in drawee/src/main/java/com/facebook/drawee/generic/GenericDraweeHierarchyInflater.java [274:300]
private static ScaleType getScaleTypeFromXml(TypedArray gdhAttrs, int attrId) {
switch (gdhAttrs.getInt(attrId, -2)) {
case -1: // none
return null;
case 0: // fitXY
return ScaleType.FIT_XY;
case 1: // fitStart
return ScaleType.FIT_START;
case 2: // fitCenter
return ScaleType.FIT_CENTER;
case 3: // fitEnd
return ScaleType.FIT_END;
case 4: // center
return ScaleType.CENTER;
case 5: // centerInside
return ScaleType.CENTER_INSIDE;
case 6: // centerCrop
return ScaleType.CENTER_CROP;
case 7: // focusCrop
return ScaleType.FOCUS_CROP;
case 8: // fitBottomStart
return ScaleType.FIT_BOTTOM_START;
default:
// this method is supposed to be called only when XML attribute is specified.
throw new RuntimeException("XML attribute not specified!");
}
}