import jalview.api.AlignViewportI;
import jalview.datamodel.SequenceFeature;
import jalview.datamodel.SequenceI;
+import jalview.util.Comparison;
import jalview.viewmodel.seqfeatures.FeatureRendererModel;
import java.awt.AlphaComposite;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
-import java.awt.image.BufferedImage;
public class FeatureRenderer extends FeatureRendererModel
{
-
- FontMetrics fm;
-
- int charOffset;
-
- boolean offscreenRender = false;
-
- protected SequenceI lastSeq;
-
- char s;
-
- int i;
-
- int av_charHeight, av_charWidth;
-
- boolean av_validCharWidth, av_isShowSeqFeatureHeight;
-
- private Integer currentColour;
+ private static final AlphaComposite NO_TRANSPARENCY = AlphaComposite
+ .getInstance(AlphaComposite.SRC_OVER, 1.0f);
/**
* Constructor given a viewport
this.av = viewport;
}
- protected void updateAvConfig()
+ /**
+ * Renders the sequence using the given feature colour between the given start
+ * and end columns. Returns true if at least one column is drawn, else false
+ * (the feature range does not overlap the start and end positions).
+ *
+ * @param g
+ * @param seq
+ * @param featureStart
+ * @param featureEnd
+ * @param featureColour
+ * @param start
+ * @param end
+ * @param y1
+ * @param colourOnly
+ * @return
+ */
+ boolean renderFeature(Graphics g, SequenceI seq, int featureStart,
+ int featureEnd, Color featureColour, int start, int end, int y1,
+ boolean colourOnly)
{
- av_charHeight = av.getCharHeight();
- av_charWidth = av.getCharWidth();
- av_validCharWidth = av.isValidCharWidth();
- av_isShowSeqFeatureHeight = av.isShowSequenceFeaturesHeight();
- }
+ int charHeight = av.getCharHeight();
+ int charWidth = av.getCharWidth();
+ boolean validCharWidth = av.isValidCharWidth();
- void renderFeature(Graphics g, SequenceI seq, int fstart, int fend,
- Color featureColour, int start, int end, int y1)
- {
- updateAvConfig();
- if (((fstart <= end) && (fend >= start)))
+ if (featureStart > end || featureEnd < start)
{
- if (fstart < start)
- { // fix for if the feature we have starts before the sequence start,
- fstart = start; // but the feature end is still valid!!
- }
-
- if (fend >= end)
- {
- fend = end;
- }
- int pady = (y1 + av_charHeight) - av_charHeight / 5;
- for (i = fstart; i <= fend; i++)
- {
- s = seq.getCharAt(i);
-
- if (jalview.util.Comparison.isGap(s))
- {
- continue;
- }
-
- g.setColor(featureColour);
-
- g.fillRect((i - start) * av_charWidth, y1, av_charWidth,
- av_charHeight);
-
- if (offscreenRender || !av_validCharWidth)
- {
- continue;
- }
-
- g.setColor(Color.white);
- charOffset = (av_charWidth - fm.charWidth(s)) / 2;
- g.drawString(String.valueOf(s), charOffset
- + (av_charWidth * (i - start)), pady);
+ return false;
+ }
- }
+ if (featureStart < start)
+ {
+ featureStart = start;
}
- }
+ if (featureEnd >= end)
+ {
+ featureEnd = end;
+ }
+ int pady = (y1 + charHeight) - charHeight / 5;
- void renderScoreFeature(Graphics g, SequenceI seq, int fstart, int fend,
- Color featureColour, int start, int end, int y1, byte[] bs)
- {
- updateAvConfig();
- if (((fstart <= end) && (fend >= start)))
+ FontMetrics fm = g.getFontMetrics();
+ for (int i = featureStart; i <= featureEnd; i++)
{
- if (fstart < start)
- { // fix for if the feature we have starts before the sequence start,
- fstart = start; // but the feature end is still valid!!
- }
+ char s = seq.getCharAt(i);
- if (fend >= end)
- {
- fend = end;
- }
- int pady = (y1 + av_charHeight) - av_charHeight / 5;
- int ystrt = 0, yend = av_charHeight;
- if (bs[0] != 0)
- {
- // signed - zero is always middle of residue line.
