xrdp-proprietary/xrdp/xrdp_bitmap.c

/**
 * xrdp: A Remote Desktop Protocol server.
 *
 * Copyright (C) Jay Sorg 2004-2013
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * bitmap, drawable
 * this is a object that can be drawn on with a painter
 * all windows, bitmaps, even the screen are of this type
 * maybe it should be called xrdp_drawable
 */

#include "xrdp.h"
#include "log.h"

static int g_crc_seed = 0xffffffff;
static int g_crc_table[256] =
{
    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
    0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
    0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
    0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
    0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
    0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
    0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
    0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
    0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
    0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
    0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
    0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
    0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
    0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
    0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
    0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
    0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
    0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
    0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
    0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
    0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
    0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
    0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
    0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
    0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
    0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
    0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
    0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
    0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
    0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
    0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
    0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
    0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
    0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
    0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};

#define CRC_START(in_crc) (in_crc) = g_crc_seed
#define CRC_PASS(in_pixel, in_crc) \
    (in_crc) = g_crc_table[((in_crc) ^ (in_pixel)) & 0xff] ^ ((in_crc) >> 8)
#define CRC_END(in_crc) (in_crc) = ((in_crc) ^ g_crc_seed)

/*****************************************************************************/
struct xrdp_bitmap *APP_CC
xrdp_bitmap_create(int width, int height, int bpp,
                   int type, struct xrdp_wm *wm)
{
    struct xrdp_bitmap *self = (struct xrdp_bitmap *)NULL;
    int Bpp = 0;

    self = (struct xrdp_bitmap *)g_malloc(sizeof(struct xrdp_bitmap), 1);
    self->type = type;
    self->width = width;
    self->height = height;
    self->bpp = bpp;
    Bpp = 4;

    switch (bpp)
    {
        case 8:
            Bpp = 1;
            break;
        case 15:
            Bpp = 2;
            break;
        case 16:
            Bpp = 2;
            break;
    }

    if (self->type == WND_TYPE_BITMAP || self->type == WND_TYPE_IMAGE)
    {
        self->data = (char *)g_malloc(width * height * Bpp, 0);
    }

    if (self->type != WND_TYPE_BITMAP)
    {
        self->child_list = list_create();
    }

    self->line_size = width * Bpp;

    if (self->type == WND_TYPE_COMBO)
    {
        self->string_list = list_create();
        self->string_list->auto_free = 1;
        self->data_list = list_create();
        self->data_list->auto_free = 1;
    }

    self->wm = wm;
    return self;
}

/*****************************************************************************/
struct xrdp_bitmap *APP_CC
xrdp_bitmap_create_with_data(int width, int height,
                             int bpp, char *data,
                             struct xrdp_wm *wm)
{
    struct xrdp_bitmap *self = (struct xrdp_bitmap *)NULL;

    self = (struct xrdp_bitmap *)g_malloc(sizeof(struct xrdp_bitmap), 1);
    self->type = WND_TYPE_BITMAP;
    self->width = width;
    self->height = height;
    self->bpp = bpp;
    self->data = data;
    self->do_not_free_data = 1;
    self->wm = wm;
    return self;
}

/*****************************************************************************/
void APP_CC
xrdp_bitmap_delete(struct xrdp_bitmap *self)
{
    int i = 0;
    struct xrdp_mod_data *mod_data = (struct xrdp_mod_data *)NULL;

    if (self == 0)
    {
        return;
    }

    if (self->wm != 0)
    {
        if (self->wm->focused_window != 0)
        {
            if (self->wm->focused_window->focused_control == self)
            {
                self->wm->focused_window->focused_control = 0;
            }
        }

        if (self->wm->focused_window == self)
        {
            self->wm->focused_window = 0;
        }

        if (self->wm->dragging_window == self)
        {
            self->wm->dragging_window = 0;
        }

        if (self->wm->button_down == self)
        {
            self->wm->button_down = 0;
        }

        if (self->wm->popup_wnd == self)
        {
            self->wm->popup_wnd = 0;
        }

        if (self->wm->login_window == self)
        {
            self->wm->login_window = 0;
        }

        if (self->wm->log_wnd == self)
        {
            self->wm->log_wnd = 0;
        }
    }

    if (self->child_list != 0)
    {
        for (i = self->child_list->count - 1; i >= 0; i--)
        {
            xrdp_bitmap_delete((struct xrdp_bitmap *)self->child_list->items[i]);
        }

        list_delete(self->child_list);
    }

    if (self->parent != 0)
    {
        i = list_index_of(self->parent->child_list, (long)self);

        if (i >= 0)
        {
            list_remove_item(self->parent->child_list, i);
        }
    }

    if (self->string_list != 0) /* for combo */
    {
        list_delete(self->string_list);
    }

    if (self->data_list != 0) /* for combo */
    {
        for (i = 0; i < self->data_list->count; i++)
        {
            mod_data = (struct xrdp_mod_data *)list_get_item(self->data_list, i);

            if (mod_data != 0)
            {
                list_delete(mod_data->names);
                list_delete(mod_data->values);
            }
        }

        list_delete(self->data_list);
    }

    if (!self->do_not_free_data)
    {
        g_free(self->data);
    }

    g_free(self->caption1);
    g_free(self);
}

/*****************************************************************************/
struct xrdp_bitmap *APP_CC
xrdp_bitmap_get_child_by_id(struct xrdp_bitmap *self, int id)
{
    int i = 0;
    struct xrdp_bitmap *b = (struct xrdp_bitmap *)NULL;

    for (i = 0; i < self->child_list->count; i++)
    {
        b = (struct xrdp_bitmap *)list_get_item(self->child_list, i);

        if (b->id == id)
        {
            return b;
        }
    }

    return 0;
}

/*****************************************************************************/
/* if focused is true focus this window else unfocus it */
/* returns error */
int APP_CC
xrdp_bitmap_set_focus(struct xrdp_bitmap *self, int focused)
{
    struct xrdp_painter *painter = (struct xrdp_painter *)NULL;

    if (self == 0)
    {
        return 0;
    }

    if (self->type != WND_TYPE_WND) /* 1 */
    {
        return 0;
    }

    painter = xrdp_painter_create(self->wm, self->wm->session);
    xrdp_painter_font_needed(painter);
    xrdp_painter_begin_update(painter);

    if (focused)
    {
        /* active title bar */
        painter->fg_color = self->wm->blue;
        xrdp_painter_fill_rect(painter, self, 3, 3, self->width - 5, 18);
        painter->fg_color = self->wm->white;
    }
    else
    {
        /* inactive title bar */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, 3, 3, self->width - 5, 18);
        painter->fg_color = self->wm->black;
    }

    xrdp_painter_draw_text(painter, self, 4, 4, self->caption1);
    xrdp_painter_end_update(painter);
    xrdp_painter_delete(painter);
    return 0;
}

