Исследование операций (обучающая система) / chapter5 / Applets / uprreserve / Stringer

package uprreserve;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.font.*;
import javax.swing.*;
import java.util.*;

public class Stringer {
public static int[] mist_calc = new int [20];
public static int[] mist_choice = new int [20];
static int lastErrorStep = -1;
static int xStart = 0;
static Graphics2D g2d;
// static String[] atext1 = new String[5];
//static String[] atext2 = new String[5];
//static String[] atext3 = new String[5];
static String atext1, atext2, atext3="";
static int ai;
static int xAnswer, yAnswer;
public static boolean canGo = true;
// static boolean writeEnabled;
static Font[] fonts = {
new Font("SansSerif", 1, 14), // основной текст
new Font("SansSerif", 1, 11), // глваный индекс
new Font("SansSerif", 1, 8) // мелкие индексы
};
static FontRenderContext[] frcs = new FontRenderContext[3];
static Font reservedFont = fonts[0];
static Font commentFont = new Font("SansSerif", 3, 12);
static Color reservedColor;
static Color commentColor = new Color(0,0,128);

public static double fieldValues[] = new double[10];
public static int choiceValue = 0; // 0 - nothing, 1 - first, 2 - second, ...

static JPanel panel = null;
static JTextField[] fields = new JTextField[10];
static JRadioButton[] buttons = new JRadioButton[10];
static ButtonGroup buttonGroup = new ButtonGroup();
static OwnListener ownListener = new OwnListener();

public static int userAnswer = 0;

public static void setFontSizes(int a, int b, int c) {
fonts[0] = new Font("SansSerif", 1, a);
fonts[1] = new Font("SansSerif", 1, b);
fonts[2] = new Font("SansSerif", 1, c);
reservedFont = fonts[0];
}

public static void init() {
lastErrorStep = -1;
}

public static void setGraphics(Graphics g) {
g2d = (Graphics2D) g;
for (int i = 0; i < 3; ++i) {
g2d.setFont(fonts[i]);
frcs[i] = g2d.getFontRenderContext();
}
for (int i = 0; i < 10; ++i) {
if (fields[i] == null) {
continue;
}
panel.remove(fields[i]);
fields[i] = null;
}
for (int i = 0; i < 10; ++i) {
if (buttons[i] == null) {
continue;
}
panel.remove(buttons[i]);
buttonGroup.remove(buttons[i]);
buttons[i] = null;
}
}

public static void setPanel(JPanel p) {
panel = p;
}

public static int drawString(String s, int x, int y) {
//userAnswer = 0;
// ai = 1;
// writeEnabled = false;
xStart = x;
return drawSubstring(s+"n{}", x, y, 0);
}
/*
public static void drawString(String s, int x, int y, boolean isCorrect) {
//userAnswer = isCorrect ? 1 : -1;
xStart = x;
drawSubstring(s, x, y, 0);
}
*/
public static boolean tryUpdate() {
for (int i = 0; i < 10; ++i) {
if (fields[i] == null) {
continue;
}
try {
fieldValues[i] = Double.parseDouble(fields[i].getText());
}
catch (NumberFormatException e) {
return false;
}
}

for (int i = 0; i < 10; ++i) {
if (buttons[i] == null) {
continue;
}
if (buttons[i].isSelected()) {
choiceValue = i + 1;
}
}

for (int i = 0; i < 10; ++i) {
if (fields[i] == null) {
continue;
}
panel.remove(fields[i]);
fields[i] = null;
}
for (int i = 0; i < 10; ++i) {
if (buttons[i] == null) {
continue;
}
panel.remove(buttons[i]);
buttonGroup.remove(buttons[i]);
buttons[i] = null;
}

return true;
}

public static boolean update() {
for (int i = 0; i < 10; ++i) {
if (fields[i] == null) {
continue;
}
panel.remove(fields[i]);
fields[i] = null;
}
for (int i = 0; i < 10; ++i) {
if (buttons[i] == null) {
continue;
}
panel.remove(buttons[i]);
buttonGroup.remove(buttons[i]);
buttons[i] = null;
}

