/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
/*
 * MetalEditorTabCellRenderer.java
 *
 * Created on December 2, 2003, 9:30 PM
 */

package org.netbeans.swing.tabcontrol.plaf;

import javax.swing.*;
import java.awt.*;

/**
 * Renderer for editor tabs in metal l&f
 *
 * @author Tim Boudreau
 */
class MetalEditorTabCellRenderer extends AbstractTabCellRenderer {
    private static final MetalTabPainter metalborder = new MetalTabPainter();
    private static final MetalRightClippedTabPainter rightBorder = new MetalRightClippedTabPainter();
    private static final MetalLeftClippedTabPainter leftBorder = new MetalLeftClippedTabPainter();

    /**
     * Creates a new instance of MetalEditorTabCellRenderer
     */
    public MetalEditorTabCellRenderer() {
        super(leftBorder, metalborder, rightBorder, new Dimension(34, 29));
        setBorder(metalborder);
    }

    protected int getCaptionYAdjustment() {
        return 0;
    }

    private static class MetalTabPainter implements TabPainter {
        public Insets getBorderInsets(Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;
            return new Insets(mtr.isSelected() ? 3 : 5,
                              mtr.isSelected() ? 10 : 9, 1, 0); //XXX
        }

        public boolean supportsCloseButton(JComponent renderer) {
            return true;
        }

        public boolean isBorderOpaque() {
            return true;
        }

        public void paintBorder(Component c, Graphics g, int x, int y,
                                int width, int height) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;
            Polygon p = getInteriorPolygon(c);
            
            //Draw the highlight first, one pixel over, to get the left side and
            //diagonal highlight (the right edge will get cut off, as we want)
            g.setColor(UIManager.getColor("controlHighlight")); //NOI18N
            g.drawPolygon(p);
            p.translate(-1, 0);
            Insets ins = getBorderInsets(c);
            g.drawLine(x + 6, y + ins.top + 1, x + width - 1, y + ins.top + 1);

            if (mtr.isSelected()) {
                //draw the dark portion of the drag texture dots
                g.drawLine(4, ins.top + 6, 4, ins.top + 6);
                g.drawLine(2, ins.top + 8, 2, ins.top + 8);

                g.drawLine(4, ins.top + 10, 4, ins.top + 10);
                g.drawLine(2, ins.top + 12, 2, ins.top + 12);

                g.drawLine(4, ins.top + 14, 4, ins.top + 14);
                g.drawLine(2, ins.top + 16, 2, ins.top + 16);
            }
            
            //Draw the dark polygon
            g.setColor(UIManager.getColor("controlDkShadow")); //NOI18N
            g.drawPolygon(p);

            if (mtr.isSelected()) {
                //draw the dark portion of the drag texture dots
                g.drawLine(5, ins.top + 7, 5, ins.top + 7);
                g.drawLine(3, ins.top + 9, 3, ins.top + 9);

                g.drawLine(5, ins.top + 11, 5, ins.top + 11);
                g.drawLine(3, ins.top + 13, 3, ins.top + 13);

                g.drawLine(5, ins.top + 15, 5, ins.top + 15);
                g.drawLine(3, ins.top + 17, 3, ins.top + 17);
            }

            if (!mtr.isSelected()) {
                g.setColor(UIManager.getColor("controlDkShadow")); //NOI18N
                g.drawLine(x, mtr.getHeight() - 1, mtr.getWidth() - 1,
                           mtr.getHeight() - 1);
            }
        }

        public Polygon getInteriorPolygon(Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;

            Insets ins = getBorderInsets(c);
            Polygon p = new Polygon();
            int x = mtr.isLeftmost() ? 1 : 0;
            int y = 0;

            int width = mtr.isLeftmost() ? c.getWidth() - 1 : c.getWidth();
            int height = mtr.isSelected() ?
                    c.getHeight() + 3 : c.getHeight();

            p.addPoint(x, y + ins.top + 6);
            p.addPoint(x + 6, y + ins.top);
            p.addPoint(x + width, y + ins.top);
            p.addPoint(x + width, y + height);
            p.addPoint(x, y + height);
            return p;
        }

        public void paintInterior(Graphics g, Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;

