Created
May 15, 2012 17:39
-
-
Save rsaunders100/2703587 to your computer and use it in GitHub Desktop.
(iOS) Make a view with given subviews arranged linearly (either horizontally or vertically)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // | |
| // UIView+ViewArranging.h | |
| // Created by on 15/05/2012. | |
| // | |
| #import <UIKit/UIKit.h> | |
| typedef enum { | |
| ViewArrangingDirectionHorizontal, | |
| ViewArrangingDirectionVertical | |
| }ViewArrangingDirection; | |
| @interface UIView (ViewArranging) | |
| // Creates a new view and adds the subviews to it either in the given direction. | |
| // The returned view is just big enough to enclose the given views. | |
| // Any views that are smaller than the parents size | |
| // will be centered either horizontally or vertically | |
| + (UIView*) viewWithDirection:(ViewArrangingDirection)viewArrangingDirection | |
| subviews:(UIView *)firstSubview, ...NS_REQUIRES_NIL_TERMINATION; | |
| @end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // | |
| // UIView+ViewArranging.m | |
| // Created by on 15/05/2012. | |
| // | |
| #import "UIView+ViewArranging.h" | |
| @implementation UIView (ViewArranging) | |
| + (UIView*) viewWithDirection:(ViewArrangingDirection)viewArrangingDirection | |
| subviews:(UIView *)firstSubview, ...NS_REQUIRES_NIL_TERMINATION | |
| { | |
| NSMutableArray* subviews = [NSMutableArray arrayWithCapacity:10]; | |
| float totalWidth = 0; | |
| float totalHeight = 0; | |
| float maxWidth = 0; | |
| float maxHeight = 0; | |
| va_list args; | |
| va_start(args, firstSubview); | |
| for (UIView *subview = firstSubview; subview != nil; subview = va_arg(args, UIView*)) | |
| { | |
| float width = subview.frame.size.width; | |
| float height = subview.frame.size.height; | |
| totalWidth += width; | |
| totalHeight += height; | |
| maxWidth = MAX(maxWidth, width); | |
| maxHeight = MAX(maxHeight, height); | |
| [subviews addObject:subview]; | |
| } | |
| va_end(args); | |
| UIView* view = nil; | |
| if (viewArrangingDirection == ViewArrangingDirectionHorizontal) { | |
| view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, totalWidth, maxHeight)]; | |
| } else { | |
| view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, maxWidth, totalHeight)]; | |
| } | |
| __block float totalOffset = 0; | |
| [subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { | |
| UIView* subview = obj; | |
| CGRect frame = subview.frame; | |
| if (viewArrangingDirection == ViewArrangingDirectionHorizontal) { | |
| frame.origin.x = totalOffset; | |
| totalOffset += frame.size.width; | |
| frame.origin.y = (maxHeight - frame.size.height) / 2; | |
| } else { | |
| frame.origin.y = totalOffset; | |
| totalOffset += frame.size.height; | |
| frame.origin.x = (maxWidth - frame.size.width) / 2; | |
| } | |
| subview.frame = frame; | |
| [view addSubview:subview]; | |
| }]; | |
| return view; | |
| } | |
| @end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment