Bagaimana Mendapatkan Plymouth Untuk Menampilkan Pesan-Pesan Booting Saat Booting?

20

Saya ingin tahu cara membuat splash untuk Ubuntu Maverick dengan pesan boot yang ditampilkan ketika saya boot serta bilah progres dan logo pemintalan.

Atau, jika mungkin, cara mengedit splash yang sudah memiliki logo pemintalan dan bilah progres, dan menambahkan pesan boot ke dalamnya.

Ini adalah tema yang ingin saya edit:

dan saya ingin sesuatu seperti ini:

masukkan deskripsi gambar di sini

atau ini, yang merupakan percikan tepat yang ingin saya buat:

masukkan deskripsi gambar di sini


Saya dapat menemukan situs web ini memiliki banyak informasi yang berguna tetapi saya kesulitan memahami sebagian darinya. belum pernah melakukan scripting sebelumnya!

Buat layar splash Anda sendiri dengan menggulir pesan-pesan boot

Plymouth Scripting

dan ini adalah situs web lain yang dapat membantu dengan scripting

ini skrip untuk bilah progres di splash:

    #----------------------------------------- Progress Bar --------------------------------

    progress_box.image = Image("progress_box.png");
    progress_box.sprite = Sprite(progress_box.image);

    progress_box.x = Window.GetX() + Window.GetWidth() / 2 - progress_box.image.GetWidth() / 2;
    progress_box.y = Window.GetY() + Window.GetHeight() * 0.65 - progress_box.image.GetHeight() / 2;
    progress_box.sprite.SetPosition(progress_box.x, progress_box.y, 0);

    progress_bar.original_image = Image("progress_bar.png");
    progress_bar.sprite = Sprite();

    progress_bar.x = Window.GetX() + Window.GetWidth()  / 2 -        progress_bar.original_image.GetWidth() / 2;
    progress_bar.y = Window.GetY() + Window.GetHeight() * 0.65  - progress_box.image.GetHeight() / 2 + (progress_box.image.GetHeight() - progress_bar.original_image.GetHeight()) / 2;
    progress_bar.sprite.SetPosition(progress_bar.x, progress_bar.y, 1);

    fun progress_callback (duration, progress)
      {
        if (progress_bar.image.GetWidth () != Math.Int (progress_bar.original_image.GetWidth () * progress))
          {
# add the * 3 to multiply the speed of the progress bar by 3
            progress_bar.image = progress_bar.original_image.Scale(progress_bar.original_image.GetWidth(progress_bar.original_image) * progress * 3, progress_bar.original_image.GetHeight());
            progress_bar.sprite.SetImage (progress_bar.image);
          }
      }

    Plymouth.SetBootProgressFunction(progress_callback);

OK jadi saya melakukan pencarian lebih banyak dan saya bisa belajar lebih banyak tentang Plymouth.

ini adalah situs yang menurut saya berguna. Panduan bertema Plymouth Ada empat bagian dari artikel yang harus Anda baca untuk mendapatkan intisari dari apa yang kami lakukan. (Saya membandingkan skrip mereka dengan skrip untuk splash saya untuk memahami apa itu, saya sarankan melakukan itu jika ada yang mengikuti jejak saya.) Skrip Plymouth Ok link ini memiliki 2 halaman harus melalui mereka untuk memahami apa yang harus dilakukan . Ternyata mereka mengejar hal yang sama saya, yaitu untuk mengarahkan pesan boot ke percikan Plymouth di mana saya sudah memiliki logo berputar, latar belakang, progress bar.

Jadi saya harus mengedit /lib/lsb/init-functionsfile saya dan membuatnya sehingga akan mengirim boot error / sukses, dll pesan ke Plymouth dengan menambahkan paragraf ini

# SEND MESSAGES TO PLYMOUTH
if [ -x /bin/plymouth ] && pidof plymouthd >/dev/null
then
    plymouth_send() {
        [ "$1" = '-n' ] && { # add a flag '>' for lines that will be extended
            shift
            /bin/plymouth message --text=">$*" || true
            return
        }
        [ "$1" = '-w' ] && { # add "warning" formatting
            shift
            /bin/plymouth update --status="warning" || true
            /bin/plymouth message --text="$*" || true
            /bin/plymouth update --status="normal" || true
            return
        }
        [ "$1" = '-f' ] && { # add "failed" formatting
            shift
            /bin/plymouth update --status="failed" || true
            /bin/plymouth message --text="$*" || true
            /bin/plymouth update --status="normal" || true
            return
        }
        /bin/plymouth message --text="$*" || true
    }
else
    plymouth_send() { :; }
fi

# int log_begin_message (char *message)
log_begin_msg () {
    if [ -z "${1:-}" ]; then
        return 1
    fi
    echo -n "$@"
}

Serta menambahkan

   # Only do the fancy stuff if we have an appropriate terminal
    # and if /usr is already mounted
    if log_use_fancy_output; then
        RED=`$TPUT setaf 1`
        YELLOW=`$TPUT setaf 3`
        NORMAL=`$TPUT op`
    else
        RED=''
        YELLOW=''
        NORMAL=''
    fi

    if [ $1 -eq 0 ]; then
        echo "."
        plymouth_send "."
    elif [ $1 -eq 255 ]; then
        /bin/echo -e " ${YELLOW}(warning).${NORMAL}"
        plymouth_send -w " (warning)."
    else
        /bin/echo -e " ${RED}failed!${NORMAL}"
        plymouth_send -f " failed!"
    fi
    log_end_msg_post "$@"
    return $retval
}

log_action_msg () {
    echo "$@."
    plymouth_send "$@."
}

log_action_begin_msg () {
    echo -n "$@..."
    plymouth_send -n "$@..."
}

log_action_cont_msg () {
    echo -n "$@..."
    plymouth_send -n "$@..."
}

log_action_end_msg () {
    log_action_end_msg_pre "$@"
    if [ -z "${2:-}" ]; then
        end="."
    else
        end=" ($2)."
    fi

    if [ $1 -eq 0 ]; then
        echo "done${end}"
        plymouth_send "done${end}"
    else
        if log_use_fancy_output; then
            RED=`$TPUT setaf 1`
            NORMAL=`$TPUT op`
            /bin/echo -e "${RED}failed${end}${NORMAL}"
        else
            echo "failed${end}"
            plymouth_send -f "failed${end}"
        fi
    fi
    log_action_end_msg_post "$@"
}

Sejauh ini saya tidak bisa menyampaikan pesan ke Plymouth, tetapi saya mendapatkan pemahaman yang lebih baik tentang cara kerja skrip Plymouth!

