deg/rad button added

res/layout-land/main_calculator.xml

@@ -52,12 +52,14 @@
 					 a:layout_height="fill_parent"
 					 a:layout_weight="4"/>
 
-			<org.solovyev.android.view.widgets.ColorButton xmlns:a="http://schemas.android.com/apk/res/android"
+			<org.solovyev.android.view.widgets.AngleUnitsButton xmlns:a="http://schemas.android.com/apk/res/android"
 																xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 																a:id="@+id/clearButton"
+																calc:textUp="deg"
 																a:text="@string/c_clear"
+																calc:textDown="rad"
 																a:textStyle="bold"
-														   style="?controlImageButtonStyle"
+																style="?controlButtonStyle"
 																a:onClick="clearButtonClickHandler"
 																a:layout_width="0dp"
 																a:layout_height="fill_parent"

res/layout-land/main_cellphone.xml

@@ -46,12 +46,14 @@
 					 a:layout_height="fill_parent"
 					 a:layout_weight="4"/>
 
-			<org.solovyev.android.view.widgets.ColorButton xmlns:a="http://schemas.android.com/apk/res/android"
+			<org.solovyev.android.view.widgets.AngleUnitsButton xmlns:a="http://schemas.android.com/apk/res/android"
 																xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 																a:id="@+id/clearButton"
+																calc:textUp="deg"
 																a:text="@string/c_clear"
+																calc:textDown="rad"
 																a:textStyle="bold"
-														   style="?controlImageButtonStyle"
+																style="?controlButtonStyle"
 																a:onClick="clearButtonClickHandler"
 																a:layout_width="0dp"
 																a:layout_height="fill_parent"

res/layout/calc_clear_button.xml

@@ -6,10 +6,12 @@
   ~ or visit http://se.solovyev.org
   -->
 
-<org.solovyev.android.view.widgets.ColorButton xmlns:a="http://schemas.android.com/apk/res/android"
+<org.solovyev.android.view.widgets.AngleUnitsButton xmlns:a="http://schemas.android.com/apk/res/android"
 			 xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 			 a:id="@+id/clearButton"
+			 calc:textUp="deg"
 			 a:text="@string/c_clear"
+			 calc:textDown="rad"
 			 a:textStyle="bold"
-			 style="?controlImageButtonStyle"
+			 style="?controlButtonStyle"
 			 a:onClick="clearButtonClickHandler"/>

res/values-ru/strings.xml

@@ -90,6 +90,8 @@
 	<string name="c_calc_angle_units">Единицы измерения углов</string>
 	<string name="p_deg">Градусы</string>
 	<string name="p_rad">Радианы</string>
+	<string name="p_grad">Грады</string>
+	<string name="p_turns">Обороты</string>
 	<string name="c_angle_units_summary">Определяет единицы измерения углов.</string>
 
 	<string name="c_calc_theme">Тема оформления</string>

res/values/arrays.xml

@@ -50,10 +50,14 @@
 	<string-array name="p_angle_units_names">
 		<item>@string/p_deg</item>
 		<item>@string/p_rad</item>
+		<item>@string/p_grad</item>
+		<item>@string/p_turns</item>
 	</string-array>
 	<string-array name="p_angle_units">
 		<item>deg</item>
 		<item>rad</item>
+		<item>grad</item>
+		<item>turns</item>
 	</string-array>
 
 </resources>

res/values/colors.xml

@@ -10,5 +10,6 @@
 	<color name="button_operator_text_color">#ffffff99</color>
 	<color name="button_ce_text_color">#ffffffff</color>
 	<color name="default_text_color">#ffffffff</color>
+	<color name="selected_angle_unit_text_color">#ffffff99</color>
 	<color name="default_background">#ff000000</color>
 </resources>

res/values/strings.xml

@@ -91,6 +91,8 @@
 	<string name="c_calc_angle_units">Angle Units</string>
 	<string name="p_deg">Degrees</string>
 	<string name="p_rad">Radians</string>
+	<string name="p_grad">Gradians</string>
+	<string name="p_turns">Turns</string>
 	<string name="c_angle_units_summary">Defines the default units for angles.</string>
 
