TnSb/android-calculatorpp
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

new interface implementation

Browse Source
This commit is contained in:
serso
2011-09-11 17:17:20 +04:00
parent ef1508dcc7
commit 26a0fbc02d
8 changed files with 195 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

148
src/org/solovyev/android/calculator/CalculatorActivity.java
View File

@@ -8,9 +8,14 @@ import java.util.List;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.text.ClipboardManager;
import android.text.InputType;
import android.util.TypedValue;
import android.view.*;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;
import android.widget.Toast;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.solovyev.android.view.*;
@@ -24,6 +29,7 @@ import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;
import org.solovyev.util.math.MathUtils;
import org.solovyev.util.math.Point2d;
public class CalculatorActivity extends Activity implements FontSizeAdjuster {
@@ -34,7 +40,7 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
private EditText editText;
@NotNull
private EditText resultEditText;
private TextView resultEditText;
@NotNull
private Interpreter interpreter;
@@ -56,9 +62,25 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.editText = (EditText) findViewById(R.id.editText);
final InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
this.editText = (EditText) findViewById(R.id.editText);
this.editText.setInputType(InputType.TYPE_NULL);
imm.hideSoftInputFromWindow(this.editText.getWindowToken(), 0);
this.resultEditText = (TextView) findViewById(R.id.resultEditText);
this.resultEditText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final CharSequence text = ((TextView) v).getText();
if (!StringUtils.isEmpty(text)) {
final ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(text);
Toast.makeText(CalculatorActivity.this, "Result copied to clipboard!", Toast.LENGTH_SHORT).show();
}
}
});
this.resultEditText = (EditText) findViewById(R.id.resultEditText);
final DragButtonCalibrationActivity.Preferences dragPreferences = DragButtonCalibrationActivity.getPreferences(this);
@@ -93,9 +115,31 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
}
final SimpleOnDragListener historyOnDragListener = new SimpleOnDragListener(new HistoryDragProcessor(), dragPreferences);
((DragButton) findViewById(R.id.historyButton)).setOnDragListener(historyOnDragListener);
((DragButton) findViewById(R.id.clearButton)).setOnDragListener(historyOnDragListener);
((DragButton) findViewById(R.id.pasteButton)).setOnDragListener(historyOnDragListener);
onDragListeners.add(historyOnDragListener);
final SimpleOnDragListener toPositionOnDragListener = new SimpleOnDragListener(new SimpleOnDragListener.DragProcessor() {
@Override
public boolean processDragEvent(@NotNull DragDirection dragDirection, @NotNull DragButton dragButton, @NotNull Point2d startPoint2d, @NotNull MotionEvent motionEvent) {
boolean result = false;
if (dragButton instanceof DirectionDragButton) {
String text = ((DirectionDragButton) dragButton).getText(dragDirection);
if ("↞".equals(text)) {
CalculatorActivity.this.editText.setSelection(0);
} else if ("↠".equals(text)) {
CalculatorActivity.this.editText.setSelection(CalculatorActivity.this.editText.getText().length());
}
}
return result;
}
}, dragPreferences);
((DragButton) findViewById(R.id.rightButton)).setOnDragListener(toPositionOnDragListener);
((DragButton) findViewById(R.id.leftButton)).setOnDragListener(toPositionOnDragListener);
onDragListeners.add(toPositionOnDragListener);
this.interpreter = new Interpreter();
try {
@@ -119,6 +163,8 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
}
}
};
registerReceiver(this.preferencesChangesReceiver, new IntentFilter(DragButtonCalibrationActivity.INTENT_ACTION));
}
private void saveHistoryState() {
@@ -126,20 +172,22 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
}
public void elementaryButtonClickHandler(@NotNull View v) {
eval(JsclOperation.elementary);
eval(JsclOperation.elementary, true);
}
public void numericButtonClickHandler(@NotNull View v) {
eval(JsclOperation.numeric);
eval(JsclOperation.numeric, true);
}
public void eraseButtonClickHandler(@NotNull View v) {
editText.getText().delete(editText.getSelectionStart() - 1, editText.getSelectionStart());
saveHistoryState();
if (editText.getSelectionStart() > 0) {
editText.getText().delete(editText.getSelectionStart() - 1, editText.getSelectionStart());
saveHistoryState();
}
}
public void simplifyButtonClickHandler(@NotNull View v) {
eval(JsclOperation.simplify);
eval(JsclOperation.simplify, true);
}
public void moveLeftButtonClickHandler(@NotNull View v) {
@@ -154,16 +202,36 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
}
}
public void clearButtonClickHandler(@NotNull View v) {
editText.getText().clear();
resultEditText.getText().clear();
saveHistoryState();
public void pasteButtonClickHandler(@NotNull View v) {
final ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
if ( clipboard.hasText() ) {
editText.getText().append(clipboard.getText());
saveHistoryState();
}
}
private void eval(@NotNull JsclOperation operation) {
public void clearButtonClickHandler(@NotNull View v) {
if (!StringUtils.isEmpty(editText.getText()) || !StringUtils.isEmpty(resultEditText.getText())) {
editText.getText().clear();
resultEditText.setText("");
saveHistoryState();
}
}
