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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.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Insets;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.ImageObserver;
import javax.swing.SwingUtilities;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.cobraparser.html.domimpl.HTMLBaseInputElement;
import org.cobraparser.html.domimpl.HTMLElementImpl;
import org.cobraparser.html.domimpl.ImageEvent;
import org.cobraparser.html.domimpl.ImageListener;
import org.cobraparser.html.style.HtmlValues;
import org.cobraparser.ua.ImageResponse;
import org.cobraparser.ua.ImageResponse.State;
import org.cobraparser.util.gui.WrapperLayout;
import cz.vutbr.web.css.CSSProperty.VerticalAlign;
class InputImageControl extends BaseInputControl implements ImageListener {
private static final long serialVersionUID = -2242175570423778798L;
// private JButton button;
private boolean mouseBeingPressed;
public InputImageControl(final HTMLBaseInputElement modelNode) {
super(modelNode);
this.setLayout(WrapperLayout.getInstance());
// JButton button = new LocalButton();
// this.button = button;
// button.setMargin(RBlockViewport.ZERO_INSETS);
// button.setBorder(null);
// this.add(button);
modelNode.addImageListener(this);
this.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(final MouseEvent e) {
mouseBeingPressed = true;
repaint();
}
// public void mouseExited(MouseEvent e) {
// mouseBeingPressed = false;
// repaint();
// }
@Override
public void mouseReleased(final MouseEvent e) {
mouseBeingPressed = false;
repaint();
HtmlController.getInstance().onPressed(modelNode, e, e.getX(), e.getY());
}
});
}
private Dimension preferredSize;
private int declaredWidth;
private int declaredHeight;
private ImageResponse imageResponse;
@Override
public void reset(final int availWidth, final int availHeight) {
super.reset(availWidth, availHeight);
final HTMLElementImpl element = this.controlElement;
final int dw = HtmlValues.getOldSyntaxPixelSize(element.getAttribute("width"), availWidth, -1);
final int dh = HtmlValues.getOldSyntaxPixelSize(element.getAttribute("height"), availHeight, -1);
this.declaredWidth = dw;
this.declaredHeight = dh;
this.preferredSize = this.createPreferredSize(dw, dh);
}
@Override
public VerticalAlign getVAlign() {
final HTMLElementImpl element = this.controlElement;
return element.getRenderState().getVerticalAlign();
}
@Override
public void paintComponent(final Graphics g) {
super.paintComponent(g);
final Dimension size = this.getSize();
final Insets insets = this.getInsets();
synchronized (this) {
}
final ImageResponse imageResponse = this.imageResponse;
if (imageResponse.state == State.loaded) {
g.drawImage(imageResponse.img, insets.left, insets.top, size.width - insets.left - insets.right, size.height - insets.top - insets.bottom, this);
} else {
// TODO: alt
}
if (this.mouseBeingPressed) {
final Color over = new Color(255, 100, 100, 64);
final Color oldColor = g.getColor();
try {
g.setColor(over);
g.fillRect(0, 0, size.width, size.height);
} finally {
g.setColor(oldColor);
}
}
}
@Override
public Dimension getPreferredSize() {
final Dimension ps = this.preferredSize;
return ps == null ? new Dimension(0, 0) : ps;
}
public Dimension createPreferredSize(int dw, int dh) {
final ImageResponse imgResponse = this.imageResponse;
if (!imgResponse.isDecoded()) {
return new Dimension(dw == -1 ? 0 : dw, dh == -1 ? 0 : dh);
}
assert (imgResponse.img != null);
final @NonNull Image img = imgResponse.img;
if (dw == -1) {
dw = HtmlValues.scaleToDevicePixels(img.getWidth(this));
}
if (dh == -1) {
dh = HtmlValues.scaleToDevicePixels(img.getHeight(this));
}
return new Dimension(dw, dh);
}
private final boolean checkPreferredSizeChange() {
final Dimension newPs = this.createPreferredSize(this.declaredWidth, this.declaredHeight);
final Dimension ps = this.preferredSize;
if (ps == null) {
return true;
}
if ((ps.width != newPs.width) || (ps.height != newPs.height)) {
this.preferredSize = newPs;
return true;
} else {
return false;
}
}
/*
* (non-Javadoc)
*
* @see java.awt.Component#imageUpdate(java.awt.Image, int, int, int, int,
* int)
*/
@Override
public boolean imageUpdate(final Image img, final int infoflags, final int x, final int y, final int w, final int h) {
if (((infoflags & ImageObserver.ALLBITS) != 0) || ((infoflags & ImageObserver.FRAMEBITS) != 0)) {
SwingUtilities.invokeLater(() -> {
if (!checkPreferredSizeChange()) {
repaint();
} else {
ruicontrol.preferredSizeInvalidated();
}
});
}
return true;
}
/*
* (non-Javadoc)
*
* @see java.awt.Component#imageUpdate(java.awt.Image, int, int, int, int,
* int)
*/
public void imageUpdate(final Image img, final int w, final int h) {
SwingUtilities.invokeLater(() -> {
if (!checkPreferredSizeChange()) {
repaint();
} else {
ruicontrol.preferredSizeInvalidated();
}
});
}
@Override
public boolean paintSelection(final Graphics g, final boolean inSelection, final RenderableSpot startPoint, final RenderableSpot endPoint) {
return inSelection;
}
public void imageLoaded(final ImageEvent event) {
// Implementation of ImageListener. Invoked in a request thread most likely.
final ImageResponse imageResponseLocal = event.imageResponse;
// ImageIcon imageIcon = new ImageIcon(image);
// this.button.setIcon(imageIcon);
this.imageResponse = imageResponseLocal;
if (imageResponseLocal.isDecoded()) {
assert (imageResponseLocal.img != null);
@Nullable Image image = imageResponseLocal.img;
final int width = image.getWidth(this);
final int height = image.getHeight(this);
this.imageUpdate(image, width, height);
}
}
public void imageAborted() {
// do nothing
}
public void resetInput() {
// NOP
}
@Override
public boolean isReadyToPaint() {
return imageResponse.isReadyToPaint();
}
// private static class LocalButton extends JButton {
// public void revalidate() {
// // ignore
// }
//
// public void repaint() {
// // ignore
// }
// }
}