156 lines
3.3 KiB
Java
156 lines
3.3 KiB
Java
/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.client.gui.widgets;
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import org.lwjgl.opengl.GL11;
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import appeng.client.gui.AEBaseGui;
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public class GuiScrollbar implements IScrollSource
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{
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private int displayX = 0;
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private int displayY = 0;
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private int width = 12;
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private int height = 16;
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private int pageSize = 1;
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private int maxScroll = 0;
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private int minScroll = 0;
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private int currentScroll = 0;
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public void draw( AEBaseGui g )
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{
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g.bindTexture( "minecraft", "gui/container/creative_inventory/tabs.png" );
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GL11.glColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
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if( this.getRange() == 0 )
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{
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g.drawTexturedModalRect( this.displayX, this.displayY, 232 + this.width, 0, this.width, 15 );
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}
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else
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{
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int offset = ( this.currentScroll - this.minScroll ) * ( this.height - 15 ) / this.getRange();
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g.drawTexturedModalRect( this.displayX, offset + this.displayY, 232, 0, this.width, 15 );
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}
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}
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public int getRange()
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{
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return this.maxScroll - this.minScroll;
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}
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public int getLeft()
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{
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return this.displayX;
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}
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public GuiScrollbar setLeft( int v )
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{
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this.displayX = v;
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return this;
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}
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public int getTop()
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{
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return this.displayY;
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}
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public GuiScrollbar setTop( int v )
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{
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this.displayY = v;
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return this;
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}
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public int getWidth()
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{
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return this.width;
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}
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public GuiScrollbar setWidth( int v )
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{
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this.width = v;
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return this;
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}
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public int getHeight()
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{
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return this.height;
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}
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public GuiScrollbar setHeight( int v )
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{
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this.height = v;
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return this;
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}
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public void setRange( int min, int max, int pageSize )
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{
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this.minScroll = min;
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this.maxScroll = max;
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this.pageSize = pageSize;
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if( this.minScroll > this.maxScroll )
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{
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this.maxScroll = this.minScroll;
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}
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this.applyRange();
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}
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private void applyRange()
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{
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this.currentScroll = Math.max( Math.min( this.currentScroll, this.maxScroll ), this.minScroll );
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}
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@Override
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public int getCurrentScroll()
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{
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return this.currentScroll;
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}
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public void click( AEBaseGui aeBaseGui, int x, int y )
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{
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if( this.getRange() == 0 )
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{
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return;
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}
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if( x > this.displayX && x <= this.displayX + this.width )
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{
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if( y > this.displayY && y <= this.displayY + this.height )
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{
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this.currentScroll = ( y - this.displayY );
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this.currentScroll = this.minScroll + ( ( this.currentScroll * 2 * this.getRange() / this.height ) );
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this.currentScroll = ( this.currentScroll + 1 ) >> 1;
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this.applyRange();
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}
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}
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}
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public void wheel( int delta )
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{
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delta = Math.max( Math.min( -delta, 1 ), -1 );
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this.currentScroll += delta * this.pageSize;
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this.applyRange();
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}
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}
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