feat(new study screen): statistics command/menu action

it improves the ecosystem compatibility.

It also reduces any kind of complaints related to the new study screen not using a navigation drawer like the old one did

Author: BrayanDSO

AnkiDroid/src/main/java/com/ichi2/anki/pages/StatisticsDestination.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2025 Brayan Oliveira <[email protected]>
+ *
+ * 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 com.ichi2.anki.pages
+
+import android.content.Context
+import android.content.Intent
+import com.ichi2.anki.utils.Destination
+
+class StatisticsDestination : Destination {
+    override fun toIntent(context: Context): Intent = PageFragment.getIntent(context, "graphs", null, Statistics::class)
+}

AnkiDroid/src/main/java/com/ichi2/anki/preferences/ControlsSettingsFragment.kt

@@ -25,6 +25,7 @@ import com.ichi2.anki.CollectionManager.TR
 import com.ichi2.anki.R
 import com.ichi2.anki.cardviewer.ViewerCommand
 import com.ichi2.anki.common.annotations.NeedsTest
+import com.ichi2.anki.preferences.reviewer.ViewerAction
 import com.ichi2.anki.previewer.PreviewerAction
 import com.ichi2.anki.reviewer.MappableAction
 import com.ichi2.anki.reviewer.MappableBinding.Companion.toPreferenceString
@@ -135,6 +136,13 @@ class ControlsSettingsFragment :
             val key = getString(keyRes)
             findPreference<Preference>(key)?.isVisible = false
         }
+        requirePreference<ControlPreference>(R.string.statistics_command_key).apply {
+            title = TR.statisticsTitle()
+            isVisible = true
+            if (value == null) {
+                value = ViewerAction.STATISTICS.getBindings(sharedPrefs()).toPreferenceString()
+            }
+        }
     }
 
     companion object {

AnkiDroid/src/main/java/com/ichi2/anki/preferences/reviewer/ViewerAction.kt

@@ -64,6 +64,7 @@ enum class ViewerAction(
     DELETE(R.id.action_delete, R.drawable.ic_delete_white, R.string.menu_delete_note, MENU_ONLY),
 
     // Disabled
+    STATISTICS(R.id.action_statistics, R.drawable.ic_bar_chart_black, R.string.empty_string, DISABLED),
     DECK_OPTIONS(R.id.action_deck_options, R.drawable.ic_tune_white, R.string.menu__deck_options, DISABLED),
     CARD_INFO(R.id.action_card_info, R.drawable.ic_dialog_info, R.string.card_info_title, DISABLED),
     ADD_NOTE(R.id.action_add_note, R.drawable.ic_add, R.string.menu_add_note, DISABLED),
@@ -137,6 +138,7 @@ enum class ViewerAction(
             SHOW_ALL_HINTS -> listOf(keycode(KeyEvent.KEYCODE_G))
             RECORD_VOICE -> listOf(keycode(KeyEvent.KEYCODE_V, shift()))
             REPLAY_VOICE -> listOf(keycode(KeyEvent.KEYCODE_V))
+            STATISTICS -> listOf(keycode(KeyEvent.KEYCODE_T))
             TOGGLE_FLAG_RED ->
                 listOf(
                     keycode(KeyEvent.KEYCODE_1, ctrl()),
@@ -237,6 +239,7 @@ enum class ViewerAction(
 
     fun title(context: Context): String =
         when (this) {
+            STATISTICS -> TR.statisticsTitle()
             RESCHEDULE_NOTE -> TR.actionsSetDueDate().toSentenceCase(context, R.string.sentence_set_due_date)
             else -> context.getString(titleRes)
         }

AnkiDroid/src/main/java/com/ichi2/anki/ui/windows/reviewer/ReviewerViewModel.kt

@@ -44,6 +44,7 @@ import com.ichi2.anki.observability.undoableOp
 import com.ichi2.anki.pages.AnkiServer
 import com.ichi2.anki.pages.CardInfoDestination
 import com.ichi2.anki.pages.DeckOptionsDestination
+import com.ichi2.anki.pages.StatisticsDestination
 import com.ichi2.anki.preferences.reviewer.ViewerAction
 import com.ichi2.anki.previewer.CardViewerViewModel
 import com.ichi2.anki.previewer.TypeAnswer
@@ -672,6 +673,7 @@ class ReviewerViewModel :
                 ViewerAction.USER_ACTION_9 -> userAction(9)
                 ViewerAction.SUSPEND_MENU -> suspendCard()
                 ViewerAction.BURY_MENU -> buryCard()
+                ViewerAction.STATISTICS -> destinationFlow.emit(StatisticsDestination())
                 ViewerAction.FLAG_MENU -> {}
             }
         }

AnkiDroid/src/main/res/drawable/ic_bar_chart_black.xml

@@ -23,8 +23,10 @@
     android:width="24dp"
     android:height="24dp"
     android:viewportWidth="24"
-    android:viewportHeight="24">
+    android:viewportHeight="24"
+    android:tint="?colorControlNormal"
+    >
   <path
-      android:fillColor="#FF000000"
+      android:fillColor="#FFFFFF"
       android:pathData="M5,13.2h3L8,19L5,19zM10.6,5h2.8v14h-2.8zM16.2,9L19,9v10h-2.8z"/>
 </vector>

AnkiDroid/src/main/res/values/ids.xml

@@ -41,6 +41,7 @@
     <item type="id" name="action_toggle_auto_advance"/>
     <item type="id" name="action_record_voice"/>
     <item type="id" name="action_set_due_date"/>
+    <item type="id" name="action_statistics"/>
 
     <item type="id" name="user_action_1"/>
     <item type="id" name="user_action_2"/>

AnkiDroid/src/main/res/values/preferences.xml

@@ -122,6 +122,7 @@
     <string name="remove_flag_command_key">binding_UNSET_FLAG</string>
     <string name="page_up_command_key">binding_PAGE_UP</string>
     <string name="page_down_command_key">binding_PAGE_DOWN</string>
+    <string name="statistics_command_key">binding_STATISTICS</string>
     <string name="tag_command_key">binding_TAG</string>
     <string name="card_info_command_key">binding_CARD_INFO</string>
     <string name="record_voice_command_key">binding_RECORD_VOICE</string>

AnkiDroid/src/main/res/xml/preferences_reviewer_controls.xml

@@ -148,6 +148,12 @@
             android:title="@string/gesture_page_down"
             android:icon="@drawable/ic_double_arrow_down"
             />
+        <com.ichi2.preferences.ReviewerControlPreference
+            android:key="@string/statistics_command_key"
+            android:icon="@drawable/ic_bar_chart_black"
+            app:isPreferenceVisible="false"
+            tools:title="Statistics"
+            />
         <com.ichi2.preferences.ReviewerControlPreference
             android:key="@string/abort_command_key"
             android:title="@string/gesture_abort_learning"