import jalview.renderer.seqfeatures.FeatureRenderer;
import jalview.viewmodel.OverviewDimensions;
+import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics;
+import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
public class OverviewRenderer
{
+ // transparency of hidden cols/seqs overlay
+ private final float TRANSPARENCY = 0.5f;
+
private FeatureColourFinder finder;
private jalview.api.SequenceRenderer sr;
{
break;
}
-
+
// get details of this alignment row
- boolean hidden = rows.isHidden(alignmentRow);
SequenceI seq = rows.getSequence(alignmentRow);
-
+
// calculate where this row extends to in pixels
int endRow = Math.min(Math.round((seqIndex + 1) * pixelsPerSeq) - 1,
miniMe.getHeight() - 1);
-
+
int colIndex = 0;
int pixelCol = 0;
for (int alignmentCol : cols)
{
break;
}
-
+
// calculate where this column extends to in pixels
int endCol = Math.min(Math.round((colIndex + 1) * pixelsPerCol) - 1,
miniMe.getWidth() - 1);
-
+
// don't do expensive colour determination if we're not going to use it
// NB this is important to avoid performance issues in the overview
// panel
if (pixelCol <= endCol)
{
- // determine the colour based on the sequence and column position
rgbcolor = getColumnColourFromSequence(seq,
- hidden || cols.isHidden(alignmentCol), alignmentCol,
+ alignmentCol,
finder);
-
+
// fill in the appropriate number of pixels
for (int row = pixelRow; row <= endRow; ++row)
{
miniMe.setRGB(col, row, rgbcolor);
}
}
-
+
pixelCol = endCol + 1;
}
colIndex++;
pixelRow = endRow + 1;
seqIndex++;
}
+
+ overlayHiddenRegions(rows, cols);
return miniMe;
}
- /*
+ /**
* Find the colour of a sequence at a specified column position
+ *
+ * @param seq
+ * sequence to get colour for
+ * @param lastcol
+ * column position to get colour for
+ * @param fcfinder
+ * FeatureColourFinder to use
+ * @return colour of sequence at this position, as RGB
*/
private int getColumnColourFromSequence(jalview.datamodel.SequenceI seq,
- boolean isHidden, int lastcol, FeatureColourFinder fcfinder)
+ int lastcol, FeatureColourFinder fcfinder)
{
Color color = Color.white;
color = sr.getResidueColour(seq, lastcol, fcfinder);
}
- if (isHidden)
+ return color.getRGB();
+ }
+
+ /**
+ * Overlay the hidden regions on the overview image
+ *
+ * @param rows
+ * collection of rows the overview is built over
+ * @param cols
+ * collection of columns the overview is built over
+ */
+ private void overlayHiddenRegions(AlignmentRowsCollectionI rows,
+ AlignmentColsCollectionI cols)
+ {
+ if (cols.hasHidden() || rows.hasHidden())
{
- color = color.darker().darker();
+ BufferedImage mask = buildHiddenImage(rows, cols, miniMe.getWidth(),
+ miniMe.getHeight());
+
+ Graphics2D g = (Graphics2D) miniMe.getGraphics();
+ g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
+ TRANSPARENCY));
+ g.drawImage(mask, 0, 0, miniMe.getWidth(), miniMe.getHeight(), null);
}
+ }
- return color.getRGB();
+ /**
+ * Build a masking image of hidden columns and rows to be applied on top of
+ * the main overview image.
+ *
+ * @param rows
+ * collection of rows the overview is built over
+ * @param cols
+ * collection of columns the overview is built over
+ * @param width
+ * width of overview in pixels
+ * @param height
+ * height of overview in pixels
+ * @return BufferedImage containing mask of hidden regions
+ */
+ private BufferedImage buildHiddenImage(AlignmentRowsCollectionI rows,
+ AlignmentColsCollectionI cols, int width, int height)
+ {
+ // new masking image
+ BufferedImage hiddenImage = new BufferedImage(width, height,
+ BufferedImage.TYPE_INT_ARGB);
+
+ int colIndex = 0;
+ int pixelCol = 0;
+
+ Color hidden = Color.DARK_GRAY.darker();
+
+ Graphics2D g2d = (Graphics2D) hiddenImage.getGraphics();
+
+ // set background to transparent
+ g2d.setComposite(AlphaComposite.Clear);
+ g2d.fillRect(0, 0, width, height);
+
+ // set next colour to opaque
+ g2d.setComposite(AlphaComposite.Src);
+
+ for (int alignmentCol : cols)
+ {
+ if (redraw)
+ {
+ break;
+ }
+
+ // calculate where this column extends to in pixels
+ int endCol = Math.min(Math.round((colIndex + 1) * pixelsPerCol) - 1,
+ hiddenImage.getWidth() - 1);
+
+ if (pixelCol <= endCol)
+ {
+ // determine the colour based on the sequence and column position
+ if (cols.isHidden(alignmentCol))
+ {
+ g2d.setColor(hidden);
+ g2d.fillRect(pixelCol, 0, endCol - pixelCol + 1, height);
+ }
+
+ pixelCol = endCol + 1;
+ }
+ colIndex++;
+
+ }
+
+ int seqIndex = 0;
+ int pixelRow = 0;
+ for (int alignmentRow : rows)
+ {
+ if (redraw)
+ {
+ break;
+ }
+
+ // calculate where this row extends to in pixels
+ int endRow = Math.min(Math.round((seqIndex + 1) * pixelsPerSeq) - 1,
+ miniMe.getHeight() - 1);
+
+ // get details of this alignment row
+ if (rows.isHidden(alignmentRow))
+ {
+ g2d.setColor(hidden);
+ g2d.fillRect(0, pixelRow, width, endRow - pixelRow + 1);
+ }
+ pixelRow = endRow + 1;
+ seqIndex++;
+ }
+
+ return hiddenImage;
}
/**
}
}
+ /**
+ * Allows redraw flag to be set
+ *
+ * @param b
+ * value to set redraw to: true = redraw is occurring, false = no
+ * redraw
+ */
public void setRedraw(boolean b)
{
synchronized (this)
git://source.jalview.org / jalview.git / blobdiff