colorcomboexampler.java

开源的关于SWT开发的图形应用库

package com.swtplus.gallery;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FontDialog;
import org.eclipse.swt.widgets.Label;

import com.swtplus.utility.Styler;
import com.swtplus.widgets.PCombo;
import com.swtplus.widgets.PGroup;
import com.swtplus.widgets.combo.ColorComboStrategy;
import com.swtplus.widgets.combo.NamedRGB;
import com.swtplus.widgets.group.SimpleGroupStrategy;

public class ColorComboExampler extends Composite implements IWidgetExampler {

	private Button resize;
	private Button readOnly;
	private ColorComboStrategy foregroundComboStrat;
	private PCombo foregroundCombo;
	private ColorComboStrategy backgroundComboStrat;
	private PCombo backgroundCombo;
	protected Font font;
	private Composite exampleArea;
	private boolean firstCreate = true;
	
	private PCombo pCombo;
	private Color foreground;
	private Color background;
	private Label l;
	private Button flat;
	private Button showSWT;
	private Button showDefault;
	private Button border;

	public ColorComboExampler(Composite c) {
		super(c, SWT.NONE);
		

		Styler colorStyler = new Styler();
		colorStyler.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
		
		Styler borderStyler = new Styler();
		borderStyler.setBorderColor(Display.getCurrent().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW));
		
		SelectionListener sListener = new SelectionListener(){
			public void widgetSelected(SelectionEvent arg0) {
				recreate();
			}
			public void widgetDefaultSelected(SelectionEvent arg0) {
			}};
	
	
        this.setLayout(new FillLayout());
		final Composite container = new Composite (this,SWT.NONE);
		container.setBackground(c.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
		
		container.setLayout(new GridLayout());
		
		
		SimpleGroupStrategy sgs = new SimpleGroupStrategy(SWT.NONE);
		PGroup sgStyles = new PGroup(container,sgs);
		sgStyles.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		sgStyles.setText("Styles");
		colorStyler.add(sgStyles);
		colorStyler.add(sgStyles.getBody());
		
		sgStyles.getBody().setLayout(new GridLayout());
		
		border = new Button(sgStyles.getBody(),SWT.CHECK | SWT.FLAT);
		border.setText("PCombo.BORDER");
		colorStyler.add(border);
		border.setSelection(true);
		border.addSelectionListener(sListener);
		
		resize = new Button(sgStyles.getBody(),SWT.CHECK | SWT.FLAT);
		resize.setText("PCombo.RESIZE");
		colorStyler.add(resize);
		resize.addSelectionListener(sListener);
		
		readOnly = new Button(sgStyles.getBody(),SWT.CHECK | SWT.FLAT);
		readOnly.setText("PCombo.READ_ONLY");
		colorStyler.add(readOnly);
		readOnly.addSelectionListener(sListener);
		
		flat = new Button(sgStyles.getBody(),SWT.CHECK | SWT.FLAT);
		flat.setText("PCombo.FLAT");
		colorStyler.add(flat);
		flat.addSelectionListener(sListener);

		showSWT = new Button(sgStyles.getBody(),SWT.CHECK | SWT.FLAT);
		showSWT.setText("ColorComboStrategy.SHOW_SWTPALETTE");
		colorStyler.add(showSWT);
		showSWT.addSelectionListener(sListener);

		showDefault = new Button(sgStyles.getBody(),SWT.CHECK | SWT.FLAT);
		showDefault.setText("ColorComboStrategy.SHOW_DEFAULT");
		colorStyler.add(showDefault);
		showDefault.addSelectionListener(sListener);
		
		
		sgs = new SimpleGroupStrategy(SWT.NONE);
		PGroup sg = new PGroup(container,sgs);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		sg.setLayoutData(gd);
		sg.setText("Colors and Font");
		c = sg.getBody();
		GridLayout gl = new GridLayout();
		gl.numColumns = 2;
		c.setLayout(gl);
		colorStyler.add(sg);
		colorStyler.add(sg.getBody());
		
		Label colorForegroundLabel = new Label(c,SWT.NONE);
		colorForegroundLabel.setText("Foreground Color:");
		colorStyler.add(colorForegroundLabel);
		
		foregroundComboStrat = new ColorComboStrategy(ColorComboStrategy.SHOW_DEFAULT | ColorComboStrategy.SHOW_SWTPALETTE);
		foregroundCombo = new PCombo(c,PCombo.READ_ONLY | PCombo.FLAT,foregroundComboStrat);
		gd = new GridData(GridData.FILL_HORIZONTAL);
		foregroundCombo.setLayoutData(gd);
		borderStyler.add(foregroundCombo);

		Label backLabel = new Label(c,SWT.NONE);
		backLabel.setText("Background Color:");
		colorStyler.add(backLabel);
		
		backgroundComboStrat = new ColorComboStrategy(ColorComboStrategy.SHOW_DEFAULT | ColorComboStrategy.SHOW_SWTPALETTE);
		backgroundCombo = new PCombo(c,PCombo.READ_ONLY | PCombo.FLAT,backgroundComboStrat);
		gd = new GridData(GridData.FILL_HORIZONTAL);
		backgroundCombo.setLayoutData(gd);
		borderStyler.add(backgroundCombo);
		
