Remove gradient support from api 19.

app/src/main/java/org/thoughtcrime/securesms/components/InputPanel.java

@@ -164,10 +164,9 @@ public class InputPanel extends LinearLayout
                        long id,
                        @NonNull Recipient author,
                        @NonNull CharSequence body,
-                       @NonNull SlideDeck attachments,
+                       @NonNull SlideDeck attachments)
-                       @NonNull Colorizer colorizer)
   {
-    this.quoteView.setQuote(glideRequests, id, author, body, false, attachments, colorizer);
+    this.quoteView.setQuote(glideRequests, id, author, body, false, attachments, null);
 
     int originalHeight = this.quoteView.getVisibility() == VISIBLE ? this.quoteView.getMeasuredHeight()
                                                                    : 0;

app/src/main/java/org/thoughtcrime/securesms/components/QuoteView.java

@@ -26,7 +26,7 @@ import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.components.mention.MentionAnnotation;
-import org.thoughtcrime.securesms.conversation.colors.Colorizer;
+import org.thoughtcrime.securesms.conversation.colors.ChatColors;
 import org.thoughtcrime.securesms.database.model.Mention;
 import org.thoughtcrime.securesms.mms.DecryptableStreamUriLoader.DecryptableUri;
 import org.thoughtcrime.securesms.mms.GlideRequests;
@@ -69,7 +69,6 @@ public class QuoteView extends FrameLayout implements RecipientForeverObserver {
   private int           largeCornerRadius;
   private int           smallCornerRadius;
   private CornerMask    cornerMask;
-  private Colorizer     colorizer;
 
 
   public QuoteView(Context context) {
@@ -157,7 +156,7 @@ public class QuoteView extends FrameLayout implements RecipientForeverObserver {
                        @Nullable CharSequence body,
                        boolean originalMissing,
                        @NonNull SlideDeck attachments,
-                       @NonNull Colorizer colorizer)
+                       @Nullable ChatColors chatColors)
   {
     if (this.author != null) this.author.removeForeverObserver(this);
 
@@ -165,13 +164,18 @@ public class QuoteView extends FrameLayout implements RecipientForeverObserver {
     this.author      = author.live();
     this.body        = body;
     this.attachments = attachments;
-    this.colorizer   = colorizer;
 
     this.author.observeForever(this);
     setQuoteAuthor(author);
     setQuoteText(body, attachments);
     setQuoteAttachment(glideRequests, attachments);
     setQuoteMissingFooter(originalMissing);
+
+    if (Build.VERSION.SDK_INT < 21 && messageType == MESSAGE_TYPE_INCOMING && chatColors != null) {
+      this.setBackgroundColor(chatColors.asSingleColor());
+    } else {
+      this.setBackground(null);
+    }
   }
 
   public void setTopCornerSizes(boolean topLeftLarge, boolean topRightLarge) {

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationActivity.java

@@ -3506,8 +3506,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
                           messageRecord.getDateSent(),
                           author,
                           body,
-                          slideDeck,
+                          slideDeck);
-                          fragment.getColorizer());
 
     } else if (messageRecord.isMms() && !((MmsMessageRecord) messageRecord).getLinkPreviews().isEmpty()) {
       LinkPreview linkPreview = ((MmsMessageRecord) messageRecord).getLinkPreviews().get(0);
@@ -3521,8 +3520,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
                           messageRecord.getDateSent(),
                           author,
                           conversationMessage.getDisplayBody(this),
-                          slideDeck,
+                          slideDeck);
-                          fragment.getColorizer());
     } else {
       SlideDeck slideDeck = messageRecord.isMms() ? ((MmsMessageRecord) messageRecord).getSlideDeck() : new SlideDeck();
 
@@ -3536,8 +3534,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
                           messageRecord.getDateSent(),
                           author,
                           conversationMessage.getDisplayBody(this),
-                          slideDeck,
+                          slideDeck);
-                          fragment.getColorizer());
     }
 
     inputPanel.clickOnComposeInput();

