttributeName
+                             value:style
+                             range:NSMakeRange(0, _description.length)];
+        [_description addAttribute:NSForegroundColorAttributeName value:color range:NSMakeRange(0, _description.length)];
+        
+        UILabel *descriptionLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 25 + (IPAD ? 22 : 0), frame.size.width, 120+8+5)];
+        descriptionLabel.font = [UIFont fontWithName:@"HelveticaNeue" size:IPAD ? 44/2 : 17];
+        descriptionLabel.attributedText = _description;
+        descriptionLabel.numberOfLines=0;
+        descriptionLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth;
+        [self addSubview:descriptionLabel];
+        
+        
+        [self addSubview:headlineLabel];
+        
+        
+    }
+    return self;
+}
+
+
+/*
+// Only override drawRect: if you perform custom drawing.
+// An empty implementation adversely affects performance during animation.
+- (void)drawRect:(CGRect)rect
+{
+    // Drawing code
+}
+*/
+
+@end

submodules/RMIntro/Sources/platform/ios/RMIntroViewController.h

@@ -0,0 +1,67 @@
+//
+//  RMIntroViewController.h
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 19/01/14.
+//
+//
+
+#import <UIKit/UIKit.h>
+#import <GLKit/GLKit.h>
+
+@class SSignal;
+
+@interface TGAvailableLocalization : NSObject <NSCoding>
+
+@property (nonatomic, strong, readonly) NSString *title;
+@property (nonatomic, strong, readonly) NSString *localizedTitle;
+@property (nonatomic, strong, readonly) NSString *code;
+
+- (instancetype)initWithTitle:(NSString *)title localizedTitle:(NSString *)localizedTitle code:(NSString *)code;
+
+@end
+
+@interface TGSuggestedLocalization : NSObject
+
+@property (nonatomic, strong, readonly) TGAvailableLocalization *info;
+@property (nonatomic, strong, readonly) NSString *continueWithLanguageString;
+@property (nonatomic, strong, readonly) NSString *chooseLanguageString;
+@property (nonatomic, strong, readonly) NSString *chooseLanguageOtherString;
+@property (nonatomic, strong, readonly) NSString *englishLanguageNameString;
+
+- (instancetype)initWithInfo:(TGAvailableLocalization *)info continueWithLanguageString:(NSString *)continueWithLanguageString chooseLanguageString:(NSString *)chooseLanguageString chooseLanguageOtherString:(NSString *)chooseLanguageOtherString englishLanguageNameString:(NSString *)englishLanguageNameString;
+
+@end
+
+@interface RMIntroViewController : UIViewController<UIScrollViewDelegate, GLKViewDelegate>
+{
+    EAGLContext *context;
+    
+    GLKView *_glkView;
+    
+    NSArray *_headlines;
+    NSArray *_descriptions;
+    
+    NSMutableArray *_pageViews;
+    
+    NSInteger _currentPage;
+    
+    UIScrollView *_pageScrollView;
+    UIPageControl *_pageControl;
+    
+    NSTimer *_updateAndRenderTimer;
+    
+    BOOL _isOpenGLLoaded;
+}
+
+- (instancetype)initWithBackgroundColor:(UIColor *)backgroundColor primaryColor:(UIColor *)primaryColor buttonColor:(UIColor *)buttonColor accentColor:(UIColor *)accentColor regularDotColor:(UIColor *)regularDotColor highlightedDotColor:(UIColor *)highlightedDotColor suggestedLocalizationSignal:(SSignal *)suggestedLocalizationSignal;
+
+@property (nonatomic, copy) void (^startMessaging)(void);
+@property (nonatomic, copy) void (^startMessagingInAlternativeLanguage)(NSString *);
+
+@property (nonatomic) bool isEnabled;
+
+- (void)startTimer;
+- (void)stopTimer;
+
+@end

submodules/RMIntro/Sources/platform/ios/RMIntroViewController.m

@@ -0,0 +1,714 @@
+//
+//  RMIntroViewController.m
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 19/01/14.
