import java.awt.Graphics;
import javax.swing.JPanel;
-import tim.prune.Config;
import tim.prune.I18nManager;
+import tim.prune.config.ColourScheme;
+import tim.prune.config.Config;
+import tim.prune.data.Unit;
/**
- * Class to show a scale bar on the main map of Prune
+ * Class to show a scale bar on the main map of GpsPrune
*/
public class ScaleBar extends JPanel
{
/** zoom level */
private int _zoomLevel = -1;
- /** y tile number */
- private int _yTile = -1;
+ /** y position */
+ private double _yPos = 0.0;
// Dimensions
/** Offset from left side in pixels */
/** Margin between bar and end text in pixels */
private static final int MARGIN_WIDTH = 8;
- /** metric scales for each zoom level */
- private static final int[] _metricScales = {10000, 5000, 2000, 2000, 1000, 500, 200, 100,
- 50, 20, 10, 5, 2, 2, 1, -2, -5, -10, -20, -50, -100, -200};
+ /** scales for each zoom level */
+ private static final int[] _scales = {10000, 5000, 2000, 2000, 1000, 500, 200, 100,
+ 50, 20, 10, 5, 2, 2, 1,
+ -2, -5, -10, -20, -50, -100, -200};
/** pixel counts for each zoom level (metric) */
- private static final int[] _metricPixels = {64, 64, 51, 102, 102, 102, 81, 81,
- 81, 65, 65, 65, 52, 105, 105, 105, 83, 83, 83, 67, 67, 67};
- /** imperial scales for each zoom level (num miles) */
- private static final int[] _mileScales = {10000, 10000, 5000, 2000, 2000, 1000, 500, 200,
- 100, 50, 20, 10, 5, 2, 1, -2, -2, -5, -10, -20, -50, -100};
- /** pixel counts for each zoom level (miles) */
- private static final int[] _milePixels = {79, 79, 79, 64, 127, 127, 127, 102,
- 102, 102, 81, 81, 81, 65, 65, 65, 130, 104, 104, 104, 104, 83, 83};
+ private static final double[] _metricPixels = {64, 64, 51, 102, 102, 102, 81, 81,
+ 81, 65, 65, 65, 52, 105, 105,
+ 105, 83, 83, 83, 67, 67, 67};
/**
if (_zoomLevel > -1)
{
try {
- boolean useMetric = Config.getConfigBoolean(Config.KEY_METRIC_UNITS);
- int rightSide = LEFT_OFFSET + (useMetric?_metricPixels[_zoomLevel]:_milePixels[_zoomLevel]);
- int scale = (useMetric?_metricScales[_zoomLevel]:_mileScales[_zoomLevel]);
+ final double distScaleFactor = Config.getUnitSet().getDistanceUnit().getMultFactorFromStd();
+ double drightSide = LEFT_OFFSET + _metricPixels[_zoomLevel] / 1000.0 / distScaleFactor;
+ int scale = _scales[_zoomLevel];
- // work out cos(latitude) from y tile and zoom, and apply to scale
- final double n = Math.pow(2, _zoomLevel);
- final double angle = Math.PI * (1 - 2.0*_yTile/n);
+ // work out cos(latitude) from y position, and apply to scale
+ final double angle = Math.PI * (1 - 2*_yPos);
final double lat = Math.atan(Math.sinh(angle));
final double cosLat = Math.cos(lat);
- rightSide = (int) (rightSide / cosLat);
+ int rightSide = (int) (drightSide / cosLat);
// Adjust if scale is too large
while (rightSide > 300)
{
// Abort if scale is now less than 1 unit (shouldn't ever be)
if (scale < 1) {return;}
}
+ // Abort if scale is negative (around poles)
+ if (rightSide < 1) {return;}
+ // Determine colours to use
+ Color barColour = Config.getColourScheme().getColour(ColourScheme.IDX_TEXT);
+ Color blankColour = new Color(255-barColour.getRed(), 255-barColour.getGreen(), 255-barColour.getBlue());
+ // Should this blank colour be set to saturation zero?
