本文整理汇总了Java中java.awt.AlphaComposite.DST_ATOP属性的典型用法代码示例。如果您正苦于以下问题：Java AlphaComposite.DST_ATOP属性的具体用法？Java AlphaComposite.DST_ATOP怎么用？Java AlphaComposite.DST_ATOP使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类java.awt.AlphaComposite的用法示例。
在下文中一共展示了AlphaComposite.DST_ATOP属性的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: forAlphaComposite
/**
* Return a CompositeType object for the specified AlphaComposite
* rule.
*/
public static CompositeType forAlphaComposite(AlphaComposite ac) {
switch (ac.getRule()) {
case AlphaComposite.CLEAR:
return Clear;
case AlphaComposite.SRC:
if (ac.getAlpha() >= 1.0f) {
return SrcNoEa;
} else {
return Src;
}
case AlphaComposite.DST:
return Dst;
case AlphaComposite.SRC_OVER:
if (ac.getAlpha() >= 1.0f) {
return SrcOverNoEa;
} else {
return SrcOver;
}
case AlphaComposite.DST_OVER:
return DstOver;
case AlphaComposite.SRC_IN:
return SrcIn;
case AlphaComposite.DST_IN:
return DstIn;
case AlphaComposite.SRC_OUT:
return SrcOut;
case AlphaComposite.DST_OUT:
return DstOut;
case AlphaComposite.SRC_ATOP:
return SrcAtop;
case AlphaComposite.DST_ATOP:
return DstAtop;
case AlphaComposite.XOR:
return AlphaXor;
default:
throw new InternalError("Unrecognized alpha rule");
}
}
示例2: SunCompositeContext
/**
* Creates a new AlphaCompositeContext.
*
* @param aComp the AlphaComposite object
* @param srcCM the source color model
* @param dstCM the destination color model
*/
public SunCompositeContext(AlphaComposite aComp, ColorModel srcCM,
ColorModel dstCM)
{
composite = aComp;
srcColorModel = srcCM;
dstColorModel = dstCM;
// Determine the blending factors according to the rule in the
// AlphaComposite. For some rules the factors must be determined
// dynamically because they depend on the actual pixel value.
switch (composite.getRule())
{
case AlphaComposite.CLEAR:
fs = 0.F;
fd= 0.F;
break;
case AlphaComposite.DST:
fs = 0.F;
fd= 1.F;
break;
case AlphaComposite.DST_ATOP:
fs = 1.F; // Determined later as 1 - alpha_dst;
fd = 1.F; // Determined later as alpha_src;
break;
case AlphaComposite.DST_IN:
fs = 0.F;
fd = 0.F; // Determined later as alpha_src;
break;
case AlphaComposite.DST_OUT:
fs = 0.F;
fd = 0.F; // Determined later as 1 - alpha_src;
break;
case AlphaComposite.DST_OVER:
fs = 1.F; // Determined later as 1 - alpha_dst.
fd= 1.F;
break;
case AlphaComposite.SRC:
fs = 1.F;
fd= 0.F;
break;
case AlphaComposite.SRC_ATOP:
fs = 1.F; // Determined later as alpha_dst;
fd = 1.F; // Determined later as 1 - alpha_src;
break;
case AlphaComposite.SRC_IN:
fs = 0.F; // Determined later as alpha_dst;
fd = 0.F;
break;
case AlphaComposite.SRC_OUT:
fs = 0.F; // Determined later as 1 - alpha_dst;
fd = 0.F;
break;
case AlphaComposite.SRC_OVER:
fs = 1.F;
fd= 1.F; // Determined later as 1 - alpha_src.
break;
case AlphaComposite.XOR:
fs = 1.F; // Determined later as 1 - alpha_dst.
fd= 1.F; // Determined later as 1 - alpha_src.
break;
default:
throw new AWTError("Illegal AlphaComposite rule");
}
}