+//
+//
+
+#import "RMGeometry.h"
+
+#import "RMIntroViewController.h"
+#import "RMIntroPageView.h"
+
+#include "animations.h"
+#include "objects.h"
+#include "texture_helper.h"
+
+#import <SSignalKit/SSignalKit.h>
+
+#import <LegacyComponents/LegacyComponents.h>
+
+typedef enum {
+    Inch35 = 0,
+    Inch4 = 1,
+    Inch47 = 2,
+    Inch55 = 3,
+    Inch65 = 4,
+    iPad = 5,
+    iPadPro = 6
+} DeviceScreen;
+
+static void TGDispatchOnMainThread(dispatch_block_t block) {
+    if ([NSThread isMainThread]) {
+        block();
+    } else {
+        dispatch_async(dispatch_get_main_queue(), block);
+    }
+}
+
+@interface UIScrollView (CurrentPage)
+- (int)currentPage;
+- (void)setPage:(NSInteger)page;
+- (int)currentPageMin;
+- (int)currentPageMax;
+
+@end
+
+@implementation UIScrollView (CurrentPage)
+
+- (int)currentPage
+{
+    CGFloat pageWidth = self.frame.size.width;
+    return (int)floor((self.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
+}
+
+- (int)currentPageMin
+{
+    CGFloat pageWidth = self.frame.size.width;
+    return (int)floor((self.contentOffset.x - pageWidth / 2 - pageWidth / 2) / pageWidth) + 1;
+}
+
+- (int)currentPageMax
+{
+    CGFloat pageWidth = self.frame.size.width;
+    return (int)floor((self.contentOffset.x - pageWidth / 2 + pageWidth / 2 ) / pageWidth) + 1;
+}
+
+- (void)setPage:(NSInteger)page
+{
+    self.contentOffset = CGPointMake(self.frame.size.width*page, 0);
+}
+@end
+
+
+@interface RMIntroViewController () <UIGestureRecognizerDelegate>
+{
+    id _didEnterBackgroundObserver;
+    id _willEnterBackgroundObserver;
+    
+    UIColor *_backgroundColor;
+    UIColor *_primaryColor;
+    UIColor *_buttonColor;
+    UIColor *_accentColor;
+    UIColor *_regularDotColor;
+    UIColor *_highlightedDotColor;
+    
+    UIButton *_startButton;
+    TGModernButton *_alternativeLanguageButton;
+    
+    SMetaDisposable *_localizationsDisposable;
+    TGSuggestedLocalization *_alternativeLocalizationInfo;
+    
+    SVariable *_alternativeLocalization;
+    NSDictionary<NSString *, NSString *> *_englishStrings;
+}
+@end
+
+
+@implementation RMIntroViewController
+
+- (instancetype)initWithBackgroundColor:(UIColor *)backgroundColor primaryColor:(UIColor *)primaryColor buttonColor:(UIColor *)buttonColor accentColor:(UIColor *)accentColor regularDotColor:(UIColor *)regularDotColor highlightedDotColor:(UIColor *)highlightedDotColor suggestedLocalizationSignal:(SSignal *)suggestedLocalizationSignal
+{
+    self = [super init];
+    if (self != nil)
+    {
+        _isEnabled = true;
+        
+        _backgroundColor = backgroundColor;
+        _primaryColor = primaryColor;
+        _buttonColor = buttonColor;
+        _accentColor = accentColor;
+        _regularDotColor = regularDotColor;
+        _highlightedDotColor = highlightedDotColor;
+        
+        self.automaticallyAdjustsScrollViewInsets = false;
+        
+        NSArray<NSString *> *stringKeys = @[
+            @"Tour.Title1",
+            @"Tour.Title2",
+            @"Tour.Title3",
+            @"Tour.Title4",
+            @"Tour.Title5",
+            @"Tour.Title6",
+            @"Tour.Text1",
+            @"Tour.Text2",
+            @"Tour.Text3",
+            @"Tour.Text4",
+            @"Tour.Text5",
+            @"Tour.Text6",
+            @"Tour.StartButton"
+        ];
+        
+        NSMutableDictionary *englishStrings = [[NSMutableDictionary alloc] init];
+        NSBundle *bundle = [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:@"en" ofType:@"lproj"]];
+        for (NSString *key in stringKeys) {
+            if (bundle != nil) {
+                NSString *value = [bundle localizedStringForKey:key value:key table:nil];
+                if (value != nil) {
+                    englishStrings[key] = value;
+                } else {
+                    englishStrings[key] = key;
