! Copyright (C) 2006, 2008 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors math arrays assocs cocoa cocoa.application
command-line kernel memory namespaces cocoa.messages
cocoa.runtime cocoa.subclassing cocoa.pasteboard cocoa.types
cocoa.windows cocoa.classes cocoa.nibs sequences system ui
ui.backend ui.clipboards ui.gadgets ui.gadgets.worlds
ui.cocoa.views core-foundation core-foundation.run-loop threads
math.geometry.rect fry libc generalizations alien.c-types
cocoa.views combinators io.thread ;
IN: ui.cocoa

TUPLE: handle ;
TUPLE: window-handle < handle view window ;
TUPLE: offscreen-handle < handle context buffer ;

C: <window-handle> window-handle
C: <offscreen-handle> offscreen-handle

SINGLETON: cocoa-ui-backend

TUPLE: pasteboard handle ;

C: <pasteboard> pasteboard

M: pasteboard clipboard-contents
    handle>> pasteboard-string ;

M: pasteboard set-clipboard-contents
    handle>> set-pasteboard-string ;

: init-clipboard ( -- )
    NSPasteboard -> generalPasteboard <pasteboard>
    clipboard set-global
    <clipboard> selection set-global ;

: world>NSRect ( world -- NSRect )
    [ window-loc>> ] [ dim>> ] bi [ first2 ] bi@ <NSRect> ;

: gadget-window ( world -- )
    dup <FactorView>
    2dup swap world>NSRect <ViewWindow>
    [ [ -> release ] [ install-window-delegate ] bi* ]
    [ <window-handle> ] 2bi
    >>handle drop ;

M: cocoa-ui-backend set-title ( string world -- )
    handle>> window>> swap <NSString> -> setTitle: ;

: enter-fullscreen ( world -- )
    handle>> view>>
    NSScreen -> mainScreen
    f -> enterFullScreenMode:withOptions:
    drop ;

: exit-fullscreen ( world -- )
    handle>> view>> f -> exitFullScreenModeWithOptions: ;

M: cocoa-ui-backend set-fullscreen* ( ? world -- )
    swap [ enter-fullscreen ] [ exit-fullscreen ] if ;

M: cocoa-ui-backend fullscreen* ( world -- ? )
    handle>> view>> -> isInFullScreenMode zero? not ;

: auto-position ( world -- )
    dup window-loc>> { 0 0 } = [
        handle>> window>> -> center
    ] [
        drop
    ] if ;

M: cocoa-ui-backend (open-window) ( world -- )
    dup gadget-window
    dup auto-position
    handle>> window>> f -> makeKeyAndOrderFront: ;

M: cocoa-ui-backend (close-window) ( handle -- )
    window>> -> release ;

M: cocoa-ui-backend close-window ( gadget -- )
    find-world [
        handle>> [
            window>> f -> performClose:
        ] when*
    ] when* ;

M: cocoa-ui-backend raise-window* ( world -- )
    handle>> [
        window>> dup f -> orderFront: -> makeKeyWindow
        NSApp 1 -> activateIgnoringOtherApps:
    ] when* ;

: pixel-size ( pixel-format -- size )
    0 <int> [ NSOpenGLPFAColorSize 0 -> getValues:forAttribute:forVirtualScreen: ]
    keep *int -3 shift ;

: offscreen-buffer ( world pixel-format -- alien w h pitch )
    [ dim>> first2 ] [ pixel-size ] bi*
    { [ * * malloc ] [ 2drop ] [ drop nip ] [ nip * ] } 3cleave ;

: gadget-offscreen-context ( world -- context buffer )
    NSOpenGLPFAOffScreen 1array <PixelFormat>
    [ nip NSOpenGLContext -> alloc swap f -> initWithFormat:shareContext: dup ]
    [ offscreen-buffer ] 2bi
    4 npick [ -> setOffScreen:width:height:rowbytes: ] dip ;

M: cocoa-ui-backend (open-offscreen-buffer) ( world -- )
    dup gadget-offscreen-context <offscreen-handle> >>handle drop ;

M: cocoa-ui-backend (close-offscreen-buffer) ( handle -- )
    [ context>> -> release ]
    [ buffer>> free ] bi ;

GENERIC: (gl-context) ( handle -- context )
M: window-handle (gl-context) view>> -> openGLContext ;
M: offscreen-handle (gl-context) context>> ;

M: handle select-gl-context ( handle -- )
    (gl-context) -> makeCurrentContext ;

M: handle flush-gl-context ( handle -- )
    (gl-context) -> flushBuffer ;

M: cocoa-ui-backend offscreen-pixels ( world -- alien w h )
    [ handle>> buffer>> ] [ dim>> first2 neg ] bi ;

M: cocoa-ui-backend beep ( -- )
    NSBeep ;

CLASS: {
    { +superclass+ "NSObject" }
    { +name+ "FactorApplicationDelegate" }
}

{  "applicationDidUpdate:" "void" { "id" "SEL" "id" }
    [ 3drop reset-run-loop ]
} ;

: install-app-delegate ( -- )
    NSApp FactorApplicationDelegate install-delegate ;

SYMBOL: cocoa-init-hook

cocoa-init-hook global [
    [ "MiniFactor.nib" load-nib install-app-delegate ] or
] change-at

M: cocoa-ui-backend ui
    "UI" assert.app [
        [
            init-clipboard
            cocoa-init-hook get call
            start-ui
            f io-thread-running? set-global
            init-thread-timer
            reset-run-loop
            NSApp -> run
        ] ui-running
    ] with-cocoa ;

cocoa-ui-backend ui-backend set-global

[ running.app? "ui" "listener" ? ] main-vocab-hook set-global