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impl. "blink" effect

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This commit is contained in:
endym 2024-07-01 14:50:42 +02:00
parent 0141880577
commit 76b25ae449
2 changed files with 52 additions and 13 deletions
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63
esphome/components/max6921/display.cpp
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@ -320,6 +320,10 @@ void Display::update(void) {
// handle text effects...
if (this->disp_text_.effect != TEXT_EFFECT_NONE) { // any effect enabled?
switch (this->disp_text_.effect) {
case TEXT_EFFECT_BLINK:
update_out_buf_();
this->disp_text_.blink();
break;
case TEXT_EFFECT_SCROLL_LEFT:
update_out_buf_();
this->disp_text_.scroll_left();
@ -604,8 +608,8 @@ void DisplayText::init_text_effect_(void) {
this->visible_idx = 0;
this->visible_len = 1;
break;
case TEXT_EFFECT_NONE:
case TEXT_EFFECT_BLINK:
case TEXT_EFFECT_NONE:
default:
// Don't change display start position!
this->visible_idx = 0;
@ -672,6 +676,8 @@ void DisplayText::set_text_effect(text_effect_t effect, uint8_t cycle_num)
if (effect != this->effect) {
this->effect = effect;
this->cycle_num = cycle_num;
if (effect == TEXT_EFFECT_BLINK)
this->effect_change_count_ = -1;
init_text_effect_();
ESP_LOGD(TAG, "Set effect: text=%s, effect=%i, cycles=%u, start-pos=%u, max-pos=%u, vi-idx=%u, vi-len=%u",
this->text, this->effect, this->cycle_num, this->start_pos,
@ -707,23 +713,43 @@ void DisplayText::set_text_effect(const std::string& effect, uint8_t cycle_num)
}
/**
* @brief Updates the mode "scroll left".
* @brief Updates the mode "blink". The display buffer must be updated before.
*/
void DisplayText::blink(void) {
ESP_LOGV(TAG, "%s(): ENTRY: start-idx=%u, text-idx=%u, text-len=%u", __func__,
this->start_pos, this->visible_idx, this->visible_len);
// update effect mode...
if (++this->effect_change_count_ >= 2) { // one on/off phase complete?
this->effect_change_count_ = 0;
if (this->cycle_num > 0) {
ESP_LOGD(TAG, "Blink cycle finished (%u left)", this->cycle_num-1);
if (--this->cycle_num == 0) {
this->effect = TEXT_EFFECT_NONE;
ESP_LOGD(TAG, "Blink finished");
return;
}
}
}
// update visible text...
if (this->visible_len > 0) { // "on" phase?
this->visible_len = 0; // yes -> switch to "off" phase
} else {
init_text_effect_(); // no -> switch to "on" phase
}
ESP_LOGV(TAG, "%s(): EXIT: start-idx=%u, text-idx=%u, text-len=%u", __func__,
this->start_pos, this->visible_idx, this->visible_len);
}
/**
* @brief Updates the mode "scroll left". The display buffer must be updated before.
*/
void DisplayText::scroll_left(void) {
ESP_LOGV(TAG, "%s(): ENTRY: start-idx=%u, text-idx=%u, text-len=%u", __func__,
this->start_pos, this->visible_idx, this->visible_len);
// update visible text...
if (this->start_pos > 0) { // left display side not reached (scroll in from right side)?
--this->start_pos; // decrement display start position
if (this->visible_len < strlen(this->text))
++this->visible_len; // increment visible text length
} else {
++this->visible_idx; // increment visible start index
if ((this->visible_idx + this->visible_len) > strlen(this->text)) // visible part reached at end of text?
--this->visible_len; // decrement visible text length (scroll out to left side)
}
// update effect mode...
if (this->visible_len == 0) {
init_text_effect_();
@ -737,6 +763,17 @@ void DisplayText::scroll_left(void) {
}
}
// update visible text...
if (this->start_pos > 0) { // left display side not reached (scroll in from right side)?
--this->start_pos; // decrement display start position
if (this->visible_len < strlen(this->text))
++this->visible_len; // increment visible text length
} else {
++this->visible_idx; // increment visible start index
if ((this->visible_idx + this->visible_len) > strlen(this->text)) // visible part reached at end of text?
--this->visible_len; // decrement visible text length (scroll out to left side)
}
ESP_LOGV(TAG, "%s(): EXIT: start-idx=%u, text-idx=%u, text-len=%u", __func__,
this->start_pos, this->visible_idx, this->visible_len);
}

2
esphome/components/max6921/display.h
View file

@ -79,6 +79,7 @@ class DisplayText
text_effect_t effect;
uint8_t cycle_num;
DisplayText();
void blink(void);
void scroll_left(void);
int set_text(uint start_pos, uint max_pos, const std::string& text);
void set_text_align(text_align_t align);
@ -87,6 +88,7 @@ class DisplayText
void set_text_effect(const std::string& effect, uint8_t cycle_num=0);
protected:
int effect_change_count_;
void init_text_align_(void);
void init_text_effect_(void);
};