kernel/emerg-print.cx at main · overcq/kernel · GitHub

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//-*-C-*-
/*******************************************************************************
*   ___   public
*  ¦OUX¦  C+
*  ¦/C+¦  OUX/C+ OS
*   ---   kernel
*         emergency print
* ©overcq                on ‟Gentoo Linux 17.1” “x86_64”             2021‒5‒16 L
*******************************************************************************/
_private B E_emerg_print_S_active;
_internal N32 E_emerg_print_S_x;
_internal N32 E_emerg_print_S_y;
_internal N32 E_emerg_print_S_color;
_internal N8 E_emerg_print_S_font_size;
_internal N8 E_emerg_print_S_font_thickness;
_internal N8 E_emerg_print_S_x_pre_post, E_emerg_print_S_y_pre_post;
_internal N32 E_emerg_print_S_background_color;
_internal N32 E_emerg_print_S_x_min, E_emerg_print_S_x_max, E_emerg_print_S_y_min;
//==============================================================================
_private
N
E_emerg_print_M( void
){  E_emerg_print_S_active = yes;
    E_emerg_print_S_font_size = 1;
    E_emerg_print_S_font_thickness = 1;
    E_emerg_print_S_x = E_emerg_print_S_font_thickness + 1;
    E_emerg_print_S_y = E_emerg_print_S_font_size + 1;
    E_emerg_print_S_x_pre_post = ( E_emerg_print_S_font_thickness + 1 + 2 ) / 3;
    E_emerg_print_S_y_pre_post = ( E_emerg_print_S_font_size + 1 + 2 ) / 3;
    E_emerg_print_S_color = E_vga_S_text_color;
    E_emerg_print_S_background_color = 0xffeff0;
    E_vga_I_fill_rect( 0, 0, E_main_S_framebuffer.width, E_main_S_framebuffer.height, E_vga_R_video_color( E_vga_S_background_color ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2 - 50, E_main_S_framebuffer.height / 2 - 10 - 13, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2 - 50, E_main_S_framebuffer.height / 2 - 10, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2, E_main_S_framebuffer.height / 2 + 4, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2, E_main_S_framebuffer.height / 2 + 4 + 13, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2 - 38, E_main_S_framebuffer.height / 2 - 37, 38 + 34, 37 + 36, E_vga_R_video_color( 0x43864f ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2 - 50, E_main_S_framebuffer.height / 2 + 4, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2 - 50, E_main_S_framebuffer.height / 2 + 4 + 13, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2, E_main_S_framebuffer.height / 2 - 10 - 13, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_I_fill_rect( E_main_S_framebuffer.width / 2, E_main_S_framebuffer.height / 2 - 10, 48, 5, E_vga_R_video_color( 0x2b2b2b ));
    E_vga_Q_buffer_I_draw( 0, 0, E_main_S_framebuffer.width, E_main_S_framebuffer.height );
    return E_emerg_print_I_print( "OUX/C+ OS ©overcq <overcq@int.pl> https:/""/github.com/overcq" );
}
_internal
void
E_emerg_print_I_scroll_fwd( N dy
){  E_mem_Q_blk_I_copy( E_vga_S_framebuffer
    , E_vga_S_framebuffer + dy * E_main_S_framebuffer.width
    , ( E_main_S_framebuffer.height - dy ) * E_main_S_framebuffer.width * sizeof( *E_vga_S_framebuffer )
    );
    E_vga_I_fill_rect( 0, E_main_S_framebuffer.height - dy, E_main_S_framebuffer.width, dy, E_vga_R_video_color( E_vga_S_background_color ));
    E_vga_Q_buffer_I_draw( 0, 0, E_main_S_framebuffer.width, E_main_S_framebuffer.height );
}
_private
void
E_emerg_print_I_print_nl( void
){  E_emerg_print_S_x = E_emerg_print_S_font_thickness + 1;
    E_emerg_print_S_x_min = E_emerg_print_S_x - E_emerg_print_S_x_pre_post;
    N32 y_next = E_emerg_print_S_y + ( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_font_size + 1;
    if( y_next > E_main_S_framebuffer.height - (( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_font_size + 1 ))
    {   E_emerg_print_I_scroll_fwd( y_next - ( E_main_S_framebuffer.height - (( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_font_size + 1 )));
        E_emerg_print_S_y = E_main_S_framebuffer.height - (( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_font_size + 1 );
    }else
        E_emerg_print_S_y = y_next;
    E_vga_I_fill_rect( 0
    , E_emerg_print_S_y - E_emerg_print_S_y_pre_post
    , E_emerg_print_S_x_pre_post
    , E_emerg_print_S_y_pre_post + ( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_y_pre_post
    , E_vga_R_video_color( E_emerg_print_S_background_color )
    );
}
_internal
void
E_emerg_print_I_print_u( U u
){  if( u == '\n' )
    {   E_emerg_print_I_print_nl();
        return;
    }
    N32 font_i;
    if( !E_font_T_print_u( E_main_S_framebuffer.width - E_emerg_print_S_x, E_emerg_print_S_font_thickness, &u, &font_i ))
        E_emerg_print_I_print_nl();
    N width = ( E_emerg_print_S_font_thickness + 1 ) * E_font_S_font.bitmap[ font_i ].width;
    E_vga_I_fill_rect( E_emerg_print_S_x - E_emerg_print_S_x_pre_post
    , E_emerg_print_S_y - E_emerg_print_S_y_pre_post
    , E_emerg_print_S_x_pre_post + width + E_emerg_print_S_x_pre_post
    , E_emerg_print_S_y_pre_post + ( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_y_pre_post
    , E_vga_R_video_color( E_emerg_print_S_background_color )
    );
    E_font_I_draw_u( font_i
    , E_emerg_print_S_x, E_emerg_print_S_y
    , 0, E_main_S_framebuffer.height
    , E_emerg_print_S_color
    , E_emerg_print_S_font_size, E_emerg_print_S_font_thickness
    );
    if( E_emerg_print_S_x_max < E_emerg_print_S_x + width + E_emerg_print_S_x_pre_post )
        E_emerg_print_S_x_max = E_emerg_print_S_x + width + E_emerg_print_S_x_pre_post;
    E_emerg_print_S_x += width + E_emerg_print_S_font_thickness + 1;
}
_private
N
E_emerg_print_I_print( Pc s
){  E_emerg_print_S_x_min = E_emerg_print_S_x_max = E_emerg_print_S_x - E_emerg_print_S_x_pre_post;
    E_emerg_print_S_y_min = E_emerg_print_S_y - E_emerg_print_S_y_pre_post;
    while( *s )
    {   U u = ~0;
        Pc s_ = E_text_Z_su_R_u( s, &u );
        if( s_ == s )
            return ~0;
        s = s_;
        if( ~u )
            E_emerg_print_I_print_u(u);
    }
    E_vga_Q_buffer_I_draw( E_emerg_print_S_x_min
    , E_emerg_print_S_y_min
    , E_emerg_print_S_x_max - E_emerg_print_S_x_min
    , E_emerg_print_S_y + ( E_emerg_print_S_font_size + 1 ) * E_font_S_font.height + E_emerg_print_S_y_pre_post - E_emerg_print_S_y_min
    );
    return 0;
}
_private
void
E_emerg_print_I_set_panic( void
){  E_emerg_print_S_x = E_emerg_print_S_font_thickness + 1;
    E_emerg_print_S_y = E_emerg_print_S_font_size + 1;
    E_emerg_print_S_background_color = 0x88;
    E_emerg_print_S_color = 0xffffff;
}
/******************************************************************************/