DWRITE_FONT_METRICS1 structure

The DWRITE_FONT_METRICS1 structure specifies the metrics that are applicable to all glyphs within the font face.

Syntax


struct DWRITE_FONT_METRICS1 {
  INT16 glyphBoxLeft;
  INT16 glyphBoxTop;
  INT16 glyphBoxRight;
  INT16 glyphBoxBottom;
  INT16 subscriptPositionX;
  INT16 subscriptPositionY;
  INT16 subscriptSizeX;
  INT16 subscriptSizeY;
  INT16 superscriptPositionX;
  INT16 superscriptPositionY;
  INT16 superscriptSizeX;
  INT16 superscriptSizeY;
  BOOL  hasTypographicMetrics;
};

Members

glyphBoxLeft

Left edge of accumulated bounding blackbox of all glyphs in the font.

glyphBoxTop

Top edge of accumulated bounding blackbox of all glyphs in the font.

glyphBoxRight

Right edge of accumulated bounding blackbox of all glyphs in the font.

glyphBoxBottom

Bottom edge of accumulated bounding blackbox of all glyphs in the font.

subscriptPositionX

Horizontal position of the subscript relative to the baseline origin. This is typically negative (to the left) in italic and oblique fonts, and zero in regular fonts.

subscriptPositionY

Vertical position of the subscript relative to the baseline. This is typically negative.

subscriptSizeX

Horizontal size of the subscript em box in design units, used to scale the simulated subscript relative to the full em box size. This is the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client uses its own policy.

subscriptSizeY

Vertical size of the subscript em box in design units, used to scale the simulated subscript relative to the full em box size. This is the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client uses its own policy.

superscriptPositionX

Horizontal position of the superscript relative to the baseline origin. This is typically positive (to the right) in italic and oblique fonts, and zero in regular fonts.

superscriptPositionY

Vertical position of the superscript relative to the baseline. This is typically positive.

superscriptSizeX

Horizontal size of the superscript em box in design units, used to scale the simulated superscript relative to the full em box size. This is the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client should use its own policy.

superscriptSizeY

Vertical size of the superscript em box in design units, used to scale the simulated superscript relative to the full em box size. This is the numerator of the scaling ratio where denominator is the design units per em. If this member is zero, the font does not specify a scale factor, and the client should use its own policy.

hasTypographicMetrics

A Boolean value that indicates that the ascent, descent, and lineGap are based on newer 'typographic' values in the font, rather than legacy values.

Remarks

DWRITE_FONT_METRICS1 inherits from DWRITE_FONT_METRICS:


struct DWRITE_FONT_METRICS1 : public DWRITE_FONT_METRICS
{
...
};

Requirements

Minimum supported client

Windows 8 and Platform Update for Windows 7 [desktop apps only]

Minimum supported server

Windows Server 2012 and Platform Update for Windows Server 2008 R2 [desktop apps only]

Minimum supported phone

Windows Phone 8.1 [Windows Phone Silverlight 8.1 and Windows Runtime apps]

Header

Dwrite_1.h

See also

IDWriteFont1::GetMetrics
IDWriteFontFace1::GetMetrics
IDWriteFontFace1::GetGdiCompatibleMetrics

 

 

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