/*****************************************************************************/
static int APP_CC
xrdp_bitmap_get_index(struct xrdp_bitmap *self, int *palette, int color)
{
    int r = 0;
    int g = 0;
    int b = 0;

    r = (color & 0xff0000) >> 16;
    g = (color & 0x00ff00) >> 8;
    b = (color & 0x0000ff) >> 0;
    r = (r >> 5) << 0;
    g = (g >> 5) << 3;
    b = (b >> 6) << 6;
    return (b | g | r);
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_bitmap_resize(struct xrdp_bitmap *self, int width, int height)
{
    int Bpp = 0;

    if ((width == self->width) && (height == self->height))
    {
        return 0;
    }

    if (self->do_not_free_data)
    {
        return 1;
    }

    self->width = width;
    self->height = height;
    Bpp = 4;

    switch (self->bpp)
    {
        case 8:
            Bpp = 1;
            break;
        case 15:
            Bpp = 2;
            break;
        case 16:
            Bpp = 2;
            break;
    }

    g_free(self->data);
    self->data = (char *)g_malloc(width * height * Bpp, 0);
    self->line_size = width * Bpp;
    return 0;
}

/*****************************************************************************/
/* load a bmp file */
/* return 0 ok */
/* return 1 error */
int APP_CC
xrdp_bitmap_load(struct xrdp_bitmap *self, const char *filename, int *palette)
{
    int fd = 0;
    int i = 0;
    int j = 0;
    int k = 0;
    int color = 0;
    int size = 0;
    int palette1[256];
    char type1[4];
    struct xrdp_bmp_header header;
    struct stream *s = (struct stream *)NULL;

    g_memset(palette1, 0, sizeof(int) * 256);
    g_memset(type1, 0, sizeof(char) * 4);
    g_memset(&header, 0, sizeof(struct xrdp_bmp_header));

    if (!g_file_exist(filename))
    {
        log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap file [%s] "
                    "does not exist", filename);
        return 1;
    }

    s = (struct stream *)NULL;
    fd = g_file_open(filename);

    if (fd != -1)
    {
        /* read file type */
        if (g_file_read(fd, type1, 2) != 2)
        {
            log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap file [%s] "
                        "read error", filename);
            g_file_close(fd);
            return 1;
        }

        if ((type1[0] != 'B') || (type1[1] != 'M'))
        {
            log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap file [%s] "
                        "not BMP file", filename);
            g_file_close(fd);
            return 1;
        }

        /* read file size */
        make_stream(s);
        init_stream(s, 8192);
        g_file_read(fd, s->data, 4);
        in_uint32_le(s, size);
        /* read bmp header */
        g_file_seek(fd, 14);
        init_stream(s, 8192);
        g_file_read(fd, s->data, 40); /* size better be 40 */
        in_uint32_le(s, header.size);
        in_uint32_le(s, header.image_width);
        in_uint32_le(s, header.image_height);
        in_uint16_le(s, header.planes);
        in_uint16_le(s, header.bit_count);
        in_uint32_le(s, header.compression);
        in_uint32_le(s, header.image_size);
        in_uint32_le(s, header.x_pels_per_meter);
        in_uint32_le(s, header.y_pels_per_meter);
        in_uint32_le(s, header.clr_used);
        in_uint32_le(s, header.clr_important);

        if ((header.bit_count != 4) && (header.bit_count != 8) &&
                (header.bit_count != 24))
        {
            log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap file [%s] "
                        "bad bpp %d", filename, header.bit_count);
            free_stream(s);
            g_file_close(fd);
            return 1;
        }

        if (header.bit_count == 24) /* 24 bit bitmap */
        {
            g_file_seek(fd, 14 + header.size);
            xrdp_bitmap_resize(self, header.image_width, header.image_height);
            size = header.image_width * header.image_height * 3;
            init_stream(s, size);

            /* read data */
            for (i = header.image_height - 1; i >= 0; i--)
            {
                size = header.image_width * 3;
                k = g_file_read(fd, s->data + i * size, size);

                if (k != size)
                {
                    log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap "
                                "file [%s] read", filename);
                }
            }

            for (i = 0; i < self->height; i++)
            {
                for (j = 0; j < self->width; j++)
                {
                    in_uint8(s, k);
                    color = k;
                    in_uint8(s, k);
                    color |= k << 8;
                    in_uint8(s, k);
                    color |= k << 16;

                    if (self->bpp == 8)
                    {
                        color = xrdp_bitmap_get_index(self, palette, color);
                    }
                    else if (self->bpp == 15)
                    {
                        color = COLOR15((color & 0xff0000) >> 16,
                                        (color & 0x00ff00) >> 8,
                                        (color & 0x0000ff) >> 0);
                    }
                    else if (self->bpp == 16)
                    {
                        color = COLOR16((color & 0xff0000) >> 16,
                                        (color & 0x00ff00) >> 8,
                                        (color & 0x0000ff) >> 0);
                    }

                    xrdp_bitmap_set_pixel(self, j, i, color);
                }
            }
        }
        else if (header.bit_count == 8) /* 8 bit bitmap */
        {
            /* read palette */
            g_file_seek(fd, 14 + header.size);
            init_stream(s, 8192);
            g_file_read(fd, s->data, header.clr_used * sizeof(int));

            for (i = 0; i < header.clr_used; i++)
            {
                in_uint32_le(s, palette1[i]);
            }

            xrdp_bitmap_resize(self, header.image_width, header.image_height);
            size = header.image_width * header.image_height;
            init_stream(s, size);

