Jan/WLED_MM_Infinity
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* idea seems to work
* scrolling is broken, probably I need to create a unicode-aware ``strlen``
This commit is contained in:
Frank
2025-11-20 13:57:55 +01:00
parent 0a593b4d39
commit 45f793b338
3 changed files with 52 additions and 23 deletions
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50
wled00/FX_2Dfcn.cpp
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@@ -892,25 +892,33 @@ bool Segment::jsonToPixels(char * name, uint8_t fileNr) {
#endif
// unicode-aware wrapper for drawCharacter(), to be called from mode_2Dscrollingtext()
void Segment::drawText(const unsigned char* text, size_t maxLen, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2, bool drawShadow) {
size_t textLength = min(maxLen, size_t(WLED_MAX_SEGNAME_LEN));
void Segment::drawText(const unsigned char* text, size_t maxLen, int maxLetters, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2, bool drawShadow) {
if (!isActive()) return; // not active
// ToDO: find font _first/_last, based on width / height
#if defined(WLED_ENABLE_FULL_FONTS)
uint16_t decoded_text[WLED_MAX_SEGNAME_LEN+1] = { 0 }; // UTF-16 converted text. Cannot be longer than WLED_MAX_SEGNAME_LEN
size_t utf16_index = 0;
for(const unsigned char* now = text; now != nullptr && now[0] != 0; now = nextUnicode(now, maxLen)) {
decoded_text[utf16_index] = unicodeToWchar16(now, maxLen); // UTF-8 decode into decoded_text
decoded_text[utf16_index] = wchar16ToCodepage437(decoded_text[utf16_index]); // decoded_text to CP437 (in-place conversion)
// toDo: ensure that decoded_text[i] is between console_font_YxZ_first and console_font_YxZ_last
// if (chr < 32 || chr > 126) --> clamp chr
// chr -= 32; // align with font table entries
utf16_index++;
for(const unsigned char* now = text; now != nullptr && now[0] != '\0'; now = nextUnicode(now, maxLen)) {
if (utf16_index <= WLED_MAX_SEGNAME_LEN) {
decoded_text[utf16_index] = unicodeToWchar16(now, maxLen); // UTF-8 decode into decoded_text
decoded_text[utf16_index] = wchar16ToCodepage437(decoded_text[utf16_index]); // decoded_text to CP437 (in-place conversion)
// toDo: ensure that decoded_text[i] is between console_font_YxZ_first and console_font_YxZ_last
// if (chr < 32 || chr > 126) --> clamp chr
// chr -= 32; // align with font table entries
utf16_index++;
}
}
decoded_text[utf16_index] = 0; // NUL terminate string
size_t textLength = min(utf16_index, size_t(maxLetters));
#else
const unsigned char* decoded_text = text; // fallback
size_t textLength = min(strnlen((char*)text, maxLen), size_t(maxLetters));
#endif
// ToDO: pass decoded characters to drawCharacter()
// pass characters to drawCharacter()
for (int i = 0; i < textLength; i++) {
SEGMENT.drawCharacter((unsigned char) decoded_text[i], x + w*i, y, w, h, color, col2, drawShadow);
}
}
// draws a raster font character on canvas
@@ -918,10 +926,14 @@ void Segment::drawText(const unsigned char* text, size_t maxLen, int16_t x, int1
void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w, uint8_t h, uint32_t color, uint32_t col2, bool drawShadow) {
if (!isActive()) return; // not active
#if !defined(WLED_ENABLE_FULL_FONTS)
constexpr int space = 0; // font index of " " (space)
if (chr < 32 || chr > 126) return; // legacy mode - only ASCII 32-126 supported
chr -= 32; // align with font table entries
#else
// ToDO: clamp to font limits
constexpr int space = 31; // font index of " "
// ToDO: clamp to actual font limits
if (chr < 1 || chr > 254) return; // sanity check // ToDO needs improvements
chr = chr -1; // all fonts start at 1 // ToDO needs improvements
#endif
const uint16_t cols = virtualWidth();
@@ -935,7 +947,7 @@ void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w,
//if (w<5 || w>6 || h!=8) return;
if (drawShadow) w++; // one more column for shadow on right side
for (int i = 0; i<h; i++) { // character height
int16_t y0 = y + i;
int y0 = y + i;
if (y0 < 0) continue; // drawing off-screen
if (y0 >= rows) break; // drawing off-screen
uint8_t bits = 0;
@@ -945,19 +957,19 @@ void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w,
switch (font) { // font = w * h
case 24: bits = pgm_read_byte_near(&console_font_4x6[(chr * h) + i]);
if ((i>0) && drawShadow) bits_up = pgm_read_byte_near(&console_font_4x6[(chr * h) + i -1]);
break; // 5x8 font
if ((i>space) && drawShadow) bits_up = pgm_read_byte_near(&console_font_4x6[(chr * h) + i -1]);
break; // 4x6 font
case 40: bits = pgm_read_byte_near(&console_font_5x8[(chr * h) + i]);
if ((i>0) && drawShadow) bits_up = pgm_read_byte_near(&console_font_5x8[(chr * h) + i -1]);
if ((i>space) && drawShadow) bits_up = pgm_read_byte_near(&console_font_5x8[(chr * h) + i -1]);
break; // 5x8 font
case 48: bits = pgm_read_byte_near(&console_font_6x8[(chr * h) + i]);
if ((i>0) && drawShadow) bits_up = pgm_read_byte_near(&console_font_6x8[(chr * h) + i -1]);
if ((i>space) && drawShadow) bits_up = pgm_read_byte_near(&console_font_6x8[(chr * h) + i -1]);
break; // 6x8 font
case 63: bits = pgm_read_byte_near(&console_font_7x9[(chr * h) + i]);
if ((i>0) && drawShadow) bits_up = pgm_read_byte_near(&console_font_7x9[(chr * h) + i -1]);
if ((i>space) && drawShadow) bits_up = pgm_read_byte_near(&console_font_7x9[(chr * h) + i -1]);
break; // 7x9 font
case 60: bits = pgm_read_byte_near(&console_font_5x12[(chr * h) + i]);
if ((i>0) && drawShadow) bits_up = pgm_read_byte_near(&console_font_5x12[(chr * h) + i -1]);
if ((i>space) && drawShadow) bits_up = pgm_read_byte_near(&console_font_5x12[(chr * h) + i -1]);
break; // 5x12 font
default: return;
}
@@ -965,7 +977,7 @@ void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w,
uint32_t fgCol = uint32_t(col) & 0x00FFFFFF; // WLEDMM cache color value
for (int j = 0; j<w; j++) { // character width
int16_t x0 = x + (w-1) - j;
int x0 = x + (w-1) - j;
if (unsigned(x0) < cols) { // WLEDMM same as "x0 > 0 && x0 < cols"
if ((bits>>(j+(8-w))) & 0x01) { // bit set & drawing on-screen
setPixelColorXY(x0, y0, fgCol);