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/*
* TODO:
* Item positions are hard coded, make them dynamic
* so that window can be set to resizable.
*/
import java.util.Vector;
import javax.swing.*;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Insets;
import java.awt.event.*;
import java.awt.*;
import javax.swing.border.Border;
import java.text.DecimalFormat;
import java.lang.StringBuilder;
class RoundBtn implements Border {
private int r;
RoundBtn(int r) {
this.r = r;
}
public Insets getBorderInsets(Component c) {
return new Insets(this.r + 1, this.r + 1, this.r + 2, this.r);
}
public boolean isBorderOpaque() {
return true;
}
public void paintBorder(Component c, Graphics g, int x, int y,
int width, int height) {
g.drawRoundRect(x, y, width - 1, height - 1, r, r);
}
}
public class GFrame extends JFrame {
Parser p;
JTextField tf;
private JButton newButton(String text, int d1, int d2, int d3, int d4) {
JButton b = new JButton();
// b.setBackground(Color.decode("#F78361"));
b.setBackground(Color.decode("#2B2B2B"));
b.setForeground(Color.decode("#e5e5e5"));
b.setFont((new Font("Times New Roman", Font.PLAIN, 20)));
b.setBounds(d1, d2, d3, d4);
b.setBorder(new RoundBtn(15));
b.setText(text);
return b;
}
private void actionAdderForTextField(JButton b, String val) {
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
tf.setText(tf.getText() + val);
}
});
}
GFrame(String title) {
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setTitle(title);
this.getContentPane().setBackground(Color.decode("#111111"));
this.setResizable(false);
// Text Field
tf = new JTextField();
tf.setBackground(Color.decode("#2B2B2B"));
tf.setForeground(Color.decode("#e5e5e5"));
tf.setMargin(new Insets(0, 10, 0, 10));
tf.setBounds(40, 50, 240, 40);
tf.setFont((new Font("Times New Roman", Font.PLAIN, 20)));
tf.setBorder(new RoundBtn(5));
// History
DefaultListModel<String> histList = new DefaultListModel<>();
JList<String> lHist = new JList<>(histList);
lHist.setBackground(Color.decode("#2B2B2B"));
lHist.setForeground(Color.decode("#e5e5e5"));
lHist.setBounds(380, 50, 200, 240);
lHist.setFont(new Font("Times New Roman", Font.PLAIN, 20));
lHist.setBorder(new RoundBtn(5));
this.add(lHist);
// Buttons
JButton bEval = newButton("=", 290, 50, 60, 40);
JButton bExp = newButton("^", 250, 100, 100, 40);
JButton bClear = newButton("CL", 180, 100, 60, 40);
JButton bClearHistory = newButton("Clear History", 380, 300, 200, 40);
JButton bAdd = newButton("+", 250, 300, 100, 40);
JButton bSub = newButton("-", 250, 250, 100, 40);
JButton bMul = newButton("x", 250, 200, 100, 40);
JButton bDiv = newButton("%", 250, 150, 100, 40);
JButton bCut = newButton("", 180, 300, 60, 40);
bCut.setFont(new Font("JetBrainsMono Nerd Font", Font.PLAIN, 20));
JButton bRightPar = newButton(")", 110, 100, 60, 40);
JButton bLeftPar = newButton("(", 40, 100, 60, 40);
JButton bDoubleZero = newButton("00", 40, 300, 60, 40);
JButton bZero = newButton("0", 110, 300, 60, 40);
JButton bOne = newButton("1", 40, 250, 60, 40);
JButton bTwo = newButton("2", 110, 250, 60, 40);
JButton bThree = newButton("3", 180, 250, 60, 40);
JButton bFour = newButton("4", 40, 200, 60, 40);
JButton bFive = newButton("5", 110, 200, 60, 40);
JButton bSix = newButton("6", 180, 200, 60, 40);
JButton bSeven = newButton("7", 40, 150, 60, 40);
JButton bEight = newButton("8", 110, 150, 60, 40);
JButton bNine = newButton("9", 180, 150, 60, 40);
// Add the buttons to the Frame
this.add(bExp);
this.add(bEval);
this.add(bClear);
this.add(bClearHistory);
this.add(bAdd);
this.add(bSub);
this.add(bMul);
this.add(bDiv);
this.add(bCut);
this.add(bRightPar);
this.add(bLeftPar);
this.add(bDoubleZero);
this.add(bZero);
this.add(bOne);
this.add(bTwo);
this.add(bThree);
this.add(bFour);
this.add(bFive);
this.add(bSix);
this.add(bSeven);
this.add(bEight);
this.add(bNine);
this.add(tf);
this.setSize(600, 400);
this.setLayout(null);
this.setVisible(true);
JLabel label = new JLabel("Enter Expression: ");
label.setFont((new Font("Times New Roman", Font.PLAIN, 20)));
label.setBounds(40, 20, 150, 40);
label.setForeground(Color.decode("#e5e5e5"));
this.add(label);
// ActionsListeners
bEval.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (tf.getText().length() != 0) {
String expression = tf.getText();
DecimalFormat format = new DecimalFormat();
p = new Parser(tf.getText());
String formattedResult = format.format(p.eval());
tf.setText(formattedResult);
String formattedExpr = expression + " = " + formattedResult;
// Dont add to history if its already present in histList
for (int i = 0; i < histList.size(); i++) {
if (histList.get(i).equals(formattedExpr)) {
return;
}
}
histList.addElement(formattedExpr);
} else {
tf.setText("No input");
}
}
});
// Common actions that just appends the symbols to the text field
actionAdderForTextField(bExp, "^");
actionAdderForTextField(bAdd, "+");
actionAdderForTextField(bSub, "-");
actionAdderForTextField(bMul, "*");
actionAdderForTextField(bDiv, "/");
actionAdderForTextField(bRightPar, ")");
actionAdderForTextField(bLeftPar, "(");
actionAdderForTextField(bDoubleZero, "00");
actionAdderForTextField(bZero, "0");
actionAdderForTextField(bOne, "1");
actionAdderForTextField(bTwo, "2");
actionAdderForTextField(bThree, "3");
actionAdderForTextField(bFour, "4");
actionAdderForTextField(bFive, "5");
actionAdderForTextField(bSix, "6");
actionAdderForTextField(bSeven, "7");
actionAdderForTextField(bEight, "8");
actionAdderForTextField(bNine, "9");
bClear.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
tf.setText("");
}
});
bClearHistory.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
histList.clear();
}
});
bCut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String text = tf.getText();
tf.setText(text.substring(0, text.length() - 1));
}
});
lHist.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
JList list = (JList) evt.getSource();
if (evt.getClickCount() == 2) {
// Double-click detected
int index = list.locationToIndex(evt.getPoint());
String expr = histList.get(index);
StringBuilder str = new StringBuilder("");
int endIndex = 0;
for (int i = 0; i < expr.length(); i++) {
if (expr.charAt(i) == '=') {
break;
}
endIndex++;
}
tf.setText(expr.substring(0, endIndex));
}
}
});
// bOne.addActionListener(new ActionListener() {
// public void actionPerformed(ActionEvent e) {
// tf.setText(tf.getText() + "1");
// }
// });
}
}
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