- if (bs[1] < 128)
- {
- yend = av_charHeight * (128 - bs[1]) / 512;
- ystrt = av_charHeight - yend / 2;
- }
- else
- {
- ystrt = av_charHeight / 2;
- yend = av_charHeight * (bs[1] - 128) / 512;
- }
- }
- else
+ if (Comparison.isGap(s))
{
- yend = av_charHeight * bs[1] / 255;
- ystrt = av_charHeight - yend;
-
+ continue;
}
- for (i = fstart; i <= fend; i++)
- {
- s = seq.getCharAt(i);
-
- if (jalview.util.Comparison.isGap(s))
- {
- continue;
- }
- g.setColor(featureColour);
- int x = (i - start) * av_charWidth;
- g.drawRect(x, y1, av_charWidth, av_charHeight);
- g.fillRect(x, y1 + ystrt, av_charWidth, yend);
+ g.setColor(featureColour);
- if (offscreenRender || !av_validCharWidth)
- {
- continue;
- }
+ g.fillRect((i - start) * charWidth, y1, charWidth,
+ charHeight);
- g.setColor(Color.black);
- charOffset = (av_charWidth - fm.charWidth(s)) / 2;
- g.drawString(String.valueOf(s), charOffset
- + (av_charWidth * (i - start)), pady);
+ if (colourOnly || !validCharWidth)
+ {
+ continue;
}
- }
- }
-
- BufferedImage offscreenImage;
- @Override
- public Color findFeatureColour(Color initialCol, SequenceI seq, int res)
- {
- return new Color(findFeatureColour(initialCol.getRGB(), seq, res));
+ g.setColor(Color.white);
+ int charOffset = (charWidth - fm.charWidth(s)) / 2;
+ g.drawString(String.valueOf(s), charOffset
+ + (charWidth * (i - start)), pady);
+ }
+ return true;
}
/**
- * This is used by Structure Viewers and the Overview Window to get the
- * feature colour of the rendered sequence, returned as an RGB value
+ * Renders the sequence using the given SCORE feature colour between the given
+ * start and end columns. Returns true if at least one column is drawn, else
+ * false (the feature range does not overlap the start and end positions).
*
- * @param defaultColour
+ * @param g
* @param seq
- * @param column
+ * @param fstart
+ * @param fend
+ * @param featureColour
+ * @param start
+ * @param end
+ * @param y1
+ * @param bs
+ * @param colourOnly
* @return
*/
- public synchronized int findFeatureColour(int defaultColour,
- final SequenceI seq, int column)
+ boolean renderScoreFeature(Graphics g, SequenceI seq, int fstart,
+ int fend, Color featureColour, int start, int end, int y1,
+ byte[] bs, boolean colourOnly)
{
- if (!av.isShowSequenceFeatures())
+ if (fstart > end || fend < start)
{
- return defaultColour;
+ return false;
}
- SequenceFeature[] sequenceFeatures = seq.getSequenceFeatures();
- if (seq != lastSeq)
+ if (fstart < start)
+ { // fix for if the feature we have starts before the sequence start,
+ fstart = start; // but the feature end is still valid!!
+ }
+
+ if (fend >= end)
+ {
+ fend = end;
+ }
+ int charHeight = av.getCharHeight();
+ int pady = (y1 + charHeight) - charHeight / 5;
+ int ystrt = 0, yend = charHeight;
+ if (bs[0] != 0)
{
- lastSeq = seq;
- lastSequenceFeatures = sequenceFeatures;
- if (lastSequenceFeatures != null)
+ // signed - zero is always middle of residue line.
