new_image.c

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/*****************************************************************************
 * ugBASIC - an isomorphic BASIC language compiler for retrocomputers        *
 *****************************************************************************
 * Copyright 2021-2026 Marco Spedaletti (asimov@mclink.it)
 *
 * 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.
 *----------------------------------------------------------------------------
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 * (la "Licenza"); è proibito usare questo file se non in conformità alla
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 * http://www.apache.org/licenses/LICENSE-2.0
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 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
 * il software distribuito nei termini della Licenza è distribuito
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/

/* <usermanual>
@keyword NEW IMAGE
 
@target all
</usermanual> */
Variable * new_image( Environment * _environment, int _width, int _height, int _mode ) {
 
    if ( _environment->emptyProcedure ) {
        Variable * emptyImage = variable_temporary( _environment, VT_IMAGE, "(empty)");
        return emptyImage;
    }
    
    Variable * result = variable_temporary( _environment, VT_IMAGE, "(new image)" );
 
    int size = 42;
 
    char * buffer = malloc ( size );
    memset( buffer, 0, size );
 
    *(buffer) = (_width & 0xff);
    *(buffer+1) = (_width>>8) & 0xff;
    *(buffer+2) = _height;
 
    result->valueBuffer = buffer;
    result->size = size;
 
    // Variable * result = // tms9918_new_image( _environment, _width, _height, _mode );
 
    return result;
 
}