From d7b3887fe1e754aa0ec5970a175e439aa5c8fe86 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= <peterix@gmail.com>
Date: Fri, 14 Aug 2015 23:30:12 +0200
Subject: Revert "NOISSUE redo the launcher part"

This reverts commit c1f7dda8fe412263ccd82fbf3d56687bd291c73c.
---
 depends/launcher/org/multimc/IconLoader.java | 132 +++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 depends/launcher/org/multimc/IconLoader.java

(limited to 'depends/launcher/org/multimc/IconLoader.java')

diff --git a/depends/launcher/org/multimc/IconLoader.java b/depends/launcher/org/multimc/IconLoader.java
new file mode 100644
index 00000000..f1638f3a
--- /dev/null
+++ b/depends/launcher/org/multimc/IconLoader.java
@@ -0,0 +1,132 @@
+package org.multimc;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+/*****************************************************************************
+ * A convenience class for loading icons from images.
+ *
+ * Icons loaded from this class are formatted to fit within the required
+ * dimension (16x16, 32x32, or 128x128). If the source image is larger than the
+ * target dimension, it is shrunk down to the minimum size that will fit. If it
+ * is smaller, then it is only scaled up if the new scale can be a per-pixel
+ * linear scale (i.e., x2, x3, x4, etc). In both cases, the image's width/height
+ * ratio is kept the same as the source image.
+ *
+ * @author Chris Molini
+ *****************************************************************************/
+public class IconLoader
+{
+	/*************************************************************************
+	 * Loads an icon in ByteBuffer form.
+	 *
+	 * @param filepath
+	 *            The location of the Image to use as an icon.
+	 *
+	 * @return An array of ByteBuffers containing the pixel data for the icon in
+	 *         various sizes (as recommended by the OS).
+	 *************************************************************************/
+	public static ByteBuffer[] load(String filepath)
+	{
+		BufferedImage image;
+		try {
+			image = ImageIO.read ( new File( filepath ) );
+		} catch ( IOException e ) {
+			e.printStackTrace();
+			return new ByteBuffer[0];
+		}
+		ByteBuffer[] buffers;
+		buffers = new ByteBuffer[1];
+		buffers[0] = loadInstance(image, 128);
+		return buffers;
+	}
+
+	/*************************************************************************
+	 * Copies the supplied image into a square icon at the indicated size.
+	 *
+	 * @param image
+	 *            The image to place onto the icon.
+	 * @param dimension
+	 *            The desired size of the icon.
+	 *
+	 * @return A ByteBuffer of pixel data at the indicated size.
+	 *************************************************************************/
+	private static ByteBuffer loadInstance(BufferedImage image, int dimension)
+	{
+		BufferedImage scaledIcon = new BufferedImage(dimension, dimension,
+				BufferedImage.TYPE_INT_ARGB_PRE);
+		Graphics2D g = scaledIcon.createGraphics();
+		double ratio = getIconRatio(image, scaledIcon);
+		double width = image.getWidth() * ratio;
+		double height = image.getHeight() * ratio;
+		g.drawImage(image, (int) ((scaledIcon.getWidth() - width) / 2),
+				(int) ((scaledIcon.getHeight() - height) / 2), (int) (width),
+				(int) (height), null);
+		g.dispose();
+
+		return convertToByteBuffer(scaledIcon);
+	}
+
+	/*************************************************************************
+	 * Gets the width/height ratio of the icon. This is meant to simplify
+	 * scaling the icon to a new dimension.
+	 *
+	 * @param src
+	 *            The base image that will be placed onto the icon.
+	 * @param icon
+	 *            The icon that will have the image placed on it.
+	 *
+	 * @return The amount to scale the source image to fit it onto the icon
+	 *         appropriately.
+	 *************************************************************************/
+	private static double getIconRatio(BufferedImage src, BufferedImage icon)
+	{
+		double ratio = 1;
+		if (src.getWidth() > icon.getWidth())
+			ratio = (double) (icon.getWidth()) / src.getWidth();
+		else
+			ratio = (int) (icon.getWidth() / src.getWidth());
+		if (src.getHeight() > icon.getHeight())
+		{
+			double r2 = (double) (icon.getHeight()) / src.getHeight();
+			if (r2 < ratio)
+				ratio = r2;
+		}
+		else
+		{
+			double r2 = (int) (icon.getHeight() / src.getHeight());
+			if (r2 < ratio)
+				ratio = r2;
+		}
+		return ratio;
+	}
+
+	/*************************************************************************
+	 * Converts a BufferedImage into a ByteBuffer of pixel data.
+	 *
+	 * @param image
+	 *            The image to convert.
+	 *
+	 * @return A ByteBuffer that contains the pixel data of the supplied image.
+	 *************************************************************************/
+	public static ByteBuffer convertToByteBuffer(BufferedImage image)
+	{
+		byte[] buffer = new byte[image.getWidth() * image.getHeight() * 4];
+		int counter = 0;
+		for (int i = 0; i < image.getHeight(); i++)
+			for (int j = 0; j < image.getWidth(); j++)
+			{
+				int colorSpace = image.getRGB(j, i);
+				buffer[counter + 0] = (byte) ((colorSpace << 8) >> 24);
+				buffer[counter + 1] = (byte) ((colorSpace << 16) >> 24);
+				buffer[counter + 2] = (byte) ((colorSpace << 24) >> 24);
+				buffer[counter + 3] = (byte) (colorSpace >> 24);
+				counter += 4;
+			}
+		return ByteBuffer.wrap(buffer);
+	}
+}
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