001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.dialogs.relation;
003
004import java.awt.BasicStroke;
005import java.awt.Color;
006import java.awt.Component;
007import java.awt.Graphics;
008import java.awt.Graphics2D;
009import java.awt.Image;
010
011import javax.swing.JTable;
012
013import org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionType;
014import org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionType.Direction;
015import org.openstreetmap.josm.tools.ImageProvider;
016
017/**
018 * This class renders the link column of the member table. It shows if the way segments are connected or not.
019 */
020public class MemberTableLinkedCellRenderer extends MemberTableCellRenderer {
021
022    private static final Image ARROW_UP = ImageProvider.get("dialogs/relation", "arrowup").getImage();
023    private static final Image ARROW_DOWN = ImageProvider.get("dialogs/relation", "arrowdown").getImage();
024    private static final Image CORNERS = ImageProvider.get("dialogs/relation", "roundedcorners").getImage();
025    private static final Image ROUNDABOUT_RIGHT = ImageProvider.get("dialogs/relation", "roundabout_right_tiny").getImage();
026    private static final Image ROUNDABOUT_LEFT = ImageProvider.get("dialogs/relation", "roundabout_left_tiny").getImage();
027    private transient WayConnectionType value = new WayConnectionType();
028
029    @Override
030    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
031            int row, int column) {
032
033        reset();
034        if (value == null)
035            return this;
036
037        this.value = (WayConnectionType) value;
038        setToolTipText(((WayConnectionType) value).getTooltip());
039        renderBackgroundForeground(getModel(table), null, isSelected);
040        return this;
041    }
042
043    @Override
044    public void paintComponent(Graphics g) {
045        super.paintComponent(g);
046        if (value == null || !value.isValid())
047            return;
048
049        int ymax = this.getSize().height - 1;
050        int xloop = 10;
051        int xowloop = 0;
052        if (value.isOnewayLoopForwardPart) {
053            xowloop = -3;
054        }
055        if (value.isOnewayLoopBackwardPart) {
056            xowloop = 3;
057        }
058
059        int xoff = this.getSize().width / 2;
060        if (value.isLoop) {
061            xoff -= xloop / 2 - 1;
062        }
063        int w = 2;
064        int p = 2 + w + 1;
065        int y1;
066        int y2;
067
068        if (value.linkPrev) {
069            g.setColor(Color.black);
070            if (value.isOnewayHead) {
071                g.fillRect(xoff - 1, 0, 3, 1);
072            } else {
073                g.fillRect(xoff - 1 + xowloop, 0, 3, 1);
074            }
075            y1 = 0;
076        } else {
077            if (value.isLoop) {
078                g.setColor(Color.black);
079                y1 = 5;
080                g.drawImage(CORNERS, xoff, y1-3, xoff+3, y1, 0, 0, 3, 3, new Color(0, 0, 0, 0), null);
081                g.drawImage(CORNERS, xoff+xloop-2, y1-3, xoff+xloop+1, y1, 2, 0, 5, 3, new Color(0, 0, 0, 0), null);
082                g.drawLine(xoff+3, y1-3, xoff+xloop-3, y1-3);
083            } else {
084                g.setColor(Color.red);
085                if (value.isOnewayHead) {
086                    g.drawRect(xoff-1, p - 3 - w, w, w);
087                } else {
088                    g.drawRect(xoff-1 + xowloop, p - 1 - w, w, w);
089                }
090                y1 = p;
091            }
092        }
093
094        if (value.linkNext) {
095            g.setColor(Color.black);
096            if (value.isOnewayTail) {
097                g.fillRect(xoff - 1, ymax, 3, 1);
098            } else {
099                g.fillRect(xoff - 1 + xowloop, ymax, 3, 1);
100            }
101            y2 = ymax;
102        } else {
