在SwiftUI中,您可以使用所有这些方便的小字体方便访问器,例如Font.caption
,Font.title
,Font.body
等。
例如
VStack {
Text("Some Title").font(Font.title)
Text("Some Caption Text").font(Font.caption)
}
它们都为默认的Helvetica字体系列指定了不同的字体样式。我想使用这些非常有用的便捷访问器,而无需在我的应用程序中使用Helvetica。 我可以更改默认字体系列吗?还是我经常需要应用自定义字体,例如:
Text("Custom Text").font(Font.custom("SourceSansPro-Regular", size: 14.0)
答案 0 :(得分:6)
如果需要,您可以覆盖系统字体。
extension Font {
/// Create a font with the large title text style.
public static var largeTitle: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .largeTitle).pointSize)
}
/// Create a font with the title text style.
public static var title: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .title1).pointSize)
}
/// Create a font with the headline text style.
public static var headline: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .headline).pointSize)
}
/// Create a font with the subheadline text style.
public static var subheadline: Font {
return Font.custom("OpenSans-Light", size: UIFont.preferredFont(forTextStyle: .subheadline).pointSize)
}
/// Create a font with the body text style.
public static var body: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .body).pointSize)
}
/// Create a font with the callout text style.
public static var callout: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .callout).pointSize)
}
/// Create a font with the footnote text style.
public static var footnote: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .footnote).pointSize)
}
/// Create a font with the caption text style.
public static var caption: Font {
return Font.custom("OpenSans-Regular", size: UIFont.preferredFont(forTextStyle: .caption1).pointSize)
}
public static func system(size: CGFloat, weight: Font.Weight = .regular, design: Font.Design = .default) -> Font {
var font = "OpenSans-Regular"
switch weight {
case .bold: font = "OpenSans-Bold"
case .heavy: font = "OpenSans-ExtraBold"
case .light: font = "OpenSans-Light"
case .medium: font = "OpenSans-Regular"
case .semibold: font = "OpenSans-SemiBold"
case .thin: font = "OpenSans-Light"
case .ultraLight: font = "OpenSans-Light"
default: break
}
return Font.custom(font, size: size)
}
}
答案 1 :(得分:2)
这是一种结合了其中一些方法的方法,特别是 Justin 的方法和 Brady Murphy 的 Medium 文章。这个想法是创建一个字体管理器,可以将其合并到 Font
扩展中以覆盖默认值。我希望有一个编译器指令可以跳过预览的字体扩展。这仍会中断预览。
这个函数使用一次将获取实际的字体名称:
// put the following into the .onAppear of a top level view or App.init
func getCustomFontNames() {
// get each of the font families
for family in UIFont.familyNames.sorted() {
let names = UIFont.fontNames(forFamilyName: family)
// print array of names
print("Family: \(family) Font names: \(names)")
}
}
可以创建默认字体的字体管理器,但也允许通过直接调用字体系列结构来使用多种字体。
typealias FMgr = FontManager
struct FontManager {
// dynamic font sizes
struct dynamicSize {
public static var largeTitle : CGFloat = UIFont.preferredFont(forTextStyle: .largeTitle).pointSize
public static var title : CGFloat = UIFont.preferredFont(forTextStyle: .title1).pointSize
// repeat for all the dynamic sizes
}
// App Supplied Fonts
struct Quicksand {
static let familyRoot = "Quicksand"
// weights
static let heavy = bold
static let bold = "\(familyRoot)-Bold"
static let semibold = "\(familyRoot)-SemiBold"
static let medium = regular
static let regular = "\(familyRoot)-Regular"
static let thin = light
static let light = "\(familyRoot)-Light"
static let ultralight = light
// dynamic sizes
static let largeTitle : Font = Font.custom(FMgr.Quicksand.bold, size: FMgr.dynamicSize.largeTitle)
// repeat for other sizes
}
// structs for other fonts
}
extension Font {
public static var largeTitle = FMgr.Quicksand.largeTitle
// repeat for the rest of the dynamic sizes
}
答案 2 :(得分:1)
我当前的方法是重新创建自己的字体工厂:
struct MyFont {
static let title = Font.custom("SourceSansPro-Bold", size: 24.0)
static let body = Font.custom("SourceSansPro-Regular", size: 12.0)
}
,然后使用例如MyFont.title
代替Font.title
答案 3 :(得分:0)
这是我的方法:
struct Fonts {
static func oswaldRegular(size:CGFloat) -> Font{
return Font.custom("Oswald-Regular", size: size)
}
static func oswaldLight(size:CGFloat) -> Font{
return Font.custom("Oswald-Light", size: size)
}
static func oswaldBold(size:CGFloat) -> Font{
return Font.custom("Oswald-Bold", size: size)
}
}