#Offset father of 4 dbr.ee series#

If any JSTF suggestion at any priority level modifies a GSUB or GPOS lookup that was previously applied to the glyph string, then the text processing client must apply the JSTF suggestion to an unmodified version of the glyph string.ДЄ FeatureVariations table may be used in either the GSUB or GPOS table to substitute the lookups triggered by a given feature with an alternate set of lookups based on certain conditions. This continues until the line length meets the justification requirements. If the line still is not the correct length, the client processes the next suggestion in ascending order of priority. Starting with the lowest-numbered suggestion, the client enables or disables the lookups specified in the JSTF table, reassembles the lookups in the LookupList order, and applies them to each glyph in the string one after another. A client may use the extender glyphs in addition to the justification suggestions.ДЄ client begins justifying a line of text only after implementing all selected GSUB and GPOS features for the string. Low-numbered (high-priority) suggestions correspond to вЂњleast badвЂќ options.Д®ach script also may supply a list of extender glyphs, such as kashidas in Arabic. The font developer prioritizes suggestions based on how they affect the appearance and function of the text line, and the client applies the suggestions in that order. In addition, each suggestion can include a set of dedicated justification lookups with maximum adjustment values to extend or shrink the amount of space. Each suggestion consists of a list of GSUB or GPOS LookupList indices to lookups that may be enabled or disabled to add or remove space in the line of text. High-level organization of JSTF tableДЄ JstfLangSys table contains a list of justification suggestions. A justification language system table stores the justification data for each language system.ДЇigure 6c.A default justification language system table (JstfLangSys) defines script-specific data that applies to the entire script in the absence of any language-specific information.Each record contains a ScriptTag and an offset to a JstfScript table that contains script and language-specific data: The JSTF table begins with a header that lists scripts in an array of JstfScriptRecords (see Figure 6c). The JSTF table organizes data by script and language system, as do the GSUB and GPOS tables. Justification actions may apply to both vertical and horizonal text. Each suggestion lists the particular actions that the client can use to adjust the line of text. The font designer or developer defines JSTF data as prioritized suggestions. JSTF shortens the top line of this example by using the вЂњffiвЂќ ligature Other options include repositioning the individual glyphs in the line, expanding the space between specific pairs of glyphs, and decreasing the spacing within particular glyph sequences. Font-specific positioning changes can be applied to particular glyphs in a text line that combines two or more fonts. To disguise spacing inconsistencies so they wonвЂ™t disrupt the flow of text for a reader, the font developer can use the JSTF table to enable or disable individual glyph substitution and positioning actions that apply to specific scripts, language systems, and glyphs in the font.ДЇor instance, a ligature glyph can replace multiple glyphs, shortening the line of text with an unobtrusive, localized adjustment (see Figure 6b). If these changes arenвЂ™t enough or look distracting, the client might hyphenate the word at the end of the line or adjust the space between glyphs in one or more lines. Typically, the client will begin by expanding or compressing the space between words.

#Offset father of 4 dbr.ee series#

To offset these effects, text-processing clients have used justification algorithms that redistribute the space with a series of glyph spacing adjustments that progress from least to most obvious. Whether removing space to fit more characters in the line or adding more space to spread the characters, justification can produce large gaps between words, cramped or extended glyph spacing, uneven line break patterns, and other jarring visual effects. When justifying text, the text-processing client distributes the characters in each line to completely fill the specified line length. Text-processing clients now have more options to expand or shrink word and glyph spacing so text fills the specified line length. The Justification table (JSTF) provides font developers with additional control over glyph substitution and positioning in justified text.