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-- Displays Greek letters and mathematically interesting Unicode ranges.
-- Copyright (C) 2008 Jerry Bauck
-- This file is part of PLplot.
-- PLplot is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Library General Public License as published
-- by the Free Software Foundation; either version 2 of the License, or
-- (at your option) any later version.
-- PLplot 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 Library General Public License for more details.
-- You should have received a copy of the GNU Library General Public License
-- along with PLplot; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
with
Ada.Text_IO,
Ada.Integer_Text_IO,
Ada.Strings.Unbounded,
Ada.Characters.Handling,
Ada.Strings,
Ada.Strings.Fixed,
Ada.Numerics,
Ada.Numerics.Long_Elementary_Functions,
PLplot_Auxiliary,
PLplot_Traditional;
use
Ada.Text_IO,
Ada.Integer_Text_IO,
Ada.Strings.Unbounded,
Ada.Strings,
Ada.Strings.Fixed,
Ada.Numerics,
Ada.Numerics.Long_Elementary_Functions,
PLplot_Auxiliary,
PLplot_Traditional;
procedure x23a is
Greek : array(0 .. 47) of String(1 .. 3) := (
"#gA","#gB","#gG","#gD","#gE","#gZ","#gY","#gH","#gI","#gK","#gL","#gM",
"#gN","#gC","#gO","#gP","#gR","#gS","#gT","#gU","#gF","#gX","#gQ","#gW",
"#ga","#gb","#gg","#gd","#ge","#gz","#gy","#gh","#gi","#gk","#gl","#gm",
"#gn","#gc","#go","#gp","#gr","#gs","#gt","#gu","#gf","#gx","#gq","#gw");
Type1 : array (0 .. 165) of Integer := (
16#0020#,16#0021#,16#0023#,16#0025#,16#0026#,
16#0028#,16#0029#,16#002b#,16#002c#,16#002e#,
16#002f#,16#0030#,16#0031#,16#0032#,16#0033#,
16#0034#,16#0035#,16#0036#,16#0037#,16#0038#,
16#0039#,16#003a#,16#003b#,16#003c#,16#003d#,
16#003e#,16#003f#,16#005b#,16#005d#,16#005f#,
16#007b#,16#007c#,16#007d#,16#00a9#,16#00ac#,
16#00ae#,16#00b0#,16#00b1#,16#00d7#,16#00f7#,
16#0192#,16#0391#,16#0392#,16#0393#,16#0394#,
16#0395#,16#0396#,16#0397#,16#0398#,16#0399#,
16#039a#,16#039b#,16#039c#,16#039d#,16#039e#,
16#039f#,16#03a0#,16#03a1#,16#03a3#,16#03a4#,
16#03a5#,16#03a6#,16#03a7#,16#03a8#,16#03a9#,
16#03b1#,16#03b2#,16#03b3#,16#03b4#,16#03b5#,
16#03b6#,16#03b7#,16#03b8#,16#03b9#,16#03ba#,
16#03bb#,16#03bc#,16#03bd#,16#03be#,16#03bf#,
16#03c0#,16#03c1#,16#03c2#,16#03c3#,16#03c4#,
16#03c5#,16#03c6#,16#03c7#,16#03c8#,16#03c9#,
16#03d1#,16#03d2#,16#03d5#,16#03d6#,16#2022#,
16#2026#,16#2032#,16#2033#,16#203e#,16#2044#,
16#2111#,16#2118#,16#211c#,16#2122#,16#2126#,
16#2135#,16#2190#,16#2191#,16#2192#,16#2193#,
16#2194#,16#21b5#,16#21d0#,16#21d1#,16#21d2#,
16#21d3#,16#21d4#,16#2200#,16#2202#,16#2203#,
16#2205#,16#2206#,16#2207#,16#2208#,16#2209#,
16#220b#,16#220f#,16#2211#,16#2212#,16#2215#,
16#2217#,16#221a#,16#221d#,16#221e#,16#2220#,
16#2227#,16#2228#,16#2229#,16#222a#,16#222b#,
16#2234#,16#223c#,16#2245#,16#2248#,16#2260#,
16#2261#,16#2264#,16#2265#,16#2282#,16#2283#,
16#2284#,16#2286#,16#2287#,16#2295#,16#2297#,
16#22a5#,16#22c5#,16#2320#,16#2321#,16#2329#,
16#232a#,16#25ca#,16#2660#,16#2663#,16#2665#,
16#2666#);
function title(which : Integer) return String is
begin
if which = 0 then return "#<0x10>PLplot Example 23 - Greek Letters"; end if;
if which = 1 then return "#<0x10>PLplot Example 23 - Type 1 Symbol Font Glyphs by Unicode (a)"; end if;
