Bitmap.c

/*
        Advanved Dialogs v1.0.7
        Copyright (C) 2005-2008 Jonas Gehring

        Advanced Dialogs is free software; you can redistribute it and/or modify
        it under the terms of the GNU Lesser General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.

        Advanced Dialogs is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU Lesser General Public License for more details.

        You should have received a copy of the GNU Lesser General Public License
        along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/


// C Source File
// Created 17.01.2006; 06:44:40


#include <gray.h>

#include "AdvDialogs.h"                                                 // This should be obvious ;)


// Frees a Bitmap
void FreeBitmap(ADVBITMAP *bitmap)
{
        free(bitmap->data);
        free(bitmap);
}


// Creates a new Bitmap
ADVBITMAP *AdvDlgBitmapNew(short width, short height, const unsigned char *lpdata, const unsigned char *dpdata)
{
        ADVBITMAP *bitmap;
        short size = (height*width) >> 3;

        // Allocate space
        if ((bitmap = malloc(sizeof(ADVBITMAP))) == NULL)
        {
                return NULL;
        }
        if ((bitmap->data = malloc((BITMAP_HDR_SIZE + size)*2)) == NULL)
        {
                free(bitmap);
                return NULL;
        }
        
        BITMAP *t = (BITMAP *)((char*)bitmap->data + BITMAP_HDR_SIZE + size);

        t->NumRows = bitmap->data->NumRows = height;
        t->NumCols = bitmap->data->NumCols = width;
        
        memcpy(bitmap->data->Data, lpdata, size);
        memcpy(t->Data, dpdata, size);

        return bitmap;
}


// Draws a Bitmap
void DrawBitmap(ADVDIALOG *dialog, ADVBITMAP *bitmap)
{
        // Draw Light Plane contents
        GraySetAMSPlane(LIGHT_PLANE);
        BitmapPut((dialog->left_x + bitmap->x), (dialog->top_y + bitmap->y),
                           bitmap->data,
                           &(SCR_RECT){{dialog->left_x, dialog->top_y, dialog->right_x, dialog->bottom_y}},
                           A_REPLACE);
                           
        // Draw Dark Plane contents
        GraySetAMSPlane(DARK_PLANE);
        BitmapPut((dialog->left_x + bitmap->x), (dialog->top_y + bitmap->y),
                           (BITMAP *)((char*)bitmap->data + BITMAP_HDR_SIZE + ((bitmap->data->NumRows*bitmap->data->NumCols) >> 3)),
                           &(SCR_RECT){{dialog->left_x, dialog->top_y, dialog->right_x, dialog->bottom_y}},
                           A_REPLACE);

}

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