android的Paint.java中几个枚举的定义和使用

android的Paint.java中几个枚举的定义和使用

/**
* The Style specifies if the primitive being drawn is filled,
* stroked, or both (in the same color). The default is FILL.
*/
public enum Style {
/**
* Geometry and text drawn with this style will be filled, ignoring all
* stroke-related settings in the paint.
*/
FILL            (0),
/**
* Geometry and text drawn with this style will be stroked, respecting
* the stroke-related fields on the paint.
*/
STROKE          (1),
/**
* Geometry and text drawn with this style will be both filled and
* stroked at the same time, respecting the stroke-related fields on
* the paint.
*/
FILL_AND_STROKE (2);

Style(int nativeInt) {
this.nativeInt = nativeInt;
}
final int nativeInt;
}

/**
* The Cap specifies the treatment for the beginning and ending of
* stroked lines and paths. The default is BUTT.
*/
public enum Cap {
/**
* The stroke ends with the path, and does not project beyond it.
*/
BUTT    (0),
/**
* The stroke projects out as a semicircle, with the center at the
* end of the path.
*/
ROUND   (1),
/**
* The stroke projects out as a square, with the center at the end
* of the path.
*/
SQUARE  (2);

private Cap(int nativeInt) {
this.nativeInt = nativeInt;
}
final int nativeInt;
}

/**
* The Join specifies the treatment where lines and curve segments
* join on a stroked path. The default is MITER.
*/
public enum Join {
/**
* The outer edges of a join meet at a sharp angle
*/
MITER   (0),
/**
* The outer edges of a join meet in a circular arc.
*/
ROUND   (1),
/**
* The outer edges of a join meet with a straight line
*/
BEVEL   (2);

private Join(int nativeInt) {
this.nativeInt = nativeInt;
}
final int nativeInt;
}

/**
* Align specifies how drawText aligns its text relative to the
* [x,y] coordinates. The default is LEFT.
*/
public enum Align {
/**
* The text is drawn to the right of the x,y origin
*/
LEFT    (0),
/**
* The text is drawn centered horizontally on the x,y origin
*/
CENTER  (1),
/**
* The text is drawn to the left of the x,y origin
*/
RIGHT   (2);

private Align(int nativeInt) {
this.nativeInt = nativeInt;
}
final int nativeInt;
}

private static final Style[] sStyleArray = {
Style.FILL, Style.STROKE, Style.FILL_AND_STROKE
};
private static final Cap[] sCapArray = {
Cap.BUTT, Cap.ROUND, Cap.SQUARE
};
private static final Join[] sJoinArray = {
Join.MITER, Join.ROUND, Join.BEVEL
};
private static final Align[] sAlignArray = {
Align.LEFT, Align.CENTER, Align.RIGHT
};