2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation, either version 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
21 package jalview.renderer;
23 import jalview.api.AlignmentColsCollectionI;
24 import jalview.api.AlignmentRowsCollectionI;
25 import jalview.datamodel.AlignmentAnnotation;
26 import jalview.datamodel.Annotation;
27 import jalview.datamodel.SequenceI;
28 import jalview.renderer.seqfeatures.FeatureColourFinder;
29 import jalview.renderer.seqfeatures.FeatureRenderer;
30 import jalview.viewmodel.OverviewDimensions;
32 import java.awt.Color;
33 import java.awt.Graphics;
34 import java.awt.image.BufferedImage;
36 public class OverviewRenderer
38 private FeatureColourFinder finder;
40 private jalview.api.SequenceRenderer sr;
43 private BufferedImage miniMe;
45 // raw number of pixels to allocate to each column
46 private float pixelsPerCol;
48 // raw number of pixels to allocate to each row
49 private float pixelsPerSeq;
51 public OverviewRenderer(jalview.api.SequenceRenderer seqRenderer,
52 FeatureRenderer fr, OverviewDimensions od)
55 finder = new FeatureColourFinder(fr);
57 pixelsPerCol = od.getPixelsPerCol();
58 pixelsPerSeq = od.getPixelsPerSeq();
59 miniMe = new BufferedImage(od.getWidth(), od.getHeight(),
60 BufferedImage.TYPE_INT_RGB);
64 * Draw alignment rows and columns onto an image
67 * Iterator over rows to be drawn
69 * Iterator over columns to be drawn
70 * @return image containing the drawing
72 public BufferedImage draw(AlignmentRowsCollectionI rows,
73 AlignmentColsCollectionI cols)
75 int rgbcolor = Color.white.getRGB();
78 for (int alignmentRow : rows)
80 // get details of this alignment row
81 boolean hidden = rows.isHidden(alignmentRow);
82 SequenceI seq = rows.getSequence(alignmentRow);
84 // calculate where this row extends to in pixels
85 int endRow = Math.min(Math.round((seqIndex + 1) * pixelsPerSeq) - 1,
86 miniMe.getHeight() - 1);
90 for (int alignmentCol : cols)
92 // calculate where this column extends to in pixels
93 int endCol = Math.min(
94 Math.round((colIndex + 1) * pixelsPerCol) - 1,
95 miniMe.getWidth() - 1);
97 // don't do expensive colour determination if we're not going to use it
98 // NB this is important to avoid performance issues in the overview
100 if (pixelCol <= endCol)
102 // determine the colour based on the sequence and column position
103 rgbcolor = getColumnColourFromSequence(seq,
104 hidden || cols.isHidden(alignmentCol), alignmentCol,
107 // fill in the appropriate number of pixels
108 for (int row = pixelRow; row <= endRow; ++row)
110 for (int col = pixelCol; col <= endCol; ++col)
112 miniMe.setRGB(col, row, rgbcolor);
116 pixelCol = endCol + 1;
120 pixelRow = endRow + 1;
127 * Find the colour of a sequence at a specified column position
129 private int getColumnColourFromSequence(jalview.datamodel.SequenceI seq,
130 boolean isHidden, int lastcol, FeatureColourFinder fcfinder)
132 Color color = Color.white;
134 if ((seq != null) && (seq.getLength() > lastcol))
136 color = sr.getResidueColour(seq, lastcol, fcfinder);
141 color = color.darker().darker();
144 return color.getRGB();
148 * Draw the alignment annotation in the overview panel
151 * the graphics object to draw on
153 * alignment annotation information
155 * alignment character width value
157 * y-position for the annotation graph
159 * the collection of columns used in the overview panel
161 public void drawGraph(Graphics g, AlignmentAnnotation anno, int charWidth,
162 int y, AlignmentColsCollectionI cols)
164 Annotation[] annotations = anno.annotations;
165 g.setColor(Color.white);
166 g.fillRect(0, 0, miniMe.getWidth(), y);
171 for (int alignmentCol : cols)
173 if (alignmentCol >= annotations.length)
175 break; // no more annotations to draw here
179 int endCol = Math.min(
180 Math.round((colIndex + 1) * pixelsPerCol) - 1,
181 miniMe.getWidth() - 1);
183 if (annotations[alignmentCol] != null)
185 if (annotations[alignmentCol].colour == null)
187 g.setColor(Color.black);
191 g.setColor(annotations[alignmentCol].colour);
194 height = (int) ((annotations[alignmentCol].value / anno.graphMax) * y);
200 g.fillRect(pixelCol, y - height, endCol - pixelCol + 1, height);
202 pixelCol = endCol + 1;