Saya tidak tahu apa lagi yang harus saya lakukan untuk membuatnya bekerja! berharap seseorang di sini bisa membantuku

Ohh dan ini skrip versi saya untuk Splash yang sedang saya kerjakan.

# INT2MIL-Ubuntu-10.10-Eng splashy like theme

Window.GetMaxWidth = fun (){
  i = 0;
  width = 0;
  while (Window.GetWidth(i)){
    width = Math.Max(width, Window.GetWidth(i));
    i++;
    }
  return width;
};

Window.GetMaxHeight = fun (){
  i = 0;
  height = 0;
  while (Window.GetHeight(i)){
    height = Math.Max(height, Window.GetHeight(i));
    i++;
    }
  return height;
};

anim.imagecount = 100;
anim.target_width =  0.2* 0.46 * Window.GetWidth();
anim.target_height =  0.2* 0.46 * Window.GetWidth();

fun RotatedImage (index){
    index = Math.Int(index);
    if (!RotatedImageCache[index])
        RotatedImageCache[index] = anim.original_image.Rotate((Math.Pi*2*index)/anim.imagecount).Scale(anim.target_width, anim.target_height);

    return RotatedImageCache[index];
    }


if (Plymouth.GetMode() == "suspend" || Plymouth.GetMode() == "resume") {
  background.original_image = ImageNew("suspend.png");
  Window.SetBackgroundTopColor(1, 0, 0);
  Window.SetBackgroundBottomColor(0, 1, 0);
}
else {
  logo.original_image = ImageNew("logo.png");
  background.original_image = ImageNew("background.png");
  Window.SetBackgroundTopColor(0.234, 0.43, 0.705);
  Window.SetBackgroundBottomColor(0.16, 0.25, 0.44);

  anim.image= ImageNew("animation.png");
  anim.original_image= anim.image.Scale(anim.target_width, anim.target_width);

  anim.sprite = SpriteNew();
  anim.sprite.SetImage(RotatedImage (0));
  anim.sprite.SetX((Window.GetX() + Window.GetWidth() - RotatedImage(0).GetWidth()) / 2);
  anim.sprite.SetY(Window.GetY() + Window.GetHeight() * 0.37);
  anim.angle = 0;
  anim.index = 0;


}
#change reduction size to make logo bigger
ratio =  logo.original_image.GetWidth() / logo.original_image.GetHeight();
reduction = 0.4;
logo.image = logo.original_image.Scale(reduction * Window.GetMaxWidth() , reduction / ratio *  Window.GetMaxWidth());
logo.sprite = SpriteNew();
logo.sprite.SetImage(logo.image);
logo.opacity_angle = 0;
#change logo location
logo.sprite.SetX((Window.GetX() + Window.GetMaxWidth()  - logo.image.GetWidth())  / 2);
logo.sprite.SetY(Window.GetY() + Window.GetHeight() * 0.37);
#background image attributs x,z,y
background.image = background.original_image.Scale(Window.GetMaxWidth() , Window.GetMaxHeight());
background.sprite = SpriteNew();
background.sprite.SetImage(background.image);
background.sprite.SetPosition(Window.GetX(), Window.GetY(), -10);

sprite_prompt = SpriteNew();

fun refresh_callback ()
  {
    if (status == "normal")
      {
#anim.index=speed of rotation
    anim.index += 1;
    anim.index %= anim.imagecount;
    anim.sprite.SetImage(RotatedImage (anim.index));
        #anim.sprite.SetOpacity (1);
    motif.sprite.SetOpacity(motif.opacity);
      }
    else
      {
        anim.sprite.SetOpacity(0);
    motif.sprite.SetOpacity(0);
      }

  }

if (Plymouth.GetMode() != "suspend" && Plymouth.GetMode() != "resume") {
  Plymouth.SetRefreshFunction (refresh_callback);
}

#----------------------------------------- Dialog --------------------------------

status = "normal";

fun dialog_setup()
  {
    local.box;
    local.lock;
    local.entry;
    local.prompt_sprite;

    box.image = ImageNew("box.png");
    lock.image = ImageNew("lock.png");
    entry.image = ImageNew("entry.png");

    box.sprite = SpriteNew();
    box.sprite.SetImage(box.image);
    box.x = Window.GetX() + Window.GetWidth()  / 2 - box.image.GetWidth()/2;
    box.y = Window.GetY() + Window.GetHeight() / 2 - box.image.GetHeight()/2;
    box.z = 10000;
    box.sprite.SetPosition(box.x, box.y, box.z);

    lock.sprite = SpriteNew();
    lock.sprite.SetImage(lock.image);
    lock.x = box.x + box.image.GetWidth()/2 - (lock.image.GetWidth() + entry.image.GetWidth()) / 2;
    lock.y = box.y + box.image.GetHeight()/2 - lock.image.GetHeight()/2;
    lock.z = box.z + 1;
    lock.sprite.SetPosition(lock.x, lock.y, lock.z);

    entry.sprite = SpriteNew();
    entry.sprite.SetImage(entry.image);
    entry.x = lock.x + lock.image.GetWidth();
    entry.y = box.y + box.image.GetHeight()/2 - entry.image.GetHeight()/2;
    entry.z = box.z + 1;
    entry.sprite.SetPosition(entry.x, entry.y, entry.z);

    prompt_sprite = SpriteNew();
    prompt_sprite.SetPosition(box.x, box.y - 20, box.z);

    global.dialog.box = box;
    global.dialog.lock = lock;
    global.dialog.entry = entry;
    global.dialog.bullet_image = ImageNew("bullet.png");
    global.dialog.prompt_sprite = prompt_sprite;
    dialog_opacity (1);
  }

fun dialog_opacity(opacity)
  {
    dialog.box.sprite.SetOpacity(opacity);
    dialog.lock.sprite.SetOpacity(opacity);
    dialog.entry.sprite.SetOpacity(opacity);
    dialog.prompt_sprite.SetOpacity(opacity);
    for (index = 0; dialog.bullet[index]; index++)
      {
        dialog.bullet[index].sprite.SetOpacity(opacity);
      }
  }

fun display_normal_callback ()
  {
    global.status = "normal";
    if (global.dialog)
      dialog_opacity (0);
  }