+                }
+            } else {
+                englishStrings[key] = key;
+            }
+        }
+        _englishStrings = englishStrings;
+        
+        _headlines = @[ _englishStrings[@"Tour.Title1"], _englishStrings[@"Tour.Title2"],  _englishStrings[@"Tour.Title6"], _englishStrings[@"Tour.Title3"], _englishStrings[@"Tour.Title4"], _englishStrings[@"Tour.Title5"]];
+        _descriptions = @[_englishStrings[@"Tour.Text1"], _englishStrings[@"Tour.Text2"],  _englishStrings[@"Tour.Text6"], _englishStrings[@"Tour.Text3"], _englishStrings[@"Tour.Text4"], _englishStrings[@"Tour.Text5"]];
+        
+        __weak RMIntroViewController *weakSelf = self;
+        _didEnterBackgroundObserver = [[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationDidEnterBackgroundNotification object:nil queue:nil usingBlock:^(__unused NSNotification *notification)
+        {
+            __strong RMIntroViewController *strongSelf = weakSelf;
+            [strongSelf stopTimer];
+        }];
+        
+        _willEnterBackgroundObserver = [[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationWillEnterForegroundNotification object:nil queue:nil usingBlock:^(__unused NSNotification *notification)
+        {
+            __strong RMIntroViewController *strongSelf = weakSelf;
+            [strongSelf loadGL];
+            [strongSelf startTimer];
+        }];
+        
+        _alternativeLanguageButton = [[TGModernButton alloc] init];
+        _alternativeLanguageButton.modernHighlight = true;
+        [_alternativeLanguageButton setTitleColor:accentColor];
+        
+        _alternativeLanguageButton.titleLabel.font = [UIFont systemFontOfSize:18.0];
+        _alternativeLanguageButton.hidden = true;
+        [_alternativeLanguageButton addTarget:self action:@selector(alternativeLanguageButtonPressed) forControlEvents:UIControlEventTouchUpInside];
+        
+        _alternativeLocalization = [[SVariable alloc] init];
+        
+        _localizationsDisposable = [[suggestedLocalizationSignal deliverOn:[SQueue mainQueue]] startWithNext:^(TGSuggestedLocalization *next) {
+            __strong RMIntroViewController *strongSelf = weakSelf;
+            if (strongSelf != nil && next != nil) {
+                if (strongSelf->_alternativeLocalizationInfo == nil) {
+                    strongSelf->_alternativeLocalizationInfo = next;
+                    
+                    [strongSelf->_alternativeLanguageButton setTitle:next.continueWithLanguageString forState:UIControlStateNormal];
+                    strongSelf->_alternativeLanguageButton.hidden = false;
+                    [strongSelf->_alternativeLanguageButton sizeToFit];
+                    
+                    if ([strongSelf isViewLoaded]) {
+                        strongSelf->_alternativeLanguageButton.alpha = 0.0;
+                        [UIView animateWithDuration:0.3 animations:^{
+                            strongSelf->_alternativeLanguageButton.alpha = strongSelf->_isEnabled ? 1.0 : 0.6;
+                            [strongSelf viewWillLayoutSubviews];
+                        }];
+                    }
+                }
+            }
+        }];
+    }
+    return self;
+}
+
+- (void)startTimer
+{
+    if (_updateAndRenderTimer == nil)
+    {
+        _updateAndRenderTimer = [NSTimer timerWithTimeInterval:1.0f / 60.0f target:self selector:@selector(updateAndRender) userInfo:nil repeats:true];
+        [[NSRunLoop mainRunLoop] addTimer:_updateAndRenderTimer forMode:NSRunLoopCommonModes];
+    }
+}
+
+- (void)stopTimer
+{
+    if (_updateAndRenderTimer != nil)
+    {
+        [_updateAndRenderTimer invalidate];
+        _updateAndRenderTimer = nil;
+    }
+}
+
+
+- (void)loadView
+{
+    [super loadView];
+}
+
+- (void)loadGL
+{
+    if (/*[[UIApplication sharedApplication] applicationState] != UIApplicationStateBackground*/true && !_isOpenGLLoaded)
