round preference
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@ -35,6 +35,8 @@
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<string name="c_vars">переменные</string>
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<string name="c_calc_color_display_title">Подсветка выражений</string>
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<string name="c_calc_round_result_title">Округление результата</string>
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<string name="c_calc_round_result_summary">Включает/выключает округление результата</string>
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<string name="p_calc_result_precision_title">Точность результата</string>
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<string name="c_exit">Выход</string>
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<string name="c_add">Добавить</string>
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@ -22,6 +22,9 @@
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<string name="p_calc_haptic_feedback_key">org.solovyev.android.calculator.CalculatorModel_haptic_feedback</string>
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<string name="p_calc_haptic_feedback">false</string>
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<string name="p_calc_round_result_key">org.solovyev.android.calculator.CalculatorModel_round_result</string>
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<string name="p_calc_round_result">true</string>
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<string name="p_calc_vars">org.solovyev.android.calculator.CalculatorModel_vars</string>
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<string name="p_calc_theme_key">org.solovyev.android.calculator.CalculatorActivity_calc_theme</string>
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@ -38,6 +38,8 @@
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<string name="c_vars">vars</string>
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<string name="c_calc_color_display_title">Highlight expressions</string>
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<string name="c_calc_round_result_title">Round result</string>
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<string name="c_calc_round_result_summary">Toggles rounding of the result</string>
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<string name="p_calc_result_precision_title">Precision of result</string>
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<string name="c_exit">Exit</string>
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<string name="c_add">Add</string>
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@ -4,12 +4,18 @@
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xmlns:range="http://schemas.android.com/apk/res/org.solovyev.android.calculator">
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<PreferenceCategory a:title="@string/c_prefs_calculations_category">
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<android.preference.CheckBoxPreference
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a:key="@string/p_calc_round_result_key"
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a:summary="@string/c_calc_round_result_summary"
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a:title="@string/c_calc_round_result_title"
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a:defaultValue="true"/>
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<org.solovyev.android.view.prefs.NumberPickerDialogPreference
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a:key="@string/p_calc_result_precision_key"
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a:title="@string/p_calc_result_precision_title"
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a:summary="@string/c_calc_result_precision_summary"
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a:defaultValue="5"
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range:boundaries="0;10"/>
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range:boundaries="0;16"/>
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<ListPreference a:key="@string/p_calc_grouping_separator_key"
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a:title="@string/c_calc_grouping_separator"
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@ -481,10 +481,15 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
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}
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@Override
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public void onSharedPreferenceChanged(SharedPreferences preferences, @Nullable String s) {
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public void onSharedPreferenceChanged(SharedPreferences preferences, @Nullable String key) {
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dpclRegister.announce().onDragPreferencesChange(SimpleOnDragListener.getPreferences(preferences, this));
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if (CalculatorEngine.GROUPING_SEPARATOR_P_KEY.equals(key) ||
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CalculatorEngine.ROUND_RESULT_P_KEY.equals(key) ||
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CalculatorEngine.RESULT_PRECISION_P_KEY.equals(key)) {
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CalculatorEngine.instance.reset(this, preferences);
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this.calculatorModel.evaluate();
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}
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final Boolean colorExpressionsInBracketsDefault = new BooleanMapper().parseValue(this.getString(R.string.p_calc_color_display));
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assert colorExpressionsInBracketsDefault != null;
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@ -5,20 +5,33 @@
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package org.solovyev.android.calculator;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.preference.PreferenceActivity;
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import org.solovyev.android.calculator.model.CalculatorEngine;
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/**
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* User: serso
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* Date: 7/16/11
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* Time: 6:37 PM
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*/
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public class CalculatorPreferencesActivity extends PreferenceActivity {
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public class CalculatorPreferencesActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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addPreferencesFromResource(R.xml.main_preferences);
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final SharedPreferences preferences = getPreferenceManager().getSharedPreferences();
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preferences.registerOnSharedPreferenceChangeListener(this);
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onSharedPreferenceChanged(preferences, CalculatorEngine.ROUND_RESULT_P_KEY);
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}
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@Override
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public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
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if (CalculatorEngine.ROUND_RESULT_P_KEY.equals(key)) {
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findPreference(CalculatorEngine.RESULT_PRECISION_P_KEY).setEnabled(preferences.getBoolean(key, true));
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}
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}
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}
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@ -44,8 +44,11 @@ public enum CalculatorEngine {
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public static final String GROUPING_SEPARATOR_P_KEY = "org.solovyev.android.calculator.CalculatorActivity_calc_grouping_separator";
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private static final String GROUPING_SEPARATOR_DEFAULT = " ";
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private static final String RESULT_PRECISION_P_KEY = "org.solovyev.android.calculator.CalculatorModel_result_precision";
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private static final String RESULT_PRECISION_DEFAULT = "5";
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public static final String ROUND_RESULT_P_KEY = "org.solovyev.android.calculator.CalculatorModel_round_result";
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public static final boolean ROUND_RESULT_DEFAULT = true;
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public static final String RESULT_PRECISION_P_KEY = "org.solovyev.android.calculator.CalculatorModel_result_precision";
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public static final String RESULT_PRECISION_DEFAULT = "5";
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@NotNull
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private Interpreter interpreter;
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@ -53,6 +56,8 @@ public enum CalculatorEngine {
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@NotNull
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private final Object lock = new Object();
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private boolean roundResult = true;
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private int precision = 5;
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@NotNull
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@ -88,8 +93,12 @@ public enum CalculatorEngine {
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df.setDecimalFormatSymbols(decimalGroupSymbols);
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df.setGroupingUsed(useGroupingSeparator);
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if (round ) {
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if (isRoundResult()) {
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df.setMaximumFractionDigits(instance.getPrecision());
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return df.format(new BigDecimal(value).setScale(instance.getPrecision(), BigDecimal.ROUND_HALF_UP).doubleValue());
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} else {
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return String.valueOf(value);
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}
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} else {
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return df.format(value);
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}
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@ -217,7 +226,7 @@ public enum CalculatorEngine {
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}
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}
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public int getPrecision() {
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private int getPrecision() {
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return precision;
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}
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@ -225,6 +234,14 @@ public enum CalculatorEngine {
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this.precision = precision;
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}
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private boolean isRoundResult() {
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return roundResult;
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}
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public void setRoundResult(boolean roundResult) {
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this.roundResult = roundResult;
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}
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public void init(@Nullable Context context, @Nullable SharedPreferences preferences) throws EvalError {
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synchronized (lock) {
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reset(context, preferences);
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@ -238,6 +255,7 @@ public enum CalculatorEngine {
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final NumberMapper<Integer> integerNumberMapper = new NumberMapper<Integer>(Integer.class);
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//noinspection ConstantConditions
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this.setPrecision(integerNumberMapper.parseValue(preferences.getString(RESULT_PRECISION_P_KEY, RESULT_PRECISION_DEFAULT)));
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this.setRoundResult(preferences.getBoolean(ROUND_RESULT_P_KEY, ROUND_RESULT_DEFAULT));
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final String groupingSeparator = preferences.getString(GROUPING_SEPARATOR_P_KEY, GROUPING_SEPARATOR_DEFAULT);
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if (StringUtils.isEmpty(groupingSeparator)) {
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