NatTable/src/org/eclipse/nebula/widgets/nattable/core/layer/impl/composite/CompositeLayerPainter.xtend

package org.eclipse.nebula.widgets.nattable.core.layer.impl.composite

import javax.inject.Inject
import org.eclipse.nebula.widgets.nattable.core.geometry.PixelRectangle
import org.eclipse.nebula.widgets.nattable.core.graphics.GraphicsContext
import org.eclipse.nebula.widgets.nattable.core.graphics.PainterFactory
import org.eclipse.nebula.widgets.nattable.core.layer.LayerPainter

import static extension org.eclipse.nebula.widgets.nattable.core.layer.LayerInvariants.*

class CompositeLayerPainter implements LayerPainter<CompositeLayer> {
	
	@Inject extension PainterFactory
	
	override paintLayer(CompositeLayer compositeLayer, GraphicsContext gc) {
		var yOffset = 0
		for (row : compositeLayer.rows) {
			var xOffset = 0
			
			for (childLayer : row.childLayers) {
				gc.pushState
				gc.translate(xOffset, yOffset)
				if (childLayer.pixelWidth <= 0 || childLayer.pixelHeight <= 0)
					println("oh no!")
				gc.clipBounds = new PixelRectangle(0, 0, childLayer.pixelWidth, childLayer.pixelHeight)
				childLayer.layerPainter.paintLayer(childLayer, gc)
				gc.popState
				
				xOffset = xOffset + childLayer.pixelWidth
			}
			
			yOffset = yOffset + row.childLayers.get(0).pixelHeight
		}
	}
	
}