Updated the headless engine

src/main/java/org/warp/picalculator/gui/DisplayManager.java

@@ -87,6 +87,7 @@ public final class DisplayManager implements RenderingLoop {
 		d = new HeadlessEngine();
 		if (d.isSupported()) {
 			System.err.println("Using Headless Engine! This is a problem! No other graphic engines are available.");
+			return d;
 		}
 		throw new UnsupportedOperationException("No graphic engines available.");
 	}

src/main/java/org/warp/picalculator/gui/graphicengine/cpu/CPUEngine.java

@@ -471,6 +471,7 @@ public class CPUEngine implements GraphicEngine {
 
 	@Override
 	public boolean isSupported() {
+		if (true) return false;
 		return GraphicsEnvironment.isHeadless() == false;
 	}
 

src/main/java/org/warp/picalculator/gui/graphicengine/gpu/GPUEngine.java

@@ -125,6 +125,7 @@ public class GPUEngine implements org.warp.picalculator.gui.graphicengine.Graphi
 
 	@Override
 	public boolean isSupported() {
+		if (true) return false;
 		boolean available = false;
 		boolean errored = false;
 		try {

src/main/java/org/warp/picalculator/gui/graphicengine/headless/HeadlessEngine.java

@@ -1,4 +1,115 @@
 package org.warp.picalculator.gui.graphicengine.headless;
 
+import java.io.IOException;
+
+import org.warp.picalculator.gui.graphicengine.Renderer;
+import org.warp.picalculator.gui.graphicengine.RenderingLoop;
+import org.warp.picalculator.gui.graphicengine.Skin;
+
 public class HeadlessEngine implements org.warp.picalculator.gui.graphicengine.GraphicEngine {
+
+	private HeadlessRenderer r = new HeadlessRenderer();
+	private boolean stopped;
+	
+	@Override
+	public int[] getSize() {
+		return new int[]{480, 320};
+	}
+
+	@Override
+	public boolean isInitialized() {
+		return true;
+	}
+
+	@Override
+	public void setTitle(String title) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void setResizable(boolean r) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void setDisplayMode(int ww, int wh) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void create() {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public boolean wasResized() {
+		return false;
+	}
+
+	@Override
+	public int getWidth() {
+		return 480;
+	}
+
+	@Override
+	public int getHeight() {
+		return 320;
+	}
+
+	@Override
+	public void destroy() {
+		stopped = true;
+	}
+
+	@Override
+	public void start(RenderingLoop d) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void repaint() {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public Renderer getRenderer() {
+		return r;
+	}
+
+	@Override
+	public HeadlessFont loadFont(String file) throws IOException {
+		return new HeadlessFont();
+	}
+
+	@Override
+	public HeadlessSkin loadSkin(String file) throws IOException {
+		return new HeadlessSkin();
+	}
+
+	@Override
+	public void waitUntilExit() {
+		try {
+			do {
+				Thread.sleep(500);
+			} while (stopped==false);
+		} catch (final InterruptedException e) {
+
+		}
+	}
+
+	@Override
+	public boolean isSupported() {
+		return true;
+	}
+
+	@Override
+	public boolean doesRefreshPauses() {
+		return false;
+	}
 }

src/main/java/org/warp/picalculator/gui/graphicengine/headless/HeadlessFont.java

@@ -0,0 +1,42 @@
+package org.warp.picalculator.gui.graphicengine.headless;
+
+import java.io.IOException;
+
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+
+public class HeadlessFont implements BinaryFont {
+
+	@Override
+	public void load(String file) throws IOException {
+		
+	}
+
+	@Override
+	public void initialize(GraphicEngine d) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void use(GraphicEngine d) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public int getStringWidth(String text) {
+		return 5*text.length();
+	}
+
+	@Override
+	public int getCharacterWidth() {
+		return 5;
+	}
+
+	@Override
+	public int getCharacterHeight() {
+		return 5;
+	}
+
+}

src/main/java/org/warp/picalculator/gui/graphicengine/headless/HeadlessRenderer.java

@@ -1,5 +1,135 @@
 package org.warp.picalculator.gui.graphicengine.headless;
 
+import org.warp.picalculator.gui.graphicengine.Renderer;
+
 public class HeadlessRenderer implements Renderer {
+
+	HeadlessFont currentFont;
+	
+	@Override
+	public void glColor3i(int r, int gg, int b) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glColor(int c) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glColor4i(int red, int green, int blue, int alpha) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glColor3f(float red, float green, float blue) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glColor4f(float red, float green, float blue, float alpha) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glClearColor4i(int red, int green, int blue, int alpha) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glClearColor4f(float red, float green, float blue, float alpha) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public int glGetClearColor() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	@Override
+	public void glClearColor(int c) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glClear(int screenWidth, int screenHeight) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawLine(float x0, float y0, float x1, float y1) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glFillRect(float x, float y, float width, float height, float uvX, float uvY, float uvWidth,
+			float uvHeight) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glFillColor(float x, float y, float width, float height) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawCharLeft(int x, int y, char ch) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawCharCenter(int x, int y, char ch) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawCharRight(int x, int y, char ch) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawStringLeft(float x, float y, String text) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawStringCenter(float x, float y, String text) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glDrawStringRight(float x, float y, String text) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void glClearSkin() {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public HeadlessFont getCurrentFont() {
+		return currentFont;
+	}
 	
 }

src/main/java/org/warp/picalculator/gui/graphicengine/headless/HeadlessSkin.java

@@ -0,0 +1,28 @@
+package org.warp.picalculator.gui.graphicengine.headless;
+
+import java.io.IOException;
+
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.Skin;
+
+public class HeadlessSkin implements Skin {
+
+	@Override
+	public void load(String file) throws IOException {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void initialize(GraphicEngine d) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void use(GraphicEngine d) {
+		// TODO Auto-generated method stub
+
+	}
+
+}