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Diffstat (limited to 'ncurses-5.3/Ada95/src/terminal_interface-curses-text_io.adb')
| -rw-r--r-- | ncurses-5.3/Ada95/src/terminal_interface-curses-text_io.adb | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/ncurses-5.3/Ada95/src/terminal_interface-curses-text_io.adb b/ncurses-5.3/Ada95/src/terminal_interface-curses-text_io.adb new file mode 100644 index 0000000..64ac2b6 --- /dev/null +++ b/ncurses-5.3/Ada95/src/terminal_interface-curses-text_io.adb @@ -0,0 +1,337 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT ncurses Binding -- +-- -- +-- Terminal_Interface.Curses.Text_IO -- +-- -- +-- B O D Y -- +-- -- +------------------------------------------------------------------------------ +-- Copyright (c) 1998 Free Software Foundation, Inc. -- +-- -- +-- Permission is hereby granted, free of charge, to any person obtaining a -- +-- copy of this software and associated documentation files (the -- +-- "Software"), to deal in the Software without restriction, including -- +-- without limitation the rights to use, copy, modify, merge, publish, -- +-- distribute, distribute with modifications, sublicense, and/or sell -- +-- copies of the Software, and to permit persons to whom the Software is -- +-- furnished to do so, subject to the following conditions: -- +-- -- +-- The above copyright notice and this permission notice shall be included -- +-- in all copies or substantial portions of the Software. -- +-- -- +-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -- +-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -- +-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -- +-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -- +-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -- +-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR -- +-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. -- +-- -- +-- Except as contained in this notice, the name(s) of the above copyright -- +-- holders shall not be used in advertising or otherwise to promote the -- +-- sale, use or other dealings in this Software without prior written -- +-- authorization. -- +------------------------------------------------------------------------------ +-- Author: Juergen Pfeifer, 1996 +-- Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en +-- Version Control: +-- $Revision$ +-- Binding Version 01.00 +------------------------------------------------------------------------------ +package body Terminal_Interface.Curses.Text_IO is + + Default_Window : Window := Null_Window; + + procedure Set_Window (Win : in Window) + is + begin + Default_Window := Win; + end Set_Window; + + function Get_Window return Window + is + begin + if Default_Window = Null_Window then + return Standard_Window; + else + return Default_Window; + end if; + end Get_Window; + pragma Inline (Get_Window); + + procedure Flush (Win : in Window) + is + begin + Refresh (Win); + end Flush; + + procedure Flush + is + begin + Flush (Get_Window); + end Flush; + + -------------------------------------------- + -- Specification of line and page lengths -- + -------------------------------------------- + + -- There are no set routines in this package. I assume, that you allocate + -- the window with an appropriate size. + -- A scroll-window is interpreted as an page with unbounded page length, + -- i.e. it returns the conventional 0 as page length. + + function Line_Length (Win : in Window) return Count + is + N_Lines : Line_Count; + N_Cols : Column_Count; + begin + Get_Size (Win, N_Lines, N_Cols); + if Natural (N_Cols) > Natural (Count'Last) then + raise Layout_Error; + end if; + return Count (N_Cols); + end Line_Length; + + function Line_Length return Count + is + begin + return Line_Length (Get_Window); + end Line_Length; + + function Page_Length (Win : in Window) return Count + is + N_Lines : Line_Count; + N_Cols : Column_Count; + begin + if Scrolling_Allowed (Win) then + return 0; + else + Get_Size (Win, N_Lines, N_Cols); + if Natural (N_Lines) > Natural (Count'Last) then + raise Layout_Error; + end if; + return Count (N_Lines); + end if; + end Page_Length; + + function Page_Length return Count + is + begin + return Page_Length (Get_Window); + end