FreeRDP/client/Mac/MRDPView.m

//
//  MRDPView.m
//  MacFreeRDP
//
//  Created by Laxmikant Rashinkar
//  Copyright (c) 2012 FreeRDP.org All rights reserved.
//

/*
 * TODO
 *  + provide a UI for configuring optional parameters, but keep cmd line args
 *  + audio redirection is delayed considerably
 *  + caps lock key needs to be sent in func flagsChanged()
 *  + libfreerdp-utils.1.0.dylib needs to be installed to /usr/local/lib
 *
 *  - MRDPView implementation is incomplete
 *  - all variables should have consistent nameing scheme - camel case
 *  - all funcs same as above
 *  - PolygonSc seems to create a transparent rect
 *  - ensure mouse cursor changes are working ok after moving to NSTracking area
 *  - RAIL: 
 *  -       
 *  -       
 *  -       tool tips to be correctly positioned
 *  -       dragging is slightly of
 *  -       resize after dragging not working
 *  -       dragging app from macbook to monitor gives exec/access err
 *  -       unable to drag rect out of monitor boundaries
 *  -       
 *  -       
 *  -        
 */
 
#import "MRDPView.h"
#import "MRDPCursor.h"

#define RUN_IN_XCODE

// LK_TODO 
#define GOT_HERE //printf("### got here: %s : %s() : %d\n", __FILE__, __func__, __LINE__)

// RAIL_TODO DELETE WHEN DONE TESTING
#define MRDP_DRAW_INDIVIDUAL_RECTS

@implementation MRDPView

MRDPView *g_mrdpview;

@synthesize is_connected;

struct kkey g_keys[];
void convert_color_space(char *dest, char *src, NSRect* drawRect, int width, int height);

const char* error_code_names[] =
{
    "RAIL_EXEC_S_OK",
    "RAIL_EXEC_E_HOOK_NOT_LOADED",
    "RAIL_EXEC_E_DECODE_FAILED",
    "RAIL_EXEC_E_NOT_IN_ALLOWLIST",
    "RAIL_EXEC_E_FILE_NOT_FOUND",
    "RAIL_EXEC_E_FAIL",
    "RAIL_EXEC_E_SESSION_LOCKED"
};

struct kkey g_keys[256] =
{
    { 0x1e, 0 }, // a           0
    { 0x1f, 0 }, // s
    { 0x20, 0 }, // d
    { 0x21, 0 }, // f
    { 0x23, 0 }, // h
    { 0x22, 0 }, // g
    { 0x2c, 0 }, // z
    { 0x2d, 0 }, // x
    { 0x2e, 0 }, // c
    { 0x2f, 0 }, // v
    { 0x00, 0 }, //             10
    { 0x30, 0 }, // b
    { 0x10, 0 }, // q
    { 0x11, 0 }, // w
    { 0x12, 0 }, // e
    { 0x13, 0 }, // r
    { 0x15, 0 }, // y
    { 0x14, 0 }, // t
    { 0x02, 0 }, // 1
    { 0x03, 0 }, // 2
    { 0x04, 0 }, // 3           20
    { 0x05, 0 }, // 4
    { 0x07, 0 }, // 6
    { 0x06, 0 }, // 5
    { 0x0d, 0 }, // = or +
    { 0x0a, 0 }, // 9
    { 0x08, 0 }, // 7
    { 0x0c, 0 }, // - or _
    { 0x09, 0 }, // 8
    { 0x0b, 0 }, // 0
    { 0x1b, 0 }, // ] or }      30
    { 0x18, 0 }, // o
    { 0x16, 0 }, // u
    { 0x1a, 0 }, // [ or {
    { 0x17, 0 }, // i
    { 0x19, 0 }, // p
    { 0x1c, 0 }, // enter
    { 0x26, 0 }, // l
    { 0x24, 0 }, // j
    { 0x28, 0 }, // ' or "
    { 0x25, 0 }, // k           40
    { 0x27, 0 }, // ; or :
    { 0x2b, 0 }, // \ or |
    { 0x33, 0 }, // , or <
    { 0x35, 0 }, // / or ?
    { 0x31, 0 }, // n
    { 0x32, 0 }, // m
    { 0x34, 0 }, // . or >
    { 0x0f, 0 }, // tab
    { 0x39, 0 }, // space
    { 0x29, 0 }, // ` or ~      50
    { 0x0e, 0 }, // backspace
    { 0x00, 0 }, //
    { 0x01, 0 }, // esc
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 }, //             60
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x53, 0 }, // KP.
    { 0x00, 0 },
    { 0x37, 0 }, // KP*
    { 0x00, 0 },
    { 0x4e, 0 }, // KP+
    { 0x00, 0 }, //             70
    { 0x45, 0 }, // num lock
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x35, 1 }, // KP/
    { 0x1c, 1 }, // KPEnter
    { 0x00, 0 },
    { 0x4a, 0 }, // KP-
    { 0x00, 0 },
    { 0x00, 0 }, //             80
    { 0x00, 0 },
    { 0x52, 0 }, // KP0
    { 0x4f, 0 }, // KP1
    { 0x50, 0 }, // KP2
    { 0x51, 0 }, // KP3
    { 0x4b, 0 }, // KP4
    { 0x4c, 0 }, // KP5
    { 0x4d, 0 }, // KP6
    { 0x47, 0 }, // KP7
    { 0x00, 0 }, //             90
    { 0x48, 0 }, // KP8
    { 0x49, 0 }, // KP9
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 }, //             100
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x5d, 1 }, // menu        110
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x52, 1 }, // Insert
    { 0x47, 1 }, // Home
    { 0x49, 1 }, // PgUp
    { 0x53, 1 }, // Delete
    { 0x00, 0 },
    { 0x4f, 1 }, // End
    { 0x00, 0 }, //             120
    { 0x51, 1 }, // PgDown
    { 0x3b, 0 }, // f1
    { 0x4b, 1 }, // left
    { 0x4d, 1 }, // right
    { 0x50, 1 }, // down
    { 0x48, 1 }, // up
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
    { 0x00, 0 },
};

/************************************************************************
                         methods we override
************************************************************************/

/** *********************************************************************
 * create MRDPView with specified rectangle
 ***********************************************************************/

- (id)initWithFrame:(NSRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code here.
    }
    
    return self;
}

/** *********************************************************************
 * called when MRDPView has been successfully created from the NIB
 ***********************************************************************/

- (void) awakeFromNib
{
    g_mrdpview = self;
    
    // store our window dimensions
    width = [self frame].size.width;
    height = [self frame].size.height;
    titleBarHeight = 22;
    
    [[self window] becomeFirstResponder];
    [[self window] setAcceptsMouseMovedEvents:YES];
    
    cursors = [[NSMutableArray alloc] initWithCapacity:10];
    
    firstCreateWindow = TRUE;
    skipResizeOnce = YES;
    windows = [[NSMutableArray alloc] initWithCapacity:10];
    
    // setup a mouse tracking area
    NSTrackingArea * trackingArea = [[NSTrackingArea alloc] initWithRect:[self visibleRect] options:NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingCursorUpdate | NSTrackingEnabledDuringMouseDrag | NSTrackingActiveWhenFirstResponder owner:self userInfo:nil];
    
    //[self addTrackingArea:trackingArea];

    // windows in RemoteApp (RAIL) mode cannot have title bars
    NSArray * args = [[NSProcessInfo processInfo] arguments];
    for (NSString * str in args)
    {
        if ([str compare:@"--app"] == NSOrderedSame) {
            isRemoteApp = TRUE;
            break;
        }
    }

    if (!isRemoteApp)
        [self addTrackingArea:trackingArea];
   
    mouseInClientArea = YES;
}

/** *********************************************************************
 * become first responder so we can get keyboard and mouse events
 ***********************************************************************/

- (BOOL)acceptsFirstResponder 
{ 
    return YES; 
}

/** *********************************************************************
 * called when a mouse move event occurrs
 * 
 * ideally we want to be called when the mouse moves over NSView client area,
 * but in reality we get called any time the mouse moves anywhere on the screen;
 * we could use NSTrackingArea class to handle this but this class is available
 * on Mac OS X v10.5 and higher; since we want to be compatible with older
 * versions, we do this manually. 
 *
 * TODO: here is how it can be done using legacy methods
 * http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/EventOverview/MouseTrackingEvents/MouseTrackingEvents.html#//apple_ref/doc/uid/10000060i-CH11-SW1
 ***********************************************************************/
 
 - (void) mouseMoved:(NSEvent *)event
{
    [super mouseMoved:event];
    
    if (!is_connected)
        return;

    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;

    // send mouse motion event to RDP server
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_MOVE, x, y);
}

/** *********************************************************************
 * called when left mouse button is pressed down
 ***********************************************************************/

- (void)mouseDown:(NSEvent *) event
{
    [super mouseDown:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;
    
