src/displayapp/fonts/neofont.c

1 files changed, 464 insertions, 0 deletions

diff --git a/src/displayapp/fonts/neofont.c b/src/displayapp/fonts/neofont.c
new file mode 100644
index 0000000..25fa3de
--- /dev/null
+++ b/src/displayapp/fonts/neofont.c
@@ -0,0 +1,464 @@
+#ifdef LV_LVGL_H_INCLUDE_SIMPLE
+#include "lvgl.h"
+#else
+#include "lvgl/lvgl.h"
+#endif
+
+
+#include <stdint.h>
+// #include <stdio.h>
+// #include <string.h>
+
+#define G(  \
+    a,b,c,  \
+    d,e,f,  \
+    g,h,i,  \
+    j,k,l,  \
+    m,n,o   \
+) \
+{ \
+  h + (g<<1) + (f<<2) + (e<<3) + (d << 4) + (c << 5) + (b << 6) + (a << 7),  \
+  0 + (o<<1) + (n<<2) + (m<<3) + (l << 4) + (k << 5) + (j << 6) + (i << 7)   \
+}
+
+#define X 1
+#define _ 0
+
+static const uint8_t glyphs[][2] = {
+  G(  _, X, _,
+      X, _, X,
+      X, _, X,
+      X, _, X,
+      _, X, _   ),
+
+  G(  _, X, _,
+      X, X, _,
+      _, X, _,
+      _, X, _,
+      X, X, X   ),
+
+  G(  X, X, _,
+      _, _, X,
+      _, _, X,
+      _, X, _,
+      X, X, X   ),
+
+  G(  X, X, _,
+      _, _, X,
+      _, X, _,
+      _, _, X,
+      X, X, _   ),
+
+  G(  _, _, X,
+      _, X, X,
+      X, _, X,
+      X, X, X,
+      _, _, X   ),
+
+  G(  X, X, X,
+      X, _, _,
+      X, X, _,
+      _, _, X,
+      X, X, _   ),
+
+  G(  _, X, X,
+      X, _, _,
+      X, X, _,
+      X, _, X,
+      _, X, _   ),
+
+  G(  X, X, X,
+      _, _, X,
+      _, _, X,
+      _, X, _,
+      _, X, _   ),
+
+  G(  _, X, _,
+      X, _, X,
+      _, X, _,
+      X, _, X,
+      _, X, _   ),
+
+  G(  _, X, _,
+      X, _, X,
+      _, X, X,
+      _, _, X,
+      X, X, _   ),
+
+  G(  _, X, _,
+      X, _, X,
+      X, _, X,
+      X, X, X,
+      X, _, X   ),
+
+  G(  X, X, _,
+      X, _, X,
+      X, X, _,
+      X, _, X,
+      X, X, _   ),
+
+  G(  _, X, X,
+      X, _, _,
+      X, _, _,
+      X, _, _,
+      _, X, X   ),
+
+  G(  X, X, _,
+      X, _, X,
+      X, _, X,
+      X, _, X,
+      X, X, _   ),
+
+  G(  X, X, X,
+      X, _, _,
+      X, X, _,
+      X, _, _,
+      X, X, X   ),
+
+  G(  X, X, X,
+      X, _, _,
+      X, X, _,
+      X, _, _,
+      X, _, _   ),
+
+  G(  _, X, X,
+      X, _, _,
+      X, _, _,
+      X, _, X,
+      _, X, X   ),
+
+  G(  X, _, X,
+      X, _, X,
+      X, X, X,
+      X, _, X,
+      X, _, X   ),
+
+  G(  X, X, X,
+      _, X, _,
+      _, X, _,
+      _, X, _,
+      X, X, X   ),
+
+  G(  X, X, X,
+      _, _, X,
+      _, _, X,
+      X, _, X,
+      _, X, _   ),
+
+  G(  X, _, X,
+      X, _, X,
+      X, X, _,
+      X, _, X,
+      X, _, X   ),
+
+  G(  X, _, _,
+      X, _, _,
+      X, _, _,
+      X, _, _,
+      X, X, X   ),
+
+  G(  X, _, X,
+      X, X, X,
+      X, _, X,
+      X, _, X,
+      X, _, X   ),
+
+  G(  X, X, _,
+      X, _, X,
+      X, _, X,
+      X, _, X,
+      X, _, X   ),
+
+  G(  X, X, X,
+      X, _, X,
+      X, _, X,
+      X, _, X,
+      X, X, X   ),
+
+  G(  X, X, X,
+      X, _, X,
+      X, X, X,
+      X, _, _,
+      X, _, _   ),
+
+  G(  _, X, _,
+      X, _, X,
+      X, _, X,
+      X, _, X,
+      _, X, X   ),
+
+  G(  X, X, _,
+      X, _, X,
+      X, X, _,
+      X, _, X,
+      X, _, X   ),
+
+  G(  _, X, X,