 	<string name="c_calc_theme">Theme</string>

src/main/java/org/solovyev/android/calculator/CalculatorActivity.java

@@ -22,6 +22,7 @@ import android.view.*;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
+import jscl.AngleUnits;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.solovyev.android.calculator.math.MathType;
@@ -121,6 +122,12 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 			equalsButton.setOnDragListener(evalOnDragListener);
 		}
 
+		final AngleUnitsButton angleUnitsButton = (AngleUnitsButton) findViewById(R.id.clearButton);
+		if (angleUnitsButton != null) {
+			final OnDragListener varsOnDragListener = new OnDragListenerVibrator(newOnDragListener(new AngleUnitsChanger(), dragPreferences), vibrator, preferences);
+			angleUnitsButton.setOnDragListener(varsOnDragListener);
+		}
+
 		final DragButton varsButton = (DragButton) findViewById(R.id.varsButton);
 		if (varsButton != null) {
 			final OnDragListener varsOnDragListener = new OnDragListenerVibrator(newOnDragListener(new VarsDragProcessor(), dragPreferences), vibrator, preferences);
@@ -132,6 +139,38 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 		preferences.registerOnSharedPreferenceChangeListener(this);
 	}
 
+	private class AngleUnitsChanger implements SimpleOnDragListener.DragProcessor {
+
+		@Override
+		public boolean processDragEvent(@NotNull DragDirection dragDirection,
+										@NotNull DragButton dragButton,
+										@NotNull Point2d startPoint2d,
+										@NotNull MotionEvent motionEvent) {
+			boolean result = false;
+
+			if ( dragButton instanceof AngleUnitsButton ) {
+				final String directionText = ((AngleUnitsButton) dragButton).getDirectionText(dragDirection);
+				if ( directionText != null ) {
+					try {
+
+						final AngleUnits angleUnits = AngleUnits.valueOf(directionText);
+
+						final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(CalculatorActivity.this);
+						final SharedPreferences.Editor editor = preferences.edit();
+						editor.putString(CalculatorEngine.ANGLE_UNITS_P_KEY, angleUnits.name());
+						editor.commit();
+
+						result = true;
+					} catch (IllegalArgumentException e) {
+						Log.d(this.getClass().getName(), "Unsupported angle units: " + directionText);
+					}
+				}
+			}
+
+			return result;
+		}
+	}
+
 	private class VarsDragProcessor implements SimpleOnDragListener.DragProcessor {
 
 		@Override

src/main/java/org/solovyev/android/view/widgets/AngleUnitsButton.java

@@ -0,0 +1,40 @@
+package org.solovyev.android.view.widgets;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Paint;
+import android.text.TextPaint;
+import android.util.AttributeSet;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.solovyev.android.calculator.R;
+import org.solovyev.android.calculator.model.CalculatorEngine;
+
+/**
+ * User: serso
+ * Date: 11/22/11
+ * Time: 2:42 PM
+ */
+public class AngleUnitsButton extends DirectionDragButton {
+
+	public AngleUnitsButton(Context context, @NotNull AttributeSet attrs) {
+		super(context, attrs);
+	}
+
+	@Nullable
+	@Override
+	protected TextPaint initUpDownTextPaint(@Nullable Paint paint, @NotNull DragDirection direction) {
+		final TextPaint result = super.initUpDownTextPaint(paint, direction);
+
+		if (result != null) {
+			final Resources resources = getResources();
+			if ( CalculatorEngine.instance.getEngine().getDefaultAngleUnits().name().equals(getDirectionText(direction)) ) {
+				result.setColor(resources.getColor(R.color.selected_angle_unit_text_color));
+			} else {
+				result.setColor(resources.getColor(R.color.default_text_color));
+			}
+		}
+
+		return result;
+	}
+}

src/main/java/org/solovyev/android/view/widgets/DirectionDragButton.java

@@ -44,7 +44,10 @@ public class DirectionDragButton extends DragButton {
 	private Point2d textDownPosition;
 
