Add a preference to resize the keyboard height.

The keyboard height is controlled by a slider in the debug preferences.
Without access to debug preferences, this change is a no-op.

Bug: 6867494
Change-Id: I984064ed1cab752876615f5ed582818474d6041b

1 files changed, 49 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/settings/DebugSettingsFragment.java b/java/src/com/android/inputmethod/latin/settings/DebugSettingsFragment.java
index 2e5c3c479..068f56df1 100644
--- a/java/src/com/android/inputmethod/latin/settings/DebugSettingsFragment.java
+++ b/java/src/com/android/inputmethod/latin/settings/DebugSettingsFragment.java
@@ -89,6 +89,8 @@ public final class DebugSettingsFragment extends SubScreenFragment
                 defaultKeyPreviewDismissEndScale);
         setupKeyPreviewAnimationScale(DebugSettings.PREF_KEY_PREVIEW_DISMISS_END_Y_SCALE,
                 defaultKeyPreviewDismissEndScale);
+        setupKeyboardHeight(
+                DebugSettings.PREF_KEYBOARD_HEIGHT_SCALE, SettingsValues.DEFAULT_SIZE_SCALE);
 
         mServiceNeedsRestart = false;
         mDebugMode = (TwoStatePreference) findPreference(DebugSettings.PREF_DEBUG_MODE);
@@ -250,4 +252,51 @@ public final class DebugSettingsFragment extends SubScreenFragment
             public void feedbackValue(final int value) {}
         });
     }
+
+    private void setupKeyboardHeight(final String prefKey, final float defaultValue) {
+        final SharedPreferences prefs = getSharedPreferences();
+        final SeekBarDialogPreference pref = (SeekBarDialogPreference)findPreference(prefKey);
+        if (pref == null) {
+            return;
+        }
+        pref.setInterface(new SeekBarDialogPreference.ValueProxy() {
+            private static final float PERCENTAGE_FLOAT = 100.0f;
+            private float getValueFromPercentage(final int percentage) {
+                return percentage / PERCENTAGE_FLOAT;
+            }
+
+            private int getPercentageFromValue(final float floatValue) {
+                return (int)(floatValue * PERCENTAGE_FLOAT);
+            }
+
+            @Override
+            public void writeValue(final int value, final String key) {
+                prefs.edit().putFloat(key, getValueFromPercentage(value)).apply();
+            }
+
+            @Override
+            public void writeDefaultValue(final String key) {
+                prefs.edit().remove(key).apply();
+            }
+
+            @Override
+            public int readValue(final String key) {
+                return getPercentageFromValue(
+                        Settings.readKeyboardHeight(prefs, key, defaultValue));
+            }
+
+            @Override
+            public int readDefaultValue(final String key) {
+                return getPercentageFromValue(defaultValue);
+            }
+
+            @Override
+            public String getValueText(final int value) {
+                return String.format(Locale.ROOT, "%d%%", value);
+            }
+
+            @Override
+            public void feedbackValue(final int value) {}
+        });
+    }
 }