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 *       of conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
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package com.jogamp.opengl.test.junit.jogl.awt.text;

import java.awt.Font;
import java.io.OutputStream;
import java.io.PrintStream;

import com.jogamp.opengl.util.awt.TextRenderer;

import com.jogamp.opengl.GL2ES1;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
import com.jogamp.opengl.glu.GLU;

import org.junit.Assert;

/*
 * Unit tests for Bug464
 * GLEventListener for unit test TestAWTTextRendererUseVertexArrayBug464. The display
 * method renders the String "ABC123#+?" to the lower left corner of the canvas.
 *
 * The testNumber variable is used to switch between 2D- and 3D-textrendering in the display
 * method.
 * The disallowedMethodCalls variable is used to log VBO-related glFunction calls during
 * the execution of the test.
 *
 * Other classes related to this test:
 *   TestAWTTextRendererUseVertexArrayBug464
 *   TextRendererTraceGL2Mock01
 */

public class TextRendererGLEventListener01 implements GLEventListener {
    private final GLU glu = new GLU();
    private TextRenderer renderer;
    private String text;
    private String disallowedMethodCalls;
    private final int testNumber;

    public TextRendererGLEventListener01(final int testNumber) {
        this.disallowedMethodCalls = "";
        this.testNumber = testNumber;
    }

    public void init(final GLAutoDrawable drawable) {
        renderer = new TextRenderer(new Font("SansSerif", Font.BOLD, 36));
        renderer.setUseVertexArrays(false);
        Assert.assertNotNull(renderer);
        Assert.assertFalse(renderer.getUseVertexArrays());

        text = "ABC123#+?";

        final PrintStream nullStream = new PrintStream(new OutputStream(){ public void write(final int b){}});
        drawable.setGL(new TextRendererTraceGL2Mock01(drawable.getGL().getGL2(), nullStream, this));
    }

    public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
        final GL2 gl = drawable.getGL().getGL2();
        gl.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
        gl.glLoadIdentity();
        glu.gluOrtho2D(0, 1, 0, 1);
        gl.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
        gl.glLoadIdentity();
    }

    public void dispose(final GLAutoDrawable drawable) {
        renderer.dispose();
    }

    public void display(final GLAutoDrawable drawable) {
        if (disallowedMethodCalls.equals("")) {
            if (testNumber == 1) {
                renderer.beginRendering(drawable.getSurfaceWidth(), drawable.getSurfaceHeight());
                renderer.setColor(1.0f, 1.0f, 1.0f, 1.0f);
                renderer.draw(text, 0, 0);
                renderer.endRendering();
            }
            if (testNumber == 2) {
                renderer.begin3DRendering();
                renderer.setColor(1.0f, 1.0f, 1.0f, 1.0f);
                renderer.draw3D(text, 0, 0, 0, 0.002f);
                renderer.end3DRendering();
            }
        }
    }

    public void disallowedMethodCalled (final String method) {
        if (!disallowedMethodCalls.equals("")) {
            disallowedMethodCalls += ", ";
        }
        disallowedMethodCalls += method;
    }

    public String getDisallowedMethodCalls() {
        return this.disallowedMethodCalls;
    }
}