return true;
}



private static int drawSubstring(String s, int x, int y, int sy) {
// System.out.println(s);
String text, text1, text2, text3, text4;
char sym;
int i, dy, iEnd, index = 0, fieldIndex = 0;
Rectangle2D r, rr;
int fontIndex = 0;
boolean[] adj = {true, true, true, true, true};
boolean first = true;

if (sy == 1 || sy == -1) {
fontIndex = 1;
}
else if (sy != 0) {
fontIndex = 2;
}
//boolean needLower = false;
/*
if ((s.indexOf("#", index) != -1 && s.indexOf("#", index) < s.indexOf("n{}")) || s.indexOf("%") != -1) {
r = fonts[fontIndex].getStringBounds(s, frcs[fontIndex]);
// следующая строчка отвечает за отступ по y
y += r.getHeight() / 2 + 2;
}
*/
while (true) {
if ((s.indexOf("#", index) != -1 && s.indexOf("#", index) < s.indexOf("n{}", index)) ||
(s.indexOf("%", index) != -1 && s.indexOf("%", index) < s.indexOf("n{}", index)) ||
(s.indexOf("/{", index) != -1 && s.indexOf("/{", index) < s.indexOf("n{}", index))) {
r = fonts[fontIndex].getStringBounds(s, frcs[fontIndex]);
// следующая строчка отвечает за отступ по y
if (!adj[sy]) {
y += r.getHeight() / 2 + 2;
adj[sy] = true;
}

}

i = s.indexOf("{", index);
if (i == -1) {
i = s.length() + 1;
}
if (index > i - 1) {
return x;
}
text = s.substring(index, i - 1);
g2d.setFont(fonts[fontIndex]);
r = fonts[fontIndex].getStringBounds(text, frcs[fontIndex]);
g2d.drawString(text, x, y);
x += r.getWidth();
if (i == s.length() + 1) {
return x;
}
sym = s.charAt(i - 1);//System.out.println(sym);
iEnd = getEnd(s, i + 1); //s.indexOf("}", i);
index = iEnd + 1;
if (sym == 'n') {
y += r.getHeight() + 3;
x = xStart;
if(adj[sy]&& !first) y += r.getHeight();
first = false;
adj[sy] = false;
}
else if (sym == 'c') {
text1 = s.substring(i + 1, iEnd);
reservedFont = fonts[fontIndex];
fonts[fontIndex] = commentFont;
g2d.setFont(commentFont);
reservedColor = g2d.getColor();
g2d.setColor(commentColor);
x = drawSubstring(text1, x, y, sy);

fonts[fontIndex] = reservedFont;
g2d.setFont(reservedFont);
//reservedColor = g2d.getColor();
g2d.setColor(reservedColor);

}
else if (sym == 'e') {
fonts[fontIndex] = reservedFont;
g2d.setFont(reservedFont);
//reservedColor = g2d.getColor();
g2d.setColor(reservedColor);
}
else if (sym == '_') {
text1 = s.substring(i + 1, iEnd);
dy = 5;
x = drawSubstring(text1, x, y + dy, sy + 1);
}
else if (sym == '^') {
text1 = s.substring(i + 1, iEnd);
dy = -5;
x = drawSubstring(text1, x, y + dy, sy + 1);
}
else if(sym == '/') {
text1 = s.substring(i + 1, iEnd);
i = iEnd + 2; //{f}{g}
iEnd = getEnd(s, i);
index = iEnd + 1;
text2 = s.substring(i, iEnd);
dy = 5;
int xx1 = drawSubstring(text1, x, y - (int) r.getHeight() / 2 - 2, sy);
int xTemp = x;
x = drawSubstring(text2, x, y + (int) r.getHeight() / 2 + 2, sy);
if (xx1 > x) {
x = xx1;
}
g2d.drawLine(x, y - (int) r.getHeight() / 2+3, xTemp, y - (int) r.getHeight() / 2+3);