if which = 2 then return "#<0x10>PLplot Example 23 - Type 1 Symbol Font Glyphs by Unicode (b)"; end if;
if which = 3 then return "#<0x10>PLplot Example 23 - Type 1 Symbol Font Glyphs by Unicode (c)"; end if;
if which = 4 then return "#<0x10>PLplot Example 23 - Number Forms Unicode Block"; end if;
if which = 5 then return "#<0x10>PLplot Example 23 - Arrows Unicode Block (a)"; end if;
if which = 6 then return "#<0x10>PLplot Example 23 - Arrows Unicode Block (b)"; end if;
if which = 7 then return "#<0x10>PLplot Example 23 - Mathematical Operators Unicode Block (a)"; end if;
if which = 8 then return "#<0x10>PLplot Example 23 - Mathematical Operators Unicode Block (b)"; end if;
if which = 9 then return "#<0x10>PLplot Example 23 - Mathematical Operators Unicode Block (c)"; end if;
if which = 10 then return "#<0x10>PLplot Example 23 - Mathematical Operators Unicode Block (d)"; end if;
return "oops";
end title;
lo : array (0 .. 10) of Integer := (
16#0#,
16#0#,
16#40#,
16#80#,
16#2153#,
16#2190#,
16#21d0#,
16#2200#,
16#2240#,
16#2280#,
16#22c0#
);
hi : array (0 .. 10) of Integer := (
16#30#,
16#40#,
16#80#,
16#A6#,
16#2184#,
16#21d0#,
16#2200#,
16#2240#,
16#2280#,
16#22c0#,
16#2300#
);
nxcells : array (0 .. 10) of Integer := (
12,
8,
8,
8,
8,
8,
8,
8,
8,
8,
8
);
nycells : array (0 .. 10) of Integer := (
8,
8,
8,
8,
8,
8,
8,
8,
8,
8,
8
);
-- non-zero values must be consistent with nxcells and nycells.
offset : array (0 .. 10) of Integer := (
0,
0,
64,
128,
0,
0,
0,
0,
0,
0,
0
);
-- 30 possible FCI values.
FCI_COMBINATIONS : constant integer := 30;
fci : array (0 .. 29) of Unicode := (
16#80000000#,
16#80000001#,
16#80000002#,
16#80000003#,
16#80000004#,
16#80000010#,
16#80000011#,
16#80000012#,
16#80000013#,
16#80000014#,
16#80000020#,
16#80000021#,
16#80000022#,
16#80000023#,
16#80000024#,
16#80000100#,
16#80000101#,
16#80000102#,
16#80000103#,
16#80000104#,
16#80000110#,
16#80000111#,
16#80000112#,
16#80000113#,
16#80000114#,
16#80000120#,
16#80000121#,
16#80000122#,
16#80000123#,
16#80000124#
);
function family(which : Integer) return String is
begin
if which = 0 then return "sans-serif"; end if;
if which = 1 then return "serif"; end if;
if which = 2 then return "monospace"; end if;
if which = 3 then return "script"; end if;
if which = 4 then return "symbol"; end if;
return "oops";
end family;
function style(which : Integer) return String is
begin
if which = 0 then return "upright"; end if;
if which = 1 then return "italic"; end if;
if which = 2 then return "oblique"; end if;
return "oops";
end style;
function weight(which : Integer) return String is
begin
if which = 0 then return "medium"; end if;
if which = 1 then return "bold"; end if;
return "oops";
end weight;
xmin, xmax, ymin, ymax, ycharacter_scale, yoffset : Long_Float;
chardef, charht, deltax, deltay, x, y : Long_Float;
length, slice : Integer;
cmdString : Unbounded_String;
fci_old : Unicode;
ifamily, istyle, iweight : Integer;
dy : Long_Float := 0.030;
family_index, style_index, weight_index : Integer;
-- Must be big enough to contain the prefix strings, the font-changing
-- commands, and the "The quick brown..." string.
a_string : Unbounded_String;
package Unicode_IO is new Ada.Text_IO.Modular_IO(Unicode); -- fix this probably not used
use Unicode_IO;
-- Make a four-character hexadecimal string image of integers.