            /* read data */
            for (i = header.image_height - 1; i >= 0; i--)
            {
                size = header.image_width;
                k = g_file_read(fd, s->data + i * size, size);

                if (k != size)
                {
                    log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap "
                                "file [%s] read", filename);
                }
            }

            for (i = 0; i < self->height; i++)
            {
                for (j = 0; j < self->width; j++)
                {
                    in_uint8(s, k);
                    color = palette1[k];

                    if (self->bpp == 8)
                    {
                        color = xrdp_bitmap_get_index(self, palette, color);
                    }
                    else if (self->bpp == 15)
                    {
                        color = COLOR15((color & 0xff0000) >> 16,
                                        (color & 0x00ff00) >> 8,
                                        (color & 0x0000ff) >> 0);
                    }
                    else if (self->bpp == 16)
                    {
                        color = COLOR16((color & 0xff0000) >> 16,
                                        (color & 0x00ff00) >> 8,
                                        (color & 0x0000ff) >> 0);
                    }

                    xrdp_bitmap_set_pixel(self, j, i, color);
                }
            }
        }
        else if (header.bit_count == 4) /* 4 bit bitmap */
        {
            /* read palette */
            g_file_seek(fd, 14 + header.size);
            init_stream(s, 8192);
            g_file_read(fd, s->data, header.clr_used * sizeof(int));

            for (i = 0; i < header.clr_used; i++)
            {
                in_uint32_le(s, palette1[i]);
            }

            xrdp_bitmap_resize(self, header.image_width, header.image_height);
            size = (header.image_width * header.image_height) / 2;
            init_stream(s, size);

            /* read data */
            for (i = header.image_height - 1; i >= 0; i--)
            {
                size = header.image_width / 2;
                k = g_file_read(fd, s->data + i * size, size);

                if (k != size)
                {
                    log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error bitmap "
                                "file [%s] read", filename);
                }
            }

            for (i = 0; i < self->height; i++)
            {
                for (j = 0; j < self->width; j++)
                {
                    if ((j & 1) == 0)
                    {
                        in_uint8(s, k);
                        color = (k >> 4) & 0xf;
                    }
                    else
                    {
                        color = k & 0xf;
                    }

                    color = palette1[color];

                    if (self->bpp == 8)
                    {
                        color = xrdp_bitmap_get_index(self, palette, color);
                    }
                    else if (self->bpp == 15)
                    {
                        color = COLOR15((color & 0xff0000) >> 16,
                                        (color & 0x00ff00) >> 8,
                                        (color & 0x0000ff) >> 0);
                    }
                    else if (self->bpp == 16)
                    {
                        color = COLOR16((color & 0xff0000) >> 16,
                                        (color & 0x00ff00) >> 8,
                                        (color & 0x0000ff) >> 0);
                    }

                    xrdp_bitmap_set_pixel(self, j, i, color);
                }
            }
        }

        g_file_close(fd);
        free_stream(s);
    }
    else
    {
        log_message(LOG_LEVEL_ERROR, "xrdp_bitmap_load: error loading bitmap "
                    "from file [%s]", filename);
        return 1;
    }

    return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_bitmap_get_pixel(struct xrdp_bitmap *self, int x, int y)
{
    if (self == 0)
    {
        return 0;
    }

    if (self->data == 0)
    {
        return 0;
    }

    if (x >= 0 && x < self->width && y >= 0 && y < self->height)
    {
        if (self->bpp == 8)
        {
            return GETPIXEL8(self->data, x, y, self->width);
        }
        else if (self->bpp == 15 || self->bpp == 16)
        {
            return GETPIXEL16(self->data, x, y, self->width);
        }
        else if (self->bpp == 24)
        {
            return GETPIXEL32(self->data, x, y, self->width);
        }
    }

    return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_bitmap_set_pixel(struct xrdp_bitmap *self, int x, int y, int pixel)
{
    if (self == 0)
    {
        return 0;
    }

    if (self->data == 0)
    {
        return 0;
    }

    if (x >= 0 && x < self->width && y >= 0 && y < self->height)
    {
        if (self->bpp == 8)
        {
            SETPIXEL8(self->data, x, y, self->width, pixel);
        }
        else if (self->bpp == 15 || self->bpp == 16)
        {
            SETPIXEL16(self->data, x, y, self->width, pixel);
        }
        else if (self->bpp == 24)
        {
            SETPIXEL32(self->data, x, y, self->width, pixel);
        }
    }

    return 0;
}

/*****************************************************************************/
/* copy part of self at x, y to 0, 0 in dest */
/* returns error */
int APP_CC
xrdp_bitmap_copy_box(struct xrdp_bitmap *self,
                     struct xrdp_bitmap *dest,
                     int x, int y, int cx, int cy)
{
    int i = 0;
    int j = 0;
    int destx = 0;
    int desty = 0;
    int pixel = 0;

    if (self == 0)
    {
        return 1;
    }

    if (dest == 0)
    {
        return 1;
    }

    if (self->type != WND_TYPE_BITMAP && self->type != WND_TYPE_IMAGE)
    {
        return 1;
    }

    if (dest->type != WND_TYPE_BITMAP && dest->type != WND_TYPE_IMAGE)
    {
        return 1;
    }

    if (self->bpp != dest->bpp)
    {
        return 1;
    }

    destx = 0;
    desty = 0;

    if (!check_bounds(self, &x, &y, &cx, &cy))
    {
        return 1;
    }

    if (!check_bounds(dest, &destx, &desty, &cx, &cy))
    {
        return 1;
    }

    if (self->bpp == 24)
    {
        for (i = 0; i < cy; i++)
        {
            for (j = 0; j < cx; j++)
            {
                pixel = GETPIXEL32(self->data, j + x, i + y, self->width);
                SETPIXEL32(dest->data, j + destx, i + desty, dest->width, pixel);
            }
        }
    }
    else if (self->bpp == 15 || self->bpp == 16)
    {
        for (i = 0; i < cy; i++)
        {
            for (j = 0; j < cx; j++)
            {
                pixel = GETPIXEL16(self->data, j + x, i + y, self->width);
                SETPIXEL16(dest->data, j + destx, i + desty, dest->width, pixel);
            }
        }
    }
    else if (self->bpp == 8)
    {
        for (i = 0; i < cy; i++)
        {
            for (j = 0; j < cx; j++)
            {
                pixel = GETPIXEL8(self->data, j + x, i + y, self->width);
                SETPIXEL8(dest->data, j + destx, i + desty, dest->width, pixel);
            }
        }
    }
    else
    {
        return 1;
    }

