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.appletgui;
23 import jalview.renderer.OverviewRenderer;
24 import jalview.renderer.seqfeatures.FeatureColourFinder;
25 import jalview.viewmodel.OverviewDimensions;
27 import java.awt.Color;
28 import java.awt.Dimension;
29 import java.awt.Frame;
30 import java.awt.Graphics;
31 import java.awt.Image;
32 import java.awt.Panel;
34 public class OverviewCanvas extends Panel
36 // This is set true if the alignment view changes whilst
37 // the overview is being calculated
38 private volatile boolean restart = false;
40 private volatile boolean updaterunning = false;
42 private OverviewDimensions od;
46 private Image offscreen;
48 private AlignViewport av;
50 // Can set different properties in this seqCanvas than
51 // main visible SeqCanvas
52 private SequenceRenderer sr;
54 private jalview.renderer.seqfeatures.FeatureRenderer fr;
56 private Frame nullFrame;
58 public OverviewCanvas(OverviewDimensions overviewDims,
59 AlignViewport alignvp)
64 nullFrame = new Frame();
65 nullFrame.addNotify();
67 sr = new SequenceRenderer(av);
68 sr.graphics = nullFrame.getGraphics();
69 sr.renderGaps = false;
70 sr.forOverview = true;
71 fr = new jalview.renderer.seqfeatures.FeatureRenderer(av);
75 * Update the overview dimensions object used by the canvas (e.g. if we change
76 * from showing hidden columns to hiding them or vice versa)
80 public void resetOviewDims(OverviewDimensions overviewDims)
86 * Signals to drawing code that the associated alignment viewport has changed
87 * and a redraw will be required
89 public boolean restartDraw()
106 * Draw the overview sequences
108 * @param showSequenceFeatures
109 * true if sequence features are to be shown
110 * @param showAnnotation
111 * true if the annotation is to be shown
112 * @param transferRenderer
113 * the renderer to transfer feature colouring from
115 public void draw(boolean showSequenceFeatures, boolean showAnnotation,
116 FeatureRenderer transferRenderer)
120 if (showSequenceFeatures)
122 fr.transferSettings(transferRenderer);
124 FeatureColourFinder finder = new FeatureColourFinder(fr);
126 setPreferredSize(new Dimension(od.getWidth(), od.getHeight()));
128 OverviewRenderer or = new OverviewRenderer(sr, finder, od);
129 miniMe = nullFrame.createImage(od.getWidth(), od.getHeight());
130 offscreen = nullFrame.createImage(od.getWidth(), od.getHeight());
132 miniMe = or.draw(od.getRows(av.getAlignment()),
133 od.getColumns(av.getAlignment().getHiddenColumns()));
135 Graphics mg = miniMe.getGraphics();
137 // checks for conservation annotation to make sure overview works for DNA
141 mg.translate(0, od.getSequencesHeight());
142 or.drawGraph(mg, av.getAlignmentConservationAnnotation(),
143 av.getCharWidth(), od.getGraphHeight(),
144 od.getColumns(av.getAlignment().getHiddenColumns()));
145 mg.translate(0, -od.getSequencesHeight());
152 draw(showSequenceFeatures, showAnnotation, transferRenderer);
156 updaterunning = false;
161 public void update(Graphics g)
167 public void paint(Graphics g)
169 Graphics og = offscreen.getGraphics();
172 og.drawImage(miniMe, 0, 0, this);
173 og.setColor(Color.red);
175 g.drawImage(offscreen, 0, 0, this);