File	Doc	Category	Size	Date	Package
LinearGradientPaintDef.java	API Doc	phoneME MR2 API (J2ME)	7584	Wed May 02 18:00:34 BST 2007	com.sun.perseus.j2d

LinearGradientPaintDef

• java.lang.Object

Fields Summary
public static final int	CYCLE_NONE
public static final int	CYCLE_REPEAT
public static final int	CYCLE_REFLECT
private com.sun.pisces.Transform6	IDENTITY
float	x0 The gradient starting point along the x-axis
float	y0 The gradient starting point along the y-axis
float	x1 The gradient end point along the x-axis
float	y1 The gradient end point along the y-axis.
float[]	fractions The array of stop values.
int[]	frac The array of stop values, as fixed point values.
int[]	rgba The array of ARGB color values.
int[]	lrgba The last used rgba array, accounting for operation opacity.
int	lastPaintOpacity The last paintOpacity.
int	cycleMethod One of the cycle methods (CYCLE_NONE, CYCLE_REPEAT, CYCLE_REFLECT
protected boolean	isObjectBBox Set to true if this gradient is in objectBoundingBox space.
protected Transform	gradientTransform An additional transform from the gradient space. This corresponds to a SVG gradientTransform attribute.

Constructors Summary

public LinearGradientPaintDef(float x0, float y0, float x1, float y1, float[] fractions, int[] rgba, int cycleMethod, boolean isObjectBBox, Transform gradientTransform) Constructs an LinearGradientPaint. param x0 the gradient starting point along the x-axis param y0 the gradient starting point along the y-axis param x1 the gradient end point along the x-axis param y1 the gradient end point along the y-axis. param fractions the array of stop values. param rgba the array of ARGB color values param cycleMethod one of the cycle methods (CYCLE_NONE, CYCLE_REPEAT, CYCLE_REFLECT param isObjectBBox if set to true, the RenderGraphic's current paintTarget object bounding box should be used to append and additional transform to the gradientTransform. The objectBoundingBox transform is appended to the right of the gradientTransform. param gradientTransform an additional transform to add between the device coordinate space and the gradient's coordinate space. this.x0 = x0; this.y0 = y0; this.x1 = x1; this.y1 = y1; this.fractions = fractions; this.rgba = rgba; this.cycleMethod = cycleMethod; this.isObjectBBox = isObjectBBox; this.gradientTransform = gradientTransform;

Methods Summary

public void

setPaint(PiscesRenderGraphics rg, com.sun.pisces.PiscesRenderer pr, int paintOpacity) Sets the paint on a PiscesRender. param rg the RenderGraphics on requesting the paint to be set. param renderer the PiscesRender on which to set the paint. param paintOpacity additional paint opacity. // First, lazilly compute the fractions in fixed point. if (frac == null) { frac = new int[fractions.length]; for (int i = 0; i < fractions.length; i++) { frac[i] = (int) (fractions[i] * 65536); } } // Now, lazilly compute the offset colors accounting for the current // paint opacity. int[] c = rgba; if (paintOpacity != 255) { c = lrgba; if (paintOpacity != lastPaintOpacity) { if (lrgba == null) { lrgba = new int[rgba.length]; } int a = 0; for (int i = 0; i < rgba.length; i++) { lrgba[i] = (rgba[i] & 0x00ffffff); a = (paintOpacity * (0xff & (rgba[i] >> 24)) / 255); lrgba[i] |= (a << 24); } lastPaintOpacity = paintOpacity; } } // Finally, compute the paint transform. // Start with the paintTarget's user space coordinate system. Transform txf = null; if (rg.paintTransform != null) { txf = new Transform(rg.paintTransform); } else { txf = new Transform(rg.transform.m00 / 65536f, rg.transform.m10 / 65536f, rg.transform.m01 / 65536f, rg.transform.m11 / 65536f, rg.transform.m02 / 65536f, rg.transform.m12 / 65536f); } // Append the objectBoundingBox space to user space transform. if (isObjectBBox) { SVGRect bbox = rg.paintTarget.getBBox(); txf.mTranslate(bbox.getX(), bbox.getY()); txf.mScale(bbox.getWidth(), bbox.getHeight()); } // Now, append the gradient transform. if (gradientTransform != null) { txf.mMultiply(gradientTransform); } Transform6 t = new Transform6(); t.m00 = (int) (txf.m0 * 65536); t.m10 = (int) (txf.m1 * 65536); t.m01 = (int) (txf.m2 * 65536); t.m11 = (int) (txf.m3 * 65536); t.m02 = (int) (txf.m4 * 65536); t.m12 = (int) (txf.m5 * 65536); pr.setLinearGradient((int) (x0 * 65536), (int) (y0 * 65536), (int) (x1 * 65536), (int) (y1 * 65536), frac, c, cycleMethod, t);