Jan/WLED_MM_Infinity
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finishing touches

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* replace strlen with strnlen
* avoid static variable in getFontInfo
* remove legacy code in drawCharacter (new code works well)

it works for me, let's ship it ;-)
This commit is contained in:
Frank
2025-11-21 17:26:04 +01:00
parent e6676372d8
commit e38c2b32c8
2 changed files with 6 additions and 26 deletions
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30
wled00/FX_2Dfcn.cpp
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@@ -886,7 +886,7 @@ bool Segment::jsonToPixels(char * name, uint8_t fileNr) {
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) {
if (!isActive()) return; // not active
//size_t maxLetters = WLED_MAX_SEGNAME_LEN;
const size_t numberOfChars = strlen((const char *) text); // size in bytes // toDo check if this is duplicate -> maxLen
const size_t numberOfChars = strnlen((const char *) text, maxLen); // size in bytes // toDo check if this is needed - duplicate of maxLen?
#if defined(WLED_ENABLE_FULL_FONTS)
FontInfo_t font = getFontInfo(w, h); // use central font selection legic
@@ -936,32 +936,12 @@ void Segment::drawCharacter(unsigned char chr, int16_t x, int16_t y, uint8_t w,
uint8_t bits = 0;
uint8_t bits_up = 0; // WLEDMM this is the previous line: font[(chr * h) + i -1]
#if 1
// new code - experimental
// for wide fonts, we can add a loop here :for(offset=0, offset < font.width_bytes; offset++) {}
// get 8 pixels (byte) from raw font data
bits = pgm_read_byte_near(&font.raw[(chr * h) + i]);
if ((i>0) && drawShadow) bits_up = pgm_read_byte_near(&font.raw[(chr * h) + i -1]);
#else
// legacy code, will be deleted after some tests
int pixels = w*h;
switch (pixels) { // 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; // 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]);
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]);
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]);
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]);
break; // 5x12 font
default: return;
}
#endif
if (col2 != BLACK) col = ColorFromPalette(grad, (i+1)*255/h, 255, NOBLEND);
uint32_t fgCol = uint32_t(col) & 0x00FFFFFF; // WLEDMM cache color value

2
wled00/wled_fonts.hpp
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@@ -31,7 +31,7 @@ typedef struct {
// logic for font selection based on width and height
inline FontInfo_t getFontInfo(unsigned width, unsigned height) {
static FontInfo_t font = {0}; // not sure if this needs to be static - just wanted to be sure that the function return value is not in the stack area (use-after-free).
FontInfo_t font = {0}; // will be returned by value
unsigned pixels = width * height;
switch (pixels) {