Support for Signal calls.

Merge in RedPhone

// FREEBIE

src/org/thoughtcrime/securesms/contacts/avatars/BitmapContactPhoto.java

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.contacts.avatars;
 
 import android.content.Context;
 import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.widget.ImageView;
 
@@ -26,4 +27,9 @@ public class BitmapContactPhoto implements ContactPhoto {
                           .setScaleType(ImageView.ScaleType.CENTER_CROP)
                           .setOval(true);
   }
+
+  @Override
+  public Drawable asCallCard(Context context) {
+    return new BitmapDrawable(context.getResources(), bitmap);
+  }
 }

src/org/thoughtcrime/securesms/contacts/avatars/ContactPhoto.java

@@ -7,6 +7,6 @@ public interface ContactPhoto {
 
   public Drawable asDrawable(Context context, int color);
   public Drawable asDrawable(Context context, int color, boolean inverted);
-
+  public Drawable asCallCard(Context context);
 
 }

src/org/thoughtcrime/securesms/contacts/avatars/GeneratedContactPhoto.java

@@ -35,4 +35,9 @@ public class GeneratedContactPhoto implements ContactPhoto {
                        .endConfig()
                        .buildRound(String.valueOf(name.charAt(0)), inverted ? Color.WHITE : color);
   }
+
+  @Override
+  public Drawable asCallCard(Context context) {
+    return context.getDrawable(R.drawable.ic_contact_picture);
+  }
 }

src/org/thoughtcrime/securesms/contacts/avatars/ResourceContactPhoto.java

@@ -40,6 +40,11 @@ public class ResourceContactPhoto implements ContactPhoto {
     return new ExpandingLayerDrawable(new Drawable[] {background, foreground});
   }
 
+  @Override
+  public Drawable asCallCard(Context context) {
+    return context.getDrawable(resourceId);
+  }
+
   private static class ExpandingLayerDrawable extends LayerDrawable {
     public ExpandingLayerDrawable(Drawable[] layers) {
       super(layers);

src/org/thoughtcrime/securesms/contacts/avatars/TransparentContactPhoto.java

@@ -5,6 +5,8 @@ import android.graphics.drawable.Drawable;
 
 import com.makeramen.roundedimageview.RoundedDrawable;
 
+import org.thoughtcrime.securesms.R;
+
 public class TransparentContactPhoto implements ContactPhoto {
 
   TransparentContactPhoto() {}
@@ -18,4 +20,9 @@ public class TransparentContactPhoto implements ContactPhoto {
   public Drawable asDrawable(Context context, int color, boolean inverted) {
     return RoundedDrawable.fromDrawable(context.getResources().getDrawable(android.R.color.transparent));
   }
+
+  @Override
+  public Drawable asCallCard(Context context) {
+    return context.getDrawable(R.drawable.ic_contact_picture);
+  }
 }