#ifdef GUI_SDL

#include "configdialog_sdl.h"

#include <stdarg.h>
#include <string.h>

#include "SDL.h"
#include "SDL_thread.h"
#include "SDL_ttf.h"

#include "pad.h"    // pad image
#include "arial.ttf.h"  // arial font
#define FONT_SIZEPT 15

#define SCREEN_W    640
#define SCREEN_H    480

// callback structure
typedef struct
{
    void (*callback)(int _arg);
    int arg;
    int x;
    int y;
    int w;
    int h;
} SCallback;

// extern functions
extern void read_configuration( void ); // from plugin.c
extern int write_configuration( void ); // from plugin.c

// colors
static Uint32 u32black, u32gray, u32dark_gray, u32gray_border, u32white;
static SDL_Color black       = { 0x44, 0x44, 0x44, 0 };
static SDL_Color gray        = { 0xEE, 0xEE, 0xEE, 0 };
static SDL_Color dark_gray   = { 0xDF, 0xDF, 0xDF, 0 };
static SDL_Color gray_border = { 0x84, 0x84, 0x84, 0 };
static SDL_Color white       = { 0xFF, 0xFF, 0xFF, 0 };

// button names
static const char *button_names[] = {
    "DPad R",   // R_DPAD
    "DPad L",   // L_DPAD
    "DPad D",   // D_DPAD
    "DPad U",   // U_DPAD
    "Start",    // START_BUTTON
    "Z Trig",   // Z_TRIG
    "B Button", // B_BUTTON
    "A Button", // A_BUTTON
    "C Button R",   // R_CBUTTON
    "C Button L",   // L_CBUTTON
    "C Button D",   // D_CBUTTON
    "C Button U",   // U_CBUTTON
    "R Trig",   // R_TRIG
    "L Trig",   // L_TRIG
    "Mempak switch",
    "Rumblepak switch",
    "Y Axis",   // Y_AXIS
    "X Axis"    // X_AXIS
};

// SDL axis names
static char axis_names[] = {
    'X', 'Y', 'Z', 'U', 'V', 'W'
};

// globals
static int keep_looping;    // set this to 0 to hide the config dialog
static SDL_Surface *screen = NULL;
static SDL_Thread  *thread = NULL;
static TTF_Font    *font   = NULL;
static SDL_Surface *pad    = NULL;
static SDL_Joystick *joys[8] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
static int num_joys = 0;
static int okHeld;
static int cancelHeld;

static int cont = 0;            // selected controller to configure
static SController config[4];   // configuration (copy)
static SController *orig_cont;  // original controllers from plugin.c (to save configuration)

// callback functions
static void controller_tab_clicked( int _arg );
static void button_clicked( int _arg );
static void checkbutton_clicked( int _arg );
static void device_clicked( int _arg );
static void pad_button_clicked( int _arg );

// callbacks
static SCallback callback[] = {
    { controller_tab_clicked, 0,  10, 10, 155, 20 },
    { controller_tab_clicked, 1, 165, 10, 155, 20 },
    { controller_tab_clicked, 2, 320, 10, 155, 20 },
    { controller_tab_clicked, 3, 475, 10, 155, 20 },

    { button_clicked, 0, 150, 445, 90, 25 },            // ok
    { button_clicked, 1, 380, 445, 90, 25 },            // cancel

    { checkbutton_clicked, 0,  20, 45, 90, 25 },        // plugged
    { checkbutton_clicked, 1, 120, 45, 100, 25 },       // plugin

    { device_clicked, 0, 360, 45, 260, 25 },            // device

    { pad_button_clicked, R_DPAD,       110, 245, 50, 20 },
    { pad_button_clicked, L_DPAD,       110, 195, 50, 20 },
    { pad_button_clicked, D_DPAD,       110, 220, 50, 20 },
    { pad_button_clicked, U_DPAD,       110, 170, 50, 20 },
    { pad_button_clicked, START_BUTTON, 300,  65, 40, 20 },
    { pad_button_clicked, Z_TRIG,       120, 290, 50, 20 },
    { pad_button_clicked, B_BUTTON,     475, 230, 70, 20 },
    { pad_button_clicked, A_BUTTON,     475, 325, 70, 20 },
    { pad_button_clicked, L_CBUTTON,    475, 130, 80, 20 },
    { pad_button_clicked, U_CBUTTON,    475, 155, 80, 20 },
    { pad_button_clicked, R_CBUTTON,    475, 180, 80, 20 },
    { pad_button_clicked, D_CBUTTON,    475, 205, 80, 20 },
    { pad_button_clicked, R_TRIG,       395, 105, 50, 20 },
    { pad_button_clicked, L_TRIG,       155, 105, 50, 20 },
    { pad_button_clicked, MEMPAK,       110, 350, 150, 20 },
    { pad_button_clicked, RUMBLEPAK,    110, 375, 150, 20 },
    { pad_button_clicked, Y_AXIS,       220, 398, 50, 20 },
    { pad_button_clicked, X_AXIS,       280, 398, 50, 20 },
    { checkbutton_clicked, 2,       340, 398, 110, 25 },        // enable mouse

    { NULL, 0, 0, 0, 0, 0 }
};