fun display_password_callback (prompt, bullets)
  {
    global.status = "password";
    if (!global.dialog) 
    dialog_setup();
    else 
    dialog_opacity(1);
    motif.sprite.SetOpacity(0);
    anim.sprite.SetOpacity(0);

    dialog.prompt_sprite.SetImage(Image.Text(prompt, 1.0, 1.0, 1.0));
    for (index = 0; dialog.bullet[index] || index < bullets; index++)
      { 

        if (!dialog.bullet[index])
          {
            dialog.bullet[index].sprite = SpriteNew();
            dialog.bullet[index].sprite.SetImage(dialog.bullet_image);
            dialog.bullet[index].x = dialog.entry.x + index * dialog.bullet_image.GetWidth();
            dialog.bullet[index].y = dialog.entry.y + dialog.entry.image.GetHeight() / 2 - dialog.bullet_image.GetHeight() / 2;
            dialog.bullet[index].z = dialog.entry.z + 1;
            dialog.bullet[index].sprite.SetPosition(dialog.bullet[index].x, dialog.bullet[index].y, dialog.bullet[index].z);
          }
        if (index < bullets)
          dialog.bullet[index].sprite.SetOpacity(1);
        else
          dialog.bullet[index].sprite.SetOpacity(0);
      }
  }

fun display_message_callback (prompt)
  {

prompt = Image.Text(prompt,1.0, 1.0, 1.0);
sprite_prompt.SetImage(prompt);
sprite_prompt.SetPosition(Window.GetX() + (Window.GetWidth() - prompt.GetWidth()) / 2, Window.GetY() + Window.GetHeight() * 0.93, 2);
  }

/* instantiate dialog at startup, to ensure all icons are loaded in memory before initrd is unmounted, in case /usr isn't mounted yet */
dialog_setup(); dialog_opacity(0);
Plymouth.SetDisplayNormalFunction(display_normal_callback);
Plymouth.SetDisplayPasswordFunction(display_password_callback);
Plymouth.SetMessageFunction(display_message_callback);

#----------------------------------------- Progress Bar --------------------------------

progress_box.image = Image("progress_box.png");
progress_box.sprite = Sprite(progress_box.image);

progress_box.x = Window.GetX() + Window.GetWidth() / 2 - progress_box.image.GetWidth() / 2;
progress_box.y = Window.GetY() + Window.GetHeight() * 0.65 - progress_box.image.GetHeight() / 2;
progress_box.sprite.SetPosition(progress_box.x, progress_box.y, 0);

progress_bar.original_image = Image("progress_bar.png");
progress_bar.sprite = Sprite();

progress_bar.x = Window.GetX() + Window.GetWidth()  / 2 -        progress_bar.original_image.GetWidth() / 2;
progress_bar.y = Window.GetY() + Window.GetHeight() * 0.65  - progress_box.image.GetHeight() / 2 + (progress_box.image.GetHeight() - progress_bar.original_image.GetHeight()) / 2;
progress_bar.sprite.SetPosition(progress_bar.x, progress_bar.y, 1);

fun progress_callback (duration, progress)
  {
    if (progress_bar.image.GetWidth () != Math.Int (progress_bar.original_image.GetWidth () * progress))
      {
        progress_bar.image = progress_bar.original_image.Scale(progress_bar.original_image.GetWidth(progress_bar.original_image) * progress * 3, progress_bar.original_image.GetHeight());
        progress_bar.sprite.SetImage (progress_bar.image);
      }
  }

Plymouth.SetBootProgressFunction(progress_callback);

#----------------------------------------- Status Update --------------------------------

NUM_SCROLL_LINES = 5;
LINE_WIDTH = 55;
# width of one character
CHAR_WIDTH = 7;
# height of one character
CHAR_HEIGHT = 10;

msg_color = [0.5,0.5,0.5]; # msg_color is array

fun update_status_callback(sta) {
  if (sta == "failed") msg_color = [1,0,0];
  if (sta == "warning") msg_color = [0.8,0.8,0];
  if (sta == "normal") msg_color = [0.5,0.5,0.5];
}

fun StringLength(string) {
  index = 0;
  str = String(string);
  while(str.CharAt(index)) index++;
  return index;
}

// Initialising text images and their positions
// 20 is the height (including line spacing) of each line
for (i=0; i < NUM_SCROLL_LINES; i++) {
  lines[i]= Image.Text("",0,0,0);
  message_sprite[i] = Sprite();
  message_sprite[i].SetX (Window.GetX() + (screen_width / 2 ) - (LINE_WIDTH * CHAR_WIDTH / 2));
  message_sprite[i].SetY (Window.GetY() + (screen_height / 2) + (logo_height /2) +(logo_height * 1.2)+ (i * CHAR_HEIGHT * 2) );
  message_sprite[i].SetZ (10000);
}

pretext = String("");

fun scroll_message_callback(text) {

 nobreak = 0;
   if (text.CharAt(0) == ">") {    # "no linebreak" flag, like "-n"
       text = text.SubString(1, StringLength(text)); # remove ">" at front
       nobreak = 1;
   }

   if (pretext == "") {

       if (nobreak == 1) pretext = text;

   // Truncate the message if too long
   if (StringLength(text) > LINE_WIDTH) {
     text = text.SubString(0, LINE_WIDTH - 3);
     text += "...";
   }

   // Shift messages one up
   for (i = 0; i < NUM_SCROLL_LINES - 1; i++) {
     lines[i] = lines[i+1];
   }
 else {    # the previous message was flagged to have no linebreak

          // Truncate the message if too long
       if (StringLength(text) > LINE_WIDTH - 5) { # leave min. 5 for pretext
         text = text.SubString(0, LINE_WIDTH - 8);
         text += "...";
       }

          # Truncate the previous message if too long
       if (StringLength(pretext) > (LINE_WIDTH - StringLength(text))) {
         pretext = pretext.SubString(0, LINE_WIDTH - StringLength(text) - 3);
         pretext += "...";
       }

       text = pretext + text;

       if (nobreak == 1) pretext = text;
       else pretext = "";

   }

   // Create the image for the latest message
#  original script had "lines[i]"   
   lines[i] = Image.Text( text, 0.5, 0.5, 0.5);

   // Re-allocate the text images to sprites
   for (i = 0; i < NUM_SCROLL_LINES; i++) {
     message_sprite[i].SetImage(lines[i]);
   }
}

