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Cobra is the rendering engine designed for LoboBrowser
/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The Lobo Project
This library 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 library 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 library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Contact info: [email protected]
*/
package org.cobraparser.html.renderer;
import java.awt.Color;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Insets;
import org.cobraparser.html.HtmlRendererContext;
import org.cobraparser.html.domimpl.NodeImpl;
import org.cobraparser.html.style.ListStyle;
import org.cobraparser.html.style.RenderState;
import org.cobraparser.ua.UserAgentContext;
import org.w3c.dom.html.HTMLElement;
class RListItem extends BaseRListElement {
private static final int BULLET_WIDTH = 5;
private static final int BULLET_HEIGHT = 5;
private static final int BULLET_RMARGIN = 5;
private static final int BULLET_SPACE_WIDTH = 36;
public RListItem(final NodeImpl modelNode, final int listNesting, final UserAgentContext pcontext, final HtmlRendererContext rcontext,
final FrameContext frameContext,
final RenderableContainer parentContainer, final RCollection parent) {
super(modelNode, listNesting, pcontext, rcontext, frameContext, parentContainer);
// this.defaultMarginInsets = new java.awt.Insets(0, BULLET_SPACE_WIDTH, 0,
// 0);
}
@Override
public int getViewportListNesting(final int blockNesting) {
return blockNesting + 1;
}
@Override
public void invalidateLayoutLocal() {
super.invalidateLayoutLocal();
this.value = null;
}
private static final Integer UNSET = new Integer(Integer.MIN_VALUE);
private Integer value = null;
private Integer getValue() {
Integer value = this.value;
if (value == null) {
final HTMLElement node = (HTMLElement) this.modelNode;
final String valueText = node == null ? null : node.getAttribute("value");
if (valueText == null) {
value = UNSET;
} else {
try {
value = Integer.valueOf(valueText);
} catch (final NumberFormatException nfe) {
value = UNSET;
}
}
this.value = value;
}
return value;
}
private int count;
@Override
public void doLayout(final int availWidth, final int availHeight, final boolean expandWidth, final boolean expandHeight,
final FloatingBoundsSource floatBoundsSource,
final int defaultOverflowX, final int defaultOverflowY, final boolean sizeOnly) {
super.doLayout(availWidth, availHeight, expandWidth, expandHeight, floatBoundsSource, defaultOverflowX, defaultOverflowY, sizeOnly);
// Note: Count must be calculated even if layout is valid.
final RenderState renderState = this.modelNode.getRenderState();
final Integer value = this.getValue();
if (value == UNSET) {
this.count = renderState.incrementCount(DEFAULT_COUNTER_NAME, this.listNesting);
} else {
final int newCount = value.intValue();
this.count = newCount;
renderState.resetCount(DEFAULT_COUNTER_NAME, this.listNesting, newCount + 1);
}
}
@Override
public void paintShifted(final Graphics g) {
super.paintShifted(g);
final RenderState rs = this.modelNode.getRenderState();
final Insets marginInsets = this.marginInsets;
final RBlockViewport layout = this.bodyLayout;
final ListStyle listStyle = this.listStyle;
int bulletType = listStyle == null ? ListStyle.TYPE_UNSET : listStyle.type;
if (bulletType != ListStyle.TYPE_NONE) {
if (bulletType == ListStyle.TYPE_UNSET) {
RCollection parent = this.getOriginalOrCurrentParent();
if (!(parent instanceof RList)) {
parent = parent.getOriginalOrCurrentParent();
}
if (parent instanceof RList) {
final ListStyle parentListStyle = ((RList) parent).listStyle;
bulletType = parentListStyle == null ? ListStyle.TYPE_DISC : parentListStyle.type;
} else {
bulletType = ListStyle.TYPE_DISC;
}
}
// Paint bullets
final Color prevColor = g.getColor();
g.setColor(rs.getColor());
try {
final Insets insets = this.getInsets(this.hasHScrollBar, this.hasVScrollBar);
final Insets paddingInsets = this.paddingInsets;
final int baselineOffset = layout.getFirstBaselineOffset();
final int bulletRight = (marginInsets == null ? 0 : marginInsets.left) - BULLET_RMARGIN;
final int bulletBottom = insets.top + baselineOffset + (paddingInsets == null ? 0 : paddingInsets.top);
final int bulletTop = bulletBottom - BULLET_HEIGHT;
final int bulletLeft = bulletRight - BULLET_WIDTH;
final int bulletNumber = this.count;
String numberText = null;
switch (bulletType) {
case ListStyle.TYPE_DECIMAL:
numberText = bulletNumber + ".";
break;
case ListStyle.TYPE_LOWER_ALPHA:
numberText = ((char) ('a' + bulletNumber)) + ".";
break;
case ListStyle.TYPE_UPPER_ALPHA:
numberText = ((char) ('A' + bulletNumber)) + ".";
break;
case ListStyle.TYPE_DISC:
g.fillOval(bulletLeft, bulletTop, BULLET_WIDTH, BULLET_HEIGHT);
break;
case ListStyle.TYPE_CIRCLE:
g.drawOval(bulletLeft, bulletTop, BULLET_WIDTH, BULLET_HEIGHT);
break;
case ListStyle.TYPE_SQUARE:
g.fillRect(bulletLeft, bulletTop, BULLET_WIDTH, BULLET_HEIGHT);
break;
}
if (numberText != null) {
final FontMetrics fm = g.getFontMetrics();
final int numberLeft = bulletRight - fm.stringWidth(numberText);
final int numberY = bulletBottom;
g.drawString(numberText, numberLeft, numberY);
}
} finally {
g.setColor(prevColor);
}
}
}
}