/*
* {{{ header & license
* Copyright (c) 2007 Wisconsin Court System
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* }}}
*/
package org.xhtmlrenderer.pdf;
import java.awt.Color;
import org.w3c.dom.Element;
import org.xhtmlrenderer.css.parser.FSColor;
import org.xhtmlrenderer.layout.LayoutContext;
import org.xhtmlrenderer.render.BlockBox;
import org.xhtmlrenderer.render.RenderingContext;
import com.lowagie.text.pdf.PdfAnnotation;
import com.lowagie.text.pdf.PdfAppearance;
import com.lowagie.text.pdf.PdfBorderDictionary;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfFormField;
import com.lowagie.text.pdf.PdfWriter;
public class CheckboxFormField extends AbstractFormField {
private static final String FIELD_TYPE = "Checkbox";
public CheckboxFormField(LayoutContext c, BlockBox box, int cssWidth,
int cssHeight) {
initDimensions(c, box, cssWidth, cssHeight);
}
protected String getFieldType() {
return FIELD_TYPE;
}
public void paint(RenderingContext c, ITextOutputDevice outputDevice, BlockBox box) {
PdfContentByte cb = outputDevice.getCurrentPage();
PdfWriter writer = outputDevice.getWriter();
PdfFormField field = PdfFormField.createCheckBox(writer);
Element e = box.getElement();
String onValue = getValue(e);
boolean checked = isChecked(e);
float width = outputDevice.getDeviceLength(getWidth());
float height = outputDevice.getDeviceLength(getHeight());
FSColor color = box.getStyle().getColor();
FSColor darker = box.getEffBackgroundColor(c).darkenColor();
createAppearances(cb, field, onValue, width, height, true, color, darker);
createAppearances(cb, field, onValue, width, height, false, color, darker);
field.setWidget(outputDevice.createLocalTargetArea(c, box),
PdfAnnotation.HIGHLIGHT_INVERT);
field.setFieldName(getFieldName(outputDevice, e));
field.setBorderStyle(new PdfBorderDictionary(0.0f, 0));
field.setValueAsName(checked ? onValue : OFF_STATE);
field.setAppearanceState(checked ? onValue : OFF_STATE);
if (isReadOnly(e)) {
field.setFieldFlags(PdfFormField.FF_READ_ONLY);
}
writer.addAnnotation(field);
}
private void createAppearances(PdfContentByte cb, PdfFormField field,
String onValue, float width, float height, boolean normal,
FSColor color, FSColor darker) {
// XXX Should cache this by width and height, but they're small so
// don't bother for now...
PdfAppearance tpOff = cb.createAppearance(width, height);
PdfAppearance tpOn = cb.createAppearance(width, height);
setStrokeColor(tpOn, color);
setStrokeColor(tpOff, color);
float sLen = Math.min(width - reduce(width), height - reduce(height));
if (!normal) {
setFillColor(tpOff, darker);
tpOff.rectangle(0, 0, width, height);
tpOff.fill();
setFillColor(tpOn, darker);
tpOn.rectangle(0, 0, width, height);
tpOn.fill();
}
tpOn.moveTo(width / 2 - sLen / 2, height / 2 - sLen / 2);
tpOn.lineTo(width / 2 + sLen / 2, height / 2 + sLen / 2);
tpOn.moveTo(width / 2 - sLen / 2, height / 2 + sLen / 2);
tpOn.lineTo(width / 2 + sLen / 2, height / 2 - sLen / 2);
tpOn.stroke();
if (normal) {
field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, OFF_STATE, tpOff);
field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, onValue, tpOn);
} else {
field.setAppearance(PdfAnnotation.APPEARANCE_DOWN, OFF_STATE, tpOff);
field.setAppearance(PdfAnnotation.APPEARANCE_DOWN, onValue, tpOn);
}
}
private float reduce(float value) {
return Math.min(value, Math.max(2.0f, 0.08f * value));
}
public int getBaseline() {
return 0;
}
public boolean hasBaseline() {
return false;
}
}