+    {
+        context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+        if (!context)
+            NSLog(@"Failed to create ES context");
+        
+        bool isIpad = ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad);
+        
+        CGFloat size = 200;
+        if (isIpad)
+            size *= 1.2;
+        
+        int height = 50;
+        if (isIpad)
+            height += 138 / 2;
+        
+        _glkView = [[GLKView alloc] initWithFrame:CGRectMake(self.view.bounds.size.width / 2 - size / 2, height, size, size) context:context];
+        _glkView.backgroundColor = _backgroundColor;
+        _glkView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
+        _glkView.drawableDepthFormat = GLKViewDrawableDepthFormat24;
+        _glkView.drawableMultisample = GLKViewDrawableMultisample4X;
+        _glkView.enableSetNeedsDisplay = false;
+        _glkView.userInteractionEnabled = false;
+        _glkView.delegate = self;
+        
+        [self setupGL];
+        [self.view addSubview:_glkView];
+        
+        [self startTimer];
+        _isOpenGLLoaded = true;
+    }
+}
+
+- (void)freeGL
+{
+    if (!_isOpenGLLoaded)
+        return;
+
+    [self stopTimer];
+    
+    if ([EAGLContext currentContext] == _glkView.context)
+        [EAGLContext setCurrentContext:nil];
+
+    _glkView.context = nil;
+    context = nil;
+    [_glkView removeFromSuperview];
+    _glkView = nil;
+    _isOpenGLLoaded = false;
+}
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    
+    self.view.backgroundColor = _backgroundColor;
+    
+    [self loadGL];
+    
+    _pageScrollView = [[UIScrollView alloc]initWithFrame:self.view.bounds];
+    _pageScrollView.clipsToBounds = true;
+    _pageScrollView.opaque = true;
+    _pageScrollView.clearsContextBeforeDrawing = false;
+    [_pageScrollView setShowsHorizontalScrollIndicator:false];
+    [_pageScrollView setShowsVerticalScrollIndicator:false];
+    _pageScrollView.pagingEnabled = true;
+    _pageScrollView.contentSize = CGSizeMake(_headlines.count * self.view.bounds.size.width, self.view.bounds.size.height);
+    _pageScrollView.delegate = self;
+    [self.view addSubview:_pageScrollView];
+    
+    _pageViews = [NSMutableArray array];
+    
+    for (NSUInteger i = 0; i < _headlines.count; i++)
+    {
+        RMIntroPageView *p = [[RMIntroPageView alloc]initWithFrame:CGRectMake(i * self.view.bounds.size.width, 0, self.view.bounds.size.width, 0) headline:[_headlines objectAtIndex:i] description:[_descriptions objectAtIndex:i] color:_primaryColor];
+        p.opaque = true;
+        p.clearsContextBeforeDrawing = false;
+        [_pageViews addObject:p];
+        [_pageScrollView addSubview:p];
+    }
+    [_pageScrollView setPage:0];
+    
+    _startButton = [[UIButton alloc] init];
+    _startButton.adjustsImageWhenDisabled = false;
+    [_startButton setTitle:_englishStrings[@"Tour.StartButton"] forState:UIControlStateNormal];
+    [_startButton.titleLabel setFont:TGMediumSystemFontOfSize(20.0f)];
+    [_startButton setTitleColor:_backgroundColor forState:UIControlStateNormal];
+    static UIImage *buttonBackgroundImage = nil;
+    static UIImage *buttonHighlightedBackgroundImage = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        {
+            UIGraphicsBeginImageContextWithOptions(CGSizeMake(48.0, 48.0), false, 0.0f);
+            CGContextRef context = UIGraphicsGetCurrentContext();
+            CGContextSetFillColorWithColor(context, [_buttonColor CGColor]);
+            CGContextFillEllipseInRect(context, CGRectMake(0.0f, 0.0f, 48.0f, 48.0f));
+            buttonBackgroundImage = [UIGraphicsGetImageFromCurrentImageContext() stretchableImageWithLeftCapWidth:24 topCapHeight:24];
+            UIGraphicsEndImageContext();
+        }
+        {
