Added options for easy customisation

install.sh → GReza

@@ -1,4 +1,5 @@
-#! /bin/bash
+#!/usr/bin/env bash
+
 set -e
 
 # This script installs the GRUB2 theme in /boot/grub/themes/, /boot/grub2/themes/ or /grub/themes/
@@ -76,14 +77,35 @@ mkConfig_File=$(which ${Grub_Dir##*/}-mkconfig) || \
 
 # Ask for desired resolution if set to "any"
 if [[ $Theme_Resolution = "any" ]]; then
-	echo ""
-	echo "Enter desired resolution in the form of 1024x768, 800x600, 1600x1200, etc."
-	echo "Also, only choose a resolution that is supported by your VESA BIOS Extensions"
-	echo "which can be found by installing the hwinfo package, and running hwinfo --framebuffer,"
-	echo "or by running vbeinfo at grub's command line. The outputs may vary."
-	echo ""
-	echo -n "Enter desired resolution: "
-	read Theme_Resolution
+	Theme_Resolution=$(xdpyinfo | awk '/dimensions/{print $2}')
+    width=$(echo $Theme_Resolution | awk -Fx '{print $1}')
+	height=$(echo $Theme_Resolution | awk -Fx '{print $2}')
+
+	# syntax to resize -- send width and height as arguments
+	# to edit the code, make changes in ImgResize.java
+
+	java -version
+	if [ $? -ne 0 ]
+	then
+	    echo "Java is not installed or not in the system path. Exiting now..."
+	    exit 1
+    fi
+
+	javac ImgResize.java
+	echo "Enter background image path (Ctrl+Shift+V to paste): "
+	read path
+	java ImgResize $width $height "$path"
+	echo
+	echo "Enter message text (Use @ for new line):  "
+	read text
+	echo "Enter text color in RGB (#000000 is black, #FFFFFF is white): "
+	read color
+	javac TextToGraphics.java
+	java TextToGraphics "$text" "$color"
+	if [ $? -ne 0 ]
+	then
+	    exit
+	fi
 fi
 
 # Create theme directory.  If directory already exists, ask the user if they would like
@@ -158,6 +180,20 @@ if [[ $Response = yes || $Response = y ]]; then
 		sed "s,^#\?GRUB_THEME=.*,GRUB_THEME=$Theme_Dir/$Theme_Definition_File," <$Grub_File >$Grub_File.~
 		mv $Grub_File.~ $Grub_File
 	fi	
-	$($mkConfig_File -o $Grub_Dir/grub.cfg)	# Generate new grub.cfg
+	$($mkConfig_File -o $Grub_Dir/grub.cfg) # Generate new grub.cfg
+
+	# to add icons to Advanced menu and System setup
+	chmod -R 644 /boot/grub/grub.cfg
+	sed -i -e "s/submenu \(.*\)\$menu/submenu \1 --class submenu \$menu/g" /boot/grub/grub.cfg
+    sed -i "s/menuentry 'System setup'/menuentry 'System setup' --class settings/g" /boot/grub/grub.cfg
+	echo
+	echo "New Grub Theme added. Changes will apply on reboot."
+	echo "Do you want to reboot now? Enter Yes to reboot."
+	read reboot_response
+	if [ "$reboot_response" = "Yes" ]
+	then
+	    reboot
+	fi
+
 fi
 exit 0

ImgResize.java

@@ -0,0 +1,45 @@
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.*;
+import java.awt.Image;
+import java.net.*;
+
+public class ImgResize {
+
+    public static void main(String args[]) {
+
+        int width = Integer.parseInt(args[0]);
+        int height = Integer.parseInt(args[1]);
+        String path = args[2];
+
+        BufferedImage newImage;
+        Image image;
+
+        try {
+            if (path.substring(0, 4).equals("http")) {
+                URL url = new URL(path);
+                image = ImageIO.read(url);
+            } else {
+                File file = new File(path);
+                image = ImageIO.read(file);
+            }
+            newImage = getScaledImage(image, width, height);
+            File outputfile = new File("background.png");
+            ImageIO.write(newImage, "png", outputfile);
+	        System.exit(0);
+        } catch (IOException e) {
+            System.out.println("Image could not be found / resized");
+	        System.exit(1);
+        }
+    }
+
+    private static BufferedImage getScaledImage(Image srcImg, int w, int h) {
+        BufferedImage resizedImg = new BufferedImage(w, h, Transparency.TRANSLUCENT);
+        Graphics2D g2 = resizedImg.createGraphics();
+        g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+        g2.drawImage(srcImg, 0, 0, w, h, null);
+        g2.dispose();
+        return resizedImg;
+    }
+}

