public final boolean isAlphaModeEnabled(final Window window) {
if (!window.isDisplayable() || !window.isShowing()) {
throw new IllegalArgumentException(
"window must be displayable and showing. window=" + window);
}
return isAlphaModeSupported();
}
public final void setAlphaModeRatio(final Window window, final float ratio) {
if (!window.isDisplayable() || !window.isShowing()) {
throw new IllegalArgumentException(
"window must be displayable and showing. window=" + window);
}
if (ratio < 0.0f || ratio > 1.0f) {
throw new IllegalArgumentException("ratio must be in [0..1] range. ratio=" + ratio);
}
if (!isAlphaModeSupported() || !isAlphaModeEnabled(window)) {
return;
}
setAlphaMode(window, ratio);
}
public final void setAlphaModeEnabled(final Window window, final boolean state) {
if (!window.isDisplayable() || !window.isShowing()) {
throw new IllegalArgumentException(
"window must be displayable and showing. window=" + window);
}
}