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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]
*/
/*
* Created on May 21, 2005
*/
package org.cobraparser.html.renderer;
import java.awt.Color;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import org.cobraparser.html.domimpl.ModelNode;
import org.cobraparser.html.style.RenderState;
final class RBlank extends BaseBoundableRenderable {
// TODO: Is there a need for RBlank's at all?
public final int ascentPlusLeading;
private final FontMetrics fontMetrics;
public RBlank(final ModelNode me, final FontMetrics fm, final RenderableContainer container, final int ascentPlusLeading,
final int width, final int height) {
super(container, me);
this.fontMetrics = fm;
this.ascentPlusLeading = ascentPlusLeading;
// Dimensions set when constructed.
this.width = width;
this.height = height;
}
@Override
protected void invalidateLayoutLocal() {
}
public boolean onMouseClick(final MouseEvent event, final int x, final int y) {
final ModelNode me = this.modelNode;
if (me != null) {
return HtmlController.getInstance().onMouseClick(me, event, x, y);
} else {
return true;
}
}
public boolean onDoubleClick(final MouseEvent event, final int x, final int y) {
final ModelNode me = this.modelNode;
if (me != null) {
return HtmlController.getInstance().onDoubleClick(me, event, x, y);
} else {
return true;
}
}
public boolean onMousePressed(final MouseEvent event, final int x, final int y) {
final ModelNode me = this.modelNode;
if (me != null) {
return HtmlController.getInstance().onMouseDown(me, event, x, y);
} else {
return true;
}
}
public boolean onMouseReleased(final MouseEvent event, final int x, final int y) {
final ModelNode me = this.modelNode;
if (me != null) {
return HtmlController.getInstance().onMouseUp(me, event, x, y);
} else {
return true;
}
}
public boolean onMouseDisarmed(final MouseEvent event) {
final ModelNode me = this.modelNode;
if (me != null) {
return HtmlController.getInstance().onMouseDisarmed(me, event);
} else {
return true;
}
}
/*
* (non-Javadoc)
*
* @see
* net.sourceforge.xamj.domimpl.markup.Renderable#paint(java.awt.Graphics)
*/
public final void paint(final Graphics g) {
final RenderState rs = this.modelNode.getRenderState();
if (rs.getVisibility() != RenderState.VISIBILITY_VISIBLE) {
// Just don't paint it.
return;
}
final Color bkg = rs.getTextBackgroundColor();
if (bkg != null) {
final Color oldColor = g.getColor();
try {
g.setColor(bkg);
g.fillRect(0, 0, this.width, this.height);
} finally {
g.setColor(oldColor);
}
}
final int td = rs.getTextDecorationMask();
if (td != 0) {
if ((td & RenderState.MASK_TEXTDECORATION_UNDERLINE) != 0) {
final int lineOffset = this.ascentPlusLeading + 2;
g.drawLine(0, lineOffset, this.width, lineOffset);
}
if ((td & RenderState.MASK_TEXTDECORATION_LINE_THROUGH) != 0) {
final FontMetrics fm = this.fontMetrics;
final int lineOffset = fm.getLeading() + ((fm.getAscent() + fm.getDescent()) / 2);
g.drawLine(0, lineOffset, this.width, lineOffset);
}
if ((td & RenderState.MASK_TEXTDECORATION_OVERLINE) != 0) {
final int lineOffset = this.fontMetrics.getLeading();
g.drawLine(0, lineOffset, this.width, lineOffset);
}
if ((td & RenderState.MASK_TEXTDECORATION_BLINK) != 0) {
// TODO
}
}
final Color over = rs.getOverlayColor();
if (over != null) {
final Color oldColor = g.getColor();
try {
g.setColor(over);
g.fillRect(0, 0, width, height);
} finally {
g.setColor(oldColor);
}
}
}
/*
* (non-Javadoc)
*
* @see
* org.xamjwg.html.renderer.BoundableRenderable#paintSelection(java.awt.Graphics
* , boolean, org.xamjwg.html.renderer.RenderablePoint,
* org.xamjwg.html.renderer.RenderablePoint)
*/
public boolean paintSelection(final Graphics g, final boolean inSelection, final RenderableSpot startPoint, final RenderableSpot endPoint) {
if ((this == startPoint.renderable) || (this == endPoint.renderable)) {
if (inSelection) {
return false;
}
} else if (!inSelection) {
return false;
}
g.setColor(SELECTION_COLOR);
g.setXORMode(SELECTION_XOR);
g.fillRect(0, 0, this.width, this.height);
g.setPaintMode();
return true;
}
public boolean extractSelectionText(final StringBuffer buffer, final boolean inSelection, final RenderableSpot startPoint,
final RenderableSpot endPoint) {
if ((this == startPoint.renderable) || (this == endPoint.renderable)) {
if (inSelection) {
return false;
}
} else if (!inSelection) {
return false;
}
buffer.append(' ');
return true;
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.renderer.BoundableRenderable#getRenderable(int, int)
*/
public RenderableSpot getLowestRenderableSpot(final int x, final int y) {
return new RenderableSpot(this, x, y);
}
public boolean isContainedByNode() {
return true;
}
public boolean onRightClick(final MouseEvent event, final int x, final int y) {
final ModelNode me = this.modelNode;
if (me != null) {
return HtmlController.getInstance().onContextMenu(me, event, x, y);
} else {
return true;
}
}
}