Hallo. Ich habs leider immer noch nicht geschaft bei diesem SpeedReader einen Button der die Schriftart ändert einzufügen und wollte deshalb erneut um Hilfe fragen ^^
Java:
package reader;
import javax.swing.*; //used for user interface
import javax.swing.text.SimpleAttributeSet; //used for changing fonts
import javax.swing.text.StyleConstants; //text styles
import javax.swing.text.StyledDocument; //text styles
import java.awt.*;
import java.awt.event.ActionListener; //listens for mouse clicks on buttons
import java.awt.event.ActionEvent; //handles button press events
import java.io.FileNotFoundException; //handles file exceptions
import java.io.FileReader; //file reader for file input
import java.util.Scanner; //scanner for input
import java.awt.Font;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class Reader {
JFrame guiFrame; //initiate main window frame
JPanel optPanel; //initiate option panel
JFileChooser fileDialog; //initiate fileDialog
JTextPane textPane; //initiate textPane
int pause = 265; //set initial reading speed to 200wpm
int f = 1; //tracks the colour scheme
String filePath; //holds location of the selected file
public static void main(String[] args) {
//Use the event dispatch thread for Swing components
EventQueue.invokeLater(new Runnable()
{
@Override
public void run()
{
new Reader();
}
});
}
public Reader() //Create JFrame and all components
{
guiFrame = new JFrame(); //create new instance of the main window
guiFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); //program will exit if window closed
guiFrame.setTitle("Reader Window"); //title of main window
guiFrame.setSize(500,200); //set the size of the main window
guiFrame.setLocationRelativeTo(null); //put the window in the middle of the screen
guiFrame.setLayout(new BorderLayout()); //initiate layout of guiframe
fileDialog = new JFileChooser();//"C:\\Documents and Settings\\Owner\\My Documents" used to select file to read
textPane = new JTextPane(); //create new instance of the textpane
textPane.setEditable(false); //user cannot edit text in textpane
Font font = new Font("Serif", Font.BOLD, 22); //set font and size
textPane.setFont(font); //set font of textpane
StyledDocument doc = textPane.getStyledDocument(); //styled document allows allignment options
SimpleAttributeSet center = new SimpleAttributeSet(); //attribute set to control center alignment
StyleConstants.setAlignment(center, StyleConstants.ALIGN_CENTER); //Align text to the center
doc.setParagraphAttributes(0, doc.getLength(), center, false); //set formatting options
textPane.setText("Choose a speed, open a file and start reading"); //initial contents of textpane
textPane.setVisible(true); //set textpane to visible
guiFrame.add(textPane, BorderLayout.CENTER); //add textpane with word output in center to guiframe
optPanel = new JPanel(); //add an instance of optPanel
optPanel.setLayout(new GridLayout(1,3)); //set layout of buttons 1 high by 3 wide
guiFrame.add(optPanel,BorderLayout.NORTH); //Put the buttons at the bottom of the window
JButton openButton = new JButton("Open File"); //Create new button
openButton.setActionCommand("Open File");
openButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{ //event happens if file button pressed
try {
openFile(); //call open file method to display file selection window
} catch (Exception e) { //catch exception
e.printStackTrace(); //used to identify problems
}
}
});
optPanel.add(openButton); //add open file button to option panel
JButton speedButton = new JButton("Select WPM"); //Create new button
speedButton.setActionCommand("Select WPM");
speedButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{ //event happens if user clicks button
try {
setSpeed(); //call set speed method to display speed window
} catch (Exception e) { //catch exception
e.printStackTrace(); //used to identify problems
}
}
});
optPanel.add(speedButton); //Add speed selection button to option panel
JButton changeColours = new JButton("change color"); //Add button to invert colour scheme
changeColours.setActionCommand("change color");
changeColours.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) { //event happens when user clicks button---
try {
if (f == 1) { //check the current color settings. Currently black on white
textPane.setForeground(Color.blue); //set text colour to white
f = 0; //tracks colour settings
} else { //check the current color settings. currently white on black
textPane.setForeground(Color.green);
f = 1; //tracks colour settings
}
} catch (Exception e) { //catch exception
e.printStackTrace(); //used to identify problems
}
}
});
optPanel.add(changeColours); //add the colour button to option panel
