; ============================================================
; QuickWindowSnap.ahk
;
; AutoHotkey v2 script that adds quick keyboard shortcuts for
; snapping the active window to screen halves/quarters, beyond
; what the built-in Win+Arrow shortcuts offer.
;
; Requirements: AutoHotkey v2 (https://www.autohotkey.com/)
;
; Shortcuts (Ctrl+Alt+Numpad):
;   Numpad4 = Snap left half        Numpad6 = Snap right half
;   Numpad8 = Snap top half         Numpad2 = Snap bottom half
;   Numpad7 = Snap top-left quarter Numpad9 = Snap top-right quarter
;   Numpad1 = Snap bottom-left      Numpad3 = Snap bottom-right
;   Numpad5 = Center window (80% of screen)
;
; Usage: double-click to run, or place in your Startup folder.
; ============================================================

#Requires AutoHotkey v2.0

SnapWindow(x, y, w, h) {
    WinGetPos(&curX, &curY, &curW, &curH, "A")
    MonitorGetWorkArea(MonitorGetPrimary(), &left, &top, &right, &bottom)
    screenW := right - left
    screenH := bottom - top
    WinMove(left + x * screenW, top + y * screenH, w * screenW, h * screenH, "A")
}

^!Numpad4::SnapWindow(0, 0, 0.5, 1)      ; left half
^!Numpad6::SnapWindow(0.5, 0, 0.5, 1)    ; right half
^!Numpad8::SnapWindow(0, 0, 1, 0.5)      ; top half
^!Numpad2::SnapWindow(0, 0.5, 1, 0.5)    ; bottom half
^!Numpad7::SnapWindow(0, 0, 0.5, 0.5)    ; top-left quarter
^!Numpad9::SnapWindow(0.5, 0, 0.5, 0.5)  ; top-right quarter
^!Numpad1::SnapWindow(0, 0.5, 0.5, 0.5)  ; bottom-left quarter
^!Numpad3::SnapWindow(0.5, 0.5, 0.5, 0.5); bottom-right quarter
^!Numpad5::SnapWindow(0.1, 0.1, 0.8, 0.8); centered, 80% size