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationItem.java

@@ -80,6 +80,7 @@ import org.thoughtcrime.securesms.components.SharedContactView;
 import org.thoughtcrime.securesms.components.emoji.EmojiTextView;
 import org.thoughtcrime.securesms.components.mention.MentionAnnotation;
 import org.thoughtcrime.securesms.contactshare.Contact;
+import org.thoughtcrime.securesms.conversation.colors.ChatColors;
 import org.thoughtcrime.securesms.conversation.colors.Colorizer;
 import org.thoughtcrime.securesms.database.AttachmentDatabase;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
@@ -316,7 +317,7 @@ public final class ConversationItem extends RelativeLayout implements BindableCo
     setGroupMessageStatus(messageRecord, recipient.get());
     setGroupAuthorColor(messageRecord, hasWallpaper, colorizer);
     setAuthor(messageRecord, previousMessageRecord, nextMessageRecord, groupThread, hasWallpaper);
-    setQuote(messageRecord, previousMessageRecord, nextMessageRecord, groupThread, colorizer);
+    setQuote(messageRecord, previousMessageRecord, nextMessageRecord, groupThread, messageRecord.getRecipient().getChatColors());
     setMessageSpacing(context, messageRecord, previousMessageRecord, nextMessageRecord, groupThread);
     setReactions(messageRecord);
     setFooter(messageRecord, nextMessageRecord, locale, groupThread, hasWallpaper);
@@ -1095,14 +1096,14 @@ public final class ConversationItem extends RelativeLayout implements BindableCo
     }
   }
 
-  private void setQuote(@NonNull MessageRecord current, @NonNull Optional<MessageRecord> previous, @NonNull Optional<MessageRecord> next, boolean isGroupThread, @NonNull Colorizer colorizer) {
+  private void setQuote(@NonNull MessageRecord current, @NonNull Optional<MessageRecord> previous, @NonNull Optional<MessageRecord> next, boolean isGroupThread, @NonNull ChatColors chatColors) {
     if (current.isMms() && !current.isMmsNotification() && ((MediaMmsMessageRecord)current).getQuote() != null) {
       if (quoteView == null) {
         throw new AssertionError();
       }
       Quote quote = ((MediaMmsMessageRecord)current).getQuote();
       //noinspection ConstantConditions
-      quoteView.setQuote(glideRequests, quote.getId(), Recipient.live(quote.getAuthor()).get(), quote.getDisplayText(), quote.isOriginalMissing(), quote.getAttachment(), colorizer);
+      quoteView.setQuote(glideRequests, quote.getId(), Recipient.live(quote.getAuthor()).get(), quote.getDisplayText(), quote.isOriginalMissing(), quote.getAttachment(), chatColors);
       quoteView.setVisibility(View.VISIBLE);
       quoteView.getLayoutParams().width = ViewGroup.LayoutParams.WRAP_CONTENT;
 

app/src/main/java/org/thoughtcrime/securesms/conversation/colors/ChatColors.kt

@@ -7,6 +7,9 @@ import android.graphics.PorterDuff
 import android.graphics.PorterDuffColorFilter
 import android.graphics.drawable.ColorDrawable
 import android.graphics.drawable.Drawable
+import android.graphics.drawable.ShapeDrawable
+import android.graphics.drawable.shapes.OvalShape
+import android.os.Build
 import androidx.annotation.ColorInt
 import com.google.common.base.Objects
 import org.signal.core.util.ColorUtil
@@ -32,18 +35,32 @@ class ChatColors private constructor(
    * Returns the Drawable to render the linear gradient, or null if this ChatColors is a single color.
    */
   val chatBubbleMask: Drawable
-    get() = linearGradient?.let {
+    get() {
-      RotatableGradientDrawable(
+      return when {
-        it.degrees,
+        Build.VERSION.SDK_INT < 21 -> {
-        it.colors,
+          ColorDrawable(Color.TRANSPARENT)
-        it.positions
+        }
-      )
+        linearGradient != null -> {
-    } ?: ColorDrawable(asSingleColor())
+          RotatableGradientDrawable(
+            linearGradient.degrees,
+            linearGradient.colors,
+            linearGradient.positions
+          )
+        }
+        else -> {
+          ColorDrawable(asSingleColor())
+        }
+      }
+    }
 
   /**
    * Returns the ColorFilter to apply to a conversation bubble or other relevant piece of UI.
    */
-  val chatBubbleColorFilter: ColorFilter = PorterDuffColorFilter(Color.TRANSPARENT, PorterDuff.Mode.SRC_IN)
+  val chatBubbleColorFilter: ColorFilter = if (Build.VERSION.SDK_INT >= 21) {
+    PorterDuffColorFilter(Color.TRANSPARENT, PorterDuff.Mode.SRC_IN)
+  } else {
+    PorterDuffColorFilter(asSingleColor(), PorterDuff.Mode.SRC_IN)
+  }
 
