/*
* Copyright 1995-2000 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.awt.motif;
import java.awt.*;
import java.awt.peer.*;
import java.awt.event.*;
public class MCheckboxPeer extends MComponentPeer implements CheckboxPeer {
private boolean inUpCall = false;
private boolean inInit=false;
native void create(MComponentPeer parent);
native void pSetState(boolean state);
native boolean pGetState();
public native void setLabel(String label);
public native void setCheckboxGroup(CheckboxGroup g);
void initialize() {
Checkbox t = (Checkbox)target;
inInit=true;
setState(t.getState());
setCheckboxGroup(t.getCheckboxGroup());
super.initialize();
inInit=false;
}
public MCheckboxPeer(Checkbox target) {
super(target);
}
public boolean isFocusable() {
return true;
}
public void setState(boolean state) {
if (inInit) {
pSetState(state);
} else if (!inUpCall && (state != pGetState())) {
pSetState(state);
// 4135725 : do not notify on programatic changes
// notifyStateChanged(state);
}
}
private native int getIndicatorSize();
private native int getSpacing();
public Dimension getMinimumSize() {
String lbl = ((Checkbox)target).getLabel();
if (lbl == null) {
lbl = "";
}
FontMetrics fm = getFontMetrics(target.getFont());
/*
* Spacing (number of pixels between check mark and label text) is
* currently set to 0, but in case it ever changes we have to add
* it. 8 is a heuristic number. Indicator size depends on font
* height, so we don't need to include it in checkbox's height
* calculation.
*/
int wdth = fm.stringWidth(lbl) + getIndicatorSize() + getSpacing() + 8;
int hght = Math.max(fm.getHeight() + 8, 15);
return new Dimension(wdth, hght);
}
void notifyStateChanged(boolean state) {
Checkbox cb = (Checkbox) target;
ItemEvent e = new ItemEvent(cb,
ItemEvent.ITEM_STATE_CHANGED,
cb.getLabel(),
state ? ItemEvent.SELECTED : ItemEvent.DESELECTED);
postEvent(e);
}
// NOTE: This method is called by privileged threads.
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
void action(boolean state) {
final Checkbox cb = (Checkbox)target;
final boolean newState = state;
MToolkit.executeOnEventHandlerThread(cb, new Runnable() {
public void run() {
CheckboxGroup cbg = cb.getCheckboxGroup();
/* Bugid 4039594. If this is the current Checkbox in
* a CheckboxGroup, then return to prevent deselection.
* Otherwise, it's logical state will be turned off,
* but it will appear on.
*/
if ((cbg != null) && (cbg.getSelectedCheckbox() == cb) &&
cb.getState()) {
inUpCall = false;
cb.setState(true);
return;
}
// All clear - set the new state
cb.setState(newState);
notifyStateChanged(newState);
} // run()
});
} // action()
static final int SIZE = 19;
static final int BORDER = 4;
static final int SIZ = SIZE - BORDER*2 - 1;
/*
* Print the native component by rendering the Motif look ourselves.
* ToDo(aim): needs to query native motif for more accurate size and
* color information; need to render check mark.
*/
public void print(Graphics g) {
Checkbox cb = (Checkbox)target;
Dimension d = cb.size();
Color bg = cb.getBackground();
Color fg = cb.getForeground();
Color shadow = bg.darker();
int x = BORDER;
int y = ((d.height - SIZE) / 2) + BORDER;
g.setColor(cb.getState()? shadow : bg);
if (cb.getCheckboxGroup() != null) {
g.fillOval(x, y, SIZ, SIZ);
draw3DOval(g, bg, x, y, SIZ, SIZ, !(cb.getState()));
if (cb.getState()) {
g.setColor(fg);
g.fillOval(x + 3, y + 3, SIZ - 6, SIZ - 6);
}
} else {
g.fillRect(x, y, SIZ, SIZ);
draw3DRect(g, bg, x, y, SIZ, SIZ, !(cb.getState()));
if (cb.getState()) {
g.setColor(fg);
g.drawLine(x+1, y+1, x+SIZ-1, y+SIZ-1);
g.drawLine(x+1, y+SIZ-1, x+SIZ-1, y+1);
}
}
g.setColor(fg);
String lbl = cb.getLabel();
if (lbl != null) {
// REMIND: align
g.setFont(cb.getFont());
FontMetrics fm = g.getFontMetrics();
g.drawString(lbl, SIZE,
(d.height + fm.getMaxAscent() - fm.getMaxDescent()) / 2);
}
target.print(g);
}
/**
* DEPRECATED
*/
public Dimension minimumSize() {
return getMinimumSize();
}
}