103            if (value.isLoop) {
104                g.setColor(Color.black);
105                y2 = ymax - 5;
106                g.fillRect(xoff-1, y2+2, 3, 3);
107                g.drawLine(xoff, y2, xoff, y2+2);
108                g.drawImage(CORNERS, xoff+xloop-2, y2+1, xoff+xloop+1, y2+4, 2, 2, 5, 5, new Color(0, 0, 0, 0), null);
109                g.drawLine(xoff+3-1, y2+3, xoff+xloop-3, y2+3);
110            } else {
111                g.setColor(Color.red);
112                if (value.isOnewayTail) {
113                    g.drawRect(xoff-1, ymax - p + 3, w, w);
114                } else {
115                    g.drawRect(xoff-1 + xowloop, ymax - p + 1, w, w);
116                }
117                y2 = ymax - p;
118            }
119        }
120
121        /* vertical lines */
122        g.setColor(Color.black);
123        if (value.isLoop) {
124            g.drawLine(xoff+xloop, y1, xoff+xloop, y2);
125        }
126
127        if (value.isOnewayHead) {
128            setDotted(g);
129            y1 = 7;
130
131            int[] xValues = {xoff - xowloop + 1, xoff - xowloop + 1, xoff};
132            int[] yValues = {ymax, y1+1, 1};
133            g.drawPolyline(xValues, yValues, 3);
134            unsetDotted(g);
135            g.drawLine(xoff + xowloop, y1+1, xoff, 1);
136        }
137
138        if (value.isOnewayTail) {
139            setDotted(g);
140            y2 = ymax - 7;
141
142            int[] xValues = {xoff+1, xoff - xowloop + 1, xoff - xowloop + 1};
143            int[] yValues = {ymax-1, y2, y1};
144            g.drawPolyline(xValues, yValues, 3);
145            unsetDotted(g);
146            g.drawLine(xoff + xowloop, y2, xoff, ymax-1);
147        }
148
149        if ((value.isOnewayLoopForwardPart || value.isOnewayLoopBackwardPart) && !value.isOnewayTail && !value.isOnewayHead) {
150            setDotted(g);
151            g.drawLine(xoff - xowloop+1, y1, xoff - xowloop+1, y2 + 1);
152            unsetDotted(g);
153        }
154
155        if (!value.isOnewayLoopForwardPart && !value.isOnewayLoopBackwardPart) {
156            g.drawLine(xoff, y1, xoff, y2);
157        }
158
159        g.drawLine(xoff+xowloop, y1, xoff+xowloop, y2);
160
161        /* special icons */
162        Image arrow;
163        switch (value.direction) {
164        case FORWARD:
165            arrow = ARROW_DOWN;
166            break;
167        case BACKWARD:
168            arrow = ARROW_UP;
169            break;
170        default:
171            arrow = null;
172        }
173        if (value.direction == Direction.ROUNDABOUT_LEFT) {
174            g.drawImage(ROUNDABOUT_LEFT, xoff-6, 1, null);
175        } else if (value.direction == Direction.ROUNDABOUT_RIGHT) {
176            g.drawImage(ROUNDABOUT_RIGHT, xoff-6, 1, null);
177        }
178
179        if (!value.isOnewayLoopForwardPart && !value.isOnewayLoopBackwardPart &&
180                (arrow != null)) {
181            g.drawImage(arrow, xoff-3, (y1 + y2) / 2 - 2, null);
182        }
183
184        if (value.isOnewayLoopBackwardPart && value.isOnewayLoopForwardPart) {
185            if (arrow == ARROW_DOWN) {
186                arrow = ARROW_UP;
187            } else if (arrow == ARROW_UP) {
188                arrow = ARROW_DOWN;
189            }
190        }
191
192        if (arrow != null) {
193            g.drawImage(arrow, xoff+xowloop-3, (y1 + y2) / 2 - 2, null);
194        }
195    }
196
197    private static void setDotted(Graphics g) {
198        ((Graphics2D) g).setStroke(new BasicStroke(
199                1f,
200                BasicStroke.CAP_BUTT,
201                BasicStroke.CAP_BUTT,
202                5f,
203                new float[] {1f, 2f},
204                0f));
205    }
206
207    private static void unsetDotted(Graphics g) {
208        ((Graphics2D) g).setStroke(new BasicStroke());
209    }
210}