ranges.getStartRes(), ranges.getEndRes(),
ranges.getStartSeq(), ranges.getEndSeq());
+ BufferedImage cursorImage = drawCursor(ranges.getStartRes(),
+ ranges.getEndRes(), ranges.getStartSeq(), ranges.getEndSeq());
+
if ((img != null) && (fastPaint
|| (getVisibleRect().width != g.getClipBounds().width)
|| (getVisibleRect().height != g.getClipBounds().height)))
{
- BufferedImage lcimg = buildLocalImage(selectImage);
+ BufferedImage lcimg = buildLocalImage(selectImage, cursorImage);
g.drawImage(lcimg, 0, 0, this);
fastPaint = false;
}
}
// lcimg is a local *copy* of img which we'll draw selectImage on top of
- BufferedImage lcimg = buildLocalImage(selectImage);
+ BufferedImage lcimg = buildLocalImage(selectImage, cursorImage);
g.drawImage(lcimg, 0, 0, this);
}
}
* Make a local image by combining the cached image img
* with any selection
*/
- private BufferedImage buildLocalImage(BufferedImage selectImage)
+ private BufferedImage buildLocalImage(BufferedImage selectImage,
+ BufferedImage cursorImage)
{
// clone the cached image
BufferedImage lcimg = new BufferedImage(img.getWidth(), img.getHeight(),
AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
g2d.drawImage(selectImage, 0, 0, this);
}
+ // overlay cursor on lcimg
+ if (cursorImage != null)
+ {
+ g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
+ g2d.drawImage(cursorImage, 0, 0, this);
+ }
g2d.dispose();
return lcimg;
}
}
- if (av.cursorMode && cursorY == i && cursorX >= startRes
+ /* if (av.cursorMode && cursorY == i && cursorX >= startRes
&& cursorX <= endRes)
{
seqRdr.drawCursor(nextSeq, cursorX, (cursorX - startRes) * charWidth,
offset + ((i - startSeq) * charHeight));
- }
+ }*/
}
if (av.getSelectionGroup() != null
return selectionImage;
}
+ /**
+ * Draw the cursor as a separate image and overlay
+ *
+ * @param startRes
+ * start residue of area to draw cursor in
+ * @param endRes
+ * end residue of area to draw cursor in
+ * @param startSeq
+ * start sequence of area to draw cursor in
+ * @param endSeq
+ * end sequence of are to draw cursor in
+ * @return a transparent image of the same size as the sequence canvas, with
+ * the cursor drawn on it, if any
+ */
+ private BufferedImage drawCursor(int startRes, int endRes, int startSeq,
+ int endSeq)
+ {
+ // define our cursor image
+ BufferedImage cursorImage = null;
+
+ // convert the cursorY into a position on the visible alignment
+ int cursor_ypos = av.getAlignment().getHiddenColumns()
+ .findColumnPosition(cursorY);
+
+ // don't do work unless we have to
+ if (av.cursorMode && cursor_ypos >= startSeq && cursor_ypos <= endSeq)
+ {
+ int yoffset = 0;
+ int xoffset = 0;
+ int startx = startRes;
+ int endx = endRes;
+
+ // convert the cursorX into a position on the visible alignment
+ int cursor_xpos = av.getAlignment().getHiddenColumns()
+ .findColumnPosition(cursorX);
+
+ if (av.getWrapAlignment())
+ {
+ // work out the correct offsets for the cursor
+ int charHeight = av.getCharHeight();
+ int charWidth = av.getCharWidth();
+ int canvasWidth = getWidth();
+ int canvasHeight = getHeight();
+
+ // height gap above each panel
+ int hgap = charHeight;
+ if (av.getScaleAboveWrapped())
+ {
+ hgap += charHeight;
+ }
+
+ int cWidth = (canvasWidth - labelWidthEast - labelWidthWest)
+ / charWidth;
