/**
* Retrieve a dimensional unit attribute at <var>index</var> for use as an offset in raw pixels.
* This is the same as {@link #getDimension}, except the returned value is converted to integer
* pixels for you. An offset conversion involves simply truncating the base value to an integer.
*
* @param index Index of attribute to retrieve.
* @param defValue Value to return if the attribute is not defined or not a resource.
* @return Attribute dimension value multiplied by the appropriate metric and truncated to integer
* pixels, or defValue if not defined.
* @see #getDimension
* @see #getDimensionPixelSize
*/
public int getDimensionPixelOffset(int index, int defValue) {
index *= AssetManager.STYLE_NUM_ENTRIES;
final int[] data = mData;
final int type = data[index + AssetManager.STYLE_TYPE];
if (type == TypedValue.TYPE_NULL) {
return defValue;
} else if (type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimensionPixelOffset(
data[index + AssetManager.STYLE_DATA], mResources.mMetrics);
}
throw new UnsupportedOperationException(
"Can't convert to dimension: type=0x" + Integer.toHexString(type));
}
@Override
public int getDimensionPixelOffset(int id) throws NotFoundException {
IResourceValue value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
String v = value.getValue();
if (v != null) {
if (ResourceHelper.stringToFloat(v, mTmpValue)
&& mTmpValue.type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimensionPixelOffset(mTmpValue.data, mMetrics);
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return 0;
}