/**
* Initialize scale bar.
*
* @param unitType how are units shown (english/metric/crs)
* @param unitLength length of a unit in meter
* @param position coordinate where scalebar should be drawn on the graphics context
*/
public void initialize(UnitType unitType, double unitLength, Coordinate position) {
if (null == unitType) {
throw new IllegalArgumentException("please provide a unitType");
}
this.unitType = unitType;
this.unitLength = unitLength;
backGround = new Rectangle((null == getId() ? "" : getId() + "-bg"));
backGround.setBounds(new Bbox(0, 0, 5, MARKER_HEIGHT + 2 * VERTICAL_PADDING));
backGround.setStyle(STYLE_BACKGROUND);
leftMarker = new Rectangle((null == getId() ? "" : getId() + "-lm"));
leftMarker.setStyle(STYLE_MARKER);
leftMarker.setBounds(new Bbox(0, 0, 1, MARKER_HEIGHT));
rightMarker = new Rectangle((null == getId() ? "" : getId() + "-rm"));
rightMarker.setStyle(STYLE_MARKER);
rightMarker.setBounds(new Bbox(0, 0, 1, MARKER_HEIGHT));
bottomLine = new Rectangle((null == getId() ? "" : getId() + "-bm"));
bottomLine.setStyle(STYLE_MARKER);
bottomLine.setBounds(new Bbox(0, 0, 0, 1));
distance = new Text((null == getId() ? "" : getId() + "-text"));
distance.setStyle(STYLE_FONT);
dummy = new Rectangle(getId() + "-dummy");
dummy.setStyle(new ShapeStyle("#FFFFFF", 0, "#FFFFFF", 0, 0));
dummy.setBounds(new Bbox(0, 0, 1, 1));
}
/**
* Set map size.
*
* @param mapWidth map width
* @param mapHeight map height
*/
public void setMapSize(int mapWidth, int mapHeight) {
super.setMapSize(mapWidth, mapHeight);
if (null == unitType) {
throw new IllegalStateException("Please initialize scale bar before using");
}
backGround.getBounds().setX(getUpperLeftCorner().getX());
backGround.getBounds().setY(getUpperLeftCorner().getY());
bottomLine.getBounds().setX(getUpperLeftCorner().getX() + HORIZONTAL_PADDING);
bottomLine.getBounds().setY(getUpperLeftCorner().getY() + VERTICAL_PADDING + MARKER_HEIGHT);
leftMarker.getBounds().setX(getUpperLeftCorner().getX() + HORIZONTAL_PADDING);
leftMarker.getBounds().setY(getUpperLeftCorner().getY() + VERTICAL_PADDING);
rightMarker.getBounds().setY(getUpperLeftCorner().getY() + VERTICAL_PADDING);
distance.setPosition(
new Coordinate(
getUpperLeftCorner().getX() + HORIZONTAL_PADDING + 6,
getUpperLeftCorner().getY() + VERTICAL_PADDING));
}
private void updatePaintables() {
distance.setContent(formatUnits(widthInUnits));
backGround.getBounds().setWidth(widthInPixels + 2 * HORIZONTAL_PADDING);
rightMarker.getBounds().setX(leftMarker.getBounds().getX() + widthInPixels - 1);
bottomLine.getBounds().setWidth(widthInPixels);
}
@Override
public void accept(PainterVisitor visitor, Object group, Bbox bounds, boolean recursive) {
map.getVectorContext().drawGroup(group, this);
adjustScale(map.getMapModel().getMapView().getCurrentScale());
// Draw a dummy at 0,0 so that Internet Explorer knows where coordinate 0,0 is. If this is not
// drawn, the text
// will disappear, because the parent group will have coordinate 0,0 at the upper left corner of
// the union of
// all the rectangles that are drawn here.
map.getVectorContext()
.drawRectangle(this, dummy.getId(), dummy.getBounds(), (ShapeStyle) dummy.getStyle());
map.getVectorContext()
.drawRectangle(this, backGround.getId(), backGround.getBounds(), backGround.getStyle());
map.getVectorContext()
.drawRectangle(this, bottomLine.getId(), bottomLine.getBounds(), bottomLine.getStyle());
map.getVectorContext()
.drawRectangle(this, leftMarker.getId(), leftMarker.getBounds(), leftMarker.getStyle());
map.getVectorContext()
.drawRectangle(this, rightMarker.getId(), rightMarker.getBounds(), rightMarker.getStyle());
map.getVectorContext()
.drawText(
this,
distance.getId(),
distance.getContent(),
distance.getPosition(),
distance.getStyle());
}