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_DOWN | PTR_FLAGS_BUTTON1, x, y);
}

/** *********************************************************************
 * called when left mouse button is released
 ***********************************************************************/

- (void) mouseUp:(NSEvent *) event
{
    [super mouseUp:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;
    
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_BUTTON1, x, y);
}

/** *********************************************************************
 * called when right mouse button is pressed down
 ***********************************************************************/

- (void) rightMouseDown:(NSEvent *)event
{
    [super rightMouseDown:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;
    
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_DOWN | PTR_FLAGS_BUTTON2, x, y);
}

/** *********************************************************************
 * called when right mouse button is released
 ***********************************************************************/

- (void) rightMouseUp:(NSEvent *)event
{
    [super rightMouseUp:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;
    
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_BUTTON2, x, y);
}

/** *********************************************************************
 * called when middle mouse button is pressed
 ***********************************************************************/

- (void) otherMouseDown:(NSEvent *)event
{
    [super otherMouseDown:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;

    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_DOWN | PTR_FLAGS_BUTTON3, x, y);
}

/** *********************************************************************
 * called when middle mouse button is released
 ***********************************************************************/

- (void) otherMouseUp:(NSEvent *)event
{
    [super otherMouseUp:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;
    
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_BUTTON3, x, y);
}

- (void) scrollWheel:(NSEvent *)event
{
    uint16 flags;
    
    [super scrollWheel:event];
    
    if (!is_connected)
        return;

    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    y = height - y;

    flags = PTR_FLAGS_WHEEL;
    if ([event deltaY] < 0) {
        flags |= PTR_FLAGS_WHEEL_NEGATIVE | 0x0088;
    }
    else {
        flags |= 0x0078;
    }
    x += (int) [event deltaX];
    y += (int) [event deltaY];
    rdp_instance->input->MouseEvent(rdp_instance->input, flags, x, y);
}

/** *********************************************************************
 * called when mouse is moved with left button pressed
 * note: invocation order is: mouseDown, mouseDragged, mouseUp
 ***********************************************************************/

- (void) mouseDragged:(NSEvent *)event
{
    [super mouseDragged:event];
    
    if (!is_connected)
        return;
    
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    // RAIL_TODO delete this if not reqd
    if ((isRemoteApp) && (isMoveSizeInProgress)) {
        if (saveInitialDragLoc) {
            saveInitialDragLoc = NO;
            savedDragLocation.x = x;
            savedDragLocation.y = y;
            return;
        }

        int newX = x - savedDragLocation.x;
        int newY = y - savedDragLocation.y;

        NSRect r = [[self window] frame];
        r.origin.x += newX;
        r.origin.y += newY;
        [[g_mrdpview window] setFrame:r display:YES];
    }

    y = height - y;

    // send mouse motion event to RDP server
    rdp_instance->input->MouseEvent(rdp_instance->input, PTR_FLAGS_MOVE, x, y);
}

/** *********************************************************************
 * called when a key is pressed
 ***********************************************************************/

- (void) keyDown:(NSEvent *) event
{
    int key;
    
    if (!is_connected) {
        return;
    }
    
    key = [event keyCode];
    rdp_instance->input->KeyboardEvent(rdp_instance->input, g_keys[key].flags | KBD_FLAGS_DOWN, g_keys[key].key_code);
}

/** *********************************************************************
 * called when a key is released
 ***********************************************************************/

- (void) keyUp:(NSEvent *) event
{
    int key;
 
    if (!is_connected) {
        return;
    }
    
    key = [event keyCode];
    rdp_instance->input->KeyboardEvent(rdp_instance->input, g_keys[key].flags | KBD_FLAGS_RELEASE, g_keys[key].key_code);
}

/** *********************************************************************
 * called when shift, control, alt and meta keys are pressed/released
 ***********************************************************************/

- (void) flagsChanged:(NSEvent *) event
{
    NSUInteger mf = [event modifierFlags];
    
    if (!is_connected) {
        return;
    }
    
    // caps lock
    if (mf == 0x10100) {
        printf("TODO: caps lock is on\n");
        kdcapslock = 1;
    }
    if (kdcapslock && (mf == 0x100)) {
        kdcapslock = 0;
        printf("TODO: caps lock is off\n");
    }
    // left shift
    if ((kdlshift == 0) && ((mf & 2) != 0)) {
        // left shift went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_DOWN, 0x2a);
        kdlshift = 1;
    }
    if ((kdlshift != 0) && ((mf & 2) == 0)) {
        // left shift went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_RELEASE, 0x2a);
        kdlshift = 0;
    }
    
    // right shift
    if ((kdrshift == 0) && ((mf & 4) != 0)) {
        // right shift went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_DOWN, 0x36);
        kdrshift = 1;
    }
    if ((kdrshift != 0) && ((mf & 4) == 0)) {
        // right shift went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_RELEASE, 0x36);
        kdrshift = 0;
    }
    
    // left ctrl
    if ((kdlctrl == 0) && ((mf & 1) != 0)) {
        // left ctrl went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_DOWN, 0x1d);
        kdlctrl = 1;
    }
    if ((kdlctrl != 0) && ((mf & 1) == 0)) {
        // left ctrl went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_RELEASE, 0x1d);
        kdlctrl = 0;
    }
    
    // right ctrl
    if ((kdrctrl == 0) && ((mf & 0x2000) != 0)) {
        // right ctrl went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_DOWN, 0x1d);
        kdrctrl = 1;
    }
    if ((kdrctrl != 0) && ((mf & 0x2000) == 0)) {
        // right ctrl went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_RELEASE, 0x1d);
        kdrctrl = 0;
    }
    
    // left alt
    if ((kdlalt == 0) && ((mf & 0x20) != 0)) {
        // left alt went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_DOWN, 0x38);
        kdlalt = 1;
    }
    if ((kdlalt != 0) && ((mf & 0x20) == 0)) {
        // left alt went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, KBD_FLAGS_RELEASE, 0x38);
        kdlalt = 0;
    }
    
    // right alt
    if ((kdralt == 0) && ((mf & 0x40) != 0)) {
        // right alt went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_DOWN, 0x38);
        kdralt = 1;
    }
    if ((kdralt != 0) && ((mf & 0x40) == 0)) {
        // right alt went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_RELEASE, 0x38);
        kdralt = 0;
    }
    
    // left meta
    if ((kdlmeta == 0) && ((mf & 0x08) != 0)) {
        // left meta went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_DOWN, 0x5b);
        kdlmeta = 1;
    }
    if ((kdlmeta != 0) && ((mf & 0x08) == 0)) {
        // left meta went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_RELEASE, 0x5b);
        kdlmeta = 0;
    }
    
    // right meta
    if ((kdrmeta == 0) && ((mf & 0x10) != 0)) {
        // right meta went down
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_DOWN, 0x5c);
        kdrmeta = 1;
    }
    if ((kdrmeta != 0) && ((mf & 0x10) == 0)) {
        // right meta went up
        rdp_instance->input->KeyboardEvent(rdp_instance->input, 1 | KBD_FLAGS_RELEASE, 0x5c);
        kdrmeta = 0;
    }
}

- (void) releaseResources
{
    int i;
    
    for (i = 0; i < argc; i++)
    {
        if (argv[i])
            free(argv[i]);
    }
    
    for (MRDPWindow * w in windows)
    {
        [w setWindow:nil];
        [w setView:nil];
    }
    
    if (!is_connected)
        return;
    
    freerdp_channels_global_uninit();
    
    if (pixel_data)
        free(pixel_data);
    
    if (run_loop_src != 0)
        CFRunLoopRemoveSource(CFRunLoopGetCurrent(), run_loop_src_channels, kCFRunLoopDefaultMode);

    if (run_loop_src != 0)
        CFRunLoopRemoveSource(CFRunLoopGetCurrent(), run_loop_src, kCFRunLoopDefaultMode);
}

/** *********************************************************************
 * called when our view needs refreshing
 ***********************************************************************/

- (void) drawRect:(NSRect)dirtyRect
{
    if (!rdp_context)
        return;
    
    if (g_mrdpview->isRemoteApp && g_mrdpview->currentWindow) {
        return;
    }
    
    if (!bmiRep) {
        pixel_data = (char *) malloc(width * height * sizeof(struct rgba_data));
        bmiRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:(unsigned char **) &pixel_data
                                                         pixelsWide:width
                                                         pixelsHigh:height
                                                      bitsPerSample:8
                                                    samplesPerPixel:sizeof(struct rgba_data)
                                                           hasAlpha:YES
                                                           isPlanar:NO
                                                     colorSpaceName:NSDeviceRGBColorSpace
                                                       bitmapFormat:0 //NSAlphaFirstBitmapFormat
                                                        bytesPerRow:width * sizeof(struct rgba_data)
                                                       bitsPerPixel:0];
    }
    