Page_Length; + + ------------------------------------ + -- Column, Line, and Page Control -- + ------------------------------------ + procedure New_Line (Win : in Window; Spacing : in Positive_Count := 1) + is + P_Size : constant Count := Page_Length (Win); + begin + if Spacing not in Positive_Count then + raise Constraint_Error; + end if; + + for I in 1 .. Spacing loop + if P_Size > 0 and then Line (Win) >= P_Size then + New_Page (Win); + else + Add (Win, ASCII.LF); + end if; + end loop; + end New_Line; + + procedure New_Line (Spacing : in Positive_Count := 1) + is + begin + New_Line (Get_Window, Spacing); + end New_Line; + + procedure New_Page (Win : in Window) + is + begin + Clear (Win); + end New_Page; + + procedure New_Page + is + begin + New_Page (Get_Window); + end New_Page; + + procedure Set_Col (Win : in Window; To : in Positive_Count) + is + Y : Line_Position; + X1 : Column_Position; + X2 : Column_Position; + N : Natural; + begin + if To not in Positive_Count then + raise Constraint_Error; + end if; + + Get_Cursor_Position (Win, Y, X1); + N := Natural (To); N := N - 1; + X2 := Column_Position (N); + if X1 > X2 then + New_Line (Win, 1); + X1 := 0; + end if; + if X1 < X2 then + declare + Filler : constant String (Integer (X1) .. (Integer (X2) - 1)) + := (others => ' '); + begin + Put (Win, Filler); + end; + end if; + end Set_Col; + + procedure Set_Col (To : in Positive_Count) + is + begin + Set_Col (Get_Window, To); + end Set_Col; + + procedure Set_Line (Win : in Window; To : in Positive_Count) + is + Y1 : Line_Position; + Y2 : Line_Position; + X : Column_Position; + N : Natural; + begin + if To not in Positive_Count then + raise Constraint_Error; + end if; + + Get_Cursor_Position (Win, Y1, X); + N := Natural (To); N := N - 1; + Y2 := Line_Position (N); + if Y2 < Y1 then + New_Page (Win); + Y1 := 0; + end if; + if Y1 < Y2 then + New_Line (Win, Positive_Count (Y2 - Y1)); + end if; + end Set_Line; + + procedure Set_Line (To : in Positive_Count) + is + begin + Set_Line (Get_Window, To); + end Set_Line; + + function Col (Win : in Window) return Positive_Count + is + Y : Line_Position; + X : Column_Position; + N : Natural; + begin + Get_Cursor_Position (Win, Y, X); + N := Natural (X); N := N + 1; + if N > Natural (Count'Last) then + raise Layout_Error; + end if; + return Positive_Count (N); + end Col; + + function Col return Positive_Count + is + begin + return Col (Get_Window); + end Col; + + function Line (Win : in Window) return Positive_Count + is + Y : Line_Position; + X : Column_Position; + N : Natural; + begin + Get_Cursor_Position (Win, Y, X); + N := Natural (Y); N := N + 1; + if N > Natural (Count'Last) then + raise Layout_Error; + end if; + return Positive_Count (N); + end Line; + + function Line return Positive_Count + is + begin + return Line (Get_Window); + end Line; + + ----------------------- + -- Characters Output -- + ----------------------- + + procedure Put (Win : in Window; Item : in Character) + is + P_Size : constant Count := Page_Length (Win); + Y : Line_Position; + X : Column_Position; + L : Line_Count; + C : Column_Count; + begin + if P_Size > 0 then + Get_Cursor_Position (Win, Y, X); + Get_Size (Win, L, C); + if (Y + 1) = L and then (X + 1) = C then + New_Page (Win); + end if; + end if; + Add (Win, Item); + end Put; + + procedure Put (Item : in Character) + is + begin + Put (Get_Window, Item); + end Put; + + -------------------- + -- Strings-Output -- + -------------------- + + procedure Put (Win : in Window; Item : in String) + is + P_Size : constant Count := Page_Length (Win); + Y : Line_Position; + X : Column_Position; + L : Line_Count; + C : Column_Count; + begin + if P_Size > 0 then + Get_Cursor_Position (Win, Y, X); + Get_Size (Win, L, C); + if (Y + 1) = L and then (X + 1 + Item'Length) >= C then + New_Page (Win); + end if; + end if; + Add (Win, Item); + end Put; + + procedure Put (Item : in String) + is + begin + Put (Get_Window, Item); + end Put; + + procedure Put_Line + (Win : in Window; + Item : in String) + is + begin + Put (Win, Item); + New_Line (Win, 1); + end Put_Line; + + procedure Put_Line + (Item : in String) + is + begin + Put_Line (Get_Window, Item); + end Put_Line; + +end Terminal_Interface.Curses.Text_IO; |