README.md

@@ -1,9 +1,36 @@
 # GReza
-A GRUB theme.
+A GRUB theme customization App for Linux
 
-Find out the resolution grub supports:
-- `hwinfo --framebuffer`
-- At grub commandline (pressing `C` at grub menu): `vbeinfo`
+**Requirements:**
+Java
 
-To name an icon for display in the grub menu, you need to know the distro class name.
-`menuentry "Gentoo" --class **gentoo** --class os...`
+**To use this app, enter the following commands in your terminal:**
+```
+git clone https://github.com/AseedUsmani/GReza.git 
+cd GReza
+sudo ./GReza
+```
+
+**Tips on customization:**
+1) The script will ask for an image path, it can be an internet URL or a local path.
+2) The color of the custom message you enter is in RGB, where `#FFFFFF` is white and `#000000` is black. Enter a blank message (space) to remove the image.
+3) The bootloader images (background and selected) are determined by `select_bkg_*.png` and `select_bg_*.png`; where c stands for center, n, ne, s etc stands for North, North-East, South etc. Same rule applies to terminal background.
+4) You can edit theme.txt for further customization.
+5) To change the order or the names of the menu items in bootloader, edit `/boot/grub/grub.cfg`.
+6) In case an icon is missing, add `--class <icon_name>` to the line containing the menu item. For example:
+`submenu 'Advanced menu for Ubuntu' --class submenu`... will put the image file `submenu` as the icon of this item. To put your icons, copy the image file in `./GReza/icons` directory.
+
+**Files you can consider editing**
+1) ImgResize.java
+2) TextToGraphics.java
+3) GReza
+4) theme.txt
+5) `/boot/grub/grub.cfg`
+Please be cautious while editing `grub.cfg`.
+
+PS: You do not need to recompile `.java` files in order to see changes.
+
+# Preview
+![Preview](https://i.imgur.com/8LPgmMD.jpg)
+
+**Credits:** https://github.com/safiyat/GReza

TextToGraphics.java

@@ -0,0 +1,63 @@
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import javax.imageio.ImageIO;
+
+public class TextToGraphics {
+
+    public static void main(String[] args) {
+        String color = args[1];
+        String[] text = args[0].split("@", 0);
+	    int lines = text.length;
+        int red = Integer.parseInt(color.substring(1, 3), 16);
+        int green = Integer.parseInt(color.substring(3, 5), 16);
+        int blue = Integer.parseInt(color.substring(5, 7), 16);
+
+        /*
+           Because font metrics is based on a graphics context, we need to create
+           a small, temporary image so we can ascertain the width and height
+           of the final image
+         */
+        BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g2d = img.createGraphics();
+        Font font = new Font("Arial", Font.PLAIN, 48);
+        g2d.setFont(font);
+        FontMetrics fm = g2d.getFontMetrics();
+	    int width=fm.stringWidth("");
+        for (int i = 0; i < lines; i++) {
+		if(width<fm.stringWidth(text[i])) width=fm.stringWidth(text[i]); 
+	}
+        int height = fm.getHeight() * lines;
+        g2d.dispose();
+
+        img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        g2d = img.createGraphics();
+        g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
+        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+        g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
+        g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
+        g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
+        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+        g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+        g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
+        g2d.setFont(font);
+        fm = g2d.getFontMetrics();
+        g2d.setColor(new Color(red, green, blue));
+    	for (int i = 1; i<=lines; i++) {
+		    g2d.drawString(text[i-1], 0, fm.getAscent()*i);
+	    }
+        g2d.dispose();
+        try {
+            ImageIO.write(img, "png", new File("info.png"));
+        } catch (IOException ex) {
+            ex.printStackTrace();
+        }
+
+    }
+
+}

_config.yml

@@ -0,0 +1 @@
+theme: jekyll-theme-minimal

theme.txt

@@ -18,7 +18,7 @@ terminal-font: "Fixed Regular 13"
 
 # Show the boot menu
 + boot_menu {
-		left = 0
+		left = 10
 		width = 50%
 		top = 0
 		height = 100%
@@ -27,11 +27,11 @@ terminal-font: "Fixed Regular 13"
 		item_color = "#f5f5f5"
 		selected_item_color = "#333333"
 		item_height = 56
-		item_padding = 0
-		item_spacing = 20
-		icon_width = 48
-		icon_height = 48
-		item_icon_space = 20
+		item_padding = 100
+		item_spacing = 10
+		icon_width = 36
+		icon_height = 36
+		item_icon_space = 15
 		selected_item_pixmap_style= "select_bkg_*.png"
 		menu_pixmap_style = "menu_bkg_*.png"
 		scrollbar = false