#!/usr/bin/env bash

sudo apt install picom picom-conf

PICOM_HOME=${DEST}/.config/picom
mkdir -p ${PICOM_HOME}/

print_conf_picom() {
  cat <<-'EOF'
    #  ____  _                      
    # |  _ \(_) ___ ___  _ __ ___   
    # | |_) | |/ __/ _ \| '_ ` _ \  
    # |  __/| | (_| (_) | | | | | | 
    # |_|   |_|\___\___/|_| |_| |_| 
    #                               
    # by Stephan Raabe (2023) 
    # ----------------------------------------------------- 

    #################################
    #       General Settings        #
    #################################

    # Specify the backend to use: `xrender`, `glx`, or `xr_glx_hybrid`. `xrender` is the default one.
    backend = "glx"

    # Enable/disable VSync.
    vsync = true;

    # Try to detect WM windows (a non-override-redirect window with no
    # child that has 'WM_STATE') and mark them as active.
    mark-wmwin-focused = true;

    # Mark override-redirect windows that doesn't have a child window with 'WM_STATE' focused.
    mark-ovredir-focused = true;

    # Try to detect windows with rounded corners and don't consider them
    # shaped windows. The accuracy is not very high, unfortunately.
    detect-rounded-corners = true;

    # Detect '_NET_WM_WINDOW_OPACITY' on client windows, useful for window managers
    # not passing '_NET_WM_WINDOW_OPACITY' of client windows to frame windows.
    detect-client-opacity = true;

    # Use EWMH '_NET_ACTIVE_WINDOW' to determine currently focused window,
    # rather than listening to 'FocusIn'/'FocusOut' event. Might have more accuracy,
    # provided that the WM supports it.
    use-ewmh-active-win = false

    # Unredirect all windows if a full-screen opaque window is detected,
    # to maximize performance for full-screen windows. Known to cause flickering
    # when redirecting/unredirecting windows.
    unredir-if-possible = false

    # Delay before unredirecting the window, in milliseconds. Defaults to 0.
    unredir-if-possible-delay = 0

    # Conditions of windows that shouldn't be considered full-screen for unredirecting screen.
    unredir-if-possible-exclude = []

    # Use 'WM_TRANSIENT_FOR' to group windows, and consider windows
    # in the same group focused at the same time.
    detect-transient = true;

    # Use 'WM_CLIENT_LEADER' to group windows, and consider windows in the same
    # group focused at the same time. This usually means windows from the same application
    # will be considered focused or unfocused at the same time.
    # 'WM_TRANSIENT_FOR' has higher priority if detect-transient is enabled, too.
    detect-client-leader = false

    # Resize damaged region by a specific number of pixels.
    # A positive value enlarges it while a negative one shrinks it.
    # If the value is positive, those additional pixels will not be actually painted
    # to screen, only used in blur calculation, and such. (Due to technical limitations,
    # with use-damage, those pixels will still be incorrectly painted to screen.)
    # Primarily used to fix the line corruption issues of blur,
    # in which case you should use the blur radius value here
    # (e.g. with a 3x3 kernel, you should use `--resize-damage 1`,
    # with a 5x5 one you use `--resize-damage 2`, and so on).
    # May or may not work with *--glx-no-stencil*. Shrinking doesn't function correctly.
    #
    # resize-damage = 1

    # Specify a list of conditions of windows that should be painted with inverted color.
    # Resource-hogging, and is not well tested.
    #
    # invert-color-include = []

    # GLX backend: Avoid using stencil buffer, useful if you don't have a stencil buffer.
    # Might cause incorrect opacity when rendering transparent content (but never
    # practically happened) and may not work with blur-background.
    # My tests show a 15% performance boost. Recommended.
    #
    glx-no-stencil = true;

    # GLX backend: Avoid rebinding pixmap on window damage.
    # Probably could improve performance on rapid window content changes,
    # but is known to break things on some drivers (LLVMpipe, xf86-video-intel, etc.).
    # Recommended if it works.
    glx-no-rebind-pixmap = false