+      X, _, _,
+      _, X, _,
+      _, _, X,
+      X, X, _   ),
+
+  G(  X, X, X,
+      _, X, _,
+      _, X, _,
+      _, X, _,
+      _, X, _   ),
+
+  G(  X, _, X,
+      X, _, X,
+      X, _, X,
+      X, _, X,
+      X, X, X   ),
+
+  G(  X, _, X,
+      X, _, X,
+      X, _, X,
+      _, X, _,
+      _, X, _   ),
+
+  G(  X, _, X,
+      X, _, X,
+      X, _, X,
+      X, X, X,
+      X, _, X   ),
+
+  G(  X, _, X,
+      X, _, X,
+      _, X, _,
+      X, _, X,
+      X, _, X   ),
+
+  G(  X, _, X,
+      X, _, X,
+      _, X, _,
+      _, X, _,
+      _, X, _   ),
+
+  G(  X, X, X,
+      _, _, X,
+      _, X, _,
+      X, _, _,
+      X, X, X   ),
+
+
+  G(  _, _, _,
+      _, _, _,
+      X, X, X,
+      _, _, _,
+      _, _, _   ),
+
+
+  G(  _, _, _,
+      _, _, X,
+      _, X, _,
+      X, _, _,
+      _, _, _   ),
+
+  G(  _, _, _,
+      _, X, _,
+      _, _, _,
+      _, X, _,
+      _, _, _   ),
+
+  G(  _, _, _,
+      _, _, _,
+      _, _, _,
+      _, X, _,
+      _, _, _   ),
+
+  G(  _, _, _,
+      _, _, _,
+      _, _, _,
+      _, X, _,
+      X, _, _   ),
+
+  G(  _, _, _,
+      _, _, _,
+      _, _, _,
+      _, _, _,
+      X, X, X   ),
+
+  G(  X, X, _,
+      _, _, X,
+      _, X, _,
+      _, _, _,
+      _, X, _   ),
+
+  G(  _, X, _,
+      _, X, _,
+      _, X, _,
+      _, _, _,
+      _, X, _   ),
+
+  G(  X, _, _,
+      _, _, X,
+      _, X, _,
+      X, _, _,
+      _, _, X   ),
+
+  G(  _, _, _,
+      _, X, _,
+      X, X, X,
+      _, X, _,
+      _, _, _   ),
+
+  G(  _, X, _,
+      X, X, X,
+      _, X, _,
+      X, X, X,
+      _, X, _   ),
+
+  G(  _, X, _,
+      X, _, X,
+      _, X, _,
+      _, _, _,
+      _, _, _   ),
+
+};
+
+#undef X
+#undef _
+#undef G
+
+// This could be inline to save a few bytes...
+/* Get the bitmap of `unicode_letter` from `font`. */
+static const uint8_t * neofont0_glyph_bitmap_cb(const lv_font_t * font, uint32_t unicode_letter)
+{
+    static const uint8_t spc[] = { 0, 0 };
+    static uint8_t custom[2];
+    /* Your code here */
+
+    // /* The bitmap should be a continuous bitstream where
+    //  * each pixel is represented by `bpp` bits */
+    if ('0' <= unicode_letter && unicode_letter <= '9') {        
+      return glyphs[(unicode_letter - '0')];
+    }
+    if ('A' <= unicode_letter && unicode_letter <= 'Z') {        
+      return glyphs[(unicode_letter - 'A')+10];
+    }
+    if ('a' <= unicode_letter && unicode_letter <= 'z') {        
+      return glyphs[(unicode_letter - 'a')+10];
+    }
+
+    if (unicode_letter == ' ') { return spc; }
+    static const char *symbols = "-/:.,_?!%+#";
+    if (unicode_letter < 0x80) {
+      char*x = strchr(symbols,((uint8_t)unicode_letter));
+      if (x != NULL) {
+        return glyphs[36+(x-symbols)];
+      }
+    }
+
+    if ((0xF0000 < unicode_letter) && (unicode_letter < 0xF7FFF)) {
+      custom[0] = unicode_letter;
+      custom[1] = (unicode_letter >> 7);
+      return custom;
+    } 
+
+    switch (unicode_letter) {
+      case 0xB0: 
+        return glyphs[sizeof(glyphs)/sizeof(glyphs[0])-1];
+    }
+
+    return glyphs[sizeof(glyphs)/sizeof(glyphs[0])-2];
+}
+