+            UIGraphicsBeginImageContextWithOptions(CGSizeMake(48.0, 48.0), false, 0.0f);
+            CGContextRef context = UIGraphicsGetCurrentContext();
+            CGFloat hue = 0.0f;
+            CGFloat sat = 0.0f;
+            CGFloat bri = 0.0f;
+            [_buttonColor getHue:&hue saturation:&sat brightness:&bri alpha:nil];
+            UIColor *color = [[UIColor alloc] initWithHue:hue saturation:sat brightness:bri * 0.7 alpha:1.0];
+            CGContextSetFillColorWithColor(context, [color CGColor]);
+            CGContextFillEllipseInRect(context, CGRectMake(0.0f, 0.0f, 48.0f, 48.0f));
+            buttonHighlightedBackgroundImage = [UIGraphicsGetImageFromCurrentImageContext() stretchableImageWithLeftCapWidth:24 topCapHeight:24];
+            UIGraphicsEndImageContext();
+        }
+    });
+    [_startButton setContentEdgeInsets:UIEdgeInsetsMake(0.0f, 20.0f, 0.0f, 20.0f)];
+    [_startButton setBackgroundImage:buttonBackgroundImage forState:UIControlStateNormal];
+    [_startButton setBackgroundImage:buttonHighlightedBackgroundImage forState:UIControlStateHighlighted];
+    [self.view addSubview:_startButton];
+    [self.view addSubview:_alternativeLanguageButton];
+    
+    _pageControl = [[UIPageControl alloc] init];
+    _pageControl.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin;
+    _pageControl.userInteractionEnabled = false;
+    [_pageControl setNumberOfPages:6];
+    _pageControl.pageIndicatorTintColor = _regularDotColor;
+    _pageControl.currentPageIndicatorTintColor = _highlightedDotColor;
+    [self.view addSubview:_pageControl];
+}
+
+- (BOOL)shouldAutorotate
+{
+    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad)
+        return true;
+    
+    return false;
+}
+
+- (UIInterfaceOrientationMask)supportedInterfaceOrientations
+{
+    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad)
+        return UIInterfaceOrientationMaskAll;
+    
+    return UIInterfaceOrientationMaskPortrait;
+}
+
+- (DeviceScreen)deviceScreen
+{
+    CGSize viewSize = self.view.frame.size;
+    int max = (int)MAX(viewSize.width, viewSize.height);
+    
+    DeviceScreen deviceScreen = Inch55;
+    
+    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad)
+    {
+        switch (max)
+        {
+            case 1366:
+                deviceScreen = iPadPro;
+                break;
+                
+            default:
+                deviceScreen = iPad;
+                break;
+        }
+    }
+    else
+    {
+        switch (max)
+        {
+            case 480:
+                deviceScreen = Inch35;
+                break;
+            case 568:
+                deviceScreen = Inch4;
+                break;
+            case 667:
+                deviceScreen = Inch47;
+                break;
+            case 896:
+                deviceScreen = Inch65;
+                break;
+            default:
+                deviceScreen = Inch55;
+                break;
+        }
+    }
+    
+    return deviceScreen;
+}
+
+- (void)viewWillLayoutSubviews
+{
+    UIInterfaceOrientation isVertical = (self.view.bounds.size.height / self.view.bounds.size.width > 1.0f);
+    
+    CGFloat statusBarHeight = 0;
+    
+    CGFloat pageControlY = 0;
+    CGFloat glViewY = 0;
+    CGFloat startButtonY = 0;
+    CGFloat pageY = 0;
+    
+    CGFloat languageButtonSpread = 60.0f;
+    CGFloat languageButtonOffset = 26.0f;
+    
+    DeviceScreen deviceScreen = [self deviceScreen];
+    switch (deviceScreen)
+    {
+        case iPad:
+            glViewY = isVertical ? 121 + 90 : 121;
+            startButtonY = 120;
+            pageY = isVertical ? 485 : 335;
+            pageControlY = pageY + 200.0f;
+            break;
+            
+        case iPadPro:
+            glViewY = isVertical ? 221 + 110 : 221;
+            startButtonY = 120;
+            pageY = isVertical ? 605 : 435;
