Page side by side preview/ feature request

Alan Kilborn

@overstop

Best way to understand it is to try it:

right-click a Notepad++ tab for a file
choose Clone to other view in the resulting popup menu

overstop

Thank you. How can sync scrolling of the two views?

Alan Kilborn

@overstop

View menu > Synchronize Vertical Scrolling

overstop

Would it be possible to add feature:
Clone to other view sets right view first line as last line of the left view + 1 automatically ?

Alan Kilborn

@overstop said in Page side by side preview/ feature request:

Would it be possible to add feature:

Probably not reasonable as a feature addition.
Probably very doable as a script.

Alan Kilborn

Here’s a barebones PythonScript that shows how this could work:

notepad.menuCommand(MENUCOMMAND.VIEW_CLONE_TO_ANOTHER_VIEW)
editor2.setFirstVisibleLine(editor1.getFirstVisibleLine() + editor1.linesOnScreen())
notepad.menuCommand(MENUCOMMAND.VIEW_SYNSCROLLV)

Because Notepad++'s View menu’s Synchronize Vertical Scrolling choice is a toggle, however, the above only works if it is currently off. This is a problem with a few Notepad++ menu commands and scripts.

I wonder if @Ekopalypse has some ideas about some script code that can read the status of a checkable menu item? Ideally it would depend only upon command-id (e.g. 44035 in this case) and not the text of the menu item (to avoid problems with using N++ in a different localization).

Ekopalypse

@Alan-Kilborn

I ASSUME i can be done using GetMenuItemInfoW and MENUITEMINFOW. Will follow up later, probably tomorrow.

Ekopalypse

@Alan-Kilborn

A quick one, just tested with py3.
Now I need to shutdown before I get into trouble with my family boss. :-)

import os
import ctypes
from ctypes import wintypes

user32 = ctypes.WinDLL('user32')

MFS_ENABLED = 0x0
MFS_DISABLED = 0x3
MIIM_STATE = 1
MIIM_ID = 2
MIIM_SUBMENU = 4
MIIM_STRING = 64
MFT_STRING = 0
MFS_ENABLED = 0

MF_BYPOSITION = 0x00000400
MF_POPUP = 0x00000010

class MENUITEMINFO(ctypes.Structure):
    ''' Implements the winapi MENUITEMINFO structure'''
    _fields_ = [('cbSize', wintypes.UINT),
                ('fMask',  wintypes.UINT),
                ('fType',  wintypes.UINT),
                ('fState',  wintypes.UINT),
                ('wID',  wintypes.UINT),
                ('hSubMenu',  wintypes.HMENU),
                ('hbmpChecked',  wintypes.HBITMAP),
                ('hbmpUnchecked', wintypes.HBITMAP),
                ('dwItemData',  wintypes.LPVOID),
                ('dwTypeData',  wintypes.LPWSTR),
                ('cch',  wintypes.UINT),
                ('hbmpItem',  wintypes.HBITMAP),]

main_menu = notepad.getMenuHandle(1)
view_menu = user32.GetSubMenu(main_menu, 3)
menu_items = user32.GetMenuItemCount(view_menu)
print(menu_items)

for pos in range(menu_items):
    mii = MENUITEMINFO()
    mii.cbSize = ctypes.sizeof(mii)
    mii.fMask = MIIM_ID | MIIM_STATE
    # mii.fType = None
    mii.dwTypeData = None
    lpmii = ctypes.byref(mii)

    user32.GetMenuItemInfoW(view_menu, pos, True, lpmii)
    for field in mii._fields_:
        if mii.wID == 44035:
            print('State:', mii.fState)
            break

Alan Kilborn

@Ekopalypse said in Page side by side preview/ feature request:

A quick one, just tested with py3.

Nice – works fine!
Thank you.

Now I need to shutdown before I get into trouble with my family boss

Way worse than the Monday thru Friday boss, when you get their ire up!
Go man go!

Alan Kilborn

@Ekopalypse

I turned your script into the following recursive function that finds a specified id:

def menu_search_for_specified_id(menu_handle, id_to_find):  # returns ( direct-menu-handle, position-on-menu )
    menu_item_count = user32.GetMenuItemCount(menu_handle)
    for menu_pos in range(menu_item_count):
        sub_menu_handle = user32.GetSubMenu(menu_handle, menu_pos)
        if sub_menu_handle != 0:
            (h, p) = menu_search_for_specified_id(sub_menu_handle, id_to_find)
            if h != 0: return (h, p)
        else:
            mii = MENUITEMINFO()
            mii.cbSize = ctypes.sizeof(mii)
            mii.fMask = MIIM_ID
            mii.dwTypeData = None
            lpmii = ctypes.byref(mii)
            user32.GetMenuItemInfoW(menu_handle, menu_pos, True, lpmii)
            if mii.wID == id_to_find: return (menu_handle, menu_pos)
    return (0, 0)  # nothing found

I’ll keep going with a final solution for the OP’s request, that uses this…interested parties please check back later. :-)

Amit

You can Clone the text document to the other view. (Dual View).
Scroll down to about page length.
And then use Synchronized Vertical Scrolling feature to have Two-Page View in Notepad++.

