Settings for the screen magnification feature.

1. Screen magnification on the device has to he explicitly enabled
   by the user before allowing a global gesture related interactions.
   The feature toggle setting is in Settings->Accessibility and it
   is a separate screen with instructions how to use the feature
   and a toggle switch.

2. Added a setting in developer options for toggling the magnification
   auto update feature. If this features is on the screen is zoomed
   out or rotation or activity start. Also if the feature is enabled
   the magnified viewport will scroll to show popped up windows.

bug:5587727

Change-Id: Ic45a21d3a3928e2f5aac034751801f090b261488

1 files changed, 42 insertions, 11 deletions

diff --git a/res/values/strings.xml b/res/values/strings.xml
index 2bce5d7..decfe92 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2973,30 +2973,52 @@
     <string name="accessibility_settings">Accessibility</string>
     <!-- Settings title for accessibility settings screen -->
     <string name="accessibility_settings_title">Accessibility settings</string>
-
     <!--  Title for the accessibility preference category of accessibility services. [CHAR LIMIT=25] -->
     <string name="accessibility_services_title">Services</string>
-
     <!-- Title for the accessibility preference category of system related preferences. [CHAR LIMIT=25] -->
     <string name="accessibility_system_title">System</string>
+    <!-- Title for the accessibility preference screen to enable screen magnification. [CHAR LIMIT=35] -->
+    <string name="accessibility_screen_magnification_title">Screen magnification</string>
+    <!-- Summary for the accessibility preference screen to enable screen magnification. [CHAR LIMIT=35] -->
+    <string name="accessibility_screen_magnification_summary">
+        When screen magnification is on, you can:\n
+        \n
+        Temporary zoom-in: Triple-tap &amp; hold.\n
+        Toggle permanent zoom state: Triple-tap &amp; release.\n
+        \n
+        Adjust zoomed area: Triple-tap &amp; hold to zoom, then drag your finger across the screen.\n
+        Pan when zoomed-in: Drag two or more fingers across the screen.\n
+        \n
+        Adjust zoom level when zoomed-out: Triple-tap &amp; hold to zoom, then drag one or more fingers.\n
+        Adjust zoom level when zoomed-in: Pinch with two or more fingers.\n
+    </string>
+
     <!-- Title for the accessibility preference to enable large text. [CHAR LIMIT=35] -->
-    <string name="accessibility_toggle_large_text_title">Large text</string>
+    <string name="accessibility_toggle_large_text_preference_title">Large text</string>
+    <!-- Title for the accessibility preference to enable screen magnification. [CHAR LIMIT=35] -->
+    <string name="accessibility_toggle_screen_magnification_preference_title">Screen magnification</string>
+    <!-- Title for the accessibility preference to auto update screen magnification. [CHAR LIMIT=35] -->
+    <string name="accessibility_toggle_screen_magnification_auto_update_preference_title">Auto
+        update screen magnification</string>
+    <!-- Summary for the accessibility preference to auto update screen magnification. [CHAR LIMIT=50] -->
+    <string name="accessibility_toggle_screen_magnification_auto_update_preference_summary">Update
+        screen magnification on app transitions</string>
     <!-- Title for the accessibility preference to power button to end a call. [CHAR LIMIT=35] -->
-    <string name="accessibility_power_button_ends_call_title">Power button ends call</string>
+    <string name="accessibility_power_button_ends_call_prerefence_title">Power button ends call</string>
     <!-- Title for the accessibility preference to speak passwords. [CHAR LIMIT=35] -->
-    <string name="accessibility_speak_password_title">Speak passwords</string>
+    <string name="accessibility_toggle_speak_password_preference_title">Speak passwords</string>
     <!-- Title for accessibility preference to choose long-press delay i.e. timeout before it is detected. [CHAR LIMIT=35] -->
-    <string name="accessibility_long_press_timeout_title">Touch &amp; hold delay</string>
+    <string name="accessibility_long_press_timeout_preference_title">Touch &amp; hold delay</string>
     <!-- Title for accessibility preference to install accessibility scripts from Google. [CHAR LIMIT=35] -->
-    <string name="accessibility_script_injection_title">Enhance web accessibility</string>
+    <string name="accessibility_toggle_script_injection_preference_title">Enhance web accessibility</string>
 
     <!-- Title for accessibility menu item to lauch a settings activity. [CHAR LIMIT=15] -->
     <string name="accessibility_menu_item_settings">Settings</string>
 
-    <!-- Summary for the enabled state of an accessiblity serivce. [CHAR LIMIT=10] -->
-    <string name="accessibility_service_state_on">On</string>
-    <!-- Summary for the disabled state of an accessiblity serivce. [CHAR LIMIT=10] -->
-    <string name="accessibility_service_state_off">Off</string>
+    <!-- Summary for the enabled state of an accessiblity feature. [CHAR LIMIT=10] -->
+    <string name="accessibility_feature_state_on">On</string>
+    <!-- Summary for the disabled state of an accessiblity feature. [CHAR LIMIT=10] -->
+    <string name="accessibility_feature_state_off">Off</string>
 
     <!-- Summary for the allowed state of script injection. [CHAR LIMIT=15] -->
     <string name="accessibility_script_injection_allowed">Allowed</string>
@@ -3852,6 +3874,15 @@
     <string name="show_all_anrs_summary">Show App Not Responding dialog
         for background apps</string>
 
+    <!-- Preference category for accessibility debugging development settings. [CHAR LIMIT=25] -->
+    <string name="debug_accessibility_category">Accessibility</string>
+
+    <!-- Accessibility debug setting: automatically update magnification state [CHAR LIMIT=50] -->
+    <string name="display_magnification_auto_update">Auto update magnification</string>
+    <!-- Accessibility debug setting: automatically update magnification state summary [CHAR LIMIT=100] -->
+    <string name="display_magnification_auto_update_summary">Zoom out on rotation or activity
+        start and pan to popped up windows.</string>
+
     <!-- Activity title for network data usage summary. [CHAR LIMIT=25] -->
     <string name="data_usage_summary_title">Data usage</string>
     <!-- Title for option to pick visible time range from a list available usage periods. [CHAR LIMIT=25] -->