+            pageControlY = pageY + 200.0f;
+            break;
+            
+        case Inch35:
+            pageControlY = 162 / 2;
+            glViewY = 62 - 20;
+            startButtonY = 75;
+            pageY = 215;
+            pageControlY = pageY + 160.0f;
+            if (!_alternativeLanguageButton.isHidden) {
+                glViewY -= 40.0f;
+                pageY -= 40.0f;
+                pageControlY -= 40.0f;
+                startButtonY -= 30.0f;
+            }
+            languageButtonSpread = 65.0f;
+            languageButtonOffset = 15.0f;
+            break;
+            
+        case Inch4:
+            glViewY = 62;
+            startButtonY = 75;
+            pageY = 245;
+            pageControlY = pageY + 160.0f;
+            languageButtonSpread = 50.0f;
+            languageButtonOffset = 20.0f;
+            break;
+            
+        case Inch47:
+            pageControlY = 162 / 2 + 10;
+            glViewY = 62 + 25;
+            startButtonY = 75 + 5;
+            pageY = 245 + 50;
+            pageControlY = pageY + 160.0f;
+            break;
+            
+        case Inch55:
+            glViewY = 62 + 45;
+            startButtonY = 75 + 20;
+            pageY = 245 + 85;
+            pageControlY = pageY + 160.0f;
+            break;
+            
+        case Inch65:
+            glViewY = 62 + 85;
+            startButtonY = 75 + 30;
+            pageY = 245 + 125;
+            pageControlY = pageY + 160.0f;
+            break;
+            
+        default:
+            break;
+    }
+    
+    if (!_alternativeLanguageButton.isHidden) {
+        startButtonY += languageButtonSpread;
+    }
+    
+    _pageControl.frame = CGRectMake(0, pageControlY, self.view.bounds.size.width, 7);
+    _glkView.frame = CGRectChangedOriginY(_glkView.frame, glViewY - statusBarHeight);
+    
+    [_startButton sizeToFit];
+    _startButton.frame = CGRectMake(floor((self.view.bounds.size.width - _startButton.frame.size.width) / 2.0f), self.view.bounds.size.height - startButtonY - statusBarHeight, _startButton.frame.size.width, 48.0f);
+    [_startButton addTarget:self action:@selector(startButtonPress) forControlEvents:UIControlEventTouchUpInside];
+    
+    _alternativeLanguageButton.frame = CGRectMake(floor((self.view.bounds.size.width - _alternativeLanguageButton.frame.size.width) / 2.0f), CGRectGetMaxY(_startButton.frame) + languageButtonOffset, _alternativeLanguageButton.frame.size.width, _alternativeLanguageButton.frame.size.height);
+    
+    _pageScrollView.frame=CGRectMake(0, 20, self.view.bounds.size.width, self.view.bounds.size.height - 20);
+    _pageScrollView.contentSize=CGSizeMake(_headlines.count * self.view.bounds.size.width, 150);
+    _pageScrollView.contentOffset = CGPointMake(_currentPage * self.view.bounds.size.width, 0);
+    
+    [_pageViews enumerateObjectsUsingBlock:^(UIView *pageView, NSUInteger index, __unused BOOL *stop)
+     {
+         pageView.frame = CGRectMake(index * self.view.bounds.size.width, (pageY - statusBarHeight), self.view.bounds.size.width, 150);
+     }];
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+    
+    [self loadGL];
+}
+
+- (void)viewDidDisappear:(BOOL)animated
+{
+    [super viewDidDisappear:animated];
+    
+    [self freeGL];
+}
+
+- (void)startButtonPress
+{
+    if (_startMessaging) {
+        _startMessaging();
+    }
+}
+
+- (void)updateAndRender
+{
+    [_glkView display];
+}
+
+- (void)dealloc
+{
+    [[NSNotificationCenter defaultCenter] removeObserver:_didEnterBackgroundObserver];
+    [[NSNotificationCenter defaultCenter] removeObserver:_willEnterBackgroundObserver];
+    
+    [self freeGL];
+}
+
+- (void)setupGL
+{
+    [EAGLContext setCurrentContext:_glkView.context];
+    
+    UIColor *color = _backgroundColor;
+    
+    CGFloat red = 0.0f;
+    CGFloat green = 0.0f;