 	@NotNull
-	private TextPaint upDownTextPaint;
+	private TextPaint upTextPaint;
+
+	@NotNull
+	private TextPaint downTextPaint;
 
 	@Nullable
 	private Float directionTextScale = DEFAULT_DIRECTION_TEXT_SCALE;
@@ -107,14 +110,15 @@ public class DirectionDragButton extends DragButton {
 		super.measureText();
 
 		final Paint basePaint = getPaint();
-		initUpDownTextPaint(basePaint);
 
 		if (textUp != null) {
-			textUpPosition = getTextPosition(upDownTextPaint, basePaint, textUp, getText(), 1, getWidth(), getHeight(), getDirectionTextScale());
+			initUpDownTextPaint(basePaint, DragDirection.up);
+			textUpPosition = getTextPosition(upTextPaint, basePaint, textUp, getText(), 1, getWidth(), getHeight(), getDirectionTextScale());
 		}
 
 		if (textDown != null) {
-			textDownPosition = getTextPosition(upDownTextPaint, basePaint, textDown, getText(), -1, getWidth(), getHeight(), getDirectionTextScale());
+			initUpDownTextPaint(basePaint, DragDirection.down);
+			textDownPosition = getTextPosition(downTextPaint, basePaint, textDown, getText(), -1, getWidth(), getHeight(), getDirectionTextScale());
 		}
 
 		/*if (textDownPosition != null && textUpPosition != null) {
@@ -150,28 +154,44 @@ public class DirectionDragButton extends DragButton {
 	public void onDraw(Canvas canvas) {
 		super.onDraw(canvas);
 
-		initUpDownTextPaint(null);
 
 		if (textUp != null && textUpPosition != null) {
-			canvas.drawText(textUp, 0, textUp.length(), textUpPosition.getX(), textUpPosition.getY(), upDownTextPaint);
+			initUpDownTextPaint(null, DragDirection.up);
+			canvas.drawText(textUp, 0, textUp.length(), textUpPosition.getX(), textUpPosition.getY(), upTextPaint);
 		}
 
 		if (textDown != null && textDownPosition != null) {
-			canvas.drawText(textDown, 0, textDown.length(), textDownPosition.getX(), textDownPosition.getY(), upDownTextPaint);
+			initUpDownTextPaint(null, DragDirection.down);
+			canvas.drawText(textDown, 0, textDown.length(), textDownPosition.getX(), textDownPosition.getY(), downTextPaint);
 		}
 	}
 
-	private void initUpDownTextPaint(@Nullable Paint paint) {
+	@Nullable
+	protected TextPaint initUpDownTextPaint(@Nullable Paint paint, @NotNull DragDirection direction) {
 		if (paint == null) {
 			paint = getPaint();
 		}
 
 		final Resources resources = getResources();
+		if (direction == DragDirection.up) {
+			upTextPaint = getUpDownTextPaint(paint, resources, getDirectionTextScale());
+			return upTextPaint;
+		} else if (direction == DragDirection.down) {
+			downTextPaint = getUpDownTextPaint(paint, resources, getDirectionTextScale());
+			return downTextPaint;
+		}
 
-		upDownTextPaint = new TextPaint(paint);
+		return null;
-		upDownTextPaint.setColor(resources.getColor(R.color.button_text_color));
+	}
-		upDownTextPaint.setAlpha(150);
+
-		upDownTextPaint.setTextSize(paint.getTextSize() * getDirectionTextScale());
+	@NotNull
+	private static TextPaint getUpDownTextPaint(@NotNull Paint basePaint, @NotNull Resources resources, @NotNull Float directionTextScale) {
+		final TextPaint result = new TextPaint(basePaint);
+		result.setColor(resources.getColor(R.color.button_text_color));
+		result.setAlpha(150);
+		result.setTextSize(basePaint.getTextSize() * directionTextScale);
+
+		return result;
 	}
 
 	@Nullable