FTDI EVE: Cyrillic font and some minor fixes

Marlin/Configuration_adv.h

@@ -1563,6 +1563,9 @@
       //#define TOUCH_UI_UTF8_FRACTIONS     // ¼ ½ ¾
       //#define TOUCH_UI_UTF8_SYMBOLS       // µ ¶ ¦ § ¬
     #endif
+
+    // Cyrillic character set, costs about 27KiB of flash
+    //#define TOUCH_UI_UTF8_CYRILLIC_CHARSET
   #endif
 
   // Use a smaller font when labels don't fit buttons

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/basic/commands.cpp

@@ -211,6 +211,14 @@ void CLCD::mem_write_32(uint32_t reg_address, uint32_t data) {
   spi_ftdi_deselect();
 }
 
+// Fill area of len size with repeated data bytes
+void CLCD::mem_write_fill(uint32_t reg_address, uint8_t data, uint16_t len) {
+  spi_ftdi_select();
+  spi_write_addr(reg_address);
+  while (len--) spi_write_8(data);
+  spi_ftdi_deselect();
+}
+
 /******************* FT800/810 Co-processor Commands *********************************/
 
 #if FTDI_API_LEVEL == 800

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/basic/commands.h

@@ -115,6 +115,7 @@ class CLCD {
     static void     mem_write_8    (uint32_t reg_address, uint8_t w_data);
     static void     mem_write_16   (uint32_t reg_address, uint16_t w_data);
     static void     mem_write_32   (uint32_t reg_address, uint32_t w_data);
+    static void     mem_write_fill (uint32_t reg_address, uint8_t w_data, uint16_t len);
     static void     mem_write_bulk (uint32_t reg_address, const void *data, uint16_t len, uint8_t padding = 0);
     static void     mem_write_pgm  (uint32_t reg_address, const void *data, uint16_t len, uint8_t padding = 0);
     static void     mem_write_bulk (uint32_t reg_address, progmem_str str, uint16_t len, uint8_t padding = 0);

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/ftdi_extended.h

@@ -34,6 +34,7 @@
   #include "unicode/unicode.h"
   #include "unicode/standard_char_set.h"
   #include "unicode/western_char_set.h"
+  #include "unicode/cyrillic_char_set.h"
   #include "unicode/font_bitmaps.h"
   #include "rgb_t.h"
   #include "bitmap_info.h"

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/text_ellipsis.cpp

@@ -37,11 +37,22 @@ namespace FTDI {
     // split and still allow the ellipsis to fit.
     int16_t lineWidth = 0;
     char *breakPoint   = str;
-    for (char* c = str; *c; c++) {
-      lineWidth += fm.get_char_width(*c);
-      if (lineWidth + ellipsisWidth < w)
-        breakPoint = c;
-    }
+    #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';

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/unicode/cyrillic_char_set.cpp

