/*
 * Copyright (c) 2018, Jeremy Plsek <https://github.com/jplsek>
 * Copyright (c) 2019, Adam <Adam@sigterm.info>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package net.runelite.client.plugins.inventorygrid;

import com.google.inject.Inject;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import net.runelite.api.Client;
import net.runelite.api.Constants;
import net.runelite.api.widgets.Widget;
import net.runelite.api.widgets.WidgetInfo;
import net.runelite.api.widgets.WidgetItem;
import net.runelite.client.game.ItemManager;
import net.runelite.client.ui.overlay.Overlay;
import net.runelite.client.ui.overlay.OverlayLayer;
import net.runelite.client.ui.overlay.OverlayPosition;

class InventoryGridOverlay extends Overlay
{
	private static final int INVENTORY_SIZE = 28;

	private static final Color HIGHLIGHT = new Color(0, 255, 0, 45);
	private static final Color GRID = new Color(255, 255, 255, 45);

	private final InventoryGridConfig config;
	private final Client client;
	private final ItemManager itemManager;

	@Inject
	private InventoryGridOverlay(InventoryGridConfig config, Client client, ItemManager itemManager)
	{
		this.itemManager = itemManager;
		this.client = client;
		this.config = config;

		setPosition(OverlayPosition.DYNAMIC);
		setLayer(OverlayLayer.ABOVE_WIDGETS);
	}

	@Override
	public Dimension render(Graphics2D graphics)
	{
		final Widget if1DraggingWidget = client.getIf1DraggedWidget();
		final Widget inventoryWidget = client.getWidget(WidgetInfo.INVENTORY);

		if (if1DraggingWidget == null || if1DraggingWidget != inventoryWidget
			|| client.getItemPressedDuration() < config.dragDelay() / Constants.CLIENT_TICK_LENGTH)
		{
			return null;
		}

		final net.runelite.api.Point mouse = client.getMouseCanvasPosition();
		final Point mousePoint = new Point(mouse.getX(), mouse.getY());

		for (int i = 0; i < INVENTORY_SIZE; ++i)
		{
			WidgetItem widgetItem = inventoryWidget.getWidgetItem(i);

			final Rectangle bounds = widgetItem.getCanvasBounds();
			boolean inBounds = bounds.contains(mousePoint);

			if (config.showItem() && inBounds)
			{
				final WidgetItem draggedItem = inventoryWidget.getWidgetItem(client.getIf1DraggedItemIndex());
				final BufferedImage draggedItemImage = itemManager.getImage(draggedItem.getId());
				final int x = (int) bounds.getX();
				final int y = (int) bounds.getY();

				graphics.setComposite(AlphaComposite.SrcOver.derive(0.3f));
				graphics.drawImage(draggedItemImage, x, y, null);
				graphics.setComposite(AlphaComposite.SrcOver);
			}

			if (config.showHighlight() && inBounds)
			{
				graphics.setColor(HIGHLIGHT);
				graphics.fill(bounds);
			}
			else if (config.showGrid())
			{
				graphics.setColor(GRID);
				graphics.fill(bounds);
			}
		}

		return null;
	}
}

@@ -3254,16 +3254,255 @@
 getY());
+%0A%09%09final int if1DraggedItemIndex = client.getIf1DraggedItemIndex();%0A%09%09final WidgetItem draggedItem = inventoryWidget.getWidgetItem(if1DraggedItemIndex);%0A%09%09final int itemId = draggedItem.getId();%0A%0A%09%09if (itemId == -1)%0A%09%09%7B%0A%09%09%09return null;%0A%09%09%7D
 %0A%0A%09%09for 
@@ -3761,107 +3761,8 @@
 %09%09%7B%0A
-%09%09%09%09final WidgetItem draggedItem = inventoryWidget.getWidgetItem(client.getIf1DraggedItemIndex());%0A
 %09%09%09%09
@@ -3821,35 +3821,22 @@
 etImage(
-draggedItem.getId()
+itemId
 );%0A%09%09%09%09f

Disable inventory grid if the dragged item is removed