+ // Draw blank bars behind
+ inG.setColor(blankColour);
+ inG.drawLine(LEFT_OFFSET, Y_OFFSET-1, rightSide+2, Y_OFFSET-1);
+ inG.drawLine(LEFT_OFFSET, Y_OFFSET+2, rightSide+2, Y_OFFSET+2);
+ inG.drawLine(LEFT_OFFSET-1, Y_OFFSET+2, LEFT_OFFSET-1, Y_OFFSET-TICK_HEIGHT);
+ inG.drawLine(LEFT_OFFSET+2, Y_OFFSET+2, LEFT_OFFSET+2, Y_OFFSET-TICK_HEIGHT);
+ inG.drawLine(rightSide-1, Y_OFFSET+2, rightSide-1, Y_OFFSET-TICK_HEIGHT);
+ inG.drawLine(rightSide+2, Y_OFFSET+2, rightSide+2, Y_OFFSET-TICK_HEIGHT);
// horizontal
- inG.setColor(Color.BLACK);
+ inG.setColor(barColour);
inG.drawLine(LEFT_OFFSET, Y_OFFSET, rightSide, Y_OFFSET);
inG.drawLine(LEFT_OFFSET, Y_OFFSET+1, rightSide, Y_OFFSET+1);
// 0 tick
inG.drawLine(LEFT_OFFSET, Y_OFFSET, LEFT_OFFSET, Y_OFFSET-TICK_HEIGHT);
inG.drawLine(LEFT_OFFSET+1, Y_OFFSET, LEFT_OFFSET+1, Y_OFFSET-TICK_HEIGHT);
// end tick
- inG.drawLine(rightSide, Y_OFFSET, rightSide, Y_OFFSET-TICK_HEIGHT);
- inG.drawLine(rightSide+1, Y_OFFSET, rightSide+1, Y_OFFSET-TICK_HEIGHT);
+ inG.drawLine(rightSide, Y_OFFSET+1, rightSide, Y_OFFSET-TICK_HEIGHT);
+ inG.drawLine(rightSide+1, Y_OFFSET+1, rightSide+1, Y_OFFSET-TICK_HEIGHT);
// text
- String text = (scale>0?(""+scale):("1/"+(-scale))) + " " + I18nManager.getText(useMetric?"units.kilometres.short":"units.miles.short");
+ String text = getScaleText(scale, Config.getUnitSet().getDistanceUnit());
+ inG.setColor(blankColour);
+ inG.drawString(text, rightSide+MARGIN_WIDTH-1, Y_OFFSET);
+ inG.drawString(text, rightSide+MARGIN_WIDTH+1, Y_OFFSET);
+ inG.drawString(text, rightSide+MARGIN_WIDTH, Y_OFFSET-1);
+ inG.drawString(text, rightSide+MARGIN_WIDTH, Y_OFFSET+1);
+ inG.setColor(barColour);
inG.drawString(text, rightSide+MARGIN_WIDTH, Y_OFFSET);
}
catch (ArrayIndexOutOfBoundsException ai) {}
}
}
+ /**
+ * Get the scale text for the given scale
+ * @param inScale scale number
+ * @param inDistUnit distance unit
+ * @return scale text as string
+ */
+ private static String getScaleText(int inScale, Unit inDistUnit)
+ {
+ if (inScale > 0) {
+ // Positive scale means km or miles
+ return "" + inScale + " " +
+ I18nManager.getText(inDistUnit.getShortnameKey());
+ }
+ // negative scale means a fraction
+ return "" + (-1.0 / inScale) + " " + I18nManager.getText(inDistUnit.getShortnameKey());
+ // might be nice to say 100m instead of 0.1km, 275ft instead of 0.2miles, etc - need to be done by Unit itself?
+ }
+
/**
* Update the scale level
* @param inZoom new zoom level
+ * @param inYPos y position, where 0 is north pole, 1 is south pole
*/
- public void updateScale(int inZoom, int inYtile)
+ public void updateScale(int inZoom, double inYPos)
{
_zoomLevel = inZoom;
- _yTile = inYtile;
+ _yPos = inYPos;
}
}
projects / GpsPrune.git / blobdiff