Add showcase for XML types

Reviewed By: oprisnik

Differential Revision: D64259734

samples/showcase/src/main/java/com/facebook/fresco/samples/showcase/ExampleDatabase.kt

@@ -17,6 +17,7 @@ import com.facebook.fresco.samples.showcase.imageformat.override.ImageFormatOver
 import com.facebook.fresco.samples.showcase.imageformat.pjpeg.ImageFormatProgressiveJpegFragment
 import com.facebook.fresco.samples.showcase.imageformat.svg.ImageFormatSvgFragment
 import com.facebook.fresco.samples.showcase.imageformat.webp.ImageFormatWebpFragment
+import com.facebook.fresco.samples.showcase.imageformat.xml.ImageFormatXmlFragment
 import com.facebook.fresco.samples.showcase.imagepipeline.*
 import com.facebook.fresco.samples.showcase.misc.WelcomeFragment
 import com.facebook.fresco.samples.showcase.settings.SettingsFragment
@@ -56,7 +57,9 @@ object ExampleDatabase {
                   },
                   ExampleItem("Partial Image Loading") { PartialRequestFragment() },
                   ExampleItem("Platform Bitmap Factory") { ImagePipelineBitmapFactoryFragment() },
-                  ExampleItem("Region Decoding") { ImagePipelineRegionDecodingFragment() })),
+                  ExampleItem("Region Decoding") { ImagePipelineRegionDecodingFragment() },
+              ),
+          ),
           ExampleCategory(
               "Image Formats",
               listOf(
@@ -67,7 +70,10 @@ object ExampleDatabase {
                   ExampleItem("SVG") { ImageFormatSvgFragment() },
                   ExampleItem("Keyframes") { ImageFormatKeyframesFragment() },
                   ExampleItem("Decoder Override") { ImageFormatOverrideExample() },
-                  ExampleItem("Data URI") { ImageFormatDataUriFragment() })),
+                  ExampleItem("Data URI") { ImageFormatDataUriFragment() },
+                  ExampleItem("XML") { ImageFormatXmlFragment() },
+              ),
+          ),
           ExampleCategory(
               "Fresco Vito",
               listOf(

samples/showcase/src/main/java/com/facebook/fresco/samples/showcase/ShowcaseApplication.kt

@@ -88,6 +88,7 @@ class ShowcaseApplication : Application() {
 
     imagePipelineConfigBuilder
         .experiment()
+        .setBinaryXmlEnabled(true)
         .setBitmapPrepareToDraw(true, 0, Integer.MAX_VALUE, true)
         .setDownsampleIfLargeBitmap(true)
 

samples/showcase/src/main/java/com/facebook/fresco/samples/showcase/imageformat/xml/ImageFormatXmlFragment.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.fresco.samples.showcase.imageformat.xml;
+
+import android.net.Uri;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.ImageView;
+import android.widget.Spinner;
+import android.widget.TextView;
+import androidx.annotation.DrawableRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import com.facebook.common.util.UriUtil;
+import com.facebook.fresco.samples.showcase.BaseShowcaseFragment;
+import com.facebook.fresco.samples.showcase.R;
+import com.facebook.fresco.vito.options.ImageOptions;
+import com.facebook.fresco.vito.view.VitoView;
+
+/** This fragment displays different XML images. */
+public class ImageFormatXmlFragment extends BaseShowcaseFragment {
+
+  private static final String CALLER_CONTEXT = "ImageFormatXmlFragment";
+
+  private ImageView mImageView;
+
+  @Nullable
+  @Override
+  public View onCreateView(
+      LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+    return inflater.inflate(R.layout.fragment_format_xml, container, false);
+  }
+
+  @Override
+  public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
+    mImageView = view.findViewById(R.id.image);
+
+    final Spinner spinner = view.findViewById(R.id.spinner);
+    final Entry[] entries =
+        new Entry[] {
+          new Entry("Vector", fromResourceId(R.drawable.xml_vector)),
+          new Entry("Nine patch", fromResourceId(R.drawable.xml_nine_patch)),
+          new Entry("Layer list", fromResourceId(R.drawable.xml_layer_list)),
+          new Entry("Level list", fromResourceId(R.drawable.xml_level_list)),
+          new Entry("State list", fromResourceId(R.drawable.xml_state_list)),
+          new Entry("Bitmap", fromResourceId(R.drawable.xml_bitmap)),
+        };
+    spinner.setAdapter(new SimpleUriListAdapter(entries));
+    spinner.setOnItemSelectedListener(
+        new AdapterView.OnItemSelectedListener() {
+          @Override
+          public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+            final Entry spinnerEntry = entries[spinner.getSelectedItemPosition()];
+            setImageUri(spinnerEntry.uri);
+          }
+
+          @Override
+          public void onNothingSelected(AdapterView<?> parent) {}
+        });
+    spinner.setSelection(0);
+  }
+
+  private void setImageUri(Uri uri) {
+    VitoView.show(uri, ImageOptions.create().build(), CALLER_CONTEXT, mImageView);
+  }
+
+  private Uri fromResourceId(@DrawableRes int resourceId) {
+    return UriUtil.getUriForResourceId(resourceId);
+  }
+
+  private class SimpleUriListAdapter extends BaseAdapter {
+    final Entry[] mEntries;
+
+    SimpleUriListAdapter(Entry[] entries) {
+      this.mEntries = entries;
+    }
+
+    @Override
+    public int getCount() {
+      return mEntries.length;
+    }
+
+    @Override
+    public Entry getItem(int position) {
+      return mEntries[position];
+    }
+
+    @Override
+    public long getItemId(int position) {
+      return position;
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+      final LayoutInflater layoutInflater = getLayoutInflater(null);
+      final View view =
+          convertView != null
+              ? convertView
+              : layoutInflater.inflate(
+                  android.R.layout.simple_spinner_dropdown_item, parent, false);
+      final TextView textView = (TextView) view.findViewById(android.R.id.text1);
+      textView.setText(mEntries[position].label);
+      return view;
+    }
+  }
+
+  private static class Entry {
+    final @NonNull String label;
+    final Uri uri;
+
+    private Entry(@NonNull String label, Uri uri) {
+      this.label = label;
+      this.uri = uri;
+    }
+  }
+}