+ int cHeight = av.getAlignment().getHeight() * charHeight;
+
+ endx = startx + cWidth - 1;
+ int ypos = hgap; // vertical offset
+
+ // iterate down the wrapped panels
+ while ((ypos <= canvasHeight) && (endx < cursor_xpos))
+ {
+ // update vertical offset
+ ypos += cHeight + getAnnotationHeight() + hgap;
+
+ // update horizontal offset
+ startx += cWidth;
+ endx = startx + cWidth - 1;
+ }
+ yoffset = ypos;
+ xoffset = labelWidthWest;
+ }
+
+ // now check if cursor is within range for x values
+ if (cursor_xpos >= startx && cursor_xpos <= endx)
+ {
+ // get a new image of the correct size
+ cursorImage = setupImage();
+ Graphics2D g = (Graphics2D) cursorImage.getGraphics();
+
+ // get the character the cursor is drawn at
+ SequenceI seq = av.getAlignment().getSequenceAt(cursorY);
+ char s = seq.getCharAt(cursorX);
+
+ seqRdr.drawCursor(g, s,
+ xoffset + (cursor_xpos - startx) * av.getCharWidth(),
+ yoffset + (cursor_ypos - startSeq) * av.getCharHeight());
+ g.dispose();
+ }
+ }
+
+ return cursorImage;
+ }
+
+
/*
* Set up graphics for selection group
*/
{
fastPaint = true;
repaint();
+ return;
}
- else if (eventName.equals(ViewportRanges.STARTRES))
+
+ int scrollX = 0;
+ if (eventName.equals(ViewportRanges.STARTRES))
{
- int scrollX = 0;
- if (eventName.equals(ViewportRanges.STARTRES))
+ // Make sure we're not trying to draw a panel
+ // larger than the visible window
+ ViewportRanges vpRanges = av.getRanges();
+ scrollX = (int) evt.getNewValue() - (int) evt.getOldValue();
+ int range = vpRanges.getViewportWidth();
+ if (scrollX > range)
{
- // Make sure we're not trying to draw a panel
- // larger than the visible window
- ViewportRanges vpRanges = av.getRanges();
- scrollX = (int) evt.getNewValue() - (int) evt.getOldValue();
- int range = vpRanges.getViewportWidth();
- if (scrollX > range)
- {
- scrollX = range;
- }
- else if (scrollX < -range)
- {
- scrollX = -range;
- }
+ scrollX = range;
+ }
+ else if (scrollX < -range)
+ {
+ scrollX = -range;
+ }
+ }
- // Both scrolling and resizing change viewport ranges: scrolling changes
- // both start and end points, but resize only changes end values.
- // Here we only want to fastpaint on a scroll, with resize using a normal
- // paint, so scroll events are identified as changes to the horizontal or
- // vertical start value.
-
- // scroll - startres and endres both change
- if (av.getWrapAlignment())
- {
- fastPaintWrapped(scrollX);
- }
- else
- {
- fastPaint(scrollX, 0);
- }
+ // Both scrolling and resizing change viewport ranges: scrolling changes
+ // both start and end points, but resize only changes end values.
+ // Here we only want to fastpaint on a scroll, with resize using a normal
+ // paint, so scroll events are identified as changes to the horizontal or
+ // vertical start value.
+
+ // scroll - startres and endres both change
+ if (eventName.equals(ViewportRanges.STARTRES))
+ {
+ if (av.getWrapAlignment())
+ {
+ fastPaintWrapped(scrollX);
}
- else if (eventName.equals(ViewportRanges.STARTSEQ))
+ else
{
- // scroll
- fastPaint(0, (int) evt.getNewValue() - (int) evt.getOldValue());
+ fastPaint(scrollX, 0);
}
}
+ else if (eventName.equals(ViewportRanges.STARTSEQ))
+ {
+ // scroll
+ fastPaint(0, (int) evt.getNewValue() - (int) evt.getOldValue());
+ }
}
/**
git://source.jalview.org / jalview.git / blobdiff