Add a mixin for storing stretched fixed mode setting states

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

@@ -25,6 +25,7 @@
 package net.runelite.api;
 
 import java.awt.Canvas;
+import java.awt.Dimension;
 import java.util.List;
 import java.util.Map;
 import net.runelite.api.widgets.Widget;
@@ -295,4 +296,16 @@ public interface Client extends GameEngine
 	void setCameraPitchRelaxerEnabled(boolean enabled);
 
 	RenderOverview getRenderOverview();
+
+	boolean isStretchedEnabled();
+
+	void setStretchedEnabled(boolean state);
+
+	boolean isStretchedFast();
+
+	void setStretchedFast(boolean state);
+
+	void setStretchedKeepAspectRatio(boolean state);
+
+	Dimension getStretchedDimensions();
 }

runelite-mixins/src/main/java/net/runelite/mixins/StretchedFixedModeMixin.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2018, Lotto <https://github.com/devLotto>
+ * 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.mixins;
+
+import java.awt.Canvas;
+import java.awt.Dimension;
+import net.runelite.api.Constants;
+import net.runelite.api.mixins.Inject;
+import net.runelite.api.mixins.Mixin;
+import net.runelite.rs.api.RSClient;
+
+@Mixin(RSClient.class)
+public abstract class StretchedFixedModeMixin implements RSClient
+{
+	@Inject
+	private static boolean stretchedEnabled;
+
+	@Inject
+	private static boolean stretchedFast;
+
+	@Inject
+	private static boolean stretchedKeepAspectRatio;
+
+	@Inject
+	@Override
+	public boolean isStretchedEnabled()
+	{
+		return stretchedEnabled;
+	}
+
+	@Inject
+	@Override
+	public void setStretchedEnabled(boolean state)
+	{
+		stretchedEnabled = state;
+	}
+
+	@Inject
+	@Override
+	public boolean isStretchedFast()
+	{
+		return stretchedFast;
+	}
+
+	@Inject
+	@Override
+	public void setStretchedFast(boolean state)
+	{
+		stretchedFast = state;
+	}
+
+	@Inject
+	@Override
+	public void setStretchedKeepAspectRatio(boolean state)
+	{
+		stretchedKeepAspectRatio = state;
+	}
+
+	@Inject
+	@Override
+	public Dimension getStretchedDimensions()
+	{
+		Canvas canvas = getCanvas();
+
+		int newWidth = canvas.getWidth();
+		int newHeight = canvas.getHeight();
+
+		if (stretchedKeepAspectRatio)
+		{
+			int tempNewWidth = (int) (newHeight * Constants.GAME_FIXED_ASPECT_RATIO);
+
+			if (tempNewWidth > canvas.getWidth())
+			{
+				newHeight = (int) (newWidth / Constants.GAME_FIXED_ASPECT_RATIO);
+			}
+			else
+			{
+				newWidth = tempNewWidth;
+			}
+		}
+
+		return new Dimension(newWidth, newHeight);
+	}
+}