X-Git-Url: https://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fgui%2Fcolour%2FColourChooser.java;fp=src%2Ftim%2Fprune%2Fgui%2Fcolour%2FColourChooser.java;h=3c40b4a86a3ee8d066250dd3435bcc2afe99f7f0;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/gui/colour/ColourChooser.java b/src/tim/prune/gui/colour/ColourChooser.java
new file mode 100644
index 0000000..3c40b4a
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+++ b/src/tim/prune/gui/colour/ColourChooser.java
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+package tim.prune.gui.colour;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.BoxLayout;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JSlider;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+
+import tim.prune.I18nManager;
+
+/**
+ * Class to offer a dialog to choose a colour.
+ * Normally a JColorChooser would be used, but this is too buggy
+ * in Java 1.6 and extremely prone to thread-locking, meaning
+ * that the application has to be killed (and all data lost).
+ */
+public class ColourChooser
+{
+	/** main dialog object */
+	private JDialog _dialog = null;
+	/** array of three slider objects for rgb */
+	private JSlider[] _rgbSliders = null;
+	/** array of labels for rgb values */
+	private JLabel[] _rgbLabels = null;
+	/** colour patch */
+	private ColourPatch _patch = null;
+	/** chosen colour */
+	private Color _chosenColour = null;
+
+
+	/**
+	 * Constructor
+	 * @param inParent parent dialog
+	 */
+	public ColourChooser(JDialog inParent)
+	{
+		_dialog = new JDialog(inParent, I18nManager.getText("dialog.colourchooser.title"), true);
+		_dialog.setLocationRelativeTo(inParent);
+		_dialog.getContentPane().add(makeContents());
+		_dialog.pack();
+	}
+
+	/**
+	 * Make the dialog contents
+	 * @return JPanel containing dialog elements
+	 */
+	private JPanel makeContents()
+	{
+		JPanel mainPanel = new JPanel();
+		mainPanel.setLayout(new BorderLayout());
+		_rgbSliders = new JSlider[3];
+		_rgbLabels = new JLabel[3];
+		_patch = new ColourPatch(Color.WHITE);
+		JPanel centrePanel = new JPanel();
+		centrePanel.setLayout(new BorderLayout());
+		centrePanel.add(_patch, BorderLayout.CENTER);
+
+		JPanel sliderPanel = new JPanel();
+		sliderPanel.setLayout(new BoxLayout(sliderPanel, BoxLayout.Y_AXIS));
+		final String[] labelKeys = {"red", "green", "blue"};
+		for (int i=0; i<3; i++)
+		{
+			String key = I18nManager.getText("dialog.colourchooser." + labelKeys[i]);
+			sliderPanel.add(new JLabel(key));
+			_rgbSliders[i] = new JSlider(0, 255);
+			_rgbSliders[i].addChangeListener(new ChangeListener() {
+				public void stateChanged(ChangeEvent arg0) {
+					updatePatch();
+				}
+			});
+			_rgbSliders[i].setToolTipText(key);
+			JPanel sliderHolder = new JPanel();
+			sliderHolder.setLayout(new BorderLayout(5, 0));
+			sliderHolder.add(_rgbSliders[i], BorderLayout.CENTER);
+			_rgbLabels[i] = new JLabel("255");
+			_rgbLabels[i].setPreferredSize(new Dimension(40, 1));
+			sliderHolder.add(_rgbLabels[i], BorderLayout.EAST);
+			sliderPanel.add(sliderHolder);
+		}
+		centrePanel.add(sliderPanel, BorderLayout.SOUTH);
+		mainPanel.add(centrePanel, BorderLayout.CENTER);
+
+		// Button panel for ok, cancel
+		JPanel buttonPanel = new JPanel();
+		buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+		JButton okButton = new JButton(I18nManager.getText("button.ok"));
+		okButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				_chosenColour = _patch.getBackground();
+				_dialog.setVisible(false);
+			}
+		});
+		buttonPanel.add(okButton);
+		JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
+		cancelButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				_chosenColour = null;
+				_dialog.setVisible(false);
+			}
+		});
+		buttonPanel.add(cancelButton);
+		mainPanel.add(buttonPanel, BorderLayout.SOUTH);
+		return mainPanel;
+	}
+
+	/**
+	 * Show the dialog to choose a colour
+	 * @param inStartColour current colour
+	 */
+	public void showDialog(Color inStartColour)
+	{
+		// Initialise sliders
+		_rgbSliders[0].setValue(inStartColour.getRed());
+		_rgbSliders[1].setValue(inStartColour.getGreen());
+		_rgbSliders[2].setValue(inStartColour.getBlue());
+		updatePatch();
+		_dialog.setLocationRelativeTo(_dialog.getParent());
+		_dialog.setVisible(true);
+	}
+
+	/**
+	 * Update the patch colour from the slider values
+	 */
+	private void updatePatch()
+	{
+		for (int i=0; i<3; i++) {
+			_rgbLabels[i].setText("" + _rgbSliders[i].getValue());
+		}
+		final Color colour = new Color(_rgbSliders[0].getValue(),
+			_rgbSliders[1].getValue(),_rgbSliders[2].getValue());
+		_patch.setColour(colour);
+	}
+
+	/**
+	 * @return the selected colour, or null if cancel pressed
+	 */
+	public Color getChosenColour()
+	{
+		return _chosenColour;
+	}
+}