MeasurableFont

Interface with the common functionality for font measurements between OperatingSystemFont and DrawableFont.

interface MeasurableFont {

bool isMonospace();

int averageWidth();

int height();

int ascent();

int descent();

int stringWidth(const(char)[] s, SimpleWindow window);

}

Members

Functions

ascent int ascent(): The maximum ascent of a glyph above the baseline.
averageWidth int averageWidth(): The average width of glyphs in the font, traditionally equal to the width of the lowercase x. Can be used to estimate bounding boxes, especially if the font isMonospace.
descent int descent(): The maximum descent of a glyph below the baseline. For example, how low the g might go.
height int height(): The height of the bounding box of a line.
isMonospace bool isMonospace(): Returns true if it is a monospace font, meaning each of the glyphs (at least the ascii characters) have matching width and no kerning, so you can determine the display width of some strings by simply multiplying the string width by averageWidth.
stringWidth int stringWidth(const(char)[] s, SimpleWindow window): The display width of the given string, and if you provide a window, it will use it to make the pixel count on screen more accurate too, but this shouldn't generally be necessary.

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History

Added October 24, 2022. The methods were already on OperatingSystemFont before that.

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