// render text
static inline SDL_Surface *
render_text( SDL_Color fg, SDL_Color bg, const char *fmt, ... )
{
    va_list ap;
    char buf[2049];

    va_start( ap, fmt );
    vsnprintf( buf, 2048, fmt, ap );
    va_end( ap );

    if( *buf == '\0' )
        return NULL;

    return( TTF_RenderText_Shaded( font, buf, fg, bg ) );
}

// write text
static inline void
write_text( SDL_Surface *dst, int x, int y, SDL_Color fg, SDL_Color bg, const char *fmt, ... )
{
    SDL_Surface *text;
    SDL_Rect dstrect;
    memset(&dstrect,0,sizeof(SDL_Rect));
    va_list ap;
    char buf[2049];

    va_start( ap, fmt );
    vsnprintf( buf, 2048, fmt, ap );
    va_end( ap );

    if( *buf == '\0' )
        return;

    text = render_text( fg, bg, buf );
    if( text == NULL )
    {
        fprintf( stderr, "["PLUGIN_NAME"]: Couldn't render text: %s\n", SDL_GetError() );
        return;
    }

    dstrect.x = x;
    dstrect.y = y;
    dstrect.w = text->w;
    dstrect.h = text->h;
    SDL_BlitSurface( text, NULL, dst, &dstrect );
    SDL_FreeSurface( text );
}

// controller tab clicked
static void
controller_tab_clicked( int _arg )
{
#ifdef _DEBUG
    printf( "controller_tab_clicked(): controller = %d\n", _arg );
#endif
    cont = _arg;
}

// button clicked (ok/cancel)
static void
button_clicked( int _arg )
{

    if( _arg == 0 )
    {
#ifdef _DEBUG
        printf( "OK clicked!\n" );
#endif
        okHeld = 1;
    }
    else if( _arg == 1 )
    {
#ifdef _DEBUG
        printf( "Cancel clicked!\n" );
#endif
        cancelHeld = 1;
    }

    // close dialog
    //keep_looping = 0;
}

static void
button_released()
{
    int i;
    if(okHeld)
    {
        okHeld = 0;
        // save configuration
        for( i = 0; i < 4; i++ )
        {
            orig_cont[i].device = config[i].device;
            orig_cont[i].mouse = config[i].mouse;
            memcpy( orig_cont[i].axis, config[i].axis, sizeof( SAxisMap ) * 2 );
            memcpy( orig_cont[i].button, config[i].button, sizeof( SButtonMap ) * 16 );
            memcpy( &orig_cont[i].control, &config[i].control, sizeof( CONTROL ) );
        }
        write_configuration();
        
        keep_looping = 0;
    }
    else
    {
        if(cancelHeld)
        {
            cancelHeld = 0;
            keep_looping = 0;
        }
    }
}

// plugged/mempak checkbutton clicked
static void
checkbutton_clicked( int _arg )
{
    if( _arg == 0 )
    {
        config[cont].control.Present ^= 1;
    }
    else if( _arg == 1 )
    {
        if( config[cont].control.Plugin == PLUGIN_RAW )
            config[cont].control.Plugin = PLUGIN_NONE;
        else if( config[cont].control.Plugin == PLUGIN_NONE )
            config[cont].control.Plugin = PLUGIN_MEMPAK;
        else
            config[cont].control.Plugin = PLUGIN_RAW;
    }
    else if( _arg == 2 )
    {
        if (config[cont].mouse == 0)
        {
            if (config[0].mouse || config[1].mouse || config[2].mouse || config[3].mouse)
            {
                // error
            }
        }
        config[cont].mouse ^= 1;
    }
}

// device box clicked
static void
device_clicked( int _arg )
{
    config[cont].device++;
    if( config[cont].device >= num_joys )
        config[cont].device = DEVICE_NONE;
}

// open/close joysticks
static void
close_joysticks( void )
{
    int i;
    for (i = 0; i < 8; i++)
    {
        if (joys[i] != NULL)
        {
            SDL_JoystickClose(joys[i]);
            joys[i] = NULL;
        }
    }
    num_joys = 0;
}

static void
open_joysticks( void )
{
    int i;

    if (num_joys > 0)
        close_joysticks();

    num_joys = SDL_NumJoysticks();
    if (num_joys > 8)
        num_joys = 8;

    for (i = 0; i < num_joys; i++)
    {
        joys[i] = SDL_JoystickOpen(i);
        if (joys[i] == NULL)
        {
            fprintf( stderr, "["PLUGIN_NAME"]: Couldn't open joystick #%d (%s): %s\n",
                    i + 1, SDL_JoystickName(i), SDL_GetError() );
        }
    }
}

// display a small dialog
static void
display_dialog( const char *caption, const char *line1, const char *line2 )
{
    SDL_Rect dstrect, dstrect2;
    memset(&dstrect,0,sizeof(SDL_Rect));
    memset(&dstrect2,0,sizeof(SDL_Rect));

    // draw the dialog
    dstrect.w = 300; dstrect.h = 100;
    dstrect.x = (screen->w - dstrect.w) / 2;
    dstrect.y = (screen->h - dstrect.h) / 2;
    SDL_FillRect( screen, &dstrect, u32black );
    dstrect2.x = dstrect.x + 2; dstrect2.y = dstrect.y + 2;
    dstrect2.w = dstrect.w - 4;
    dstrect2.h = 25;
    SDL_FillRect( screen, &dstrect2, u32gray );
    write_text( screen, dstrect2.x + 100, dstrect2.y, black, gray, caption );
    dstrect2.y += 26;
    dstrect2.h = dstrect.h - 30;
    SDL_FillRect( screen, &dstrect2, u32gray );
    write_text( screen, dstrect2.x + 10, dstrect2.y, black, gray, line1 );
    write_text( screen, dstrect2.x + 10, dstrect2.y + 20, black, gray, line2 );

