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|
(* Orpie -- a fullscreen RPN calculator for the console
* Copyright (C) 2003-2004, 2005, 2006-2007 Paul Pelzl
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2,
* as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Please send bug reports, patches, etc. to Paul Pelzl at
* <pelzlpj@eecs.umich.edu>.
*)
(* interface_draw.ml
* This file has all code concerned with rendering the stack, help panel,
* and data entry line. *)
open Curses;;
open Printf;;
open Rpc_calc;;
open Rpc_stack;;
open Complex;;
open Big_int;;
open Operations;;
open Interface;;
type abbrev_help_display_t = {functions : string list;
modes : string list;
misc : string list}
(* display the stack, where the bottom line of the display
* corresponds to stack level 'stack_bottom_row' *)
let draw_stack (iface : interface_state_t) =
let print_numbered_line l_num =
let num_len =
String.length (string_of_int (pred (iface.stack_bottom_row +
iface.scr.sw_lines)))
in
if num_len <= 2 then
(sprintf "%2d: %s" l_num)
else if num_len = 3 then
(sprintf "%3d: %s" l_num)
else if num_len = 4 then
(sprintf "%4d: %s" l_num)
else
(* if the line number is really huge, truncate to least
* significant digits *)
let l_num_str = string_of_int l_num in
let str_len = String.length l_num_str in
let trunc_num = Str.string_after l_num_str (str_len - 4) in
(sprintf "%s: %s" trunc_num)
in
(* if there is no help window, then print the calculator mode
* information above the stack *)
let num_stack_lines =
begin match iface.scr.help_win with
|Some win ->
iface.scr.sw_lines
|None ->
let modes = iface.calc#get_modes () in
assert (wmove iface.scr.stack_win 0 0);
wclrtoeol iface.scr.stack_win;
wattron iface.scr.stack_win WA.bold;
assert (mvwaddstr iface.scr.stack_win 0 2 "angle: base: complex:");
wattroff iface.scr.stack_win WA.bold;
let angle_str = match modes.angle with
|Rad -> "RAD"
|Deg -> "DEG" in
assert (mvwaddstr iface.scr.stack_win 0 9 angle_str);
let base_str = match modes.base with
|Bin -> "BIN"
|Oct -> "OCT"
|Hex -> "HEX"
|Dec -> "DEC" in
assert (mvwaddstr iface.scr.stack_win 0 20 base_str);
let complex_str = match modes.complex with
|Rect -> "REC"
|Polar -> "POL" in
assert (mvwaddstr iface.scr.stack_win 0 34 complex_str);
assert (mvwaddstr iface.scr.stack_win 1 0 (String.make (iface.scr.sw_cols) '-'));
iface.scr.sw_lines - 2
end
in
(* display the stack data itself *)
for line = iface.stack_bottom_row to
pred (iface.stack_bottom_row + num_stack_lines) do
let s = iface.calc#get_display_line line in
let len = String.length s in
assert (wmove iface.scr.stack_win
(iface.scr.sw_lines + iface.stack_bottom_row - 1 - line) 0);
wclrtoeol iface.scr.stack_win;
if line = iface.stack_selection &&
iface.interface_mode = BrowsingMode then
wattron iface.scr.stack_win WA.reverse
else
();
if len > iface.scr.sw_cols - 7 then begin
(* need to truncate the string *)
let line_string =
if line = iface.stack_selection &&
iface.interface_mode = BrowsingMode then
let sub_s =
if iface.horiz_scroll < len - iface.scr.sw_cols + 7 then
String.sub s iface.horiz_scroll (iface.scr.sw_cols - 7)
else
String.sub s (len - iface.scr.sw_cols + 7)
(iface.scr.sw_cols - 7)
in
print_numbered_line line sub_s
else
let sub_s = String.sub s 0 (iface.scr.sw_cols - 10) in
print_numbered_line line (sub_s ^ "...")
