108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
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/***************************************************************************************
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** Code for the GFX button UI element
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** Grabbed from Adafruit_GFX library and enhanced to handle any label font
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***************************************************************************************/
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TFT_eSPI_Button::TFT_eSPI_Button(void) {
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_gfx = nullptr;
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_xd = 0;
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_yd = 0;
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_textdatum = MC_DATUM;
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_label[9] = '\0';
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currstate = false;
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laststate = false;
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}
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// Classic initButton() function: pass center & size
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void TFT_eSPI_Button::initButton(
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TFT_eSPI *gfx, int16_t x, int16_t y, uint16_t w, uint16_t h,
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uint16_t outline, uint16_t fill, uint16_t textcolor,
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char *label, uint8_t textsize)
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{
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// Tweak arguments and pass to the newer initButtonUL() function...
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initButtonUL(gfx, x - (w / 2), y - (h / 2), w, h, outline, fill,
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textcolor, label, textsize);
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}
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// Newer function instead accepts upper-left corner & size
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void TFT_eSPI_Button::initButtonUL(
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TFT_eSPI *gfx, int16_t x1, int16_t y1, uint16_t w, uint16_t h,
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uint16_t outline, uint16_t fill, uint16_t textcolor,
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char *label, uint8_t textsize)
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{
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_x1 = x1;
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_y1 = y1;
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_w = w;
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_h = h;
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_outlinecolor = outline;
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_fillcolor = fill;
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_textcolor = textcolor;
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_textsize = textsize;
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_gfx = gfx;
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strncpy(_label, label, 9);
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}
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// Adjust text datum and x, y deltas
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void TFT_eSPI_Button::setLabelDatum(int16_t x_delta, int16_t y_delta, uint8_t datum)
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{
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_xd = x_delta;
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_yd = y_delta;
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_textdatum = datum;
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}
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void TFT_eSPI_Button::drawButton(bool inverted, String long_name) {
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uint16_t fill, outline, text;
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if(!inverted) {
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fill = _fillcolor;
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outline = _outlinecolor;
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text = _textcolor;
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} else {
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fill = _textcolor;
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outline = _outlinecolor;
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text = _fillcolor;
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}
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uint8_t r = min(_w, _h) / 4; // Corner radius
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_gfx->fillRoundRect(_x1, _y1, _w, _h, r, fill);
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_gfx->drawRoundRect(_x1, _y1, _w, _h, r, outline);
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if (_gfx->textfont == 255) {
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_gfx->setCursor(_x1 + (_w / 8),
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_y1 + (_h / 4));
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_gfx->setTextColor(text);
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_gfx->setTextSize(_textsize);
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_gfx->print(_label);
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}
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else {
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_gfx->setTextColor(text, fill);
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_gfx->setTextSize(_textsize);
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uint8_t tempdatum = _gfx->getTextDatum();
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_gfx->setTextDatum(_textdatum);
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uint16_t tempPadding = _gfx->getTextPadding();
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_gfx->setTextPadding(0);
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if (long_name == "")
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_gfx->drawString(_label, _x1 + (_w/2) + _xd, _y1 + (_h/2) - 4 + _yd);
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else
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_gfx->drawString(long_name, _x1 + (_w/2) + _xd, _y1 + (_h/2) - 4 + _yd);
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_gfx->setTextDatum(tempdatum);
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_gfx->setTextPadding(tempPadding);
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}
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}
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bool TFT_eSPI_Button::contains(int16_t x, int16_t y) {
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return ((x >= _x1) && (x < (_x1 + _w)) &&
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(y >= _y1) && (y < (_y1 + _h)));
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}
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void TFT_eSPI_Button::press(bool p) {
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laststate = currstate;
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currstate = p;
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}
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bool TFT_eSPI_Button::isPressed() { return currstate; }
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bool TFT_eSPI_Button::justPressed() { return (currstate && !laststate); }
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bool TFT_eSPI_Button::justReleased() { return (!currstate && laststate); }
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