| /* |
| * Copyright (C) 2011 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.browser.preferences; |
| |
| import android.content.Context; |
| import android.os.Bundle; |
| import android.preference.Preference; |
| import android.preference.PreferenceFragment; |
| import android.webkit.WebView; |
| |
| import com.android.browser.BrowserSettings; |
| import com.android.browser.PreferenceKeys; |
| import com.android.browser.R; |
| |
| import java.text.NumberFormat; |
| |
| public class AccessibilityPreferencesFragment extends PreferenceFragment |
| implements Preference.OnPreferenceChangeListener { |
| |
| NumberFormat mFormat; |
| // Used to pause/resume timers, which are required for WebViewPreview |
| WebView mControlWebView; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mControlWebView = new WebView(getActivity()); |
| addPreferencesFromResource(R.xml.accessibility_preferences); |
| BrowserSettings settings = BrowserSettings.getInstance(); |
| mFormat = NumberFormat.getPercentInstance(); |
| |
| Preference e = findPreference(PreferenceKeys.PREF_MIN_FONT_SIZE); |
| e.setOnPreferenceChangeListener(this); |
| updateMinFontSummary(e, settings.getMinimumFontSize()); |
| e = findPreference(PreferenceKeys.PREF_TEXT_ZOOM); |
| e.setOnPreferenceChangeListener(this); |
| updateTextZoomSummary(e, settings.getTextZoom()); |
| e = findPreference(PreferenceKeys.PREF_DOUBLE_TAP_ZOOM); |
| e.setOnPreferenceChangeListener(this); |
| updateDoubleTapZoomSummary(e, settings.getDoubleTapZoom()); |
| e = findPreference(PreferenceKeys.PREF_INVERTED_CONTRAST); |
| e.setOnPreferenceChangeListener(this); |
| updateInvertedContrastSummary(e, (int) (settings.getInvertedContrast() * 100)); |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| mControlWebView.resumeTimers(); |
| } |
| |
| @Override |
| public void onPause() { |
| super.onPause(); |
| mControlWebView.pauseTimers(); |
| } |
| |
| @Override |
| public void onDestroy() { |
| super.onDestroy(); |
| mControlWebView.destroy(); |
| mControlWebView = null; |
| } |
| |
| void updateMinFontSummary(Preference pref, int minFontSize) { |
| Context c = getActivity(); |
| pref.setSummary(c.getString(R.string.pref_min_font_size_value, minFontSize)); |
| } |
| |
| void updateTextZoomSummary(Preference pref, int textZoom) { |
| pref.setSummary(mFormat.format(textZoom / 100.0)); |
| } |
| |
| void updateDoubleTapZoomSummary(Preference pref, int doubleTapZoom) { |
| pref.setSummary(mFormat.format(doubleTapZoom / 100.0)); |
| } |
| |
| void updateInvertedContrastSummary(Preference pref, int contrast) { |
| pref.setSummary(mFormat.format(contrast / 100.0)); |
| } |
| |
| @Override |
| public boolean onPreferenceChange(Preference pref, Object objValue) { |
| if (getActivity() == null) { |
| // We aren't attached, so don't accept preferences changes from the |
| // invisible UI. |
| return false; |
| } |
| |
| if (PreferenceKeys.PREF_MIN_FONT_SIZE.equals(pref.getKey())) { |
| updateMinFontSummary(pref, BrowserSettings |
| .getAdjustedMinimumFontSize((Integer) objValue)); |
| } |
| if (PreferenceKeys.PREF_TEXT_ZOOM.equals(pref.getKey())) { |
| BrowserSettings settings = BrowserSettings.getInstance(); |
| updateTextZoomSummary(pref, settings |
| .getAdjustedTextZoom((Integer) objValue)); |
| } |
| if (PreferenceKeys.PREF_DOUBLE_TAP_ZOOM.equals(pref.getKey())) { |
| BrowserSettings settings = BrowserSettings.getInstance(); |
| updateDoubleTapZoomSummary(pref, settings |
| .getAdjustedDoubleTapZoom((Integer) objValue)); |
| } |
| if (PreferenceKeys.PREF_INVERTED_CONTRAST.equals(pref.getKey())) { |
| updateInvertedContrastSummary(pref, |
| (int) ((10 + (Integer) objValue) * 10)); |
| } |
| return true; |
| } |
| |
| } |