/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2011 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

#include "SDL_events.h"

#include "SDL_cocoavideo.h"

#include "../../events/SDL_mouse_c.h"

static SDL_Cursor *

Cocoa_CreateDefaultCursor()

{

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    NSCursor *nscursor;

    SDL_Cursor *cursor = NULL;

    nscursor = [NSCursor arrowCursor];

    if (nscursor) {

        cursor = SDL_calloc(1, sizeof(*cursor));

        if (cursor) {

            cursor->driverdata = nscursor;

            [nscursor retain];

        }

    }

    [pool release];

    return cursor;

}

static SDL_Cursor *

Cocoa_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)

{

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    NSImage *nsimage;

    NSCursor *nscursor = NULL;

    SDL_Cursor *cursor = NULL;

    nsimage = Cocoa_CreateImage(surface);

    if (nsimage) {

        nscursor = [[NSCursor alloc] initWithImage: nsimage hotSpot: NSMakePoint(hot_x, hot_y)];

    }

    if (nscursor) {

        cursor = SDL_calloc(1, sizeof(*cursor));

        if (cursor) {

            cursor->driverdata = nscursor;

        }

    }

    [pool release];

    return cursor;

}

static void

Cocoa_FreeCursor(SDL_Cursor * cursor)

{

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    NSCursor *nscursor = (NSCursor *)cursor->driverdata;

    [nscursor release];

    [pool release];

}

static int

Cocoa_ShowCursor(SDL_Cursor * cursor)

{

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    if (SDL_GetMouseFocus()) {

        if (cursor) {

            [NSCursor unhide];

        } else {

            [NSCursor hide];

        }

    }

    [pool release];

    return 0;

}

static void

Cocoa_WarpMouse(SDL_Window * window, int x, int y)

{

    CGPoint point;

    point.x = (CGFloat)window->x + x;

    point.y = (CGFloat)window->y + y;

    CGWarpMouseCursorPosition(point);

}

void

Cocoa_InitMouse(_THIS)

{

    SDL_Mouse *mouse = SDL_GetMouse();

    SDL_Cursor *cursor;

    mouse->CreateCursor = Cocoa_CreateCursor;

    mouse->ShowCursor = Cocoa_ShowCursor;

    mouse->WarpMouse = Cocoa_WarpMouse;

    mouse->FreeCursor = Cocoa_FreeCursor;

    cursor = Cocoa_CreateDefaultCursor();

    mouse->cursors = mouse->cur_cursor = cursor;

}

static int

ConvertMouseButtonToSDL(int button)

{

    switch (button)

    {

        case 0:

            return(SDL_BUTTON_LEFT);   /* 1 */

        case 1:

            return(SDL_BUTTON_RIGHT);  /* 3 */

        case 2:

            return(SDL_BUTTON_MIDDLE); /* 2 */

    }

    return button+1;

}

void

Cocoa_HandleMouseEvent(_THIS, NSEvent *event)

{

    /* We're correctly using views even in fullscreen mode now */

}

void

Cocoa_HandleMouseWheel(SDL_Window *window, NSEvent *event)

{

    float x = [event deltaX];

    float y = [event deltaY];

    if (x > 0) {

        x += 0.9f;

    } else if (x < 0) {

        x -= 0.9f;

    }

    if (y > 0) {

        y += 0.9f;

    } else if (y < 0) {

        y -= 0.9f;

    }

    SDL_SendMouseWheel(window, (int)x, (int)y);

}

void

Cocoa_QuitMouse(_THIS)

{

}

/* vi: set ts=4 sw=4 expandtab: */