24
24
#include "config.h"
25
25
#include "Arduino.h"
26
26
#include <avr/pgmspace.h>
32
static char _glyph_cache[ 8 ];
34
// the character the current cached glyph is for
35
static char _glyph_cache_char;
41
static unsigned char _output_buffer;
43
// does buffer need rendering?
44
static bool _need_render;
48
void cache_glyph( char c )
50
static char fonts[][ 67 * 8 ] PROGMEM = {
30
TextRenderer &TextRenderer::get_instance()
32
static TextRenderer text_renderer;
37
PString &TextRenderer::get_pstring()
41
_last_millis = ::millis();
42
_scroll = -TEXT_DISPLAY_SEGMENTS;
48
void TextRenderer::draw_reset()
50
// how many milliseconds have elapsed since last frame?
51
unsigned long millis = ::millis();
52
if( millis > _last_millis )
53
_duration = millis - _last_millis;
54
_last_millis = millis;
57
_scroll += ( _duration * TEXT_SCROLL_SPEED / 1000 );
58
if( _scroll > (signed long)_message.length() * 8 * TEXT_SCALE )
59
_scroll -= (signed long)_message.length() * 8 * TEXT_SCALE + TEXT_DISPLAY_SEGMENTS;
63
void TextRenderer::draw_scroll( int segment )
65
segment = xform_segment( segment );
69
render( (long)segment + _scroll );
73
TextRenderer::TextRenderer()
75
_message( _message_buffer, sizeof( _message_buffer ) ),
76
_glyph_cache_char( '\0' ),
82
int TextRenderer::xform_segment( int segment )
84
if( segment < TEXT_DISPLAY_SEGMENTS / 2 )
85
return segment + TEXT_DISPLAY_SEGMENTS / 2;
86
else if( segment >= NUM_SEGMENTS - TEXT_DISPLAY_SEGMENTS / 2 )
87
return segment - ( NUM_SEGMENTS - TEXT_DISPLAY_SEGMENTS / 2 );
93
void TextRenderer::render( int x )
106
char c = ( pos >= 0 && pos < (signed)_message.length() )? _message[ pos ] : ' ';
107
if( c != _glyph_cache_char ) {
108
_glyph_cache_char = c;
109
get_glyph( c, _glyph_cache );
113
char col_data = _glyph_cache[ x % 8 ];
114
for( int a = 0; a < 8; a++ )
115
Display::led( 8 - a, ( col_data & ( 1 << a ) )? true : false );
119
void TextRenderer::get_glyph( char c, char *glyph )
121
static char fonts[][ 66 * 8 ] PROGMEM = {
52
123
0x00, 0x7c, 0x7e, 0x12, 0x12, 0x12, 0x7e, 0x7c, // A
53
124
0x00, 0x7e, 0x7e, 0x4a, 0x4a, 0x4a, 0x7e, 0x34, // B
115
186
0x00, 0x00, 0x00, 0x6c, 0x6c, 0x00, 0x00, 0x00, // :
116
187
0x00, 0x00, 0x00, 0x60, 0x60, 0x00, 0x00, 0x00, // .
117
188
0x00, 0x00, 0x00, 0x80, 0xe0, 0x60, 0x00, 0x00, // ,
118
0x00, 0x00, 0x40, 0x20, 0x10, 0x08, 0x04, 0x00, // /
120
190
0x00, 0x7f, 0x7f, 0x09, 0x09, 0x09, 0x7f, 0x7f, // A
121
191
0x00, 0x7f, 0x7f, 0x49, 0x49, 0x49, 0x7f, 0x77, // B
183
253
0x00, 0x00, 0x00, 0x66, 0x66, 0x00, 0x00, 0x00, // :
184
254
0x00, 0x00, 0x00, 0x60, 0x60, 0x00, 0x00, 0x00, // .
185
255
0x00, 0x00, 0x80, 0xe0, 0x60, 0x00, 0x00, 0x00, // ,
186
0x00, 0x60, 0x30, 0x18, 0x0c, 0x06, 0x03, 0x00, // /
188
257
0x7c, 0x7e, 0x22, 0x7e, 0x7e, 0x7e, 0x7c, 0x00, // A
189
258
0x7c, 0x7e, 0x7e, 0x7e, 0x4a, 0x7e, 0x34, 0x00, // B
251
320
0x00, 0x00, 0x28, 0x7c, 0x7c, 0x28, 0x00, 0x00, // :
252
321
0x00, 0x00, 0x30, 0x78, 0x78, 0x30, 0x00, 0x00, // .
253
322
0x00, 0x00, 0x10, 0xb8, 0xf8, 0x70, 0x00, 0x00, // ,
254
0x60, 0x70, 0x38, 0x1c, 0x0e, 0x07, 0x03, 0x00, // /
256
324
0x00, 0x78, 0x7f, 0x09, 0x09, 0x0f, 0x78, 0x00, // A
257
325
0x00, 0x7f, 0x79, 0x49, 0x49, 0x4f, 0x78, 0x00, // B
319
387
0x00, 0x00, 0x00, 0x6c, 0x6c, 0x00, 0x00, 0x00, // :
320
388
0x00, 0x00, 0x00, 0x60, 0x60, 0x00, 0x00, 0x00, // .
321
389
0x00, 0x00, 0x00, 0x60, 0xe0, 0x00, 0x00, 0x00, // ,
322
0x00, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00, // /
327
if( c == _glyph_cache_char )
329
_glyph_cache_char = c;
331
// find glyph data position
333
394
if( c >= 'A' && c <= 'Z' )
345
406
else if( c == ',' )
352
// space? or copy glyph from progmem?
354
memset( _glyph_cache, 0, 8 );
356
memcpy_P( _glyph_cache, &( fonts[ _font ][ pos * 8 ] ), 8 );
360
void TextRenderer::init()
362
Nvram::load( Nvram::NVRAM_FONT, _font );
363
if( _font < 0 || _font >= 4 ) _font = 0;
367
int TextRenderer::get_width( int message_len, int scale )
369
return message_len * 8 * scale;
373
void TextRenderer::render( const char *message, int message_len, int x,
374
bool y_flip, int y_shift, int scale )
385
if( pos < message_len )
387
// ensure correct glyph is cached and pull out column of data
388
cache_glyph( message[ pos ] );
389
glyph_col = _glyph_cache[ x % 8 ];
395
for( int a = 7; a >= 0; a-- ) {
397
_output_buffer |= 1 << ( a + y_shift );
401
for( int a = 0; a < 8; a++ ) {
403
_output_buffer |= 1 << ( a + y_shift );
409
void TextRenderer::reset_buffer()
412
_need_render = false;
416
void TextRenderer::buffer_in_use()
422
void TextRenderer::output_buffer()
424
if( !_need_render ) return;
426
for( int a = 8; a >= 0; a-- ) {
427
led( a, ( _output_buffer & 1 )? true : false );
428
_output_buffer >>= 1;
434
int TextRenderer::get_font()
440
void TextRenderer::inc_font()
444
Nvram::save( Nvram::NVRAM_FONT, _font );
412
memset( glyph, 0, 8 );
414
memcpy_P( glyph, &( fonts[ _font ][ pos * 8 ] ), 8 );