package com.swtplus.gallery;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;

public class Splash {
	
	Shell shell;
	Shell parent;
	private int height;
	private int width;
	
	private Image title = GalleryImageRegistry.getImage(this.getClass(),"title.png");
	private Image signature = GalleryImageRegistry.getImage(this.getClass(),"signature.png");
	private ControlListener controlListener;
	
	public Splash(Shell parent){
		
		this.parent = parent;
		
		try {
			go(parent);
		} catch (InterruptedException e) {
		}		
	}

	private void go(final Shell parent) throws InterruptedException{
		shell = new Shell(parent,SWT.NO_TRIM);
		
		//shell.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));

//		shell.addFocusListener(new FocusListener() {
//			public void focusLost(FocusEvent e) {
//			}		
//			public void focusGained(FocusEvent e) {
//				shell.getDisplay().asyncExec(new Runnable() {
//					public void run() {
//						parent.setFocus();
//						try {
//							close();
//						} catch (InterruptedException e1) {
//						}
//					}				
//				});
//			}		
//		});
		
		shell.addMouseListener(new MouseListener() {
			public void mouseUp(MouseEvent arg0) {
			}
			public void mouseDown(MouseEvent arg0) {
				shell.getDisplay().asyncExec(new Runnable() {
					public void run() {
						parent.setFocus();
						try {
							close();
						} catch (InterruptedException e1) {
						}
					}				
				});
			}
			public void mouseDoubleClick(MouseEvent arg0) {
			}		
		});
		
		resize();
		
		shell.setVisible(true);
		
		parent.getDisplay().readAndDispatch();
		
		controlListener = new ControlListener() {
			public void controlResized(ControlEvent e) {
				resize();
			}		
			public void controlMoved(ControlEvent e) {
				resize();
			}		
		};
		
		parent.addControlListener(controlListener);
		
		createContents();
		
		parent.getDisplay().asyncExec(new Runnable(){
			public void run() {
				resize();
			}		
		});
		
	}
	
	private void createContents(){
		
		final String text = "The SWTPlus Demo is a showcase of the available SWTPlus widgets.\r\n\r\nMost widgets are designed with specific strategies determining appearance, much \r\nlike Swing's UI delegates.  This demo is designed to showcase each individual \r\nstrategy available for each widget.";
		
		shell.setLayout(new FillLayout());
		final Composite c = new Composite(shell,SWT.NO_BACKGROUND | SWT.DOUBLE_BUFFERED);
		c.setEnabled(false);
		c.addPaintListener(new PaintListener() {
			public void paintControl(PaintEvent e) { 
				e.gc.setForeground(c.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
				e.gc.setBackground(c.getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION));
				e.gc.fillGradientRectangle(0,0,c.getSize().x,c.getSize().y,true);

				e.gc.drawImage(title,50,50);
				
				e.gc.drawImage(signature,55,85);
				
				e.gc.setForeground(c.getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND));
				e.gc.drawText(text,70,165,true);
				
				e.gc.setForeground(c.getDisplay().getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));
				e.gc.drawString("Copyright 2005 Near Corner Software",681,536,true);
				
				e.gc.setForeground(c.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
				e.gc.drawString("Copyright 2005 Near Corner Software",680,535,true);

				e.gc.setForeground(c.getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND));
				e.gc.drawString("Click Anywhere to Continue",70,280,true);
			}		
		});
		
		final Color color1 = shell.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND);
		final Color color2 = shell.getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND);

		Runnable run = new Runnable() {
			int i = 0;
			public void run() {
				if (shell.isDisposed())
					return;
				GC gc = new GC(c);
				i ++;
				if (i %2 == 0){
					gc.setForeground(color1);					
				} else {
					gc.setForeground(color2);
				}
				gc.drawString("Click Anywhere to Continue",70,280,true);
				gc.dispose();
				if (i %2 == 0){
					shell.getDisplay().timerExec(500,this);					
				} else {
					shell.getDisplay().timerExec(3000,this);
				}
			}		
		};
		run.run();

		shell.layout();		

	}
		
	private void close() throws InterruptedException{
		Thread.sleep(10);
		
		int x = 0;
		int y = 0;
		
		do {
			Region old = shell.getRegion();
			Region r = new Region();
			if (height - 10 < 5){
				y -= height - 5/2;
				height = 5;
			} else {
				height -= 10;
				y += 5;
			}
			r.add(x,y,width,height);
			shell.setRegion(r);
			if (old != null)
				old.dispose();
			
			parent.redraw();
			parent.getDisplay().update();
			Thread.sleep(1);
			
		} while (height > 5);
		
		do {
			Region old = shell.getRegion();
			Region r = new Region();
			width -= 8;
			x += 4;
			r.add(x,y,width,height);
			shell.setRegion(r);
			if (old != null)
				old.dispose();
			
			parent.redraw();
			parent.getDisplay().update();
			Thread.sleep(1);
		} while (width > 10);
		

		if (shell.getRegion() != null)
			shell.getRegion().dispose();		
		shell.dispose();
		
		parent.removeControlListener(controlListener);
	}



	protected void resize() {
		if (shell.isDisposed())
			return;
		if (parent.isDisposed())
			return;
		
		Point p = parent.getDisplay().map(parent,null,0,0);
		
		height = parent.getClientArea().height;
		width = parent.getClientArea().width;
		
		shell.setBounds(p.x,p.y,width,height);	
		
	}
}