Enumeration 列挙

ColorSchemeContrast

The contrast between the app’s foreground and background colors.

Declaration 宣言 

enum ColorSchemeContrast

Overview 概要

You receive a contrast value when you read the colorSchemeContrast environment value. The value tells you if a standard or increased contrast currently applies to the view. SwiftUI updates the value whenever the contrast changes, and redraws views that depend on the value. For example, the following Text view automatically updates when the user enables increased contrast:


@Environment(\.colorSchemeContrast) private var colorSchemeContrast


var body: some View {
    Text(colorSchemeContrast == .standard ? "Standard" : "Increased")
}

The user sets the contrast by selecting the Increase Contrast option in Accessibility > Display in System Preferences on macOS, or Accessibility > Display & Text Size in the Settings app on iOS. Your app can’t override the user’s choice. For information about using color and contrast in your app, see Color and Contrast.

Topics 話題

Getting Contrast Options

case standard
SwiftUI displays views with standard contrast between the app’s foreground and background colors.
case increased
SwiftUI displays views with increased contrast between the app’s foreground and background colors.

Creating a Color Scheme Contrast

init?(UIAccessibilityContrast)
Creates a contrast from its accessibility contrast equivalent.

Accessing All Options

static var allCases: [ColorSchemeContrast]
A collection of all values of this type. この型の全ての値からなるコレクション。
typealias AllCases
A type that can represent a collection of all values of this type. ある型、それはこの型の全ての値からなるあるコレクションを表すことができます。

Comparing Color Scheme Contrasts カラースキームコントラストを比較する

static func == (ColorSchemeContrast, ColorSchemeContrast) -> Bool
Indicates whether two color scheme contrasts are equal.
static func != (Self, Self) -> Bool
Indicates whether two color scheme contrasts are unequal.
func hash(into: inout Hasher)
Hashes the essential components of the color scheme contrast by passing them into the given hash function.
var hashValue: Int
The hashed value of the color scheme contrast.

Default Implementations 省略時実装

Equatable Implementations

Relationships 関係

Conforms To 次に準拠

See Also 参照

Configuration

enum ColorScheme
The possible color schemes, corresponding to the light and dark appearances.
enum EditMode
A mode that indicates whether the user can edit a view’s content.
enum UserInterfaceSizeClass
A set of values that indicate the visual size available to the view. 一揃いの値、それはビューに利用可能な視覚的大きさを指し示します。