api: remove getViewportWidget()

The returned widget isn't actually the viewport widget, but is a layer within the viewport, and only needs to be used within the overlay renderer to position the snapcorners

runelite-api/src/main/java/net/runelite/api/Client.java

@@ -879,16 +879,6 @@ public interface Client extends GameEngine
 	 */
 	IterableHashTable<MessageNode> getMessages();
 
-	/**
-	 * Gets the viewport widget.
-	 * <p>
-	 * The viewport is the area of the game above the chatbox
-	 * and to the left of the mini-map.
-	 *
-	 * @return the viewport widget
-	 */
-	Widget getViewportWidget();
-
 	/**
 	 * Gets the object composition corresponding to an objects ID.
 	 *

runelite-client/src/main/java/net/runelite/client/plugins/blastmine/BlastMineRockOverlay.java

@@ -42,7 +42,6 @@ import net.runelite.api.Point;
 import net.runelite.api.Tile;
 import net.runelite.api.coords.LocalPoint;
 import net.runelite.api.coords.WorldPoint;
-import net.runelite.api.widgets.Widget;
 import net.runelite.client.game.ItemManager;
 import net.runelite.client.ui.overlay.Overlay;
 import net.runelite.client.ui.overlay.OverlayLayer;
@@ -91,12 +90,10 @@ public class BlastMineRockOverlay extends Overlay
 		}
 
 		final Tile[][][] tiles = client.getScene().getTiles();
-		final Widget viewport = client.getViewportWidget();
 
 		for (final BlastMineRock rock : rocks.values())
 		{
-			if (viewport == null ||
-				rock.getGameObject().getCanvasLocation() == null ||
+			if (rock.getGameObject().getCanvasLocation() == null ||
 				rock.getGameObject().getWorldLocation().distanceTo(client.getLocalPlayer().getWorldLocation()) > MAX_DISTANCE)
 			{
 				continue;

runelite-client/src/main/java/net/runelite/client/plugins/grounditems/GroundItemsOverlay.java

@@ -111,7 +111,7 @@ public class GroundItemsOverlay extends Overlay
 		final FontMetrics fm = graphics.getFontMetrics();
 		final Player player = client.getLocalPlayer();
 
-		if (player == null || client.getViewportWidget() == null)
+		if (player == null)
 		{
 			return null;
 		}

runelite-client/src/main/java/net/runelite/client/plugins/tithefarm/TitheFarmPlantOverlay.java

@@ -34,7 +34,6 @@ import net.runelite.api.Client;
 import net.runelite.api.Perspective;
 import net.runelite.api.Point;
 import net.runelite.api.coords.LocalPoint;
-import net.runelite.api.widgets.Widget;
 import net.runelite.client.ui.overlay.Overlay;
 import net.runelite.client.ui.overlay.OverlayLayer;
 import net.runelite.client.ui.overlay.OverlayPosition;
@@ -85,8 +84,6 @@ public class TitheFarmPlantOverlay extends Overlay
 	@Override
 	public Dimension render(Graphics2D graphics)
 	{
-		final Widget viewport = client.getViewportWidget();
-
 		for (TitheFarmPlant plant : plugin.getPlants())
 		{
 			if (plant.getState() == TitheFarmPlantState.DEAD)
@@ -103,7 +100,7 @@ public class TitheFarmPlantOverlay extends Overlay
 
 			final Point canvasLocation = Perspective.localToCanvas(client, localLocation, client.getPlane());
 
-			if (viewport != null && canvasLocation != null)
+			if (canvasLocation != null)
 			{
 				final ProgressPieComponent progressPieComponent = new ProgressPieComponent();
 				progressPieComponent.setPosition(canvasLocation);

runelite-client/src/main/java/net/runelite/client/ui/overlay/OverlayRenderer.java

@@ -48,6 +48,7 @@ import net.runelite.api.Client;
 import net.runelite.api.GameState;
 import net.runelite.api.KeyCode;
 import net.runelite.api.MenuEntry;
+import net.runelite.api.Varbits;
 import net.runelite.api.events.BeforeRender;
 import net.runelite.api.events.ClientTick;
 import net.runelite.api.events.FocusChanged;
@@ -184,7 +185,7 @@ public class OverlayRenderer extends MouseAdapter implements KeyListener
 			|| overlays.isEmpty()
 			|| client.getGameState() != GameState.LOGGED_IN
 			|| client.getWidget(WidgetInfo.LOGIN_CLICK_TO_PLAY_SCREEN) != null
-			|| client.getViewportWidget() == null)
+			|| getViewportLayer() == null)
 		{
 			return;
 		}
@@ -795,11 +796,11 @@ public class OverlayRenderer extends MouseAdapter implements KeyListener
 			changed = true;
 		}
 
-		final boolean viewportChanged = !client.getViewportWidget().getBounds().equals(viewportBounds);
+		final boolean viewportChanged = !getViewportLayer().getBounds().equals(viewportBounds);
 
 		if (viewportChanged)
 		{
-			viewportBounds = client.getViewportWidget().getBounds();
+			viewportBounds = getViewportLayer().getBounds();
 			changed = true;
 		}
 
@@ -814,6 +815,22 @@ public class OverlayRenderer extends MouseAdapter implements KeyListener
 		return changed;
 	}
 
+	private Widget getViewportLayer()
+	{
+		if (client.isResized())
+		{
+			if (client.getVar(Varbits.SIDE_PANELS) == 1)
+			{
+				return client.getWidget(WidgetInfo.RESIZABLE_VIEWPORT_BOTTOM_LINE);
+			}
+			else
+			{
+				return client.getWidget(WidgetInfo.RESIZABLE_VIEWPORT_OLD_SCHOOL_BOX);
+			}
+		}
+		return client.getWidget(WidgetInfo.FIXED_VIEWPORT);
+	}
+
 	private OverlayBounds buildSnapCorners()
 	{
 		final Point topLeftPoint = new Point(