    return 0;
}

/*****************************************************************************/
/* copy part of self at x, y to 0, 0 in dest */
/* returns error */
int APP_CC
xrdp_bitmap_copy_box_with_crc(struct xrdp_bitmap *self,
                              struct xrdp_bitmap *dest,
                              int x, int y, int cx, int cy)
{
    int i = 0;
    int j = 0;
    int destx = 0;
    int desty = 0;
    int pixel = 0;
    int crc = 0;
    int incs = 0;
    int incd = 0;
    unsigned char *s8 = (unsigned char *)NULL;
    unsigned char *d8 = (unsigned char *)NULL;
    unsigned short *s16 = (unsigned short *)NULL;
    unsigned short *d16 = (unsigned short *)NULL;
    unsigned int *s32;
    unsigned int *d32;

    if (self == 0)
    {
        return 1;
    }

    if (dest == 0)
    {
        return 1;
    }

    if (self->type != WND_TYPE_BITMAP && self->type != WND_TYPE_IMAGE)
    {
        return 1;
    }

    if (dest->type != WND_TYPE_BITMAP && dest->type != WND_TYPE_IMAGE)
    {
        return 1;
    }

    if (self->bpp != dest->bpp)
    {
        return 1;
    }

    destx = 0;
    desty = 0;

    if (!check_bounds(self, &x, &y, &cx, &cy))
    {
        return 1;
    }

    if (!check_bounds(dest, &destx, &desty, &cx, &cy))
    {
        return 1;
    }

    CRC_START(crc);

    if (self->bpp == 24)
    {
        s32 = ((unsigned int *)(self->data)) + (self->width * y + x);
        d32 = ((unsigned int *)(dest->data)) + (dest->width * desty + destx);
        incs = self->width - cx;
        incd = dest->width - cx;

        for (i = 0; i < cy; i++)
        {
            j = 0;
            while (j < cx - 4)
            {
                pixel = *s32;
                CRC_PASS(pixel, crc);
                CRC_PASS(pixel >> 8, crc);
                CRC_PASS(pixel >> 16, crc);
                *d32 = pixel;
                s32++;
                d32++;

                pixel = *s32;
                CRC_PASS(pixel, crc);
                CRC_PASS(pixel >> 8, crc);
                CRC_PASS(pixel >> 16, crc);
                *d32 = pixel;
                s32++;
                d32++;

                pixel = *s32;
                CRC_PASS(pixel, crc);
                CRC_PASS(pixel >> 8, crc);
                CRC_PASS(pixel >> 16, crc);
                *d32 = pixel;
                s32++;
                d32++;

                pixel = *s32;
                CRC_PASS(pixel, crc);
                CRC_PASS(pixel >> 8, crc);
                CRC_PASS(pixel >> 16, crc);
                *d32 = pixel;
                s32++;
                d32++;

                j += 4;
            }
            while (j < cx)
            {
                pixel = *s32;
                CRC_PASS(pixel, crc);
                CRC_PASS(pixel >> 8, crc);
                CRC_PASS(pixel >> 16, crc);
                *d32 = pixel;
                s32++;
                d32++;

                j += 1;
            }

            s32 += incs;
            d32 += incd;
        }
    }
    else if (self->bpp == 15 || self->bpp == 16)
    {
        s16 = ((unsigned short *)(self->data)) + (self->width * y + x);
        d16 = ((unsigned short *)(dest->data)) + (dest->width * desty + destx);
        incs = self->width - cx;
        incd = dest->width - cx;

        for (i = 0; i < cy; i++)
        {
            for (j = 0; j < cx; j++)
            {
                pixel = *s16;
                CRC_PASS(pixel, crc);
                CRC_PASS(pixel >> 8, crc);
                *d16 = pixel;
                s16++;
                d16++;
            }

            s16 += incs;
            d16 += incd;
        }
    }
    else if (self->bpp == 8)
    {
        s8 = ((unsigned char *)(self->data)) + (self->width * y + x);
        d8 = ((unsigned char *)(dest->data)) + (dest->width * desty + destx);
        incs = self->width - cx;
        incd = dest->width - cx;

        for (i = 0; i < cy; i++)
        {
            for (j = 0; j < cx; j++)
            {
                pixel = *s8;
                CRC_PASS(pixel, crc);
                *d8 = pixel;
                s8++;
                d8++;
            }

            s8 += incs;
            d8 += incd;
        }
    }
    else
    {
        return 1;
    }

    CRC_END(crc);
    dest->crc = crc;
    return 0;
}

/*****************************************************************************/
/* returns true if they are the same, else returns false */
int APP_CC
xrdp_bitmap_compare(struct xrdp_bitmap *self,
                    struct xrdp_bitmap *b)
{
    if (self == 0)
    {
        return 0;
    }

    if (b == 0)
    {
        return 0;
    }

    if (self->bpp != b->bpp)
    {
        return 0;
    }

    if (self->width != b->width)
    {
        return 0;
    }

    if (self->height != b->height)
    {
        return 0;
    }

    if (g_memcmp(self->data, b->data, b->height * b->line_size) == 0)
    {
        return 1;
    }

    return 0;
}

/*****************************************************************************/
/* returns true if they are the same, else returns false */
int APP_CC
xrdp_bitmap_compare_with_crc(struct xrdp_bitmap *self,
                             struct xrdp_bitmap *b)
{
    if (self == 0)
    {
        return 0;
    }

