Java tutorial
/* * Copyright 2015 TheShark34 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. You may obtain a * copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package fr.theshark34.sharkengine.ui.components; import java.awt.Color; import org.lwjgl.input.Mouse; import org.lwjgl.opengl.Display; import org.lwjgl.opengl.GL11; /** * The vertical slider component * * @author TheShark34 * @version ALPHA 0.0.1 */ public class VerticalSlider extends Component { /** * The slider background color */ private Color color; /** * The slider color */ private Color sliderColor; /** * The slider height */ private int sliderHeight; /** * The slider y pos */ private int sliderY; /** * If the mouse clicked the slider */ private boolean clicked; /** * The mouse click point */ private int mouseClick; /** * Lightest constructor * * @param x * The x pos * @param y * The y pos * @param width * The width * @param height * The height */ public VerticalSlider(int x, int y, int width, int height) { this.x = x; this.y = y; this.width = width; this.height = height; this.color = new Color(1.0F, 1.0F, 1.0F, 0.2F); createSliderColor(); this.sliderHeight = 150; } /** * Normal constructor * * @param x * The x pos * @param y * The y pos * @param width * The width * @param height * The height * @param color * The slider background color */ public VerticalSlider(int x, int y, int width, int height, Color color) { this.x = x; this.y = y; this.width = width; this.height = height; this.color = color; createSliderColor(); this.sliderHeight = 150; } /** * Full constructor * * @param x * The x pos * @param y * The y pos * @param width * The width * @param height * The height * @param color * The slider background color * @param sliderColor * The slider color */ public VerticalSlider(int x, int y, int width, int height, Color color, Color sliderColor) { this.x = x; this.y = y; this.width = width; this.height = height; this.color = color; this.sliderColor = sliderColor; this.sliderHeight = 150; } /** * Try to create a color when the mouse in on the button from the base * button color, it cans sometimes be ugly */ private void createSliderColor() { // If the color is white if (this.color.getRed() == 255 && this.color.getGreen() == 255 && this.color.getBlue() == 255) // If the alpha is less than 235 if (this.color.getAlpha() < 235) // Setting the color a little more opaque than the base color this.sliderColor = new Color(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha() + 20); else // Else the color a little more transparent than the base color this.sliderColor = new Color(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha() - 20); else // Else setting the color a little brighter than the base color this.sliderColor = new Color(color.getRed() + 15, color.getGreen() + 15, color.getBlue() + 15); // If the red is to high if (this.sliderColor.getRed() > 255) // Reducing it this.sliderColor = new Color(this.sliderColor.getRed() - 30, this.sliderColor.getGreen(), this.sliderColor.getBlue()); // If the green is to high if (this.sliderColor.getGreen() > 255) // Reducing it this.sliderColor = new Color(this.sliderColor.getRed(), this.sliderColor.getGreen() - 30, this.sliderColor.getBlue()); // If the blue is to high if (this.sliderColor.getBlue() > 255) // Reducing it this.sliderColor = new Color(this.sliderColor.getRed(), this.sliderColor.getGreen(), this.sliderColor.getBlue() - 30); } /** * Draw the slider */ @Override public void draw() { // Enabling blending GL11.glEnable(GL11.GL_BLEND); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); // Being sure that texturing is disabled GL11.glDisable(GL11.GL_TEXTURE_2D); // Check if the mouse is on the slider if (Mouse.getX() > this.x && Mouse.getX() < this.x + width && Mouse.getY() < Display.getHeight() - this.y + this.sliderY && Mouse.getY() > Display.getHeight() - this.y - this.sliderY - this.sliderHeight) { // If the mouse clicked and clicked is false, settings clicked to // true and saving mouse initial click if (Mouse.isButtonDown(0)) { if (!clicked) { clicked = true; mouseClick = Display.getHeight() - Mouse.getY(); } } else // If mouse isn't on it, setting clicked to false clicked = false; } // Setting clicked to false only when the mouse stop clicking else if (!Mouse.isButtonDown(0)) clicked = false; // If mouse clicked if (clicked) { // If slider isn't on the minimum / maximum if (sliderY >= 0 && sliderY + sliderHeight <= height) if (sliderY + Display.getHeight() - Mouse.getY() - mouseClick >= 0) if (sliderY + sliderHeight + Display.getHeight() - Mouse.getY() - mouseClick <= height) { sliderY += Display.getHeight() - Mouse.getY() - mouseClick; mouseClick = Display.getHeight() - Mouse.getY(); } else sliderY = height - sliderHeight; else sliderY = 0; } // Picking the background color GL11.glColor4f((float) color.getRed() / 255, (float) color.getGreen() / 255, (float) color.getBlue() / 255, (float) color.getAlpha() / 255); // Drawing the slider background GL11.glBegin(GL11.GL_QUADS); { GL11.glVertex2f(x, y); GL11.glVertex2f(x + width, y); GL11.glVertex2f(x + width, y + height); GL11.glVertex2f(x, y + height); } GL11.glEnd(); // Picking the slider color GL11.glColor4f((float) sliderColor.getRed() / 255, (float) sliderColor.getGreen() / 255, (float) sliderColor.getBlue() / 255, (float) sliderColor.getAlpha() / 255); // Drawing the slider GL11.glBegin(GL11.GL_QUADS); { GL11.glVertex2f(x, y + sliderY); GL11.glVertex2f(x + width, y + sliderY); GL11.glVertex2f(x + width, y + sliderY + sliderHeight); GL11.glVertex2f(x, y + sliderY + sliderHeight); } GL11.glEnd(); } /** * Return the slider background color * * @return The slider background color */ public Color getColor() { return color; } /** * Set a new background color * * @param color * The new background color */ public void setColor(Color color) { this.color = color; } /** * Return the slider color * * @return The slider color */ public Color getSliderColor() { return sliderColor; } /** * Set a new slider color * * @param sliderColor * The new slider color */ public void setSliderColor(Color sliderColor) { this.sliderColor = sliderColor; } /** * Return the slider height (by default 150) * * @return The slider height */ public int getSliderHeight() { return sliderHeight; } /** * Set a new slider height (by default 150) * * @param sliderHeight * The new slider height */ public void setSliderHeight(int sliderHeight) { this.sliderHeight = sliderHeight; } /** * Return the slider Y from 0 to height - sliderHeight * * @return The slider Y */ public int getSliderY() { return sliderY; } }