samples/showcase/src/main/res/drawable/xml_bitmap.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:antialias="true"
+    android:src="@drawable/logo"
+    />

samples/showcase/src/main/res/drawable/xml_layer_list.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:width="@dimen/drawee_height_medium"
+        android:height="@dimen/drawee_height_medium"
+        android:drawable="@drawable/ic_error_black_96dp"
+        android:gravity="center"
+        />
+
+    <item
+        android:width="@dimen/drawee_height_medium"
+        android:height="@dimen/drawee_height_medium"
+        android:drawable="@drawable/xml_vector"
+        android:gravity="center"
+        />
+
+    <item
+        android:width="@dimen/drawee_height_medium"
+        android:height="@dimen/drawee_height_medium"
+        android:drawable="@drawable/ic_edit"
+        android:gravity="center"
+        />
+
+</layer-list>

samples/showcase/src/main/res/drawable/xml_level_list.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<level-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:drawable="@drawable/ic_retry_black_48dp"
+        android:minLevel="1"
+        />
+    <item
+        android:drawable="@drawable/xml_vector"
+        android:maxLevel="1"
+        android:minLevel="0"
+        />
+</level-list>

samples/showcase/src/main/res/drawable/xml_nine_patch.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<nine-patch xmlns:android="http://schemas.android.com/apk/res/android"
+    android:dither="true"
+    android:src="@drawable/ninepatch"
+    />

samples/showcase/src/main/res/drawable/xml_state_list.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/ic_arrow_left" android:state_checked="false" android:state_pressed="false" />
+    <item android:drawable="@drawable/ic_arrow_right" android:state_checked="true" android:state_pressed="false" />
+</selector>

samples/showcase/src/main/res/drawable/xml_vector.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="#a4c639"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    >
+    <path
+        android:fillColor="#000"
+        android:pathData="M17.6,11.48 L19.44,8.3a0.63,0.63 0,0 0,-1.09 -0.63l-1.88,3.24a11.43,11.43 0,0 0,-8.94 0L5.65,7.67a0.63,0.63 0,0 0,-1.09 0.63L6.4,11.48A10.81,10.81 0,0 0,1 20L23,20A10.81,10.81 0,0 0,17.6 11.48ZM7,17.25A1.25,1.25 0,1 1,8.25 16,1.25 1.25,0 0,1 7,17.25ZM17,17.25A1.25,1.25 0,1 1,18.25 16,1.25 1.25,0 0,1 17,17.25Z"
+        />
+</vector>

samples/showcase/src/main/res/layout/fragment_format_xml.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".imageformat.xml.ImageFormatXmlFragment"
+    >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_horizontal"
+        android:orientation="vertical"
+        >
+
+        <Spinner
+            android:id="@+id/spinner"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/margin_medium"
+            />
+
+        <ImageView
+            android:id="@+id/image"
+            android:layout_width="@dimen/drawee_width_medium"
+            android:layout_height="@dimen/drawee_height_medium"
+            android:layout_marginTop="@dimen/margin_medium"
+            android:importantForAccessibility="no"
+            />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/margin_medium"
+            android:text="@string/format_xml_help"
+            android:textAppearance="?android:attr/textAppearanceSmall"
+            />
+    </LinearLayout>
+</ScrollView>

samples/showcase/src/main/res/values/strings.xml

@@ -112,6 +112,8 @@
 
   <string name="format_datauri_help">Images can also be provided by data URIs such as the one below:</string>
 
+  <string name="format_xml_help" description="Helper text for xml example">This example showcases different binary XML file types. Select different binary XML types from the spinner.</string>
+
   <string name="vito_litho_image_options_config_help_source">Configure the image source to be displayed</string>
   <string name="vito_litho_image_options_config_help_options">Configure image options to change the image\'s appearance</string>
   <string name="vito_litho_image_options_config_switch_auto_play_animations">Auto play animations</string>