+static bool neofont15_glyph_dsc_cb(const lv_font_t * font, lv_font_glyph_dsc_t * dsc_out, uint32_t unicode_letter, uint32_t unicode_letter_next)
+{
+
+    dsc_out->adv_w = 12;        /*Horizontal space required by the glyph in [px]*/
+    dsc_out->box_h = 15;         /*Height of the bitmap in [px]*/
+    dsc_out->box_w = 9;         /*Width of the bitmap in [px]*/
+    dsc_out->ofs_x = 1;         /*X offset of the bitmap in [pf]*/
+    dsc_out->ofs_y = 0;         /*Y offset of the bitmap measured from the as line*/
+    dsc_out->bpp   = 1;         /*Bits per pixel: 1/2/4/8*/
+
+    return true;                /*true: glyph found; false: glyph was not found*/
+}
+
+/* Get the bitmap of `unicode_letter` from `font`. */
+static const uint8_t * neofont15_glyph_bitmap_cb(const lv_font_t * font, uint32_t unicode_letter)
+{
+    const uint8_t *u = neofont0_glyph_bitmap_cb(font, unicode_letter);
+    static uint8_t v[17];
+    uint8_t u0 = u[0];
+    uint8_t u1 = u[1];
+
+    uint8_t a,b,c, d,e,f, g,h,i, j,k,l, m,n,o;
+    a = (u0>>7)&1; u0 <<= 1;
+    b = (u0>>7)&1; u0 <<= 1;
+    c = (u0>>7)&1; u0 <<= 1;
+    d = (u0>>7)&1; u0 <<= 1;
+    e = (u0>>7)&1; u0 <<= 1;
+    f = (u0>>7)&1; u0 <<= 1;
+    g = (u0>>7)&1; u0 <<= 1;
+    h = (u0>>7)&1;
+    i = (u1>>7)&1; u1 <<= 1;
+    j = (u1>>7)&1; u1 <<= 1;
+    k = (u1>>7)&1; u1 <<= 1;
+    l = (u1>>7)&1; u1 <<= 1;
+    m = (u1>>7)&1; u1 <<= 1;
+    n = (u1>>7)&1; u1 <<= 1;
+    o = (u1>>7)&1;
+
+#define P(a,b,c,d, e,f,g,h) ((a<<7)|(b<<6)|(c<<5)|(d<<4)|(e<<3)|(f<<2)|(g<<1)|h)
+
+    v[0] = P(a,a,a,b,b,b,c,c);
+                    v[1] = P(c,
+             a,a,a,b,b,b,c);
+                  v[2] = P(c,c,
+             a,a,a,b,b,b);
+                v[3] = P(c,c,c,
+
+             d,d,d,e,e);
+              v[4] = P(e,f,f,f,
+             d,d,d,e);
+            v[5] = P(e,e,f,f,f,
+             d,d,d);
+          v[6] = P(e,e,e,f,f,f,
+
+            g,g);
+       v[7] = P(g,h,h,h,i,i,i,
+            g);
+     v[8] = P(g,g,h,h,h,i,i,i);
+   v[9] = P(g,g,g,h,h,h,i,i);
+                  v[10] = P(i,
+  
+           j,j,j,k,k,k,l);
+               v[11] = P(l,l,
+           j,j,j,k,k,k);
+             v[12] = P(l,l,l,
+           j,j,j,k,k);
+           v[13] = P(k,l,l,l,
+
+           m,m,m,n);
+         v[14] = P(n,n,o,o,o,
+           m,m,m);
+       v[15] = P(n,n,n,o,o,o,
+           m,m);
+     v[16] = P(m,n,n,n,o,o,o,0);    
+
+#undef P
+
+    return v;    /*Or NULL if not found*/
+}
+
+/*Describe the properties of a font*/
+lv_font_t neofont15 = {
+  .get_glyph_dsc = neofont15_glyph_dsc_cb,        /*Set a callback to get info about gylphs*/
+  .get_glyph_bitmap = neofont15_glyph_bitmap_cb,  /*Set a callback to get bitmap of a glyp*/
+  .line_height = 18,                   /*The real line height where any text fits*/
+  .base_line = 2,
+  .dsc = 0,                           /*Store any implementation specific data here*/
+#if !(LVGL_VERSION_MAJOR == 6 && LVGL_VERSION_MINOR == 0)
+    .subpx = LV_FONT_SUBPX_NONE,
+#endif
+#if LV_VERSION_CHECK(7, 4, 0) || LVGL_VERSION_MAJOR >= 8
+    .underline_position = 0,
+    .underline_thickness = 0,
+#endif
+  .user_data = 0                      /*Optionally some extra user data*/
+};
+
+