This is not a fully automated feature but one that you can do it very easily.

This video shows how you can use Synchronized Vertical/horizontal scrolling feature in Notepad++. Hope it helps.

(disclaimer: I am the owner of this Notepad++ YouTube Channel).

Ekopalypse

@Amit - that is what @Alan-Kilborn suggested first, isn’t it?

Alan Kilborn

I found time sooner than I thought to integrate the menu-search function into the main code for this thread’s topic.

Here’s a replacement script; obviously, quite a bit more complicated.
But, due to the virtues of encapsulation, the run() function looks very much like the original, simpler script (the first script provided in this thread).

I call the script CloneActiveDocAndCreateDualPageView.py and here’s its code:

# -*- coding: utf-8 -*-

from Npp import editor, notepad, MENUCOMMAND
import ctypes
from ctypes import wintypes

user32 = ctypes.WinDLL('user32')

MIIM_STATE = 1
MIIM_ID = 2
MFS_DISABLED = 0x3
MFS_CHECKED = 0x8

class MENUITEMINFO(ctypes.Structure):
    _fields_ = [
        ('cbSize', wintypes.UINT),
        ('fMask', wintypes.UINT),
        ('fType', wintypes.UINT),
        ('fState', wintypes.UINT),
        ('wID', wintypes.UINT),
        ('hSubMenu', wintypes.HMENU),
        ('hbmpChecked', wintypes.HBITMAP),
        ('hbmpUnchecked', wintypes.HBITMAP),
        ('dwItemData', wintypes.LPVOID),
        ('dwTypeData', wintypes.LPWSTR),
        ('cch', wintypes.UINT),
        ('hbmpItem', wintypes.HBITMAP),
    ]

class CADACDPV(object):

    def __init__(self):
        pass

    def menu_search_for_specified_id(self, menu_handle, id_to_find):  # returns ( direct-menu-handle, position-on-menu )
        menu_item_count = user32.GetMenuItemCount(menu_handle)
        for menu_pos in range(menu_item_count):
            sub_menu_handle = user32.GetSubMenu(menu_handle, menu_pos)
            if sub_menu_handle != 0:
                (h, p) = self.menu_search_for_specified_id(sub_menu_handle, id_to_find)
                if h != 0: return (h, p)
            else:
                mii = MENUITEMINFO()
                mii.cbSize = ctypes.sizeof(mii)
                mii.fMask = MIIM_ID
                mii.dwTypeData = None
                lpmii = ctypes.byref(mii)
                user32.GetMenuItemInfoW(menu_handle, menu_pos, True, lpmii)
                if mii.wID == id_to_find: return (menu_handle, menu_pos)
        return (0, 0)  # nothing found

    def view_menu_sync_vertical_scroll_not_on(self):
        npp_main_menu_handle = notepad.getMenuHandle(1)
        (owner_menu, pos_in_owner_menu) = self.menu_search_for_specified_id(
                npp_main_menu_handle, int(MENUCOMMAND.VIEW_SYNSCROLLV))
        if owner_menu != 0:
            mii = MENUITEMINFO()
            mii.cbSize = ctypes.sizeof(mii)
            mii.fMask = MIIM_STATE
            mii.dwTypeData = None
            lpmii = ctypes.byref(mii)
            user32.GetMenuItemInfoW(owner_menu, pos_in_owner_menu, True, lpmii)
            if not (mii.fState & MFS_DISABLED) and not (mii.fState & MFS_CHECKED):
                return True
        return False

    def run(self):
        notepad.menuCommand(MENUCOMMAND.VIEW_CLONE_TO_ANOTHER_VIEW)
        editor2.setFirstVisibleLine(editor1.getFirstVisibleLine() + editor1.linesOnScreen())
        if self.view_menu_sync_vertical_scroll_not_on():
            notepad.menuCommand(MENUCOMMAND.VIEW_SYNSCROLLV)

if __name__ == '__main__': CADACDPV().run()

Alan Kilborn

@Ekopalypse

One thing I noticed… In the code you provided, you called:

notepad.getMenuHandle(1)

and it works to get the main-menu handle (I suppose! because the rest of the logic works!).

But the documentation for this says 0 should be the main menu:

Is my PythonScript documentation simply out-of-date in this regard?
Or…?

Ekopalypse

@Alan-Kilborn

Not sure if this is an issue with PS code or documentation?
But yes, 1 seems to return the main and 0 the plugin handle.

PeterJones

@Ekopalypse said in Page side by side preview/ feature request:

@Alan-Kilborn

Not sure if this is an issue with PS code or documentation?
But yes, 1 seems to return the main and 0 the plugin handle.

When I implemented in perl, I used 1 for main and 0 for plugin. The NPPM_GETMENUHANDLE docs agree that 1 is main.

The PS docs are wrong.

overstop

When reading a book, you have lelf and right page open thus I was thinking in np++ this book view side by side would be a natural option to have.