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146 lines
5.3 KiB
Objective-C
146 lines
5.3 KiB
Objective-C
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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NS_ASSUME_NONNULL_BEGIN
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typedef void (^UIViewVisitorBlock)(UIView *view);
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// A convenience method for doing responsive layout. Scales between two
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// reference values (for iPhone 5 and iPhone 7 Plus) to the current device
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// based on screen width, linearly interpolating.
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CGFloat ScaleFromIPhone5To7Plus(CGFloat iPhone5Value, CGFloat iPhone7PlusValue);
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// A convenience method for doing responsive layout. Scales a reference
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// value (for iPhone 5) to the current device based on screen width,
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// linearly interpolating through the origin.
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CGFloat ScaleFromIPhone5(CGFloat iPhone5Value);
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// A set of helper methods for doing layout with PureLayout.
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@interface UIView (OWS)
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// Pins the width of this view to the width of its superview, with uniform margins.
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- (NSArray<NSLayoutConstraint *> *)autoPinWidthToSuperviewWithMargin:(CGFloat)margin;
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- (NSArray<NSLayoutConstraint *> *)autoPinWidthToSuperview;
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- (NSArray<NSLayoutConstraint *> *)autoPinWidthToSuperviewMargins;
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// Pins the height of this view to the height of its superview, with uniform margins.
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- (NSArray<NSLayoutConstraint *> *)autoPinHeightToSuperviewWithMargin:(CGFloat)margin;
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- (NSArray<NSLayoutConstraint *> *)autoPinHeightToSuperview;
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- (NSArray<NSLayoutConstraint *> *)ows_autoPinToSuperviewEdges;
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- (NSArray<NSLayoutConstraint *> *)ows_autoPinToSuperviewMargins;
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- (NSLayoutConstraint *)autoHCenterInSuperview;
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- (NSLayoutConstraint *)autoVCenterInSuperview;
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- (void)autoPinWidthToWidthOfView:(UIView *)view;
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- (void)autoPinHeightToHeightOfView:(UIView *)view;
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- (NSLayoutConstraint *)autoPinToSquareAspectRatio;
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- (NSLayoutConstraint *)autoPinToAspectRatioWithSize:(CGSize)size;
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- (NSLayoutConstraint *)autoPinToAspectRatio:(CGFloat)ratio;
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- (NSLayoutConstraint *)autoPinToAspectRatio:(CGFloat)ratio relation:(NSLayoutRelation)relation;
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#pragma mark - Content Hugging and Compression Resistance
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- (void)setContentHuggingLow;
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- (void)setContentHuggingHigh;
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- (void)setContentHuggingHorizontalLow;
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- (void)setContentHuggingHorizontalHigh;
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- (void)setContentHuggingVerticalLow;
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- (void)setContentHuggingVerticalHigh;
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- (void)setCompressionResistanceLow;
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- (void)setCompressionResistanceHigh;
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- (void)setCompressionResistanceHorizontalLow;
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- (void)setCompressionResistanceHorizontalHigh;
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- (void)setCompressionResistanceVerticalLow;
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- (void)setCompressionResistanceVerticalHigh;
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#pragma mark - Manual Layout
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- (CGFloat)left;
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- (CGFloat)right;
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- (CGFloat)top;
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- (CGFloat)bottom;
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- (CGFloat)width;
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- (CGFloat)height;
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- (void)centerOnSuperview;
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#pragma mark - RTL
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// For correct right-to-left layout behavior, use "leading" and "trailing",
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// not "left" and "right".
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//
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// These methods use layoutMarginsGuide anchors, which behave differently than
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// the PureLayout alternatives you indicated. Honoring layoutMargins is
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// particularly important in cell layouts, where it lets us align with the
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// complicated built-in behavior of table and collection view cells' default
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// contents.
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//
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// NOTE: the margin values are inverted in RTL layouts.
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- (NSArray<NSLayoutConstraint *> *)autoPinLeadingAndTrailingToSuperviewMargin;
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- (NSLayoutConstraint *)autoPinLeadingToSuperviewMargin;
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- (NSLayoutConstraint *)autoPinLeadingToSuperviewMarginWithInset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinTrailingToSuperviewMargin;
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- (NSLayoutConstraint *)autoPinTrailingToSuperviewMarginWithInset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinTopToSuperviewMargin;
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- (NSLayoutConstraint *)autoPinTopToSuperviewMarginWithInset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinBottomToSuperviewMargin;
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- (NSLayoutConstraint *)autoPinBottomToSuperviewMarginWithInset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinLeadingToTrailingEdgeOfView:(UIView *)view;
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- (NSLayoutConstraint *)autoPinLeadingToTrailingEdgeOfView:(UIView *)view offset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinTrailingToLeadingEdgeOfView:(UIView *)view;
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- (NSLayoutConstraint *)autoPinTrailingToLeadingEdgeOfView:(UIView *)view offset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinLeadingToEdgeOfView:(UIView *)view;
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- (NSLayoutConstraint *)autoPinLeadingToEdgeOfView:(UIView *)view offset:(CGFloat)margin;
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- (NSLayoutConstraint *)autoPinTrailingToEdgeOfView:(UIView *)view;
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- (NSLayoutConstraint *)autoPinTrailingToEdgeOfView:(UIView *)view offset:(CGFloat)margin;
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// Return Right on LTR and Left on RTL.
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- (NSTextAlignment)textAlignmentUnnatural;
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// Leading and trailing anchors honor layout margins.
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// When using a UIView as a "div" to structure layout, we don't want it to have margins.
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- (void)setHLayoutMargins:(CGFloat)value;
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- (NSArray<NSLayoutConstraint *> *)autoPinToEdgesOfView:(UIView *)view;
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#pragma mark - Containers
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+ (UIView *)containerView;
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+ (UIView *)verticalStackWithSubviews:(NSArray<UIView *> *)subviews spacing:(int)spacing;
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@end
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#pragma mark -
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@interface UIScrollView (OWS)
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// Returns YES if contentInsetAdjustmentBehavior is disabled.
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- (BOOL)applyScrollViewInsetsFix;
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@end
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#pragma mark -
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@interface UIAlertAction (OWS)
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+ (instancetype)actionWithTitle:(nullable NSString *)title
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accessibilityIdentifier:(nullable NSString *)accessibilityIdentifier
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style:(UIAlertActionStyle)style
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handler:(void (^__nullable)(UIAlertAction *action))handler;
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@end
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#pragma mark - Macros
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CGFloat CGHairlineWidth(void);
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NS_ASSUME_NONNULL_END
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