Plymouth.SetUpdateStatusFunction(scroll_message_callback);

# messages get added to updates
Plymouth.SetMessageFunction(scroll_message_callback);

#----------------------------------------- Quit --------------------------------

fun quit_callback ()
{
 anim.sprite.SetOpacity (0);
  if (Plymouth.GetMode() == "shutdown") {
   motif.sprite.SetOpacity(0);
  }
}

Plymouth.SetQuitFunction(quit_callback);

OK jadi saya telah memberikan hampir semua info yang diperlukan, jika ada yang akrab dengan ini, beri tahu saya apa yang saya lewatkan untuk mengirimkan pesan boot ke Plymouth. Terima kasih

Vitaly
sumber
Jika ada yang ingin menguji splash tanpa memulai ulang ini adalah metode mudah 'Instal paket plymouth-x11 Jalankan sudo plymouthd; sudo plymouth --show-splash; tidur 10; sudo killall plymouthd ' askubuntu.com/questions/51078/…
Vitaly
1
Ohh dan hal lain yang harus saya ubah GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash" menjadi GRUB_CMDLINE_LINUX_DEFAULT = "splash" sehingga pesan dapat ditampilkan?
Vitaly
freedesktop.org/wiki/Software/Plymouth/Scripts halaman skrip plymouth lain. itu sangat membantu jika Anda tidak tahu javascript atau C.
Vitaly

Jawaban:

4

OK jadi saya sudah mengerjakan masalah ini selama 4 hari berturut-turut sekarang, dan saya hampir menyelesaikannya sepenuhnya. Sejauh ini saya bisa membuat Plymouth mem-boot dengan pesan yang ditampilkan, tetapi sayangnya pesan tersebut terpotong. Saat ini saya sedang mencoba untuk mengubah skrip tetapi saya tidak tahu di mana masalahnya di skrip / lib / lsb / init-functions atau /lib/plymouth/themes/"theme-name"/mdv.script.

Ini pekerjaan saya sejauh ini.

pertama-tama Anda harus membuat init-fungsi mengirim pesan ke Plymouth dengan membuatnya terlihat seperti ini (melalui setiap baris untuk melihat perbedaan dan menyalin garis yang sesuai dengan pengiriman Plymouth):

# /lib/lsb/init-functions for Debian -*- shell-script -*-
#
#Copyright (c) 2002-08 Chris Lawrence
#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.
#3. Neither the name of the author nor the names of other contributors
#   may be used to endorse or promote products derived from this software
#   without specific prior written permission.
#
#THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 REGENTS 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.

start_daemon () {
    local force nice pidfile exec i args
    force=0
    nice=0
    pidfile=/dev/null

    OPTIND=1
    while getopts fn:p: opt ; do
        case "$opt" in
            f)  force=1;;
            n)  nice="$OPTARG";;
            p)  pidfile="$OPTARG";;
        esac
    done

    shift $(($OPTIND - 1))
    if [ "$1" = '--' ]; then
        shift
    fi

    exec="$1"; shift

    args="--start --nicelevel $nice --quiet --oknodo"
    if [ $force = 1 ]; then
        /sbin/start-stop-daemon $args --chdir "$PWD" --startas $exec --pidfile /dev/null -- "$@"
    elif [ $pidfile ]; then
        /sbin/start-stop-daemon $args --chdir "$PWD" --exec $exec --oknodo --pidfile "$pidfile" -- "$@"
    else
        /sbin/start-stop-daemon $args --chdir "$PWD" --exec $exec -- "$@"
    fi
}

pidofproc () {
    local pidfile line i pids= status specified pid
    pidfile=
    specified=

    OPTIND=1
    while getopts p: opt ; do
        case "$opt" in
            p)  pidfile="$OPTARG"; specified=1;;
        esac
    done
    shift $(($OPTIND - 1))

    base=${1##*/}
    if [ ! "$specified" ]; then
        pidfile="/var/run/$base.pid"
    fi

    if [ -n "${pidfile:-}" -a -r "$pidfile" ]; then
        read pid < "$pidfile"
        if [ -n "${pid:-}" ]; then
            if $(kill -0 "${pid:-}" 2> /dev/null); then
                echo "$pid"
                return 0
            elif ps "${pid:-}" >/dev/null 2>&1; then
                echo "$pid"
                return 0 # program is running, but not owned by this user
            else
                return 1 # program is dead and /var/run pid file exists
            fi
        fi
    fi
    if [ -x /bin/pidof -a ! "$specified" ]; then
        status="0"
        /bin/pidof -o %PPID -x $1 || status="$?"
        if [ "$status" = 1 ]; then
            return 3 # program is not running
        fi
        return 0
    fi
    return 4 # Unable to determine status
}

# start-stop-daemon uses the same algorithm as "pidofproc" above.
killproc () {
    local pidfile sig status base i name_param is_term_sig
    pidfile=
    name_param=
    is_term_sig=no

    OPTIND=1
    while getopts p: opt ; do
        case "$opt" in
            p)  pidfile="$OPTARG";;
        esac
    done
    shift $(($OPTIND - 1))

    base=${1##*/}
    if [ ! $pidfile ]; then
        name_param="--name $base --pidfile /var/run/$base.pid"
    else
        name_param="--pidfile $pidfile"
    fi

    sig=$(echo ${2:-} | sed -e 's/^-\(.*\)/\1/')
    sig=$(echo $sig | sed -e 's/^SIG\(.*\)/\1/')
    if [ -z "$sig" -o "$sig" = 15 -o "$sig" = TERM ]; then
        is_term_sig=yes
    fi
    status=0
    if [ ! "$is_term_sig" = yes ]; then
        if [ -n "$sig" ]; then
            /sbin/start-stop-daemon --stop --signal "$sig" --quiet $name_param || status="$?"
        else
            /sbin/start-stop-daemon --stop --quiet $name_param || status="$?"
        fi
    else
        /sbin/start-stop-daemon --stop --quiet --oknodo $name_param || status="$?"
    fi
    if [ "$status" = 1 ]; then
        if [ -n "$sig" ]; then
            return 0
        fi
        return 3 # program is not running
    fi

    if [ "$status" = 0 -a "$is_term_sig" = yes -a "$pidfile" ]; then
        pidofproc -p "$pidfile" "$1" >/dev/null || rm -f "$pidfile"
    fi
    return 0
}