    if (b == 0)
    {
        return 0;
    }

    if (self->bpp != b->bpp)
    {
        return 0;
    }

    if (self->width != b->width)
    {
        return 0;
    }

    if (self->height != b->height)
    {
        return 0;
    }

    if (self->crc == b->crc)
    {
        return 1;
    }

    return 0;
}

/*****************************************************************************/
static int APP_CC
xrdp_bitmap_draw_focus_box(struct xrdp_bitmap *self,
                           struct xrdp_painter *painter,
                           int x, int y, int cx, int cy)
{
    painter->rop = 0xf0;
    xrdp_painter_begin_update(painter);
    painter->use_clip = 0;
    painter->mix_mode = 1;
    painter->brush.pattern[0] = 0xaa;
    painter->brush.pattern[1] = 0x55;
    painter->brush.pattern[2] = 0xaa;
    painter->brush.pattern[3] = 0x55;
    painter->brush.pattern[4] = 0xaa;
    painter->brush.pattern[5] = 0x55;
    painter->brush.pattern[6] = 0xaa;
    painter->brush.pattern[7] = 0x55;
    painter->brush.x_orgin = x;
    painter->brush.x_orgin = x;
    painter->brush.style = 3;
    painter->fg_color = self->wm->black;
    painter->bg_color = self->parent->bg_color;
    /* top */
    xrdp_painter_fill_rect(painter, self, x, y, cx, 1);
    /* bottom */
    xrdp_painter_fill_rect(painter, self, x, y + (cy - 1), cx, 1);
    /* left */
    xrdp_painter_fill_rect(painter, self, x, y + 1, 1, cy - 2);
    /* right */
    xrdp_painter_fill_rect(painter, self, x + (cx - 1), y + 1, 1, cy - 2);
    xrdp_painter_end_update(painter);
    painter->rop = 0xcc;
    painter->mix_mode = 0;
    return 0;
}

/*****************************************************************************/
/* x and y are in relation to self for 0, 0 is the top left of the control */
static int APP_CC
xrdp_bitmap_draw_button(struct xrdp_bitmap *self,
                        struct xrdp_painter *painter,
                        int x, int y, int w, int h,
                        int down)
{
    if (down)
    {
        /* gray box */
        painter->fg_color = self->wm->grey;
        xrdp_painter_fill_rect(painter, self, x, y, w, h);
        /* black top line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, x, y, w, 1);
        /* black left line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, x, y, 1, h);
        /* dark grey top line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, x + 1, y + 1, w - 2, 1);
        /* dark grey left line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, x + 1, y + 1, 1, h - 2);
        /* dark grey bottom line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, x + 1, y + (h - 2), w - 1, 1);
        /* dark grey right line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, x + (w - 2), y + 1, 1, h - 1);
        /* black bottom line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, x, y + (h - 1), w, 1);
        /* black right line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, x + (w - 1), y, 1, h);
    }
    else
    {
        /* gray box */
        painter->fg_color = self->wm->grey;
        xrdp_painter_fill_rect(painter, self, x, y, w, h);
        /* white top line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, x, y, w, 1);
        /* white left line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, x, y, 1, h);
        /* dark grey bottom line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, x + 1, y + (h - 2), w - 1, 1);
        /* dark grey right line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, (x + w) - 2, y + 1, 1, h - 1);
        /* black bottom line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, x, y + (h - 1), w, 1);
        /* black right line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, x + (w - 1), y, 1, h);
    }

    return 0;
}

/*****************************************************************************/
/* nil for rect means the whole thing */
/* returns error */
int APP_CC
xrdp_bitmap_invalidate(struct xrdp_bitmap *self, struct xrdp_rect *rect)
{
    int i;
    int w;
    int h;
    int x;
    int y;
    struct xrdp_bitmap *b;
    struct xrdp_rect r1;
    struct xrdp_rect r2;
    struct xrdp_painter *painter;
    twchar wtext[256];
    char text[256];
    char *p;

    if (self == 0) /* if no bitmap */
    {
        return 0;
    }

    if (self->type == WND_TYPE_BITMAP) /* if 0, bitmap, leave */
    {
        return 0;
    }

    painter = xrdp_painter_create(self->wm, self->wm->session);
    xrdp_painter_font_needed(painter);
    painter->rop = 0xcc; /* copy */

    if (rect == 0)
    {
        painter->use_clip = 0;
    }
    else
    {
        if (ISRECTEMPTY(*rect))
        {
            xrdp_painter_delete(painter);
            return 0;
        }

        painter->clip = *rect;
        painter->use_clip = &painter->clip;
    }

    xrdp_painter_begin_update(painter);

    if (self->type == WND_TYPE_WND) /* 1 */
    {
        /* draw grey background */
        painter->fg_color = self->bg_color;
        xrdp_painter_fill_rect(painter, self, 0, 0, self->width, self->height);
        /* top white line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 1, 1, self->width - 2, 1);
        /* left white line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 1, 1, 1, self->height - 2);
        /* bottom dark grey line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, 1, self->height - 2,
                               self->width - 2, 1);
        /* right dark grey line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, self->width - 2, 1, 1,
                               self->height - 2);
        /* bottom black line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, 0, self->height - 1,
                               self->width, 1);
        /* right black line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, self->width - 1, 0,
                               1, self->height);

        if (self->wm->focused_window == self)
        {
            /* active title bar */
            painter->fg_color = self->wm->blue;
            xrdp_painter_fill_rect(painter, self, 3, 3, self->width - 5, 18);
            painter->fg_color = self->wm->white;
        }
        else
        {
            /* inactive title bar */
            painter->fg_color = self->wm->dark_grey;
            xrdp_painter_fill_rect(painter, self, 3, 3, self->width - 5, 18);
            painter->fg_color = self->wm->black;
        }

        xrdp_painter_draw_text(painter, self, 4, 4, self->caption1);
    }
    else if (self->type == WND_TYPE_SCREEN) /* 2 */
    {
        if (self->wm->mm->mod != 0)
        {
            if (self->wm->mm->mod->mod_event != 0)
            {
                if (rect != 0)
                {
                    x = rect->left;
                    y = rect->top;
                    w = rect->right - rect->left;
                    h = rect->bottom - rect->top;