+ if (bs[1] < 128)
{
- sfSize = lastSequenceFeatures.length;
+ yend = charHeight * (128 - bs[1]) / 512;
+ ystrt = charHeight - yend / 2;
+ }
+ else
+ {
+ ystrt = charHeight / 2;
+ yend = charHeight * (bs[1] - 128) / 512;
}
}
else
{
- if (lastSequenceFeatures != sequenceFeatures)
+ yend = charHeight * bs[1] / 255;
+ ystrt = charHeight - yend;
+
+ }
+
+ FontMetrics fm = g.getFontMetrics();
+ int charWidth = av.getCharWidth();
+
+ for (int i = fstart; i <= fend; i++)
+ {
+ char s = seq.getCharAt(i);
+
+ if (Comparison.isGap(s))
{
- lastSequenceFeatures = sequenceFeatures;
- if (lastSequenceFeatures != null)
- {
- sfSize = lastSequenceFeatures.length;
- }
+ continue;
}
+
+ g.setColor(featureColour);
+ int x = (i - start) * charWidth;
+ g.drawRect(x, y1, charWidth, charHeight);
+ g.fillRect(x, y1 + ystrt, charWidth, yend);
+
+ if (colourOnly || !av.isValidCharWidth())
+ {
+ continue;
+ }
+
+ g.setColor(Color.black);
+ int charOffset = (charWidth - fm.charWidth(s)) / 2;
+ g.drawString(String.valueOf(s), charOffset
+ + (charWidth * (i - start)), pady);
}
+ return true;
+ }
- if (lastSequenceFeatures == null || sfSize == 0)
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public Color findFeatureColour(SequenceI seq, int column, Graphics g)
+ {
+ if (!av.isShowSequenceFeatures())
{
- return defaultColour;
+ return null;
}
- if (jalview.util.Comparison.isGap(lastSeq.getCharAt(column)))
+ SequenceFeature[] sequenceFeatures = seq.getSequenceFeatures();
+
+ if (sequenceFeatures == null || sequenceFeatures.length == 0)
{
- return Color.white.getRGB();
+ return null;
}
- // Only bother making an offscreen image if transparency is applied
- if (transparency != 1.0f && offscreenImage == null)
+ if (Comparison.isGap(seq.getCharAt(column)))
{
- offscreenImage = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
+ return Color.white;
}
- currentColour = null;
- // TODO: non-threadsafe - each rendering thread needs its own instance of
- // the feature renderer - or this should be synchronized.
- offscreenRender = true;
-
- if (offscreenImage != null)
+ Color renderedColour = null;
+ if (transparency == 1.0f)
{
- offscreenImage.setRGB(0, 0, defaultColour);
- drawSequence(offscreenImage.getGraphics(), lastSeq, column, column, 0);
-
- return offscreenImage.getRGB(0, 0);
+ /*
+ * simple case - just find the topmost rendered visible feature colour
+ */
+ renderedColour = findFeatureColour(seq, seq.findPosition(column));
}
else
{
- drawSequence(null, lastSeq, lastSeq.findPosition(column), -1, -1);
-
- if (currentColour == null)
- {
- return defaultColour;
- }
- else
- {
- return currentColour.intValue();
- }
+ /*
+ * transparency case - draw all visible features in render order to
+ * build up a composite colour on the graphics context
+ */
+ renderedColour = drawSequence(g, seq, column, column, 0, true);
}
-
+ return renderedColour;
}
- private volatile SequenceFeature[] lastSequenceFeatures;
-
- int sfSize;
-
- int sfindex;
-
- int spos;
-
- int epos;
-
/**
- * Draws the sequence on the graphics context, or just determines the colour
- * that would be drawn (if flag offscreenrender is true).
+ * Draws the sequence features on the graphics context, or just determines the
+ * colour that would be drawn (if flag colourOnly is true). Returns the last
+ * colour drawn (which may not be the effective colour if transparency
+ * applies), or null if no feature is drawn in the range given.
