本文整理汇总了Java中java.awt.Image.getAccelerationPriority方法的典型用法代码示例。如果您正苦于以下问题：Java Image.getAccelerationPriority方法的具体用法？Java Image.getAccelerationPriority怎么用？Java Image.getAccelerationPriority使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.awt.Image的用法示例。
在下文中一共展示了Image.getAccelerationPriority方法的1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: getSourceSurfaceData
import java.awt.Image; //导入方法依赖的package包/类
/**
* This method is called on a destination SurfaceData to choose
* the best SurfaceData from a source Image for an imaging
* operation, with help from its SurfaceManager.
* The method may determine that the default SurfaceData was
* really the best choice in the first place, or it may decide
* to use a cached surface. Some general decisions about whether
* acceleration is enabled are made by this method, but any
* decision based on the type of the source image is made in
* the makeProxyFor method below when it comes up with the
* appropriate SurfaceDataProxy instance.
* The parameters describe the type of imaging operation being performed.
* <p>
* If a blitProxyKey was supplied by the subclass then it is
* used to potentially override the choice of source SurfaceData.
* The outline of this process is:
* <ol>
* <li> Image pipeline asks destSD to find an appropriate
* srcSD for a given source Image object.
* <li> destSD gets the SurfaceManager of the source Image
* and first retrieves the default SD from it using
* getPrimarySurfaceData()
* <li> destSD uses its "blit proxy key" (if set) to look for
* some cached data stored in the source SurfaceManager
* <li> If the cached data is null then makeProxyFor() is used
* to create some cached data which is stored back in the
* source SurfaceManager under the same key for future uses.
* <li> The cached data will be a SurfaceDataProxy object.
* <li> The SurfaceDataProxy object is then consulted to
* return a replacement SurfaceData object (typically
* a cached copy if appropriate, or the original if not).
* </ol>
*/
public SurfaceData getSourceSurfaceData(Image img,
int txtype,
CompositeType comp,
Color bgColor)
{
SurfaceManager srcMgr = SurfaceManager.getManager(img);
SurfaceData srcData = srcMgr.getPrimarySurfaceData();
if (img.getAccelerationPriority() > 0.0f &&
blitProxyKey != null)
{
SurfaceDataProxy sdp =
(SurfaceDataProxy) srcMgr.getCacheData(blitProxyKey);
if (sdp == null || !sdp.isValid()) {
if (srcData.getState() == State.UNTRACKABLE) {
sdp = SurfaceDataProxy.UNCACHED;
} else {
sdp = makeProxyFor(srcData);
}
srcMgr.setCacheData(blitProxyKey, sdp);
}
srcData = sdp.replaceData(srcData, txtype, comp, bgColor);
}
return srcData;
}