inputhandler.java

NeHe用java与OpenGL结合教程源码

package demos.nehe.lesson37;

import demos.common.GLDisplay;

import javax.swing.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

class InputHandler extends KeyAdapter {
    private Renderer renderer;

    public InputHandler(Renderer renderer, GLDisplay glDisplay) {
        this.renderer = renderer;
        glDisplay.registerKeyStrokeForHelp(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0), "Toggle rotation");
        glDisplay.registerKeyStrokeForHelp(KeyStroke.getKeyStroke(KeyEvent.VK_1, 0), "Toggle outline drawing");
        glDisplay.registerKeyStrokeForHelp(KeyStroke.getKeyStroke(KeyEvent.VK_2, 0), "Toggle outline smoothing");
        glDisplay.registerKeyStrokeForHelp(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0), "Increase outline width");
        glDisplay.registerKeyStrokeForHelp(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0), "Decrease outline width");
    }

    public void keyPressed(KeyEvent e) {
        processKeyEvent(e, true);
    }

    public void keyReleased(KeyEvent e) {
        switch (e.getKeyCode()) {
            case KeyEvent.VK_SPACE:                         // Is the Space Bar Being Pressed? ( NEW )
                renderer.toggleModelRotation();             // Toggle Model Rotation On/Off ( NEW )
                break;

            case KeyEvent.VK_1:                             // Is The Number 1 Being Pressed? ( NEW )
                renderer.toggelOutlineDraw();               // Toggle Outline Drawing On/Off ( NEW )
                break;

            case KeyEvent.VK_2:                             // Is The Number 2 Being Pressed? ( NEW )
                renderer.toggleOutlineSmooth();             // Toggle Anti-Aliasing On/Off ( NEW )
                break;
            default:
                processKeyEvent(e, false);
        }
    }

    private void processKeyEvent(KeyEvent e, boolean pressed) {
        switch (e.getKeyCode()) {
            case KeyEvent.VK_UP:                            // Is The Up Arrow Being Pressed? ( NEW )
                renderer.increaseOutlineWidth(pressed);       // Increase Line Width ( NEW )
                break;

            case KeyEvent.VK_DOWN:                          // Is The Down Arrow Being Pressed? ( NEW )
                renderer.decreaseOutlineWidth(pressed);       // Decrease Line Width ( NEW )
                break;
        }
    }
}