    [bmiRep drawInRect:dirtyRect fromRect:dirtyRect operation:NSCompositeCopy fraction:1.0 respectFlipped:NO hints:nil];
}

/************************************************************************
                              instance methods
************************************************************************/

/** *********************************************************************
 * called when RDP server wants us to update a rect with new data
 ***********************************************************************/

- (void) my_draw_rect:(void *)context
{
    int    w;
    int    h;
    
    rdpContext * ctx = (rdpContext *) context;
    
    struct rgba_data 
    {
        char red;
        char green;
        char blue;
        char alpha;
    };
    
    if (isRemoteApp && currentWindow) {
        NSRect vrect = [ [currentWindow view] frame];
        [[currentWindow view] setNeedsDisplayInRect:vrect];
        // actual drawing will be done in MRDPRailView:drawRect()
        return;
    }
    
    w = width;
    h = height;
    rect.origin.x = 0;
    rect.origin.y = 0;
    rect.size.width = w;
    rect.size.height = h;
    
    if (!bmiRep) {
        pixel_data = (char *) malloc(w * h * sizeof(struct rgba_data));
        bmiRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:(unsigned char **) &pixel_data
                                                         pixelsWide:w
                                                         pixelsHigh:h
                                                      bitsPerSample:8
                                                    samplesPerPixel:sizeof(struct rgba_data)
                                                           hasAlpha:YES
                                                           isPlanar:NO
                                                     colorSpaceName:NSDeviceRGBColorSpace
                                                       bitmapFormat:0 //NSAlphaFirstBitmapFormat
                                                        bytesPerRow:w * sizeof(struct rgba_data)
                                                       bitsPerPixel:0];
    }
    
#ifdef MRDP_DRAW_INDIVIDUAL_RECTS
    [self setNeedsDisplayInRect:rect];
    return;
#endif

    convert_color_space(pixel_data, (char *) ctx->gdi->primary_buffer, &rect, w, h);
    [self setNeedsDisplayInRect:rect];
}

/** *********************************************************************
 * save state info for use by other methods later on
 ***********************************************************************/

- (void) saveStateInfo:(freerdp *) instance:(rdpContext *) context
{
    rdp_instance = instance;
    rdp_context = context;
}

/** *********************************************************************
 * double check that a mouse event occurred in our client view
 ***********************************************************************/

- (BOOL) eventIsInClientArea :(NSEvent *) event :(int *) xptr :(int *) yptr
{
    NSPoint loc = [event locationInWindow];
    int x = (int) loc.x;
    int y = (int) loc.y;
    
    if ((x < 0) || (y < 0)) {
        if (mouseInClientArea) {
            // set default cursor before leaving client area
            mouseInClientArea = NO;
            NSCursor *cur = [NSCursor arrowCursor];
            [cur set];
        }
        return NO;
    }
    if ((x > width) || (y > height)) {
        if (mouseInClientArea) {
            // set default cursor before leaving client area
            mouseInClientArea = NO;
            NSCursor *cur = [NSCursor arrowCursor];
            [cur set];
        }
        return NO;
    }
    
    // on Mac origin is at lower left, but we want it on upper left
    y = height - y;
    
    *xptr = x;
    *yptr = y;
    mouseInClientArea = YES;
    return YES;
}

/** *********************************************************************
 * called when we fail to connect to a RDP server
 ***********************************************************************/

- (void) rdpConnectError
{
    
    NSAlert *alert = [[NSAlert alloc] init];
    [alert setMessageText:@"Error connecting to server"];
    [alert beginSheetModalForWindow:[g_mrdpview window]
                      modalDelegate:g_mrdpview
                     didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
                        contextInfo:nil];
}

/** *********************************************************************
 * called when we fail to launch remote app on RDP server
 ***********************************************************************/

- (void) rdpRemoteAppError
{
    NSAlert *alert = [[NSAlert alloc] init];
    [alert setMessageText:@"Error starting remote app on specified server"];
    [alert beginSheetModalForWindow:[g_mrdpview window]
                      modalDelegate:g_mrdpview
                     didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
                        contextInfo:nil];
}

/** *********************************************************************
 * just a terminate selector for above call
 ***********************************************************************/

- (void) alertDidEnd:(NSAlert *)a returnCode:(NSInteger)rc contextInfo:(void *)ci 
{
    [NSApp terminate:nil];
}

- (void) onPasteboardTimerFired :(NSTimer *) timer
{
    NSArray *types;
    int     i;
    
    i = (int) [pasteboard_rd changeCount];
    if (i != pasteboard_changecount)
    {
        pasteboard_changecount = i;
        types = [NSArray arrayWithObject:NSStringPboardType];
        NSString *str = [pasteboard_rd availableTypeFromArray:types];
        if (str != nil)
        {
            cliprdr_send_supported_format_list(rdp_instance);
        }
    }
}

- (void) setViewSize : (int) w : (int) h
{
    // store current dimensions
    width = w;
    height = h;

    // compute difference between window and client area
    NSRect outerRect = [[g_mrdpview window] frame];
    NSRect innerRect = [g_mrdpview frame];
    
    int widthDiff = outerRect.size.width - innerRect.size.width;
    int heightDiff = outerRect.size.height - innerRect.size.height;

    if (!g_mrdpview->isRemoteApp) {
        // we are not in RemoteApp mode, disable resizing
        outerRect.size.width = w + widthDiff;
        outerRect.size.height = h + heightDiff;
        [[g_mrdpview window] setMaxSize:outerRect.size];
        [[g_mrdpview window] setMinSize:outerRect.size];
        [[g_mrdpview window] setFrame:outerRect display:YES];

        // set client area to specified dimensions
        innerRect.size.width = w;
        innerRect.size.height = h;
        [g_mrdpview setFrame:innerRect];

        return;
    }
    
    // we are in RemoteApp mode
    
    outerRect.origin.x = 0;
    outerRect.origin.y = 0;
    outerRect.size.width = width + widthDiff;
    outerRect.size.height = height + heightDiff;
    [[g_mrdpview window] setFrame:outerRect display:YES];
        
    // set client area to specified dimensions
    innerRect.size.width = width;
    innerRect.size.height = height;
    [g_mrdpview setFrame:innerRect];
    
    // main window displays desktop background - hide it
    [[g_mrdpview window] orderOut:g_mrdpview];
}

// RAIL_TODO is this func required
- (void) windowDidResize:(NSNotification *) notification
{
    RAIL_WINDOW_MOVE_ORDER windowMove;

    printf("RAIL_TODO: MRDPView: windowDidResize() - not yet implemented\n");

    return;
    
    // window resize valid only in RemoteApp mode
    if (!g_mrdpview->isRemoteApp)
        return;
    
    // window has resized, let server know

    NSRect r = [[g_mrdpview window] frame];
    printf("----- LK_TODO: MRDPView:windowDidResize (%d,%d %dx%d)\n", 
           (int) r.origin.x, (int) r.origin.y, 
           (int) r.size.width, (int) r.size.height);
    

    windowMove.windowId = [currentWindow windowID];
    
    windowMove.left = (uint16) r.origin.x;                           // x-cordinate of top left corner
    windowMove.right = (uint16) (windowMove.left + r.size.width);    // x-cordinate of bottom right corner
    windowMove.top = (uint16) r.origin.y;                            // y-cordinate of top left corner
    windowMove.bottom = (uint16) (windowMove.top + r.size.height);   // y-cordinate of bottom right corner

    printf("----- LK_TODO: MRDPView:windowDidResize windowID=%d left=%d top=%d right=%d bottom=x%d width=%f height=%f\n", 
           [currentWindow windowID], windowMove.left, windowMove.top, windowMove.right, windowMove.bottom, r.size.width, r.size.height);

    //mac_send_rail_client_event(g_mrdpview->rdp_instance->context->channels, RDP_EVENT_TYPE_RAIL_CLIENT_WINDOW_MOVE, &windowMove);
}

/************************************************************************
 *                                                                      *
 *                              C functions                             *
 *                                                                      *
 ***********************************************************************/

/** *********************************************************************
 * connect to RDP server
 *
 * @return 0 on success, -1 on failure
 ***********************************************************************/

int rdp_connect()
{
    freerdp *inst;
    int     status;
    
    freerdp_channels_global_init();

    inst = freerdp_new();
    inst->PreConnect = mac_pre_connect; 
    inst->PostConnect = mac_post_connect;
    inst->context_size = sizeof(struct mac_context);
    inst->ContextNew = mac_context_new;
    inst->ContextFree = mac_context_free;
    inst->ReceiveChannelData = receive_channel_data;
    freerdp_context_new(inst);
    
    status = freerdp_connect(inst);
    if(status) {
        freerdp_check_fds(inst);
        [g_mrdpview setIs_connected:1];
        return 0;
    }
    [g_mrdpview setIs_connected:0];
    [g_mrdpview rdpConnectError];
    return -1;
}

