com.xrbpowered.gl.ui.AbstractLoadScreen.java Source code

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Here is the source code for com.xrbpowered.gl.ui.AbstractLoadScreen.java

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/*******************************************************************************
 * MIT License
 *
 * Copyright (c) 2016 Ashur Rafiev
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *******************************************************************************/
package com.xrbpowered.gl.ui;

import java.awt.Color;
import java.awt.Graphics2D;

import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;

import com.xrbpowered.gl.res.textures.BufferTexture;

public abstract class AbstractLoadScreen {

    private UIManager ui = new UIManager();
    private UIPane uiPane;
    private Color clearColor;

    private int progress = 0;
    private long timeStart;

    public AbstractLoadScreen(final int maxProgress, int w, int h, Color clearColor) {
        this.clearColor = clearColor;
        uiPane = new UIPane(ui, new BufferTexture(w, h, false, false, maxProgress > 0) {
            @Override
            protected boolean updateBuffer(Graphics2D g2, int w, int h) {
                float prog = maxProgress > 0 ? (float) progress / (float) maxProgress : 0f;
                if (prog > 1f)
                    prog = 1f;
                return AbstractLoadScreen.this.updateBuffer(g2, w, h,
                        (System.currentTimeMillis() - timeStart) / 1000f, prog);
            }
        });
    }

    private void display() {
        GL11.glClearColor(clearColor.getRed() / 255f, clearColor.getGreen() / 255f, clearColor.getBlue() / 255f,
                0f);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
        uiPane.x = Display.getWidth() / 2 - uiPane.getWidth() / 2;
        uiPane.y = Display.getHeight() / 2 - uiPane.getHeight() / 2;
        ui.draw(Display.getWidth(), Display.getHeight());
        Display.update();
    }

    public AbstractLoadScreen start() {
        timeStart = System.currentTimeMillis();
        progress = 0;
        uiPane.repaint();
        display();
        return this;
    }

    public void addProgress(int delta) {
        progress += delta;
        uiPane.repaint();
        display();
    }

    public void destroy() {
        uiPane.destroy();
    }

    protected abstract boolean updateBuffer(Graphics2D g2, int w, int h, float time, float progress);

}