Class GlyphJustificationInfo

public final class GlyphJustificationInfo
extends Object

The GlyphJustificationInfo class represents information about the justification properties of a glyph. A glyph is the visual representation of one or more characters. Many different glyphs can be used to represent a single character or combination of characters. The four justification properties represented by GlyphJustificationInfo are weight, priority, absorb and limit.

Weight is the overall 'weight' of the glyph in the line. Generally it is proportional to the size of the font. Glyphs with larger weight are allocated a correspondingly larger amount of the change in space.

Priority determines the justification phase in which this glyph is used. All glyphs of the same priority are examined before glyphs of the next priority. If all the change in space can be allocated to these glyphs without exceeding their limits, then glyphs of the next priority are not examined. There are four priorities, kashida, whitespace, interchar, and none. KASHIDA is the first priority examined. NONE is the last priority examined.

Absorb determines whether a glyph absorbs all change in space. Within a given priority, some glyphs may absorb all the change in space. If any of these glyphs are present, no glyphs of later priority are examined.

Limit determines the maximum or minimum amount by which the glyph can change. Left and right sides of the glyph can have different limits.

Each GlyphJustificationInfo represents two sets of metrics, which are growing and shrinking. Growing metrics are used when the glyphs on a line are to be spread apart to fit a larger width. Shrinking metrics are used when the glyphs are to be moved together to fit a smaller width.

Fields

PRIORITY_KASHIDA

public static final int PRIORITY_KASHIDA

The highest justification priority.

See Also:

Constant Field Values

PRIORITY_WHITESPACE

public static final int PRIORITY_WHITESPACE

The second highest justification priority.

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Constant Field Values

PRIORITY_INTERCHAR

public static final int PRIORITY_INTERCHAR

The second lowest justification priority.

See Also:

Constant Field Values

PRIORITY_NONE

public static final int PRIORITY_NONE

The lowest justification priority.

See Also:

Constant Field Values

weight

public final float weight

The weight of this glyph.

growPriority

public final int growPriority

The priority level of this glyph as it is growing.

growAbsorb

public final boolean growAbsorb

If true, this glyph absorbs all extra space at this and lower priority levels when it grows.

growLeftLimit

public final float growLeftLimit

The maximum amount by which the left side of this glyph can grow.

growRightLimit

public final float growRightLimit

The maximum amount by which the right side of this glyph can grow.

shrinkPriority

public final int shrinkPriority

The priority level of this glyph as it is shrinking.

shrinkAbsorb

public final boolean shrinkAbsorb

If true,this glyph absorbs all remaining shrinkage at this and lower priority levels as it shrinks.

shrinkLeftLimit

public final float shrinkLeftLimit

The maximum amount by which the left side of this glyph can shrink (a positive number).

shrinkRightLimit

public final float shrinkRightLimit

The maximum amount by which the right side of this glyph can shrink (a positive number).

Constructors

GlyphJustificationInfo

public GlyphJustificationInfo(float weight,
                              boolean growAbsorb,
                              int growPriority,
                              float growLeftLimit,
                              float growRightLimit,
                              boolean shrinkAbsorb,
                              int shrinkPriority,
                              float shrinkLeftLimit,
                              float shrinkRightLimit)

Constructs information about the justification properties of a glyph.

Parameters:

weight - the weight of this glyph when allocating space. Must be non-negative.

growAbsorb - if true this glyph absorbs all extra space at this priority and lower priority levels when it grows

growPriority - the priority level of this glyph when it grows

growLeftLimit - the maximum amount by which the left side of this glyph can grow. Must be non-negative.

growRightLimit - the maximum amount by which the right side of this glyph can grow. Must be non-negative.

shrinkAbsorb - if true, this glyph absorbs all remaining shrinkage at this and lower priority levels when it shrinks

shrinkPriority - the priority level of this glyph when it shrinks

shrinkLeftLimit - the maximum amount by which the left side of this glyph can shrink. Must be non-negative.

shrinkRightLimit - the maximum amount by which the right side of this glyph can shrink. Must be non-negative.