Add accessibility display adjustments to Settings

This will be redesigned soon, but for now it allows access to quick setting tiles for testing display adjustments. BUG: 9057596 Change-Id: I4b760487b2fe0a336b188930306000e5dfc01951
2013-10-02 16:36:33 -07:00
parent f654f192b9
commit fc0ab213b8
15 changed files with 726 additions and 33 deletions
--- a/src/com/android/settings/accessibility/ToggleContrastPreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleContrastPreferenceFragment.java
@@ -0,0 +1,121 @@
+/*
+ * 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.os.Bundle;
+import android.preference.CheckBoxPreference;
+import android.preference.Preference;
+import android.preference.PreferenceScreen;
+import android.preference.SeekBarPreference;
+import android.provider.Settings;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+
+import com.android.settings.R;
+import com.android.settings.accessibility.ToggleSwitch.OnBeforeCheckedChangeListener;
+
+public class ToggleContrastPreferenceFragment extends ToggleFeaturePreferenceFragment
+        implements Preference.OnPreferenceChangeListener {
+    private static final String ENABLED = Settings.Secure.ACCESSIBILITY_DISPLAY_CONTRAST_ENABLED;
+    private static final String QUICK_SETTING_ENABLED =
+            Settings.Secure.ACCESSIBILITY_DISPLAY_CONTRAST_QUICK_SETTING_ENABLED;
+
+    private CheckBoxPreference mEnableQuickSetting;
+    private SeekBarPreference mBrightness;
+    private SeekBarPreference mContrast;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        addPreferencesFromResource(R.xml.accessibility_contrast_settings);
+
+        mEnableQuickSetting = (CheckBoxPreference) findPreference("enable_quick_setting");
+        mBrightness = (SeekBarPreference) findPreference("brightness");
+        mBrightness.setMax(1000);
+        mContrast = (SeekBarPreference) findPreference("contrast");
+        mContrast.setMax(1000);
+
+        initPreferences();
+    }
+
+    @Override
+    protected void onPreferenceToggled(String preferenceKey, boolean enabled) {
+        Settings.Secure.putInt(getContentResolver(), ENABLED, enabled ? 1 : 0);
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        if (preference == mEnableQuickSetting) {
+            Settings.Secure.putInt(
+                    getContentResolver(), QUICK_SETTING_ENABLED, ((Boolean) newValue) ? 1 : 0);
+        } else if (preference == mBrightness) {
+            final int progress = (Integer) newValue;
+            final float value = progress / 1000f - 0.5f;
+            Settings.Secure.putFloat(
+                    getContentResolver(), Settings.Secure.ACCESSIBILITY_DISPLAY_BRIGHTNESS, value);
+        } else if (preference == mContrast) {
+            final int progress = (Integer) newValue;
+            final float value = progress / 1000f * 10f + 1f;
+            Settings.Secure.putFloat(
+                    getContentResolver(), Settings.Secure.ACCESSIBILITY_DISPLAY_CONTRAST, value);
+        }
+
+        return true;
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        setTitle(getString(R.string.accessibility_display_contrast_preference_title));
+    }
+
+    @Override
+    protected void onInstallActionBarToggleSwitch() {
+        super.onInstallActionBarToggleSwitch();
+
+        mToggleSwitch.setCheckedInternal(
+                Settings.Secure.getInt(getContentResolver(), ENABLED, 0) == 1);
+        mToggleSwitch.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton button, boolean checked) {
+                onPreferenceToggled(mPreferenceKey, checked);
+            }
+        });
+    }
+
+    private void initPreferences() {
+        mEnableQuickSetting.setChecked(
+                Settings.Secure.getInt(getContentResolver(), QUICK_SETTING_ENABLED, 0) == 1);
+        mEnableQuickSetting.setOnPreferenceChangeListener(this);
+
+        final float brightness = Settings.Secure.getFloat(
+                getContentResolver(), Settings.Secure.ACCESSIBILITY_DISPLAY_BRIGHTNESS, 0);
+        final float contrast = Settings.Secure.getFloat(
+                getContentResolver(), Settings.Secure.ACCESSIBILITY_DISPLAY_CONTRAST, 2);
+
+        // Available brightness range is -0.5 to 0.5.
+        mBrightness.setProgress((int) (1000 * (brightness + 0.5f)));
+        mBrightness.setOnPreferenceChangeListener(this);
+
+        // Available contrast range is 1 to 10.
+        mContrast.setProgress((int) (1000 * (contrast - 1f) / 10f));
+        mContrast.setOnPreferenceChangeListener(this);
+    }
+}