            Polygon p = getInteriorPolygon(c);
            g.fillPolygon(p);
            Rectangle r = new Rectangle();
            getCloseButtonRectangle(mtr, r, new Rectangle(0, 0,
                                                          mtr.getWidth(),
                                                          mtr.getHeight()));
            r.x += 2;
            r.y += 2;
            r.width -= 4;
            r.height -= 4;

            if (mtr.inCloseButton() && mtr.isPressed()) {
                Color col = ColorUtil.getMiddle(mtr.getBackground(),
                                                mtr.getBackground().darker());
                g.setColor(col);
                g.fillRect(r.x - 2, r.y - 2, r.width + 3, r.height + 3);
            }

            if (mtr.isSelected()) {
                g.setColor(UIManager.getColor("controlHighlight")); //NOI18N
                r.translate(1, 1);
                g.drawLine(r.x, r.y, r.x + r.width - 1, r.y + r.height - 1);
                g.drawLine(r.x, r.y + r.height - 1, r.x + r.width - 1, r.y);
                r.translate(-1, -1);
            }

            g.setColor(mtr.getForeground());
            g.drawLine(r.x, r.y, r.x + r.width - 1, r.y + r.height - 1);
            g.drawLine(r.x, r.y + r.height - 1, r.x + r.width - 1, r.y);

            if (mtr.inCloseButton()) {
                Color col = mtr.getBackground().darker();//ColorUtil.getMiddle(mtr.getBackground(), UIManager.getColor("controlShadow")); //NOI18N
                if (mtr.isPressed()) {
                    col = col.darker();
                }
                g.setColor(col);
                g.drawRect(r.x - 2, r.y - 2, r.width + 3, r.height + 3);
            }
        }

        public void getCloseButtonRectangle(JComponent jc,
                                            final Rectangle rect,
                                            Rectangle bounds) {
            Insets ins = getBorderInsets(jc);

            rect.y = bounds.y + ins.top;

            rect.height = bounds.height - rect.y;
            rect.x = bounds.x + bounds.width - 10;
            rect.width = 5;

            rect.y += (rect.height / 2) - 2;
            rect.height = 5;
            
            //Issue nnn
            rect.width += 4;
            rect.height += 4;
            rect.x -= 2;
            rect.y -= 2;
        }

        public boolean supportsCloseButton() {
            return true;  
        }
    }

    private static class MetalLeftClippedTabPainter implements TabPainter {

        public Insets getBorderInsets(Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;
            return new Insets(mtr.isSelected() ? 3 : 5,
                              mtr.isSelected() ? 10 : 9, 1, 0); //XXX
        }

        public boolean isBorderOpaque() {
            return true;
        }

        public Polygon getInteriorPolygon(Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;

            Insets ins = getBorderInsets(c);
            Polygon p = new Polygon();
            //Ensure the left edge is out of bounds
            int x = -1;
            int y = ins.top;

            int width = c.getWidth();
            int height = mtr.isSelected() ?
                    c.getHeight() + 3 : c.getHeight();

            p.addPoint(x, y);
            p.addPoint(x + width, y);
            p.addPoint(x + width, y + height);
            p.addPoint(x, y + height);

            return p;
        }

        public void paintBorder(Component c, Graphics g, int x, int y,
                                int width, int height) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;
            g.setColor(UIManager.getColor("controlHighlight")); //NOI18N
            Polygon p = getInteriorPolygon(c);

            p.translate(0, 1);
            g.drawPolygon(p);
            p.translate(0, -1);
            g.setColor(UIManager.getColor("controlDkShadow")); //NOI18N
            g.drawPolygon(p);
            if (!mtr.isSelected()) {
                g.drawLine(x, y + height - 1, x + width, y + height - 1);
            }
        }