/** *********************************************************************
 * a callback given to freerdp_connect() to process the pre-connect operations.
 *
 * @param inst  - pointer to a rdp_freerdp struct that contains the connection's parameters, and 
 *                will be filled with the appropriate informations.
 *
 * @return true if successful. false otherwise.
 ************************************************************************/

BOOL mac_pre_connect(freerdp *inst)
{
	int status;
    char *cptr;
    int  len;
    int  i;
    
    inst->settings->OffscreenSupportLevel = FALSE;
    inst->settings->GlyphSupportLevel = GLYPH_SUPPORT_FULL;
    inst->settings->OrderSupport[NEG_GLYPH_INDEX_INDEX] = TRUE;
    inst->settings->OrderSupport[NEG_FAST_GLYPH_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_FAST_INDEX_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_SCRBLT_INDEX] = TRUE;
    inst->settings->OrderSupport[NEG_SAVEBITMAP_INDEX] = FALSE;
    
    inst->settings->BitmapCacheEnabled = TRUE;
    inst->settings->OrderSupport[NEG_MEMBLT_INDEX] = TRUE;
    inst->settings->OrderSupport[NEG_MEMBLT_V2_INDEX] = TRUE;
    inst->settings->OrderSupport[NEG_MEM3BLT_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_MEM3BLT_V2_INDEX] = FALSE;
    inst->settings->BitmapCacheV2NumCells = 3; // 5;
    inst->settings->BitmapCacheV2CellInfo[0].numEntries = 0x78; // 600;
    inst->settings->BitmapCacheV2CellInfo[0].persistent = FALSE;
    inst->settings->BitmapCacheV2CellInfo[1].numEntries = 0x78; // 600;
    inst->settings->BitmapCacheV2CellInfo[1].persistent = FALSE;
    inst->settings->BitmapCacheV2CellInfo[2].numEntries = 0x150; // 2048;
    inst->settings->BitmapCacheV2CellInfo[2].persistent = FALSE;
    inst->settings->BitmapCacheV2CellInfo[3].numEntries = 0; // 4096;
    inst->settings->BitmapCacheV2CellInfo[3].persistent = FALSE;
    inst->settings->BitmapCacheV2CellInfo[4].numEntries = 0; // 2048;
    inst->settings->BitmapCacheV2CellInfo[4].persistent = FALSE;
    
    inst->settings->OrderSupport[NEG_MULTIDSTBLT_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_MULTIPATBLT_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_MULTISCRBLT_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_MULTIOPAQUERECT_INDEX] = FALSE;
    inst->settings->OrderSupport[NEG_POLYLINE_INDEX] = FALSE;
    inst->settings->ColorDepth = 24;
    inst->settings->SoftwareGdi = 1;
    
    // setup callbacks
    inst->update->BeginPaint = mac_begin_paint;
    inst->update->EndPaint = mac_end_paint;
    inst->update->SetBounds = mac_set_bounds;
    inst->update->BitmapUpdate = mac_bitmap_update;
    
    NSArray *args = [[NSProcessInfo processInfo] arguments];

#ifdef RUN_IN_XCODE
    g_mrdpview->argc = 30;
#else
    g_mrdpview->argc = (int) [args count];
#endif

    g_mrdpview->argv = malloc(sizeof(char *) * g_mrdpview->argc);
    if (g_mrdpview->argv == NULL) {
        return FALSE;
    }
    
#ifdef RUN_IN_XCODE
    
    // create our own cmd line args
    i = 0;
    
    NSString *sptr = [args objectAtIndex:0];
    len = [sptr length] + 1;
    cptr = (char *) malloc(len);
    strcpy(cptr, [sptr UTF8String]);
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "-g");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "1280x800"); 
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "--sec");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "rdp");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "--plugin");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "cliprdr");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "--plugin");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "rdpsnd");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "-u");
    g_mrdpview->argv[i++] = cptr;
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "lk");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "-p");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "abc@@@123");
    g_mrdpview->argv[i++] = cptr;
 
#if 1
    // for RemoteApp (RAIL) testing
    cptr = (char *)malloc(80);
    strcpy(cptr, "--app");
    g_mrdpview->argv[i++] = cptr;
    g_mrdpview->isRemoteApp = TRUE;

    cptr = (char *)malloc(80);
    strcpy(cptr, "--plugin");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "rail");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "--data");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "||WordPad");
    g_mrdpview->argv[i++] = cptr;

    cptr = (char *)malloc(80);
    strcpy(cptr, "--");
    g_mrdpview->argv[i++] = cptr;
#endif
    
    cptr = (char *)malloc(80);
    strcpy(cptr, "192.168.1.69:45990");
    g_mrdpview->argv[i++] = cptr;
    
    g_mrdpview->argc = i;
    
#else
    // MacFreeRDP was not run in Xcode
    i = 0;
    
    // in RemoteApp (RAIL) mode, we connect to RDP server at max screen resolution;
    // in order to achieve this, we need to modify the cmd line args entered by the user;
    
    if (g_mrdpview->isRemoteApp) {
        BOOL gotGeometry = NO;
        
        // get dimensions of screen that has keyboard focus;
        // we use these dimensions when connecting to RDP server
        inst->settings->DesktopWidth = [[NSScreen mainScreen] frame].size.width;
        inst->settings->DesktopHeight = [[NSScreen mainScreen] frame].size.height - g_mrdpview->titleBarHeight;
        g_mrdpview->width = inst->settings->DesktopWidth;
        g_mrdpview->height = inst->settings->DesktopHeight;
        
        for (NSString * str in args)
        {
            if (gotGeometry) {
                gotGeometry = NO;
                cptr = (char *) malloc(20);
                sprintf(cptr, "%dx%d", g_mrdpview->width, g_mrdpview->height);  
                g_mrdpview->argv[i++] = cptr;
                continue;
            }
    
            len = (int) ([str length] + 1);
            cptr = (char *) malloc(len);
            strcpy(cptr, [str UTF8String]);
            g_mrdpview->argv[i++] = cptr;

            // -g is the cmd line arg to specify screen resolution/geometry
            if ([str compare:@"-g"] == NSOrderedSame) {
                gotGeometry = YES;
            }
        }
    }
    else {
        for (NSString * str in args)
        {
            len = (int) ([str length] + 1);
            cptr = (char *) malloc(len);
            strcpy(cptr, [str UTF8String]);
            g_mrdpview->argv[i++] = cptr;
        }
    }
#endif
	
	inst->context->argc = g_mrdpview->argc;
	inst->context->argv = g_mrdpview->argv;
	
	status = freerdp_client_parse_command_line_arguments(inst->context->argc, inst->context->argv, inst->settings);
	
	if (status < 0)
	{
		[NSApp terminate:nil];
		return TRUE;
	}
	
	freerdp_client_load_addins(inst->context->channels, inst->settings);

    [g_mrdpview setViewSize:inst->settings->DesktopWidth :inst->settings->DesktopHeight];

    freerdp_channels_pre_connect(inst->context->channels, inst);
    return TRUE;
}

/** *********************************************************************
 * a callback registered with freerdp_connect() to perform post-connection operations.
 * we get called only if the connection was initialized properly, and will continue 
 * the initialization based on the newly created connection.
 *
 * @param   inst  - pointer to a rdp_freerdp struct
 *
 * @return true on success, false on failure
 *
 ************************************************************************/

BOOL mac_post_connect(freerdp *inst)
{
    uint32     flags;
    rdpPointer rdp_pointer;
    void       *rd_fds[32];
    void       *wr_fds[32];
    int        rd_count = 0;
    int        wr_count = 0;
    int        index;
    int        fds[32];
    
    memset(&rdp_pointer, 0, sizeof(rdpPointer));
    rdp_pointer.size = sizeof(rdpPointer);
    rdp_pointer.New = pointer_new;
    rdp_pointer.Free = pointer_free;
    rdp_pointer.Set = pointer_set;
    rdp_pointer.SetNull = pointer_setNull;
    rdp_pointer.SetDefault = pointer_setDefault;
    
    flags = CLRCONV_ALPHA;
    flags |= CLRBUF_32BPP;
    
    gdi_init(inst, flags, NULL);
    pointer_cache_register_callbacks(inst->update);
    graphics_register_pointer(inst->context->graphics, &rdp_pointer);
    
    // register file descriptors with the RunLoop
    if (!freerdp_get_fds(inst, rd_fds, &rd_count, 0, 0))
    {
        printf("mac_post_connect: freerdp_get_fds() failed!\n");
    }
    
    for (index = 0; index < rd_count; index++)
    {
        fds[index] = (int)(long)rd_fds[index];
    }
    register_fds(fds, rd_count, inst);
    
