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当前位置：查字典教程网 >编程开发 >Java >SWT(JFace)体验之StyledText类
SWT(JFace)体验之StyledText类
摘要：WrapLines.java复制代码代码如下:packageswt_jface.demo4;importorg.eclipse.swt.SW...

WrapLines.java

复制代码 代码如下:

package swt_jface.demo4;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

public class WrapLines {

Display display = new Display();

Shell shell = new Shell(display);

Text text1;

Text text2;

String line = "abcdefghijklmnopqrstuvwxyz0123456789";

private void init() {

text1 = new Text(shell, SWT.BORDER | SWT.MULTI);

//text.setTextLimit(12);

text1.setText(line);

text2 = new Text(shell, SWT.BORDER | SWT.WRAP);

text2.setText(line);

}

public WrapLines() {

shell.setLayout(new GridLayout(2, true));

(new Label(shell, SWT.NULL)).setText("SWT.BORDER |nSWT.MUTLI");

(new Label(shell, SWT.NULL)).setText("SWT.BORDER |nSWT.WRAP");

init();

GridData gridData = new GridData(GridData.FILL_BOTH);

text1.setLayoutData(gridData);

gridData = new GridData(GridData.FILL_BOTH);

text2.setLayoutData(gridData);

shell.pack();

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

public static void main(String[] args) {

new WrapLines();

}

}

RemarksText.java

复制代码 代码如下:

package swt_jface.demo4;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.events.VerifyEvent;

import org.eclipse.swt.events.VerifyListener;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

public class RemarksText {

Display display = new Display();

Shell shell = new Shell(display);

Text text;

public RemarksText() {

shell.setLayout(new GridLayout(1, false));

(new Label(shell, SWT.NULL)).setText("Remarks:");

text = new Text(shell, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);

text.setText("123456789");

text.setLayoutData(new GridData(GridData.FILL_BOTH));

System.out.println("getText: " + text.getText(1, 6));

char[] chars = text.getLineDelimiter().toCharArray();

for (int i = 0; i < chars.length; i++) {

System.out.println("Line delimiter #" + i + ": " + Integer.toHexString(chars[i]) );

}

text.getOrientation();

System.out.println("Number of chars: " + text.getCharCount());

System.out.println("Tabs: " + text.getTabs());

text.addVerifyListener(new VerifyListener() {

public void verifyText(VerifyEvent e) {

if(e.end == e.start) {

if( e.character == ' ' && (e.stateMask & SWT.CTRL) != 0 ) {

if(text.getText(e.end-1, e.end-1).equals("V")) {

e.text = "erifyListener";

}else{

e.doit = false;

}

}

}

}

});

text.addModifyListener(new ModifyListener() {

public void modifyText(ModifyEvent e) {

System.out.println("New character count: " + text.getCharCount());

}

});

// text.append("a");

text.setSelection(1, 4);

System.out.println("getSelection:t" + text.getSelection());

System.out.println("getSelectionCount:t" + text.getSelectionCount());

System.out.println("getSelectionText:t" + text.getSelectionText());

//text.insert("ABC");

// shell.pack();

shell.setSize(300, 150);

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

public static void main(String[] args) {

new RemarksText();

}

}

再比如密码框：

UserPassword.java

复制代码 代码如下:

package swt_jface.demo4;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

public class UserPassword {

Display display = new Display();

Shell shell = new Shell(display);

Text textUser;

Text textPassword;

private void init() {

(new Label(shell, SWT.NULL)).setText("User name: ");

textUser = new Text(shell, SWT.SINGLE | SWT.BORDER);

textUser.setText("default_user");

textUser.setTextLimit(16);

(new Label(shell, SWT.NULL)).setText("Password: ");

textPassword = new Text(shell, SWT.SINGLE | SWT.BORDER);

System.out.println(textPassword.getEchoChar());

textPassword.setEchoChar('*');

}

public UserPassword() {

shell.setLayout(new GridLayout(2, false));

init();

textUser.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

textPassword.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

shell.pack();

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

public static void main(String[] args) {

new UserPassword();

}

}

下面演示使用StyledText类进行修饰Text的几个例子：

HighlightOddLine.java

复制代码 代码如下:

package swt_jface.demo4;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.LineBackgroundEvent;

import org.eclipse.swt.custom.LineBackgroundListener;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

public class HighlightOddLine {

Display display = new Display();

Shell shell = new Shell(display);

StyledText styledText;

public HighlightOddLine() {

shell.setLayout(new GridLayout());

styledText = new StyledText(shell, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);

styledText.setLayoutData(new GridData(GridData.FILL_BOTH));

styledText.addLineBackgroundListener(new LineBackgroundListener() {

public void lineGetBackground(LineBackgroundEvent event) {

if(styledText.getLineAtOffset(event.lineOffset) % 2 == 1)

event.lineBackground = shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW);

}

});

styledText.setText("Line 0rnLine 1rnLine 2rnLine 3rnLine 4rnLine 5rnLine 6");

shell.setSize(300, 150);

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

public static void main(String[] args) {

new HighlightOddLine();

}

}

SetLineBackground.java

复制代码 代码如下:

package swt_jface.demo4;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.StyleRange;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.swt.graphics.Font;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

public class SetLineBackground {

Display display = new Display();

Shell shell = new Shell(display);

StyledText styledText;

public SetLineBackground() {

shell.setLayout(new GridLayout());

styledText = new StyledText(shell, SWT.BORDER | SWT.MULTI | SWT.WRAP | SWT.H_SCROLL | SWT.V_SCROLL);

styledText.setLayoutData(new GridData(GridData.FILL_BOTH));