    SDL_Flip( screen );
}

// pad button clicked (read assignment)
static void
pad_button_clicked( int _arg )
{
    SDL_Event event;
    int waitevent, axis;
    char text[2000];
    SDLKey key_a = 0;
    int button_a = 0;
    int hat_pos_a = 0;
    int usesaxisforconf = 0;
    int axisused = 0;

    if( _arg == Y_AXIS || _arg == X_AXIS )
    {
        // read key/button a
        sprintf( text, "a key/button for '%s'",
                (_arg == X_AXIS) ? "left" : "up" );
        axis = _arg - Y_AXIS;
        display_dialog( button_names[_arg], "Move any axis or press", text );
        waitevent = 1;
        while( waitevent )
        {
            if( SDL_WaitEvent( &event ) == 0 )
            {
                fprintf( stderr, "["PLUGIN_NAME"]: SDL_WaitEvent(): %s\n", SDL_GetError() );
                return;
            }

            switch( event.type )
            {
            case SDL_KEYDOWN:
                if( event.key.keysym.sym == SDLK_ESCAPE )
                {
                    return;
                }
                key_a = event.key.keysym.sym;
                waitevent = 0;
                break;

            case SDL_JOYAXISMOTION:
                if( event.jaxis.which == config[cont].device )
                {

                    if( event.jaxis.value >= 15000 )
                    {
                        config[cont].axis[axis].axis_a = event.jaxis.axis;
                        config[cont].axis[axis].axis_dir_a = 1;
                        usesaxisforconf = 1;
                        axisused = event.jaxis.axis;
                        waitevent = 0;
                    }
                    else if( event.jaxis.value <= -15000 )
                    {
                        config[cont].axis[axis].axis_a = event.jaxis.axis;
                        config[cont].axis[axis].axis_dir_a = -1;
                        usesaxisforconf = 1;
                        axisused = event.jaxis.axis;
                        waitevent = 0;
                    }
                    
                }
                break;

            case SDL_JOYBUTTONDOWN:
                if( event.jbutton.which == config[cont].device )
                {
                    button_a = event.jbutton.button;
                    waitevent = 0;
                }
                break;

            case SDL_JOYHATMOTION:
                if( event.jhat.which == config[cont].device &&
                    (event.jhat.value == SDL_HAT_UP || event.jhat.value == SDL_HAT_DOWN ||
                    event.jhat.value == SDL_HAT_LEFT || event.jhat.value == SDL_HAT_RIGHT))
                {
                    hat_pos_a = event.jhat.value;
                    waitevent = 0;
                }
                break;
            }
        }

        if(usesaxisforconf)
        {
            sprintf(text, "Axis %i selected.", axisused);
            display_dialog( button_names[_arg], text, "Please center joystick");
            waitevent = 1;
            while(waitevent)
            {
                if( SDL_WaitEvent( &event ) == 0 )
                {
                    fprintf( stderr, "["PLUGIN_NAME"]: SDL_WaitEvent(): %s\n", SDL_GetError() );
                    return;
                }
                if (event.type == SDL_JOYAXISMOTION && event.jaxis.which == config[cont].device)
                {
                    if (event.jaxis.axis == axisused && event.jaxis.value >= -10000 && event.jaxis.value <= 10000)
                        waitevent = 0;
                }
            }
        }
        // read key/button b
        sprintf( text, "a key/button for '%s'",
                (_arg == X_AXIS) ? "right" : "down" );
        display_dialog( button_names[_arg], "Move any axis or press", text );        
        waitevent = 1;
        while( waitevent )
        {
            if( SDL_WaitEvent( &event ) == 0 )
            {
                fprintf( stderr, "["PLUGIN_NAME"]: SDL_WaitEvent(): %s\n", SDL_GetError() );
                return;
            }

            switch( event.type )
            {
            case SDL_KEYDOWN:
                if( event.key.keysym.sym == SDLK_ESCAPE )
                {
                    return;
                }

                config[cont].axis[axis].key_a = key_a;
                config[cont].axis[axis].key_b = event.key.keysym.sym;
                waitevent = 0;
                break;
            case SDL_JOYBUTTONDOWN:
                if( event.jbutton.which == config[cont].device )
                {
                    config[cont].axis[axis].button_a = button_a;
                    config[cont].axis[axis].button_b = event.jbutton.button;
                    waitevent = 0;
                }
                break;
            case SDL_JOYAXISMOTION:
                if( event.jaxis.which == config[cont].device )
                {

                    if (event.jaxis.value >= 15000)
                    {
                        if (config[cont].axis[axis].axis_a == event.jaxis.axis && config[cont].axis[axis].axis_dir_a == 1)
                            break;
                        config[cont].axis[axis].axis_b = event.jaxis.axis;
                        config[cont].axis[axis].axis_dir_b = 1;
                        waitevent = 0;
                    }
                    else if (event.jaxis.value <= -15000)
                    {
                        if (config[cont].axis[axis].axis_a == event.jaxis.axis && config[cont].axis[axis].axis_dir_a == -1)
                            break;
                        config[cont].axis[axis].axis_b = event.jaxis.axis;
                        config[cont].axis[axis].axis_dir_b = -1;
                        waitevent = 0;
                    }
                }
               