    // register channel manager file descriptors with the RunLoop
    if (!freerdp_channels_get_fds(inst->context->channels, inst, rd_fds, &rd_count, wr_fds, &wr_count))
    {
        printf("ERROR: freerdp_channels_get_fds() failed\n");
    }
    for (index = 0; index < rd_count; index++)
    {
        fds[index] = (int)(long)rd_fds[index];
    }
    register_channel_fds(fds, rd_count, inst);
    freerdp_channels_post_connect(inst->context->channels, inst);
    
    // setup RAIL (remote app)
    inst->context->rail = rail_new(inst->settings);
    rail_register_update_callbacks(inst->context->rail, inst->update);
    mac_rail_register_callbacks(inst, inst->context->rail);
    
    // setup pasteboard (aka clipboard) for copy operations (write only)
    g_mrdpview->pasteboard_wr = [NSPasteboard generalPasteboard];

    // setup pasteboard for read operations
    g_mrdpview->pasteboard_rd = [NSPasteboard generalPasteboard];
    g_mrdpview->pasteboard_changecount = (int) [g_mrdpview->pasteboard_rd changeCount];
    g_mrdpview->pasteboard_timer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:g_mrdpview selector:@selector(onPasteboardTimerFired:) userInfo:nil repeats:YES];

    // we want to be notified when window resizes
    [[NSNotificationCenter defaultCenter] addObserver:g_mrdpview selector:@selector(windowDidResize:) name:NSWindowDidResizeNotification object:nil];
    
    return TRUE;
}

/** *********************************************************************
 * create a new mouse cursor
 *
 * @param context our context state
 * @param pointer information about the cursor to create
 *
 ************************************************************************/

void pointer_new(rdpContext* context, rdpPointer* pointer)
{
    MRDPCursor *mrdpCursor = [[MRDPCursor alloc] init];
    uint8      *cursor_data;
    
    NSRect rect;
    rect.size.width = pointer->width;
    rect.size.height = pointer->height;
    rect.origin.x = pointer->xPos;
    rect.origin.y = pointer->yPos;

    cursor_data = (uint8 *) malloc(rect.size.width * rect.size.height * 4);
    mrdpCursor->cursor_data = cursor_data;
    
    freerdp_alpha_cursor_convert(cursor_data, pointer->xorMaskData, pointer->andMaskData,
                                 pointer->width, pointer->height, pointer->xorBpp, context->gdi->clrconv);
    
    // TODO if xorBpp is > 24 need to call freerdp_image_swap_color_order
    //         see file df_graphics.c
    
    // store cursor bitmap image in representation - required by NSImage
    NSBitmapImageRep *bmiRep;
    bmiRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:(unsigned char **) &cursor_data
                                                     pixelsWide:rect.size.width
                                                     pixelsHigh:rect.size.height
                                                  bitsPerSample:8
                                                samplesPerPixel:sizeof(struct rgba_data)
                                                       hasAlpha:YES
                                                       isPlanar:NO 
                                                 colorSpaceName:NSDeviceRGBColorSpace 
                                                   bitmapFormat:0
                                                    bytesPerRow:rect.size.width * 4
                                                   bitsPerPixel:0];
    mrdpCursor->bmiRep = bmiRep;
    
    // create an image using above representation
    NSImage *image = [[NSImage alloc] initWithSize:[bmiRep size]];
    [image addRepresentation: bmiRep];
    [image setFlipped:NO];
    mrdpCursor->nsImage = image;
    
    // need hotspot to create cursor
    NSPoint hotSpot;
    hotSpot.x = pointer->xPos;
    hotSpot.y = pointer->yPos;
    
    NSCursor *cursor = [[NSCursor alloc] initWithImage: image hotSpot:hotSpot];
    mrdpCursor->nsCursor = cursor;
    mrdpCursor->pointer = pointer;

    // save cursor for later use in pointer_set()
    NSMutableArray *ma = g_mrdpview->cursors;
    [ma addObject:mrdpCursor];
}  

/** *********************************************************************
 * release resources on specified cursor
 ************************************************************************/

void pointer_free(rdpContext* context, rdpPointer* pointer)
{
    NSMutableArray *ma = g_mrdpview->cursors;
    
    for (MRDPCursor *cursor in ma)
    {
        if (cursor->pointer == pointer) {
            cursor->nsImage = nil;
            cursor->nsCursor = nil;
            cursor->bmiRep = nil;
            free(cursor->cursor_data);
            [ma removeObject:cursor];
            return;
        }
    }
}

/** *********************************************************************
 * set specified cursor as the current cursor
 ************************************************************************/

void pointer_set(rdpContext* context, rdpPointer* pointer)
{
    NSMutableArray *ma = g_mrdpview->cursors;
    
    if (!g_mrdpview->mouseInClientArea)
    {
        return; // not in client area
    }
    
    for (MRDPCursor *cursor in ma)
    {
        if (cursor->pointer == pointer) {
            [cursor->nsCursor set];
            return;
        }
    }
}

/** *********************************************************************
 * do not display any mouse cursor
 ***********************************************************************/

void pointer_setNull(rdpContext* context)
{
}

/** *********************************************************************
 * display default mouse cursor
 ***********************************************************************/

void pointer_setDefault(rdpContext* context)
{
}

/** *********************************************************************
 * create a new context - but all we really need to do is save state info
 ***********************************************************************/

void mac_context_new(freerdp *inst, rdpContext *context)
{
    [g_mrdpview saveStateInfo:inst :context];
    context->channels = freerdp_channels_new();
}

/** *********************************************************************
 * we don't do much over here
 ***********************************************************************/

void mac_context_free(freerdp *inst, rdpContext *context)
{
}

/** *********************************************************************
 * clip drawing surface so nothing is drawn outside specified bounds
 ***********************************************************************/

void mac_set_bounds(rdpContext *context, rdpBounds *bounds)
{
}

/** *********************************************************************
 * we don't do much over here
 ***********************************************************************/

void mac_bitmap_update(rdpContext *context, BITMAP_UPDATE *bitmap)
{
}

/** *********************************************************************
 * we don't do much over here
 ***********************************************************************/

void mac_begin_paint(rdpContext *context)
{
    rdpGdi* gdi = context->gdi;
    gdi->primary->hdc->hwnd->invalid->null = 1;
}

/** *********************************************************************
 * RDP server wants us to draw new data in the view
 ***********************************************************************/

void mac_end_paint(rdpContext* context)
{
    int       i;
    NSRect    drawRect;
    rdpGdi *  gdi;

    if ((context == 0) || (context->gdi == 0))
        return;
    
    if (context->gdi->primary->hdc->hwnd->invalid->null)
        return;
    
    if (context->gdi->drawing != context->gdi->primary)
        return;

    gdi = g_mrdpview->rdp_context->gdi;
    
    if (g_mrdpview->isRemoteApp && g_mrdpview->currentWindow) {
        [[g_mrdpview->currentWindow view] updateDisplay];
        return;
    }
    
    for (i = 0; i < gdi->primary->hdc->hwnd->ninvalid; i++)
    {
        drawRect.origin.x = gdi->primary->hdc->hwnd->cinvalid[i].x;
        drawRect.origin.y = gdi->primary->hdc->hwnd->cinvalid[i].y;
        drawRect.size.width = gdi->primary->hdc->hwnd->cinvalid[i].w;
        drawRect.size.height = gdi->primary->hdc->hwnd->cinvalid[i].h;
        
        convert_color_space(g_mrdpview->pixel_data, (char *) gdi->primary_buffer, &drawRect, g_mrdpview->width, g_mrdpview->height);

        [g_mrdpview setNeedsDisplayInRect:drawRect];
    }
    gdi->primary->hdc->hwnd->ninvalid = 0;
}

/** *********************************************************************
 * called when data is available on a socket
 ***********************************************************************/

void skt_activity_cb(
                     CFSocketRef s,
                     CFSocketCallBackType callbackType,
                     CFDataRef address,
                     const void *data,
                     void *info
                     )
{
    if (!freerdp_check_fds(info)) {
        // lost connection or did not connect
        [NSApp terminate:nil];
    }
}

/** *********************************************************************
 * called when data is available on a virtual channel
 ***********************************************************************/

void channel_activity_cb(
                     CFSocketRef s,
                     CFSocketCallBackType callbackType,
                     CFDataRef address,
                     const void *data,
                     void *info   
                     )
{
    freerdp *inst = (freerdp *) info;
    RDP_EVENT* event;
    
    GOT_HERE;
    
    freerdp_channels_check_fds(inst->context->channels, inst);
    event = freerdp_channels_pop_event(inst->context->channels);
    if (event) {
        switch (event->event_class)
        {
            case RDP_EVENT_CLASS_RAIL:
                mac_process_rail_event(inst, event);
                break;
                
            case RDP_EVENT_CLASS_CLIPRDR:
                process_cliprdr_event(inst, event);
                break;
        }
    }
}