                    if (check_bounds(self->wm->screen, &x, &y, &w, &h))
                    {
                        self->wm->mm->mod->mod_event(self->wm->mm->mod, WM_INVALIDATE,
                                                     MAKELONG(y, x), MAKELONG(h, w),
                                                     0, 0);
                    }
                }
                else
                {
                    x = 0;
                    y = 0;
                    w = self->wm->screen->width;
                    h = self->wm->screen->height;
                    self->wm->mm->mod->mod_event(self->wm->mm->mod, WM_INVALIDATE,
                                                 MAKELONG(y, x), MAKELONG(h, w),
                                                 0, 0);
                }
            }
        }
        else
        {
            painter->fg_color = self->bg_color;
            xrdp_painter_fill_rect(painter, self, 0, 0, self->width, self->height);
        }
    }
    else if (self->type == WND_TYPE_BUTTON) /* 3 */
    {
        if (self->state == BUTTON_STATE_UP) /* 0 */
        {
            xrdp_bitmap_draw_button(self, painter, 0, 0,
                                    self->width, self->height, 0);
            w = xrdp_painter_text_width(painter, self->caption1);
            h = xrdp_painter_text_height(painter, self->caption1);
            painter->fg_color = self->wm->black;
            xrdp_painter_draw_text(painter, self, self->width / 2 - w / 2,
                                   self->height / 2 - h / 2, self->caption1);

            if (self->parent != 0)
            {
                if (self->wm->focused_window == self->parent)
                {
                    if (self->parent->focused_control == self)
                    {
                        xrdp_bitmap_draw_focus_box(self, painter, 4, 4, self->width - 8,
                                                   self->height - 8);
                    }
                }
            }
        }
        else if (self->state == BUTTON_STATE_DOWN) /* 1 */
        {
            xrdp_bitmap_draw_button(self, painter, 0, 0,
                                    self->width, self->height, 1);
            w = xrdp_painter_text_width(painter, self->caption1);
            h = xrdp_painter_text_height(painter, self->caption1);
            painter->fg_color = self->wm->black;
            xrdp_painter_draw_text(painter, self, (self->width / 2 - w / 2) + 1,
                                   (self->height / 2 - h / 2) + 1, self->caption1);

            if (self->parent != 0)
                if (self->wm->focused_window == self->parent)
                    if (self->parent->focused_control == self)
                        xrdp_bitmap_draw_focus_box(self, painter, 4, 4, self->width - 8,
                                                   self->height - 8);
        }
    }
    else if (self->type == WND_TYPE_IMAGE) /* 4 */
    {
        xrdp_painter_copy(painter, self, self, 0, 0, self->width,
                          self->height, 0, 0);
    }
    else if (self->type == WND_TYPE_EDIT) /* 5 */
    {
        /* draw gray box */
        painter->fg_color = self->wm->grey;
        xrdp_painter_fill_rect(painter, self, 0, 0, self->width, self->height);
        /* main white background */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 1, 1, self->width - 3,
                               self->height - 3);
        /* dark grey top line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, 0, 0, self->width, 1);
        /* dark grey left line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, 0, 0, 1, self->height);
        /* white bottom line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 0, self->height - 1, self->width, 1);
        /* white right line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, self->width - 1, 0, 1, self->height);
        /* black left line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, 1, 1, 1, self->height - 3);
        /* black top line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, 1, 1, self->width - 3, 1);
        /* draw text */
        painter->fg_color = self->wm->black;

        if (self->password_char != 0)
        {
            i = g_mbstowcs(0, self->caption1, 0);
            g_memset(text, self->password_char, i);
            text[i] = 0;
            xrdp_painter_draw_text(painter, self, 4, 2, text);
        }
        else
        {
            xrdp_painter_draw_text(painter, self, 4, 2, self->caption1);
        }

        /* draw xor box(cursor) */
        if (self->parent != 0)
        {
            if (self->parent->focused_control == self)
            {
                if (self->password_char != 0)
                {
                    wchar_repeat(wtext, 255, self->password_char, self->edit_pos);
                    wtext[self->edit_pos] = 0;
                    g_wcstombs(text, wtext, 255);
                }
                else
                {
                    g_mbstowcs(wtext, self->caption1, 255);
                    wtext[self->edit_pos] = 0;
                    g_wcstombs(text, wtext, 255);
                }

                w = xrdp_painter_text_width(painter, text);
                painter->fg_color = self->wm->white;
                painter->rop = 0x5a;
                xrdp_painter_fill_rect(painter, self, 4 + w, 3, 2, self->height - 6);
            }
        }

        /* reset rop back */
        painter->rop = 0xcc;
    }
    else if (self->type == WND_TYPE_LABEL) /* 6 */
    {
        painter->fg_color = self->wm->black;
        xrdp_painter_draw_text(painter, self, 0, 0, self->caption1);
    }
    else if (self->type == WND_TYPE_COMBO) /* 7 combo box */
    {
        /* draw gray box */
        painter->fg_color = self->wm->grey;
        xrdp_painter_fill_rect(painter, self, 0, 0, self->width, self->height);
        /* white background */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 1, 1, self->width - 3,
                               self->height - 3);

        if (self->parent->focused_control == self)
        {
            painter->fg_color = self->wm->dark_blue;
            xrdp_painter_fill_rect(painter, self, 3, 3, (self->width - 6) - 18,
                                   self->height - 5);
        }

        /* dark grey top line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, 0, 0, self->width, 1);
        /* dark grey left line */
        painter->fg_color = self->wm->dark_grey;
        xrdp_painter_fill_rect(painter, self, 0, 0, 1, self->height);
        /* white bottom line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 0, self->height - 1, self->width, 1);
        /* white right line */
        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, self->width - 1, 0, 1, self->height);
        /* black left line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, 1, 1, 1, self->height - 3);
        /* black top line */
        painter->fg_color = self->wm->black;
        xrdp_painter_fill_rect(painter, self, 1, 1, self->width - 3, 1);

        /* draw text */
        if (self->parent->focused_control == self)
        {
            painter->fg_color = self->wm->white;
        }
        else
        {
            painter->fg_color = self->wm->black;
        }

        xrdp_painter_draw_text(painter, self, 4, 2,
                               (char *)list_get_item(self->string_list, self->item_index));
        /* draw button on right */
        x = self->width - 20;
        y = 2;
        w = (self->width - x) - 2;
        h = self->height - 4;
        /* looks better with a background around */
        painter->fg_color = self->wm->grey;
        xrdp_painter_fill_rect(painter, self, x, y, w, h);

        if (self->state == BUTTON_STATE_UP) /* 0 */
        {
            xrdp_bitmap_draw_button(self, painter, x + 1, y + 1, w - 1, h - 1, 0);
        }
        else
        {
            xrdp_bitmap_draw_button(self, painter, x + 1, y + 1, w - 1, h - 1, 1);
        }

