com.facebook.buck.android

Class ResourceFilters

java.lang.Object

com.facebook.buck.android.ResourceFilters

public class ResourceFilters
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ResourceFilters.Density Represents the names and values of valid densities for resources as defined in http://developer.android.com/guide/topics/resources/providing-resources.html#DensityQualifier
static class	ResourceFilters.Qualifiers

Field Summary

Fields

Modifier and Type	Field and Description
static com.google.common.collect.ImmutableSet<String>	SUPPORTED_RESOURCE_DIRECTORIES The set of supported directories in resource folders.

Method Summary

Modifier and Type	Method and Description
static java.util.function.Predicate<Path>	createDensityFilter(ProjectFilesystem filesystem, Set<ResourceFilters.Density> targetDensities) Given a set of target densities, returns a Predicate that fails for any non-drawable resource of a different density.
static java.util.function.Predicate<Path>	createImageDensityFilter(Collection<Path> candidates, Set<ResourceFilters.Density> targetDensities, boolean canDownscale) Given a list of paths of available drawables, and a target screen density, returns a Predicate that fails for drawables of a different density, whenever they can be safely removed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SUPPORTED_RESOURCE_DIRECTORIES

public static final com.google.common.collect.ImmutableSet<String> SUPPORTED_RESOURCE_DIRECTORIES

The set of supported directories in resource folders. This is defined in http://developer.android.com/guide/topics/resources/providing-resources.html#table1

Method Detail

createImageDensityFilter

public static java.util.function.Predicate<Path> createImageDensityFilter(Collection<Path> candidates,
                                                                          Set<ResourceFilters.Density> targetDensities,
                                                                          boolean canDownscale)

Given a list of paths of available drawables, and a target screen density, returns a Predicate that fails for drawables of a different density, whenever they can be safely removed.

Parameters:

candidates - list of available drawables

targetDensities - set of e.g. "mdpi", "ldpi" etc.

canDownscale - if no exact match is available, retain the highest quality

Returns:

a predicate as above

createDensityFilter

public static java.util.function.Predicate<Path> createDensityFilter(ProjectFilesystem filesystem,
                                                                     Set<ResourceFilters.Density> targetDensities)

Given a set of target densities, returns a Predicate that fails for any non-drawable resource of a different density. Special consideration exists for the default density (ResourceFilters.Density.NO_QUALIFIER when the target does not exists.