Browse Source
* Improvements to FTDI DLCache functionality. * Better handling of long file names in Touch UI - Long file names now truncated and shown with ellipsis. - Increased display cache buffer to allow for longer filenames. - Visual error message when display cache is exceeded.vanilla_fb_2.0.x
Marcio T
4 years ago
committed by
Scott Lahteine
Scott Lahteine
9 changed files with 187 additions and 52 deletions
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/*********************
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* text_ellipsis.cpp * |
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*********************/ |
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/****************************************************************************
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* Written By Marcio Teixeira 2019 - Aleph Objects, Inc. * |
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* * |
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* This program is free software: you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation, either version 3 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* To view a copy of the GNU General Public License, go to the following * |
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* location: <https://www.gnu.org/licenses/>. *
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****************************************************************************/ |
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#include "ftdi_extended.h" |
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#ifdef FTDI_EXTENDED |
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namespace FTDI { |
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/**
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* Helper function for drawing text with ellipses. The str buffer may be modified and should have space for up to two extra characters. |
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*/ |
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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) { |
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FontMetrics fm(font); |
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const uint16_t ellipsisWidth = fm.get_char_width('.') * 3; |
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// Compute the total line length, as well as
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// the location in the string where it can
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// split and still allow the ellipsis to fit.
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uint16_t lineWidth = 0; |
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char *breakPoint = str; |
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for(char* c = str; *c; c++) { |
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lineWidth += fm.get_char_width(*c); |
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if(lineWidth + ellipsisWidth < w) |
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breakPoint = c; |
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} |
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if(lineWidth > w) { |
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*breakPoint = '\0'; |
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strcpy_P(breakPoint,PSTR("...")); |
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} |
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cmd.apply_text_alignment(x, y, w, h, options); |
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#ifdef TOUCH_UI_USE_UTF8 |
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if (has_utf8_chars(str)) { |
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draw_utf8_text(cmd, x, y, str, font_size_t::from_romfont(font), options); |
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} else |
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#endif |
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{ |
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cmd.CLCD::CommandFifo::text(x, y, font, options); |
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cmd.CLCD::CommandFifo::str(str); |
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} |
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} |
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/**
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* These functions draws text inside a bounding box, truncating the text and |
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* adding ellipsis if the text does not fit. |
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*/ |
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void draw_text_with_ellipsis(CommandProcessor& cmd, int x, int y, int w, int h, const char *str, uint16_t options, uint8_t font) { |
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char tmp[strlen(str) + 3]; |
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strcpy(tmp, str); |
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_draw_text_with_ellipsis(cmd, x, y, w, h, tmp, options, font); |
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} |
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void draw_text_with_ellipsis(CommandProcessor& cmd, int x, int y, int w, int h, progmem_str pstr, uint16_t options, uint8_t font) { |
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char tmp[strlen_P((const char*)pstr) + 3]; |
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strcpy_P(tmp, (const char*)pstr); |
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_draw_text_with_ellipsis(cmd, x, y, w, h, tmp, options, font); |
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} |
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} // namespace FTDI
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#endif // FTDI_EXTENDED
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/*******************
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* text_ellipsis.h * |
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*******************/ |
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/****************************************************************************
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* Written By Marcio Teixeira 2020 - SynDaver Labs, Inc. * |
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* * |
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* This program is free software: you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation, either version 3 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* To view a copy of the GNU General Public License, go to the following * |
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* location: <https://www.gnu.org/licenses/>. *
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****************************************************************************/ |
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#pragma once |
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/**
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* This function draws text inside a bounding box, truncating the text and |
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* showing ellipsis if it does not fit. |
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*/ |
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namespace FTDI { |
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void draw_text_with_ellipsis(class CommandProcessor& cmd, int x, int y, int w, int h, progmem_str str, uint16_t options = 0, uint8_t font = 31); |
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void draw_text_with_ellipsis(class CommandProcessor& cmd, int x, int y, int w, int h, const char *str, uint16_t options = 0, uint8_t font = 31); |
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} |
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