        /* draw the arrow */
        w = w / 2;
        x = x + (w / 2) + 1;
        h = (h / 2) + 2;
        y = y + (h / 2) + 1;
        painter->fg_color = self->wm->black;

        for (i = w; i > 0; i = i - 2)
        {
            xrdp_painter_fill_rect(painter, self, x, y, i, 1);
            y++;
            x = x + 1;
        }
    }
    else if (self->type == WND_TYPE_SPECIAL) /* 8 special */
    {
        if (self->popped_from != 0)
        {
            /* change height if there are too many items in the list */
            i = xrdp_painter_text_height(painter, "W");
            i = self->popped_from->string_list->count * i;

            if (i > self->height)
            {
                self->height = i;
            }
        }

        painter->fg_color = self->wm->white;
        xrdp_painter_fill_rect(painter, self, 0, 0, self->width, self->height);

        /* draw the list items */
        if (self->popped_from != 0)
        {
            y = 0;

            for (i = 0; i < self->popped_from->string_list->count; i++)
            {
                p = (char *)list_get_item(self->popped_from->string_list, i);
                h = xrdp_painter_text_height(painter, p);
                self->item_height = h;

                if (i == self->item_index)
                {
                    painter->fg_color = self->wm->blue;
                    xrdp_painter_fill_rect(painter, self, 0, y, self->width, h);
                    painter->fg_color = self->wm->white;
                }
                else
                {
                    painter->fg_color = self->wm->black;
                }

                xrdp_painter_draw_text(painter, self, 2, y, p);
                y = y + h;
            }
        }
    }

    /* notify */
    if (self->notify != 0)
    {
        self->notify(self, self, WM_PAINT, (long)painter, 0); /* 3 */
    }

    /* draw any child windows in the area */
    for (i = 0; i < self->child_list->count; i++)
    {
        b = (struct xrdp_bitmap *)list_get_item(self->child_list, i);

        if (rect == 0)
        {
            xrdp_bitmap_invalidate(b, 0);
        }
        else
        {
            MAKERECT(r1, b->left, b->top, b->width, b->height);

            if (rect_intersect(rect, &r1, &r2))
            {
                RECTOFFSET(r2, -(b->left), -(b->top));
                xrdp_bitmap_invalidate(b, &r2);
            }
        }
    }

    xrdp_painter_end_update(painter);
    xrdp_painter_delete(painter);
    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_bitmap_def_proc(struct xrdp_bitmap *self, int msg,
                     int param1, int param2)
{
    twchar c;
    int n;
    int i;
    int shift;
    int ext;
    int scan_code;
    int num_bytes;
    int num_chars;
    struct xrdp_bitmap *b;
    struct xrdp_bitmap *focus_out_control;

    if (self == 0)
    {
        return 0;
    }

    if (self->wm == 0)
    {
        return 0;
    }

    if (self->type == WND_TYPE_WND)
    {
        if (msg == WM_KEYDOWN)
        {
            scan_code = param1 % 128;

            if (scan_code == 15) /* tab */
            {
                /* move to next tab stop */
                shift = self->wm->keys[42] || self->wm->keys[54];
                i = -1;

                if (self->child_list != 0)
                {
                    i = list_index_of(self->child_list, (long)self->focused_control);
                }

                if (shift)
                {
                    i--;

                    if (i < 0)
                    {
                        i = self->child_list->count - 1;
                    }
                }
                else
                {
                    i++;

                    if (i >= self->child_list->count)
                    {
                        i = 0;
                    }
                }

                n = self->child_list->count;
                b = (struct xrdp_bitmap *)list_get_item(self->child_list, i);

                while (b != self->focused_control && b != 0 && n > 0)
                {
                    n--;

                    if (b->tab_stop)
                    {
                        focus_out_control = self->focused_control;
                        self->focused_control = b;
                        xrdp_bitmap_invalidate(focus_out_control, 0);
                        xrdp_bitmap_invalidate(b, 0);
                        break;
                    }

                    if (shift)
                    {
                        i--;

                        if (i < 0)
                        {
                            i = self->child_list->count - 1;
                        }
                    }
                    else
                    {
                        i++;

                        if (i >= self->child_list->count)
                        {
                            i = 0;
                        }
                    }

                    b = (struct xrdp_bitmap *)list_get_item(self->child_list, i);
                }
            }
            else if (scan_code == 28) /* enter */
            {
                if (self->default_button != 0)
                {
                    if (self->notify != 0)
                    {
                        /* I think this should use def_proc */
                        self->notify(self, self->default_button, 1, 0, 0);
                        return 0;
                    }
                }
            }
            else if (scan_code == 1) /* esc */
            {
                if (self->esc_button != 0)
                {
                    if (self->notify != 0)
                    {
                        /* I think this should use def_proc */
                        self->notify(self, self->esc_button, 1, 0, 0);
                        return 0;
                    }
                }
            }
        }

        if (self->focused_control != 0)
        {
            xrdp_bitmap_def_proc(self->focused_control, msg, param1, param2);
        }
    }
    else if (self->type == WND_TYPE_EDIT)
    {
        if (msg == WM_KEYDOWN)
        {
            scan_code = param1 % 128;
            ext = param2 & 0x0100;