in
assert (waddstr iface.scr.stack_win line_string)
end else begin
let spacer = String.make (iface.scr.sw_cols - 7 - len) ' ' in
let line_string = print_numbered_line line (spacer ^ s) in
assert (waddstr iface.scr.stack_win line_string)
end;
if line = iface.stack_selection &&
iface.interface_mode = BrowsingMode then
wattroff iface.scr.stack_win WA.reverse
else
();
done;
assert (wnoutrefresh iface.scr.stack_win);
assert (wmove iface.scr.entry_win (iface.scr.ew_lines - 1) (iface.scr.ew_cols - 1))
let draw_update_stack iface =
draw_stack iface;
assert (doupdate ())
(* display the data that the user is in the process of entering *)
let draw_entry (iface : interface_state_t) =
assert (mvwaddstr iface.scr.entry_win 0 0 (String.make iface.scr.ew_cols '-'));
assert (wmove iface.scr.entry_win 1 0);
wclrtoeol iface.scr.entry_win;
(* Safely draw a string into the entry window, with "..." when
* truncation occurs. Highlight the first 'highlight_len'
* characters. *)
let draw_entry_string str highlight_len =
let len_str = String.length str in
begin
if len_str > iface.scr.ew_cols - 1 then
let trunc_str = String.sub str (len_str - iface.scr.ew_cols + 4)
(iface.scr.ew_cols - 4) in
assert (mvwaddstr iface.scr.entry_win 1 0 ("..." ^ trunc_str))
else
if highlight_len <= len_str then
begin
(* highlight the first 'highlight_len' characters *)
wattron iface.scr.entry_win WA.bold;
assert (mvwaddstr iface.scr.entry_win 1 (iface.scr.ew_cols - len_str - 1)
(Str.string_before str (highlight_len)));
wattroff iface.scr.entry_win WA.bold;
assert (mvwaddstr iface.scr.entry_win 1 (iface.scr.ew_cols - len_str -
1 + highlight_len) (Str.string_after str (highlight_len)))
end
else
assert (mvwaddstr iface.scr.entry_win 1 (iface.scr.ew_cols - len_str - 1) str)
end;
assert (wnoutrefresh iface.scr.entry_win)
in
(* draw a string for a single floating-point number *)
let get_float_str is_current mantissa exponent =
let sign_space =
if String.length exponent > 0 then
match exponent.[0] with
|'-' -> ""
|'+' -> ""
|_ -> " "
else
" "
in
if (is_current && iface.is_entering_exponent) || String.length exponent > 0 then
mantissa ^ " x10^" ^ sign_space ^ exponent
else if is_current || String.length mantissa > 0 then
mantissa
else
"0"
in
(* get a string representation of the data that is in the entry buffer *)
let data_string =
match iface.entry_type with
|IntEntry ->
if iface.is_entering_base then
"# " ^ iface.int_entry_buffer ^ "`" ^ iface.int_base_string
else
"# " ^ iface.int_entry_buffer
|FloatEntry ->
let mantissa_str = iface.gen_buffer.(0).re_mantissa
and exponent_str = iface.gen_buffer.(0).re_exponent in
let ff = get_float_str true mantissa_str exponent_str in
if iface.is_entering_units then
ff ^ "_" ^ iface.units_entry_buffer
else
ff
|ComplexEntry ->
let buffer = iface.gen_buffer.(0) in
let cc =
if iface.is_entering_imag then
let temp = get_float_str false buffer.re_mantissa buffer.re_exponent in
let re_str =
if String.length temp > 0 then temp
else "0"
in
let im_str = get_float_str true buffer.im_mantissa buffer.im_exponent in
