/*
Description:
Draw a line with "cnt" pixel as fore- or background color.
Args:
cnt: Length of the line
is_foreground foreground/background?
ucg->font_decode.target_x X position
ucg->font_decode.target_y Y position
ucg->font_decode.is_transparent Transparent mode
Return:
-
Calls:
ucg_font_decode_draw_pixel()
Called by:
ucg_font_decode_len()
*/
void ICACHE_FLASH_ATTR ucg_font_decode_draw_pixel(ucg_t *ucg, uint8_t lx, uint8_t ly, uint8_t cnt, uint8_t is_foreground)
{
ucg_int_t x, y;
ucg_font_decode_t *decode = &(ucg->font_decode);
x = decode->target_x;
y = decode->target_y;
x = ucg_add_vector_x(x, lx, ly, decode->dir);
y = ucg_add_vector_y(y, lx, ly, decode->dir);
//ucg_add_vector(&x, &y, ucg->font_decode.x, ucg->font_decode.y, ucg->font_decode.dir);
if ( is_foreground )
{
ucg_Draw90Line(ucg,
x,
y,
cnt,
/* dir */ decode->dir,
/* col_idx */ 0);
}
else if ( decode->is_transparent == 0 )
{
ucg_Draw90Line(ucg,
x,
y,
cnt,
/* dir */ decode->dir,
/* col_idx */ 1);
}
}
// Lua: ucg.draw90Line( self, x, y, len, dir, col_idx )
static int lucg_draw90Line( lua_State *L )
{
lucg_userdata_t *lud;
if ((lud = get_lud( L )) == NULL)
return 0;
ucg_int_t args[5];
lucg_get_int_args( L, 2, 5, args );
ucg_Draw90Line( LUCG, args[0], args[1], args[2], args[3], args[4] );
return 0;
}
void ucg_DrawHRLine(ucg_t *ucg, ucg_int_t x, ucg_int_t y, ucg_int_t len)
{
ucg_Draw90Line(ucg, x, y, len, 2, 0);
}
ucg_int_t ucg_draw_solid_glyph(ucg_t *ucg, ucg_int_t x, ucg_int_t y, uint8_t dir, uint8_t encoding)
{
const ucg_pgm_uint8_t *data;
uint8_t j;
ucg_int_t dx, dy;
uint8_t bytes_per_line;
ucg_int_t above;
ucg_int_t below;
ucg_int_t right;
ucg_int_t left;
{
ucg_glyph_t g = ucg_GetGlyph(ucg, encoding);
if ( g == NULL )
return 0;
data = ucg_font_GetGlyphDataStart(ucg->font, g);
}
above = ucg->font_ref_ascent;
above -= ucg->glyph_height;
above -= ucg->glyph_y;
if ( above < 0 )
above = 0;
below = ucg->font_ref_descent;
below -= ucg->glyph_y;
if ( below > 0 )
below = 0;
right = ucg->glyph_dx;
right -= ucg->glyph_width;
right -= ucg->glyph_x;
if ( right < 0 )
right = 0;
left = ucg->glyph_x;
if ( left < 0 )
left = 0;
bytes_per_line = ucg->glyph_width;
bytes_per_line += 7;
bytes_per_line /= 8;
dx = 0;
dy = 0;
switch(dir)
{
case 0:
x += ucg->glyph_x;
y -= ucg->glyph_y;
y -= ucg->glyph_height;
y -= above; /* solid */
dy = 1;
break;
case 1:
x += ucg->glyph_y;
y += ucg->glyph_x;
x += ucg->glyph_height;
x += above; /* solid */
dx = -1;
break;
case 2:
x -= ucg->glyph_x;
y += ucg->glyph_y;
y += ucg->glyph_height;
y += above; /* solid */
dy = -1;
break;
case 3:
x -= ucg->glyph_y;
y -= ucg->glyph_x;
x -= ucg->glyph_height;
x -= above; /* solid */
dx = 1;
break;
}
while( above > 0 )
{
ucg_Draw90Line(ucg, x, y, ucg->glyph_width, dir, 1);
y+=dy;
x+=dx;
above--;
}
for( j = 0; j < ucg->glyph_height; j++ )
{
ucg_DrawBitmapLine(ucg, x, y, dir, ucg->glyph_width, data);
data += bytes_per_line;
y+=dy;
x+=dx;
}
while( below < 0 )
{
ucg_Draw90Line(ucg, x, y, ucg->glyph_width, dir, 1);
y+=dy;
x+=dx;
below++;
}
y-=dy;
x-=dx;
for( j = 0; j < left; j++ )
{
x-=dy;
y-=dx;
ucg_Draw90Line(ucg, x, y, ucg->font_ref_ascent-ucg->font_ref_descent, (dir+3)&3, 1);
}
x+=dy*(ucg->glyph_width+left);
y+=dx*(ucg->glyph_width+left);
while( right > 0 )
{
ucg_Draw90Line(ucg, x, y, ucg->font_ref_ascent-ucg->font_ref_descent, (dir+3)&3, 1);
x+=dy;
y+=dx;
right--;
}
return ucg->glyph_dx;
}
/* optimized */
void ICACHE_FLASH_ATTR ucg_font_decode_len(ucg_t *ucg, uint8_t len, uint8_t is_foreground)
{
uint8_t cnt; /* total number of remaining pixels, which have to be drawn */
uint8_t rem; /* remaining pixel to the right edge of the glyph */
uint8_t current; /* number of pixels, which need to be drawn for the draw procedure */
/* current is either equal to cnt or equal to rem */
/* local coordinates of the glyph */
uint8_t lx,ly;
/* target position on the screen */
ucg_int_t x, y;
ucg_font_decode_t *decode = &(ucg->font_decode);
cnt = len;
/* get the local position */
lx = decode->x;
ly = decode->y;
for(;;)
{
/* calculate the number of pixel to the right edge of the glyph */
rem = decode->glyph_width;
rem -= lx;
/* calculate how many pixel to draw. This is either to the right edge */
/* or lesser, if not enough pixel are left */
current = rem;
if ( cnt < rem )
current = cnt;
/* now draw the line, but apply the rotation around the glyph target position */
//ucg_font_decode_draw_pixel(ucg, lx,ly,current, is_foreground);
/* get target position */
x = decode->target_x;
y = decode->target_y;
/* apply rotation */
x = ucg_add_vector_x(x, lx, ly, decode->dir);
y = ucg_add_vector_y(y, lx, ly, decode->dir);
/* draw foreground and background (if required) */
if ( is_foreground )
{
ucg_Draw90Line(ucg,
x,
y,
current,
/* dir */ decode->dir,
/* col_idx */ 0);
}
else if ( decode->is_transparent == 0 )
{
ucg_Draw90Line(ucg,
x,
y,
current,
/* dir */ decode->dir,
/* col_idx */ 1);
}
/* check, whether the end of the run length code has been reached */
if ( cnt < rem )
break;
cnt -= rem;
lx = 0;
ly++;
}
//ucg_font_decode_draw_pixel(ucg, x,y, cnt, is_foreground);
lx += cnt;
decode->x = lx;
decode->y = ly;
}