# Return LSB status
status_of_proc () {
    local pidfile daemon name status

    pidfile=
    OPTIND=1
    while getopts p: opt ; do
        case "$opt" in
            p)  pidfile="$OPTARG";;
        esac
    done
    shift $(($OPTIND - 1))

    if [ -n "$pidfile" ]; then
        pidfile="-p $pidfile"
    fi
    daemon="$1"
    name="$2"

    status="0"
    pidofproc $pidfile $daemon >/dev/null || status="$?"
    if [ "$status" = 0 ]; then
        log_success_msg "$name is running"
        return 0
    elif [ "$status" = 4 ]; then
        log_failure_msg "could not access PID file for $name"
        return $status
    else
        log_failure_msg "$name is not running"
        return $status
    fi
}

log_use_fancy_output () {
    TPUT=/usr/bin/tput
    EXPR=/usr/bin/expr
    if [ -t 1 ] && [ "x${TERM:-}" != "x" ] && [ "x${TERM:-}" != "xdumb" ] && [ -x $TPUT ] && [ -x $EXPR ] && $TPUT hpa 60 >/dev/null 2>&1 && $TPUT setaf 1 >/dev/null 2>&1; then
        [ -z $FANCYTTY ] && FANCYTTY=1 || true
    else
        FANCYTTY=0
    fi
    case "$FANCYTTY" in
        1|Y|yes|true)   true;;
        *)              false;;
    esac
}

log_success_msg () {
    if [ -n "${1:-}" ]; then
        log_begin_msg $@
    fi
    log_end_msg 0
}

log_failure_msg () {
    if [ -n "${1:-}" ]; then
        log_begin_msg $@ "..."
    fi
    log_end_msg 1 || true
}

log_warning_msg () {
    if [ -n "${1:-}" ]; then
        log_begin_msg $@ "..."
    fi
    log_end_msg 255 || true
}

#
# NON-LSB HELPER FUNCTIONS
#
# int get_lsb_header_val (char *scriptpathname, char *key)
get_lsb_header_val () {
        if [ ! -f "$1" ] || [ -z "${2:-}" ]; then
                return 1
        fi
        LSB_S="### BEGIN INIT INFO"
        LSB_E="### END INIT INFO"
        sed -n "/$LSB_S/,/$LSB_E/ s/# $2: \(.*\)/\1/p" $1
}

# SEND MESSAGES TO PLYMOUTH
if [ -x /bin/plymouth ] && pidof plymouthd >/dev/null
then
    plymouth_send() {
        [ "$1" = '-n' ] && { # add a flag '>' for lines that will be extended
            shift
            /bin/plymouth message --text=">$*" || true
            return
        }
        [ "$1" = '-w' ] && { # add "warning" formatting
            shift
            /bin/plymouth update --status="warning" || true
            /bin/plymouth message --text="$*" || true
            /bin/plymouth update --status="normal" || true
            return
        }
        [ "$1" = '-f' ] && { # add "failed" formatting
            shift
            /bin/plymouth update --status="failed" || true
            /bin/plymouth message --text="$*" || true
            /bin/plymouth update --status="normal" || true
            return
        }
        /bin/plymouth message --text="$*" || true
    }
else
    plymouth_send() { :; }
fi

# int log_begin_message (char *message)
log_begin_msg () {
    if [ -z "${1:-}" ]; then
        return 1
    fi
    echo -n "$@"
    plymouth_send -n "$@"
}

# Sample usage:
# log_daemon_msg "Starting GNOME Login Manager" "gdm"
#
# On Debian, would output "Starting GNOME Login Manager: gdm"
# On Ubuntu, would output " * Starting GNOME Login Manager..."
#
# If the second argument is omitted, logging suitable for use with
# log_progress_msg() is used:
#
# log_daemon_msg "Starting remote filesystem services"
#
# On Debian, would output "Starting remote filesystem services:"
# On Ubuntu, would output " * Starting remote filesystem services..."

log_daemon_msg () {
    if [ -z "${1:-}" ]; then
        return 1
    fi
    log_daemon_msg_pre "$@"

    if [ -z "${2:-}" ]; then
        echo -n "$1:"
        plymouth_send -n "$1:"
        return
    fi

    echo -n "$1: $2"
    plymouth_send -n "$1: $2"
    log_daemon_msg_post "$@"
}

# #319739
#
# Per policy docs:
#
#     log_daemon_msg "Starting remote file system services"
#     log_progress_msg "nfsd"; start-stop-daemon --start --quiet nfsd
#     log_progress_msg "mountd"; start-stop-daemon --start --quiet mountd
#     log_progress_msg "ugidd"; start-stop-daemon --start --quiet ugidd
#     log_end_msg 0
#
# You could also do something fancy with log_end_msg here based on the
# return values of start-stop-daemon; this is left as an exercise for
# the reader...
#
# On Ubuntu, one would expect log_progress_msg to be a no-op.
log_progress_msg () {
    if [ -z "${1:-}" ]; then
        return 1
    fi
    echo -n " $@"
    plymouth_send -n " $@"
}


# int log_end_message (int exitstatus)
log_end_msg () {
    # If no arguments were passed, return
    if [ -z "${1:-}" ]; then
        return 1
    fi

    retval=$1

    log_end_msg_pre "$@"

    # Only do the fancy stuff if we have an appropriate terminal
    # and if /usr is already mounted
    if log_use_fancy_output; then
        RED=`$TPUT setaf 1`
        YELLOW=`$TPUT setaf 3`
        NORMAL=`$TPUT op`
    else
        RED=''
        YELLOW=''
        NORMAL=''
    fi

    if [ $1 -eq 0 ]; then
        echo "."
        plymouth_send "."
    elif [ $1 -eq 255 ]; then
        /bin/echo -e " ${YELLOW}(warning).${NORMAL}"
        plymouth_send -w "warning"
    else
        /bin/echo -e " ${RED}failed!${NORMAL}"
        plymouth_send -f "failed"
    fi
    log_end_msg_post "$@"
    return $retval
}

log_action_msg () {
    echo "$@."
    plymouth_send "$@."
}

log_action_begin_msg () {
    echo -n "$@..."
    plymouth_send -n "$@..."
}

log_action_cont_msg () {
    echo -n "$@..."
    plymouth_send -n "$@..."
}

log_action_end_msg () {
    log_action_end_msg_pre "$@"
    if [ -z "${2:-}" ]; then
        end="."
    else
        end=" ($2)."
    fi

    if [ $1 -eq 0 ]; then
        echo "done${end}"
        plymouth_send "done${end}"
    else
        if log_use_fancy_output; then
            RED=`$TPUT setaf 1`
            NORMAL=`$TPUT op`
            /bin/echo -e "${RED}failed${end}${NORMAL}"
            plymouth_send -f "failed${end}"
        else
            echo "failed${end}"
            plymouth_send -f "failed${end}"
        fi
    fi
    log_action_end_msg_post "$@"
}