/** *********************************************************************
 * setup callbacks for data availability on sockets
 ***********************************************************************/

int register_fds(int *fds, int count, void *inst)
{
    int i;
    CFSocketRef skt_ref;
    CFSocketContext skt_context = { 0, inst, NULL, NULL, NULL };
    
    for (i = 0; i < count; i++)
    {
        skt_ref = CFSocketCreateWithNative(NULL, fds[i], kCFSocketReadCallBack, skt_activity_cb, &skt_context);
        g_mrdpview->run_loop_src = CFSocketCreateRunLoopSource(NULL, skt_ref, 0);
        CFRunLoopAddSource(CFRunLoopGetCurrent(), g_mrdpview->run_loop_src, kCFRunLoopDefaultMode);
        CFRelease(skt_ref);
    }
    return 0;
}

/** *********************************************************************
 * setup callbacks for data availability on channels 
 ***********************************************************************/

int register_channel_fds(int *fds, int count, void *inst)
{
    int i;
    CFSocketRef skt_ref;
    CFSocketContext skt_context = { 0, inst, NULL, NULL, NULL };
    
    for (i = 0; i < count; i++)
    {
        skt_ref = CFSocketCreateWithNative(NULL, fds[i], kCFSocketReadCallBack, channel_activity_cb, &skt_context);
        g_mrdpview->run_loop_src_channels = CFSocketCreateRunLoopSource(NULL, skt_ref, 0);
        CFRunLoopAddSource(CFRunLoopGetCurrent(), g_mrdpview->run_loop_src_channels, kCFRunLoopDefaultMode);
        CFRelease(skt_ref);
    }
    return 0;
}

/** *********************************************************************
 * called when channel data is available
 ***********************************************************************/

int receive_channel_data(freerdp *inst, int chan_id, uint8 *data, int size, int flags, int total_size)
{
    return freerdp_channels_data(inst, chan_id, data, size, flags, total_size);
}

/** *********************************************************************
 * convert an array containing ARGB data to RGBA
 ***********************************************************************/

void convert_color_space(char *dest, char *src, NSRect* drawRect, int width, int height)
{
    int i;
    int j;
    int x;
    int y;
    int cx;
    int cy;
    int pixel;
    int pixel1;
    int pixel2;
    int* src32;
    int* dst32;

    if ((!dest) || (!src)) {
        return;
    }
    
    x = drawRect->origin.x;
    y = drawRect->origin.y;
    cx = drawRect->size.width;
    cy = drawRect->size.height;

    for (j = 0; j < cy; j++)
    {
        src32 = (int*)(src + ((y + j) * width + x) * 4);
        dst32 = (int*)(dest + ((y + j) * width + x) * 4);
        for (i = 0; i < cx; i++)
        {
            pixel = *src32;
            pixel1 = (pixel & 0x00ff0000) >> 16;
            pixel2 = (pixel & 0x000000ff) << 16;
            pixel = (pixel & 0xff00ff00) | pixel1 | pixel2;
            *dst32 = pixel;
            src32++;
            dst32++;
        }
    }

    drawRect->origin.y = height - drawRect->origin.y - drawRect->size.height;
}

/** 
 * Used to load plugins based on the commandline parameters.
 * This function is provided as a parameter to freerdp_parse_args(), that will call it
 * each time a plugin name is found on the command line.
 * This function just calls freerdp_channels_load_plugin() for the given plugin, and always returns 1.
 * 
 * @param settings
 * @param name
 * @param plugin_data
 * @param user_data
 * 
 * @return 1
 */

int process_plugin_args(rdpSettings* settings, const char* name, RDP_PLUGIN_DATA* plugin_data, void* user_data)
{
    rdpChannels* channels = (rdpChannels*) user_data;
    
    freerdp_channels_load_plugin(channels, settings, name, plugin_data);
    return 1;
}

/*
 * stuff related to clipboard redirection
 */

/**
 * remote system has requested clipboard data from local system
 */

void cliprdr_process_cb_data_request_event(freerdp *inst)
{
    RDP_CB_DATA_RESPONSE_EVENT *event;
    NSArray                    *types;
    int                        len;
    
    event = (RDP_CB_DATA_RESPONSE_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
                                                          RDP_EVENT_TYPE_CB_DATA_RESPONSE, NULL, NULL);
    types = [NSArray arrayWithObject:NSStringPboardType];
    NSString *str = [g_mrdpview->pasteboard_rd availableTypeFromArray:types];
    if (str == nil)
    {
        event->data = NULL;
        event->size = 0;
    }
    else 
    {
        NSString *data = [g_mrdpview->pasteboard_rd stringForType:NSStringPboardType];
        len = (int) ([data length] * 2 + 2);
        event->data = malloc(len);
        [data getCString:(char *) event->data maxLength:len encoding:NSUnicodeStringEncoding];
        event->size = len; 
    }
    freerdp_channels_send_event(inst->context->channels, (RDP_EVENT*) event);
}

void cliprdr_send_data_request(freerdp *inst, uint32 format)
{
    RDP_CB_DATA_REQUEST_EVENT* event;
    
    event = (RDP_CB_DATA_REQUEST_EVENT *) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
                    RDP_EVENT_TYPE_CB_DATA_REQUEST, NULL, NULL);
    event->format = format;
    freerdp_channels_send_event(inst->context->channels, (RDP_EVENT*) event);
}

/**
 * at the moment, only the following formats are supported
 *    CB_FORMAT_TEXT
 *    CB_FORMAT_UNICODETEXT
 */

void cliprdr_process_cb_data_response_event(freerdp *inst, RDP_CB_DATA_RESPONSE_EVENT *event)
{
    NSString *str;
    NSArray  *types;
    
    if (event->size == 0) {
         return;
    }
    
    if (g_mrdpview->pasteboard_format == CB_FORMAT_TEXT || g_mrdpview->pasteboard_format == CB_FORMAT_UNICODETEXT) {
        str = [[NSString alloc] initWithCharacters:(unichar *) event->data length:event->size / 2];
        types = [[NSArray alloc] initWithObjects:NSStringPboardType, nil];
        [g_mrdpview->pasteboard_wr declareTypes:types owner:g_mrdpview];
        [g_mrdpview->pasteboard_wr setString:str forType:NSStringPboardType];        
    }
}

void cliprdr_process_cb_monitor_ready_event(freerdp* inst)
{
    RDP_EVENT* event;
    RDP_CB_FORMAT_LIST_EVENT* format_list_event;
    
    event = freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR, RDP_EVENT_TYPE_CB_FORMAT_LIST, NULL, NULL);
    
    format_list_event = (RDP_CB_FORMAT_LIST_EVENT*)event;
    format_list_event->num_formats = 0;
    
    freerdp_channels_send_event(inst->context->channels, event);
}

/**
 * list of supported clipboard formats; currently only the following are supported
 *    CB_FORMAT_TEXT
 *    CB_FORMAT_UNICODETEXT
 */

void cliprdr_process_cb_format_list_event(freerdp *inst, RDP_CB_FORMAT_LIST_EVENT* event)
{
    int i;
    
    if (event->num_formats == 0) {
        return;
    }
    
    for (i = 0; i < event->num_formats; i++)
    {
        switch (event->formats[i])
        {
            case CB_FORMAT_RAW:
                printf("CB_FORMAT_RAW: not yet supported\n");
                break;
                
            case CB_FORMAT_TEXT:
            case CB_FORMAT_UNICODETEXT:
                g_mrdpview->pasteboard_format = CB_FORMAT_UNICODETEXT;
                cliprdr_send_data_request(inst, CB_FORMAT_UNICODETEXT);
                return;
                break;
                
            case CB_FORMAT_DIB:
                printf("CB_FORMAT_DIB: not yet supported\n");
                break;
                
            case CB_FORMAT_HTML:
                printf("CB_FORMAT_HTML\n");
                break;
                
            case CB_FORMAT_PNG:
                printf("CB_FORMAT_PNG: not yet supported\n");
                break;
                
            case CB_FORMAT_JPEG:
                printf("CB_FORMAT_JPEG: not yet supported\n");
                break;
                
            case CB_FORMAT_GIF:
                printf("CB_FORMAT_GIF: not yet supported\n");
                break;
        }
    }
}

void process_cliprdr_event(freerdp *inst, RDP_EVENT *event)
{
    if (event) {
        switch (event->event_type) 
        {
            // Monitor Ready PDU is sent by server to indicate that it has been
            // inited and is ready. This PDU is transmitted by the server after it has sent
            // Clipboard Capabilities PDU
            case RDP_EVENT_TYPE_CB_MONITOR_READY:
                cliprdr_process_cb_monitor_ready_event(inst);
                break;
                
            // The Format List PDU is sent either by the client or the server when its
            // local system clipboard is updated with new clipboard data. This PDU
            // contains the Clipboard Format ID and name pairs of the new Clipboard
            // Formats on the clipboard
            case RDP_EVENT_TYPE_CB_FORMAT_LIST:
                cliprdr_process_cb_format_list_event(inst, (RDP_CB_FORMAT_LIST_EVENT*) event);
                break;
                