		Label l = new Label(c,SWT.NONE);
		l.setText("Font:");
		colorStyler.add(l);
		
		Button fontButton = new Button(c,SWT.PUSH | SWT.FLAT);
		fontButton.setText("Change Font...");
		fontButton.addSelectionListener(new SelectionListener(){
			public void widgetDefaultSelected(SelectionEvent arg0) {
			}
			public void widgetSelected(SelectionEvent arg0) {
				FontDialog fd = new FontDialog(Display.getCurrent().getActiveShell());
				FontData fds = fd.open();
				if (fds != null){
					if (font != null)
						font.dispose();
					
					font = new Font(Display.getCurrent(),fds);
					recreate();
				}
			}});
		
		

		
		colorStyler.style();
		borderStyler.style();
		
		registerListeners(this);
	}

	public void setExampleArea(Composite area) {
		exampleArea = area;
		
		GridLayout gl = new GridLayout();
		gl.marginWidth = 100;
		area.setLayout(gl);
		recreate();
		
		firstCreate = false;		
	}
	
	public void recreate(){
		
		if (pCombo != null){
			pCombo.dispose();
		}
		if (l != null){
			l.dispose();
		}	
		
		int style = 0;
		if (showDefault.getSelection())
			style = style | ColorComboStrategy.SHOW_DEFAULT;
		if (showSWT.getSelection())
			style = style | ColorComboStrategy.SHOW_SWTPALETTE;
		
		ColorComboStrategy strategy = new ColorComboStrategy(style);
		
		
		if (foreground != null)
			foreground.dispose();
		if (background != null)
			background.dispose();
		
		style = SWT.NONE;
		if (border.getSelection())
			style = style | PCombo.BORDER;
		if (readOnly.getSelection())
			style = style | PCombo.READ_ONLY;
		if (resize.getSelection())
			style = style | PCombo.RESIZE;
		if (flat.getSelection())
			style = style | PCombo.FLAT;
		
		
		pCombo = new PCombo(exampleArea,style,strategy);

		if (firstCreate){
			foregroundComboStrat.setDefaultRGB(pCombo.getForeground().getRGB());
			foregroundCombo.setValue(new NamedRGB("Default",pCombo.getForeground().getRGB()));
			backgroundComboStrat.setDefaultRGB(pCombo.getBackground().getRGB());
			backgroundCombo.setValue(new NamedRGB("Default",pCombo.getBackground().getRGB()));

			font = null;
		} else {
			foreground = new Color(Display.getCurrent(), ((NamedRGB)foregroundCombo.getValue()).getRGB());
			pCombo.setForeground(foreground);
			
			background = new Color(Display.getCurrent(), ((NamedRGB)backgroundCombo.getValue()).getRGB());
			pCombo.setBackground(background);
			
			if (font != null)
				pCombo.setFont(font);
		}
		
		
//		GridData gd = new GridData(SWT.CENTER,SWT.TOP,true,false);
//		gd.verticalIndent = 100;
		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.verticalIndent = 100;
		
		//gd.horizontalAlignment = GridData.HORIZONTAL_ALIGN_CENTER;
		//gd.widthHint = 200;
		//gd.heightHint = 300;
		pCombo.setLayoutData(gd);
		
		l = new Label(exampleArea,SWT.NONE);
		gd = new GridData(SWT.CENTER,SWT.TOP,true,false);
		gd.heightHint = 70;
		l.setLayoutData(gd);
	
		
		exampleArea.layout();
	}

	public void registerListeners (Composite master){
		Control [] children = master.getChildren();
		for (int i = 0; i < children.length; i++) {
			Control child = children[i];
			if (child instanceof Composite){
				if (child instanceof Combo){
					Combo combo = (Combo) child;
					combo.addSelectionListener(new SelectionListener(){

						public void widgetSelected(SelectionEvent arg0) {
							//recreate();
						}

						public void widgetDefaultSelected(SelectionEvent arg0) {}
						
					});
				} else if (child instanceof PCombo){
					PCombo pCombo = (PCombo) child;
					pCombo.addModifyListener(new ModifyListener() {
						public void modifyText(ModifyEvent e) {
							recreate();
						}				
					});
				} else {
					registerListeners ((Composite) child);
				}
			}else if (child instanceof Button){
				Button button = (Button) child;
				button.addSelectionListener(new SelectionListener(){

					public void widgetSelected(SelectionEvent arg0) {
						recreate();
					}

					public void widgetDefaultSelected(SelectionEvent arg0) {}
					
				});
			}
		} 
	}

	public void dispose() {
		if (pCombo != null){
			pCombo.dispose();
		}
		if (l != null){
			l.dispose();
		}		
		super.dispose();
	}
}