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MEDEdgeInsets
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,49 @@ | ||
| // | ||
| // MEDEdgeInsets.h | ||
| // Archimedes | ||
| // | ||
| // Created by Indragie Karunaratne on 8/6/2013. | ||
| // Copyright (c) 2013 GitHub. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| #ifdef __IPHONE_OS_VERSION_MIN_REQUIRED | ||
| #import <UIKit/UIKit.h> | ||
| typedef UIEdgeInsets MEDEdgeInsets; | ||
| #elif TARGET_OS_MAC | ||
| #import <AppKit/AppKit.h> | ||
| typedef NSEdgeInsets MEDEdgeInsets; | ||
| #endif | ||
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| // `MEDEdgeInsets` structure with all members set to 0. | ||
| #define MEDEdgeInsetsZero (MEDEdgeInsets){ .top = 0, .left = 0, .bottom = 0, .right = 0 } | ||
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| // Returns an MEDEgeInsets struct with the given edge insets. | ||
| MEDEdgeInsets MEDEdgeInsetsMake(CGFloat top, CGFloat left, CGFloat bottom, CGFloat right); | ||
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| // Returns whether the two given `MEDEdgeInsets` are equal. | ||
| BOOL MEDEdgeInsetsEqualToEdgeInsets(MEDEdgeInsets insets1, MEDEdgeInsets insets2); | ||
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| // The top inset will affect the min Y coordinate on iOS, and max Y coordinate on | ||
| // OS X, and vice-versa for bottom due to the default flippedness of drawing contexts | ||
| // on each platform. | ||
| // | ||
| // Returns a rectangle adjusted by incrementing the origin and decrementing the size | ||
| // of the given rect by applying the given insets. | ||
| CGRect MEDEdgeInsetsInsetRect(CGRect rect, MEDEdgeInsets insets); | ||
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| // Returns a string formatted to contain data from an `MEDEdgeInsets` structure. | ||
| // | ||
| // This string can be passed into `MEDEdgeInsetsFromString()` to recreate the original | ||
| // `MEDEdgeInsets` structure. | ||
| NSString * NSStringFromMEDEdgeInsets(MEDEdgeInsets insets); | ||
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| // Returns an `MEDEdgeInsets` structure corresponding to data in the given string | ||
| // or `MEDEdgeInsetsZero` if the string is not formatted appropriately. | ||
| // | ||
| // The string format is “{top, left, bottom, right}”, where each member of the | ||
| // `MEDEdgeInsets` structure is separated with a comma. This function should generally | ||
| // only be used to convert strings that were previously created using the | ||
| // `NSStringFromMEDEdgeInsets()` function. | ||
| MEDEdgeInsets MEDEdgeInsetsFromString(NSString *string); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // | ||
| // MEDEdgeInsets.m | ||
| // Archimedes | ||
| // | ||
| // Created by Indragie Karunaratne on 8/6/2013. | ||
| // Copyright (c) 2013 GitHub. All rights reserved. | ||
| // | ||
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| #import "MEDEdgeInsets.h" | ||
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| MEDEdgeInsets MEDEdgeInsetsMake(CGFloat top, CGFloat left, CGFloat bottom, CGFloat right) { | ||
| return (MEDEdgeInsets){ .top = top, .left = left, .bottom = bottom, .right = right }; | ||
| } | ||
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| BOOL MEDEdgeInsetsEqualToEdgeInsets(MEDEdgeInsets insets1, MEDEdgeInsets insets2) { | ||
| return (fabs(insets1.top - insets2.top) < 0.1) && | ||
| (fabs(insets1.left - insets2.left) < 0.1) && | ||
| (fabs(insets1.bottom - insets2.bottom) < 0.1) && | ||
| (fabs(insets1.right - insets2.right) < 0.1); | ||
| } | ||
