/*
* Converts histogram onscreen horizontal pixel amounts to image values.
*/
private double pixelToValue(final int pixel) {
synchronized (_synchObject) {
final double[] minMaxView = _histogramDataGroup.getMinMaxView();
final double min = minMaxView[0];
return min + pixelToValueRelative(pixel);
}
}
/*
* Converts image value to histogram onscreen horizontal pixel.
*/
private int valueToPixel(final double value) {
synchronized (_synchObject) {
final double[] minMaxView = _histogramDataGroup.getMinMaxView();
final double min = minMaxView[0];
final double max = minMaxView[1];
final int pixel = (int) (PaletteFix.getSize() * (value - min) / (max - min));
return pixel;
}
}
private double pixelToValueRelative(final int pixel) {
synchronized (_synchObject) {
final double[] minMaxView = _histogramDataGroup.getMinMaxView();
final double min = minMaxView[0];
final double max = minMaxView[1];
final double valuePerPixel = (max - min) / PaletteFix.getSize();
return pixel * valuePerPixel;
}
}
/**
* This method should be called whenever a new set of histogram values is to be displayed (i.e.
* when a different image gets focus).
*
* @param histogramData
*/
public void setHistogramData(final HistogramDataGroup histogramData) {
double[] minMaxView;
double[] minMaxLUT;
synchronized (_synchObject) {
_histogramDataGroup = histogramData;
_histogramDataGroup.setListener(new HistogramDataListener());
minMaxView = _histogramDataGroup.getMinMaxView();
minMaxLUT = _histogramDataGroup.getMinMaxLUT();
}
// IJ.log("----");
// IJ.log("setHistogramData");
// IJ.log("view " + minMaxView[0] + " " + minMaxView[1] + " lut " + minMaxLUT[0] + " " +
// minMaxLUT[1]);
// IJ.log("----");
if (null != _frame) {
if (_frame.isVisible()) {
_frame.setVisible(true);
}
_frame.setTitle(histogramData.getTitle());
_histogramPanel.setStatistics(histogramData.getStatistics(WIDTH));
final boolean autoRange = histogramData.getAutoRange();
if (autoRange) {
// turn cursors off
_histogramPanel.setCursors(null, null);
} else {
// set cursors to edges
_histogramPanel.setCursors(INSET, INSET + WIDTH - 1);
}
_uiPanel.setAutoRange(autoRange);
_uiPanel.setExcludePixels(histogramData.getExcludePixels());
_uiPanel.setCombineChannels(histogramData.getCombineChannels());
_uiPanel.setDisplayChannels(histogramData.getDisplayChannels());
_uiPanel.enableChannels(histogramData.hasChannels());
_uiPanel.setMinMaxLUT(minMaxLUT[0], minMaxLUT[1]);
_colorBarPanel.setMinMax(minMaxView[0], minMaxView[1], minMaxLUT[0], minMaxLUT[1]);
}
}
/*
* Updates histogram and color bar during the fit.
*/
private void changed(
final double minView, final double maxView, final double minLUT, final double maxLUT) {
synchronized (_synchObject) {
// TODO ARG added this 9/27 to change hDG internal minMaxViews
_histogramDataGroup.setMinMaxView(minView, maxView);
_histogramPanel.setStatistics(_histogramDataGroup.getStatistics(WIDTH));
_colorBarPanel.setMinMax(minView, maxView, minLUT, maxLUT);
// TODO changed is currently called from two places:
// i) the HistogramData listener will call it periodically during the
// fit.
// ii) if the user types in a new LUT range this gets called.
// iii) in the future more UI interactions will wind up here
//
// TODO if the user drags a new LUT range this doesn't get called!
// IJ.log("changed min/maxView " + minView + " " + maxView +
// " min/maxLUT " + minLUT + " " + maxLUT);
_histogramDataGroup.redisplay();
}
}
// TODO TIDY THIS UP do we need "reset cursor positions"
private void zoomToLUT() {
final double minMaxLUT[] = _histogramDataGroup.getMinMaxLUT();
final double minLUT = minMaxLUT[0];
final double maxLUT = minMaxLUT[1];
// zoom to fit current min/max LUT settings
final double minView = minLUT;
final double maxView = maxLUT;
changed(minView, maxView, minLUT, maxLUT);
// reset cursor positions
_histogramPanel.resetCursors();
}