Java tutorial
/* * Forge Mod Loader * Copyright (c) 2012-2014 cpw. * All rights reserved. This program and the accompanying materials * are made available under the terms of the GNU Lesser Public License v2.1 * which accompanies this distribution, and is available at * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * * Contributors (this class): * bspkrs - implementation */ package cpw.mods.fml.client.config; import net.minecraft.client.Minecraft; import org.lwjgl.opengl.GL11; /** * This class provides a button that shows a string glyph at the beginning. The glyph can be scaled using the glyphScale parameter. * * @author bspkrs */ public class GuiUnicodeGlyphButton extends GuiButtonExt { public String glyph; public float glyphScale; public GuiUnicodeGlyphButton(int id, int xPos, int yPos, int width, int height, String displayString, String glyph, float glyphScale) { super(id, xPos, yPos, width, height, displayString); this.glyph = glyph; this.glyphScale = glyphScale; } @Override public void drawButton(Minecraft mc, int mouseX, int mouseY) { if (this.visible) { this.field_146123_n = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height; int k = this.getHoverState(this.field_146123_n); GuiUtils.drawContinuousTexturedBox(buttonTextures, this.xPosition, this.yPosition, 0, 46 + k * 20, this.width, this.height, 200, 20, 2, 3, 2, 2, this.zLevel); this.mouseDragged(mc, mouseX, mouseY); int color = 14737632; if (packedFGColour != 0) { color = packedFGColour; } else if (!this.enabled) { color = 10526880; } else if (this.field_146123_n) { color = 16777120; } String buttonText = this.displayString; int glyphWidth = (int) (mc.fontRenderer.getStringWidth(glyph) * glyphScale); int strWidth = mc.fontRenderer.getStringWidth(buttonText); int elipsisWidth = mc.fontRenderer.getStringWidth("..."); int totalWidth = strWidth + glyphWidth; if (totalWidth > width - 6 && totalWidth > elipsisWidth) buttonText = mc.fontRenderer.trimStringToWidth(buttonText, width - 6 - elipsisWidth).trim() + "..."; strWidth = mc.fontRenderer.getStringWidth(buttonText); totalWidth = glyphWidth + strWidth; GL11.glPushMatrix(); GL11.glScalef(glyphScale, glyphScale, 1.0F); this.drawCenteredString(mc.fontRenderer, glyph, (int) (((this.xPosition + (this.width / 2) - (strWidth / 2)) / glyphScale) - (glyphWidth / (2 * glyphScale)) + 2), (int) (((this.yPosition + ((this.height - 8) / glyphScale) / 2) - 1) / glyphScale), color); GL11.glPopMatrix(); this.drawCenteredString(mc.fontRenderer, buttonText, (int) (this.xPosition + (this.width / 2) + (glyphWidth / glyphScale)), this.yPosition + (this.height - 8) / 2, color); } } }