                break;
            case SDL_JOYHATMOTION:
                if( event.jhat.which == config[cont].device &&
                    (event.jhat.value == SDL_HAT_UP || event.jhat.value == SDL_HAT_DOWN ||
                    event.jhat.value == SDL_HAT_LEFT || event.jhat.value == SDL_HAT_RIGHT))
                {
                    config[cont].axis[_arg].hat = event.jhat.hat;
                    config[cont].axis[_arg].hat_pos_a = hat_pos_a;
                    config[cont].axis[_arg].hat_pos_b = event.jhat.value;
                    waitevent = 0;
                }
                break;
            }
        }
    }
    else
    {
        display_dialog( button_names[_arg], "Press a key/button or", "move any axis..." );

        waitevent = 1;
        while( waitevent )
        {
            if( SDL_WaitEvent( &event ) == 0 )
            {
                fprintf( stderr, "["PLUGIN_NAME"]: SDL_WaitEvent(): %s\n", SDL_GetError() );
                return;
            }

            switch( event.type )
            {
            case SDL_KEYDOWN:
                if( event.key.keysym.sym == SDLK_ESCAPE )
                {
                    return;
                }
                config[cont].button[_arg].key = event.key.keysym.sym;
                waitevent = 0;
                break;

            case SDL_JOYBUTTONDOWN:
                if( event.jbutton.which == config[cont].device )
                {
                    config[cont].button[_arg].button = event.jbutton.button;
                    waitevent = 0;
                }
                break;

            case SDL_JOYAXISMOTION:
                if( event.jaxis.which == config[cont].device )
                {
                    if( event.jaxis.value >= 15000 )
                    {
                        config[cont].button[_arg].axis = event.jaxis.axis;
                        config[cont].button[_arg].axis_dir = 1;
                        waitevent = 0;
                    }
                    else if( event.jaxis.value <= -15000 )
                    {
                        config[cont].button[_arg].axis = event.jaxis.axis;
                        config[cont].button[_arg].axis_dir = -1;
                        waitevent = 0;
                    }
                }
                break;

            case SDL_JOYHATMOTION:
                if( event.jhat.which == config[cont].device )
                {
                    if( event.jhat.value == SDL_HAT_UP || event.jhat.value == SDL_HAT_DOWN ||
                        event.jhat.value == SDL_HAT_LEFT || event.jhat.value == SDL_HAT_RIGHT )
                    {
                        config[cont].button[_arg].hat = event.jhat.hat;
                        config[cont].button[_arg].hat_pos = event.jhat.value;
                        waitevent = 0;
                    }
                }
                break;

            case SDL_MOUSEBUTTONDOWN:
                if( config[cont].mouse )
                {
                    config[cont].button[_arg].mouse = event.button.button;
                    waitevent = 0;
                }
                break;
            }
        }
    }

}

// display button mapping in a tool-tip
#define HAT_POS_NAME( hat )             \
       ((hat == SDL_HAT_UP) ? "Up" :        \
       ((hat == SDL_HAT_DOWN) ? "Down" :    \
       ((hat == SDL_HAT_LEFT) ? "Left" :    \
       ((hat == SDL_HAT_RIGHT) ? "Right" :  \
         "None"))))

static void
display_button_map( int button, int x, int y )
{
    SDL_Rect dstrect, dstrect2;
    memset(&dstrect,0,sizeof(SDL_Rect));
    memset(&dstrect2,0,sizeof(SDL_Rect));
    const char *key_a, *key_b;
    char button_a[200], button_b[200], axis[200], axis_a[200], axis_b[200], hat[200], hat_pos_a[200], hat_pos_b[200], mbutton[200];
    int a;

    // draw the dialog
    dstrect.w = 300; dstrect.h = 140;
    if( screen->w - x >= dstrect.w )
        dstrect.x = x;
    else
        dstrect.x = x - 10 - dstrect.w;
    if( screen->h - y >= dstrect.h )
        dstrect.y = y;
    else
        dstrect.y = y - 10 - dstrect.h;

    SDL_FillRect( screen, &dstrect, u32black );
    dstrect2.x = dstrect.x + 2; dstrect2.y = dstrect.y + 2;
    dstrect2.w = dstrect.w - 4;
    dstrect2.h = 25;
    SDL_FillRect( screen, &dstrect2, u32gray );
    write_text( screen, dstrect2.x + 100, dstrect2.y, black, gray, button_names[button] );
    dstrect2.y += 26;
    dstrect2.h = dstrect.h - 30;
    SDL_FillRect( screen, &dstrect2, u32gray );

