-- ----------------------------------------------------------------- -- -- -- -- 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;