com.viaoa.jfc.editor.image.control.BrightnessPanelController Maven / Gradle / Ivy

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/*  Copyright 1999-2015 Vince Via [email protected]
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
package com.viaoa.jfc.editor.image.control;

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.text.*;

import com.viaoa.jfc.editor.image.view.BrightnessPanel;
import com.viaoa.jfc.editor.image.view.ScalePanel;

/**
 * Used to manage a BrightnessPanel.
 */
public abstract class BrightnessPanelController {

    private BrightnessPanel panBrightness;
    private JPopupMenu popupBrightness;
    

    public BrightnessPanelController() {
    }

    public BrightnessPanel getBrightnessPanel() {
        if (panBrightness == null) {
            panBrightness = new BrightnessPanel() {
                @Override
                public void onOkCommand() {
                    int x = panBrightness.getBrightnessSlider().getValue();
                    popupBrightness.setVisible(false);
                    BrightnessPanelController.this.onOkCommand(x);
                }
            };
            
            panBrightness.getBrightnessSlider().addChangeListener(new ChangeListener() {
                @Override
                public void stateChanged(ChangeEvent e) {
                    int x = panBrightness.getBrightnessSlider().getValue();
                    panBrightness.getLabel().setText(""+x);
                    BrightnessPanelController.this.onSlideChange(x);
                }
            });
        }
        return panBrightness;
    }

    /** 
     * Popup used to display panel.
     */
    protected JPopupMenu getBrightnessPopup() {
        if (popupBrightness != null) return popupBrightness;
        
        popupBrightness = new JPopupMenu();
        
        popupBrightness.addPopupMenuListener(new PopupMenuListener() {
            @Override
            public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
                BrightnessPanelController.this.onStart();
            }
            @Override
            public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
                BrightnessPanelController.this.onEnd();
            }
            @Override
            public void popupMenuCanceled(PopupMenuEvent e) {
            }
        });
        
        popupBrightness.setBorder(BorderFactory.createLineBorder(Color.lightGray));
        popupBrightness.setLayout(new BorderLayout());
        JPanel pan = getBrightnessPanel();
        Border border = new CompoundBorder(new LineBorder(Color.lightGray), new EmptyBorder(2,2,2,2));
        pan.setBorder(border);
        popupBrightness.add(pan);
        
        return popupBrightness;
    }
  
    public int getBrightness() {
        return getBrightnessPanel().getBrightnessSlider().getValue();
    }
    public void setBrightness(int x) {
        getBrightnessPanel().getBrightnessSlider().setValue(x);
    }
    
    protected abstract void onSlideChange(int x);
    protected abstract void onOkCommand(int x);
    protected abstract void onStart();
    protected abstract void onEnd();
    
}