src/ui33.c


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#include "stdarg.h"
#include "stdio.h"
#include "string.h"

#include "types33.h"
#include "ui33.h"
#include "strings33.h"
#include "logger33.h"


#define _MBOX_SIZE 9
#define _PADDING 4
#define _SPACING 2


static char messageBox[ _MBOX_SIZE ][ _STRING_MAX ] = { 0, };
static Size head = 0;
static Size tail = 0;


Mouse33 __mouse = {0,};


void ui33_add_message( String fmt, ... )
{
  va_list args;
  va_start(args, fmt);

  vsnprintf( messageBox[tail++], _STRING_MAX, fmt, args );
  if( tail == _MBOX_SIZE ) tail = 0;
  if( tail == head ) ++head;
  if( head == _MBOX_SIZE ) head = 0;

  va_end(args);
}

void ui33_draw_messages( void )
{
  Size fontHeight = defFont.h;
  Size stringCoord = __display.surface.h - _PADDING - fontHeight;

  Size i = tail-1;
  do {
    if( i < 0 ) i = _MBOX_SIZE-1;
    QPRINT( messageBox[i], _PADDING, stringCoord );
    stringCoord -= (_SPACING + fontHeight);
  } while( (i--) != head );
}

void ui33_draw_mouse( void )
{
  Size x = __mouse.x;
  Size y = __mouse.y;
  Size w = __display.surface.w;

  __display.surface.data[ x + y * w ] = YELLOW;
}