Index: trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/PositionForAreaStrategy.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/PositionForAreaStrategy.java (revision 11756)
+++ (revision )
@@ -1,212 +1,0 @@
-// License: GPL. For details, see LICENSE file.
-package org.openstreetmap.josm.gui.mappaint.styleelement;
-
-import java.awt.Rectangle;
-import java.awt.Shape;
-import java.awt.geom.Rectangle2D;
-
-import org.openstreetmap.josm.gui.mappaint.Keyword;
-
-/**
- * This strategy defines how to place a label or icon inside the area.
- * @since 11722
- */
-public interface PositionForAreaStrategy {
- /**
- * Finds the correct position of a label / icon inside the area.
- * @param area The area to search in
- * @param nb The bounding box of the thing we are searching a place for.
- * @return The position as rectangle with the same dimension as nb. null if none was found.
- */
- Rectangle2D findLabelPlacement(Shape area, Rectangle2D nb);
-
- /**
- * Checks whether this placement strategy supports more detailed (rotation / ...) placement using a glyph vecotr.
- * @return true if it is supported.
- */
- boolean supportsGlyphVector();
-
- /**
- * Gets a strategy for the given keyword.
- * @param keyword The text position keyword.
- * @return The strategy or line if none was specified.
- * @since 11722
- */
- static PositionForAreaStrategy forKeyword(Keyword keyword) {
- return forKeyword(keyword, LINE);
- }
-
- /**
- * Gets a strategy for the given keyword.
- * @param keyword The text position keyword.
- * @param defaultStrategy The default if no strategy was recognized.
- * @return The strategy or line if none was specified.
- * @since 11722
- */
- static PositionForAreaStrategy forKeyword(Keyword keyword, PositionForAreaStrategy defaultStrategy) {
- if (keyword == null) {
- return defaultStrategy;
- }
- switch (keyword.val) {
- case "center":
- return PARTIALY_INSIDE;
- case "inside":
- return INSIDE;
- case "line":
- return LINE;
- default:
- return defaultStrategy;
- }
- }
-
- /**
- * Places the label onto the line.
- *
- * @since 11722
- */
- PositionForAreaStrategy LINE = new OnLineStrategy();
-
- /**
- * Places the label / icon so that it is completely inside the area.
- *
- * @since 11722
- */
- PositionForAreaStrategy INSIDE = new CompletelyInsideAreaStrategy();
-
- /**
- * Places the label / icon so that is is on the area.
- * @since 11722
- */
- PositionForAreaStrategy PARTIALY_INSIDE = new PartialyInsideAreaStrategy();
-
- /**
- * Places the label onto the line.
- *
- * @since 11722
- */
- class OnLineStrategy implements PositionForAreaStrategy {
- @Override
- public Rectangle2D findLabelPlacement(Shape area, Rectangle2D nb) {
- // cannot place inside area.
- return null;
- }
-
- @Override
- public boolean supportsGlyphVector() {
- return true;
- }
- }
-
- /**
- * Places the label / icon so that it is completely inside the area.
- *
- * @since 11722
- */
- class CompletelyInsideAreaStrategy implements PositionForAreaStrategy {
-
- @Override
- public Rectangle2D findLabelPlacement(Shape area, Rectangle2D nb) {
- // Using the Centroid is Nicer for buildings like: +--------+
- // but this needs to be fast. As most houses are | 42 |
- // boxes anyway, the center of the bounding box +---++---+
- // will have to do. ++
- // Centroids are not optimal either, just imagine a U-shaped house.
-
- Rectangle pb = area.getBounds();
-
- // quick check to see if label box is smaller than primitive box
- if (pb.width < nb.getWidth() || pb.height < nb.getHeight()) {
- return null;
- }
-
- final double w = pb.width - nb.getWidth();
- final double h = pb.height - nb.getHeight();
-
- final int x2 = pb.x + (int) (w / 2.0);
- final int y2 = pb.y + (int) (h / 2.0);
-
- final int nbw = (int) nb.getWidth();
- final int nbh = (int) nb.getHeight();
-
- Rectangle centeredNBounds = new Rectangle(x2, y2, nbw, nbh);
-
- // slower check to see if label is displayed inside primitive shape
- if (area.contains(centeredNBounds)) {
- return centeredNBounds;
- }
-
- // if center position (C) is not inside osm shape, try naively some other positions as follows:
- // CHECKSTYLE.OFF: SingleSpaceSeparator
- final int x1 = pb.x + (int) (w / 4.0);
- final int x3 = pb.x + (int) (3 * w / 4.0);
- final int y1 = pb.y + (int) (h / 4.0);
- final int y3 = pb.y + (int) (3 * h / 4.0);
- // CHECKSTYLE.ON: SingleSpaceSeparator
- // +-----------+
- // | 5 1 6 |
- // | 4 C 2 |
- // | 8 3 7 |
- // +-----------+
- Rectangle[] candidates = new Rectangle[] {
- new Rectangle(x2, y1, nbw, nbh),
- new Rectangle(x3, y2, nbw, nbh),
- new Rectangle(x2, y3, nbw, nbh),
- new Rectangle(x1, y2, nbw, nbh),
- new Rectangle(x1, y1, nbw, nbh),
- new Rectangle(x3, y1, nbw, nbh),
- new Rectangle(x3, y3, nbw, nbh),
- new Rectangle(x1, y3, nbw, nbh)
- };
- // Dumb algorithm to find a better placement. We could surely find a smarter one but it should
- // solve most of building issues with only few calculations (8 at most)
- for (int i = 0; i < candidates.length; i++) {
- centeredNBounds = candidates[i];
- if (area.contains(centeredNBounds)) {
- return centeredNBounds;
- }
- }
-
- // none found
- return null;
- }
-
- @Override
- public boolean supportsGlyphVector() {
- return false;
- }
- }
-
- /**
- * A strategy that places the label / icon so that is is on the area.
- *
- * The center of that place should be in the area, but the icon / label may overlap on the edges.
- * @since 11722
- */
- class PartialyInsideAreaStrategy extends CompletelyInsideAreaStrategy {
- @Override
- public Rectangle2D findLabelPlacement(Shape area, Rectangle2D nb) {
- Rectangle2D inside = super.findLabelPlacement(area, nb);
- if (inside != null) {
- return inside;
- }
-
- double nbdx = Math.max(0, (nb.getWidth() - 20) / 2);
- double nbdy = Math.max(0, (nb.getHeight() - 10) / 2);
-
- if (nbdx < .5 && nbdy < .5) {
- // we can't do any better
- return null;
- } else {
- Rectangle2D smallNb = new Rectangle2D.Double(nb.getX() + nbdx, nb.getY() + nbdy,
- nb.getWidth() - 2 * nbdx, nb.getHeight() - 2 * nbdy);
- Rectangle2D position = super.findLabelPlacement(area, smallNb);
- if (position == null) {
- return null;
- }
- return new Rectangle2D.Double(position.getX() - nbdx, position.getY() - nbdy, nb.getWidth(),
- nb.getHeight());
- }
- }
- }
-
-}