Minecraft Resizer (for Windows)

mcresize-win32.py

#
# Minecraft Resizer (for Windows)
# Copyright (C) 2010, Daniel Keep.
# Licensed under the BSD <http://www.opensource.org/licenses/bsd-license.php>
# Canonical URL: https://gist.github.com/675096
#
# Changelog:
#
# 2010-11-13:
# - Added option to center window on the primary screen.
# - Fixed problem with calling FindWindow.  Sometimes, I just want to smack
#   ctypes.  Also fixed swapping X & Y of window position when resizing.
#


#
# Stuff you can edit.
#


# Select the resolution to set the Minecraft window to.  Note that this script
# takes care to ensure the window borders are not included in this measurement.
# This means that if you set the resolution to your monitor resolution, the
# window will be larger than your monitor can display due to the borders!

# Supports 480p, 720p, 1080p
RESOLUTION = '720p'

# Center on screen?  (Note: centers on to your *primary* screen only.)
CENTER = True


#
# You shouldn't need to edit anything below here.
#


RESOLUTIONS = {
    '480p':  (720, 480),
    '720p':  (1280, 720),
    '1080p': (1920, 1080),
}

WINDOW_WIDTH, WINDOW_HEIGHT = RESOLUTIONS[RESOLUTION]

#
# Win32 api declarations.
#

from ctypes import *

HWND = c_voidp
LPCTSTR = c_wchar_p

class RECT(Structure):
    _fields_ = [('left', c_long),
                ('top', c_long),
                ('right', c_long),
                ('bottom', c_long)]

def ErrorIfZero(handle):
    if handle == 0:
        raise WinError()
    else:
        return handle

FindWindowEx = windll.user32.FindWindowExW

GetClientRect = windll.user32.GetClientRect
GetClientRect.argtypes = [HWND, POINTER(RECT)]
GetClientRect.restype = ErrorIfZero

GetWindowRect = windll.user32.GetWindowRect
GetWindowRect.argtypes = [HWND, POINTER(RECT)]
GetWindowRect.restype = ErrorIfZero

MoveWindow = windll.user32.MoveWindow
MoveWindow.argtypes = [HWND, c_int, c_int, c_int, c_int, c_bool]
MoveWindow.restype = ErrorIfZero

SystemParametersInfo = windll.user32.SystemParametersInfoW

SPI_GETWORKAREA = 0x0030

MessageBox = windll.user32.MessageBoxW
MessageBox.argtypes = [HWND, LPCTSTR, LPCTSTR, c_uint]

MB_OK =             0x00000000
MB_ICONASTERISK =   0x00000020

MINECRAFT_WND_TITLE = (u"Minecraft", u"Minecraft Launcher")
MINECRAFT_WND_CLASS = u"SunAwtFrame"

#
# Do the resize.
#

hwnd = None

for title in MINECRAFT_WND_TITLE:
    hwnd = FindWindowEx(0, 0, MINECRAFT_WND_CLASS, title)
    if hwnd: break

if not hwnd:
    MessageBox(None,
               "Could not locate the Minecraft window.  Is it running?",
               "Minecraft Resizer",
               MB_OK + MB_ICONASTERISK)

    import sys
    sys.exit(1)

crect = RECT()
wrect = RECT()

GetClientRect(hwnd, pointer(crect))
GetWindowRect(hwnd, pointer(wrect))

diff_w = (wrect.right-wrect.left) - (crect.right-crect.left)
diff_h = (wrect.bottom-wrect.top) - (crect.bottom-crect.top)

wnd_w = WINDOW_WIDTH + diff_w
wnd_h = WINDOW_HEIGHT + diff_h

wnd_l = wrect.left
wnd_t = wrect.top

force_repaint = True

if CENTER:
    drect = RECT()
    SystemParametersInfo(SPI_GETWORKAREA, 0, pointer(drect), 0)
    desk_w = (drect.right-drect.left)
    desk_h = (drect.bottom-drect.top)

    wnd_l = (desk_w-wnd_w)//2
    wnd_t = (desk_h-wnd_h)//2

MoveWindow(hwnd, wnd_l, wnd_t, wnd_w, wnd_h, force_repaint)