/**
* Starts accessing the native graphics in the underlying OS, when accessing the native graphics
* Codename One shouldn't be used! The native graphics is unclipped and untranslated by default
* and its the responsibility of the caller to clip/translate appropriately.
*
* <p>When finished with the native graphics it is essential to <b>invoke
* endNativeGraphicsAccess</b>
*
* @return an instance of the underlying native graphics object
*/
public Object beginNativeGraphicsAccess() {
if (nativeGraphicsState != null) {
throw new IllegalStateException("beginNativeGraphicsAccess invoked twice in a row");
}
Boolean a = Boolean.FALSE, b = Boolean.FALSE;
if (isAntiAliasedText()) {
b = Boolean.TRUE;
}
if (isAntiAliased()) {
a = Boolean.TRUE;
}
nativeGraphicsState =
new Object[] {
new Integer(getTranslateX()),
new Integer(getTranslateY()),
new Integer(getColor()),
new Integer(getAlpha()),
new Integer(getClipX()),
new Integer(getClipY()),
new Integer(getClipWidth()),
new Integer(getClipHeight()),
a,
b
};
translate(-getTranslateX(), -getTranslateY());
setAlpha(255);
setClip(
0, 0, Display.getInstance().getDisplayWidth(), Display.getInstance().getDisplayHeight());
return nativeGraphics;
}
/** Invoke this to restore Codename One's graphics settings into the native graphics */
public void endNativeGraphicsAccess() {
translate(
((Integer) nativeGraphicsState[0]).intValue(),
((Integer) nativeGraphicsState[1]).intValue());
setColor(((Integer) nativeGraphicsState[2]).intValue());
setAlpha(((Integer) nativeGraphicsState[3]).intValue());
setClip(
((Integer) nativeGraphicsState[4]).intValue(),
((Integer) nativeGraphicsState[5]).intValue(),
((Integer) nativeGraphicsState[6]).intValue(),
((Integer) nativeGraphicsState[7]).intValue());
setAntiAliased(((Boolean) nativeGraphicsState[8]).booleanValue());
setAntiAliasedText(((Boolean) nativeGraphicsState[9]).booleanValue());
nativeGraphicsState = null;
}