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| CGRect MEDEdgeInsetsInsetRect(CGRect rect, MEDEdgeInsets insets) { | ||
| if (((insets.top + insets.bottom) > rect.size.height) || ((insets.left + insets.right) > rect.size.width)) { | ||
| return CGRectNull; | ||
| } else { | ||
| rect.origin.x += insets.left; | ||
| #ifdef __IPHONE_OS_VERSION_MIN_REQUIRED | ||
| rect.origin.y += insets.top; | ||
| #elif TARGET_OS_MAC | ||
| rect.origin.y += insets.bottom; | ||
| #endif | ||
| rect.size.height -= (insets.top + insets.bottom); | ||
| rect.size.width -= (insets.left + insets.right); | ||
| return rect; | ||
| } | ||
| } | ||
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| NSString * NSStringFromMEDEdgeInsets(MEDEdgeInsets insets) { | ||
| return [NSString stringWithFormat:@"{%g, %g, %g, %g}", insets.top, insets.left, insets.bottom, insets.right]; | ||
| } | ||
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| MEDEdgeInsets MEDEdgeInsetsFromString(NSString *string) { | ||
| NSCParameterAssert(string != nil); | ||
| double top = 0, left = 0, bottom = 0, right = 0; | ||
| sscanf(string.UTF8String, "{%lg, %lg, %lg, %lg}", &top, &left, &bottom, &right); | ||
| return MEDEdgeInsetsMake((CGFloat)top, (CGFloat)left, (CGFloat)bottom, (CGFloat)right); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // | ||
| // MEDEdgeInsetsSpec.m | ||
| // Archimedes | ||
| // | ||
| // Created by Indragie Karunaratne on 8/6/2013. | ||
| // Copyright (c) 2013 GitHub. All rights reserved. | ||
| // | ||
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| #import "MEDEdgeInsets.h" | ||
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| static const MEDEdgeInsets insets = (MEDEdgeInsets){ .top = 1, .left = 2, .bottom = 3, .right = 4 }; | ||
| static const MEDEdgeInsets insets2 = (MEDEdgeInsets){ .top = 1.05f, .left = 2.05f, .bottom = 3.05f, .right = 4.05f }; | ||
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| SpecBegin(MEDEdgeInsets) | ||
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| it(@"should check equality between MEDEdgeInsets", ^{ | ||
| MEDEdgeInsets insets3 = MEDEdgeInsetsMake(5, 6, 7, 8); | ||
| expect(MEDEdgeInsetsEqualToEdgeInsets(insets, insets)).to.beTruthy(); | ||
| expect(MEDEdgeInsetsEqualToEdgeInsets(insets, insets2)).to.beTruthy(); | ||
| expect(MEDEdgeInsetsEqualToEdgeInsets(insets, insets3)).to.beFalsy(); | ||
| }); | ||
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| it(@"should make an MEDEdgeInsets", ^{ | ||
| expect(MEDEdgeInsetsMake(1, 2, 3, 4)).to.equal(insets); | ||
| }); | ||
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| it(@"should inset a CGRect", ^{ | ||
| CGRect rect = CGRectMake(10, 10, 10, 10); | ||
| #ifdef __IPHONE_OS_VERSION_MIN_REQUIRED | ||
| CGRect insetRect = CGRectMake(12, 11, 4, 6); | ||
| #elif TARGET_OS_MAC | ||
| CGRect insetRect = CGRectMake(12, 13, 4, 6); | ||
| #endif | ||
| expect(MEDEdgeInsetsInsetRect(rect, insets)).to.equal(insetRect); | ||
| }); | ||
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| it(@"should create a string from an MEDEdgeInsets", ^{ | ||
| expect(NSStringFromMEDEdgeInsets(insets)).to.equal(@"{1, 2, 3, 4}"); | ||
| expect(NSStringFromMEDEdgeInsets(insets2)).to.equal(@"{1.05, 2.05, 3.05, 4.05}"); | ||
| }); | ||
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| it(@"should create an MEDEdgeInsets from a string", ^{ | ||
| expect(MEDEdgeInsetsFromString(@"{1, 2, 3, 4}")).to.equal(insets); | ||
| expect(MEDEdgeInsetsEqualToEdgeInsets(MEDEdgeInsetsFromString(@"{1.05, 2.05, 3.05, 4.05}"), insets2)).to.beTruthy(); | ||
| }); | ||
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| SpecEnd |
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