util.ui.PictureAreaIcon.java Source code

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Here is the source code for util.ui.PictureAreaIcon.java

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/*
 * TV-Browser
 * Copyright (C) 04-2003 Martin Oberhauser (martin_oat@yahoo.de)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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 util.ui;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import java.awt.image.RGBImageFilter;

import javax.swing.GrayFilter;
import javax.swing.Icon;
import javax.swing.ImageIcon;

import org.apache.commons.lang.StringUtils;

import tvbrowser.core.Settings;
import devplugin.Program;
import devplugin.ProgramFieldType;

/**
 * A class for painting a picture with copyright and description info.
 *
 * @author Ren Mach
 * @since 2.2.2
 */
public class PictureAreaIcon implements Icon {

    private static final int MAX_COLOR_DIFF = 20;
    /**
     * the description text icon will be null, if the string to be shown is empty
     */
    private TextAreaIcon mDescriptionText;
    private TextAreaIcon mCopyrightText;
    private ImageIcon mScaledIcon;
    private Program mProgram;
    private boolean mIsExpired;
    private boolean mIsGrayFilter;
    private int mDescriptionLines;

    /**
     * Constructor for programs with no picture or if pictures for
     * a program should not be shown.
     */
    public PictureAreaIcon() {
    }

    /**
     * Constructor for programs with picture.
     *
     * @param p The program with the picture.
     * @param f The font for the description.
     * @param width The width of this area.
     * @param showDescription If description should be shown.
     * @param grayFilter If the image should be filtered to gray if the program is expired.
     * @param zoom If the picture should be zoomed to width.
     */
    public PictureAreaIcon(Program p, Font f, int width, boolean showDescription, boolean grayFilter,
            boolean zoom) {
        mProgram = p;
        mIsExpired = false;
        mIsGrayFilter = grayFilter;
        if (showDescription) {
            mDescriptionLines = Settings.propPictureDescriptionLines.getInt();
        } else {
            mDescriptionLines = 0;
        }

        byte[] picture = p.getBinaryField(ProgramFieldType.PICTURE_TYPE);

        if (picture != null) {
            ImageIcon imic = new ImageIcon(picture);

            if (width == -1) {
                width = imic.getIconWidth() + 6;
            }

            if (imic.getIconWidth() > width - 6 || (zoom && imic.getIconWidth() != width)) {
                mScaledIcon = (ImageIcon) UiUtilities.scaleIcon(imic, width - 6);
            } else {
                mScaledIcon = imic;
            }
        }

        mCopyrightText = new TextAreaIcon(p.getTextField(ProgramFieldType.PICTURE_COPYRIGHT_TYPE),
                f.deriveFont((float) (f.getSize() * 0.9)), width - 6);
        String pictureText = showDescription ? p.getTextField(ProgramFieldType.PICTURE_DESCRIPTION_TYPE) : "";
        if (StringUtils.isNotEmpty(pictureText)) {
            mDescriptionText = new TextAreaIcon(pictureText, f, width - 6);
            mDescriptionText.setMaximumLineCount(mDescriptionLines);
        } else {
            // reset show description as the string is empty
            mDescriptionLines = 0;
        }
    }

    public int getIconHeight() {
        if (mScaledIcon == null) {
            return 0;
        } else {
            return mScaledIcon.getIconHeight() + mCopyrightText.getIconHeight()
                    + (mDescriptionLines > 0 ? mDescriptionText.getIconHeight() : 0) + 10;
        }
    }

    public int getIconWidth() {
        return mCopyrightText.getIconWidth() + 6;
    }

    public void paintIcon(final Component c, Graphics g, int x, int y) {
        if (mScaledIcon == null) {
            return;
        }

        y += 2;

        Color color = g.getColor();

        if (!colorsInEqualRange(c.getBackground(), c.getForeground()) && !mProgram.isExpired()) {
            g.setColor(c.getBackground());
            g.fillRect(x, y, getIconWidth(), getIconHeight() - 2);
        }

        g.setColor(color);
        g.drawRect(x, y, getIconWidth() - 1, getIconHeight() - 3);

        y += 3;
        x += 3;

        if (mIsGrayFilter && !mIsExpired && mProgram.isExpired()) {
            ImageFilter filter = new GrayFilter(true, 60);
            mScaledIcon
                    .setImage(c.createImage(new FilteredImageSource(mScaledIcon.getImage().getSource(), filter)));
            mIsExpired = true;
        }

        if (c.getForeground().getAlpha() != 255) {
            ImageFilter filter = new RGBImageFilter() {
                public int filterRGB(int x, int y, int rgb) {
                    if ((rgb & 0xff000000) != 0) {
                        return (rgb & 0xffffff) | (c.getForeground().getAlpha() << 24);
                    }
                    return rgb;
                }
            };

            mScaledIcon
                    .setImage(c.createImage(new FilteredImageSource(mScaledIcon.getImage().getSource(), filter)));
        }

        mScaledIcon.paintIcon(c, g, x, y);

        /*
        if(!mProgram.isExpired()) {
          g.setColor(color);
        } else {
          g.setColor(color);
        }
        */
        mCopyrightText.paintIcon(null, g, x, y + mScaledIcon.getIconHeight());
        if (mDescriptionLines > 0 && mDescriptionText != null) {
            mDescriptionText.paintIcon(null, g, x,
                    y + mScaledIcon.getIconHeight() + mCopyrightText.getIconHeight() + 1);
        }
        g.setColor(color);
    }

    private boolean colorsInEqualRange(final Color c1, final Color c2) {
        return Math.abs(c1.getRed() - c2.getRed()) <= MAX_COLOR_DIFF
                && Math.abs(c1.getBlue() - c2.getBlue()) <= MAX_COLOR_DIFF
                && Math.abs(c1.getGreen() - c2.getGreen()) <= MAX_COLOR_DIFF;
    }
}