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t-echo lite - attempt to fix debounce and emoji gibberish

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pelgraine
2026-04-22 15:12:20 +10:00
parent 36976e0029
commit e74aa3b214
2 changed files with 33 additions and 13 deletions
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17
examples/companion_radio/ui-new/UITask.cpp
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@@ -1946,7 +1946,7 @@ if (curr) curr->poll();
// Without this floor, changing readings (battery, uptime) trigger
// back-to-back renders that cause continuous flashing.
#ifdef EINK_FULL_REFRESH_ONLY
unsigned long minNext = millis() + 60000; // Full refresh: 60s idle (clock ticks per minute)
unsigned long minNext = millis() + 300000; // Full refresh: 5 min idle
#else
unsigned long minNext = millis() + 800; // Partial refresh: 800ms floor
#endif
@@ -2482,9 +2482,24 @@ void UITask::injectKey(char c) {
if (_next_refresh < earliest) {
_next_refresh = earliest;
}
}
#ifdef EINK_FULL_REFRESH_ONLY
// Full-refresh displays (SSD1681): debounce printable character input.
// Compose typing (0x20-0x7E) pushes the render 2.5s into the future so
// the user can type a whole word before a ~2.2s full refresh fires.
// Navigation/special keys (arrows, enter, escape, etc.) refresh
// immediately so scrolling and screen changes remain responsive.
else if ((unsigned char)c >= 0x20 && (unsigned char)c <= 0x7E) {
unsigned long earliest = millis() + 2500;
if (_next_refresh < earliest) _next_refresh = earliest;
} else {
_next_refresh = 100; // navigation key — refresh now
}
#else
else {
_next_refresh = 100; // trigger refresh
}
#endif
}
}

29
src/helpers/ui/DisplayDriver.h
View File

@@ -48,21 +48,26 @@ public:
}
// Strip non-ASCII characters (emoji, etc.) from a UTF-8 string.
// Placeholder glyphs aren't safe across our fonts: GFXfonts (FreeSans)
// silently drop anything outside first..last, while the Adafruit built-in
// 5x7 font remaps c>=0xB0 by +1 so \xDB prints as ▄. Stripping the
// codepoint is the only behaviour that renders consistently across
// FastEPD (T5S3) and GxEPD (T-Deck Pro, T-Echo Lite, etc.) builds.
// Uses the same lead-byte-pattern approach as emojiDecodeUtf8() in
// EmojiSprites.h to determine sequence length, so both the channel
// message path (emojiSanitize) and the contact/advert name path
// consume identical byte spans for any given UTF-8 or malformed input.
virtual void translateUTF8ToBlocks(char* dest, const char* src, size_t dest_size) {
size_t j = 0;
for (size_t i = 0; src[i] != 0 && j < dest_size - 1; i++) {
size_t len = strlen(src);
for (size_t i = 0; i < len && j < dest_size - 1; ) {
unsigned char c = (unsigned char)src[i];
if (c >= 32 && c <= 126) {
dest[j++] = c; // ASCII printable
} else if (c >= 0x80) {
// Skip the whole UTF-8 codepoint (lead byte + continuation bytes)
while (src[i+1] && (src[i+1] & 0xC0) == 0x80)
i++;
if (c < 0x80) {
if (c >= 32) dest[j++] = c; // ASCII printable
i++;
} else {
// Determine sequence length from lead byte (matches emojiDecodeUtf8)
int skip;
if ((c & 0xE0) == 0xC0) skip = 2;
else if ((c & 0xF0) == 0xE0) skip = 3;
else if ((c & 0xF8) == 0xF0) skip = 4;
else skip = 1; // stray continuation or invalid
i += skip;
}
}
dest[j] = 0;