            // The Format Data Request PDU is sent by the receipient of the Format List PDU.
            // It is used to request the data for one of the formats that was listed in the
            // Format List PDU
            case RDP_EVENT_TYPE_CB_DATA_REQUEST:
                cliprdr_process_cb_data_request_event(inst);
                break;
                
            // The Format Data Response PDU is sent as a reply to the Format Data Request PDU.
            // It is used to indicate whether processing of the Format Data Request PDU
            // was successful. If the processing was successful, the Format Data Response PDU
            // includes the contents of the requested clipboard data
            case RDP_EVENT_TYPE_CB_DATA_RESPONSE:
                cliprdr_process_cb_data_response_event(inst, (RDP_CB_DATA_RESPONSE_EVENT*) event);
                break;
                
            default:
                printf("process_cliprdr_event: unknown event type %d\n", event->event_type);
                break;
        }
        freerdp_event_free(event);
    }
}

void cliprdr_send_supported_format_list(freerdp *inst)
{
    RDP_CB_FORMAT_LIST_EVENT* event;
    
    event = (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
                                                          RDP_EVENT_TYPE_CB_FORMAT_LIST, NULL, NULL);
    
    event->formats = (uint32 *) malloc(sizeof(uint32) * 1);
    event->num_formats = 1;
    event->formats[0] = CB_FORMAT_UNICODETEXT;
    freerdp_channels_send_event(inst->context->channels, (RDP_EVENT*) event);
}

/****************************************************************************************
 *                                                                                      *
 *                                                                                      *
 *                   RemoteApp (RAIL) related stuff goes here                           *
 *                                                                                      *
 *                                                                                      *
 ****************************************************************************************/ 

void mac_process_rail_event(freerdp *inst, RDP_EVENT *event)
{
    switch (event->event_type)
    {
        case RDP_EVENT_TYPE_RAIL_CHANNEL_GET_SYSPARAMS:
            mac_process_rail_get_sysparams_event(inst->context->channels, event);
            break;
        
        case RDP_EVENT_TYPE_RAIL_CHANNEL_EXEC_RESULTS:
            mac_process_rail_exec_result_event(inst->context->channels, event);
            break;
        
        case RDP_EVENT_TYPE_RAIL_CHANNEL_SERVER_SYSPARAM:
            mac_process_rail_server_sysparam_event(inst->context->channels, event);
            break;
        
        case RDP_EVENT_TYPE_RAIL_CHANNEL_SERVER_MINMAXINFO:
            mac_process_rail_server_minmaxinfo_event(inst->context->channels, event);
            break;
        
        case RDP_EVENT_TYPE_RAIL_CHANNEL_SERVER_LOCALMOVESIZE:
            mac_process_rail_server_localmovesize_event(inst, event);
            break;
        
        case RDP_EVENT_TYPE_RAIL_CHANNEL_APPID_RESP:
            GOT_HERE;
            //xf_process_rail_appid_resp_event(xfi, channels, event);
            break;
        
        case RDP_EVENT_TYPE_RAIL_CHANNEL_LANGBARINFO:
            GOT_HERE;
            //xf_process_rail_langbarinfo_event(xfi, channels, event);
            break;
    }
}

void mac_rail_CreateWindow(rdpRail *rail, rdpWindow *window)
{
    BOOL centerWindow = NO;
    BOOL moveWindow = NO;
    BOOL displayAsModal = NO;
    NSMutableArray * ma = g_mrdpview->windows;

    // make sure window fits resolution
    if (window->windowWidth > g_mrdpview->width)
        window->windowWidth = g_mrdpview->width;
    
    if (window->windowHeight > g_mrdpview->height)
        window->windowHeight = g_mrdpview->height;
    
    // center main window, which is the first to be created
    if ([ma count] == 0) {
        centerWindow = YES;
        moveWindow = YES;
    }
    
    if ((window->extendedStyle & WS_EX_TOPMOST) || (window->extendedStyle & WS_EX_TOOLWINDOW)) {
        [g_mrdpview->currentWindow view]->skipMoveWindowOnce = TRUE;
        moveWindow = YES;
    }
    else if (window->style & WS_POPUP) {
        centerWindow = YES;
        moveWindow = YES;
    }
    else {
    }
    
    // create NSWindow
    NSRect winFrame = NSMakeRect(window->windowOffsetX, window->windowOffsetY,
                                 window->windowWidth, window->windowHeight);
    if (centerWindow)
        apple_center_window(&winFrame);
    
    MRDPRailWindow * newWindow = [[MRDPRailWindow alloc] initWithContentRect:winFrame 
                                                       styleMask:NSTitledWindowMask | NSResizableWindowMask
                                                         backing:NSBackingStoreBuffered 
                                                           defer:NO];

    // this does not work if specified during window creation in above code
    [newWindow setStyleMask:NSBorderlessWindowMask];
    
    if (moveWindow) {
        // let RDP server know that window has moved
        RAIL_WINDOW_MOVE_ORDER windowMove;
        apple_to_windowMove(&winFrame, &windowMove);
        windowMove.windowId = window->windowId;
        mac_send_rail_client_event(g_mrdpview->rdp_instance->context->channels, RDP_EVENT_TYPE_RAIL_CLIENT_WINDOW_MOVE, &windowMove);
    }
    
    // create MRDPRailView and add to above window
    NSRect viewFrame = NSMakeRect(window->clientOffsetX, window->clientOffsetY,
                                  window->clientAreaWidth, window->clientAreaHeight);
    
    MRDPRailView * newView = [[MRDPRailView alloc] initWithFrame:viewFrame];
    [newView setRdpInstance:g_mrdpview->rdp_instance width:g_mrdpview->width andHeight:g_mrdpview->height windowID: window->windowId];
    [newWindow setContentView:newView];
    
    // save new window
    MRDPWindow * mrdpWindow = [[MRDPWindow alloc] init];
    [mrdpWindow setWindowID:window->windowId];
    [mrdpWindow setWindow:newWindow];
    [mrdpWindow setView:newView];
    
    // add to list of windows
    [ma addObject:mrdpWindow];
    
    // make new window current
    g_mrdpview->currentWindow = mrdpWindow;
    
    if (displayAsModal) {
        // display as modal window
        NSModalSession session = [NSApp beginModalSessionForWindow:newWindow];
        while (1)
        {
            if ([NSApp runModalSession:session] != NSRunContinuesResponse)
                break;
        }
        [NSApp endModalSession:session];
    }
    else {
        [newWindow makeKeyAndOrderFront:NSApp];
        [[g_mrdpview window] resignFirstResponder];
        [g_mrdpview resignFirstResponder];
        [[g_mrdpview window] setNextResponder:newWindow];
    }
    
    return;
}

void mac_rail_MoveWindow(rdpRail *rail, rdpWindow *window)
{
    if (g_mrdpview->currentWindow) {
        rail_MoveWindow(rail, window);
        return;
    }
}

void mac_rail_ShowWindow(rdpRail *rail, rdpWindow *window, uint8 state)
{
}

void mac_rail_SetWindowText(rdpRail *rail, rdpWindow *window)
{
}

void mac_rail_SetWindowIcon(rdpRail *rail, rdpWindow *window, rdpIcon *icon)
{
}

void mac_rail_SetWindowRects(rdpRail *rail, rdpWindow *window)
{
}

void mac_rail_SetWindowVisibilityRects(rdpRail *rail, rdpWindow *window)
{
}

/** *********************************************************************
 * destroy window created in mac_rail_CreateWindow()
 ***********************************************************************/

void mac_rail_DestroyWindow(rdpRail *rail, rdpWindow *window)
{
    int count = 0;
    
    for (MRDPWindow * win in g_mrdpview->windows)
    {
        if ([win windowID] == window->windowId) {
            //[[win window] close];
            [win setView:nil];
            [win setWindow:nil];
            [g_mrdpview->windows removeObject:win];
            count = [g_mrdpview->windows count];
            if (count) {
                g_mrdpview->currentWindow = [g_mrdpview->windows objectAtIndex:count - 1];
                //[[g_mrdpview window] makeKeyAndOrderFront:[g_mrdpview->currentWindow window]];
                [[g_mrdpview->currentWindow window] makeKeyAndOrderFront:NSApp];
            }
            else {
                g_mrdpview->currentWindow = nil;
                // RAIL_TODO [[g_mrdpview window] makeKeyAndOrderFront:[g_mrdpview window]];
                [NSApp terminate:nil];
            }
            return;
        }
    }
}

void mac_rail_register_callbacks(freerdp *inst, rdpRail *rail)
{
    GOT_HERE;
    
    rail->extra = (void *) inst;
    rail->rail_CreateWindow = mac_rail_CreateWindow;
    rail->rail_MoveWindow = mac_rail_MoveWindow;
    rail->rail_ShowWindow = mac_rail_ShowWindow;
    rail->rail_SetWindowText = mac_rail_SetWindowText;
    rail->rail_SetWindowIcon = mac_rail_SetWindowIcon;
    rail->rail_SetWindowRects = mac_rail_SetWindowRects;
    rail->rail_SetWindowVisibilityRects = mac_rail_SetWindowVisibilityRects;
    rail->rail_DestroyWindow = mac_rail_DestroyWindow;
}

