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