    // write mapping
    if( button == Y_AXIS || button == X_AXIS )
    {
        a = button - Y_AXIS;

        key_a = (config[cont].axis[a].key_a == SDLK_UNKNOWN) ? "None" : SDL_GetKeyName( config[cont].axis[a].key_a );
        key_b = (config[cont].axis[a].key_b == SDLK_UNKNOWN) ? "None" : SDL_GetKeyName( config[cont].axis[a].key_b );

        if( config[cont].axis[a].button_a >= 0 )
            sprintf( button_a, "%d", config[cont].axis[a].button_a );
        else
            strcpy( button_a, "None" );

        if( config[cont].axis[a].button_b >= 0 )
            sprintf( button_b, "%d", config[cont].axis[a].button_b );
        else
            strcpy( button_b, "None" );

        if( config[cont].axis[a].axis_a >= 0 )
           sprintf( axis_a, "%c Axis %c", axis_names[config[cont].axis[a].axis_a],
           (config[cont].axis[a].axis_dir_a > 0) ? '+' : '-' );
        else
            strcpy( axis_a, "None" );
            
        if( config[cont].axis[a].axis_b >= 0 )
           sprintf( axis_b, "%c Axis %c", axis_names[config[cont].axis[a].axis_b],
           (config[cont].axis[a].axis_dir_b > 0) ? '+' : '-' );
        else
            strcpy( axis_b, "None" );


        if( config[cont].axis[a].hat >= 0 )
        {
            sprintf( hat, "#%d", config[cont].axis[a].hat );
            strcpy( hat_pos_a, HAT_POS_NAME(config[cont].axis[a].hat_pos_a) );
            strcpy( hat_pos_b, HAT_POS_NAME(config[cont].axis[a].hat_pos_b) );
        }
        else
        {
            strcpy( hat, "None" );
            strcpy( hat_pos_a, "None" );
            strcpy( hat_pos_b, "None" );
        }

        if( button == Y_AXIS )
        {
            write_text( screen, dstrect2.x + 10, dstrect2.y,      black, gray, "Keys: Up = %s, Down = %s", key_a, key_b );
            write_text( screen, dstrect2.x + 10, dstrect2.y + 20, black, gray, "Buttons: Up = %s, Down = %s", button_a, button_b );
            write_text( screen, dstrect2.x + 10, dstrect2.y + 40, black, gray, "Hat: %s; Up = %s, Down = %s", hat, hat_pos_a, hat_pos_b );
            write_text( screen, dstrect2.x + 10, dstrect2.y + 60, black, gray, "Axis: Up = %s, Down = %s", axis_a, axis_b );
        }
        else
        {
            write_text( screen, dstrect2.x + 10, dstrect2.y,      black, gray, "Keys: Left = %s, Right = %s", key_a, key_b );
            write_text( screen, dstrect2.x + 10, dstrect2.y + 20, black, gray, "Buttons: Left = %s, Right = %s", button_a, button_b );
            write_text( screen, dstrect2.x + 10, dstrect2.y + 40, black, gray, "Hat: %s; Left = %s, Right = %s", hat, hat_pos_a, hat_pos_b );
            write_text( screen, dstrect2.x + 10, dstrect2.y + 60, black, gray, "Axis: Left = %s, Right = %s", axis_a, axis_b );
        }
        
    }
    else
    {
        key_a = (config[cont].button[button].key == SDLK_UNKNOWN) ? "None" : SDL_GetKeyName( config[cont].button[button].key );

        if( config[cont].button[button].button >= 0 )
            sprintf( button_a, "%d", config[cont].button[button].button );
        else
            strcpy( button_a, "None" );

        if( config[cont].button[button].axis >= 0 )
            sprintf( axis, "%c Axis %c", axis_names[config[cont].button[button].axis],
                    (config[cont].button[button].axis_dir > 0) ? '+' : '-' );
        else
            strcpy( axis, "None" );

        if( config[cont].button[button].hat >= 0 )
        {
            sprintf( hat, "#%d", config[cont].button[button].hat );
            strcpy( hat_pos_a, " " );
            strcat( hat_pos_a, HAT_POS_NAME(config[cont].button[button].hat_pos) );
        }
        else
        {
            strcpy( hat, "None" );
            strcpy( hat_pos_a, "" );
        }

        if( config[cont].button[button].mouse > 0 )
            sprintf( mbutton, "#%d", config[cont].button[button].mouse );
        else
            strcpy( mbutton, "None" );

        write_text( screen, dstrect2.x + 10, dstrect2.y,      black, gray, "Key: %s", key_a );
        write_text( screen, dstrect2.x + 10, dstrect2.y + 20, black, gray, "Button: %s", button_a );
        write_text( screen, dstrect2.x + 10, dstrect2.y + 40, black, gray, "Hat: %s%s", hat, hat_pos_a );
        write_text( screen, dstrect2.x + 10, dstrect2.y + 60, black, gray, "Axis: %s", axis );
        write_text( screen, dstrect2.x + 10, dstrect2.y + 80, black, gray, "Mouse Btn: %s", mbutton );
    }

    SDL_Flip( screen );
}

// thread
static int
configure_thread( void *_arg )
{
    int i, x, y, button;
    SDL_Rect dstrect, dstrect2;
    memset(&dstrect,0,sizeof(SDL_Rect));
    memset(&dstrect2,0,sizeof(SDL_Rect));
    SDL_Event event;
    SDL_Surface *surface;

    keep_looping = 1;
    while( keep_looping )
    {
        // read mouse state
        SDL_PumpEvents();
        SDL_GetMouseState( &x, &y );

        // draw screen
        SDL_FillRect( screen, NULL, u32dark_gray );