private void eval(@NotNull JsclOperation operation, boolean showError) {
try {
final String preprocessedString = Preprocessor.process(String.valueOf(editText.getText()));
resultEditText.setText(String.valueOf(interpreter.eval(Preprocessor.wrap(operation, preprocessedString))));
String result = String.valueOf(interpreter.eval(Preprocessor.wrap(operation, preprocessedString))).trim();
try {
final Double dResult = Double.valueOf(result);
result = String.valueOf(MathUtils.round(dResult, 5));
} catch (NumberFormatException e) {
}
resultEditText.setText(result);
// result editor might be changed (but main editor - no) => make undo and add new state with saved result
CalculatorHistoryState currentHistoryState = getCurrentHistoryState();
@@ -174,8 +242,10 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
this.historyHelper.addState(currentHistoryState);
} catch (EvalError e) {
Log.e(CalculatorActivity.class.getName(), e.getMessage());
resultEditText.setText(R.string.syntax_error);
if (showError) {
Toast.makeText(CalculatorActivity.this, R.string.syntax_error, Toast.LENGTH_SHORT).show();
Log.e(CalculatorActivity.class.getName(), e.getMessage());
}
}
}
@@ -198,12 +268,7 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
result = true;
final HistoryAction historyAction = HistoryAction.valueOf(actionText);
if (historyHelper.isActionAvailable(historyAction)) {
final CalculatorHistoryState newState = historyHelper.doAction(historyAction, getCurrentHistoryState());
if (newState != null) {
setCurrentHistoryState(newState);
}
}
doHistoryAction(historyAction);
} catch (IllegalArgumentException e) {
Log.e(String.valueOf(dragButton.getId()), "Unsupported history action: " + actionText);
}
@@ -213,6 +278,15 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
}
}
private void doHistoryAction(@NotNull HistoryAction historyAction) {
if (historyHelper.isActionAvailable(historyAction)) {
final CalculatorHistoryState newState = historyHelper.doAction(historyAction, getCurrentHistoryState());
if (newState != null) {
setCurrentHistoryState(newState);
}
}
}
@Nullable
private static String getActionText(@NotNull DirectionDragButton dragButton, @NotNull DragDirection direction) {
final String result;
@@ -239,9 +313,11 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
setValuesFromHistory(this.resultEditText, editorHistoryState.getResultEditorState());
}
private void setValuesFromHistory(@NotNull EditText editText, EditorHistoryState editorHistoryState) {
private void setValuesFromHistory(@NotNull TextView editText, EditorHistoryState editorHistoryState) {
editText.setText(editorHistoryState.getText());
editText.setSelection(editorHistoryState.getCursorPosition());
if (editText instanceof EditText) {
((EditText) editText).setSelection(editorHistoryState.getCursorPosition());
}
}
@NotNull
@@ -249,11 +325,11 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
return new CalculatorHistoryState(getEditorHistoryState(this.editText), getEditorHistoryState(this.resultEditText));
}
private EditorHistoryState getEditorHistoryState(@NotNull EditText editorText) {
private EditorHistoryState getEditorHistoryState(@NotNull TextView textView) {
final EditorHistoryState result = new EditorHistoryState();
result.setText(String.valueOf(editorText.getText()));
result.setCursorPosition(editorText.getSelectionStart());
result.setText(String.valueOf(textView.getText()));
result.setCursorPosition(textView.getSelectionStart());
return result;
}
@@ -285,13 +361,25 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
this.editText.getText().insert(this.editText.getSelectionStart(), text);
this.editText.setSelection(this.editText.getSelectionStart() + cursorPositionOffset, this.editText.getSelectionEnd() + cursorPositionOffset);
saveHistoryState();
eval(JsclOperation.numeric, false);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
doHistoryAction(HistoryAction.undo);
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
final MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.main_menu, menu);
// todo serso: inflate menu as soon as it will implemented in proper way
/* final MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.main_menu, menu);*/
return true;
}

1
src/org/solovyev/android/calculator/DragButtonCalibrationActivity.java
View File

@@ -4,6 +4,7 @@ import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;

15
src/org/solovyev/android/view/DirectionDragButton.java
View File

@@ -167,4 +167,19 @@ public class DirectionDragButton extends DragButton {
public String getTextMiddle() {
return textMiddle;
}
@Nullable
public String getText(@NotNull DragDirection direction) {
final String result;
if (direction == DragDirection.up) {
result = getTextUp();
} else if ( direction == DragDirection.down ) {
result = getTextDown();
} else {
result = null;
}
return result;
}
}

10
src/org/solovyev/util/math/MathUtils.java
View File

@@ -8,6 +8,16 @@ public class MathUtils {
public static final float MIN_AMOUNT = 0.05f;
public static double round(@NotNull Double value, int numberOfFractionDigits) {
double roundFactor = Math.pow(10, numberOfFractionDigits);
if (value < Double.MAX_VALUE / roundFactor) {
return ((double)Math.round(value * roundFactor)) / roundFactor;
} else {
return value;
}
}
public static float getDistance(@NotNull Point2d startPoint,
@NotNull Point2d endPoint) {
return getNorm(subtract(endPoint, startPoint));