132 lines
2.4 KiB
Java
132 lines
2.4 KiB
Java
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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private void applyRange()
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{
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currentScroll = Math.max( Math.min( currentScroll, maxScroll ), minScroll );
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}
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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 ( getRange() == 0 )
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{
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g.drawTexturedModalRect( displayX, displayY, 232 + width, 0, width, 15 );
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}
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else
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{
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int offset = (currentScroll - minScroll) * (height - 15) / getRange();
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g.drawTexturedModalRect( displayX, offset + displayY, 232, 0, 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 maxScroll - minScroll;
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}
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public int getLeft()
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{
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return displayX;
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}
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public int getTop()
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{
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return displayY;
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}
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public int getWidth()
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{
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return width;
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}
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public int getHeight()
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{
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return height;
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}
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public GuiScrollbar setLeft(int v)
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{
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displayX = v;
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return this;
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}
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public GuiScrollbar setTop(int v)
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{
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displayY = v;
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return this;
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}
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public GuiScrollbar setWidth(int v)
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{
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width = v;
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return this;
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}
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public GuiScrollbar setHeight(int v)
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{
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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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minScroll = min;
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maxScroll = max;
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this.pageSize = pageSize;
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if ( minScroll > maxScroll )
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maxScroll = minScroll;
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applyRange();
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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 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 ( getRange() == 0 )
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return;
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if ( x > displayX && x <= displayX + width )
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{
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if ( y > displayY && y <= displayY + height )
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{
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currentScroll = (y - displayY);
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currentScroll = minScroll + ((currentScroll * 2 * getRange() / height));
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currentScroll = (currentScroll + 1) >> 1;
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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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currentScroll += delta * pageSize;
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applyRange();
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}
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}
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