-- ----------------------------------------------------------------- --
-- --
-- This is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public --
-- License as published by the Free Software Foundation; either --
-- version 2 of the License, or (at your option) any later version. --
-- --
-- This software 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 library; if not, write to the --
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-- ----------------------------------------------------------------- --
-- ----------------------------------------------------------------- --
-- This is a translation, to the Ada programming language, of the --
-- original C test files written by Sam Lantinga - www.libsdl.org --
-- translation made by Antonio F. Vargas - www.adapower.net/~avargas --
-- ----------------------------------------------------------------- --
-- ----------------------------------------------------------------- --
-- WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
-- ----------------------------------------------------------------- --
-- SERIOUS WARNING: The Ada code in this files may, at some points,
-- rely directly on pointer arithmetic which is considered very
-- unsafe and PRONE TO ERROR. The AdaSDL_Framebuffer examples are
-- more appropriate and easier to understand. They should be used in
-- replacement of this files. Please go there.
-- This file exists only for the sake of completness and to test
-- AdaSDL without the dependency of AdaSDL_Framebuffer.
-- ----------------------------------------------------------------- --
-- WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
-- ----------------------------------------------------------------- --
with System.Address_To_Access_Conversions;
with Lib_C;
with Interfaces.C.Strings;
with Ada.Text_IO;
use Ada.Text_IO;
with Ada.Command_Line;
with Ada.Characters.Handling;
with GNAT.OS_Lib;
with SDL.Types; use SDL.Types;
with SDL.Video;
with SDL.Thread;
with SDL.Error;
with SDL.Quit;
with SDL.Keyboard;
with SDL.Timer;
with ThreadWin_Sprogs;
use ThreadWin_Sprogs;
procedure ThreadWin is
package C renames Interfaces.C;
use type C.int;
use type C.size_t;
package CS renames Interfaces.C.Strings;
package CL renames Ada.Command_Line;
package CH renames Ada.Characters.Handling;
package V renames SDL.Video;
use type V.Surface_Flags;
use type V.Surface_ptr;
package Tr renames SDL.Thread;
use type SDL.Init_Flags;
package Er renames SDL.Error;
package Kb renames SDL.Keyboard;
package Tm renames SDL.Timer;
use Uint8_Ptrs;
use Uint8_PtrOps;
Screen_Width : constant := 640;
Screen_Height : constant := 480;
screen : V.Surface_ptr;
icon : V.Surface_ptr;
parsed : Boolean;
buffer : Uint8_PtrOps.Pointer;
palette : V.Colors_Array (0 .. 255);
init_flags : SDL.Init_Flags;
video_bpp : Uint8;
video_flags : V.Surface_Flags;
mouse_thread : Tr.SDL_Thread_ptr;
keybd_thread : Tr.SDL_Thread_ptr;
argc : Integer := CL.Argument_Count;
argv_i : Integer := 1;
begin
-- Set the options, based on command line arguments
init_flags := SDL.INIT_VIDEO;
video_bpp := 8;
video_flags := V.SWSURFACE;
parsed := True;
while parsed loop
-- If the threaded option is enabled, and the SDL library hasn't
-- been compiled with threaded events enabled, then the mouse and
-- keyboard won't respond.
if argc >= 1 and then CL.Argument (argv_i) = "-threaded" then
init_flags := init_flags or SDL.INIT_EVENTTHREAD;
argc := argc - 1;
argv_i := argv_i + 1;
Put_Line ("Running with threaded events");
elsif argc >= 1 and then CL.Argument (argv_i) = "-fullscreen" then
video_flags := video_flags or V.FULLSCREEN;
argc := argc - 1;
argv_i := argv_i + 1;
elsif (argc >= 2) and then
(CL.Argument (argv_i) = "-bpp") and then
CH.Is_Digit (CL.Argument (argv_i + 1) (1)) then
declare
package Uint8_IO is
new Modular_IO (Uint8);
use Uint8_IO;
last : Positive;
begin
Uint8_IO.Get (CL.Argument (argv_i), video_bpp, last);
end;
argc := argc - 2;
argv_i := argv_i + 2;
else
parsed := False;
end if;
end loop;
-- Initialize SDL with the requested flags
if SDL.Init (init_flags) < 0 then
Put_Line ("Couldn't initialize SDL: " & Er.Get_Error);
GNAT.OS_Lib.OS_Exit (1);
end if;
SDL.Quit.atexit (SDL.SDL_Quit'Access);
-- Set the icon -- this must be done before the first mode set
LoadIconSurface ("icon.bmp", icon_mask, icon);
if icon /= null then
V.WM_SetIcon (icon, icon_mask.all);
-- V.WM_SetIcon (icon, null);
end if;
-- Initialize the display
screen := V.SetVideoMode (Screen_Width, Screen_Height,
C.int (video_bpp), video_flags);
if screen = null then
Put_Line ("Couldn't set " & Integer'Image (Screen_Width) &
"x" & Integer'Image (Screen_Height) &
" video mode: " & Er.Get_Error);
GNAT.OS_Lib.OS_Exit (1);
end if;
Put ("Running in ");
if (screen.flags and V.FULLSCREEN) /= 0 then
Put (" fullscreen");
else
Put (" windowed");
end if;
Put_Line (" mode");
-- Enable printable characters
Kb.EnableUNICODE (1);
-- Set an event filter that discards everything but QUIT;
Ev.SetEventFilter (FilterEvents'Access);
-- Create the event handling threads
mouse_thread := Tr.CreateThread (HandleMouse'Access, System.Null_Address);
keybd_thread := Tr.CreateThread (HandleKeyboard'Access, System.Null_Address);
-- Set the surface pixels and refresh!
for i in C.size_t range 0 .. 255 loop
palette (i) := (Uint8 (255 - i),
Uint8 (255 - i),
Uint8 (255 - i),0);
end loop;
V.SetColors (screen, palette, C.int(palette'First), palette'Length);
if V.LockSurface (screen) < 0 then
Put_Line ("Couldn't lock display surface: " & Er.Get_Error);
GNAT.OS_Lib.OS_Exit (2);
end if;
buffer := Pointer (To_Pointer (screen.pixels));
for i in 0 .. screen.h - 1 loop
buffer := Pointer (To_Pointer (
Lib_C.memset (
To_Address (Object_Pointer (buffer)),
(i * 255)/screen.h,
C.size_t(screen.w) * C.size_t(screen.format.BytesPerPixel))));
buffer := buffer + C.ptrdiff_t (screen.pitch);
end loop;
V.UnlockSurface (screen);
V.UpdateRect (screen, 0, 0, 0, 0);
-- Loop, wait for QUIT
while not done loop
if (init_flags and SDL.INIT_EVENTTHREAD) = 0 then
Ev.PumpEvents; -- Need when event thread is off
end if;
if Ev.PeepEvents (null, 0, Ev.PEEKEVENT, Ev.QUITMASK) /= 0 then
done := True;
end if;
-- Give up some CPU so the events can accumulate
Tm.SDL_Delay (20);
end loop;
Tr.WaitThread (mouse_thread, null);
Tr.WaitThread (keybd_thread, null);
GNAT.OS_Lib.OS_Exit (0);
end ThreadWin;
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