My rough implementation of @Coises suggestion is as follows
# encoding=utf-8
"""in response to https://community.notepad-plus-plus.org/topic/27351/
Trying to implement @Coises idea for setting the wrap to exactly 80
"""
from Npp import *
import ctypes
from ctypes import wintypes
# Define the RECT structure to match Win32 API
class RECT(ctypes.Structure):
_fields_ = [
("left", wintypes.LONG),
("top", wintypes.LONG),
("right", wintypes.LONG),
("bottom", wintypes.LONG)
]
def width(self):
return self.right - self.left
def height(self):
return self.bottom - self.top
def pysc_setWrap80(ed=editor):
#console.write("ed={}\n".format(ed))
WRAPCHARS = 80
# Setup the Win32 function prototype
user32 = ctypes.windll.user32
user32.GetClientRect.argtypes = [wintypes.HWND, ctypes.POINTER(RECT)]
user32.GetClientRect.restype = wintypes.BOOL
def get_window_size(hwnd):
# 2. Instantiate the RECT structure
rect = RECT()
# 3. Call GetClientRect passing the rect by reference
if user32.GetClientRect(hwnd, ctypes.byref(rect)):
# 4. Parse the results
# Client coordinates: top-left is always (0,0)
return rect
else:
raise Exception("GetClientRect failed")
sz = get_window_size(ed.hwnd)
#console.write("{} => {}\n".format(ed.hwnd, {"width": sz.width(), "height": sz.height()}))
usableWidth = sz.width()
for m in range(0, 1+ed.getMargins()):
w = ed.getMarginWidthN(m)
usableWidth -= w
#console.write("m#{}: {} => usableWidth: {}\n".format(m, w, usableWidth))
widthWrappedChars = ed.textWidth(0,"_"*WRAPCHARS)+1 # one extra pixel to be able to show the VerticalEdge indicator line
wantMargin = usableWidth - widthWrappedChars
if wantMargin < 1:
wantMargin = 0
#console.write("{}\n".format({"windowWidth": sz.width(), "usableWidth": usableWidth, "pixelsFor80Char": widthWrappedChars, "wantMargin": wantMargin}))
ed.setMarginRight(wantMargin)
ed.setMarginLeft(0)
def pysc_setWrap80e1(args=None):
pysc_setWrap80(editor1)
def pysc_setWrap80e2(args=None):
pysc_setWrap80(editor2)
def pysc_setWrap80eX(args=None):
pysc_setWrap80(editor)
editor.callback(pysc_setWrap80eX, [SCINTILLANOTIFICATION.PAINTED])
console.write("SetWrap80 registered callback\n")
(this script tested in PythonScript 3)
The FAQ (https://community.notepad-plus-plus.org/topic/23039/faq-how-to-install-and-run-a-script-in-pythonscript) explains how to run a script, or how to make it run automatically at startup
The script registers the PAINTED notification – I found that UPDATEUI doesn’t happen everytime you change the window width, whereas PAINTED does… but it means that the callback is running a lot. I wish I knew of a notification that was better suited to just-on-resize, but I don’t. Maybe one of the other PythonScript experts can chime in with a better notification to use (or other suggestions for improvements). I just figured I’d do a proof of concept.
If you aren’t changing window size all that often, then it would be better to make a copy of that script that just re-adjusts the 80-character margin on demand (ie, when you run the script) by not using the editor.callback(...) line, and instead just calling pysc_setWrap80(editor) at the end.