match buffer.is_polar with
|false ->
"(" ^ re_str ^ ", " ^ im_str ^ ")"
|true ->
"(" ^ re_str ^ " <" ^ im_str ^ ")"
else
let re_str = get_float_str true buffer.re_mantissa buffer.re_exponent in
"(" ^ re_str ^ ")"
in
if iface.is_entering_units then
cc ^ "_" ^ iface.units_entry_buffer
else
cc
|FloatMatrixEntry ->
let ss = ref "[[" in
for el = 0 to pred iface.curr_buf do
let temp_re = get_float_str false iface.gen_buffer.(el).re_mantissa
iface.gen_buffer.(el).re_exponent in
if iface.has_multiple_rows && ((succ el) mod iface.matrix_cols) = 0 then
ss := !ss ^ temp_re ^ "]["
else
ss := !ss ^ temp_re ^ ", "
done;
let temp_re = get_float_str true iface.gen_buffer.(iface.curr_buf).re_mantissa
iface.gen_buffer.(iface.curr_buf).re_exponent in
ss := !ss ^ temp_re ^ "]]";
if iface.is_entering_units then
!ss ^ "_" ^ iface.units_entry_buffer
else
!ss
|ComplexMatrixEntry ->
let ss = ref "[[" in
for el = 0 to pred iface.curr_buf do
let temp_re = get_float_str false iface.gen_buffer.(el).re_mantissa
iface.gen_buffer.(el).re_exponent and
temp_im = get_float_str false iface.gen_buffer.(el).im_mantissa
iface.gen_buffer.(el).im_exponent in
(if iface.has_multiple_rows && ((succ el) mod iface.matrix_cols) = 0 then
match iface.gen_buffer.(el).is_polar with
|false ->
ss := !ss ^ "(" ^ temp_re ^ ", " ^ temp_im ^ ")]["
|true ->
ss := !ss ^ "(" ^ temp_re ^ " <" ^ temp_im ^ ")]["
else
match iface.gen_buffer.(el).is_polar with
|false ->
ss := !ss ^ "(" ^ temp_re ^ ", " ^ temp_im ^ "), "
|true ->
ss := !ss ^ "(" ^ temp_re ^ " <" ^ temp_im ^ "), ")
done;
(if iface.is_entering_imag then
let temp_re = get_float_str false iface.gen_buffer.(iface.curr_buf).re_mantissa
iface.gen_buffer.(iface.curr_buf).re_exponent and
temp_im = get_float_str true iface.gen_buffer.(iface.curr_buf).im_mantissa
iface.gen_buffer.(iface.curr_buf).im_exponent in
match iface.gen_buffer.(iface.curr_buf).is_polar with
|false ->
ss := !ss ^ "(" ^ temp_re ^ ", " ^ temp_im ^ ")]]"
|true ->
ss := !ss ^ "(" ^ temp_re ^ " <" ^ temp_im ^ ")]]"
else
let temp_re = get_float_str true iface.gen_buffer.(iface.curr_buf).re_mantissa
iface.gen_buffer.(iface.curr_buf).re_exponent in
ss := !ss ^ "(" ^ temp_re ^ ")]]");
if iface.is_entering_units then
!ss ^ "_" ^ iface.units_entry_buffer
else
!ss
|VarEntry ->
"@ " ^ iface.variable_entry_buffer
in
begin match iface.interface_mode with
|StandardEditMode ->
draw_entry_string data_string 0
|IntEditMode ->
draw_entry_string data_string 0
|AbbrevEditMode ->
let first_abbrev_match =
if iface.matched_abbrev_list = [] then ""
else List.hd iface.matched_abbrev_list
in
let highlight_len = String.length iface.abbrev_entry_buffer in
if highlight_len = 0 then
begin match iface.abbrev_or_const with
|IsAbbrev -> draw_entry_string "<enter command abbreviation>" 0
|IsConst -> draw_entry_string "<enter constant symbol>" 0
end
else
begin match iface.abbrev_or_const with
|IsAbbrev ->
let is_function =
match (Rcfile.translate_abbrev first_abbrev_match) with
|Function ff -> true
|_ -> false
in
if is_function then
