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287
Java/ZZViewComponent.java
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287
Java/ZZViewComponent.java
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/*
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ZZViewComponent.java
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*
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* Copyright (c) 1999-2000, Ted Nelson and Tuomas Lukka
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*
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* You may use and distribute under the terms of either the GNU Lesser
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* General Public License, either version 2 of the license or,
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* at your choice, any later version. Alternatively, you may use and
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* distribute under the terms of the XPL.
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*
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* See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of
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* the licenses.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the README
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* file for more details.
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*
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*/
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/*
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* Written by Tuomas Lukka
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*/
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package org.gzigzag;
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import java.awt.event.*;
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import java.awt.*;
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import java.util.*;
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/** A generic view as an AWT component.
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*/
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abstract public class ZZViewComponent extends Panel implements ZZView,
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MouseListener, MouseMotionListener {
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public static final String rcsid = "$Id: ZZViewComponent.java,v 1.48.2.4 2002/02/10 12:39:20 bfallenstein Exp $";
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static public boolean dbg = false;
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private static void p(String s) { if(dbg) ZZLogger.log(s); }
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private static void pa(String s) { ZZLogger.log(s); }
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ZZCell viewCell;public ZZCell getViewcell() { return viewCell; }
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ZZKeyBindings kb;
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ZZView ctrlView, dataView;
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boolean needreraster = false;
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boolean validraster = false;
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ZZViewComponent parentView;
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Component pushedViewPanel;
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ZZViewComponent pushedView;
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/** ZZViewComponent per viewCell.
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*/
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static Hashtable cpts = new Hashtable();
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static void redoCtrls(ZZCell vc) {
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if(vc == null) throw new ZZError("vc == null");
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if(vc.getRankLength("d.ctrlview") > 2)
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throw new ZZError("d.ctrlview rank with more than two cells!");
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ZZCell cc, dc;
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if((cc = vc.s("d.ctrlview", -1)) != null)
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dc = vc;
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else if((dc = vc.s("d.ctrlview", 1)) != null)
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cc = vc;
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else
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cc = (dc = vc);
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ZZViewComponent cv = (ZZViewComponent) cpts.get(cc);
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ZZViewComponent dv = (ZZViewComponent) cpts.get(dc);
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if(cv == null || dv == null)
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// other ZZViewComponent doesn't exist yet
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cv = (dv = (ZZViewComponent) cpts.get(vc));
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cv.setViewPair(dv, true);
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dv.setViewPair(cv, false);
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/* // does somebody want it like this? -->
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ZZCell h = vc.h("d.ctrlview", -1);
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ZZViewComponent c = (ZZViewComponent)cpts.get(h);
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if(c != null) {
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while((h=h.s("d.ctrlview", 1)) != null) {
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ZZViewComponent c1 = (ZZViewComponent)cpts.get(h);
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if(c1 != null)
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c1.setCtrl(c);
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}
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}
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*/
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}
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public void setViewcell(ZZCell vc0) {
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viewCell = vc0;
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kb = new ZZKeyBindings1();
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cpts.put(vc0, this);
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redoCtrls(viewCell);
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}
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public void setViewPair(ZZView other, boolean ctrl) {
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if(ctrl) {
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ctrlView = this;
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dataView = other;
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} else {
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ctrlView = other;
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dataView = this;
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}
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}
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ZZViewComponent(ZZCell viewCell0) {
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this();
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setViewcell(viewCell0);
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}
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ZZViewComponent() {
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addFocusListener(new FocusListener() {
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public void focusGained(FocusEvent e) {
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p(this + " focusgained");
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repaint();
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}
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public void focusLost(FocusEvent e) {
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p(this + " focuslost");
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repaint();
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}
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});
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addMouseListener(this);
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addMouseMotionListener(this);
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addComponentListener(new ComponentAdapter() {
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public void componentResized(ComponentEvent e) {
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re_raster_soon();
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}
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});
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enableEvents(AWTEvent.KEY_EVENT_MASK);
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}
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public void addNotify() {
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ZZUpdateManager.addView(this);
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super.addNotify();
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}
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public void removeNotify() {
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ZZUpdateManager.rmView(this);
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super.removeNotify();
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}
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protected void processEvent(AWTEvent e) {
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p("ProcessEvent: "+e);
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super.processEvent(e);
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}
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protected void processKeyEvent(KeyEvent e) {
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p("ProcessKeyEvent: "+e);
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// Apply any necessary key event hacks to this event.