    # Disable the use of damage information.
    # This cause the whole screen to be redrawn everytime, instead of the part of the screen
    # has actually changed. Potentially degrades the performance, but might fix some artifacts.
    # The opposing option is use-damage
    #
    # no-use-damage = false
    use-damage = false;

    # Use X Sync fence to sync clients' draw calls, to make sure all draw
    # calls are finished before picom starts drawing. Needed on nvidia-drivers
    # with GLX backend for some users.
    xrender-sync-fence = false

    # GLX backend: Use specified GLSL fragment shader for rendering window contents.
    # See `compton-default-fshader-win.glsl` and `compton-fake-transparency-fshader-win.glsl`
    glx-fshader-win = ""

    # Force all windows to be painted with blending. Useful if you
    # have a glx-fshader-win that could turn opaque pixels transparent.
    force-win-blend = false

    # Do not use EWMH to detect fullscreen windows.
    # Reverts to checking if a window is fullscreen based only on its size and coordinates.
    no-ewmh-fullscreen = false

    # Dimming bright windows so their brightness doesn't exceed this set value.
    # Brightness of a window is estimated by averaging all pixels in the window,
    # so this could comes with a performance hit.
    # Setting this to 1.0 disables this behaviour. Requires --use-damage to be disabled. (default: 1.0)
    max-brightness = 1.0

    # Make transparent windows clip other windows like non-transparent windows do,
    # instead of blending on top of them.
    transparent-clipping = false

    log-level = "warn";

    # Window type settings
    #
    # 'WINDOW_TYPE' is one of the 15 window types defined in EWMH standard:
    #     "unknown", "desktop", "dock", "toolbar", "menu", "utility",
    #     "splash", "dialog", "normal", "dropdown_menu", "popup_menu",
    #     "tooltip", "notification", "combo", and "dnd".
    #
    # Following per window-type options are available: ::
    #
    #   fade, shadow:::
    #     Controls window-type-specific shadow and fade settings.
    #
    #   opacity:::
    #     Controls default opacity of the window type.
    #
    #   focus:::
    #     Controls whether the window of this type is to be always considered focused.
    #     (By default, all window types except "normal" and "dialog" has this on.)
    #
    #   full-shadow:::
    #     Controls whether shadow is drawn under the parts of the window that you
    #     normally won't be able to see. Useful when the window has parts of it
    #     transparent, and you want shadows in those areas.
    #
    #   clip-shadow-above:::
    #     Controls wether shadows that would have been drawn above the window should
    #     be clipped. Useful for dock windows that should have no shadow painted on top.
    #
    #   redir-ignore:::
    #     Controls whether this type of windows should cause screen to become
    #     redirected again after been unredirected. If you have unredir-if-possible
    #     set, and doesn't want certain window to cause unnecessary screen redirection,
    #     you can set this to `true`.
    #
    wintypes:
    {
      tooltip = { fade = true; shadow = false; opacity = 0.75; focus = true; full-shadow = false; };
      dock = { shadow = false; clip-shadow-above = true; }
      dnd = { shadow = false; }
      popup_menu = { opacity = 1.0; shadow = false; }
      dropdown_menu = { opacity = 0.8; shadow = false; }
    };


    #################################
    #             Shadows           #
    #################################

    # Enabled client-side shadows on windows. Note desktop windows 
    # (windows with '_NET_WM_WINDOW_TYPE_DESKTOP') never get shadow, 
    # unless explicitly requested using the wintypes option.
    #
    shadow = false;

    # The blur radius for shadows, in pixels. (defaults to 12)
    shadow-radius = 12;

    # The opacity of shadows. (0.0 - 1.0, defaults to 0.75)
    shadow-opacity = .75

    # The left offset for shadows, in pixels. (defaults to -15)
    shadow-offset-x = -15;

    # The top offset for shadows, in pixels. (defaults to -15)
    shadow-offset-y = -15;

    # Red color value of shadow (0.0 - 1.0, defaults to 0).
    shadow-red = 0

    # Green color value of shadow (0.0 - 1.0, defaults to 0).
    shadow-green = 0

    # Blue color value of shadow (0.0 - 1.0, defaults to 0).
    shadow-blue = 0

    # Specify a list of conditions of windows that should have no shadow.
    shadow-exclude = [
    ];

    # Specify a X geometry that describes the region in which shadow should not
    # be painted in, such as a dock window region. Use 
    #    shadow-exclude-reg = "x10+0+0"
    # for example, if the 10 pixels on the bottom of the screen should not have shadows painted on.
    shadow-exclude-reg = "" 