        // draw the controller tab
        dstrect.x = 10;
        dstrect.y = 10;
        dstrect.w = (SCREEN_W - 20) / 4;
        dstrect.h = 25;
        for( i = 0; i < 4; i++ )
        {
            if( i == cont )
            {
                dstrect2.x = dstrect.x + 1; dstrect2.y = dstrect.y + 1;
                dstrect2.w = dstrect.w - 2; dstrect2.h = dstrect.h - 1;
                SDL_FillRect( screen, &dstrect, u32black );
                SDL_FillRect( screen, &dstrect2, u32gray );
            }
            else
            {
                SDL_FillRect( screen, &dstrect, u32dark_gray );
            }

            write_text( screen, dstrect.x + 32, dstrect.y + 2, black, (i == cont) ? gray : dark_gray, "Controller %d", i + 1 );

            dstrect.x += dstrect.w;
        }

        dstrect.x = 10;
        dstrect.y = 35;
        dstrect.w = SCREEN_W - 20;
        dstrect.h = SCREEN_H - 80;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, u32gray );

        // draw the pad
        dstrect.x = (SCREEN_W - pad->w) / 2;
        dstrect.y = (SCREEN_H - pad->h) / 2;
        dstrect.w = pad->w;
        dstrect.h = pad->h;
        SDL_BlitSurface( pad, NULL, screen, &dstrect );

        // draw the button names
        write_text( screen, 110, 245, black, gray, button_names[R_DPAD] );
        write_text( screen, 110, 195, black, gray, button_names[L_DPAD] );
        write_text( screen, 110, 220, black, gray, button_names[D_DPAD] );
        write_text( screen, 110, 170, black, gray, button_names[U_DPAD] );
        write_text( screen, 300,  65, black, gray, button_names[START_BUTTON] );
        write_text( screen, 120, 290, black, gray, button_names[Z_TRIG] );
        write_text( screen, 475, 230, black, gray, button_names[B_BUTTON] );
        write_text( screen, 475, 325, black, gray, button_names[A_BUTTON] );
        write_text( screen, 475, 130, black, gray, button_names[L_CBUTTON] );
        write_text( screen, 475, 155, black, gray, button_names[U_CBUTTON] );
        write_text( screen, 475, 180, black, gray, button_names[R_CBUTTON] );
        write_text( screen, 475, 205, black, gray, button_names[D_CBUTTON] );
        write_text( screen, 395, 105, black, gray, button_names[R_TRIG] );
        write_text( screen, 155, 105, black, gray, button_names[L_TRIG] );
        write_text( screen, 110, 350, black, gray, button_names[MEMPAK] );
        write_text( screen, 110, 375, black, gray, button_names[RUMBLEPAK] );
        write_text( screen, 220, 398, black, gray, button_names[Y_AXIS] );
        write_text( screen, 280, 398, black, gray, button_names[X_AXIS] );

        // draw plugged checkbutton
        dstrect.x = 20; dstrect.y = 45; dstrect.w = 90; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, (config[cont].control.Present) ? u32gray_border : u32white );
        dstrect.x++; dstrect.y++; dstrect.w--; dstrect.h--;
        SDL_FillRect( screen, &dstrect, (config[cont].control.Present) ? u32gray : u32dark_gray );
        write_text( screen, dstrect.x + 13, dstrect.y+1, black, (config[cont].control.Present) ? gray : dark_gray, "Plugged" );

        // draw mempak checkbutton
        dstrect.x = 120; dstrect.y = 45; dstrect.w = 100; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, (config[cont].control.Plugin == PLUGIN_MEMPAK) ? u32gray_border : u32white );
        dstrect.x++; dstrect.y++; dstrect.w--; dstrect.h--;
        SDL_FillRect( screen, &dstrect, (config[cont].control.Plugin != PLUGIN_NONE) ? u32gray : u32dark_gray );
        if (config[cont].control.Plugin == PLUGIN_NONE)
            write_text( screen, dstrect.x + 12, dstrect.y, black, dark_gray, "None" );
        if (config[cont].control.Plugin == PLUGIN_MEMPAK)
            write_text( screen, dstrect.x + 12, dstrect.y, black, gray, "Mem Pak" );
        if (config[cont].control.Plugin == PLUGIN_RAW)
            write_text( screen, dstrect.x + 12, dstrect.y, black, gray, "Rumble Pak" );
        // draw mouse checkbutton
        dstrect.x = 340; dstrect.y = 398; dstrect.w = 110; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, (config[cont].mouse) ? u32gray_border : u32white );
        dstrect.x++; dstrect.y++; dstrect.w--; dstrect.h--;
        SDL_FillRect( screen, &dstrect, (config[cont].mouse) ? u32gray : u32dark_gray );
        write_text( screen, dstrect.x + 8, dstrect.y+1, black, (config[cont].mouse) ? gray : dark_gray, "Enable Mouse" );

        // draw device box
        write_text( screen, 300, 45, black, gray, "Device:" );
        dstrect.x = 360; dstrect.y = 45; dstrect.w = 260; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, u32dark_gray );
        if( config[cont].device == DEVICE_NONE )
            surface = render_text( black, dark_gray, "None" );
        else if( config[cont].device == DEVICE_KEYBOARD )
            surface = render_text( black, dark_gray, "Keyboard" );
        else
        {
            char chJoyName[64];
            int  iJoyNum = config[cont].device;
            const char *pchSDLName = SDL_JoystickName(iJoyNum);
            if (pchSDLName == NULL)
                sprintf(chJoyName, "NULL (#%i)", iJoyNum + 1);
            else
                sprintf(chJoyName, "%.55s (#%i)", pchSDLName, iJoyNum + 1);
            surface = render_text( black, dark_gray, chJoyName );
        }

        if(surface)
        {
            dstrect.x += dstrect.w - surface->w - 5;
            dstrect.w = surface->w;
            dstrect.h = surface->h;
            SDL_BlitSurface( surface, NULL, screen, &dstrect );
            SDL_FreeSurface( surface );
        }

