insert.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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 * 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 INSERT (instruction)
 
@english
 
The ''INSERT'' command can draw frames on the screen in text mode. The appearance 
of the frame is determined by the first parameter ''string''. It must contain a 
character string that is exactly nine characters long and consists of the characters
that define the frame: top left corner, top edge, top right corner, left edge, 
fill character, right edge, bottom left corner, bottom edge, bottom right corner. 
If this string is too long or too short, the behaviour is undefined.
 
@italian
 
Il comando ''INSERT'' può disegnare cornici sullo schermo in modalità testo. 
L'aspetto della cornice è determinato dal primo parametro ''string''. Deve contenere 
una stringa di caratteri lunga esattamente nove caratteri e composta dai caratteri 
che definiscono la cornice: angolo in alto a sinistra, bordo in alto, angolo in alto 
a destra, bordo sinistro, carattere di riempimento, bordo destro, angolo in basso a 
sinistra, bordo in basso, angolo in basso a destra. Se questa stringa è troppo lunga 
o troppo corta, il comportamento non è definito.
 
@syntax INSERT string, x, y, w, h, c
 
@example INSERT "+-+| |+-+", 0, 0, 10, 10, RED
 
@usedInExample tsb_insert_01.bas
 
</usermanual> */
 
void insert( Environment * _environment, char * _string, char * _x, char * _y, char * _w, char * _h, char * _c ) {
 
    MAKE_LABEL
 
    char topLabel[MAX_TEMPORARY_STORAGE]; sprintf( topLabel, "%stop", label );
    char lineLabel[MAX_TEMPORARY_STORAGE]; sprintf( lineLabel, "%sline", label );
    char edgeLabel[MAX_TEMPORARY_STORAGE]; sprintf( edgeLabel, "%sedge", label );
    char bottomLabel[MAX_TEMPORARY_STORAGE]; sprintf( bottomLabel, "%sbottom", label );
 
    Variable * string = variable_retrieve( _environment, _string );
    Variable * x = variable_retrieve_or_define( _environment, _x, VT_BYTE, 0 );
    Variable * y = variable_retrieve_or_define( _environment, _y, VT_BYTE, 0 );
    Variable * w = variable_retrieve_or_define( _environment, _w, VT_BYTE, 0 );
    Variable * h = variable_retrieve_or_define( _environment, _h, VT_BYTE, 0 );
    Variable * c = variable_retrieve_or_define( _environment, _c, VT_COLOR, 0 );
 
    Variable * tl = variable_string_pick( _environment, _string, 0 );
    Variable * te = variable_string_pick( _environment, _string, 1 );
    Variable * tr = variable_string_pick( _environment, _string, 2 );
    Variable * le = variable_string_pick( _environment, _string, 3 );
    Variable * fi = variable_string_pick( _environment, _string, 4 );
    Variable * re = variable_string_pick( _environment, _string, 5 );
    Variable * bl = variable_string_pick( _environment, _string, 6 );
    Variable * be = variable_string_pick( _environment, _string, 7 );
    Variable * br = variable_string_pick( _environment, _string, 8 );
 
    // With INSERT you can draw frames on the screen in text mode. The appearance of the frame
    // is determined by the first parameter <string>. It must contain a character string that is
    // exactly nine characters long and consists of the characters that define the frame: top left corner, 
    // top edge, top right corner, left edge, fill character, right edge, bottom left corner, bottom edge, 
    // bottom right corner. If this string is too long or too short, TSB reports an ILLEGAL QUANTITY ERROR.
 
    Variable * i = variable_temporary( _environment, VT_BYTE, "(i)" );
    Variable * j = variable_temporary( _environment, VT_BYTE, "(j)" );
 
    pen( _environment, c->name );
 
    locate( _environment, x->name, y->name );
    print( _environment, tl->name, 0, _environment->printRaw );
    variable_move( _environment, w->name, i->name );
    variable_decrement( _environment, i->name );
    variable_decrement( _environment, i->name );
    cpu_label( _environment, topLabel );
        print( _environment, te->name, 0, _environment->printRaw );
        variable_decrement( _environment, i->name );
        variable_compare_and_branch_const( _environment, i->name, 0, topLabel, _environment->printRaw );
    print( _environment, tr->name, 1, _environment->printRaw );
 
    variable_move( _environment, h->name, j->name );
    variable_decrement( _environment, j->name );
    variable_decrement( _environment, j->name );
    cpu_label( _environment, lineLabel );
        locate( _environment, x->name, NULL );
        variable_move( _environment, w->name, i->name );
        variable_decrement( _environment, i->name );
        variable_decrement( _environment, i->name );
        print( _environment, le->name, 0, _environment->printRaw );
            cpu_label( _environment, edgeLabel );
            print( _environment, fi->name, 0, _environment->printRaw );
            variable_decrement( _environment, i->name );
            variable_compare_and_branch_const( _environment, i->name, 0, edgeLabel, 0 );
        print( _environment, re->name, 1, _environment->printRaw );
        variable_decrement( _environment, j->name );
        variable_compare_and_branch_const( _environment, j->name, 0, lineLabel, 0 );
 
    locate( _environment, x->name, NULL );
    print( _environment, bl->name, 0, _environment->printRaw );
    variable_move( _environment, w->name, i->name );
    variable_decrement( _environment, i->name );
    variable_decrement( _environment, i->name );
    cpu_label( _environment, bottomLabel );
        print( _environment, be->name, 0, _environment->printRaw );
        variable_decrement( _environment, i->name );
        variable_compare_and_branch_const( _environment, i->name, 0, bottomLabel, 0 );
    print( _environment, br->name, 1, _environment->printRaw );
 
    // The next two parameters specify the location of the top left corner of the frame: <zl> = line 
    // (value range 0 to 23) and <sp> = column (value range 0 to 38). 
    // The following two determine its size: <bt> = width (value range 2 to 40) and <ho> = height (value range 2 to 25). If one of these values ​​is exceeded or undershot, the interpreter reports a BAD MODE ERROR. A width or height of 1 is still possible, but is automatically increased to 2 because otherwise no box can be created. A width or height of 2 omits the edges and only outputs the corners. The last parameter (<f>) defines the color of the frames (value range: 0..15).
 
}