# Hooks for /etc/lsb-base-logging.sh
log_daemon_msg_pre () { :; }
log_daemon_msg_post () { :; }
log_end_msg_pre () { :; }
log_end_msg_post () { :; }
log_action_end_msg_pre () { :; }
log_action_end_msg_post () { :; }

FANCYTTY=
[ -e /etc/lsb-base-logging.sh ] && . /etc/lsb-base-logging.sh || true

Sekarang setelah Anda menambahkannya ke fungsi-init Anda harus mengedit tema Plymouth mdv.script Anda

Ini adalah versi terbaru dari skrip saya:

# INT2MIL-Ubuntu-10.10-Eng splashy like theme

Window.GetMaxWidth = fun (){
  i = 0;
  width = 0;
  while (Window.GetWidth(i)){
    width = Math.Max(width, Window.GetWidth(i));
    i++;
    }
  return width;
};

Window.GetMaxHeight = fun (){
  i = 0;
  height = 0;
  while (Window.GetHeight(i)){
    height = Math.Max(height, Window.GetHeight(i));
    i++;
    }
  return height;
};
#change animcount to increase/decrease speed of spinning arrows
anim.imagecount = 100;
anim.target_width =  0.2* 0.46 * Window.GetWidth();
anim.target_height =  0.2* 0.46 * Window.GetWidth();

fun RotatedImage (index){
    index = Math.Int(index);
    if (!RotatedImageCache[index])
        RotatedImageCache[index] = anim.original_image.Rotate((Math.Pi*2*index)/anim.imagecount).Scale(anim.target_width, anim.target_height);

    return RotatedImageCache[index];
    }


if (Plymouth.GetMode() == "suspend" || Plymouth.GetMode() == "resume") {
  background.original_image = ImageNew("suspend.png");
  Window.SetBackgroundTopColor(1, 0, 0);
  Window.SetBackgroundBottomColor(0, 1, 0);
}
else {
  logo.original_image = ImageNew("logo.png");
  background.original_image = ImageNew("background.png");
  Window.SetBackgroundTopColor(0.234, 0.43, 0.705);
  Window.SetBackgroundBottomColor(0.16, 0.25, 0.44);

  anim.image= ImageNew("animation.png");
  anim.original_image= anim.image.Scale(anim.target_width, anim.target_width);

  anim.sprite = SpriteNew();
  anim.sprite.SetImage(RotatedImage (0));
  anim.sprite.SetX((Window.GetX() + Window.GetWidth() - RotatedImage(0).GetWidth()) / 2);
  anim.sprite.SetY(Window.GetY() + Window.GetHeight() * 0.37);
  anim.angle = 0;
  anim.index = 0;


}
#change reduction size to make logo bigger
ratio =  logo.original_image.GetWidth() / logo.original_image.GetHeight();
reduction = 0.4;
logo.image = logo.original_image.Scale(reduction * Window.GetMaxWidth() , reduction / ratio *  Window.GetMaxWidth());
logo.sprite = SpriteNew();
logo.sprite.SetImage(logo.image);
logo.opacity_angle = 0;
#change logo location
logo.sprite.SetX((Window.GetX() + Window.GetMaxWidth()  - logo.image.GetWidth())  / 2);
logo.sprite.SetY(Window.GetY() + Window.GetHeight() * 0.37);
#background image attributs x,z,y
background.image = background.original_image.Scale(Window.GetMaxWidth() , Window.GetMaxHeight());
background.sprite = SpriteNew();
background.sprite.SetImage(background.image);
background.sprite.SetPosition(Window.GetX(), Window.GetY(), -100);

sprite_prompt = SpriteNew();

fun refresh_callback ()
  {
    if (status == "normal")
      {
#anim.index=speed of rotation
    anim.index += 1;
    anim.index %= anim.imagecount;
    anim.sprite.SetImage(RotatedImage (anim.index));
        #anim.sprite.SetOpacity (1);
    motif.sprite.SetOpacity(motif.opacity);
      }
    else
      {
        anim.sprite.SetOpacity(1);
    motif.sprite.SetOpacity(1);
      }

  }

if (Plymouth.GetMode() != "suspend" && Plymouth.GetMode() != "resume") {
  Plymouth.SetRefreshFunction (refresh_callback);
}

#----------------------------------------- Dialog --------------------------------

status = "normal";

fun dialog_setup()
  {
    local.box;
    local.lock;
    local.entry;
    local.prompt_sprite;

    box.image = ImageNew("box.png");
    lock.image = ImageNew("lock.png");
    entry.image = ImageNew("entry.png");

    box.sprite = SpriteNew();
    box.sprite.SetImage(box.image);
    box.x = Window.GetX() + Window.GetWidth()  / 2 - box.image.GetWidth()/2;
    box.y = Window.GetY() + Window.GetHeight() / 2 - box.image.GetHeight()/2;
    box.z = 10000;
    box.sprite.SetPosition(box.x, box.y, box.z);

    lock.sprite = SpriteNew();
    lock.sprite.SetImage(lock.image);
    lock.x = box.x + box.image.GetWidth()/2 - (lock.image.GetWidth() + entry.image.GetWidth()) / 2;
    lock.y = box.y + box.image.GetHeight()/2 - lock.image.GetHeight()/2;
    lock.z = box.z + 1;
    lock.sprite.SetPosition(lock.x, lock.y, lock.z);

    entry.sprite = SpriteNew();
    entry.sprite.SetImage(entry.image);
    entry.x = lock.x + lock.image.GetWidth();
    entry.y = box.y + box.image.GetHeight()/2 - entry.image.GetHeight()/2;
    entry.z = box.z + 1;
    entry.sprite.SetPosition(entry.x, entry.y, entry.z);

    prompt_sprite = SpriteNew();
    prompt_sprite.SetPosition(box.x, box.y - 20, box.z);

