You've already forked TEF6686_ESP32
105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
#pragma once
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#include <Arduino.h>
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#include <TFT_eSPI.h>
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class ScrollingTextDisplay {
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private:
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TFT_eSprite* sprite;
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int yPos;
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int maxWidth;
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int xPos;
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int textWidth;
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unsigned long lastTick;
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unsigned long holdTick;
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bool isScrolling;
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std::function<void(TFT_eSprite*, bool)> postDrawCallback;
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int usedH;
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bool hold;
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int xOffset;
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static const unsigned long SCROLL_INTERVAL = 5;
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static const unsigned long HOLD_DURATION = 2000;
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static const int SCROLL_GAP = 25;
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public:
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ScrollingTextDisplay(TFT_eSprite* spr, int y, int maxW, int x = 35, int inuseH = -1 ) :
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sprite(spr), yPos(y), maxWidth(maxW), xPos(0), textWidth(0), lastTick(0), holdTick(0), isScrolling(false), postDrawCallback(nullptr), usedH(inuseH), hold(false), xOffset(x) {}
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void setPostDrawCallback(std::function<void(TFT_eSprite*, bool)> callback) {
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postDrawCallback = callback;
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}
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void update(const String& text, bool status, uint16_t activeColor, uint16_t activeSmooth, uint16_t dropoutColor, uint16_t dropoutSmooth, uint16_t backgroundColor) {
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textWidth = sprite->textWidth(text);
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if(textWidth < maxWidth) {
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xPos = 0;
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isScrolling = false;
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drawText(text, status, activeColor, activeSmooth, dropoutColor, dropoutSmooth, backgroundColor);
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} else {
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if(!isScrolling) holdTick = millis();
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isScrolling = true;
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if(millis() - lastTick >= SCROLL_INTERVAL) {
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if(xPos <= -(textWidth + SCROLL_GAP)) {xPos += textWidth + SCROLL_GAP; hold = true;}
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if(hold) {
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if(millis() - holdTick >= HOLD_DURATION) {
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xPos--;
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holdTick = millis();
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hold = false;
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}
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} else {
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xPos--;
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holdTick = millis();
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}
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drawText(text, status, activeColor, activeSmooth, dropoutColor, dropoutSmooth, backgroundColor);
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lastTick = millis();
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}
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}
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}
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void reset() {
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xPos = 0;
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holdTick = millis();
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lastTick = millis();
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}
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void setYPosition(int y) {
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yPos = y;
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}
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bool getIsScrolling() const {
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return isScrolling;
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}
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private:
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void drawText(const String& text, bool status, uint16_t activeColor, uint16_t activeSmooth, uint16_t dropoutColor, uint16_t dropoutSmooth, uint16_t backgroundColor) {
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if(usedH > 0) {
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sprite->fillSprite(TFT_TRANSPARENT);
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sprite->fillRect(0, 0, maxWidth, usedH, backgroundColor);
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sprite->setViewport(0, 0, maxWidth, usedH);
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if(status) sprite->setTextColor(activeColor, activeSmooth, false);
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else sprite->setTextColor(dropoutColor, dropoutSmooth, false);
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sprite->drawString(text, xPos, 0);
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if(isScrolling) sprite->drawString(text, xPos + textWidth + SCROLL_GAP, 0);
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sprite->resetViewport();
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} else {
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sprite->fillSprite(backgroundColor);
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if(status) sprite->setTextColor(activeColor, activeSmooth, false);
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else sprite->setTextColor(dropoutColor, dropoutSmooth, false);
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sprite->drawString(text, xPos, 0);
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if(isScrolling) sprite->drawString(text, xPos + textWidth + SCROLL_GAP, 0);
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}
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if(postDrawCallback) postDrawCallback(sprite, false);
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if(yPos != 0) sprite->pushSprite(xOffset, yPos, TFT_TRANSPARENT);
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}
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}; |