mirror of
https://github.com/Aigor44/ncursesw-morphos.git
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11d10ad0a1
+ add a configure check to ignore some of the plethora of non-working C++ cross-compilers. + build-fixes for Ada95 with gnat 4.9
186 lines
7.8 KiB
Ada
186 lines
7.8 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT ncurses Binding Samples --
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-- --
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-- Sample.Header_Handler --
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-- --
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-- B O D Y --
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-- --
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------------------------------------------------------------------------------
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-- Copyright (c) 1998-2011,2014 Free Software Foundation, Inc. --
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-- --
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-- Permission is hereby granted, free of charge, to any person obtaining a --
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-- copy of this software and associated documentation files (the --
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-- "Software"), to deal in the Software without restriction, including --
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-- without limitation the rights to use, copy, modify, merge, publish, --
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-- distribute, distribute with modifications, sublicense, and/or sell --
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-- copies of the Software, and to permit persons to whom the Software is --
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-- furnished to do so, subject to the following conditions: --
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-- --
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-- The above copyright notice and this permission notice shall be included --
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-- in all copies or substantial portions of the Software. --
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-- --
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-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
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-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
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-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
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-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
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-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
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-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
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-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
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-- --
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-- Except as contained in this notice, the name(s) of the above copyright --
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-- holders shall not be used in advertising or otherwise to promote the --
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-- sale, use or other dealings in this Software without prior written --
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-- authorization. --
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------------------------------------------------------------------------------
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-- Author: Juergen Pfeifer, 1996
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-- Version Control
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-- $Revision: 1.20 $
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-- $Date: 2014/09/13 19:10:18 $
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-- Binding Version 01.00
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------------------------------------------------------------------------------
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with Ada.Calendar; use Ada.Calendar;
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with Terminal_Interface.Curses.Text_IO.Integer_IO;
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with Sample.Manifest; use Sample.Manifest;
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pragma Elaborate_All (Terminal_Interface.Curses.Text_Io.Integer_IO);
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-- This package handles the painting of the header line of the screen.
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--
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package body Sample.Header_Handler is
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package Int_IO is new
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Terminal_Interface.Curses.Text_IO.Integer_IO (Integer);
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use Int_IO;
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Header_Window : Window := Null_Window;
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Display_Hour : Integer := -1; -- hour last displayed
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Display_Min : Integer := -1; -- minute last displayed
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Display_Day : Integer := -1; -- day last displayed
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Display_Month : Integer := -1; -- month last displayed
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-- This is the routine handed over to the curses library to be called
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-- as initialization routine when ripping of the header lines from
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-- the screen. This routine must follow C conventions.
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function Init_Header_Window (Win : Window;
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Columns : Column_Count) return Integer;
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pragma Convention (C, Init_Header_Window);
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procedure Internal_Update_Header_Window (Do_Update : Boolean);
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-- The initialization must be called before Init_Screen. It steals two
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-- lines from the top of the screen.
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procedure Init_Header_Handler
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is
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begin
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Rip_Off_Lines (2, Init_Header_Window'Access);
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end Init_Header_Handler;
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procedure N_Out (N : Integer);
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-- Emit a two digit number and ensure that a leading zero is generated if
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-- necessary.
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procedure N_Out (N : Integer)
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is
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begin
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if N < 10 then
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Add (Header_Window, '0');
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Put (Header_Window, N, 1);
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else
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Put (Header_Window, N, 2);
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end if;
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end N_Out;
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-- Paint the header window. The input parameter is a flag indicating
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-- whether or not the screen should be updated physically after painting.
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procedure Internal_Update_Header_Window (Do_Update : Boolean)
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is
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type Month_Name_Array is
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array (Month_Number'First .. Month_Number'Last) of String (1 .. 9);
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Month_Names : constant Month_Name_Array :=
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("January ",
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"February ",
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"March ",
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"April ",
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"May ",
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"June ",
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"July ",
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"August ",
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"September",
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"October ",
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"November ",
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"December ");
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Now : constant Time := Clock;
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Sec : constant Integer := Integer (Seconds (Now));
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Hour : constant Integer := Sec / 3600;
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Minute : constant Integer := (Sec - Hour * 3600) / 60;
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Mon : constant Month_Number := Month (Now);
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D : constant Day_Number := Day (Now);
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begin
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if Header_Window /= Null_Window then
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if Minute /= Display_Min
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or else Hour /= Display_Hour
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or else Display_Day /= D
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or else Display_Month /= Mon
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then
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Move_Cursor (Header_Window, 0, 0);
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N_Out (D); Add (Header_Window, '.');
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Add (Header_Window, Month_Names (Mon));
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Move_Cursor (Header_Window, 1, 0);
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N_Out (Hour); Add (Header_Window, ':');
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N_Out (Minute);
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Display_Min := Minute;
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Display_Hour := Hour;
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Display_Month := Mon;
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Display_Day := D;
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Refresh_Without_Update (Header_Window);
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if Do_Update then
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Update_Screen;
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end if;
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end if;
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end if;
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end Internal_Update_Header_Window;
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-- This routine is called in the keyboard input timeout handler. So it will
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-- periodically update the header line of the screen.
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procedure Update_Header_Window
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is
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begin
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Internal_Update_Header_Window (True);
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end Update_Header_Window;
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function Init_Header_Window (Win : Window;
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Columns : Column_Count) return Integer
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is
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Title : constant String := "Ada 95 ncurses Binding Sample";
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Pos : Column_Position;
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begin
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Header_Window := Win;
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if Win /= Null_Window then
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if Has_Colors then
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Set_Background (Win => Win,
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Ch => (Ch => ' ',
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Color => Header_Color,
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Attr => Normal_Video));
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Set_Character_Attributes (Win => Win,
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Attr => Normal_Video,
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Color => Header_Color);
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Erase (Win);
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end if;
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Leave_Cursor_After_Update (Win, True);
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Pos := Columns - Column_Position (Title'Length);
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Add (Win, 0, Pos / 2, Title);
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-- In this phase we must not allow a physical update, because
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-- ncurses is not properly initialized at this point.
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Internal_Update_Header_Window (False);
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return 0;
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else
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return -1;
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end if;
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end Init_Header_Window;
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end Sample.Header_Handler;
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