}


else if (sym == '&') {
text1 = s.substring(i + 1, iEnd);
i = iEnd + 2; //{f}{g}
iEnd = getEnd(s, i);
index = iEnd + 1;
text2 = s.substring(i, iEnd);
dy = 5;
int x1 = drawSubstring(text1, x, y + dy, sy + 1);
x = drawSubstring(text2, x, y - dy, sy + 1);
if (x1 > x) {
x = x1;
}
}
else if (sym == '#') {
text1 = s.substring(i + 1, iEnd);
i = iEnd + 2; //{f}{g}
iEnd = getEnd(s, i);
index = iEnd + 1;
text2 = s.substring(i, iEnd);

int ys1 = y - (int) r.getHeight() / 2 - (int) r.getHeight();
int ys2 = y - (int) r.getHeight() / 2 + (int) r.getHeight() + 3;

QuadCurve2D.Double sh = new QuadCurve2D.Double(x, ys1, x - 4,
(ys1 + ys2) / 2, x, ys2);
g2d.draw(sh);

int x1 = drawSubstring(text1, x + 5,
y - (int) r.getHeight() / 2 - 2, sy);
x = drawSubstring(text2, x + 5, y + (int) r.getHeight() / 2 + 2,
sy);
if (x1 > x) {
x = x1;
}
x += 4;

if (s.charAt(index) == '{') {
i = iEnd + 2; //{f}{g}{h}{j}
iEnd = getEnd(s, i);
index = iEnd + 1;
text3 = s.substring(i, iEnd);

i = iEnd + 2; //{f}{g}{h}{j}
iEnd = getEnd(s, i);
index = iEnd + 1;
text4 = s.substring(i, iEnd);

x1 = drawSubstring(text3, x + 5,
y - (int) r.getHeight() / 2 - 2, sy);
x = drawSubstring(text4, x + 5,
y + (int) r.getHeight() / 2 + 2, sy);
if (x1 > x) {
x = x1;
}
}

sh = new QuadCurve2D.Double(x, ys1, x + 5, (ys1 + ys2) / 2, x,
ys2);
g2d.draw(sh);
x += 6;

}
else if (sym == '?') {
text1 = s.substring(i + 1, iEnd);
fieldIndex = Integer.parseInt(text1);
JTextField f = new JTextField();
fields[fieldIndex] = f;
f.setBounds(x, y - (int) r.getHeight() + 1, 60,
(int) r.getHeight() + 3);
f.setFont(fonts[fontIndex]);
f.setText("");
f.setForeground(g2d.getColor());
f.addActionListener(ownListener);
f.addFocusListener(ownListener);
panel.add(f);
x += 62;
}
else if (sym == '%') {
//index--;
fieldIndex = 0; //Integer.parseInt(text1);

text2 = s.substring(i + 1, iEnd);
//System.out.println(text2);
JRadioButton b = new JRadioButton(text2);
buttons[fieldIndex] = b;
fieldIndex++;
b.setFont(fonts[fontIndex]);
b.setForeground(g2d.getColor());
b.setBackground(panel.getBackground());
b.addActionListener(ownListener);
//b.setLocation(x, y - (int)r.getHeight()+1);
//b.setBounds(x, y - (int)r.getHeight()+1,50,50);
rr = fonts[fontIndex].getStringBounds(text2, frcs[fontIndex]);
b.setBounds(x, y - (int) r.getHeight() * 3 / 2 + 1,
(int) rr.getWidth() + 25, (int) r.getHeight() + 4);
panel.add(b);
buttonGroup.add(b);
int xx = x + b.getWidth() + 2;

// while (s.charAt(index) == '{') {
i = iEnd + 2; //{f}{g}{h}{j}
iEnd = getEnd(s, i);
index = iEnd + 1;
text2 = s.substring(i, iEnd);

