Canvas

A bash script to generate and apply different types of gradient & blured wallpapers.

Features

• Generate a solid color wallpaper
• Generate a random blured wallpaper
• Generate linear, radial, bilinear(4 colored) & twisted gradient wallpapers
• Generate random, twisted or colored plasma wallpapers
• Allows you to pick colors or fetch colors from .Xresources file for wallpaper generation

Dependencies

• imagemagick
• feh
• xcolor
• xrandr (only if you use it on xfce)

Installation

• Clone this repository...

cd $HOME
git clone https://github.com/adi1090x/canvas.git
cd canvas
chmod +x canvas

# you can copy this script in bin dir for easy use
sudo cp canvas /usr/local/bin

• Run the program and choose an option

$ ./canvas -h

┏━╸┏━┓┏┓╻╻ ╻┏━┓┏━┓
┃  ┣━┫┃┗┫┃┏┛┣━┫┗━┓
┗━╸╹ ╹╹ ╹┗┛ ╹ ╹┗━┛
Canvas V3.0  : The Wallpaper Generator.
Developed By : Aditya Shakya (@adi1090x)

Usage : canvas [-h] [-S wxh] [-B] [-s] [-l] [-r] [-t] [-b] [-p] [-n] [-a] [-R]

Options:
   -h   --help		    Show this help message & exit
   -S   --size		    Size of the wallpaper (default is 1366x768)
   -B   --blurred	    Generate a random blurred wallpaper
   -s   --solid		    Generate a solid color wallpaper
   -l   --linear	    Generate a linear gradient wallpaper
   -r   --radial	    Generate a radial gradient wallpaper
   -t   --twisted	    Generate a twisted gradient wallpaper
   -b   --bilinear	  Generate a bilinear(4point) gradient wallpaper
   -p   --plasma	    Generate a plasma wallpaper
   -n   --no-preview	Do not show preview when image is generated 
   -a   --autobg	    Automatically set as wallpaper (implies -n)
   -R   --randomize	  Generate a random wallpaper

Usage

Though you can pick colors, Here's a list of all supported color names.

1. Generate random blured wallpaper...

$ canvas -B

Enter the blur strength (maximum 30): 12

Set as desktop background? (y/n): y

Blured 1	Blured 2

2. Generate a solid color wallpaper...

$ canvas -s

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): p

Pick a color... 
Generating wallpaper with color: #BA68C8

Set as desktop background? (y/n): y

$ canvas -s

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): e

Enter the color name or hex (eg: teal, #EBCB8B): #A3BE8C

Set as desktop background? (y/n): y

$ canvas -s

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): x
 
 ██████  ██████  ██████  ██████  ██████  ██████
 ██01██  ██02██  ██03██  ██04██  ██05██  ██06██
 ██████  ██████  ██████  ██████  ██████  ██████

 ██████  ██████  ██████  ██████  ██████  ██████
 ██07██  ██08██  ██09██  ██10██  ██11██  ██12██
 ██████  ██████  ██████  ██████  ██████  ██████	 

Enter the color number (without zero): 1

Generating wallpaper with color: #BF616A

Set as desktop background? (y/n): y

Solid - #BA68C8	Solid - #A3BE8C

3. Generate a linear gradient wallpaper...

$ canvas -l

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): p

Pick first color...
Pick second color...

Generating wallpaper with colors: #FB8784, #70D675

Enter the rotation angle (default is 0): 60 

Set as desktop background? (y/n): y

$ canvas -l

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): e

Enter the colors name or hex (format: color1-color2): orange-purple

Enter the rotation angle (default is 0): 90

Set as desktop background? (y/n): y

Linear Gradient 1	Linear Gradient 2

4. Generate a radial gradient wallpaper...

$ canvas -r

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): p

Pick first color...
Pick second color...

Generating wallpaper with colors: #DA0B86, #200D74

Shape? [ 1.diagonal | 2.ellipse | 3.maximum | 4.minimum ] (1/2/3/4): 3

Enter the rotation angle (default is 0): 0

Set as desktop background? (y/n): y

$ canvas -r

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): e

Enter the colors name or hex (format: color1-color2): red-black

Shape? [ 1.diagonal | 2.ellipse | 3.maximum | 4.minimum ] (1/2/3/4): 2

Enter the rotation angle (default is 0): 20

Set as desktop background? (y/n): y

Radial Gradient Max	Radial Gradient Ellipse

5. Generate a twisted gradient wallpaper...

$ canvas -t

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): p

Pick first color...
Pick second color...

Generating wallpaper with colors: #EC7875, #61C766

Enter the twisting amount (maximum 500): 200

Set as desktop background? (y/n): y

$ canvas -t

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): e

Enter the colors name or hex (format: color1-color2): blue-pink

Enter the twisting amount (maximum 500): 180

Set as desktop background? (y/n): y

Twisted Gradient 1	Twisted Gradient 2

6. Generate a bilinear gradient wallpaper...

$ canvas -b

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): p

Pick first color...
Pick second color...
Pick third color...
Pick fourth color...

Generating wallpaper with colors: #FB8784, #70D675, #FFE744 & #51B4FF

Smooth or Regular? (s/r): r

Set as desktop background? (y/n): y

$ canvas -b

Pick Colors or Enter Colors or fetch from .Xresources file? (p/e/x): e

Enter first color (eg: red, #EC7875): teal
Enter second color (eg: green, #61C766): pink
Enter third color (eg: yellow, #FDD835): purple
Enter fourth color (eg: blue, #42A5F5): khaki

Smooth or Regular? (s/r): s

Please wait...
Set as desktop background? (y/n): y

Bilinear 1	Bilinear 2

7. Generate a plasma wallpaper...

$ canvas -p

Random, Twisted or Custom colors? (r/t/c): r

Set as desktop background? (y/n): n

$ canvas -p

Random, Twisted or Custom colors? (r/t/c): t

Set as desktop background? (y/n): n

Plasma Normal	Plasma Twisted

Common Issues

1. Wallpaper not changing : If your wallpaper is not changing, then open an issue and show me the output of echo $DESKTOP_SESSION.

2. Not working on XFCE : If this script is not working on xfce, then open the terminal and run xfconf-query -c xfce4-desktop -m and change the wallpaper (any) via xfce4-settings-manager.
   In terminal, xfconf-query will print lines starting with set:, which show which properties have been changed, check screen & monitor values and modify the script accordingly.

105   ## For XFCE
106   if [[ "$OSTYPE" == "linux"* ]]; then
107       SCREEN="0"
108       MONITOR="1"
109   fi

FYI

• In KDE, it changes the wallpaper in all the Activities.
• If you can improve it, you're welcome.
• Have Fun!