            /* left or up arrow */
            if ((scan_code == 75 || scan_code == 72) &&
                    (ext || self->wm->num_lock == 0))
            {
                if (self->edit_pos > 0)
                {
                    self->edit_pos--;
                    xrdp_bitmap_invalidate(self, 0);
                }
            }
            /* right or down arrow */
            else if ((scan_code == 77 || scan_code == 80) &&
                     (ext || self->wm->num_lock == 0))
            {
                if (self->edit_pos < g_mbstowcs(0, self->caption1, 0))
                {
                    self->edit_pos++;
                    xrdp_bitmap_invalidate(self, 0);
                }
            }
            /* backspace */
            else if (scan_code == 14)
            {
                n = g_mbstowcs(0, self->caption1, 0);

                if (n > 0)
                {
                    if (self->edit_pos > 0)
                    {
                        self->edit_pos--;
                        remove_char_at(self->caption1, 255, self->edit_pos);
                        xrdp_bitmap_invalidate(self, 0);
                    }
                }
            }
            /* delete */
            else if (scan_code == 83  &&
                     (ext || self->wm->num_lock == 0))
            {
                n = g_mbstowcs(0, self->caption1, 0);

                if (n > 0)
                {
                    if (self->edit_pos < n)
                    {
                        remove_char_at(self->caption1, 255, self->edit_pos);
                        xrdp_bitmap_invalidate(self, 0);
                    }
                }
            }
            /* end */
            else if (scan_code == 79  &&
                     (ext || self->wm->num_lock == 0))
            {
                n = g_mbstowcs(0, self->caption1, 0);

                if (self->edit_pos < n)
                {
                    self->edit_pos = n;
                    xrdp_bitmap_invalidate(self, 0);
                }
            }
            /* home */
            else if ((scan_code == 71)  &&
                     (ext || (self->wm->num_lock == 0)))
            {
                if (self->edit_pos > 0)
                {
                    self->edit_pos = 0;
                    xrdp_bitmap_invalidate(self, 0);
                }
            }
            else
            {
                c = get_char_from_scan_code
                    (param2, scan_code, self->wm->keys, self->wm->caps_lock,
                     self->wm->num_lock, self->wm->scroll_lock,
                     &(self->wm->keymap));
                num_chars = g_mbstowcs(0, self->caption1, 0);
                num_bytes = g_strlen(self->caption1);

                if ((c >= 32) && (num_chars < 127) && (num_bytes < 250))
                {
                    add_char_at(self->caption1, 255, c, self->edit_pos);
                    self->edit_pos++;
                    xrdp_bitmap_invalidate(self, 0);
                }
            }
        }
    }
    else if (self->type == WND_TYPE_COMBO)
    {
        if (msg == WM_KEYDOWN)
        {
            scan_code = param1 % 128;
            ext = param2 & 0x0100;

            /* left or up arrow */
            if (((scan_code == 75) || (scan_code == 72)) &&
                    (ext || (self->wm->num_lock == 0)))
            {
                if (self->item_index > 0)
                {
                    self->item_index--;
                    xrdp_bitmap_invalidate(self, 0);

                    if (self->parent->notify != 0)
                    {
                        self->parent->notify(self->parent, self, CB_ITEMCHANGE, 0, 0);
                    }
                }
            }
            /* right or down arrow */
            else if ((scan_code == 77 || scan_code == 80) &&
                     (ext || self->wm->num_lock == 0))
            {
                if ((self->item_index + 1) < self->string_list->count)
                {
                    self->item_index++;
                    xrdp_bitmap_invalidate(self, 0);

                    if (self->parent->notify != 0)
                    {
                        self->parent->notify(self->parent, self, CB_ITEMCHANGE, 0, 0);
                    }
                }
            }
        }
    }
    else if (self->type == WND_TYPE_SPECIAL)
    {
        if (msg == WM_MOUSEMOVE)
        {
            if (self->item_height > 0 && self->popped_from != 0)
            {
                i = param2;
                i = i / self->item_height;

                if (i != self->item_index &&
                        i < self->popped_from->string_list->count)
                {
                    self->item_index = i;
                    xrdp_bitmap_invalidate(self, 0);
                }
            }
        }
        else if (msg == WM_LBUTTONUP)
        {
            if (self->popped_from != 0)
            {
                self->popped_from->item_index = self->item_index;
                xrdp_bitmap_invalidate(self->popped_from, 0);

                if (self->popped_from->parent->notify != 0)
                {
                    self->popped_from->parent->notify(self->popped_from->parent,
                                                      self->popped_from,
                                                      CB_ITEMCHANGE, 0, 0);
                }
            }
        }
    }

    return 0;
}

/*****************************************************************************/
/* convert the controls coords to screen coords */
int APP_CC
xrdp_bitmap_to_screenx(struct xrdp_bitmap *self, int x)
{
    int i;

    i = x;

    while (self != 0)
    {
        i = i + self->left;
        self = self->parent;
    }

    return i;
}

/*****************************************************************************/
/* convert the controls coords to screen coords */
int APP_CC
xrdp_bitmap_to_screeny(struct xrdp_bitmap *self, int y)
{
    int i;

    i = y;

    while (self != 0)
    {
        i = i + self->top;
        self = self->parent;
    }

    return i;
}

/*****************************************************************************/
/* convert the screen coords to controls coords */
int APP_CC
xrdp_bitmap_from_screenx(struct xrdp_bitmap *self, int x)
{
    int i;

    i = x;

    while (self != 0)
    {
        i = i - self->left;
        self = self->parent;
    }

    return i;
}

/*****************************************************************************/
/* convert the screen coords to controls coords */
int APP_CC
xrdp_bitmap_from_screeny(struct xrdp_bitmap *self, int y)
{
    int i;

    i = y;

    while (self != 0)
    {
        i = i - self->top;
        self = self->parent;
    }

    return i;
}

/*****************************************************************************/
int APP_CC
xrdp_bitmap_get_screen_clip(struct xrdp_bitmap *self,
                            struct xrdp_painter *painter,
                            struct xrdp_rect *rect,
                            int *dx, int *dy)
{
    int ldx;
    int ldy;

    if (painter->use_clip)
    {
        *rect = painter->clip;
    }
    else
    {
        rect->left = 0;
        rect->top = 0;
        rect->right = self->width;
        rect->bottom = self->height;
    }

    ldx = xrdp_bitmap_to_screenx(self, 0);
    ldy = xrdp_bitmap_to_screeny(self, 0);
    rect->left += ldx;
    rect->top += ldy;
    rect->right += ldx;
    rect->bottom += ldy;

    if (dx != 0)
    {
        *dx = ldx;
    }

    if (dy != 0)
    {
        *dy = ldy;
    }

    return 0;
}