X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.district.maps%2Fsrc%2Forg%2Fsimantics%2Fmaps%2Fsg%2FMapLocationZoomInfoNode.java;fp=org.simantics.district.maps%2Fsrc%2Forg%2Fsimantics%2Fmaps%2Fsg%2FMapLocationZoomInfoNode.java;h=bad499e6f02cb7ca6408608495b1a23753ccc304;hb=17c52752fcc15ee30a7790b96e3976214077761b;hp=0000000000000000000000000000000000000000;hpb=835710a4f22ec2d91c287295fb176a0af62d1186;p=simantics%2Fdistrict.git diff --git a/org.simantics.district.maps/src/org/simantics/maps/sg/MapLocationZoomInfoNode.java b/org.simantics.district.maps/src/org/simantics/maps/sg/MapLocationZoomInfoNode.java new file mode 100644 index 00000000..bad499e6 --- /dev/null +++ b/org.simantics.district.maps/src/org/simantics/maps/sg/MapLocationZoomInfoNode.java @@ -0,0 +1,182 @@ +package org.simantics.maps.sg; + +import java.awt.AlphaComposite; +import java.awt.BasicStroke; +import java.awt.Color; +import java.awt.Font; +import java.awt.FontMetrics; +import java.awt.Graphics2D; +import java.awt.geom.AffineTransform; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; +import java.util.Locale; + +import org.simantics.g2d.participant.MouseUtil; +import org.simantics.g2d.participant.MouseUtil.MouseInfo; +import org.simantics.maps.MapScalingTransform; +import org.simantics.scenegraph.g2d.G2DNode; + +public class MapLocationZoomInfoNode extends G2DNode { + + private static final long serialVersionUID = 7994492218791569147L; + + private static final Color GRAY = new Color(100, 100, 100); + + protected boolean enabled = true; + + private MouseUtil util; + + @Override + public void render(Graphics2D g2d) { + if (!enabled) + return; + + AffineTransform ot = g2d.getTransform(); + Color originalColor = g2d.getColor(); + g2d.transform(transform); + + AffineTransform tr = g2d.getTransform(); + + g2d.setTransform(new AffineTransform()); + // do the rendering magic + + Font rulerFont = new Font("Tahoma", Font.PLAIN, 9); + + //g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); + g2d.setStroke(new BasicStroke(1)); + g2d.setColor(new Color(0.9f, 0.9f, 0.9f, 0.75f)); + + Rectangle2D bounds = g2d.getClipBounds(); + if (bounds == null) + return; // FIXME + + int zoomLevel = MapScalingTransform.zoomLevel(ot); + MouseInfo mouseInfo = util.getMouseInfo(0); + + double startLat; + double startLon; + if (mouseInfo != null && mouseInfo.canvasPosition != null) { + Point2D canvasPosition = mouseInfo.canvasPosition; + double cx = canvasPosition.getX(); + double cy = canvasPosition.getY(); + + startLat = yToLatitude(-cy / transform.getScaleY()); + startLon = xToLongitude(cx / transform.getScaleX()); + } else { + startLat = 0; + startLon = 0; + } + + String str = "X: " + formatValue(startLon, MAX_DIGITS) + ", Y: " + formatValue(startLat, MAX_DIGITS) + ", Z: " + zoomLevel; + FontMetrics fm = g2d.getFontMetrics(); + Rectangle2D r = fm.getStringBounds(str, g2d); + + double pixels = r.getWidth() + 10; + double scaleRight = bounds.getMaxX() - 20; + double newScaleLeft = scaleRight - pixels; + double y = bounds.getMaxY() - 65; + g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.8f)); + + + Rectangle2D vertical = new Rectangle2D.Double(newScaleLeft, y, pixels, 20); + g2d.fill(vertical); + + g2d.setColor(GRAY); + g2d.setFont(rulerFont); + + + g2d.setColor(Color.BLACK); + g2d.drawString(str, (int)newScaleLeft + 5, (int)y + 15); + + g2d.setColor(originalColor); + g2d.setTransform(ot); + } + + @Override + public Rectangle2D getBoundsInLocal() { + return null; + } + + public boolean isEnabled() { + return enabled; + } + + public void setEnabled(boolean enabled) { + this.enabled = enabled; + } + + public void setMouseUtil(MouseUtil util) { + this.util = util; + } + + private static final transient int MAX_DIGITS = 7; + private static final transient double EPSILON = 0.01; + private static final transient double TRIM_THRESHOLD_MAX_VALUE = Math.pow(10, 4); + private static final transient String[] SI_UNIT_LARGE_PREFIXES = { + "k", "M", "G", "T", "P", "E", "Z", "Y" + }; + + private static String formatValue(double value, int maxDigits) { + int magnitude = (int) Math.round(Math.log10(value)); + //System.out.println("magnitude: " + magnitude + ", " + value); + int allowedDecimals = maxDigits; + allowedDecimals -= Math.abs(magnitude); + if (allowedDecimals < 0) + allowedDecimals = 0; + + String valueStr = String.format(Locale.US, "%." + allowedDecimals + "f", value); + if (allowedDecimals > 0) { + for (int trunc = valueStr.length() - 1; trunc > 0; --trunc) { + char ch = valueStr.charAt(trunc); + if (ch == '.') { + valueStr = valueStr.substring(0, trunc); + break; + } + if (valueStr.charAt(trunc) != '0') { + valueStr = valueStr.substring(0, trunc + 1); + break; + } + } + if (Math.abs(value) + EPSILON > TRIM_THRESHOLD_MAX_VALUE) { + // Cut anything beyond a possible decimal dot out since they + // should not show anyway. This is a complete hack that tries to + // circumvent floating-point inaccuracy problems. + int dotIndex = valueStr.lastIndexOf('.'); + if (dotIndex > -1) { + valueStr = valueStr.substring(0, dotIndex); + } + } + } + + double trimValue = value; + if (Math.abs(value)+EPSILON >= TRIM_THRESHOLD_MAX_VALUE) { + for (int i = 0; Math.abs(trimValue)+EPSILON >= TRIM_THRESHOLD_MAX_VALUE; ++i) { + double trim = trimValue / 1000; + if (Math.abs(trim)-EPSILON < TRIM_THRESHOLD_MAX_VALUE) { + valueStr = valueStr.substring(0, valueStr.length() - (i + 1) * 3); + valueStr += SI_UNIT_LARGE_PREFIXES[i]; + break; + } + trimValue = trim; + } + } + + if (valueStr.equals("-0")) + valueStr = "0"; + + return valueStr; + } + + // TODO: these only work with Spherical Mercator + private static double xToLongitude(double x) { + return x; + } + + private static double yToLatitude(double y) { + double rad = Math.toRadians(y); + double sinh = Math.sinh(rad); + double atan = Math.atan(sinh); + double finald = Math.toDegrees(atan); + return finald; + } +}