/* * Copyright 2018 Avi Halachmi (:avih) avihpit@yahoo.com https://github.com/avih * MIT/X Consortium License */ /* * U+25XX codepoints data * * References: * http://www.unicode.org/charts/PDF/U2500.pdf * http://www.unicode.org/charts/PDF/U2580.pdf * * Test page: * https://github.com/GNOME/vte/blob/master/doc/boxes.txt */ /* Each shape is encoded as 16-bits. Higher bits are category, lower are data */ /* Categories (mutually exclusive except BDB): */ /* For convenience, BDL/BDA/BBS/BDB are 1 bit each, the rest are enums */ #define BDL (1<<8) /* Box Draw Lines (light/double/heavy) */ #define BDA (1<<9) /* Box Draw Arc (light) */ #define BBD (1<<10) /* Box Block Down (lower) X/8 */ #define BBL (2<<10) /* Box Block Left X/8 */ #define BBU (3<<10) /* Box Block Upper X/8 */ #define BBR (4<<10) /* Box Block Right X/8 */ #define BBQ (5<<10) /* Box Block Quadrants */ #define BRL (6<<10) /* Box Braille (data is lower byte of U28XX) */ #define BBS (1<<14) /* Box Block Shades */ #define BDB (1<<15) /* Box Draw is Bold */ /* (BDL/BDA) Light/Double/Heavy x Left/Up/Right/Down/Horizontal/Vertical */ /* Heavy is light+double (literally drawing light+double align to form heavy) */ #define LL (1<<0) #define LU (1<<1) #define LR (1<<2) #define LD (1<<3) #define LH (LL+LR) #define LV (LU+LD) #define DL (1<<4) #define DU (1<<5) #define DR (1<<6) #define DD (1<<7) #define DH (DL+DR) #define DV (DU+DD) #define HL (LL+DL) #define HU (LU+DU) #define HR (LR+DR) #define HD (LD+DD) #define HH (HL+HR) #define HV (HU+HD) /* (BBQ) Quadrants Top/Bottom x Left/Right */ #define TL (1<<0) #define TR (1<<1) #define BL (1<<2) #define BR (1<<3) /* Data for U+2500 - U+259F except dashes/diagonals */ static const unsigned short boxdata[256] = { /* light lines */ [0x00] = BDL + LH, /* light horizontal */ [0x02] = BDL + LV, /* light vertical */ [0x0c] = BDL + LD + LR, /* light down and right */ [0x10] = BDL + LD + LL, /* light down and left */ [0x14] = BDL + LU + LR, /* light up and right */ [0x18] = BDL + LU + LL, /* light up and left */ [0x1c] = BDL + LV + LR, /* light vertical and right */ [0x24] = BDL + LV + LL, /* light vertical and left */ [0x2c] = BDL + LH + LD, /* light horizontal and down */ [0x34] = BDL + LH + LU, /* light horizontal and up */ [0x3c] = BDL + LV + LH, /* light vertical and horizontal */ [0x74] = BDL + LL, /* light left */ [0x75] = BDL + LU, /* light up */ [0x76] = BDL + LR, /* light right */ [0x77] = BDL + LD, /* light down */ /* heavy [+light] lines */ [0x01] = BDL + HH, [0x03] = BDL + HV, [0x0d] = BDL + HR + LD, [0x0e] = BDL + HD + LR, [0x0f] = BDL + HD + HR, [0x11] = BDL + HL + LD, [0x12] = BDL + HD + LL, [0x13] = BDL + HD + HL, [0x15] = BDL + HR + LU, [0x16] = BDL + HU + LR, [0x17] = BDL + HU + HR, [0x19] = BDL + HL + LU, [0x1a] = BDL + HU + LL, [0x1b] = BDL + HU + HL, [0x1d] = BDL + HR + LV, [0x1e] = BDL + HU + LD + LR, [0x1f] = BDL + HD + LR + LU, [0x20] = BDL + HV + LR, [0x21] = BDL + HU + HR + LD, [0x22] = BDL + HD + HR + LU, [0x23] = BDL + HV + HR, [0x25] = BDL + HL + LV, [0x26] = BDL + HU + LD + LL, [0x27] = BDL + HD + LU + LL, [0x28] = BDL + HV + LL, [0x29] = BDL + HU + HL + LD, [0x2a] = BDL + HD + HL + LU, [0x2b] = BDL + HV + HL, [0x2d] = BDL + HL + LD + LR, [0x2e] = BDL + HR + LL + LD, [0x2f] = BDL + HH + LD, [0x30] = BDL + HD + LH, [0x31] = BDL + HD + HL + LR, [0x32] = BDL + HR + HD + LL, [0x33] = BDL + HH + HD, [0x35] = BDL + HL + LU + LR, [0x36] = BDL + HR + LU + LL, [0x37] = BDL + HH + LU, [0x38] = BDL + HU + LH, [0x39] = BDL + HU + HL + LR, [0x3a] = BDL + HU + HR + LL, [0x3b] = BDL + HH + HU, [0x3d] = BDL + HL + LV + LR, [0x3e] = BDL + HR + LV + LL, [0x3f] = BDL + HH + LV, [0x40] = BDL + HU + LH + LD, [0x41] = BDL + HD + LH + LU, [0x42] = BDL + HV + LH, [0x43] = BDL + HU + HL + LD + LR, [0x44] = BDL + HU + HR + LD + LL, [0x45] = BDL + HD + HL + LU + LR, [0x46] = BDL + HD + HR + LU + LL, [0x47] = BDL + HH + HU + LD, [0x48] = BDL + HH + HD + LU, [0x49] = BDL + HV + HL + LR, [0x4a] = BDL + HV + HR + LL, [0x4b] = BDL + HV + HH, [0x78] = BDL + HL, [0x79] = BDL + HU, [0x7a] = BDL + HR, [0x7b] = BDL + HD, [0x7c] = BDL + HR + LL, [0x7d] = BDL + HD + LU, [0x7e] = BDL + HL + LR, [0x7f] = BDL + HU + LD, /* double [+light] lines */ [0x50] = BDL + DH, [0x51] = BDL + DV, [0x52] = BDL + DR + LD, [0x53] = BDL + DD + LR, [0x54] = BDL + DR + DD, [0x55] = BDL + DL + LD, [0x56] = BDL + DD + LL, [0x57] = BDL + DL + DD, [0x58] = BDL + DR + LU, [0x59] = BDL + DU + LR, [0x5a] = BDL + DU + DR, [0x5b] = BDL + DL + LU, [0x5c] = BDL + DU + LL, [0x5d] = BDL + DL + DU, [0x5e] = BDL + DR + LV, [0x5f] = BDL + DV + LR, [0x60] = BDL + DV + DR, [0x61] = BDL + DL + LV, [0x62] = BDL + DV + LL, [0x63] = BDL + DV + DL, [0x64] = BDL + DH + LD, [0x65] = BDL + DD + LH, [0x66] = BDL + DD + DH, [0x67] = BDL + DH + LU, [0x68] = BDL + DU + LH, [0x69] = BDL + DH + DU, [0x6a] = BDL + DH + LV, [0x6b] = BDL + DV + LH, [0x6c] = BDL + DH + DV, /* (light) arcs */ [0x6d] = BDA + LD + LR, [0x6e] = BDA + LD + LL, [0x6f] = BDA + LU + LL, [0x70] = BDA + LU + LR, /* Lower (Down) X/8 block (data is 8 - X) */ [0x81] = BBD + 7, [0x82] = BBD + 6, [0x83] = BBD + 5, [0x84] = BBD + 4, [0x85] = BBD + 3, [0x86] = BBD + 2, [0x87] = BBD + 1, [0x88] = BBD + 0, /* Left X/8 block (data is X) */ [0x89] = BBL + 7, [0x8a] = BBL + 6, [0x8b] = BBL + 5, [0x8c] = BBL + 4, [0x8d] = BBL + 3, [0x8e] = BBL + 2, [0x8f] = BBL + 1, /* upper 1/2 (4/8), 1/8 block (X), right 1/2, 1/8 block (8-X) */ [0x80] = BBU + 4, [0x94] = BBU + 1, [0x90] = BBR + 4, [0x95] = BBR + 7, /* Quadrants */ [0x96] = BBQ + BL, [0x97] = BBQ + BR, [0x98] = BBQ + TL, [0x99] = BBQ + TL + BL + BR, [0x9a] = BBQ + TL + BR, [0x9b] = BBQ + TL + TR + BL, [0x9c] = BBQ + TL + TR + BR, [0x9d] = BBQ + TR, [0x9e] = BBQ + BL + TR, [0x9f] = BBQ + BL + TR + BR, /* Shades, data is an alpha value in 25% units (1/4, 1/2, 3/4) */ [0x91] = BBS + 1, [0x92] = BBS + 2, [0x93] = BBS + 3, /* U+2504 - U+250B, U+254C - U+254F: unsupported (dashes) */ /* U+2571 - U+2573: unsupported (diagonals) */ };