+    CGFloat blue = 0.0f;
+    if ([color getRed:&red green:&green blue:&blue alpha:NULL]) {
+    } else if ([color getWhite:&red alpha:NULL]) {
+        green = red;
+        blue = red;
+    }
+    set_intro_background_color(red, green, blue);
+    
+    set_telegram_textures(setup_texture(@"telegram_sphere.png", color), setup_texture(@"telegram_plane1.png", color));
+    
+    set_ic_textures(setup_texture(@"ic_bubble_dot.png", color), setup_texture(@"ic_bubble.png", color), setup_texture(@"ic_cam_lens.png", color), setup_texture(@"ic_cam.png", color), setup_texture(@"ic_pencil.png", color), setup_texture(@"ic_pin.png", color), setup_texture(@"ic_smile_eye.png", color), setup_texture(@"ic_smile.png", color), setup_texture(@"ic_videocam.png", color));
+    
+    set_fast_textures(setup_texture(@"fast_body.png", color), setup_texture(@"fast_spiral.png", color), setup_texture(@"fast_arrow.png", color), setup_texture(@"fast_arrow_shadow.png", color));
+    
+    set_free_textures(setup_texture(@"knot_up1.png", color), setup_texture(@"knot_down.png", color));
+    
+    set_powerful_textures(setup_texture(@"powerful_mask.png", color), setup_texture(@"powerful_star.png", color), setup_texture(@"powerful_infinity.png", color), setup_texture(@"powerful_infinity_white.png", color));
+    
+    set_private_textures(setup_texture(@"private_door.png", color), setup_texture(@"private_screw.png", color));
+    
+    on_surface_created();
+    on_surface_changed(200, 200, 1, 0,0,0,0,0);
+}
+
+#pragma mark - GLKView delegate methods
+
+- (void)glkView:(GLKView *)__unused view drawInRect:(CGRect)__unused rect
+{
+    double time = CFAbsoluteTimeGetCurrent();
+    
+    set_page((int)_currentPage);
+    set_date(time);
+    
+    on_draw_frame();
+}
+
+static CGFloat x;
+static bool justEndDragging;
+
+- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)__unused decelerate
+{
+    x = scrollView.contentOffset.x;
+    justEndDragging = true;
+}
+
+NSInteger _current_page_end;
+
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView
+{
+    CGFloat offset = (scrollView.contentOffset.x - _currentPage * scrollView.frame.size.width) / self.view.frame.size.width;
+    
+    set_scroll_offset((float)offset);
+    
+    if (justEndDragging)
+    {
+        justEndDragging = false;
+        
+        CGFloat page = scrollView.contentOffset.x / scrollView.frame.size.width;
+        CGFloat sign = scrollView.contentOffset.x - x;
+        
+        if (sign > 0)
+        {
+            if (page > _currentPage)
+                _currentPage++;
+        }
+        
+        if (sign < 0)
+        {
+            if (page < _currentPage)
+                _currentPage--;
+        }
+        
+        _currentPage = MAX(0, MIN(5, _currentPage));
+        _current_page_end = _currentPage;
+    }
+    else
+    {
+        if (_pageScrollView.contentOffset.x > _current_page_end*_pageScrollView.frame.size.width)
+        {
+            if (_pageScrollView.currentPageMin > _current_page_end) {
+                _currentPage = [_pageScrollView currentPage];
+                _current_page_end = _currentPage;
+            }
+        }
+        else
+        {
+            if (_pageScrollView.currentPageMax < _current_page_end)
+            {
+                _currentPage = [_pageScrollView currentPage];
+                _current_page_end = _currentPage;
+            }
+        }
+    }
+    
+    [_pageControl setCurrentPage:_currentPage];
+}
+
+- (void)alternativeLanguageButtonPressed {
+    if (_startMessagingInAlternativeLanguage && _alternativeLocalizationInfo.info.code.length != 0) {
+        _startMessagingInAlternativeLanguage(_alternativeLocalizationInfo.info.code);
+    }
+}
+
+- (void)setIsEnabled:(bool)isEnabled {
+    if (_isEnabled != isEnabled) {
+        _isEnabled = isEnabled;