Font font = new Font(shell.getDisplay(), "Courier New", 12, SWT.NORMAL);

styledText.setFont(font);

styledText.setText("abcdefgrnhijklmn");

StyleRange styleRange1 = new StyleRange();

styleRange1.start = 2;

styleRange1.length = 3;

styleRange1.foreground = shell.getDisplay().getSystemColor(SWT.COLOR_BLUE);

styleRange1.background = shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW);

styleRange1.fontStyle = SWT.BOLD;

styledText.setStyleRange(styleRange1);

styledText.setLineBackground(0, 1, shell.getDisplay().getSystemColor(SWT.COLOR_GREEN));

styledText.setLineBackground(1, 1, shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW));

shell.setSize(300, 120);

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

public static void main(String[] args) {

new SetLineBackground();

}

}

SearchStyleText.java

复制代码 代码如下:

package swt_jface.demo4;

import java.util.LinkedList;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.LineStyleEvent;

import org.eclipse.swt.custom.LineStyleListener;

import org.eclipse.swt.custom.StyleRange;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.graphics.Font;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

public class SearchStyleText {

Display display = new Display();

Shell shell = new Shell(display);

StyledText styledText;

Text keywordText;

Button button;

String keyword;

public SearchStyleText() {

shell.setLayout(new GridLayout(2, false));

styledText = new StyledText(shell, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);

GridData gridData = new GridData(GridData.FILL_BOTH);

gridData.horizontalSpan = 2;

styledText.setLayoutData(gridData);

keywordText = new Text(shell, SWT.SINGLE | SWT.BORDER);

keywordText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

Font font = new Font(shell.getDisplay(), "Courier New", 12, SWT.NORMAL);

styledText.setFont(font);

button = new Button(shell, SWT.PUSH);

button.setText("Search");

button.addSelectionListener(new SelectionAdapter() {

public void widgetSelected(SelectionEvent e) {

keyword = keywordText.getText();

styledText.redraw();

}

});

styledText.addLineStyleListener(new LineStyleListener() {

public void lineGetStyle(LineStyleEvent event) {

if(keyword == null || keyword.length() == 0) {

event.styles = new StyleRange[0];

return;

}

String line = event.lineText;

int cursor = -1;

LinkedList list = new LinkedList();

while( (cursor = line.indexOf(keyword, cursor+1)) >= 0) {

list.add(getHighlightStyle(event.lineOffset+cursor, keyword.length()));

}

event.styles = (StyleRange[]) list.toArray(new StyleRange[list.size()]);

}

});

keyword = "SW";

styledText.setText("AWT, SWING rnSWT & JFACE");

shell.pack();

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

private StyleRange getHighlightStyle(int startOffset, int length) {

StyleRange styleRange = new StyleRange();

styleRange.start = startOffset;

styleRange.length = length;

styleRange.background = shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW);

return styleRange;

}

public static void main(String[] args) {

new SearchStyleText();

}

}

SampleStyledText.java

复制代码 代码如下:

package swt_jface.demo4;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.StyleRange;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.swt.graphics.Font;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

public class SampleStyledText {

Display display = new Display();

Shell shell = new Shell(display);

StyledText styledText;

public SampleStyledText() {

shell.setLayout(new GridLayout());

styledText = new StyledText(shell, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);

styledText.setLayoutData(new GridData(GridData.FILL_BOTH));

Font font = new Font(shell.getDisplay(), "Courier New", 12, SWT.NORMAL);

styledText.setFont(font);

styledText.setText("123456789rnABCDEFGHI");

StyleRange styleRange1 = new StyleRange();

styleRange1.start = 2;

styleRange1.length = 16;

styleRange1.foreground = shell.getDisplay().getSystemColor(SWT.COLOR_BLUE);

styleRange1.background = shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW);

styleRange1.fontStyle = SWT.BOLD;

StyleRange styleRange2 = new StyleRange();

styleRange2.start = 14;

styleRange2.length = 3;

styleRange2.fontStyle = SWT.NORMAL;

styleRange2.foreground = shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW);

styleRange2.background = shell.getDisplay().getSystemColor(SWT.COLOR_BLUE);

// styledText.setStyleRange(styleRange1);

// styledText.setStyleRange(styleRange2);

//styledText.setStyleRanges(new StyleRange[]{styleRange1, styleRange2});

//styledText.setStyleRanges(new StyleRange[]{styleRange2, styleRange1});

//styledText.setLineBackground(1, 1, shell.getDisplay().getSystemColor(SWT.COLOR_GRAY));

// styledText.setSelection(4);

// System.out.println(printStyleRanges(styledText.getStyleRanges()) );

// styledText.insert("000");

System.out.println(printStyleRanges(styledText.getStyleRanges()) );

// styledText.setStyleRanges(new StyleRange[]{styleRange1});

// System.out.println(printStyleRanges(styledText.getStyleRanges()) );

//shell.pack();

shell.setSize(300, 120);

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

private String printStyleRanges(StyleRange[] styleRanges) {

if(styleRanges == null)

return "null";

else if(styleRanges.length == 0)

return "[]";

StringBuffer sb = new StringBuffer();

for(int i=0; i<styleRanges.length; i++) {

sb.append(styleRanges[i] + "n");

}

return sb.toString();

}

public static void main(String[] args) {

new SampleStyledText();

}

}

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