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.
23 import jalview.bin.Cache;
24 import jalview.bin.Jalview;
25 import jalview.io.JalviewFileChooser;
26 import jalview.io.JalviewFileView;
27 import jalview.util.ImageMaker;
28 import jalview.util.ImageMaker.TYPE;
29 import jalview.util.MessageManager;
30 import jalview.util.Platform;
32 import java.awt.Component;
33 import java.awt.Graphics;
35 import java.util.concurrent.atomic.AtomicBoolean;
38 * A class that marshals steps in exporting a view in image graphics format
40 * <li>prompts the user for the output file, if not already specified</li>
41 * <li>prompts the user for Text or Lineart character rendering, if
43 * <li>instantiates an ImageMaker to create the appropriate Graphics output
44 * context for the image format</li>
45 * <li>invokes a callback to do the work of writing to the graphics</li>
51 public class ImageExporter
53 // todo move interface to jalview.api? or replace with lambda?
55 * An interface for the callback that can be run to write the image on to the
56 * graphics object. The callback should throw any exceptions arising so they
57 * can be reported by this class.
59 public interface ImageWriterI
61 void exportImage(Graphics g) throws Exception;
64 private IProgressIndicator messageBoard;
66 private ImageWriterI imageWriter;
73 * Constructor given a callback handler to write graphics data, an (optional)
74 * target for status messages, image type and (optional) title for output file
81 public ImageExporter(ImageWriterI writer, IProgressIndicator statusBar,
82 TYPE type, String fileTitle)
84 this.imageWriter = writer;
85 this.messageBoard = statusBar;
86 this.imageType = type;
87 this.title = fileTitle;
91 * Prompts the user for output file and Text/Lineart options as required,
92 * configures a Graphics context for output, and makes a callback to the
93 * client code to perform the image output
96 * output file (if null, user is prompted to choose)
98 * parent component for any dialogs shown
102 * what the image is of e.g. Tree, Alignment
104 public void doExport(File file, Component parent, int width, int height,
107 final long messageId = System.currentTimeMillis();
109 MessageManager.formatMessage(
110 "status.exporting_alignment_as_x_file", imageType),
114 * prompt user for output file if not provided
116 if (file == null && !Jalview.isHeadlessMode())
118 JalviewFileChooser chooser = imageType.getFileChooser();
119 chooser.setFileView(new JalviewFileView());
120 MessageManager.formatMessage("label.create_image_of",
121 imageType.getName(), imageSource);
122 String title = "Create " + imageType.getName()
123 + " image from alignment";
124 chooser.setDialogTitle(title);
125 chooser.setToolTipText(MessageManager.getString("action.save"));
126 int value = chooser.showSaveDialog(parent);
127 if (value != JalviewFileChooser.APPROVE_OPTION)
129 String msg = MessageManager.formatMessage(
130 "status.cancelled_image_export_operation", imageType.name);
131 setStatus(msg, messageId);
134 Cache.setProperty("LAST_DIRECTORY",
135 chooser.getSelectedFile().getParent());
136 file = chooser.getSelectedFile();
140 * Prompt for Text or Lineart (EPS/SVG) unless a preference is already set
141 * for this as EPS_RENDERING / SVG_RENDERING
142 * Always set to Text for JalviewJS as Lineart (glyph fonts) not available
144 String renderStyle = Cache.getDefault(
145 imageType.getName() + "_RENDERING",
146 LineartOptions.PROMPT_EACH_TIME);
149 renderStyle = "Text";
151 AtomicBoolean textSelected = new AtomicBoolean(
152 !"Lineart".equals(renderStyle));
153 if ((imageType == TYPE.EPS || imageType == TYPE.SVG)
154 && LineartOptions.PROMPT_EACH_TIME.equals(renderStyle)
155 && !Jalview.isHeadlessMode())
157 final File chosenFile = file;
158 Runnable okAction = new Runnable()
163 exportImage(chosenFile, !textSelected.get(), width, height,
167 LineartOptions epsOption = new LineartOptions(TYPE.EPS.getName(),
169 epsOption.setResponseAction(1, new Runnable()
174 setStatus(MessageManager.formatMessage(
175 "status.cancelled_image_export_operation",
176 imageType.getName()), messageId);
179 epsOption.setResponseAction(0, okAction);
180 epsOption.showDialog();
181 /* no code here - JalviewJS cannot execute it */
186 * character rendering not required, or preference already set
187 * - just do the export
189 exportImage(file, !textSelected.get(), width, height, messageId);
194 * Constructs a suitable graphics context and passes it to the callback
195 * handler for the image to be written. Shows status messages for export in
196 * progress, complete, or failed as appropriate.
204 protected void exportImage(File chosenFile, boolean asLineart, int width,
205 int height, long messageId)
207 String type = imageType.getName();
211 // MessageManager.formatMessage(
212 // "status.exporting_alignment_as_x_file", type),
214 ImageMaker im = new ImageMaker(imageType, width, height, chosenFile,
216 imageWriter.exportImage(im.getGraphics());
219 MessageManager.formatMessage("status.export_complete", type),
221 } catch (Exception e)
223 System.out.println(String.format("Error creating %s file: %s", type,
225 setStatus(MessageManager.formatMessage("info.error_creating_file",
231 * Asks the callback to show a status message with given id
236 void setStatus(String msg, long id)
238 if (messageBoard != null && !Jalview.isHeadlessMode())
240 messageBoard.setProgressBar(msg, id);