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67 lines
2.6 KiB
67 lines
2.6 KiB
//
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// FLEXWindow.m
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// Flipboard
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//
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// Created by Ryan Olson on 4/13/14.
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// Copyright (c) 2014 Flipboard. All rights reserved.
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//
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#import "FLEXWindow.h"
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#import <objc/runtime.h>
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@implementation FLEXWindow
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- (id)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self) {
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self.backgroundColor = UIColor.clearColor;
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// Some apps have windows at UIWindowLevelStatusBar + n.
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// If we make the window level too high, we block out UIAlertViews.
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// There's a balance between staying above the app's windows and staying below alerts.
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// UIWindowLevelStatusBar + 100 seems to hit that balance.
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self.windowLevel = UIWindowLevelStatusBar + 100.0;
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}
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return self;
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}
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- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
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{
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BOOL pointInside = NO;
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if ([self.eventDelegate shouldHandleTouchAtPoint:point]) {
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pointInside = [super pointInside:point withEvent:event];
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}
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return pointInside;
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}
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- (BOOL)shouldAffectStatusBarAppearance
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{
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return [self isKeyWindow];
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}
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- (BOOL)canBecomeKeyWindow
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{
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return [self.eventDelegate canBecomeKeyWindow];
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}
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+ (void)initialize
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{
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// This adds a method (superclass override) at runtime which gives us the status bar behavior we want.
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// The FLEX window is intended to be an overlay that generally doesn't affect the app underneath.
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// Most of the time, we want the app's main window(s) to be in control of status bar behavior.
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// Done at runtime with an obfuscated selector because it is private API. But you shouldn't ship this to the App Store anyways...
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NSString *canAffectSelectorString = [@[@"_can", @"Affect", @"Status", @"Bar", @"Appearance"] componentsJoinedByString:@""];
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SEL canAffectSelector = NSSelectorFromString(canAffectSelectorString);
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Method shouldAffectMethod = class_getInstanceMethod(self, @selector(shouldAffectStatusBarAppearance));
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IMP canAffectImplementation = method_getImplementation(shouldAffectMethod);
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class_addMethod(self, canAffectSelector, canAffectImplementation, method_getTypeEncoding(shouldAffectMethod));
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// One more...
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NSString *canBecomeKeySelectorString = [NSString stringWithFormat:@"_%@", NSStringFromSelector(@selector(canBecomeKeyWindow))];
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SEL canBecomeKeySelector = NSSelectorFromString(canBecomeKeySelectorString);
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Method canBecomeKeyMethod = class_getInstanceMethod(self, @selector(canBecomeKeyWindow));
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IMP canBecomeKeyImplementation = method_getImplementation(canBecomeKeyMethod);
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class_addMethod(self, canBecomeKeySelector, canBecomeKeyImplementation, method_getTypeEncoding(canBecomeKeyMethod));
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}
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@end
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