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https://github.com/gnustep/libs-gui.git
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Implement NSAutoresizingMaskLayoutConstraint class
This commit is contained in:
Benjamin Johnson
parent
4b13050e70
commit
4fec29a66b
4 changed files with 337 additions and 0 deletions
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@ -112,6 +112,7 @@ enum {
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NSViewHeightSizable = 16, // view's height can stretch
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NSViewMaxYMargin = 32 // top margin between views can stretch
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};
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typedef NSUInteger NSAutoresizingMaskOptions;
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/*
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* constants defining if and how a view (or cell) should draw a focus ring
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@ -54,6 +54,7 @@ NSAppearance.m \
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NSApplication.m \
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NSArrayController.m \
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NSAttributedString.m \
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NSAutoresizingMaskLayoutConstraint.m \
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NSBezierPath.m \
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NSBitmapImageRep.m \
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NSBitmapImageRep+GIF.m \
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43
Source/NSAutoresizingMaskLayoutConstraint.h
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43
Source/NSAutoresizingMaskLayoutConstraint.h
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@ -0,0 +1,43 @@
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/* Implementation of class NSAutoresizingMaskLayoutConstraint
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Copyright (C) 2023 Free Software Foundation, Inc.
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By: Benjamin Johnson <benjaminkylejohnson@gmail.com>
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Date: 2023
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This file is part of the GNUstep Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110 USA.
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*/
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#ifndef _GNUstep_H_NSAutoresizingMaskLayoutConstraint
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#define _GNUstep_H_NSAutoresizingMaskLayoutConstraint
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#import <AppKit/NSLayoutConstraint.h>
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#import <AppKit/NSView.h>
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#import <Foundation/NSGeometry.h>
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@interface NSAutoresizingMaskLayoutConstraint : NSLayoutConstraint
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+ (NSArray *) constraintsWithAutoresizingMask:
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(NSAutoresizingMaskOptions)autoresizingMask
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subitem: (NSView *)subItem
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frame: (NSRect)frame
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superitem: (NSView *)superItem
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bounds: (NSRect)bounds;
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@end
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#endif /* _GNUstep_H_NSAutoresizingMaskLayoutConstraint */
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292
Source/NSAutoresizingMaskLayoutConstraint.m
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292
Source/NSAutoresizingMaskLayoutConstraint.m
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@ -0,0 +1,292 @@
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/* Implementation of class NSAutoresizingMaskLayoutConstraint
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Copyright (C) 2023 Free Software Foundation, Inc.
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By: Benjamin Johnson <benjaminkylejohnson@gmail.com>
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Date: 2023
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This file is part of the GNUstep Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110 USA.
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*/
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#import "NSAutoresizingMaskLayoutConstraint.h"
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@implementation NSAutoresizingMaskLayoutConstraint
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NSUInteger minXAttribute = 32;
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NSUInteger minYAttribute = 33;
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NSUInteger maxXAttribute = 36;
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NSUInteger maxYAttribute = 37;
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+ (NSArray *)constraintsWithAutoresizingMask:
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(NSAutoresizingMaskOptions) autoresizingMask
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subitem: (NSView *) subItem
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frame: (NSRect) frame
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superitem: (NSView *) superItem
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bounds: (NSRect) bounds
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{
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if (autoresizingMask == NSViewNotSizable)
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{
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return [NSArray array];
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}
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NSAutoresizingMaskLayoutConstraint *xConstraint =
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[self _xConstraintForAutoresizingMask: autoresizingMask
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subitem: subItem
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frame: frame
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superitem: superItem
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bounds: bounds];
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NSAutoresizingMaskLayoutConstraint *yConstraint =
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[self _yConstraintForAutoresizingMask: autoresizingMask
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subitem: subItem
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frame: frame
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superitem: superItem
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bounds: bounds];
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NSAutoresizingMaskLayoutConstraint *widthConstraint =
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[self _widthConstraintForAutoresizingMask: autoresizingMask
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subitem: subItem
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frame: frame
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superitem: superItem
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bounds: bounds];
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NSAutoresizingMaskLayoutConstraint *heightConstraint =
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[self _heightConstraintForAutoresizingMask: autoresizingMask
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subitem: subItem
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frame: frame
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superitem: superItem
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bounds: bounds];
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NSMutableArray *constraints = [NSMutableArray arrayWithCapacity:4];
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if ((autoresizingMask & NSViewMinXMargin)
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&& (autoresizingMask & NSViewMaxXMargin))
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{
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[constraints addObject: widthConstraint];
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[constraints addObject: xConstraint];
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}
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else
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{
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[constraints addObject: xConstraint];
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[constraints addObject: widthConstraint];
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}
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if ((autoresizingMask & NSViewMinYMargin)
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&& (autoresizingMask & NSViewMaxYMargin))
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{
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[constraints addObject: heightConstraint];
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[constraints addObject: yConstraint];
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}
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else
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{
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[constraints addObject: yConstraint];
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[constraints addObject: heightConstraint];
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}
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return constraints;
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}
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+ (NSAutoresizingMaskLayoutConstraint *)
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_xConstraintForAutoresizingMask: (NSAutoresizingMaskOptions)autoresizingMask
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subitem: (NSView *)subItem
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frame: (NSRect)frame
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superitem: (NSView *)superItem
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bounds: (NSRect)bounds
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{
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if ((autoresizingMask & NSViewMinXMargin)
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&& (autoresizingMask & NSViewMaxXMargin))
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{
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CGFloat width = bounds.size.width - frame.size.width;
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CGFloat x = frame.origin.x - bounds.origin.x;
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CGFloat xWidthRatio = x / width;
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CGFloat constant = xWidthRatio * frame.size.width * -1;
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: minXAttribute
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relatedBy: NSLayoutRelationEqual
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toItem: superItem
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attribute: NSLayoutAttributeWidth
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multiplier: xWidthRatio
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constant: constant];