draw_entry_string (first_abbrev_match ^ "( )") highlight_len
else
draw_entry_string first_abbrev_match highlight_len
|IsConst ->
draw_entry_string first_abbrev_match highlight_len
end
|BrowsingMode ->
()
|VarEditMode ->
if String.length iface.variable_entry_buffer = 0 then
draw_entry_string "<enter variable name>" 0
else
draw_entry_string data_string 0
|UnitEditMode ->
draw_entry_string data_string 0
end;
assert (wmove iface.scr.entry_win (iface.scr.ew_lines - 1) (iface.scr.ew_cols - 1))
let draw_update_entry iface =
draw_entry iface;
assert (doupdate ())
(* create the lists of abbreviations to display in the abbrev command
* help screen *)
let generate_abbrev_help () =
let rec trunc_list lst n =
if n = 0 then
[]
else
match lst with
|[] ->
[]
|head :: tail ->
head :: (trunc_list tail (pred n))
in
let get_abbr op =
try Rcfile.abbrev_of_operation op
with Not_found -> ""
in
let functions_str =
(get_abbr (Function Sin)) ^ " " ^
(get_abbr (Function Asin)) ^ " " ^
(get_abbr (Function Cos)) ^ " " ^
(get_abbr (Function Acos)) ^ " " ^
(get_abbr (Function Tan)) ^ " " ^
(get_abbr (Function Atan)) ^ " " ^
(get_abbr (Function Exp)) ^ " " ^
(get_abbr (Function Ln)) ^ " " ^
(get_abbr (Function Ten_x)) ^ " " ^
(get_abbr (Function Log10)) ^ " " ^
(get_abbr (Function Sq)) ^ " " ^
(get_abbr (Function Sqrt)) ^ " " ^
(get_abbr (Function Inv)) ^ " " ^
(get_abbr (Function Gamma)) ^ " " ^
(get_abbr (Function LnGamma)) ^ " " ^
(get_abbr (Function Erf)) ^ " " ^
(get_abbr (Function Erfc)) ^ " " ^
(get_abbr (Function Transpose)) ^ " " ^
(get_abbr (Function Re)) ^ " " ^
(get_abbr (Function Im)) ^ " " ^
(get_abbr (Function Mod)) ^ " " ^
(get_abbr (Function Floor)) ^ " " ^
(get_abbr (Function Ceiling)) ^ " " ^
(get_abbr (Function ToInt)) ^ " " ^
(get_abbr (Function ToFloat)) ^ " " ^
(get_abbr (Function Eval)) ^ " " ^
(get_abbr (Function Store)) ^ " " ^
(get_abbr (Function Purge))
in
let functions_str_wrap = trunc_list
(Utility.wordwrap_nspace functions_str 34 2) 5 in
let modes_str =
(get_abbr (Command SetRadians)) ^ " " ^
(get_abbr (Command SetDegrees)) ^ " " ^
(get_abbr (Command SetBin)) ^ " " ^
(get_abbr (Command SetOct)) ^ " " ^
(get_abbr (Command SetDec)) ^ " " ^
(get_abbr (Command SetHex)) ^ " " ^
(get_abbr (Command SetRect)) ^ " " ^
(get_abbr (Command SetPolar))
in
let modes_str_wrap = trunc_list
(Utility.wordwrap_nspace modes_str 34 2) 2 in
let misc_str =
(get_abbr (Command EnterPi)) ^ " " ^
(get_abbr (Command Undo)) ^ " " ^
(get_abbr (Command View))
in
let misc_str_wrap = trunc_list
(Utility.wordwrap_nspace misc_str 34 2) 1 in
{functions = functions_str_wrap;
modes = modes_str_wrap;
misc = misc_str_wrap}
(* create the list of constants to display in the abbrev command
* help screen *)
let generate_const_help () =
let rec trunc_list lst n =
if n = 0 then
[]
else
match lst with
|[] ->
[]
|head :: tail ->
head :: (trunc_list tail (pred n))
in
let rec make_symbols_string symbols_list symbols_str =
match symbols_list with
| [] ->
symbols_str
| head :: tail ->
make_symbols_string tail (head ^ " " ^ symbols_str)
in