    global.dialog.box = box;
    global.dialog.lock = lock;
    global.dialog.entry = entry;
    global.dialog.bullet_image = ImageNew("bullet.png");
    global.dialog.prompt_sprite = prompt_sprite;
    dialog_opacity (1);
  }

fun dialog_opacity(opacity)
  {
    dialog.box.sprite.SetOpacity(opacity);
    dialog.lock.sprite.SetOpacity(opacity);
    dialog.entry.sprite.SetOpacity(opacity);
    dialog.prompt_sprite.SetOpacity(opacity);
    for (index = 0; dialog.bullet[index]; index++)
      {
        dialog.bullet[index].sprite.SetOpacity(opacity);
      }
  }

fun display_normal_callback ()
  {
    global.status = "normal";
    if (global.dialog)
      dialog_opacity (0);
  }

fun display_password_callback (prompt, bullets)
  {
    global.status = "password";
    if (!global.dialog) 
    dialog_setup();
    else 
    dialog_opacity(1);
    motif.sprite.SetOpacity(1);
    anim.sprite.SetOpacity(1);

    dialog.prompt_sprite.SetImage(Image.Text(prompt, 1.0, 1.0, 1.0));
    for (index = 0; dialog.bullet[index] || index < bullets; index++)
      { 

        if (!dialog.bullet[index])
          {
            dialog.bullet[index].sprite = SpriteNew();
            dialog.bullet[index].sprite.SetImage(dialog.bullet_image);
            dialog.bullet[index].x = dialog.entry.x + index * dialog.bullet_image.GetWidth();
            dialog.bullet[index].y = dialog.entry.y + dialog.entry.image.GetHeight() / 2 - dialog.bullet_image.GetHeight() / 2;
            dialog.bullet[index].z = dialog.entry.z + 1;
            dialog.bullet[index].sprite.SetPosition(dialog.bullet[index].x, dialog.bullet[index].y, dialog.bullet[index].z);
          }
        if (index < bullets)
          dialog.bullet[index].sprite.SetOpacity(1);
        else
          dialog.bullet[index].sprite.SetOpacity(0);
      }
  }

fun display_message_callback (prompt)
  {

prompt = Image.Text(prompt,1.0, 1.0, 1.0);
sprite_prompt.SetImage(prompt);
sprite_prompt.SetPosition(Window.GetX() + (Window.GetWidth() - prompt.GetWidth()) / 2, Window.GetY() + Window.GetHeight() * 0.93, 2);
  }

/* instantiate dialog at startup, to ensure all icons are loaded in memory before initrd is unmounted, in case /usr isn't mounted yet */
dialog_setup(); dialog_opacity(0);
Plymouth.SetDisplayNormalFunction(display_normal_callback);
Plymouth.SetDisplayPasswordFunction(display_password_callback);
Plymouth.SetMessageFunction(display_message_callback);

#----------------------------------------- Progress Bar --------------------------------

progress_box.image = Image("progress_box.png");
progress_box.sprite = Sprite(progress_box.image);

progress_box.x = Window.GetX() + Window.GetWidth() / 2 - progress_box.image.GetWidth() / 2;
progress_box.y = Window.GetY() + Window.GetHeight() * 0.65 - progress_box.image.GetHeight() / 2;
progress_box.sprite.SetPosition(progress_box.x, progress_box.y, 0);

progress_bar.original_image = Image("progress_bar.png");
progress_bar.sprite = Sprite();

progress_bar.x = Window.GetX() + Window.GetWidth()  / 2 -        progress_bar.original_image.GetWidth() / 2;
progress_bar.y = Window.GetY() + Window.GetHeight() * 0.65  - progress_box.image.GetHeight() / 2 + (progress_box.image.GetHeight() - progress_bar.original_image.GetHeight()) / 2;
progress_bar.sprite.SetPosition(progress_bar.x, progress_bar.y, 1);

fun progress_callback (duration, progress)
  {
    if (progress_bar.image.GetWidth () != Math.Int (progress_bar.original_image.GetWidth () * progress))
      {
# * 3 = multiply progress by 3
        progress_bar.image = progress_bar.original_image.Scale(progress_bar.original_image.GetWidth(progress_bar.original_image) * progress * 3, progress_bar.original_image.GetHeight());
        progress_bar.sprite.SetImage (progress_bar.image);
      }
  }

Plymouth.SetBootProgressFunction(progress_callback);

#----------------------------------------- Status Update --------------------------------

NUM_SCROLL_LINES=10;
LINE_WIDTH=55;

# width of one character doesnt work------------
CHAR_WIDTH = 7;
# height of one character
CHAR_HEIGHT = 10; 
#------------------------

msg_color = [1,1,1]; # msg_color is array

#status callback function

fun update_status_callback(sta) {
  if (sta == "failed") msg_color = [1,0,0];
  if (sta == "warning") msg_color = [0.8,0.8,0];
  if (sta == "normal") msg_color = [0.5,0.5,0.5];
}

screen_width = Window.GetWidth();
screen_height = Window.GetHeight();

#Initialising text images and their positions
# 20 is the height (including line spacing) of each line

for (i=0; i < NUM_SCROLL_LINES; i++) {
  lines[i]= Image.Text("", msg_color[0], msg_color[1], msg_color[2]);
  message_sprite[i] = Sprite();
  message_sprite[i].SetPosition(screen_width * 0.025, (screen_height * 0.6) + (i * 20), 10000);
}

fun StringLength(string) {

  index = 0;
  str = String(string);
  while(str.CharAt(index)) index++;
  return index;
}

pretext = String("");

#scroll message function

fun scroll_message_callback(text) {

 ##nobreak function 

  nobreak = 0;
   if (text.CharAt(0) == ">") {    # "no linebreak" flag, like "-n"
       text = text.SubString(1, StringLength(text)); # remove ">" at front
       nobreak = 1;
   }

   if ((pretext == "") || (StringLength(text) > 15))  {
   if (text == ".") return;    # ignore messages of only a single dot

       if (nobreak == 1) pretext = text;



#Truncate the message if too long


   if (StringLength(text) > LINE_WIDTH) {
     text = text.SubString(0, LINE_WIDTH - 0);
     text += "...";
   }




#Shift message one up

   for (i = 0; i < NUM_SCROLL_LINES - 1; i++) {
     lines[i] = lines[i+1];
   }


}
   else {    # the previous message was flagged to have no linebreak

          // Truncate the message if too long
       if (StringLength(text) > LINE_WIDTH - 5) { # leave min. 5 for pretext
         text = text.SubString(0, LINE_WIDTH - 8);
         text += "...";
       }

