com.opengg.module.swt.window.GGCanvas.java Source code

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Here is the source code for com.opengg.module.swt.window.GGCanvas.java

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package com.opengg.module.swt.window;

import com.opengg.core.exceptions.WindowCreationException;
import com.opengg.core.io.input.keyboard.KeyboardController;
import com.opengg.core.io.input.mouse.MouseController;
import com.opengg.core.math.FastInt;
import com.opengg.core.render.window.Window;
import com.opengg.core.render.window.WindowInfo;
import com.opengg.module.swt.input.SWTKeyboardHandler;
import com.opengg.module.swt.input.SWTMouseButtonHandler;
import com.opengg.module.swt.input.SWTMousePosHandler;
import com.opengg.module.swt.window.GLData.API;
import com.opengg.module.swt.window.GLData.Profile;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Shell;
import org.lwjgl.opengl.GL;
import static org.lwjgl.opengl.GL11.GL_NO_ERROR;
import static org.lwjgl.opengl.GL11.glGetError;

/**
 *
 * @author Javier
 */
public class GGCanvas implements Window {
    Shell shell;

    long id;
    GLCanvas canvas;
    boolean success = false;

    SWTKeyboardHandler keyCallback;
    SWTMousePosHandler mousePosCallback;
    SWTMouseButtonHandler mouseCallback;

    public GGCanvas(Shell shell) {
        this.shell = shell;
    }

    @Override
    public void setup(WindowInfo window) {
        GLData data = new GLData();
        data.api = API.GL;
        data.majorVersion = 4;
        data.minorVersion = 1;
        data.samples = 1;
        data.redSize = window.rbit;
        data.blueSize = window.bbit;
        data.greenSize = window.gbit;
        data.profile = Profile.CORE;
        data.swapInterval = window.vsync ? 1 : 0;
        data.forwardCompatible = true;
        shell.getDisplay().syncExec(() -> {
            canvas = new GLCanvas(shell, SWT.NO_BACKGROUND | (window.resizable ? SWT.RESIZE : SWT.NO_REDRAW_RESIZE),
                    data);

            canvas.setSize(window.width, window.height);
            id = canvas.context;

            canvas.addKeyListener(keyCallback = new SWTKeyboardHandler());
            canvas.addMouseMoveListener(mousePosCallback = new SWTMousePosHandler());
            canvas.addMouseListener(mouseCallback = new SWTMouseButtonHandler());

            KeyboardController.setHandler(keyCallback);
            MouseController.setPosHandler(mousePosCallback);
            MouseController.setButtonHandler(mouseCallback);
        });
        canvas.setCurrent();
        GL.createCapabilities();

        if (glGetError() == GL_NO_ERROR) {
            success = true;
        } else
            throw new WindowCreationException("OpenGL initialization during window creation failed");

    }

    public GLCanvas getCanvas() {
        return canvas;
    }

    @Override
    public void endFrame() {
        canvas.swapBuffers();
    }

    @Override
    public float getRatio() {
        return (float) getWidth() / (float) getHeight();
    }

    @Override
    public boolean shouldClose() {
        return shell.isDisposed();
    }

    @Override
    public void destroy() {

    }

    @Override
    public long getID() {
        return id;
    }

    @Override
    public int getWidth() {
        FastInt width = new FastInt();
        shell.getDisplay().syncExec(() -> {
            width.set(canvas.getBounds().width);
        });
        return width.get();
    }

    @Override
    public int getHeight() {
        FastInt height = new FastInt();
        shell.getDisplay().syncExec(() -> {
            height.set(canvas.getBounds().height);
        });
        return height.get();
    }

    @Override
    public boolean getSuccessfulConstruction() {
        return success;
    }

    @Override
    public void setIcon(String path) throws Exception {

    }

    @Override
    public void setVSync(boolean vsync) {

    }

    @Override
    public String getType() {
        return "SWT";
    }
}