88 lines
3.6 KiB
Objective-C
Executable File
88 lines
3.6 KiB
Objective-C
Executable File
//
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// PureLayout+Internal.h
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// https://github.com/PureLayout/PureLayout
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//
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// Copyright (c) 2014-2015 Tyler Fox
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//
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// This code is distributed under the terms and conditions of the MIT license.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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#import "PureLayoutDefines.h"
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// Using generics with NSMutableArray is so common in the internal implementation of PureLayout that it gets a dedicated preprocessor macro for better readability.
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#define PL__NSMutableArray_of(type) PL__GENERICS(NSMutableArray, type)
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PL__ASSUME_NONNULL_BEGIN
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/** A constant that represents the smallest valid positive value for the multiplier of a constraint,
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since a value of 0 will cause the second item to be lost in the internal auto layout engine. */
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static const CGFloat kMULTIPLIER_MIN_VALUE = (CGFloat)0.00001; // very small floating point numbers (e.g. CGFLOAT_MIN) can cause problems
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/**
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A category that exposes the internal (private) helper methods of the ALView+PureLayout category.
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*/
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@interface ALView (PureLayoutInternal)
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- (void)al_addConstraint:(NSLayoutConstraint *)constraint;
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- (ALView *)al_commonSuperviewWithView:(ALView *)otherView;
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- (NSLayoutConstraint *)al_alignAttribute:(ALAttribute)attribute toView:(ALView *)otherView forAxis:(ALAxis)axis;
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@end
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/**
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A category that exposes the internal (private) helper methods of the NSArray+PureLayout category.
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*/
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@interface NSArray (PureLayoutInternal)
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- (ALView *)al_commonSuperviewOfViews;
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- (BOOL)al_containsMinimumNumberOfViews:(NSUInteger)minimumNumberOfViews;
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- (PL__NSArray_of(ALView *) *)al_copyViewsOnly;
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@end
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/**
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A category that exposes the internal (private) helper methods of the NSLayoutConstraint+PureLayout category.
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*/
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@interface NSLayoutConstraint (PureLayoutInternal)
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+ (BOOL)al_preventAutomaticConstraintInstallation;
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+ (PL__NSMutableArray_of(NSLayoutConstraint *) *)al_currentArrayOfCreatedConstraints;
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+ (BOOL)al_isExecutingPriorityConstraintsBlock;
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+ (ALLayoutPriority)al_currentGlobalConstraintPriority;
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#if PL__PureLayout_MinBaseSDK_iOS_8_0 || PL__PureLayout_MinBaseSDK_OSX_10_10
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+ (nullable NSString *)al_currentGlobalConstraintIdentifier;
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#endif /* PL__PureLayout_MinBaseSDK_iOS_8_0 || PL__PureLayout_MinBaseSDK_OSX_10_10 */
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+ (void)al_applyGlobalStateToConstraint:(NSLayoutConstraint *)constraint;
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+ (NSLayoutAttribute)al_layoutAttributeForAttribute:(ALAttribute)attribute;
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+ (ALLayoutConstraintAxis)al_constraintAxisForAxis:(ALAxis)axis;
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#if PL__PureLayout_MinBaseSDK_iOS_8_0
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+ (ALMargin)al_marginForEdge:(ALEdge)edge;
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+ (ALMarginAxis)al_marginAxisForAxis:(ALAxis)axis;
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#endif /* PL__PureLayout_MinBaseSDK_iOS_8_0 */
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@end
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PL__ASSUME_NONNULL_END
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