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.viewmodel.OverviewDimensions;
26 import java.awt.Color;
27 import java.awt.Dimension;
28 import java.awt.Frame;
29 import java.awt.Graphics;
30 import java.awt.Image;
31 import java.awt.Panel;
33 public class OverviewCanvas extends Panel
35 // This is set true if the alignment view changes whilst
36 // the overview is being calculated
37 private volatile boolean restart = false;
39 private volatile boolean updaterunning = false;
41 private OverviewDimensions od;
45 private Image offscreen;
47 private AlignViewport av;
49 // Can set different properties in this seqCanvas than
50 // main visible SeqCanvas
51 private SequenceRenderer sr;
53 private jalview.renderer.seqfeatures.FeatureRenderer fr;
55 private Frame nullFrame;
57 public OverviewCanvas(OverviewDimensions overviewDims,
58 AlignViewport alignvp)
63 nullFrame = new Frame();
64 nullFrame.addNotify();
66 sr = new SequenceRenderer(av);
67 sr.graphics = nullFrame.getGraphics();
68 sr.renderGaps = false;
69 sr.forOverview = true;
70 fr = new jalview.renderer.seqfeatures.FeatureRenderer(av);
74 * Update the overview dimensions object used by the canvas (e.g. if we change
75 * from showing hidden columns to hiding them or vice versa)
79 public void resetOviewDims(OverviewDimensions overviewDims)
85 * Signals to drawing code that the associated alignment viewport has changed
86 * and a redraw will be required
88 public boolean restartDraw()
105 * Draw the overview sequences
107 * @param showSequenceFeatures
108 * true if sequence features are to be shown
109 * @param showAnnotation
110 * true if the annotation is to be shown
111 * @param transferRenderer
112 * the renderer to transfer feature colouring from
114 public void draw(boolean showSequenceFeatures, boolean showAnnotation,
115 FeatureRenderer transferRenderer)
119 if (showSequenceFeatures)
121 fr.transferSettings(transferRenderer);
124 setPreferredSize(new Dimension(od.getWidth(), od.getHeight()));
126 OverviewRenderer or = new OverviewRenderer(sr, fr, od);
127 miniMe = nullFrame.createImage(od.getWidth(), od.getHeight());
128 offscreen = nullFrame.createImage(od.getWidth(), od.getHeight());
130 miniMe = or.draw(od.getRows(av.getAlignment()),
131 od.getColumns(av.getAlignment().getHiddenColumns()));
133 Graphics mg = miniMe.getGraphics();
135 // checks for conservation annotation to make sure overview works for DNA
139 mg.translate(0, od.getSequencesHeight());
140 or.drawGraph(mg, av.getAlignmentConservationAnnotation(),
141 av.getCharWidth(), od.getGraphHeight(),
142 od.getColumns(av.getAlignment().getHiddenColumns()));
143 mg.translate(0, -od.getSequencesHeight());
150 draw(showSequenceFeatures, showAnnotation, transferRenderer);
154 updaterunning = false;
159 public void update(Graphics g)
165 public void paint(Graphics g)
167 Graphics og = offscreen.getGraphics();
170 og.drawImage(miniMe, 0, 0, this);
171 og.setColor(Color.red);
173 g.drawImage(offscreen, 0, 0, this);