-- Useful for font manipulations.
-- To_Lower is used to make C-like output for A..F
-- so that the PostScript files generated by C and Ada are identical.
-- Integer values greater than 65535 (2^16-1) are treated modulo 2^16.
-- Based on Stephen Leake's SAL.Generic_Hex_Image.
-- Original: Copyright (C) 2005 Stephen Leake. All Rights Reserved, and
-- offered under GNU General Public License version 2 or later.
function Hex_Image_4 (Item : in Integer) return String is
Temp : Integer := Item;
Nibble : Integer;
Image : String (1 .. 4);
begin
for I in reverse Image'Range loop
Nibble := Temp mod 16;
Temp := Temp / 16;
if Nibble > 9 then
Image (I) := Character'Val (Character'Pos ('A') + Nibble - 10);
else
Image (I) := Character'Val (Character'Pos ('0') + Nibble);
end if;
end loop;
Image := Ada.Characters.Handling.To_Lower(Image);
return Image;
end Hex_Image_4;
-- Make a eight-character hexadecimal string image of Unicode.
function Hex_Image_8 (Item : in Unicode) return String is
-- Long_Long_Integer so don't overflow Integer
Temp : Long_Long_Integer := Long_Long_Integer(Item);
Nibble : Long_Long_Integer;
Image : String (1 .. 8);
begin
for I in reverse Image'Range loop
Nibble := Temp mod 16;
Temp := Temp / 16;
if Nibble > 9 then
Image (I) := Character'Val(Character'Pos ('A') + Nibble - 10);
else
Image (I) := Character'Val(Character'Pos ('0') + Nibble);
end if;
end loop;
Image := Ada.Characters.Handling.To_Lower(Image);
return Image;
end Hex_Image_8;
begin
plparseopts(PL_PARSE_FULL);
plinit;
for page in 0 .. 10 loop
pladv(0);
-- Set up viewport and window
plvpor(0.02, 0.98, 0.02, 0.90);
plwind(0.0, 1.0, 0.0, 1.0);
plgspa(xmin, xmax, ymin, ymax);
plschr(0.0, 0.8);
ycharacter_scale := (1.0 - 0.0) / (ymax - ymin);
-- Factor should be 0.5, but heuristically it turns out to be larger.
plgchr(chardef, charht);
yoffset := 1.0 * charht * ycharacter_scale;
-- Draw the grid using plbox
plcol0(2);
deltax := 1.0 / Long_Float(nxcells(page));
deltay := 1.0 / Long_Float(nycells(page));
plbox("bcg", deltax, 0, "bcg", deltay, 0);
plcol0(15);
length := hi(page) - lo(page);
slice := 0;
for j in reverse -1 .. nycells(page) - 1 loop
y := (0.5 + Long_Float(j)) * deltay;
for i in 0 .. nxcells(page) - 1 loop
x := (0.5 + Long_Float(i)) * deltax;
if slice < length then
if page = 0 then
cmdString := To_Unbounded_String(Greek(slice));
elsif page >= 1 and page <= 3 then
cmdString := To_Unbounded_String("#[0x" & Hex_Image_4(Type1(offset(page)+slice)) & "]");
elsif page >= 4 then
cmdString := To_Unbounded_String("#[0x" & Hex_Image_4(lo(page)+slice) & "]");
end if;
plptex(x, y + yoffset, 1.0, 0.0, 0.5, To_String(cmdString));
plptex(x, y - yoffset, 1.0, 0.0, 0.5, "#" & To_String(cmdString));
end if;
slice := slice + 1;
end loop; -- i
end loop; -- j
plschr(0.0, 1.0);
-- Page title
plmtex("t", 1.5, 0.5, 0.5, title(page));
end loop; --page
-- Demonstrate methods of getting the current fonts
plgfci(fci_old);
plgfont(ifamily, istyle, iweight);
Put("For example 23 prior to page 12 the FCI is ");
-- The following hack in outputting the hexadecimal value of fci_old in "C"
-- style, e.g. 0x00000000 instead of "Ada" style 16#00000000#, is done in
-- order to create the same textual output as the C example x23c.