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}
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else if (autoresizingMask & NSViewMinXMargin)
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{
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: superItem
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attribute: NSLayoutAttributeWidth
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relatedBy: NSLayoutRelationEqual
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toItem: subItem
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attribute: maxXAttribute
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multiplier: 1.0
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constant: (frame.size.width + frame.origin.x
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- bounds.size.width - bounds.origin.x)
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* -1];
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}
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else if (autoresizingMask & NSViewMaxXMargin)
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{
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: minXAttribute
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relatedBy: NSLayoutRelationEqual
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toItem: nil
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attribute: NSLayoutAttributeNotAnAttribute
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multiplier: 1.0
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constant: frame.origin.x - bounds.origin.x];
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}
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else
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{
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: minXAttribute
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relatedBy: NSLayoutRelationEqual
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toItem: nil
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attribute: NSLayoutAttributeNotAnAttribute
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multiplier: 1.0
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constant: frame.origin.x - bounds.origin.x];
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}
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}
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+ (NSAutoresizingMaskLayoutConstraint *)
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_yConstraintForAutoresizingMask: (NSAutoresizingMaskOptions)autoresizingMask
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subitem: (NSView *)subItem
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frame: (NSRect)frame
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superitem: (NSView *)superItem
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bounds: (NSRect)bounds
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{
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if ((autoresizingMask & NSViewMinYMargin)
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&& (autoresizingMask & NSViewMaxYMargin))
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{
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CGFloat height = bounds.size.height - frame.size.height;
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CGFloat y = frame.origin.y - bounds.origin.y;
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CGFloat yHeightRatio = y / height;
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CGFloat constant = yHeightRatio * frame.size.height * -1;
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: minYAttribute
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relatedBy: NSLayoutRelationEqual
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toItem: superItem
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attribute: NSLayoutAttributeHeight
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multiplier: yHeightRatio
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constant: constant];
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}
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else if (autoresizingMask & NSViewMinYMargin)
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{
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CGFloat constant = ((frame.size.height + frame.origin.y)
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- (bounds.size.height + bounds.origin.y))
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* -1;
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: superItem
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attribute: NSLayoutAttributeHeight
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relatedBy: NSLayoutRelationEqual
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toItem: subItem
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attribute: maxYAttribute
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multiplier: 1.0
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constant: constant];
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}
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else if (autoresizingMask & NSViewMaxYMargin)
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{
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CGFloat constant = (frame.origin.y - bounds.origin.y);
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: minYAttribute
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relatedBy: NSLayoutRelationEqual
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toItem: nil
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attribute: NSLayoutAttributeNotAnAttribute
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multiplier: 1.0
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constant: constant];
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}
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else
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{
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: minYAttribute
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relatedBy: NSLayoutRelationEqual
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toItem: nil
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attribute: NSLayoutAttributeNotAnAttribute
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multiplier: 1.0
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constant: frame.origin.y - bounds.origin.y];
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}
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}
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+ (NSAutoresizingMaskLayoutConstraint *)
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_widthConstraintForAutoresizingMask:
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(NSAutoresizingMaskOptions)autoresizingMask
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subitem: (NSView *)subItem
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frame: (NSRect)frame
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superitem: (NSView *)superItem
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bounds: (NSRect)bounds
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{
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if (autoresizingMask & NSViewWidthSizable)
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{
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CGFloat widthConstant = ((frame.size.width + frame.origin.x)
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- (bounds.origin.x + bounds.size.width))
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* -1;
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: superItem
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attribute: NSLayoutAttributeWidth
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relatedBy: NSLayoutRelationEqual
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toItem: subItem
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attribute: maxXAttribute
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multiplier: 1.0
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constant: widthConstant];
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}
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else
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{
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: NSLayoutAttributeWidth
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relatedBy: NSLayoutRelationEqual
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toItem: nil
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attribute: NSLayoutAttributeNotAnAttribute
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multiplier: 1.0
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constant: frame.size.width];
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}
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}
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+ (NSAutoresizingMaskLayoutConstraint *)
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_heightConstraintForAutoresizingMask:
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(NSAutoresizingMaskOptions)autoresizingMask
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subitem: (NSView *)subItem
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frame: (NSRect)frame
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superitem: (NSView *)superItem
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bounds: (NSRect)bounds
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{
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if (autoresizingMask & NSViewHeightSizable)
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{
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CGFloat heightConstant = (frame.size.height + frame.origin.y
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- (bounds.origin.y + bounds.size.height))
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* -1;
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: superItem
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attribute: NSLayoutAttributeHeight
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relatedBy: NSLayoutRelationEqual
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toItem: subItem
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attribute: maxYAttribute
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multiplier: 1.0
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constant: heightConstant];
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}
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else
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{
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return [NSAutoresizingMaskLayoutConstraint
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constraintWithItem: subItem
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attribute: NSLayoutAttributeHeight
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relatedBy: NSLayoutRelationEqual
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toItem: nil
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attribute: NSLayoutAttributeNotAnAttribute
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multiplier: 1.0
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constant: frame.size.height];
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}
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}
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@end
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