        // draw some help
        dstrect.x = 20; dstrect.y = 80; dstrect.w = 55; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect2.x = dstrect.x + 1; dstrect2.y = dstrect.y + 1;
        dstrect2.w = dstrect.w - 2; dstrect2.h = dstrect.h - 2;
        SDL_FillRect( screen, &dstrect2, u32gray );
        write_text( screen, dstrect.x + 10, dstrect.y + 2, black, gray, "Help" );

        if( x >= dstrect.x && y >= dstrect.y &&
            x <= dstrect.x + dstrect.w &&
            y <= dstrect.y + dstrect.h )
        {
            dstrect.x = x + 5; dstrect.y = y + 5;
            dstrect.w = 310; dstrect.h = 190;
            SDL_FillRect( screen, &dstrect, u32black );
            dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
            SDL_FillRect( screen, &dstrect, u32gray );
            write_text( screen, dstrect.x + 10, dstrect.y +   0, black, gray, "Move the mouse cursor over a button" );
            write_text( screen, dstrect.x + 10, dstrect.y +  20, black, gray, "name to see the mappings. Click it" );
            write_text( screen, dstrect.x + 10, dstrect.y +  40, black, gray, "to assign a new mapping. Press DEL" );
            write_text( screen, dstrect.x + 10, dstrect.y +  60, black, gray, "to clear the mappings and ESC to" );
            write_text( screen, dstrect.x + 10, dstrect.y +  80, black, gray, "cancel an assignment." );
            write_text( screen, dstrect.x + 10, dstrect.y + 100, black, gray, "The plugged and mempak checkbuttons" );
            write_text( screen, dstrect.x + 10, dstrect.y + 120, black, gray, "can be toggled by clicking them." );
            write_text( screen, dstrect.x + 10, dstrect.y + 140, black, gray, "You can cycle through the devices by" );
            write_text( screen, dstrect.x + 10, dstrect.y + 160, black, gray, "clicking the device entry." );
        }

        // draw ok button
        dstrect.x = 150; dstrect.y = 445; dstrect.w = 90; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, (okHeld) ? u32gray_border : u32white );
        dstrect.x++; dstrect.y++; dstrect.w--; dstrect.h--;
        SDL_FillRect( screen, &dstrect, (okHeld) ? u32gray : u32dark_gray );
        write_text( screen, dstrect.x + 35 + okHeld, dstrect.y + 1 + okHeld, black, (okHeld) ? gray : dark_gray, "Ok" );
        
        // draw cancel button
        dstrect.x = 380; dstrect.y = 445; dstrect.w = 90; dstrect.h = 25;
        SDL_FillRect( screen, &dstrect, u32black );
        dstrect.x++; dstrect.y++; dstrect.w -= 2; dstrect.h -= 2;
        SDL_FillRect( screen, &dstrect, (cancelHeld) ? u32gray_border : u32white );
        dstrect.x++; dstrect.y++; dstrect.w--; dstrect.h--;
        SDL_FillRect( screen, &dstrect, (cancelHeld) ? u32gray : u32dark_gray );
        write_text( screen, dstrect.x + 20 + cancelHeld, dstrect.y + 1 + cancelHeld, black, (cancelHeld) ? gray : dark_gray, "Cancel" );

        // draw mapping tool-tips
        // search button
        button = -1;
        for( i = 0; callback[i].callback; i++ )
        {
            if( callback[i].callback == pad_button_clicked )
            {
                if( x >= callback[i].x && y >= callback[i].y &&
                    x <= callback[i].x + callback[i].w &&
                    y <= callback[i].y + callback[i].h )
                {
                    display_button_map( callback[i].arg, x + 5, y + 5 );
                    button = callback[i].arg;
                }
            }
        }


        // update screen
        SDL_Flip( screen );

        // process input queue
        while( SDL_PollEvent( &event ) )
        {
            switch( event.type )
            {
            case SDL_MOUSEBUTTONDOWN:
                // search callback
                for( i = 0; callback[i].callback; i++ )
                {
                    if( event.button.x >= callback[i].x && event.button.y >= callback[i].y &&
                        event.button.x <= callback[i].x + callback[i].w &&
                        event.button.y <= callback[i].y + callback[i].h )
                    {
                        callback[i].callback( callback[i].arg );
                        break;
                    }
                }
                break;
            case SDL_MOUSEBUTTONUP:
                button_released();
            case SDL_KEYDOWN:
                if( event.key.keysym.sym == SDLK_DELETE )
                {
                    if( button >= 0 )
                    {
                        // clear mappings
                        if( button == Y_AXIS || button == X_AXIS )
                        {
                            int axis = button - Y_AXIS;

