[eureka]

Originally Posted by Aeris

What does Kindle Menu do?
- Provides a "slide to show" function, like Android: just slide your finger from the top bar to make Kindle Menu show (this features lasts "only" until you reboot the device or the framework)

I've made Upstart script to automatically enable magic swipe/slide after Pillow starts (at boot or on explicit restarting):

Spoiler:

start on started pillow

env DISABLE=false

script
  # Wait for pillow on 'started pillow' event.
  if [ "x${JOB}" == "xpillow" -a "x${UPSTART_EVENTS}" == "xstarted" ]; then
    lipc-wait-event com.lab126.pillow stateChange
    sleep 2
  fi

  # Reset DISABLE variable to false if it has a non-standard value.
  if [ "x${DISABLE}" != "xtrue" ]; then
    DISABLE=false
  fi

  # Id of Pillow container where magic swipe should be started.
  SWIPE_START_PILLOW_ID=search_bar

  # JavaScript executed in context of Pillow container.
  # It's glued into one big line (newlines are removed), so syntax
  # semicolons are required and any comments must be block comments (not line
  # comments).
  SCRIPT=`cat << 'JAVASCRIPT' | tr -d '\n' \
          | sed \
            -e 's,",\\\\",g' \
            -e "s/__JUST_DISABLE__/${DISABLE}/g"
  /* JavaScript code is started. */
  (function () {
    /* HTML element where magic swipe should be started. */
    const SWIPE_START_ELEMENT = document.getElementById("menu");
    /* Path to HTML file with custom dialog (without .html extension). */
    const DIALOG_PATH = "/mnt/us/custom_dialog/index";

    if (typeof window.__disableMagicSwipe__ === "function") {
      window.__disableMagicSwipe__();
    }
    if (__JUST_DISABLE__) {
      return;
    }

    if (SWIPE_START_ELEMENT === null) {
      nativeBridge.logInfo(
        "user-dialog",
        DIALOG_PATH,
        "Swipe start element is null");
      return;
    }

    window.__disableMagicSwipe__ = function () {
      SWIPE_START_ELEMENT.removeEventListener("mousedown", mouseDownHandler);
      SWIPE_START_ELEMENT.removeEventListener("mouseup", mouseUpHandler);
      document.body.removeEventListener("mouseout", mouseOutHandler);
      delete window.__disableMagicSwipe__;
    };

    var swiped = false;

    var mouseDownHandler = function () { swiped = true; };
    var mouseUpHandler   = function () { swiped = false; };
    var mouseOutHandler  = function () {
      if (swiped) {
        swiped = false;
        nativeBridge.setLipcProperty(
          "com.lab126.pillow",
          "customDialog",
          '{"name": "../../../..' + DIALOG_PATH + '"}'
        );
      }
    };

    SWIPE_START_ELEMENT.addEventListener("mousedown", mouseDownHandler);
    SWIPE_START_ELEMENT.addEventListener("mouseup", mouseUpHandler);
    document.body.addEventListener("mouseout", mouseOutHandler);
  })();
  /* JavaScript code is ended. */
  `

  MESSAGE='{
    "pillowId": "'${SWIPE_START_PILLOW_ID}'",
    "function": "'${SCRIPT}'"
  }'

  lipc-set-prop -s com.lab126.pillow interrogatePillow "$MESSAGE"
end script

It should be placed in /etc/upstart under any name with .conf extension (like /etc/upstart/magic_swipe.conf).

I think it's safe enough. Stock scripts aren't depending on this custom job, so any accidental error shouldn't break booting process.

It could be run manually. If script is named magic_swipe.conf, then to enable magic swipe execute

start magic_swipe

To disable it run, execute

start magic_swipe DISABLE=true

These commands are idempotent, they are always doing what you want and disabling before enabling or enabling twice in a row or something similar isn't an error.

Manual enabling of magic swipe is required after Pillow was disabled and then enabled again via setting of special LIPC property (like KOReader startup script does when stop_framework option isn't passed). Unfortunately, it looks like Pillow doesn't inform anybody about these state changes. I've just changed koreader.sh:

Spoiler:

Right after

lipc-set-prop com.lab126.pillow disableEnablePillow enable

add

start magic_swipe

To set:

• path to HTML file with custom dialog, change value in line with const DIALOG_PATH =
• Pillow component and its HTML element, where magic swipe should be started, change values in lines with SWIPE_START_PILLOW_ID= and const SWIPE_START_ELEMENT =

By default, script will instantiate /mnt/us/custom_dialog/index.html when swipe starting from Menu button in search bar will be performed.