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432 lines
12 KiB
Objective-C
432 lines
12 KiB
Objective-C
//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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#import "OWSMath.h"
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#import "UIView+OWS.h"
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#import <SignalServiceKit/AppContext.h>
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NS_ASSUME_NONNULL_BEGIN
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static inline CGFloat ScreenShortDimension()
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{
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return MIN([UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);
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}
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static const CGFloat kIPhone5ScreenWidth = 320.f;
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static const CGFloat kIPhone7PlusScreenWidth = 414.f;
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CGFloat ScaleFromIPhone5To7Plus(CGFloat iPhone5Value, CGFloat iPhone7PlusValue)
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{
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CGFloat screenShortDimension = ScreenShortDimension();
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return round(CGFloatLerp(iPhone5Value,
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iPhone7PlusValue,
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CGFloatInverseLerp(screenShortDimension, kIPhone5ScreenWidth, kIPhone7PlusScreenWidth)));
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}
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CGFloat ScaleFromIPhone5(CGFloat iPhone5Value)
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{
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CGFloat screenShortDimension = ScreenShortDimension();
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return round(iPhone5Value * screenShortDimension / kIPhone5ScreenWidth);
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}
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#pragma mark -
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@implementation UIView (OWS)
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- (NSArray<NSLayoutConstraint *> *)autoPinWidthToSuperviewWithMargin:(CGFloat)margin
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{
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NSArray<NSLayoutConstraint *> *result = @[
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[self autoPinEdgeToSuperviewEdge:ALEdgeLeft withInset:margin],
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[self autoPinEdgeToSuperviewEdge:ALEdgeRight withInset:margin],
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];
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return result;
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}
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- (NSArray<NSLayoutConstraint *> *)autoPinWidthToSuperview
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{
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NSArray<NSLayoutConstraint *> *result = @[
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[self autoPinEdgeToSuperviewEdge:ALEdgeLeft],
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[self autoPinEdgeToSuperviewEdge:ALEdgeRight],
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];
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return result;
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}
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- (NSArray<NSLayoutConstraint *> *)autoPinLeadingAndTrailingToSuperview
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{
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NSArray<NSLayoutConstraint *> *result = @[
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[self autoPinLeadingToSuperview],
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[self autoPinTrailingToSuperview],
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];
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return result;
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}
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- (NSArray<NSLayoutConstraint *> *)autoPinHeightToSuperviewWithMargin:(CGFloat)margin
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{
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NSArray<NSLayoutConstraint *> *result = @[
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[self autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:margin],
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[self autoPinEdgeToSuperviewEdge:ALEdgeBottom withInset:margin],
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];
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return result;
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}
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- (NSArray<NSLayoutConstraint *> *)autoPinHeightToSuperview
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{
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NSArray<NSLayoutConstraint *> *result = @[
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[self autoPinEdgeToSuperviewEdge:ALEdgeTop],
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[self autoPinEdgeToSuperviewEdge:ALEdgeBottom],
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];
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return result;
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}
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- (NSArray<NSLayoutConstraint *> *)autoPinToSuperviewEdges
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{
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NSArray<NSLayoutConstraint *> *result = @[
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[self autoPinEdgeToSuperviewEdge:ALEdgeLeft],
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[self autoPinEdgeToSuperviewEdge:ALEdgeRight],
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[self autoPinEdgeToSuperviewEdge:ALEdgeTop],
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[self autoPinEdgeToSuperviewEdge:ALEdgeBottom],
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];
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return result;
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}
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- (NSLayoutConstraint *)autoHCenterInSuperview
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{
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return [self autoAlignAxis:ALAxisVertical toSameAxisOfView:self.superview];
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}
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- (NSLayoutConstraint *)autoVCenterInSuperview
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{
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return [self autoAlignAxis:ALAxisHorizontal toSameAxisOfView:self.superview];
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}
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- (void)autoPinWidthToWidthOfView:(UIView *)view
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{
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OWSAssert(view);
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[self autoPinEdge:ALEdgeLeft toEdge:ALEdgeLeft ofView:view];
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[self autoPinEdge:ALEdgeRight toEdge:ALEdgeRight ofView:view];
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}
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- (void)autoPinHeightToHeightOfView:(UIView *)view
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{
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OWSAssert(view);
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[self autoPinEdge:ALEdgeTop toEdge:ALEdgeTop ofView:view];
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[self autoPinEdge:ALEdgeBottom toEdge:ALEdgeBottom ofView:view];
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}
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- (NSLayoutConstraint *)autoPinToSquareAspectRatio
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{
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return [self autoPinToAspectRatio:1.0];
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}
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- (NSLayoutConstraint *)autoPinToAspectRatio:(CGFloat)ratio
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{
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// Clamp to ensure view has reasonable aspect ratio.