JSpinner changeFontSize = new JSpinner(
new SpinnerNumberModel(22, 10, 78, 2));
changeFontSize.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
textPane.setFont(textPane.getFont().deriveFont(
((Number)changeFontSize.getValue()).floatValue()));
}
});
optPanel.add(changeFontSize);
guiFrame.setVisible(true);
}
//Show a open file dialog box
private void openFile() throws Exception { //exception needed to handle files
int openChoice = fileDialog.showOpenDialog(guiFrame); //display file chooser window
if (openChoice == JFileChooser.APPROVE_OPTION){ //user selects a file from file chooser window
filePath = fileDialog.getSelectedFile().getPath(); //set filepath as the path of the file selected in the filedialog window
(new Thread(new displayText())).start(); //Start displayText method in separate thread to avoid gui freeze
}
}
private void setSpeed(){ //Method called if speed button pressed
String[] speeds = { "200", "300", "500", "800" }; //String holds values for drop down box
JFrame frame = new JFrame("Input required speed in words per minute"); //new frame to select speed
String speedChoice = (String) JOptionPane.showInputDialog(frame, //option pane used for easy speed selection
"What speed would you like?", //display question to user
"WPM", //window title
JOptionPane.QUESTION_MESSAGE, //standard for option pane
null,
speeds, //add the string of speeds as options
speeds[0]); //default is 200
if(speedChoice.equals("200"))
pause = 265; //187 words in 59.877s that's 187.38414wpm (without natural reading pauses)
else if(speedChoice.equals("300"))
pause = 160; //187 words in 38.522s that's 291.26215wpm (without natural reading pauses)
else if(speedChoice.equals("500"))
pause = 75; //187 words in 22.451s that's 499.75504wpm (without natural reading pauses)
else if(speedChoice.equals("800"))
pause = 28; //187 words in 14.006s that's 801.08527wpm (without natural reading pauses)
}
public class displayText implements Runnable { //Run all the display text method within its own thread. Prevents the GUI from becoming unresponsive
public void run(){
Scanner in = null; //Scanner to read the file at chosen location
try {
in = new Scanner(new FileReader(filePath));
} catch (FileNotFoundException e) { //ignore exception
e.printStackTrace(); //used to identify problems
}
int i =0; //Number of words in document
while(in.hasNextLine()){ //read every line of file
in.next(); //move to next word
i++; //increment word counter
}
in.close(); //Close Scanner after words have been counted
try {
in = new Scanner(new FileReader(filePath)); //New Scanner to start at top of file
} catch (FileNotFoundException e) { //ignore exception
e.printStackTrace(); //used to identify problems
}
String[] word = new String[i]; //Array stores each word
int n = 0;
long start =0, end; //used to calculate words per minute
float time; //will hold time taken to finish article
float wPM; //will hold number of words per minute
for(int k=0; k<i; k++){ //loop cycles through every word in file
//FROM HERE
if(k==0){ //check if at start of loop
start = System.currentTimeMillis(); //Start time used to calculate words per minute
}
else if(k==(i-1)){ //check if at end of loop
end = System.currentTimeMillis(); //end time used to calculate words per minute
time = (end-start); //time taken = end time - start time
wPM = (60/(time/1000))*i; //words per minute = time in minutes * words read
System.out.println(i + " words in " + (time/1000) + "s" + " that's " + wPM + "wpm"); //print results in system dialog
}
//TO HERE is just used to show how many words were read. Used to calculate how much pause to set.
word[k] = in.next(); //get next word from file
//Natural reading speeds and pauses attempt (needs research)
if(word[k].length()>=5 && word[k].length()<=8) n = 100; //short pause for words with 5-8 characters
else if(word[k].length()>=9 && word[k].length()<=12) n = 150; //medium pause for words with 9-12 characters
else if(word[k].length()>12) n = 200; //long pause for words over 12 characters
for(int j=0; j<word[k].length(); j++){ //loop cycles through length of word
if(word[k].charAt(word[k].length()-1) == '.') //Add pause after a full stop
n += 50;
if(word[k].charAt(word[k].length()-1) == ',') //Add slight pause after a comma
n += 30;
}
textPane.setText(word[k]); //Set the word in the text pane to the word read from file
sleep(pause+n); //call sleep method to add a pause after the word. n adds custom pause
n=0; //n set back to 0 after each word
}
}
}
private void sleep(int i) { //Adds a pause between words. i changes length of pause
try {
Thread.sleep(i); //sleep thread for pause+n milliseconds
} catch(InterruptedException e) { //exception needed for sleep
//do nothing
}
}
}
