ncurses2-color_edit.adb [plain text]
with ncurses2.util; use ncurses2.util;
with ncurses2.genericPuts;
with Terminal_Interface.Curses; use Terminal_Interface.Curses;
procedure ncurses2.color_edit is
use Int_IO;
type RGB_Enum is (Redx, Greenx, Bluex);
procedure change_color (current : Color_Number;
field : RGB_Enum;
value : RGB_Value;
usebase : Boolean);
procedure change_color (current : Color_Number;
field : RGB_Enum;
value : RGB_Value;
usebase : Boolean) is
red, green, blue : RGB_Value;
begin
if usebase then
Color_Content (current, red, green, blue);
else
red := 0;
green := 0;
blue := 0;
end if;
case field is
when Redx => red := red + value;
when Greenx => green := green + value;
when Bluex => blue := blue + value;
end case;
declare
begin
Init_Color (current, red, green, blue);
exception
when Curses_Exception => Beep;
end;
end change_color;
package x is new ncurses2.genericPuts (100); use x;
tmpb : x.BS.Bounded_String;
tmp4 : String (1 .. 4);
tmp6 : String (1 .. 6);
tmp8 : String (1 .. 8);
value : RGB_Value := 0;
red, green, blue : RGB_Value;
max_colors : constant Natural := Number_Of_Colors;
current : Color_Number := 0;
field : RGB_Enum := Redx;
this_c : Key_Code := 0;
last_c : Key_Code;
begin
Refresh;
for i in Color_Number'(0) .. Color_Number (Number_Of_Colors) loop
Init_Pair (Color_Pair (i), White, i);
end loop;
Move_Cursor (Line => Lines - 2, Column => 0);
Add (Str => "Number: ");
myPut (tmpb, Integer (value));
myAdd (Str => tmpb);
loop
Switch_Character_Attribute (On => False,
Attr => (Bold_Character => True,
others => False));
Add (Line => 0, Column => 20, Str => "Color RGB Value Editing");
Switch_Character_Attribute (On => False,
Attr => (Bold_Character => True,
others => False));
for i in Color_Number'(0) .. Color_Number (Number_Of_Colors) loop
Move_Cursor (Line => 2 + Line_Position (i), Column => 0);
if current = i then
Add (Ch => '>');
else
Add (Ch => ' ');
end if;
Put (tmp8, Integer (i));
Set_Character_Attributes (Color => Color_Pair (i));
Add (Str => " ");
Set_Character_Attributes;
Refresh;
Color_Content (i, red, green, blue);
Add (Str => " R = ");
if current = i and field = Redx then
Switch_Character_Attribute (On => True,
Attr => (Stand_Out => True,
others => False));
end if;
Put (tmp4, Integer (red));
Add (Str => tmp4);
if current = i and field = Redx then
Set_Character_Attributes;
end if;
Add (Str => " G = ");
if current = i and field = Greenx then
Switch_Character_Attribute (On => True,
Attr => (Stand_Out => True,
others => False));
end if;
Put (tmp4, Integer (green));
Add (Str => tmp4);
if current = i and field = Greenx then
Set_Character_Attributes;
end if;
Add (Str => " B = ");
if current = i and field = Bluex then
Switch_Character_Attribute (On => True,
Attr => (Stand_Out => True,
others => False));
end if;
Put (tmp4, Integer (blue));
Add (Str => tmp4);
if current = i and field = Bluex then
Set_Character_Attributes;
end if;
Set_Character_Attributes;
Add (ch => ')');
end loop;
Add (Line => Line_Position (Number_Of_Colors + 3), Column => 0,
Str => "Use up/down to select a color, left/right to change " &
"fields.");
Add (Line => Line_Position (Number_Of_Colors + 4), Column => 0,
Str => "Modify field by typing nnn=, nnn-, or nnn+. ? for help.");
Move_Cursor (Line => 2 + Line_Position (current), Column => 0);
last_c := this_c;
this_c := Getchar;
if Is_Digit (this_c) then
value := 0;
end if;
case this_c is
when KEY_UP =>
current := (current - 1) mod Color_Number (max_colors);
when KEY_DOWN =>
current := (current + 1) mod Color_Number (max_colors);
when KEY_RIGHT =>
field := RGB_Enum'Val ((RGB_Enum'Pos (field) + 1) mod 3);
when KEY_LEFT =>
field := RGB_Enum'Val ((RGB_Enum'Pos (field) - 1) mod 3);
when
Character'Pos ('0') |
Character'Pos ('1') |
Character'Pos ('2') |
Character'Pos ('3') |
Character'Pos ('4') |
Character'Pos ('5') |
Character'Pos ('6') |
Character'Pos ('7') |
Character'Pos ('8') |
Character'Pos ('9') =>
value := value * 10 + RGB_Value (ctoi (Code_To_Char (this_c)));
when Character'Pos ('+') =>
change_color (current, field, value, True);
when Character'Pos ('-') =>
change_color (current, field, -value, True);
when Character'Pos ('=') =>
change_color (current, field, value, False);
when Character'Pos ('?') =>
Erase;
P (" RGB Value Editing Help");
P ("");
P ("You are in the RGB value editor. Use the arrow keys to " &
"select one of");
P ("the fields in one of the RGB triples of the current colors;" &
" the one");
P ("currently selected will be reverse-video highlighted.");
P ("");
P ("To change a field, enter the digits of the new value; they" &
" are echoed");
P ("as entered. Finish by typing `='. The change will take" &
" effect instantly.");
P ("To increment or decrement a value, use the same procedure," &
" but finish");
P ("with a `+' or `-'.");
P ("");
P ("To quit, do `x' or 'q'");
Pause;
Erase;
when Character'Pos ('q') |
Character'Pos ('x') =>
null;
when others =>
Beep;
end case;
Move_Cursor (Line => Lines - 2, Column => 0);
Put (tmp6, Integer (value));
Add (Str => "Number: " & tmp6);
Clear_To_End_Of_Line;
exit when this_c = Character'Pos ('x') or
this_c = Character'Pos ('q');
end loop;
Erase;
End_Windows;
end ncurses2.color_edit;