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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3662 | schaersvoo | 1 | /* |
| 2 | WIMSchem Elements: Chemistry molecular diagram drawing tool. |
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| 3 | |||
| 4 | (c) 2005 Dr. Alex M. Clark |
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| 5 | |||
| 6 | Released as GNUware, under the Gnu Public License (GPL) |
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| 7 | |||
| 8 | See www.gnu.org for details. |
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| 9 | */ |
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| 10 | |||
| 11 | package WIMSchem; |
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| 12 | |||
| 13 | import java.util.*; |
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| 14 | import java.text.*; |
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| 15 | import java.lang.*; |
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| 16 | import java.io.*; |
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| 17 | import javax.swing.*; |
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| 18 | import java.beans.*; |
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| 19 | import java.awt.*; |
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| 20 | |||
| 21 | // Previewing molecule-type files within the file choose mechanism. |
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| 22 | |||
| 23 | public class FileMolPreview extends EditorPane implements PropertyChangeListener |
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| 24 | { |
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| 25 | ImageIcon thumbnail=null; |
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| 26 | File file=null; |
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| 27 | |||
| 28 | public FileMolPreview(JFileChooser fc) |
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| 29 | { |
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| 30 | super(200,200); |
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| 31 | fc.addPropertyChangeListener(this); |
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| 32 | setBackground(Color.WHITE); |
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| 33 | SetBorder(true); |
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| 34 | SetToolCursor(); |
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| 35 | SetEditable(false); |
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| 36 | } |
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| 37 | |||
| 38 | public void propertyChange(PropertyChangeEvent ev) |
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| 39 | { |
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| 40 | boolean update=false; |
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| 41 | String prop=ev.getPropertyName(); |
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| 42 | |||
| 43 | if (JFileChooser.DIRECTORY_CHANGED_PROPERTY.equals(prop)) // changed directory, do nothing much |
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| 44 | { |
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| 45 | file=null; |
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| 46 | update=true; |
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| 47 | } |
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| 48 | else if (JFileChooser.SELECTED_FILE_CHANGED_PROPERTY.equals(prop)) // file just got selected |
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| 49 | { |
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| 50 | file=(File)ev.getNewValue(); |
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| 51 | update=true; |
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| 52 | } |
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| 53 | |||
| 54 | if (update) |
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| 55 | { |
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| 56 | thumbnail=null; |
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| 57 | Molecule mol=null; |
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| 58 | if (file!=null && file.isFile()) |
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| 59 | { |
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| 60 | try |
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| 61 | { |
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| 62 | FileInputStream istr=new FileInputStream(file); |
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| 63 | mol=MoleculeStream.ReadUnknown(istr); |
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| 64 | istr.close(); |
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| 65 | } |
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| 66 | catch (IOException e) |
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| 67 | { |
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| 68 | mol=null; |
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| 69 | } |
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| 70 | } |
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| 71 | if (mol==null) mol=new Molecule(); |
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| 72 | Replace(mol); |
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| 73 | ScaleToFit(); |
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| 74 | if (isShowing()) repaint(); |
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| 75 | } |
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| 76 | } |
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| 77 | |||
| 78 | protected void paintComponent(Graphics g) |
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| 79 | { |
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| 80 | Dimension sz=getSize(); |
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| 81 | int width=(int)sz.getWidth(),height=(int)sz.getHeight(); |
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| 82 | g.setColor(Color.WHITE); |
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| 83 | g.fillRect(0,0,width,height); |
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| 84 | g.setColor(Color.BLACK); |
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| 85 | g.drawRect(0,0,width,height); |
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| 86 | |||
| 87 | super.paintComponent(g); |
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| 88 | } |
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| 89 | } |