Instance Method

setAllowsFontSubpixelPositioning(_:)

Sets whether or not to allow subpixel positioning for a graphics context.

Declaration

func setAllowsFontSubpixelPositioning(_ allowsFontSubpixelPositioning: Bool)

Parameters

allowsFontSubpixelPositioning

A Boolean value that specifies whether subpixel positioning of glyphs is allowed in the specified context.

Discussion

Sub-pixel positioning is used by the graphics context if it is allowed, enabled, and if the font itself is antialiased when drawn. For information on how to enable subpixel positioning, see the setShouldSubpixelPositionFonts(_:) function.

This parameter is not part of the graphics state.

See Also

Drawing Text

var textMatrix: CGAffineTransform

Returns the current text matrix.

var textPosition: CGPoint

Returns the location at which text is drawn.

func selectFont(name: UnsafePointer<Int8>, size: CGFloat, textEncoding: CGTextEncoding)

Sets the font and font size in a graphics context.

Deprecated
func setCharacterSpacing(CGFloat)

Sets the current character spacing.

func setFont(CGFont)

Sets the platform font in a graphics context.

func setFontSize(CGFloat)

Sets the current font size.

func setTextDrawingMode(CGTextDrawingMode)

Sets the current text drawing mode.

enum CGTextDrawingMode

Modes for rendering text.

func setAllowsFontSmoothing(Bool)

Sets whether or not to allow font smoothing for a graphics context.

func setAllowsFontSubpixelQuantization(Bool)

Sets whether or not to allow subpixel quantization for a graphics context.

func setShouldSmoothFonts(Bool)

Enables or disables font smoothing in a graphics context.

func setShouldSubpixelPositionFonts(Bool)

Enables or disables subpixel positioning in a graphics context.

func setShouldSubpixelQuantizeFonts(Bool)

Enables or disables subpixel quantization in a graphics context.

func showGlyphs(g: UnsafePointer<CGGlyph>?, count: Int)

Displays an array of glyphs at the current text position.

Deprecated
func showGlyphs([CGGlyph], at: [CGPoint])

Draws a set of glyphs at a set of corresponding positions.

func showGlyphsAtPoint(x: CGFloat, y: CGFloat, glyphs: UnsafePointer<CGGlyph>?, count: Int)

Displays an array of glyphs at a position you specify.

Deprecated
func showText(string: UnsafePointer<Int8>, length: Int)

Displays a character array at the current text position, a point specified by the current text matrix.

Deprecated
func showTextAtPoint(x: CGFloat, y: CGFloat, string: UnsafePointer<Int8>, length: Int)

Displays a character string at a position you specify.

Deprecated

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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