          # Truncate the previous message if too long
       if (StringLength(pretext) > (LINE_WIDTH - StringLength(text))) {
         pretext = pretext.SubString(0, LINE_WIDTH - StringLength(text) - 3);
         pretext += "...";
       }

       text = pretext + text;

       if (nobreak == 1) pretext = text;
       else pretext = ">";

   }


#Create the image for the latest message

     lines[i] = Image.Text(text, msg_color[0], msg_color[1], msg_color[2]);

#Re-positioning the text images

  for (i = 0; i < NUM_SCROLL_LINES; i++) {
     message_sprite[i].SetImage(lines[i]);
   }
}

 Plymouth.SetUpdateStatusFunction(update_status_callback);

 Plymouth.SetUpdateStatusFunction(scroll_message_callback);


#----------------------------------------- Quit --------------------------------

fun quit_callback ()
{
 anim.sprite.SetOpacity (1);
  if (Plymouth.GetMode() == "shutdown") {
   motif.sprite.SetOpacity(1);
  }
}

Plymouth.SetQuitFunction(quit_callback);

Pada dasarnya skrip dapat diterapkan ke tema apa saja, yang harus Anda lakukan adalah memberikan nama file gambar di folder. Dan mengubah beberapa garis lainnya untuk menyesuaikan gambar di layar. Atau apa yang Anda lakukan adalah menyalin bagian yang diperlukan seperti katakanlah Anda menginginkan bagian kemajuan sehingga yang harus Anda lakukan hanyalah menyalin semuanya dari

----------------------------------------- Progress Bar ------- -------------------------

sampai

----------------------------------------- Pembaruan Status ------- -------------------------

Setelah Anda selesai mengedit mdv.script pastikan untuk sudo update-initramfs -u dan pada boot berikutnya Anda akan melihat splash baru Anda.

Pastikan untuk memeriksa tautan yang disediakan dalam pertanyaan saya mereka sangat informatif dan akan membuat Anda memahami skrip plymouth dalam waktu singkat.

Sekarang jika Anda telah melakukan semua yang saya katakan di sini Anda boot splash akan menampilkan pesan gulir. Sekarang tentang bagian pemotongan, saya saat ini sedang mengerjakannya, tetapi agak menjengkelkan harus me-reboot mesin saya setiap kali saya melakukan beberapa perubahan. Apakah mungkin untuk menguji proses boot ketika sedang login seperti

sudo plymouthd ; sudo plymouth --show-splash ; sudo plymouth update --status="Hello" ; sleep 2 ; sudo plymouth update --status="This is a test. This is a test. This is a test. This is a test. This is a test. This is a test. " ; sleep 10 ; sudo killall plymouthd

Cara lain Anda dapat menguji Plymouth adalah dengan menyalin perintah di atas ke dalam file teks dan menambahkan sudo plymouth update --status="your message" untuk memiliki lebih banyak pesan. Kemudian buat file tersebut dapat dieksekusi dan dijalankan di terminal.

Semoga ini bisa membantu orang lain yang ingin mengedit splash Plymouth mereka. Semoga berhasil!!!

Vitaly
sumber
0

saya tahu ini adalah utas lama, tetapi saya pikir saya tahu jawaban tentang pemotongan teks atau tidak. Dalam skrip themename.script saya (bukan file themename.plymouth) saya menggunakan dua variabel.

1. NUM_SCROLL_LINES
2. LINE_WIDTH

dengan variabel-variabel ini saya dapat mengatur berapa banyak baris yang akan ditampilkan dan berapa lama baris yang akan ditampilkan. Script juga memiliki fungsi yang memotong garis jika ingin ditampilkan.

Saya harap ini akan bermanfaat bagi seseorang.

Masalah saya di opensuse 42.1 Leap is. plymouth tidak menampilkan pesan boot, seperti ditulis ke /var/log/boot.log. Ini menunjukkan panggilan systemd untuk layanan.

Saya juga mengedit / lib / lsb / init-functions dengan cara ini

if [ -x /usr/bin/plymouth ]; then
  /usr/bin/plymouth update --status="$@"
fi

atau itu

[ -x /usr/bin/plymouth ] && /usr/bin/plymouth update --status="$@"

Tidak ada yang berhasil untuk saya. Adakah yang punya ide?

Inilah ist theenameame.script yang saya gunakan

NUM_SCROLL_LINES=52;
LINE_WIDTH=120;

wallpaper_image = Image("background.png");
screen_width = Window.GetWidth();
screen_height = Window.GetHeight();
resized_wallpaper_image = wallpaper_image.Scale(screen_width,screen_height);
wallpaper_sprite = Sprite(resized_wallpaper_image);
wallpaper_sprite.SetZ(-100);

// Initialising text images and their positions
// 20 is the height (including line spacing) of each line
for (i=0; i < NUM_SCROLL_LINES; i++) {
  lines[i]= Image.Text("", 0, 0, 0);
  message_sprite[i] = Sprite();
#  here you can set the hights and width of textdisplay. 0.005 uses almost the whole screen.
#  message_sprite[i].SetPosition(screen_width * 0.2, (screen_height * 0.6) + (i * 20), 10000);
  message_sprite[i].SetPosition(screen_width * 0.005, (screen_height * 0.005) + (i * 20), 10000);
}

// From ubuntu-logo
fun StringLength(string) {
  index = 0;
  str = String(string);
  while(str.CharAt(index)) index++;
    return index;
}

fun scroll_message_callback(text) {
  // Truncate the message if too long
  if (StringLength(text) > LINE_WIDTH) {
    text = text.SubString(0, LINE_WIDTH - 3);
    text += "...";
  }

  // Shift message one up
  for (i = 0; i < NUM_SCROLL_LINES - 1; i++) {
    lines[i] = lines[i+1];
  }

  // Create the image for the latest message
  # z.B. turquoise coloured text / (text, 0.28, 0.82, 0.80); // 1.0 = 100% 0.28 = 28% usw.
  lines[i] = Image.Text(text, 0.28, 0.82, 0.80);

  // Re-positioning the text images
  for (i = 0; i < NUM_SCROLL_LINES; i++) {
    message_sprite[i].SetImage(lines[i]);
  }

}

Plymouth.SetUpdateStatusFunction(scroll_message_callback);
pengguna572252
sumber