let symbols = make_symbols_string !Rcfile.constant_symbols "" in
trunc_list (Utility.wordwrap_nspace symbols 34 2) 5
(* draw the help page in standard entry mode *)
let draw_help_standard iface win mvwaddstr_safe try_find =
if iface.help_page = 0 then begin
wattron win WA.bold;
assert (mvwaddstr win 5 0 "Common Operations:");
wattroff win WA.bold;
mvwaddstr_safe win 6 2 ("enter : " ^
try_find (Edit Enter));
mvwaddstr_safe win 7 2 ("drop : " ^
try_find (Command Drop));
mvwaddstr_safe win 8 2 ("swap : " ^
try_find (Command Swap));
mvwaddstr_safe win 9 2 ("backspace: " ^
try_find (Edit Backspace));
mvwaddstr_safe win 10 2 ("add : " ^
try_find (Function Add));
mvwaddstr_safe win 11 2 ("subtract : " ^
try_find (Function Sub));
mvwaddstr_safe win 12 2 ("multiply : " ^
try_find (Function Mult));
mvwaddstr_safe win 13 2 ("divide : " ^
try_find (Function Div));
mvwaddstr_safe win 14 2 ("y^x : " ^
try_find (Function Pow));
mvwaddstr_safe win 15 2 ("negation : " ^
try_find (Function Neg));
wattron win WA.bold;
mvwaddstr_safe win 16 0 "Miscellaneous:";
wattroff win WA.bold;
mvwaddstr_safe win 17 2 ("scientific notation : " ^
try_find (Edit SciNotBase));
mvwaddstr_safe win 18 2 ("abbreviation entry mode : " ^
try_find (Command BeginAbbrev));
mvwaddstr_safe win 19 2 ("stack browsing mode : " ^
try_find (Command BeginBrowse));
mvwaddstr_safe win 20 2 ("refresh display : " ^
try_find (Command Refresh));
mvwaddstr_safe win 21 2 ("quit : " ^
try_find (Command Quit));
assert (wnoutrefresh win)
end else begin
let adjust_len s len =
if String.length s < len then
s ^ (String.make (len - (String.length s)) ' ')
else
Str.string_before s len
in
let make_string colon_pos key_string abbr =
(adjust_len key_string colon_pos) ^ ": " ^ abbr
in
wattron win WA.bold;
mvwaddstr_safe win 5 0 "Autobindings:";
wattroff win WA.bold;
if Array.length !Rcfile.autobind_keys <= 0 then
mvwaddstr_safe win 6 2 "(none)"
else
for i = 0 to pred (min (iface.scr.hw_lines - 6) (Array.length
!Rcfile.autobind_keys)) do
let (key, key_string, bound_f, age) = !Rcfile.autobind_keys.(i) in
let abbr = match bound_f with
|None -> "(none)"
|Some op -> Rcfile.abbrev_of_operation op
in
mvwaddstr_safe win (i + 6) 2 (make_string 12 key_string abbr)
done;
assert (wnoutrefresh win)
end
(* draw help page in integer editing mode *)
let draw_help_intedit iface win mvwaddstr_safe try_find =
wattron win WA.bold;
mvwaddstr_safe win 5 0 "Integer Editing Operations:";
wattroff win WA.bold;
mvwaddstr_safe win 6 2 ("enter : " ^
try_find (Edit Enter));
mvwaddstr_safe win 7 2 ("set base : " ^
try_find (Edit SciNotBase));
mvwaddstr_safe win 8 2 ("cancel : " ^
try_find (IntEdit IntEditExit));
assert (wnoutrefresh win)
(* draw help page in abbrev/constant entry mode *)
let draw_help_abbrev iface win mvwaddstr_safe try_find =
if String.length iface.abbrev_entry_buffer = 0 then begin
let abbr_strings = generate_abbrev_help () in
let const_strings = generate_const_help () in
let rec print_help_lines lines v_pos =
begin match lines with
|[] ->
()
|head :: tail ->
mvwaddstr_safe win v_pos 2 head;
