canvasscrolllistener.java

一个eclipse插件源代码。用于web开发

/*
 * $Header: /home/cvs/WEBPUMP2.0/WebPumpIDE_Src/WebPumpIDE/src/com/webpump/ui/module/control/CanvasScrollListener.java,v 1.1.1.1 2004/07/01 09:07:49 wang_j Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/07/01 09:07:49 $
 *
 * ====================================================================
 *
 * The NanJing HopeRun(IT-FOREST) Software License, Version 2.0.0
 *
 * Copyright 2003-2004 by NanJing HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and
 *                        IT Forest Corporation
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 * You shall not disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into with
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 */
package com.webpump.ui.module.control;

import java.util.Vector;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;

import com.webpump.ui.module.model.Model;
import com.webpump.ui.module.model.Modules;
import com.webpump.ui.module.model.Page;
import com.webpump.ui.module.model.Resource;

/**
 * @author shi_l
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class CanvasScrollListener implements ControlListener{

	/** data object model */
	private Model m_objModel;

	/** 
	 * constructor 
	 * @param data object model
	 */
	public CanvasScrollListener(Model model) {
		m_objModel = model;
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent)
	 */
	public void controlMoved(ControlEvent e) {
		GC gc = m_objModel.getResource().getGc();		
		Display display = m_objModel.getResource().getDisplay();
		
		if(m_objModel.getResource().getState() == 2) {
			m_objModel.getResource().setOldPoint(-1, -1);
			m_objModel.getResource().getCanvas().redraw();
			m_objModel.getResource().setOldPoint(-1, -1);
		}
		if(m_objModel.getResource().getState() == 4) {
			int hot = m_objModel.getResource().getHotPageNum();
			Vector pages = ((Modules) m_objModel.getDataObject()).getPages().getPage();
			if(hot != -1) {
				((Page) pages.get(hot)).eraserHotPoint(gc, display);
				m_objModel.getResource().setHotPageNum(-1);
			}
		}
		if(m_objModel.getResource().getState() == 5 || m_objModel.getResource().getState() == 8) {
			Vector oldPoints = m_objModel.getResource().getOldPoints();
			if(oldPoints.size() != 0) {
				gc.setForeground(display.getSystemColor(SWT.COLOR_YELLOW));
				gc.setXORMode(true);
				gc.setLineStyle(SWT.LINE_DOT);
				if (oldPoints.size() != 0) {
					Resource.drawPolyline(gc, oldPoints);
					oldPoints.removeAllElements();
				}
			}
			int hot = m_objModel.getResource().getHotPageNum();
			Vector pages = ((Modules) m_objModel.getDataObject()).getPages().getPage();
			if(hot != -1) {
				((Page) pages.get(hot)).eraserHotPoint(gc, display);
				m_objModel.getResource().setHotPageNum(-1);
			}
		} else if(m_objModel.getResource().getState() == 6) {
			Point oldPoint = m_objModel.getResource().getOldPoint();
	
			gc.setXORMode(true);
			gc.setLineStyle(SWT.LINE_DOT);
			gc.setForeground(display.getSystemColor(SWT.COLOR_YELLOW));
			if (oldPoint.x != -1) {
				gc.drawRectangle(oldPoint.x, oldPoint.y, Page.WIDTH, Page.HEIGHT);
				oldPoint.x = -1;
			}
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent)
	 */
	public void controlResized(ControlEvent e) {
	}

}