-- Put(fci_old, Base => 16, Width => 0); -- Outputs "Ada" style.
Put("0x" & Hex_Image_8(fci_old)); -- Outputs "C" style.
New_Line;
Put("For example 23 prior to page 12 the font family, style and weight are "
& family(ifamily) & " " & style(istyle) & " " & weight(iweight));
New_Line;
for page in 11 .. 15 loop
pladv(0);
plvpor(0.02, 0.98, 0.02, 0.90);
plwind(0.0, 1.0, 0.0, 1.0);
plsfci(0);
if page = 11 then
plmtex("t", 1.5, 0.5, 0.5,
"#<0x10>PLplot Example 23 - " &
"Set Font with plsfci");
elsif page = 12 then
plmtex("t", 1.5, 0.5, 0.5,
"#<0x10>PLplot Example 23 - " &
"Set Font with plsfont");
elsif page = 13 then
plmtex("t", 1.5, 0.5, 0.5,
"#<0x10>PLplot Example 23 - " &
"Set Font with ##<0x8nnnnnnn> construct");
elsif page = 14 then
plmtex("t", 1.5, 0.5, 0.5,
"#<0x10>PLplot Example 23 - " &
"Set Font with ##<0xmn> constructs");
elsif page = 15 then
plmtex("t", 1.5, 0.5, 0.5,
"#<0x10>PLplot Example 23 - " &
"Set Font with ##<FCI COMMAND STRING/> constructs");
end if;
plschr(0.0, 0.75);
for i in 0 .. FCI_COMBINATIONS - 1 loop
family_index := i mod 5;
style_index := (i / 5) mod 3;
weight_index := ((i / 5) / 3) mod 2;
if page = 11 then
plsfci(fci(i));
a_string := To_Unbounded_String(
"Page 12, " &
family(family_index) & ", " &
style (style_index) & ", " &
weight(weight_index) & ": " &
"The quick brown fox jumps over the lazy dog");
elsif page = 12 then
plsfont(family_index, style_index, weight_index);
a_string := To_Unbounded_String(
"Page 13, " &
family(family_index) & ", " &
style (style_index) & ", " &
weight(weight_index) & ": " &
"The quick brown fox jumps over the lazy dog");
elsif page = 13 then
a_string := To_Unbounded_String(
"Page 14, " &
family(family_index) & ", " &
style (style_index) & ", " &
weight(weight_index) & ": " &
"#<0x" & Hex_Image_8(fci(i)) & ">" &
"The quick brown fox jumps over the lazy dog");
elsif page = 14 then
a_string := To_Unbounded_String(
"Page 15, " &
family(family_index) & ", " &
style (style_index) & ", " &
weight(weight_index) & ": " &
"#<0x" & Trim(Integer'Image(family_index), Left) &
"0>#<0x" & Trim(Integer'Image(style_index), Left) &
"1>#<0x" & Trim(Integer'Image(weight_index), Left) & "2>" &
"The quick brown fox jumps over the lazy dog");
elsif page = 15 then
a_string := To_Unbounded_String(
"Page 16, " &
family(family_index) & ", " &
style (style_index) & ", " &
weight(weight_index) & ": " &
"#<" & family(family_index) & "/>#<" & style (style_index) &
"/>#<" & weight(weight_index) & "/>" &
"The quick brown fox jumps over the lazy dog");
end if;
plptex (0.0, 1.0 - (Long_Float(i) + 0.5) * dy, 1.0, 0.0, 0.0, To_String(a_string));
end loop; -- i
plschr(0.0, 1.0);
end loop; -- page
-- Restore defaults
plcol0(1);
plend;
end x23a;
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