/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.viewer.dnd.field;
import org.apache.isis.core.commons.exceptions.IsisException;
import org.apache.isis.viewer.dnd.drawing.Canvas;
import org.apache.isis.viewer.dnd.drawing.Color;
import org.apache.isis.viewer.dnd.drawing.ColorsAndFonts;
import org.apache.isis.viewer.dnd.drawing.Size;
import org.apache.isis.viewer.dnd.view.Toolkit;
import org.apache.isis.viewer.dnd.view.ViewSpecification;
import org.apache.isis.viewer.dnd.view.content.TextParseableContent;
import org.apache.isis.viewer.dnd.view.text.CursorPosition;
import org.apache.isis.viewer.dnd.view.text.TextContent;
import org.apache.log4j.Logger;
public class WrappedTextField extends TextField {
private static final Logger LOG = Logger.getLogger(WrappedTextField.class);
public WrappedTextField(final TextParseableContent content, final ViewSpecification specification,
final boolean showLines) {
super(content, specification, showLines, TextContent.WRAPPING);
}
public void setWrapping(final boolean wrapping) {
}
@Override
protected void drawLines(final Canvas canvas, final Color color, final int width) {
int baseline = getBaseline();
final int noDisplayLines = textContent.getNoDisplayLines();
for (int line = 0; line < noDisplayLines; line++) {
canvas.drawLine(HPADDING, baseline, HPADDING + width, baseline, color);
baseline += getText().getLineHeight();
}
}
@Override
protected void drawHighlight(final Canvas canvas, final int maxWidth) {
final int baseline = getBaseline();
int top = baseline - style.getAscent();
final CursorPosition from = selection.from();
final CursorPosition to = selection.to();
final String[] lines = textContent.getDisplayLines();
final int displayFromLine = textContent.getDisplayFromLine();
final int displayToLine = displayFromLine + lines.length;
for (int i = displayFromLine; i <= displayToLine; i++) {
if ((i >= from.getLine()) && (i <= to.getLine())) {
final String line = textContent.getText(i);
int start = 0;
int end = style.stringWidth(line);
if (from.getLine() == i) {
final int at = Math.min(from.getCharacter(), line.length());
start = style.stringWidth(line.substring(0, at));
}
if (to.getLine() == i) {
final int at = Math.min(to.getCharacter(), line.length());
end = style.stringWidth(line.substring(0, at));
}
canvas.drawSolidRectangle(start + (HPADDING), top, end - start, getText().getLineHeight(),
Toolkit.getColor(ColorsAndFonts.COLOR_TEXT_HIGHLIGHT));
}
top += getText().getLineHeight();
}
}
@Override
protected void drawText(final Canvas canvas, final Color textColor, final int width) {
int baseline = getBaseline();
final String[] lines = textContent.getDisplayLines();
final int cursorLine = cursor.getLine() - textContent.getDisplayFromLine();
for (int i = 0; i < lines.length; i++) {
final String chars = lines[i];
if (chars == null) {
throw new IsisException();
}
if (chars.endsWith("\n")) {
throw new RuntimeException();
}
// draw cursor
if (hasFocus() && canChangeValue().isAllowed() && cursorLine == i) {
final int at = Math.min(cursor.getCharacter(), chars.length());
final int pos = style.stringWidth(chars.substring(0, at)) + HPADDING;
canvas.drawLine(pos, (baseline + style.getDescent()), pos, baseline - style.getAscent(),
Toolkit.getColor(ColorsAndFonts.COLOR_TEXT_CURSOR));
}
// draw text
canvas.drawText(chars, HPADDING, baseline, textColor, style);
baseline += getText().getLineHeight();
}
/*
* if (end < entryLength) { int x = style.stringWidth(new String(buffer, start, end)); g.setColor(Color.red);
* g.drawString("\u00bb", x, baseline - lineHeight()); }
*/
}
@Override
protected boolean enter() {
textContent.breakBlock(cursor);
cursor.lineDown();
cursor.home();
markDamaged();
return true;
}
/**
* Sets the number of lines to display
*/
public void setNoLines(final int noLines) {
textContent.setNoDisplayLines(noLines);
}
@Override
public void setSize(final Size size) {
super.setSize(size);
textContent.setNoDisplayLines(size.getHeight() / style.getLineHeight());
}
@Override
public void setMaximumSize(final Size size) {
final int lines = Math.max(1, size.getHeight() / getText().getLineHeight());
setNoLines(lines);
final int width = Math.max(180, size.getWidth() - HPADDING);
setWidth(width);
LOG.debug(lines + " x " + width);
invalidateLayout();
}
@Override
protected void align() {
}
}