print_help_lines tail (succ v_pos)
end
in
begin match iface.abbrev_or_const with
|IsAbbrev ->
wattron win WA.bold;
mvwaddstr_safe win 5 0 "Abbreviations:";
wattroff win WA.bold;
mvwaddstr_safe win 6 1 "Common Functions:";
print_help_lines abbr_strings.functions 7;
mvwaddstr_safe win 13 1 "Change Modes:";
print_help_lines abbr_strings.modes 14;
mvwaddstr_safe win 17 1 "Miscellaneous:";
print_help_lines abbr_strings.misc 18;
mvwaddstr_safe win 20 1 ("execute abbreviation : " ^
try_find (Abbrev AbbrevEnter));
mvwaddstr_safe win 21 1 ("cancel abbreviation : " ^
try_find (Abbrev AbbrevExit));
|IsConst ->
wattron win WA.bold;
mvwaddstr_safe win 5 0 "Constants:";
wattroff win WA.bold;
print_help_lines const_strings 7;
mvwaddstr_safe win 12 1 ("enter constant : " ^
try_find (Abbrev AbbrevEnter));
end;
assert (wnoutrefresh win)
end else begin
wattron win WA.bold;
assert (mvwaddstr win 5 0 "Matched Abbreviations:");
wattroff win WA.bold;
let highlight_len = String.length iface.abbrev_entry_buffer in
let rec draw_matches v_pos match_list =
if v_pos < iface.scr.hw_lines then
begin match match_list with
|[] ->
()
|m :: tail ->
begin
(* highlight the first 'highlight_len' characters *)
wattron win WA.bold;
mvwaddstr_safe win v_pos 2
(Str.string_before m (highlight_len));
wattroff win WA.bold;
mvwaddstr_safe win v_pos (2 + highlight_len)
(Str.string_after m (highlight_len));
draw_matches (succ v_pos) tail
end
end
else
()
in
draw_matches 6 iface.matched_abbrev_list;
assert (wnoutrefresh win)
end
(* draw help page in variable editing mode *)
let draw_help_varedit iface win mvwaddstr_safe try_find =
wattron win WA.bold;
mvwaddstr_safe win 5 0 "Variable Mode Commands:";
wattroff win WA.bold;
mvwaddstr_safe win 6 2 ("enter variable : " ^
try_find (VarEdit VarEditEnter));
mvwaddstr_safe win 7 2 ("complete variable: " ^
try_find (VarEdit VarEditComplete));
mvwaddstr_safe win 8 2 ("cancel entry : " ^
try_find (VarEdit VarEditExit));
wattron win WA.bold;
mvwaddstr_safe win 10 0 "Matched variables:";
wattroff win WA.bold;
let highlight_len =
begin match iface.completion with
|None -> String.length iface.variable_entry_buffer
|Some _ -> 0
end
in
let rec draw_matches v_pos match_list count =
if v_pos < iface.scr.hw_lines then
begin match match_list with
|[] ->
()
|m :: tail ->
begin match iface.completion with
|None ->
(* highlight the first 'highlight_len' characters *)
wattron win WA.bold;
mvwaddstr_safe win v_pos 2
(Str.string_before m (highlight_len));
wattroff win WA.bold;
mvwaddstr_safe win v_pos (2 + highlight_len)
(Str.string_after m (highlight_len));
|Some num ->
(* highlight the entire selected match *)
if count = num then begin
wattron win WA.bold;
mvwaddstr_safe win v_pos 2 m;
wattroff win WA.bold;
end else
mvwaddstr_safe win v_pos 2 m;
end;
draw_matches (succ v_pos) tail (succ count)
end
else
()
in
if List.length iface.matched_variables = 0 then
mvwaddstr_safe win 11 2 "(none)"
else
draw_matches 11 iface.matched_variables 0;
assert (wnoutrefresh win)
(* draw help page in stack browsing mode *)