+        _startButton.alpha = _isEnabled ? 1.0 : 0.6;
+        _alternativeLanguageButton.alpha = _isEnabled ? 1.0 : 0.6;
+    }
+}
+
+@end
+
+@implementation TGAvailableLocalization
+
+- (instancetype)initWithTitle:(NSString *)title localizedTitle:(NSString *)localizedTitle code:(NSString *)code {
+    self = [super init];
+    if (self != nil) {
+        _title = title;
+        _localizedTitle = localizedTitle;
+        _code = code;
+    }
+    return self;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)aDecoder
+{
+    return [self initWithTitle:[aDecoder decodeObjectForKey:@"title"] localizedTitle:[aDecoder decodeObjectForKey:@"localizedTitle"] code:[aDecoder decodeObjectForKey:@"code"]];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder
+{
+    [aCoder encodeObject:_title forKey:@"title"];
+    [aCoder encodeObject:_localizedTitle forKey:@"localizedTitle"];
+    [aCoder encodeObject:_code forKey:@"code"];
+}
+
+@end
+
+@implementation TGSuggestedLocalization
+
+- (instancetype)initWithInfo:(TGAvailableLocalization *)info continueWithLanguageString:(NSString *)continueWithLanguageString chooseLanguageString:(NSString *)chooseLanguageString chooseLanguageOtherString:(NSString *)chooseLanguageOtherString englishLanguageNameString:(NSString *)englishLanguageNameString {
+    self = [super init];
+    if (self != nil) {
+        _info = info;
+        _continueWithLanguageString = continueWithLanguageString;
+        _chooseLanguageString = chooseLanguageString;
+        _chooseLanguageOtherString = chooseLanguageOtherString;
+        _englishLanguageNameString = englishLanguageNameString;
+    }
+    return self;
+}
+
+@end

submodules/RMIntro/Sources/platform/ios/platform_gl.h

@@ -0,0 +1,2 @@
+#include <OpenGLES/ES2/gl.h>
+#include <OpenGLES/ES2/glext.h>

submodules/RMIntro/Sources/platform/ios/texture_helper.h

@@ -0,0 +1,14 @@
+//
+//  texture_helper.h
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 11/03/14.
+//  Copyright (c) 2014 IntroOpenGL. All rights reserved.
+//
+
+#include "platform_gl.h"
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+GLuint setup_texture(NSString *fileName, UIColor *color);

submodules/RMIntro/Sources/platform/ios/texture_helper.m

@@ -0,0 +1,61 @@
+//
+//  texture_helper.m
+//  IntroOpenGL
+//
+//  Created by Ilya Rimchikov on 11/03/14.
+//  Copyright (c) 2014 Learn OpenGL ES. All rights reserved.
+//
+
+#include "texture_helper.h"
+
+#import <UIKit/UIKit.h>
+
+GLuint setup_texture(NSString *fileName, UIColor *color)
+{
+    CGImageRef spriteImage = [[UIImage imageNamed:fileName] CGImage];
+    if (!spriteImage) {
+        NSLog(@"Failed to load image %@", fileName);
+        return -1;
+    }
+
+    
+    // 2
+    size_t width = CGImageGetWidth(spriteImage);
+    size_t height = CGImageGetHeight(spriteImage);
+    
+    GLubyte * spriteData = (GLubyte *) calloc(width*height*4, sizeof(GLubyte));
+    
+    CGContextRef spriteContext = CGBitmapContextCreate(spriteData, width, height, 8, width*4, CGImageGetColorSpace(spriteImage), (CGBitmapInfo)kCGImageAlphaPremultipliedLast);
+    
+    // 3
+    if ([fileName isEqualToString:@"telegram_sphere.png"]) {
+        CGContextSetFillColorWithColor(spriteContext, color.CGColor);
+        CGContextFillRect(spriteContext, CGRectMake(0, 0, width, height));
+    }
+    CGContextDrawImage(spriteContext, CGRectMake(0, 0, width, height), spriteImage);
+    
+    CGContextRelease(spriteContext);
+    
+    // 4
+    GLuint texName;
+    
+    glGenTextures(1, &texName);
+    glBindTexture(GL_TEXTURE_2D, texName);
+    
+    
+    // use linear filetring
+    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+    // clamp to edge
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    
+    
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, spriteData);
+    
+    free(spriteData);
+    return texName;
+}
+
+
+