annotationdraglistener.java

来自「Java生成PDF Java生成PDF Java生成PDF」· Java 代码 · 共 46 行

// $Id: AnnotationDragListener.java,v 1.2 2007/05/21 15:02:59 mike Exp $

package org.faceless.pdf2.viewer2.feature;

import java.awt.event.*;
import java.awt.*;
import java.awt.geom.*;
import org.faceless.pdf2.*;
import org.faceless.pdf2.viewer2.*;

class AnnotationDragListener implements MouseListener, MouseMotionListener {
    private int origx, origy;
    private final PagePanel pagepanel;
    private final Component comp;
    private final PDFAnnotation annot;

    AnnotationDragListener(PagePanel panel, Component comp, PDFAnnotation annot) {
        this.pagepanel = panel;
        this.comp = comp;
        this.annot = annot;
        this.origx = this.origy = -1;
    }
    public void mouseClicked(MouseEvent event) { }
    public void mouseEntered(MouseEvent event) {
        comp.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
    }
    public void mouseExited(MouseEvent event) {
        comp.setCursor(Cursor.getDefaultCursor());
    }
    public void mousePressed(MouseEvent event) { 
        origx = event.getX();
        origy = event.getY();
    }
    public void mouseReleased(MouseEvent event) {
        origx = -1;
    }
    public void mouseDragged(MouseEvent event) {
        event.translatePoint(comp.getX()-origx, comp.getY()-origy);
        Point2D p = pagepanel.getPDFPoint(event.getX(), event.getY());
        float[] r = annot.getRectangle();
        annot.setRectangle((float)p.getX(), (float)p.getY(), (float)p.getX()+(r[2]-r[0]), (float)p.getY()+(r[1]-r[3]));
        pagepanel.getDocumentPanel().redraw(annot);
    }
    public void mouseMoved(MouseEvent event) {}
}