b = new JRadioButton(text2);
buttons[fieldIndex] = b;
fieldIndex++;
b.setFont(fonts[fontIndex]);
b.setForeground(g2d.getColor());
b.setBackground(panel.getBackground());
b.addActionListener(ownListener);
rr = fonts[fontIndex].getStringBounds(text2, frcs[fontIndex]);
b.setBounds(x, y + 5 - (int) rr.getHeight() / 2,
(int) rr.getWidth() + 25, (int) r.getHeight() + 4);
panel.add(b);
buttonGroup.add(b);
x += b.getWidth() + 2;
if (xx > x) {
x = xx;
// }
}
}
else if (sym == '!') {
canGo = false;
atext1 = s.substring(i + 1, iEnd);
i = iEnd + 2; //{f}{g}
iEnd = getEnd(s, i);
index = iEnd + 1;
atext2 = s.substring(i, iEnd);
if (atext1.trim().toLowerCase().equals("field")) {
i = iEnd + 2; //{f}{g}
iEnd = getEnd(s, i);
index = iEnd + 1;
//atext3 = atext2;
atext3 = s.substring(i, iEnd);
}
xAnswer = x;
yAnswer = y;
ai++;
System.out.println(ai);
}
}
}

private static int getEnd(String s, int from) {
int balance = 1;
while (true) {
if (s.charAt(from) == '{') {
balance++;
}
else if (s.charAt(from) == '}') {
balance--;
}
if (balance == 0) {
break;
}
from++;
}
return from;

}

/* public static void infoEntered(AWTEvent e) {

Component c = (Component) e.getSource();
if (c == buttons[0] || c == buttons[1]) {
// buttons[0].setEnabled(false);
/// buttons[1].setEnabled(false);
}
else {
// c.setEnabled(false);

}

//for (int i = 0; i < ai; ++i) {
//userAnswer = 0;
atext2 = atext2.replace(',', '.');
atext3 = atext3.replace(',', '.');
if (atext1.trim().toLowerCase().equals("field")) {
//int fi1 = Integer.parseInt(atext3);
//int fi2 = Integer.parseInt(atext3);
//System.out.println(atext2 + " / " + fieldValues[fi]);
if (fields[0].getText().trim() == "" || fields[1].getText().trim() == "") return;
//fields[0].setEnabled(false);
//fields[1].setEnabled(false);

double d1, d2;
try {
d1 = Double.parseDouble(fields[0].getText());
d2 = Double.parseDouble(fields[1].getText());
}
catch (NumberFormatException ex) {
d1 = d2 = Double.NaN;
//fields[0].setEnabled(true);
//fields[1].setEnabled(true);
userAnswer = 0;
return;
}
if (fields[0].getText() == "" || fields[1].getText() == "") {
userAnswer = 0;
}
else {
userAnswer = (d1 == Double.parseDouble(atext2) && d2 == Double.parseDouble(atext3)) ? 1 : -1;
if(userAnswer < 0 && lastErrorStep != DrawPanel.step) {
mist_calc[DrawPanel.step]++;
lastErrorStep = DrawPanel.step;
}

}
}
else {
if (!buttons[0].isSelected() && !buttons[1].isSelected()) {
userAnswer = 0;return;
}
else if ( (atext2.equals("1") && buttons[0].isSelected()) ||
(atext2.equals("2") && buttons[1].isSelected())) {
userAnswer = 1;
}
else {
userAnswer = -1;
}
if(userAnswer < 0 && lastErrorStep != DrawPanel.step) {
mist_choice[DrawPanel.step]++;
lastErrorStep = DrawPanel.step;
}

}
//if (userAnswer == 0) return;
System.out.println("!");
//}
g2d = (Graphics2D) panel.getGraphics(); // халтура!
g2d.setFont(fonts[0]);
if (userAnswer > 0) {
g2d.setColor(Color.white);
g2d.drawString("\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588", xAnswer, yAnswer);
g2d.setColor(Color.red);
g2d.drawString("Правильно!", xAnswer, yAnswer);
}
else if (userAnswer < 0) {
g2d.setColor(Color.white);
g2d.drawString("\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588\u2588", xAnswer, yAnswer);
g2d.setColor(Color.red);
g2d.drawString("Не правильно.", xAnswer, yAnswer);
// подсчитывание ошибок
// mist_calc[DrawPanel.step]++;
}
if(userAnswer>0) {
canGo = true;
lastErrorStep = -1;
}
}*/
}

class OwnListener extends FocusAdapter implements ActionListener {

public void actionPerformed(ActionEvent e) {
//Stringer.infoEntered(e);

}

public void focusLost(FocusEvent e) {
// Stringer.infoEntered(e);
}

}