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CGFloat clampedRatio = Clamp(ratio, 0.05, 95.0);
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if (clampedRatio != ratio) {
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OWSFail(@"Invalid aspect ratio: %f for view: %@", ratio, self);
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}
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self.translatesAutoresizingMaskIntoConstraints = NO;
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NSLayoutConstraint *constraint = [NSLayoutConstraint constraintWithItem:self
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeHeight
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multiplier:clampedRatio
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constant:0.f];
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[constraint autoInstall];
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return constraint;
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}
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#pragma mark - Content Hugging and Compression Resistance
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- (void)setContentHuggingLow
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{
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[self setContentHuggingHorizontalLow];
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[self setContentHuggingVerticalLow];
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}
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- (void)setContentHuggingHigh
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{
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[self setContentHuggingHorizontalHigh];
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[self setContentHuggingVerticalHigh];
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}
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- (void)setContentHuggingHorizontalLow
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{
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[self setContentHuggingPriority:UILayoutPriorityDefaultLow forAxis:UILayoutConstraintAxisHorizontal];
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}
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- (void)setContentHuggingHorizontalHigh
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{
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[self setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
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}
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- (void)setContentHuggingVerticalLow
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{
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[self setContentHuggingPriority:UILayoutPriorityDefaultLow forAxis:UILayoutConstraintAxisVertical];
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}
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- (void)setContentHuggingVerticalHigh
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{
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[self setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
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}
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- (void)setCompressionResistanceLow
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{
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[self setCompressionResistanceHorizontalLow];
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[self setCompressionResistanceVerticalLow];
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}
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- (void)setCompressionResistanceHigh
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{
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[self setCompressionResistanceHorizontalHigh];
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[self setCompressionResistanceVerticalHigh];
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}
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- (void)setCompressionResistanceHorizontalLow
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{
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[self setContentCompressionResistancePriority:0 forAxis:UILayoutConstraintAxisHorizontal];
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}
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- (void)setCompressionResistanceHorizontalHigh
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{
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[self setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
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}
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- (void)setCompressionResistanceVerticalLow
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{
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[self setContentCompressionResistancePriority:0 forAxis:UILayoutConstraintAxisVertical];
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}
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- (void)setCompressionResistanceVerticalHigh
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{
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[self setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
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}
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#pragma mark - Manual Layout
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- (CGFloat)left
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{
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return self.frame.origin.x;
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}
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- (CGFloat)right
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{
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return self.frame.origin.x + self.frame.size.width;
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}
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- (CGFloat)top
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{
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return self.frame.origin.y;
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}
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- (CGFloat)bottom
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{
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return self.frame.origin.y + self.frame.size.height;
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}
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- (CGFloat)width
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{
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return self.frame.size.width;
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}
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- (CGFloat)height
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{
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return self.frame.size.height;
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}
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- (void)centerOnSuperview
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{
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OWSAssert(self.superview);
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self.frame = CGRectMake(round((self.superview.width - self.width) * 0.5f),
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round((self.superview.height - self.height) * 0.5f),
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self.width,
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self.height);
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}
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#pragma mark - RTL
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- (BOOL)isRTL
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{
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if (@available(iOS 9.0, *)) {
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return ([UIView userInterfaceLayoutDirectionForSemanticContentAttribute:self.semanticContentAttribute]
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== UIUserInterfaceLayoutDirectionRightToLeft);
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} else {
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return [CurrentAppContext() isRTL];
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}
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}
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- (NSLayoutConstraint *)autoPinLeadingToSuperview
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{
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return [self autoPinLeadingToSuperviewWithMargin:0];
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}
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- (NSLayoutConstraint *)autoPinLeadingToSuperviewWithMargin:(CGFloat)margin
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{
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if (@available(iOS 9.0, *)) {
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NSLayoutConstraint *constraint =
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[self.leadingAnchor constraintEqualToAnchor:self.superview.layoutMarginsGuide.leadingAnchor
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constant:margin];
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constraint.active = YES;
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return constraint;
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} else {
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margin += (self.isRTL ? self.superview.layoutMargins.right : self.superview.layoutMargins.left);
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return [self autoPinEdgeToSuperviewEdge:ALEdgeLeading withInset:margin];
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}
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}
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- (NSLayoutConstraint *)autoPinTrailingToSuperview