                            config[cont].axis[axis].axis_a = -1;
                            config[cont].axis[axis].axis_dir_a = 0;
                            config[cont].axis[axis].axis_b = -1;
                            config[cont].axis[axis].axis_dir_b = 0;
                            config[cont].axis[axis].button_a = -1;
                            config[cont].axis[axis].button_b = -1;
                            config[cont].axis[axis].key_a = SDLK_UNKNOWN;
                            config[cont].axis[axis].key_b = SDLK_UNKNOWN;
                            config[cont].axis[axis].hat = -1;
                            config[cont].axis[axis].hat_pos_a = -1;
                            config[cont].axis[axis].hat_pos_b = -1;
                        }
                        else
                        {
                            config[cont].button[button].axis = -1;
                            config[cont].button[button].axis_dir = 0;
                            config[cont].button[button].button = -1;
                            config[cont].button[button].key = SDLK_UNKNOWN;
                            config[cont].button[button].hat = -1;
                            config[cont].button[button].hat_pos = -1;
                            config[cont].button[button].mouse = -1;
                        }
                    }
                }
                break;
            case SDL_QUIT:
                keep_looping = 0;
                break;
            }
        }
        // don't use 100% CPU
        usleep(100000);
    }

    return 0;
}

static SController *g_psController = NULL;

static int
init_and_run( void *_arg )
{
    SDL_RWops *rw;
    int i, rval;

    // init sdl
    if( !SDL_WasInit( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK ) )
        if( SDL_InitSubSystem( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK ) < 0 )
        {
            fprintf( stderr, "["PLUGIN_NAME"]: Couldn't init SDL video and joystick subsystem: %s\n", SDL_GetError() );
            return 1;
        }
    SDL_JoystickEventState( SDL_ENABLE );

    // load the pad image
    pad = SDL_CreateRGBSurfaceFrom( (char *)pad_image.pixel_data, pad_image.width, pad_image.height, pad_image.bytes_per_pixel * 8,
                    pad_image.width * pad_image.bytes_per_pixel, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 );
    if( !pad )
    {
        fprintf( stderr, "["PLUGIN_NAME"]: Couldn't load the pad image from memory: %s\n", SDL_GetError() );
        SDL_JoystickEventState( SDL_DISABLE );
        SDL_QuitSubSystem( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK );
        return 2;
    }

    // init sdl_ttf2
    if( !TTF_WasInit() )
        if( TTF_Init() < 0 )
        {
            fprintf( stderr, "["PLUGIN_NAME"]: Couldn't init TTF library: %s\n", SDL_GetError() );
            SDL_JoystickEventState( SDL_DISABLE );
            SDL_QuitSubSystem( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK );
            return 3;
        }

    // open font
    rw = SDL_RWFromMem( (char *)arial.data, arial.size );
    font = TTF_OpenFontRW( rw, 0, FONT_SIZEPT );
    if( font == NULL )
    {
        fprintf( stderr, "["PLUGIN_NAME"]: Couldn't load %d pt font: %s\n", FONT_SIZEPT, SDL_GetError() );
        TTF_Quit();
        SDL_JoystickEventState( SDL_DISABLE );
        SDL_QuitSubSystem( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK );
        return 4;
    }
    TTF_SetFontStyle( font, TTF_STYLE_NORMAL );

    // display dialog (set video mode)
    screen = SDL_SetVideoMode( 640, 480, 0, SDL_SWSURFACE );
    if( !screen )
    {
        fprintf( stderr, "["PLUGIN_NAME"]: Couldn't set video mode 640x480: %s\n", SDL_GetError() );
        TTF_Quit();
        SDL_JoystickEventState( SDL_DISABLE );
        SDL_QuitSubSystem( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK );
        return 5;
    }
    SDL_WM_SetCaption( PLUGIN_NAME" "PLUGIN_VERSION, NULL );

    // create colors
    u32black       = SDL_MapRGBA( screen->format, black.r, black.g, black.b, 0 );
    u32gray        = SDL_MapRGBA( screen->format, gray.r, gray.g, gray.b, 0 );
    u32dark_gray   = SDL_MapRGBA( screen->format, dark_gray.r, dark_gray.g, dark_gray.b, 0 );
    u32gray_border = SDL_MapRGBA( screen->format, gray_border.r, gray_border.g, gray_border.b, 0 );
    u32white       = SDL_MapRGBA( screen->format, white.r, white.g, white.b, 0 );

    /* Open all joysticks */
    open_joysticks();

    // load configuration
    orig_cont = g_psController;
    for( i = 0; i < 4; i++ )
    {
        if (orig_cont[i].device < num_joys)
            config[i].device = orig_cont[i].device;
        else
            config[i].device = DEVICE_NONE;
        config[i].mouse = orig_cont[i].mouse;
        memcpy( config[i].axis, orig_cont[i].axis, sizeof( SAxisMap ) * 2 );
        memcpy( config[i].button, orig_cont[i].button, sizeof( SButtonMap ) * 16 );
        memcpy( &config[i].control, &orig_cont[i].control, sizeof( CONTROL ) );
    }

    // run the dialog
    rval = configure_thread(_arg);

    // close sdl
    close_joysticks();
    SDL_FreeSurface( pad );
    TTF_Quit();
    SDL_JoystickEventState( SDL_DISABLE );
    SDL_QuitSubSystem( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK );

    /* all done */
    return rval;
}

// config function
void
configure_sdl( SController *controller )
{
    // we must initialize SDL from within the new thread in order to call SDL_PumpEvents
    g_psController = controller;

    // run thread
    thread = SDL_CreateThread( init_and_run, NULL );
    if( !thread )
    {
        fprintf( stderr, "["PLUGIN_NAME"]: Couldn't create thread: %s\n", SDL_GetError() );
        return;
    }

    // everything ok
}

#endif // GUI_SDL