*
* @param g
+ * the graphics context to draw on (may be null if colourOnly==true)
* @param seq
* @param start
- * start column (or sequence position in offscreenrender mode)
+ * start column
* @param end
- * end column (not used in offscreenrender mode)
+ * end column
* @param y1
* vertical offset at which to draw on the graphics
+ * @param colourOnly
+ * if true, only do enough to determine the colour for the position,
+ * do not draw the character
+ * @return
*/
- public synchronized void drawSequence(Graphics g, final SequenceI seq,
- int start, int end, int y1)
+ public synchronized Color drawSequence(final Graphics g,
+ final SequenceI seq, int start, int end, int y1,
+ boolean colourOnly)
{
SequenceFeature[] sequenceFeatures = seq.getSequenceFeatures();
if (sequenceFeatures == null || sequenceFeatures.length == 0)
{
- return;
- }
-
- if (g != null)
- {
- fm = g.getFontMetrics();
+ return null;
}
updateFeatures();
- if (lastSeq == null || seq != lastSeq
- || sequenceFeatures != lastSequenceFeatures)
- {
- lastSeq = seq;
- lastSequenceFeatures = sequenceFeatures;
- }
-
- if (transparency != 1 && g != null)
+ if (transparency != 1f && g != null)
{
Graphics2D g2 = (Graphics2D) g;
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
transparency));
}
- if (!offscreenRender)
- {
- spos = lastSeq.findPosition(start);
- epos = lastSeq.findPosition(end);
- }
+ int startPos = seq.findPosition(start);
+ int endPos = seq.findPosition(end);
+
+ int sfSize = sequenceFeatures.length;
+ Color drawnColour = null;
- sfSize = lastSequenceFeatures.length;
+ /*
+ * iterate over features in ordering of their rendering (last is on top)
+ */
for (int renderIndex = 0; renderIndex < renderOrder.length; renderIndex++)
{
String type = renderOrder[renderIndex];
// loop through all features in sequence to find
// current feature to render
- for (sfindex = 0; sfindex < sfSize; sfindex++)
+ for (int sfindex = 0; sfindex < sfSize; sfindex++)
{
- final SequenceFeature sequenceFeature = lastSequenceFeatures[sfindex];
+ final SequenceFeature sequenceFeature = sequenceFeatures[sfindex];
if (!sequenceFeature.type.equals(type))
{
continue;
}
+ /*
+ * a feature type may be flagged as shown but the group
+ * an instance of it belongs to may be hidden
+ */
if (featureGroupNotShown(sequenceFeature))
{
continue;
}
/*
- * check feature overlaps the visible part of the alignment,
- * unless doing offscreenRender (to the Overview window or a
- * structure viewer) which is not limited
+ * check feature overlaps the target range
+ * TODO: efficient retrieval of features overlapping a range
*/
- if (!offscreenRender
- && (sequenceFeature.getBegin() > epos || sequenceFeature
- .getEnd() < spos))
+ if (sequenceFeature.getBegin() > endPos
+ || sequenceFeature.getEnd() < startPos)
{
continue;
}
Color featureColour = getColour(sequenceFeature);
boolean isContactFeature = sequenceFeature.isContactFeature();
- if (offscreenRender && offscreenImage == null)
- {
- /*
- * offscreen mode with no image (image is only needed if transparency
- * is applied to feature colours) - just check feature is rendered at
- * the requested position (start == sequence position in this mode)
- */
- boolean featureIsAtPosition = sequenceFeature.begin <= start
- && sequenceFeature.end >= start;
- if (isContactFeature)
- {
- featureIsAtPosition = sequenceFeature.begin == start
- || sequenceFeature.end == start;
- }
- if (featureIsAtPosition)
- {
- // this is passed out to the overview and other sequence renderers
- // (e.g. molecule viewer) to get displayed colour for rendered
- // sequence
- currentColour = new Integer(featureColour.getRGB());
- // used to be retreived from av.featuresDisplayed
- // currentColour = av.featuresDisplayed
