-- ----------------------------------------------------------------- --
-- --
-- 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 Interfaces.C.Strings;
with Ada.Text_IO; use Ada.Text_IO;
with Ada.Characters.Handling;
with Ada.Command_Line;
with Ada.Strings.Unbounded;
with GNAT.OS_Lib;
with SDL.Types; use SDL.Types;
with SDL.Events;
with SDL.Video;
with SDL.Error;
with SDL.Quit;
with Testwm_Sprogs; use Testwm_Sprogs;
with Lib_C;
procedure testwm is
package C renames Interfaces.C;
use type C.int;
use type C.size_t;
package CS renames Interfaces.C.Strings;
use type CS.chars_ptr;
package CL renames Ada.Command_Line;
package CH renames Ada.Characters.Handling;
package US renames Ada.Strings.Unbounded;
use type US.Unbounded_String;
use type V.Surface_Flags;
use type V.Surface_ptr;
package Ev renames SDL.Events;
use type Ev.Event_Type;
package Er renames SDL.Error;
package Q renames SDL.Quit;
-- =============================================
Screen_Width : constant := 640;
Screen_Height : constant := 480;
event : Ev.Event;
title : US.Unbounded_String;
type Title_Access_Type is access String;
The_Title : Title_Access_Type;
icon : V.Surface_ptr;
icon_mask : Icon_Mask_Array_Access;
parsed : C.int;
buffer : Uint8_PtrOps.Pointer;
screen : V.Surface_ptr;
use Uint8_PtrOps;
use Uint8_Ptrs;
palette : V.Colors_Array (0 .. 255);
video_flags : V.Surface_Flags;
argc : Integer := CL.Argument_Count;
package Uint8_IO is new Ada.Text_IO.Modular_IO (Uint8);
video_bpp : Uint8;
Wait_Event_Result : C.int;
-- =============================================
begin
if SDL.Init (SDL.INIT_VIDEO) < 0 then
Put_Line ("Couldn't initialize SDl: " & Er.Get_Error);
GNAT.OS_Lib.OS_Exit (1);
end if;
Q.atexit (SDL.SDL_Quit'Access);
-- Check command line arguments
video_bpp := 8;
video_flags := V.SWSURFACE;
parsed := 1;
while parsed /= 0 loop
if argc >= 1 and then CL.Argument (argc) = "-fullscreen" then
video_flags := video_flags or V.FULLSCREEN;
argc := argc - 1;
elsif (argc >= 2) and then
(CL.Argument (argc - 1) = "-bpp") and then
CH.Is_Digit (CL.Argument (argc) (1)) then
declare
last : positive;
use Uint8_IO;
begin
Get (CL.Argument (argc), video_bpp, last);
end;
argc := argc - 2;
elsif (argc >= 2) and then
(CL.Argument (argc - 1) = "-title") then
The_Title := new String'(CL.Argument (argc));
argc := argc - 2;
else
parsed := 0;
end if;
end loop;
-- 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;
if The_Title = null then
The_Title := new String'("Testing 1.. 2.. 3...");
end if;
V.WM_Set_Caption (The_Title.all, "testwm");
-- See if it it's really set
V.WM_Get_Caption_Title (title);
if title /= US.Null_Unbounded_String then
Put_Line ("Title was set to: " & US.To_String (title));
else
Put_Line ("No window title was set!");
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");
-- Set an event filter that discards everything but QUIT
Ev.SetEventFilter (FilterEvents'Access);
-- Ignore key up events, they don't even get filtered
declare
Dummy_Uint8 : Uint8;
begin
Dummy_Uint8 := Ev.EventState (Ev.KEYUP, Ev.IGNORE);
end;
-- 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
loop
Ev.Wait_Event (Wait_Event_Result,event);
exit when Wait_Event_Result = 0;
case event.the_type is
when Ev.ISUSEREVENT =>
Put_Line ("Handling internal quit request");
Put_Line ("Bye bye..");
return;
when Ev.QUIT =>
Put_Line ("Bye bye..");
return;
when others =>
-- this should never happen
Put_Line("Warning: Event " &
Ev.Event_Type'Image (event.the_type) &
" wasn't filtered");
end case;
end loop;
Put_Line ("WaitEvent error: " & Er.Get_Error);
GNAT.OS_Lib.OS_Exit (0);
end testwm;
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