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e = ZZKeyHacks.keyEventHack(e);
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p("After KeyEventHack: "+e);
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int id = e.getID();
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if(id == e.KEY_PRESSED) {
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int kc = e.getKeyCode();
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// These sometimes caused unshifted characters to
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// appear. Very odd.
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if(kc == e.VK_SHIFT || kc == e.VK_CONTROL || kc == e.VK_ALT
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|| kc == e.VK_META) {
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super.processKeyEvent(e);
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return;
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}
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ZZUpdateManager.freeze();
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try {
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//e.consume();
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if(kbd != null)
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kb.perform(e, kbd.dataView, kbd.ctrlView, null);
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else
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kb.perform(e, dataView, ctrlView, null);
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ZZObsTrigger.runObsQueue();
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} finally { ZZUpdateManager.thaw(); }
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}
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// We don't let it go upstairs...
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// super.processKeyEvent(e);
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}
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public void mouseEntered(MouseEvent e) {
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// XXX ???
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requestFocus();
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}
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public void mouseExited(MouseEvent e) {
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}
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public void mousePressed(MouseEvent e) {
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}
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public void mouseReleased(MouseEvent e) {
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}
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public void mouseClicked(MouseEvent e) {
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// System.out.println("MOUENT");
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// System.out.println(e);
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// kb.perform(k, ZZView.this);
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requestFocus();
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// System.out.println("MOURET");
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e.consume();
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}
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public void mouseDragged(MouseEvent e) {
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}
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public void mouseMoved(MouseEvent e) {
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// XXX ???
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requestFocus();
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}
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public void destroy() {
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ZZUpdateManager.rmView(this);
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}
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ZZViewComponent kbd;
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public void setKbdStandin(ZZViewComponent v) {
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kbd = v;
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}
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public void re_raster_soon() {
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// p(this + " RERASTERSOON");
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needreraster = true;
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repaint(50);
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}
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boolean wasInPaint;
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float fract;
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boolean dblbuf = true;
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private Image cache;
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private Dimension cacheSize;
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/** Paint this component into the given graphics object,
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* without consideration for double buffering.
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*/
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public abstract void paintInto(Graphics gr);
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// Paint into the buffer and then into gr.
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public void paint(Graphics gr) {
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if(dblbuf) {
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// XXX Really necessary every time?
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Dimension d = getSize();
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if(cache == null ||
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cacheSize == null ||
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!cacheSize.equals(d)) {
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cacheSize = d;
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p("Creating cache: "+d.width+" "+d.height);
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cache=null;
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if(d.width>0&&d.height>0)
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cache = createImage(d.width, d.height);
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}
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if(cache == null) {
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paintInto(gr);
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} else {
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try {
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Graphics g = cache.getGraphics();
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paintInto(g);
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// g.dispose() ???
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gr.drawImage(cache, 0, 0, null);
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// Dispose this as well?
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} catch(Throwable t) {
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// FIXME ARGH!
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cache = null;
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paintInto(gr);
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}
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}
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} else {
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// Single-buffer. Flashes.
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paintInto(gr);
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}
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}
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public void update(Graphics gr) { paint(gr); }
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public void paintNow(float fract) {
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wasInPaint = false;
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this.fract = fract;
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// p("Paintnow "+this+" "+parentView+" "+reraster+" "+anim);
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Graphics gr = getGraphics();
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if (gr == null) {
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repaint(30);
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return;
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}
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paint(gr);
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}
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}
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