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Java Tutorial/SWT/ColorDialog - История изменений
2026-04-21T16:53:23Z
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в 17:44, 31 мая 2010
2010-05-31T17:44:26Z
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Admin: 1 версия
2010-05-31T15:20:32Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== 17. Choosing a Color ==<br />
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<OL><LI>SWT provides a class called RGB that stores RGB values.</LI><LI>RGB class holds the data that can represent a color.</LI><LI>SWT provides a class called Color that represents an actual color.</LI></OL><br />
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<source lang="java"><br />
import org.eclipse.swt.graphics.Color;<br />
import org.eclipse.swt.graphics.RGB;<br />
import org.eclipse.swt.widgets.Display;<br />
public class ColorCreate {<br />
public static void main(String[] args) {<br />
Display display = new Display();<br />
RGB rgb = new RGB(255, 0, 0); // pure red<br />
Color color = new Color(display, rgb);<br />
System.out.println(color.getBlue());<br />
display.dispose();<br />
}<br />
}</source><br />
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<!-- end source code --><br />
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== 17. Customizing the Color Selection Dialog ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
import org.eclipse.swt.graphics.Color;<br />
import org.eclipse.swt.graphics.RGB;<br />
import org.eclipse.swt.widgets.ColorDialog;<br />
import org.eclipse.swt.widgets.Display;<br />
import org.eclipse.swt.widgets.Shell;<br />
public class ColorDialogSetInitColor {<br />
public static void main(String[] args) {<br />
Display display = new Display();<br />
Shell shell = new Shell(display);<br />
ColorDialog dlg = new ColorDialog(shell);<br />
dlg.setRGB(new RGB(0, 0, 255));<br />
RGB rgb = dlg.open();<br />
if (rgb != null) {<br />
Color color = new Color(shell.getDisplay(), rgb);<br />
System.out.println(color.getRGB());<br />
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color.dispose();<br />
}<br />
display.dispose();<br />
}<br />
}</source><br />
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<!-- end source code --><br />
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== 17. Get Selected Color from ColorDialog ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
import org.eclipse.swt.graphics.Color;<br />
import org.eclipse.swt.graphics.RGB;<br />
import org.eclipse.swt.widgets.ColorDialog;<br />
import org.eclipse.swt.widgets.Display;<br />
import org.eclipse.swt.widgets.Shell;<br />
public class ColorDialogCreateGetColor {<br />
public static void main(String[] args) {<br />
Display display = new Display();<br />
Shell shell = new Shell(display);<br />
ColorDialog dlg = new ColorDialog(shell);<br />
RGB rgb = dlg.open();<br />
if (rgb != null) {<br />
Color color = new Color(shell.getDisplay(), rgb);<br />
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System.out.println(color.getRGB());<br />
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color.dispose();<br />
}<br />
display.dispose();<br />
}<br />
}</source><br />
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<!-- end source code --><br />
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== 17. Set Label Background to a color selected in ColorDialog ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
import org.eclipse.swt.SWT;<br />
import org.eclipse.swt.events.SelectionAdapter;<br />
import org.eclipse.swt.events.SelectionEvent;<br />
import org.eclipse.swt.graphics.Color;<br />
import org.eclipse.swt.graphics.RGB;<br />
import org.eclipse.swt.layout.GridLayout;<br />
import org.eclipse.swt.widgets.Button;<br />
import org.eclipse.swt.widgets.ColorDialog;<br />
import org.eclipse.swt.widgets.Display;<br />
import org.eclipse.swt.widgets.Label;<br />
import org.eclipse.swt.widgets.Shell;<br />
public class ColorDialogButtonActionSetLabelBackground {<br />
public static void main(String[] args) {<br />
Display display = new Display();<br />
final Shell shell = new Shell(display);<br />
shell.setText("Color Chooser");<br />
shell.setLayout(new GridLayout(2, false));<br />
final Label colorLabel = new Label(shell, SWT.NONE);<br />
colorLabel.setText("Color");<br />
Button button = new Button(shell, SWT.PUSH);<br />
button.setText("Color...");<br />
button.addSelectionListener(new SelectionAdapter() {<br />
public void widgetSelected(SelectionEvent event) {<br />
Color color = new Color(shell.getDisplay(), new RGB(0, 255, 0));<br />
ColorDialog dlg = new ColorDialog(shell);<br />
dlg.setRGB(colorLabel.getBackground().getRGB());<br />
dlg.setText("Choose a Color");<br />
RGB rgb = dlg.open();<br />
if (rgb != null) {<br />
color.dispose();<br />
color = new Color(shell.getDisplay(), rgb);<br />
colorLabel.setBackground(color);<br />
color.dispose();<br />
}<br />
}<br />
});<br />
shell.pack();<br />
shell.open();<br />
while (!shell.isDisposed()) {<br />
if (!display.readAndDispatch()) {<br />
display.sleep();<br />
}<br />
}<br />
display.dispose();<br />
}<br />
}</source><br />
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<!-- end source code --></div>
Admin