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package org.helioviewer.jhv.internal_plugins.filter.opacity;
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import javax.swing.BoxLayout;
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import javax.swing.JSpinner;
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import javax.swing.JTextField;
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import javax.swing.SpinnerNumberModel;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import org.helioviewer.jhv.gui.components.WheelSupport;
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import org.helioviewer.viewmodel.filter.Filter;
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import org.helioviewer.viewmodelplugin.filter.FilterAlignmentDetails;
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import org.helioviewer.viewmodelplugin.filter.FilterPanel;
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import org.helioviewer.viewmodelplugin.filter.FilterTabPanelManager.Area;
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* Panel containing a spinner for changing the opacity of the image.
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* @author Markus Langenberg
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public class OpacityPanel extends FilterPanel implements ChangeListener, FilterAlignmentDetails {
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private static final long serialVersionUID = 1L;
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private JSpinner opacitySpinner;
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private OpacityFilter filter;
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* Default constructor.
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public OpacityPanel() {
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setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
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// title.setPreferredSize(new Dimension(AbstractFilterPanel.titleWidth,
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// AbstractFilterPanel.height));
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opacitySpinner = new JSpinner();
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opacitySpinner.setModel(new SpinnerNumberModel(new Float(1), new Float(0), new Float(1), new Float(0.05f)));
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opacitySpinner.addChangeListener(this);
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JSpinner.NumberEditor editor = new JSpinner.NumberEditor(opacitySpinner, "0%");
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opacitySpinner.setEditor(editor);
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editor.getTextField().setColumns(3);
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editor.getTextField().setHorizontalAlignment(JTextField.CENTER);
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WheelSupport.installMouseWheelSupport(opacitySpinner);
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* Override the setEnabled method in order to keep the containing
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* components' enabledState synced with the enabledState of this component.
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public void setEnabled(boolean enabled) {
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super.setEnabled(enabled);
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opacitySpinner.setEnabled(enabled);
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public void setFilter(Filter filter) {
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if (filter instanceof OpacityFilter) {
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this.filter = (OpacityFilter) filter;
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this.filter.setPanel(this);
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public Area getArea() {
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* Sets the opacity of the image.
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public void stateChanged(ChangeEvent e) {
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float value = ((SpinnerNumberModel) opacitySpinner.getModel()).getNumber().floatValue();
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filter.setOpacity(value);
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* Sets the opacity value.
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* This may be useful, if the opacity is changed from another source than
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* New opacity value. Must be within [0, 100]
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void setValue(float opacity) {
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((SpinnerNumberModel) opacitySpinner.getModel()).setValue(opacity);
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public int getDetails() {
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return FilterAlignmentDetails.POSITION_OPACITY;