    # Crop shadow of a window fully on a particular Xinerama screen to the screen.
    xinerama-shadow-crop = false


    #################################
    #           Fading              #
    #################################

    # Fade windows in/out when opening/closing and when opacity changes,
    # unless no-fading-openclose is used.
    fading = true;

    # Opacity change between steps while fading in. (0.01 - 1.0, defaults to 0.028)
    fade-in-step = 0.04;

    # Opacity change between steps while fading out. (0.01 - 1.0, defaults to 0.03)
    fade-out-step = 0.04;


    #################################
    #   Transparency / Opacity      #
    #################################

    # Opacity of inactive windows. (0.1 - 1.0, defaults to 1.0)
    inactive-opacity = 0.95;

    # Opacity of window titlebars and borders. (0.1 - 1.0, disabled by default)
    frame-opacity = 0.9;

    # Let inactive opacity set by -i override the '_NET_WM_WINDOW_OPACITY' values of windows.
    inactive-opacity-override = false;

    # Default opacity for active windows. (0.0 - 1.0, defaults to 1.0)
    active-opacity = 1.0

    # Dim inactive windows. (0.0 - 1.0, defaults to 0.0)
    inactive-dim = 0.0

    # Specify a list of conditions of windows that should never be considered focused.
    focus-exclude = [];

    # Use fixed inactive dim value, instead of adjusting according to window opacity.
    inactive-dim-fixed = 1.0

    # Specify a list of opacity rules, in the format `PERCENT:PATTERN`,
    # like `50:name *= "Firefox"`. picom-trans is recommended over this.
    # Note we don't make any guarantee about possible conflicts with other
    # programs that set '_NET_WM_WINDOW_OPACITY' on frame or client windows.
    # example:
    #    opacity-rule = [ "80:class_g = 'URxvt'" ];
    #
    opacity-rule = [
        "90:class_g = 'Alacritty' && focused",
      "70:class_g = 'Alacritty' && !focused",
      "70:class_g = 'Rofi'"
    ]


    #################################
    #           Corners             #
    #################################

    # Sets the radius of rounded window corners. When > 0, the compositor will
    # round the corners of windows. Does not interact well with `transparent-clipping`.
    corner-radius = 15

    # Exclude conditions for rounded corners.
    rounded-corners-exclude = [
      "window_type = 'dock'",
      "window_type = 'desktop'",
      # "class_g = 'Dunst'",
      # "class_g = 'Rofi'",
      "QTILE_INTERNAL:32c = 1"
    ];


    #################################
    #     Background-Blurring       #
    #################################

    # Parameters for background blurring, see the *BLUR* section for more information.
    blur-method = "dual_kawase"
    blur-size = 12

    # blur-deviation = false

    blur-strength = 4

    # Blur background of semi-transparent / ARGB windows.
    # Bad in performance, with driver-dependent behavior.
    # The name of the switch may change without prior notifications.
    #
    # blur-background = false

    # Blur background of windows when the window frame is not opaque.
    # Implies:
    #    blur-background
    # Bad in performance, with driver-dependent behavior. The name may change.
    #
    # blur-background-frame = false


    # Use fixed blur strength rather than adjusting according to window opacity.
    # blur-background-fixed = false


    # Specify the blur convolution kernel, with the following format:
    # example:
    #   blur-kern = "5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
    #
    # blur-kern = ""
    # blur-kern = "3x3box";

    # # Exclude conditions for background blur.
    # # blur-background-exclude = []
    # blur-background-exclude = [
    #   "window_type = 'dock'",
    #   "window_type = 'desktop'",
    #   "_GTK_FRAME_EXTENTS@:c"
    # ];
EOF
}
conf_print_picom | tee ${PICOM_HOME}/picom.conf