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{
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return [self autoPinTrailingToSuperviewWithMargin:0];
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}
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- (NSLayoutConstraint *)autoPinTrailingToSuperviewWithMargin:(CGFloat)margin
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{
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if (@available(iOS 9.0, *)) {
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NSLayoutConstraint *constraint =
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[self.trailingAnchor constraintEqualToAnchor:self.superview.layoutMarginsGuide.trailingAnchor
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constant:-margin];
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constraint.active = YES;
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return constraint;
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} else {
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margin += (self.isRTL ? self.superview.layoutMargins.left : self.superview.layoutMargins.right);
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return [self autoPinEdgeToSuperviewEdge:ALEdgeTrailing withInset:margin];
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}
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}
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- (NSLayoutConstraint *)autoPinLeadingToTrailingOfView:(UIView *)view
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{
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OWSAssert(view);
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return [self autoPinLeadingToTrailingOfView:view margin:0];
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}
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- (NSLayoutConstraint *)autoPinLeadingToTrailingOfView:(UIView *)view margin:(CGFloat)margin
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{
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OWSAssert(view);
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if (@available(iOS 9.0, *)) {
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NSLayoutConstraint *constraint =
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[self.leadingAnchor constraintEqualToAnchor:view.trailingAnchor constant:margin];
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constraint.active = YES;
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return constraint;
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} else {
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return [self autoPinEdge:ALEdgeLeading toEdge:ALEdgeTrailing ofView:view withOffset:margin];
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}
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}
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- (NSLayoutConstraint *)autoPinTrailingToLeadingOfView:(UIView *)view
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{
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OWSAssert(view);
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return [self autoPinTrailingToLeadingOfView:view margin:0];
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}
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- (NSLayoutConstraint *)autoPinTrailingToLeadingOfView:(UIView *)view margin:(CGFloat)margin
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{
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OWSAssert(view);
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if (@available(iOS 9.0, *)) {
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NSLayoutConstraint *constraint =
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[self.trailingAnchor constraintEqualToAnchor:view.leadingAnchor constant:-margin];
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constraint.active = YES;
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return constraint;
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} else {
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return [self autoPinEdge:ALEdgeTrailing toEdge:ALEdgeLeading ofView:view withOffset:margin];
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}
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}
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- (NSLayoutConstraint *)autoPinLeadingToView:(UIView *)view
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{
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OWSAssert(view);
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return [self autoPinLeadingToView:view margin:0];
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}
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- (NSLayoutConstraint *)autoPinLeadingToView:(UIView *)view margin:(CGFloat)margin
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{
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OWSAssert(view);
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if (@available(iOS 9.0, *)) {
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NSLayoutConstraint *constraint =
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[self.leadingAnchor constraintEqualToAnchor:view.leadingAnchor constant:margin];
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constraint.active = YES;
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return constraint;
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} else {
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return [self autoPinEdge:ALEdgeLeading toEdge:ALEdgeLeading ofView:view withOffset:margin];
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}
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}
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- (NSLayoutConstraint *)autoPinTrailingToView:(UIView *)view
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{
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OWSAssert(view);
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return [self autoPinTrailingToView:view margin:0];
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}
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- (NSLayoutConstraint *)autoPinTrailingToView:(UIView *)view margin:(CGFloat)margin
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{
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OWSAssert(view);
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if (@available(iOS 9.0, *)) {
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NSLayoutConstraint *constraint =
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[self.trailingAnchor constraintEqualToAnchor:view.trailingAnchor constant:margin];
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constraint.active = YES;
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return constraint;
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} else {
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return [self autoPinEdge:ALEdgeTrailing toEdge:ALEdgeTrailing ofView:view withOffset:margin];
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}
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}
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- (NSTextAlignment)textAlignmentUnnatural
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{
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return (self.isRTL ? NSTextAlignmentLeft : NSTextAlignmentRight);
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}
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+ (UIView *)containerView
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{
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UIView *view = [UIView new];
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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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view.layoutMargins = UIEdgeInsetsZero;
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return view;
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}
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- (void)setHLayoutMargins:(CGFloat)value
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{
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UIEdgeInsets layoutMargins = self.layoutMargins;
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layoutMargins.left = value;
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layoutMargins.right = value;
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self.layoutMargins = layoutMargins;
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}
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#pragma mark - Debugging
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- (void)addBorderWithColor:(UIColor *)color
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{
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self.layer.borderColor = color.CGColor;
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self.layer.borderWidth = 1;
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}
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- (void)addRedBorder
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{
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[self addBorderWithColor:[UIColor redColor]];
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}
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- (void)addRedBorderRecursively
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{
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[self addRedBorder];
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for (UIView *subview in self.subviews) {
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[subview addRedBorderRecursively];
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}
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}
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@end
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NS_ASSUME_NONNULL_END
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