let draw_help_browsing iface win mvwaddstr_safe try_find =
wattron win WA.bold;
mvwaddstr_safe win 5 0 "Browsing Operations:";
wattroff win WA.bold;
mvwaddstr_safe win 6 2 ("prev : " ^
try_find (Browse PrevLine));
mvwaddstr_safe win 7 2 ("next : " ^
try_find (Browse NextLine));
mvwaddstr_safe win 8 2 ("scroll left : " ^
try_find (Browse ScrollLeft));
mvwaddstr_safe win 9 2 ("scroll right: " ^
try_find (Browse ScrollRight));
mvwaddstr_safe win 10 2 ("roll down : " ^
try_find (Browse RollDown));
mvwaddstr_safe win 11 2 ("roll up : " ^
try_find (Browse RollUp));
mvwaddstr_safe win 12 2 ("dup : " ^
try_find (Command Dup));
mvwaddstr_safe win 13 2 ("view : " ^
try_find (Browse ViewEntry));
mvwaddstr_safe win 14 2 ("edit : " ^
try_find (Browse EditEntry));
mvwaddstr_safe win 15 2 ("drop : " ^
try_find (Browse Drop1));
mvwaddstr_safe win 16 2 ("dropn : " ^
try_find (Browse DropN));
mvwaddstr_safe win 17 2 ("keep : " ^
try_find (Browse Keep));
mvwaddstr_safe win 18 2 ("keepn : " ^
try_find (Browse KeepN));
mvwaddstr_safe win 20 1 ("exit browsing mode: " ^
try_find (Browse EndBrowse));
assert (wnoutrefresh win)
(* display the help window *)
let draw_help (iface : interface_state_t) =
let mvwaddstr_safe w vert horiz st =
let st_trunc =
if String.length st > 36 then
Str.string_before st 36
else
st
in
assert (mvwaddstr w vert horiz st_trunc)
in
let modes = iface.calc#get_modes () in
begin match iface.scr.help_win with
|None ->
()
|Some win ->
wclear win;
wattron win WA.bold;
let s = sprintf "Orpie v%s" iface.version in
mvwaddstr_safe win 0 0 s;
wattroff win WA.bold;
let h_pos = String.length s in
mvwaddstr_safe win 0 (h_pos + 1) ("-- " ^ iface.tagline);
assert (mvwaddstr win 1 0 "--------------------------------------");
for i = 0 to pred iface.scr.hw_lines do
assert (mvwaddch win i 38 (int_of_char '|'))
done;
wattron win WA.bold;
assert (mvwaddstr win 2 0 "Calculator Modes:");
assert (mvwaddstr win 3 2 "angle: base: complex:");
wattroff win WA.bold;
let angle_str = match modes.angle with
|Rad -> "RAD"
|Deg -> "DEG" in
assert (mvwaddstr win 3 9 angle_str);
let base_str = match modes.base with
|Bin -> "BIN"
|Oct -> "OCT"
|Hex -> "HEX"
|Dec -> "DEC" in
assert (mvwaddstr win 3 20 base_str);
let complex_str = match modes.complex with
|Rect -> "REC"
|Polar -> "POL" in
assert (mvwaddstr win 3 34 complex_str);
let try_find op =
try Rcfile.key_of_operation op
with Not_found -> "(N/A)"
in
begin match iface.interface_mode with
|StandardEditMode | UnitEditMode ->
draw_help_standard iface win mvwaddstr_safe try_find
|IntEditMode ->
draw_help_intedit iface win mvwaddstr_safe try_find
|AbbrevEditMode ->
draw_help_abbrev iface win mvwaddstr_safe try_find
|VarEditMode ->
draw_help_varedit iface win mvwaddstr_safe try_find
|BrowsingMode ->
draw_help_browsing iface win mvwaddstr_safe try_find
end
end;
assert (wmove iface.scr.entry_win (iface.scr.ew_lines - 1) (iface.scr.ew_cols - 1))
let draw_message (iface : interface_state_t) msg =
draw_stack iface;
let error_lines = Utility.wordwrap msg (iface.scr.sw_cols-2) in
let trunc_error_lines =