- // .get(sequenceFeatures[sfindex].type);
-
- }
- }
- else if (isContactFeature)
+ if (isContactFeature)
{
- renderFeature(g, seq, seq.findIndex(sequenceFeature.begin) - 1,
+ boolean drawn = renderFeature(g, seq,
+ seq.findIndex(sequenceFeature.begin) - 1,
seq.findIndex(sequenceFeature.begin) - 1, featureColour,
- start, end, y1);
- renderFeature(g, seq, seq.findIndex(sequenceFeature.end) - 1,
+ start, end, y1, colourOnly);
+ drawn |= renderFeature(g, seq,
+ seq.findIndex(sequenceFeature.end) - 1,
seq.findIndex(sequenceFeature.end) - 1, featureColour,
- start, end, y1);
-
+ start, end, y1, colourOnly);
+ if (drawn)
+ {
+ drawnColour = featureColour;
+ }
}
else if (showFeature(sequenceFeature))
{
- if (av_isShowSeqFeatureHeight
+ if (av.isShowSequenceFeaturesHeight()
&& !Float.isNaN(sequenceFeature.score))
{
- renderScoreFeature(g, seq,
+ boolean drawn = renderScoreFeature(g, seq,
seq.findIndex(sequenceFeature.begin) - 1,
- seq.findIndex(sequenceFeature.end) - 1,
- featureColour, start, end, y1,
- normaliseScore(sequenceFeature));
+ seq.findIndex(sequenceFeature.end) - 1, featureColour,
+ start, end, y1, normaliseScore(sequenceFeature),
+ colourOnly);
+ if (drawn)
+ {
+ drawnColour = featureColour;
+ }
}
else
{
- renderFeature(g, seq, seq.findIndex(sequenceFeature.begin) - 1,
- seq.findIndex(sequenceFeature.end) - 1,
- featureColour, start, end, y1);
+ boolean drawn = renderFeature(g, seq,
+ seq.findIndex(sequenceFeature.begin) - 1,
+ seq.findIndex(sequenceFeature.end) - 1, featureColour,
+ start, end, y1, colourOnly);
+ if (drawn)
+ {
+ drawnColour = featureColour;
+ }
}
}
}
if (transparency != 1.0f && g != null)
{
+ /*
+ * reset transparency
+ */
Graphics2D g2 = (Graphics2D) g;
- g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
- 1.0f));
+ g2.setComposite(NO_TRANSPARENCY);
}
+
+ return drawnColour;
}
/**
@Override
public void featuresAdded()
{
- lastSeq = null;
findAllFeatures();
}
+
+ /**
+ * Returns the sequence feature colour rendered at the given sequence
+ * position, or null if none found. The feature of highest render order (i.e.
+ * on top) is found, subject to both feature type and feature group being
+ * visible, and its colour returned.
+ *
+ * @param seq
+ * @param pos
+ * @return
+ */
+ Color findFeatureColour(SequenceI seq, int pos)
+ {
+ SequenceFeature[] sequenceFeatures = seq.getSequenceFeatures();
+ if (sequenceFeatures == null || sequenceFeatures.length == 0)
+ {
+ return null;
+ }
+
+ /*
+ * check for new feature added while processing
+ */
+ updateFeatures();
+
+ /*
+ * inspect features in reverse renderOrder (the last in the array is
+ * displayed on top) until we find one that is rendered at the position
+ */
+ for (int renderIndex = renderOrder.length - 1; renderIndex >= 0; renderIndex--)
+ {
+ String type = renderOrder[renderIndex];
+ if (!showFeatureOfType(type))
+ {
+ continue;
+ }
+
+ for (int sfindex = 0; sfindex < sequenceFeatures.length; sfindex++)
+ {
+ SequenceFeature sequenceFeature = sequenceFeatures[sfindex];
+ if (!sequenceFeature.type.equals(type))
+ {
+ continue;
+ }
+
+ if (featureGroupNotShown(sequenceFeature))
+ {
+ continue;
+ }
+
+ /*
+ * check the column position is within the feature range
+ * (or is one of the two contact positions for a contact feature)
+ */
+ boolean featureIsAtPosition = sequenceFeature.begin <= pos
+ && sequenceFeature.end >= pos;
+ if (sequenceFeature.isContactFeature())
+ {
+ featureIsAtPosition = sequenceFeature.begin == pos
+ || sequenceFeature.end == pos;
+ }
+ if (featureIsAtPosition)
+ {
+ return getColour(sequenceFeature);
+ }
+ }
+ }
+
+ /*
+ * no displayed feature found at position
+ */
+ return null;
+ }
}
git://source.jalview.org / jalview.git / blobdiff