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- /*********************
- * text_ellipsis.cpp *
- *********************/
-
- /****************************************************************************
- * Written By Marcio Teixeira 2019 - Aleph Objects, Inc. *
- * *
- * This program is free software: you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation, either version 3 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * To view a copy of the GNU General Public License, go to the following *
- * location: <https://www.gnu.org/licenses/>. *
- ****************************************************************************/
-
- #include "ftdi_extended.h"
-
- #if ENABLED(FTDI_EXTENDED)
-
- namespace FTDI {
-
- /**
- * Helper function for drawing text with ellipses. The str buffer may be modified and should have space for up to two extra characters.
- */
- static void _draw_text_with_ellipsis(CommandProcessor& cmd, int16_t x, int16_t y, int16_t w, int16_t h, char *str, uint16_t options, uint8_t font) {
- FontMetrics fm(font);
- const int16_t ellipsisWidth = fm.get_char_width('.') * 3;
-
- // Compute the total line length, as well as
- // the location in the string where it can
- // split and still allow the ellipsis to fit.
- int16_t lineWidth = 0;
- char *breakPoint = str;
- #ifdef TOUCH_UI_USE_UTF8
- char *tstr = str;
- while (*tstr) {
- breakPoint = tstr;
- const utf8_char_t c = get_utf8_char_and_inc(tstr);
- lineWidth += fm.get_char_width(c);
- if (lineWidth + ellipsisWidth < w)
- break;
- }
- #else
- for (char *c = str; *c; c++) {
- lineWidth += fm.get_char_width(*c);
- if (lineWidth + ellipsisWidth < w)
- breakPoint = c;
- }
- #endif
-
- if (lineWidth > w) {
- *breakPoint = '\0';
- strcpy_P(breakPoint,PSTR("..."));
- }
-
- cmd.apply_text_alignment(x, y, w, h, options);
- #if ENABLED(TOUCH_UI_USE_UTF8)
- if (has_utf8_chars(str)) {
- draw_utf8_text(cmd, x, y, str, font_size_t::from_romfont(font), options);
- } else
- #endif
- {
- cmd.CLCD::CommandFifo::text(x, y, font, options);
- cmd.CLCD::CommandFifo::str(str);
- }
- }
-
- /**
- * These functions draws text inside a bounding box, truncating the text and
- * adding ellipsis if the text does not fit.
- */
- void draw_text_with_ellipsis(CommandProcessor& cmd, int x, int y, int w, int h, const char *str, uint16_t options, uint8_t font) {
- char tmp[strlen(str) + 3];
- strcpy(tmp, str);
- _draw_text_with_ellipsis(cmd, x, y, w, h, tmp, options, font);
- }
-
- void draw_text_with_ellipsis(CommandProcessor& cmd, int x, int y, int w, int h, progmem_str pstr, uint16_t options, uint8_t font) {
- char tmp[strlen_P((const char*)pstr) + 3];
- strcpy_P(tmp, (const char*)pstr);
- _draw_text_with_ellipsis(cmd, x, y, w, h, tmp, options, font);
- }
- } // namespace FTDI
-
- #endif // FTDI_EXTENDED
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