/** *********************************************************************
 * set work area size, which is the portion of the screen not obscured
 * by the system taskbar or by application desktop toolbars
 ************************************************************************/

void mac_process_rail_get_sysparams_event(rdpChannels *channels, RDP_EVENT *event)
{
    RAIL_SYSPARAM_ORDER * sysparam;
    sysparam = (RAIL_SYSPARAM_ORDER *) event->user_data;

    sysparam->workArea.left = 0;
    sysparam->workArea.top = 22;
    sysparam->workArea.right = g_mrdpview->width;
    sysparam->workArea.bottom = g_mrdpview->height - 22;
    
    sysparam->taskbarPos.left = 0;
    sysparam->taskbarPos.top = 0;
    sysparam->taskbarPos.right = 0;
    sysparam->taskbarPos.bottom = 0;
    
    sysparam->dragFullWindows =  FALSE;
    
    mac_send_rail_client_event(channels, RDP_EVENT_TYPE_RAIL_CLIENT_SET_SYSPARAMS, sysparam);
}

void mac_process_rail_server_sysparam_event(rdpChannels* channels, RDP_EVENT* event)
{
    RAIL_SYSPARAM_ORDER* sysparam = (RAIL_SYSPARAM_ORDER*) event->user_data;
    
    GOT_HERE;
    
    switch (sysparam->param)
    {
        case SPI_SET_SCREEN_SAVE_ACTIVE:
            break;
            
        case SPI_SET_SCREEN_SAVE_SECURE:
            break;
    }
}

/** *********************************************************************
 * server returned result of exec'ing remote app on server
 ************************************************************************/

void mac_process_rail_exec_result_event(rdpChannels* channels, RDP_EVENT* event)
{
    RAIL_EXEC_RESULT_ORDER* exec_result;
    
    GOT_HERE;
    
    exec_result = (RAIL_EXEC_RESULT_ORDER*) event->user_data;
    
    if (exec_result->execResult != RAIL_EXEC_S_OK) {
        printf("RAIL exec error: execResult=%s NtError=0x%X\n",
               error_code_names[exec_result->execResult], exec_result->rawResult);
        g_mrdpview->is_connected = FALSE;
        [g_mrdpview rdpRemoteAppError];
    }
    else {
        mac_rail_enable_remoteapp_mode();
    }    
}

/** *********************************************************************
 * sent by server when a window move or resize on the server is being
 * initiated. this PDU contains info about the min and max extents
 * to which the window can be moved or sized
 ************************************************************************/

void mac_process_rail_server_minmaxinfo_event(rdpChannels* channels, RDP_EVENT* event)
{
#if 0
	    RAIL_MINMAXINFO_ORDER * minmax = (RAIL_MINMAXINFO_ORDER*) event->user_data;
    printf("minmax_info: maxPosX=%d maxPosY=%d maxWidth=%d maxHeight=%d minTrackWidth=%d minTrackHeight=%d maxTrackWidth=%d maxTrackHeight=%d\n",
           minmax->maxPosX, minmax->maxPosY, minmax->maxWidth, minmax->maxHeight,
           minmax->minTrackWidth, minmax->minTrackHeight, minmax->maxTrackWidth, minmax->maxTrackHeight);
#endif
}

/** *********************************************************************
 * sent by the server when a window on the server is beginning a move or
 * resize; use this info to initiate a local move or resize of the
 * corresponding local window
 ************************************************************************/

void mac_process_rail_server_localmovesize_event(freerdp *inst, RDP_EVENT *event)
{
    RAIL_LOCALMOVESIZE_ORDER * moveSize = (RAIL_LOCALMOVESIZE_ORDER *) event->user_data;
    RAIL_WINDOW_MOVE_ORDER windowMove;
 
    switch (moveSize->moveSizeType) {
        case RAIL_WMSZ_LEFT:
            printf("!!!! RAIL_WMSZ_LEFT\n");
            break;
            
        case RAIL_WMSZ_RIGHT:
            printf("!!!! RAIL_WMSZ_RIGHT\n");
            break;
            
        case RAIL_WMSZ_TOP:
            printf("!!!! RAIL_WMSZ_TOP\n");
            break;
            
        case RAIL_WMSZ_TOPLEFT:
            printf("!!!! RAIL_WMSZ_TOPLEFT\n");
            break;
            
        case RAIL_WMSZ_TOPRIGHT:
            printf("!!!! RAIL_WMSZ_TOPRIGHT\n");
            break;
            
        case RAIL_WMSZ_BOTTOM:
            printf("!!!! RAIL_WMSZ_BOTTOM\n");
            break;
            
        case RAIL_WMSZ_BOTTOMLEFT:
            printf("!!!! RAIL_WMSZ_BOTTOMLEFT\n");
            break;
            
        case RAIL_WMSZ_BOTTOMRIGHT:
            printf("!!!! RAIL_WMSZ_BOTTOMRIGHT\n");
            break;
            
        case RAIL_WMSZ_MOVE:
            if (moveSize->isMoveSizeStart) {
                // local window move in progress
                [g_mrdpview->currentWindow view]->isMoveSizeInProgress = YES;
                [g_mrdpview->currentWindow view]->saveInitialDragLoc = YES;

                return;
            }

            // local move has completed
            [g_mrdpview->currentWindow view]->isMoveSizeInProgress = NO;
            [g_mrdpview->currentWindow view]->saveInitialDragLoc = NO;

            // let RDP server know where this window is located
            mac_send_rail_client_event(inst->context->channels, RDP_EVENT_TYPE_RAIL_CLIENT_WINDOW_MOVE, &windowMove);

            // the event we just sent will cause an extra MoveWindow() to be invoked which we need to ignore
            [g_mrdpview->currentWindow view]->skipMoveWindowOnce = YES;
            
            break;
            
        case RAIL_WMSZ_KEYMOVE:
            printf("!!!! RAIL_WMSZ_KEYMOVE\n");
            break;
            
        case RAIL_WMSZ_KEYSIZE:
            printf("!!!! RAIL_WMSZ_KEYSIZE\n");
            break;
            
        default:
            break;
    }
    return;
}

void mac_send_rail_client_event(rdpChannels *channels, uint16 event_type, void *param)
{
    RDP_EVENT *out_event = NULL;
    void *payload = NULL;
    
    GOT_HERE;
    
    payload = rail_clone_order(event_type, param);
    if (payload != NULL) {
        out_event = freerdp_event_new(RDP_EVENT_CLASS_RAIL, event_type,
                                      mac_on_free_rail_client_event, payload);
        freerdp_channels_send_event(channels, out_event);
    }
}

void mac_on_free_rail_client_event(RDP_EVENT* event)
{
    GOT_HERE;
    
    if (event->event_class == RDP_EVENT_CLASS_RAIL)
    {
        rail_free_cloned_order(event->event_type, event->user_data);
    }
}

void mac_rail_enable_remoteapp_mode()
{
    GOT_HERE;
    
    if (!g_mrdpview->isRemoteApp)
        g_mrdpview->isRemoteApp = TRUE;
}

/**
 * given a rect with 0,0 at the bottom left (apple cords)
 * convert it to a rect with 0,0 at the top left (windows cords)
 */

void apple_to_windows_cords(NSRect * r)
{
    r->origin.y = g_mrdpview->height - (r->origin.y + r->size.height);
}

/**
 * given a rect with 0,0 at the top left (windows cords)
 * convert it to a rect with 0,0 at the bottom left (apple cords)
 */

void windows_to_apple_cords(NSRect * r)
{
    r->origin.y = g_mrdpview->height - (r->origin.y + r->size.height);
}

void apple_center_window(NSRect * r)
{
    r->origin.x = (g_mrdpview->width  - r->size.width) / 2;
    r->origin.y = (g_mrdpview->height - r->size.height) / 2;
}

void apple_to_windowMove(NSRect * r, RAIL_WINDOW_MOVE_ORDER * windowMove)
{
    windowMove->left = (uint16) r->origin.x;                                         // x-cord of top left corner
    windowMove->top = (uint16) g_mrdpview->height - (r->origin.y + r->size.height);  // y-cord of top left corner
    windowMove->right = (uint16) (windowMove->left + r->size.width);                 // x-cord of bottom right corner
    windowMove->bottom = (uint16) (windowMove->top + r->size.height);                // y-cord of bottom right corner
}

@end