Add captioning preferences screen

BUG: 9926077 Change-Id: Iea141d5d6fd0e4f134c36c51d89830b3c31abd09
2013-08-06 13:53:58 -07:00
parent 279a8dfc40
commit cc0e782871
28 changed files with 1939 additions and 12 deletions
--- a/src/com/android/settings/accessibility/ToggleCaptioningPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleCaptioningPreferenceFragment.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import android.app.ActionBar;
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.os.Bundle;
+import android.preference.PreferenceFrameLayout;
+import android.provider.Settings;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.accessibility.CaptioningManager;
+import android.view.accessibility.CaptioningManager.CaptionStyle;
+
+import com.android.settings.R;
+import com.android.settings.accessibility.ToggleSwitch.OnBeforeCheckedChangeListener;
+
+import java.util.Locale;
+
+public class ToggleCaptioningPreferenceFragment extends Fragment {
+    private CaptionPropertiesFragment mPropsFragment;
+    private CaptioningTextView mPreviewText;
+
+    @Override
+    public View onCreateView(
+            LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View rootView = inflater.inflate(R.layout.captioning_preview, container, false);
+
+        // We have to do this now because PreferenceFrameLayout looks at it
+        // only when the view is added.
+        if (container instanceof PreferenceFrameLayout) {
+            ((PreferenceFrameLayout.LayoutParams) rootView.getLayoutParams()).removeBorders = true;
+        }
+
+        return rootView;
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        mPropsFragment = ((CaptionPropertiesFragment) getFragmentManager()
+                .findFragmentById(R.id.properties_fragment));
+        mPropsFragment.setParent(this);
+
+        mPreviewText = (CaptioningTextView) view.findViewById(R.id.preview_text);
+
+        installActionBarToggleSwitch();
+        refreshPreviewText();
+    }
+
+    public void refreshPreviewText() {
+        final CaptioningTextView preview = mPreviewText;
+        if (preview != null) {
+            final Activity activity = getActivity();
+            final ContentResolver cr = activity.getContentResolver();
+            final int styleId = CaptionStyle.getRawPreset(cr);
+            applyCaptionProperties(preview, styleId);
+
+            final Locale locale = CaptioningManager.getLocale(cr);
+            if (locale != null) {
+                final CharSequence localizedText = AccessibilityUtils.getTextForLocale(
+                        activity, locale, R.string.captioning_preview_text);
+                preview.setText(localizedText);
+            }
+        }
+    }
+
+    public static void applyCaptionProperties(CaptioningTextView previewText, int styleId) {
+        previewText.applyStyleAndFontSize(styleId);
+
+        final Context context = previewText.getContext();
+        final ContentResolver cr = context.getContentResolver();
+        final Locale locale = CaptioningManager.getLocale(cr);
+        if (locale != null) {
+            final CharSequence localizedText = AccessibilityUtils.getTextForLocale(
+                    context, locale, R.string.captioning_preview_characters);
+            previewText.setText(localizedText);
+        }
+    }
+
+    private void installActionBarToggleSwitch() {
+        final Activity activity = getActivity();
+        final ToggleSwitch toggleSwitch = new ToggleSwitch(activity);
+
+        final int padding = getResources().getDimensionPixelSize(
+                R.dimen.action_bar_switch_padding);
+        toggleSwitch.setPaddingRelative(0, 0, padding, 0);
+
+        final ActionBar actionBar = activity.getActionBar();
+        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM, ActionBar.DISPLAY_SHOW_CUSTOM);
+
+        final ActionBar.LayoutParams params = new ActionBar.LayoutParams(
+                ActionBar.LayoutParams.WRAP_CONTENT, ActionBar.LayoutParams.WRAP_CONTENT,
+                        Gravity.CENTER_VERTICAL | Gravity.END);
+        actionBar.setCustomView(toggleSwitch, params);
+
+        final boolean enabled = CaptioningManager.isEnabled(getActivity().getContentResolver());
+        mPropsFragment.getPreferenceScreen().setEnabled(enabled);
+        mPreviewText.setVisibility(enabled ? View.VISIBLE : View.INVISIBLE);
+        toggleSwitch.setCheckedInternal(enabled);
+        toggleSwitch.setOnBeforeCheckedChangeListener(new OnBeforeCheckedChangeListener() {
+            @Override
+            public boolean onBeforeCheckedChanged(ToggleSwitch toggleSwitch, boolean checked) {
+                toggleSwitch.setCheckedInternal(checked);
+                Settings.Secure.putInt(getActivity().getContentResolver(),
+                        Settings.Secure.ACCESSIBILITY_CAPTIONING_ENABLED, checked ? 1 : 0);
+                mPropsFragment.getPreferenceScreen().setEnabled(checked);
+                mPreviewText.setVisibility(checked ? View.VISIBLE : View.INVISIBLE);
+                return false;
+            }
+        });
+    }
+}