add borderless thumbnails, "bubble" refactor

Closes #2430

// FREEBIE

src/org/thoughtcrime/securesms/util/Dialogs.java

@@ -28,22 +28,17 @@ public class Dialogs {
     AlertDialog.Builder dialog = new AlertDialog.Builder(context);
     dialog.setTitle(title);
     dialog.setMessage(message);
-    dialog.setIcon(resolveIcon(context, R.attr.dialog_alert_icon));
-    dialog.setPositiveButton(android.R.string.ok, null);
-    dialog.show();
-  }
-  public static void showInfoDialog(Context context, String title, String message) {
-    AlertDialog.Builder dialog = new AlertDialog.Builder(context);
-    dialog.setTitle(title);
-    dialog.setMessage(message);
-    dialog.setIcon(resolveIcon(context, R.attr.dialog_info_icon));
+    dialog.setIcon(ResUtil.getDrawable(context, R.attr.dialog_alert_icon));
     dialog.setPositiveButton(android.R.string.ok, null);
     dialog.show();
   }
 
-  public static Drawable resolveIcon(Context c, int iconAttr) {
-    TypedValue out = new TypedValue();
-    c.getTheme().resolveAttribute(iconAttr, out, true);
-    return c.getResources().getDrawable(out.resourceId);
+  public static void showInfoDialog(Context context, String title, String message) {
+    AlertDialog.Builder dialog = new AlertDialog.Builder(context);
+    dialog.setTitle(title);
+    dialog.setMessage(message);
+    dialog.setIcon(ResUtil.getDrawable(context, R.attr.dialog_info_icon));
+    dialog.setPositiveButton(android.R.string.ok, null);
+    dialog.show();
   }
 }

src/org/thoughtcrime/securesms/util/ListenableFutureTask.java

@@ -30,6 +30,16 @@ public class ListenableFutureTask<V> extends FutureTask<V> {
     super(callable);
   }
 
+  public ListenableFutureTask(final V result) {
+    super(new Callable<V>() {
+      @Override
+      public V call() throws Exception {
+        return result;
+      }
+    });
+    this.run();
+  }
+
   public synchronized void addListener(FutureTaskListener<V> listener) {
     if (this.isDone()) {
       callback(listener);

src/org/thoughtcrime/securesms/util/MediaUtil.java

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.util;
 
 import android.content.Context;
 import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.net.Uri;
 import android.util.Log;
 
@@ -50,6 +51,22 @@ public class MediaUtil {
     return data;
   }
 
+  public static Bitmap getOrGenerateThumbnail(Context context, MasterSecret masterSecret, PduPart part)
+      throws IOException, BitmapDecodingException
+  {
+    if (part.getDataUri() != null && part.getId() > -1) {
+      return BitmapFactory.decodeStream(DatabaseFactory.getPartDatabase(context)
+                                                       .getThumbnailStream(masterSecret, part.getId()));
+    } else if (part.getDataUri() != null) {
+      Log.w(TAG, "generating thumbnail for new part");
+      Bitmap bitmap = MediaUtil.generateThumbnail(context, masterSecret, part.getDataUri(), Util.toIsoString(part.getContentType())).getBitmap();
+      part.setThumbnail(bitmap);
+      return bitmap;
+    } else {
+      throw new FileNotFoundException("no data location specified");
+    }
+  }
+
   public static byte[] getPartData(Context context, MasterSecret masterSecret, PduPart part)
       throws IOException
   {

src/org/thoughtcrime/securesms/util/ResUtil.java

@@ -18,14 +18,27 @@
 package org.thoughtcrime.securesms.util;
 
 import android.content.Context;
+import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
+import android.support.annotation.AttrRes;
 import android.util.TypedValue;
 
-public class ThemeUtil {
-  public static Drawable resolveIcon(Context c, int iconAttr)
-  {
-    TypedValue out = new TypedValue();
-    c.getTheme().resolveAttribute(iconAttr, out, true);
-    return c.getResources().getDrawable(out.resourceId);
+public class ResUtil {
+
+  public static int getColor(Context context, @AttrRes int attr) {
+    final TypedArray styledAttributes = context.obtainStyledAttributes(new int[]{attr});
+    final int        result           = styledAttributes.getColor(0, -1);
+    styledAttributes.recycle();
+    return result;
+  }
+
+  public static int getDrawableRes(Context c, @AttrRes int attr) {
+    final TypedValue out = new TypedValue();
+    c.getTheme().resolveAttribute(attr, out, true);
+    return out.resourceId;
+  }
+
+  public static Drawable getDrawable(Context c, @AttrRes int attr) {
+    return c.getResources().getDrawable(getDrawableRes(c, attr));
   }
 }

src/org/thoughtcrime/securesms/util/SaveAttachmentTask.java

@@ -152,7 +152,7 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
   public static void showWarningDialog(Context context, OnClickListener onAcceptListener) {
     AlertDialog.Builder builder = new AlertDialog.Builder(context);
     builder.setTitle(R.string.ConversationFragment_save_to_sd_card);
-    builder.setIcon(Dialogs.resolveIcon(context, R.attr.dialog_alert_icon));
+    builder.setIcon(ResUtil.getDrawable(context, R.attr.dialog_alert_icon));
     builder.setCancelable(true);
     builder.setMessage(R.string.ConversationFragment_this_media_has_been_stored_in_an_encrypted_database_warning);
     builder.setPositiveButton(R.string.yes, onAcceptListener);

src/org/thoughtcrime/securesms/util/ViewUtil.java

@@ -0,0 +1,41 @@
+/**
+ * Copyright (C) 2015 Open Whisper Systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.thoughtcrime.securesms.util;
+
+import android.graphics.drawable.Drawable;
+import android.support.annotation.DrawableRes;
+import android.view.View;
+
+public class ViewUtil {
+  public static void setBackgroundSavingPadding(View v, Drawable drawable) {
+    final int paddingBottom = v.getPaddingBottom();
+    final int paddingLeft = v.getPaddingLeft();
+    final int paddingRight = v.getPaddingRight();
+    final int paddingTop = v.getPaddingTop();
+    v.setBackgroundDrawable(drawable);
+    v.setPadding(paddingLeft, paddingTop, paddingRight, paddingBottom);
+  }
+
+  public static void setBackgroundSavingPadding(View v, @DrawableRes int resId) {
+    final int paddingBottom = v.getPaddingBottom();
+    final int paddingLeft = v.getPaddingLeft();
+    final int paddingRight = v.getPaddingRight();
+    final int paddingTop = v.getPaddingTop();
+    v.setBackgroundResource(resId);
+    v.setPadding(paddingLeft, paddingTop, paddingRight, paddingBottom);
+  }
+}