   @ColorInt
   fun asSingleColor(): Int {
@@ -94,6 +111,12 @@ class ChatColors private constructor(
   }
 
   fun asCircle(): Drawable {
+    if (Build.VERSION.SDK_INT < 21) {
+      return ShapeDrawable(OvalShape()).apply {
+        paint.color = asSingleColor()
+      }
+    }
+
     val toWrap: Drawable = chatBubbleMask
     val path = Path()
 

app/src/main/java/org/thoughtcrime/securesms/conversation/colors/Colorizer.kt

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.conversation.colors
 
 import android.content.Context
 import android.graphics.Color
+import android.os.Build
 import android.view.View
 import androidx.annotation.ColorInt
 import androidx.core.content.ContextCompat
@@ -64,6 +65,10 @@ class Colorizer(private val colorizerView: ColorizerView) : RecyclerView.OnScrol
   }
 
   fun applyClipPathsToMaskedGradient(recyclerView: RecyclerView) {
+    if (Build.VERSION.SDK_INT < 21) {
+      return
+    }
+
     val layoutManager = recyclerView.layoutManager as LinearLayoutManager
 
     val firstVisibleItemPosition: Int = layoutManager.findFirstVisibleItemPosition()

app/src/main/java/org/thoughtcrime/securesms/conversation/colors/ui/ChatColorSelectionAdapter.kt

@@ -1,7 +1,6 @@
 package org.thoughtcrime.securesms.conversation.colors.ui
 
 import android.content.Context
-import android.graphics.Path
 import android.view.View
 import android.widget.ImageView
 import android.widget.TextView
@@ -9,7 +8,8 @@ import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.conversation.colors.ChatColors
 import org.thoughtcrime.securesms.util.MappingAdapter
 import org.thoughtcrime.securesms.util.MappingViewHolder
-import org.thoughtcrime.securesms.util.customizeOnDraw
+import org.thoughtcrime.securesms.util.ViewUtil
+import org.thoughtcrime.securesms.util.withFixedSize
 
 class ChatColorSelectionAdapter(
   context: Context,
@@ -81,24 +81,8 @@ class ChatColorSelectionAdapter(
         preview.isLongClickable = false
       }
 
-      val mask = model.chatColors.chatBubbleMask
+      val mask = model.chatColors.asCircle()
-      preview.setImageDrawable(
+      preview.setImageDrawable(mask.withFixedSize(ViewUtil.dpToPx(56)))
-        mask.customizeOnDraw { wrapped, canvas ->
-          val circlePath = Path()
-          val bounds = canvas.clipBounds
-          circlePath.addCircle(
-            bounds.width() / 2f,
-            bounds.height() / 2f,
-            bounds.width() / 2f,
-            Path.Direction.CW
-          )
-
-          canvas.save()
-          canvas.clipPath(circlePath)
-          wrapped.draw(canvas)
-          canvas.restore()
-        }
-      )
     }
   }
 

app/src/main/java/org/thoughtcrime/securesms/conversation/colors/ui/custom/CustomChatColorCreatorFragment.kt

@@ -1,5 +1,6 @@
 package org.thoughtcrime.securesms.conversation.colors.ui.custom
 
+import android.os.Build
 import android.os.Bundle
 import android.view.View
 import androidx.appcompat.widget.Toolbar
@@ -33,7 +34,12 @@ class CustomChatColorCreatorFragment : Fragment(R.layout.custom_chat_color_creat
 
     pager.isUserInputEnabled = false
     pager.adapter = adapter
-    tabLayoutMediator.attach()
+
+    if (Build.VERSION.SDK_INT < 21) {
+      tabLayout.visibility = View.GONE
+    } else {
+      tabLayoutMediator.attach()
+    }
 
     val startPage = CustomChatColorCreatorFragmentArgs.fromBundle(requireArguments()).startPage
     pager.setCurrentItem(startPage, false)

app/src/main/java/org/thoughtcrime/securesms/util/FixedSizeDrawable.kt

@@ -0,0 +1,20 @@
+package org.thoughtcrime.securesms.util
+
+import android.graphics.drawable.Drawable
+import android.graphics.drawable.LayerDrawable
+import androidx.annotation.Px
+
+/**
+ * Drawable that wraps another drawable but explicitly sets its intrinsic width and height as specified.
+ */
+class FixedSizeDrawable(
+  drawable: Drawable,
+  @Px private val width: Int,
+  @Px private val height: Int
+) : LayerDrawable(arrayOf(drawable)) {
+  override fun getIntrinsicHeight(): Int = width
+  override fun getIntrinsicWidth(): Int = height
+}
+
+fun Drawable.withFixedSize(@Px width: Int, @Px height: Int) = FixedSizeDrawable(this, width, height)
+fun Drawable.withFixedSize(@Px size: Int) = withFixedSize(size, size)

app/src/main/java/org/thoughtcrime/securesms/wallpaper/ChatWallpaperFragment.java

@@ -5,6 +5,7 @@ import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
 import android.graphics.drawable.Drawable;
+import android.os.Build;
 import android.os.Bundle;
 import android.util.DisplayMetrics;
 import android.view.LayoutInflater;