        public void paintInterior(Graphics g, Component c) {
            Polygon p = getInteriorPolygon(c);
            g.fillPolygon(p);
        }

        public void getCloseButtonRectangle(JComponent jc, Rectangle rect,
                                            Rectangle bounds) {
            bounds.setBounds(-20, -20, 0, 0);
        }

        public boolean supportsCloseButton(JComponent renderer) {
            return false;
        }
    }

    private static class MetalRightClippedTabPainter implements TabPainter {
        public Insets getBorderInsets(Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;
            return new Insets(mtr.isSelected() ? 3 : 5,
                              mtr.isSelected() ? 10 : 9, 1, 0); //XXX
        }

        public boolean isBorderOpaque() {
            return true;
        }

        public Polygon getInteriorPolygon(Component c) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;

            Insets ins = getBorderInsets(c);
            Polygon p = new Polygon();
            int x = mtr.isLeftmost() ? 1 : 0;
            int y = 0;

            int width = c.getWidth() + 2;
            int height = mtr.isSelected() ?
                    c.getHeight() + 3 : c.getHeight();

            p.addPoint(x, y + ins.top + 6);
            p.addPoint(x + 6, y + ins.top);
            p.addPoint(x + width, y + ins.top);
            p.addPoint(x + width, y + height);
            p.addPoint(x, y + height);
            return p;
        }

        public void paintBorder(Component c, Graphics g, int x, int y,
                                int width, int height) {
            MetalEditorTabCellRenderer mtr = (MetalEditorTabCellRenderer) c;
            Polygon p = getInteriorPolygon(c);
            
            //Draw the highlight first, one pixel over, to get the left side and
            //diagonal highlight (the right edge will get cut off, as we want)
            g.setColor(UIManager.getColor("controlHighlight")); //NOI18N
            g.drawPolygon(p);
            p.translate(-1, 0);
            Insets ins = getBorderInsets(c);
            g.drawLine(x + 6, y + ins.top + 1, x + width - 1, y + ins.top + 1);

            if (mtr.isSelected()) {
                //draw the light portion of the drag texture dots
                g.drawLine(4, ins.top + 6, 4, ins.top + 6);
                g.drawLine(2, ins.top + 8, 2, ins.top + 8);

                g.drawLine(4, ins.top + 10, 4, ins.top + 10);
                g.drawLine(2, ins.top + 12, 2, ins.top + 12);

                g.drawLine(4, ins.top + 14, 4, ins.top + 14);
                g.drawLine(2, ins.top + 16, 2, ins.top + 16);
            }
            
            //Draw the dark polygon
            g.setColor(UIManager.getColor("controlDkShadow")); //NOI18N
            g.drawPolygon(p);

            if (mtr.isSelected()) {
                //draw the dark portion of the drag texture dots
                g.drawLine(5, ins.top + 7, 5, ins.top + 7);
                g.drawLine(3, ins.top + 9, 3, ins.top + 9);

                g.drawLine(5, ins.top + 11, 5, ins.top + 11);
                g.drawLine(3, ins.top + 13, 3, ins.top + 13);

                g.drawLine(5, ins.top + 15, 5, ins.top + 15);
                g.drawLine(3, ins.top + 17, 3, ins.top + 17);
            }

            if (!mtr.isSelected()) {
                g.setColor(UIManager.getColor("controlDkShadow")); //NOI18N
                g.drawLine(x, c.getHeight() - 1, c.getWidth() - 1,
                           c.getHeight() - 1);
            }
        }

        public void paintInterior(Graphics g, Component c) {
            Polygon p = getInteriorPolygon(c);
            g.fillPolygon(p);
        }

        public void getCloseButtonRectangle(JComponent jc, Rectangle rect,
                                            Rectangle bounds) {
            bounds.setBounds(-20, -20, 0, 0);
        }

        public boolean supportsCloseButton(JComponent renderer) {
            return false;
        }
    }
}