@@ -0,0 +1,139 @@
+/************************
+ * cyrillic_char_set.cpp *
+ ************************/
+
+/****************************************************************************
+ *   Written By Kirill Shashlov 2020                                        *
+ *              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 ALL(FTDI_EXTENDED, TOUCH_UI_USE_UTF8, TOUCH_UI_UTF8_CYRILLIC_CHARSET)
+
+  #include "cyrillic_char_set_bitmap_31.h"
+
+  #define NUM_ELEMENTS(a) (sizeof(a)/sizeof(a[0]))
+
+  #define UTF8(A) uint16_t(utf8(U##A))
+
+  using namespace FTDI;
+
+  constexpr static uint8_t cyrillic_font_handle = 6;
+
+  uint32_t FTDI::CyrillicCharSet::bitmap_addr;
+
+  /**
+   * Load bitmap data into RAMG. This function is called once at the start
+   * of the program.
+   *
+   * Parameters:
+   *
+   *   addr  - Address in RAMG where the font data is written
+   *
+   * Returns: Last wrote address
+   */
+
+  uint32_t FTDI::CyrillicCharSet::load_data(uint32_t addr) {
+    if (addr % 4 != 0)
+      addr += 4 - (addr % 4);
+
+    // Load the alternative font metrics
+    CLCD::FontMetrics cyrillic_fm;
+    cyrillic_fm.ptr    = addr + 148;
+    cyrillic_fm.format = L4;
+    cyrillic_fm.stride = 20;
+    cyrillic_fm.width  = 40;
+    cyrillic_fm.height = 49;
+    LOOP_L_N(i, 127)
+      cyrillic_fm.char_widths[i] = 0;
+
+    // For cyrillic characters, copy the character widths from the widths tables
+    LOOP_L_N(i, NUM_ELEMENTS(cyrillic_font_widths)) {
+      cyrillic_fm.char_widths[i] = cyrillic_font_widths[i];
+    }
+    CLCD::mem_write_bulk(addr, &cyrillic_fm,  148);
+
+    // Decode the RLE data and load it into RAMG as a bitmap
+    uint32_t lastaddr = write_rle_data(addr + 148, cyrillic_font, sizeof(cyrillic_font));
+
+    bitmap_addr = addr;
+
+    return lastaddr;
+  }
+
+  /**
+   * Populates the bitmap handles for the custom into the display list.
+   * This function is called once at the start of each display list.
+   *
+   * Parameters:
+   *
+   *   cmd  - Object used for writing to the FTDI chip command queue.
+   */
+
+  void FTDI::CyrillicCharSet::load_bitmaps(CommandProcessor& cmd) {
+    CLCD::FontMetrics cyrillic_fm;
+    cyrillic_fm.ptr    = bitmap_addr + 148;
+    cyrillic_fm.format = L4;
+    cyrillic_fm.stride = 20;
+    cyrillic_fm.width  = 40;
+    cyrillic_fm.height = 49;
+    set_font_bitmap(cmd, cyrillic_fm, cyrillic_font_handle);
+  }
+
+  /**
+   * Renders a character at location x and y. The x position is incremented
+   * by the width of the character.
+   *
+   * Parameters:
+   *
+   *   cmd  - If non-NULL the symbol is drawn to the screen.
+   *          If NULL, only increment position for text measurement.
+   *
+   *   x, y - The location at which to draw the character. On output,
+   *          incremented to the location of the next character.
+   *
+   *   fs   - A scaling object used to scale the font. The display will
+   *          already be configured to scale bitmaps, but positions
+   *          must be scaled using fs.scale()
+   *
+   *   c    - The unicode code point to draw. If the renderer does not
+   *          support the character, it should return false.
+   *
+   * Returns: Whether the character was supported.
+   */
+
+  bool FTDI::CyrillicCharSet::render_glyph(CommandProcessor* cmd, int &x, int &y, font_size_t fs, utf8_char_t c) {
+    // A supported character?
+    if ((c < UTF8('А') || c > UTF8('я')) && (c != UTF8('Ё')) && (c != UTF8('ё'))) return false;
+
+    uint8_t idx = (c == UTF8('Ё')) ? 64 :
+                  (c == UTF8('ё')) ? 65 :
+                  (c < UTF8('р'))  ? c - UTF8('А') :
+                                     c - UTF8('р') + 48
+                  ;
+
+    uint8_t width = cyrillic_font_widths[idx];
+
+    // Draw the character
+    if (cmd) ext_vertex2ii(*cmd, x, y, cyrillic_font_handle, idx);
+
+    // Increment X to the next character position
+    x += fs.scale(width);
+    return true;
+  }
+
+#endif // FTDI_EXTENDED && TOUCH_UI_USE_UTF8 && TOUCH_UI_UTF8_WESTERN_CHARSET

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/unicode/cyrillic_char_set.h

@@ -0,0 +1,32 @@
+/**********************
+ * cyrillic_char_set.h *
+ **********************/
+
+/****************************************************************************
+ *   Written By Kirill Shashlov 2020                                        *
+ *              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/>.                             *
+ ****************************************************************************/
+
+namespace FTDI {
+  class CyrillicCharSet {
+    private:
+      static uint32_t bitmap_addr;
+    public:
+      static uint32_t load_data(uint32_t addr);
+      static void load_bitmaps(CommandProcessor&);
+      static bool render_glyph(CommandProcessor*, int &x, int &y, font_size_t, utf8_char_t);
+  };
+}