if List.length error_lines > 4 then
(List.nth error_lines 0) :: (List.nth error_lines 1) ::
(List.nth error_lines 2) :: (List.nth error_lines 3) :: []
else
error_lines
in
let top_line =
begin match iface.scr.help_win with
|Some win -> 0
|None -> 2
end
in
for i = 0 to pred (List.length trunc_error_lines) do
assert (wmove iface.scr.stack_win (i + top_line) 0);
wclrtoeol iface.scr.stack_win;
assert (mvwaddstr iface.scr.stack_win (i + top_line) 1 (List.nth trunc_error_lines i))
done;
let s = String.make iface.scr.sw_cols '-' in
assert (mvwaddstr iface.scr.stack_win ((List.length trunc_error_lines) +
top_line) 0 s);
assert (wnoutrefresh iface.scr.stack_win);
assert (wmove iface.scr.entry_win (iface.scr.ew_lines - 1) (iface.scr.ew_cols - 1))
(* write an error message to the stack window *)
let draw_error (iface : interface_state_t) msg =
draw_message iface ("Error: " ^ msg)
(* display the "about" screen *)
let draw_about (iface : interface_state_t) =
erase ();
(* draw the box outline *)
let horiz_line = String.make iface.scr.cols '*' in
let vert_line_piece = String.make iface.scr.cols ' ' in
vert_line_piece.[0] <- '*';
vert_line_piece.[pred iface.scr.cols] <- '*';
assert (mvaddstr 0 0 horiz_line);
assert (mvaddstr (iface.scr.lines - 2) 0 horiz_line);
for i = 1 to iface.scr.lines - 3 do
assert (mvaddstr i 0 vert_line_piece)
done;
(* draw the text *)
let vert_center = (iface.scr.lines - 2) / 2
and horiz_center = iface.scr.cols / 2 in
let left_shift = 17 in
attron A.bold;
assert (mvaddstr (vert_center - 6) (horiz_center - left_shift)
("Orpie v" ^ iface.version));
attroff A.bold;
assert (mvaddstr (vert_center - 5) (horiz_center - left_shift)
"Copyright (C) 2004 Paul Pelzl");
assert (mvaddstr (vert_center - 3) (horiz_center - left_shift)
"\"Because, frankly, GUI calculator");
assert (mvaddstr (vert_center - 2) (horiz_center - left_shift)
" programs are pure evil. ");
attron A.bold;
assert (mvaddstr (vert_center - 2) (horiz_center - left_shift + 26)
"Orpie");
attroff A.bold;
assert (mvaddstr (vert_center - 2) (horiz_center - left_shift + 31)
", on");
assert (mvaddstr (vert_center - 1) (horiz_center - left_shift)
" the other hand, is only a little");
assert (mvaddstr (vert_center + 0) (horiz_center - left_shift)
" bit evil.\"");
assert (mvaddstr (vert_center + 2) (horiz_center - left_shift)
"Orpie comes with ABSOLUTELY NO");
assert (mvaddstr (vert_center + 3) (horiz_center - left_shift)
"WARRANTY. This is free software,");
assert (mvaddstr (vert_center + 4) (horiz_center - left_shift)
"and you are welcome to redistribute");
assert (mvaddstr (vert_center + 5) (horiz_center - left_shift)
"it under certain conditions; see");
assert (mvaddstr (vert_center + 6) (horiz_center - left_shift)
"'COPYING' for details.");
assert (mvaddstr (iface.scr.lines - 4) (horiz_center - 12)
"Press any key to continue.");
assert (move (iface.scr.lines - 1) (iface.scr.cols - 1));
assert (refresh ())
(* arch-tag: DO_NOT_CHANGE_044cbd96-d20b-48c6-92e7-62709c2aa3df *)
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