lib/mnit_linux/linux_opengles1.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2011-2013 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 module linux_opengles1
  18
  19 import mnit # for
  20 # import opengles1
  21
  22 import sdl
  23
  24 in "C" `{
  25         NativeWindowType mnit_window;
  26         EGLNativeDisplayType mnit_native_display;
  27
  28         SDL_Surface* mnit_sdl_surface;
  29 `}
  30
  31 redef class Display
  32         fun wanted_width: Int do return 800
  33         fun wanted_height: Int do return 600
  34 end
  35
  36 redef class Opengles1Display
  37
  38         # display managing the window, events, fonts? and image loading?
  39         var sdl_display: SDLDisplay
  40
  41         redef fun extern_init do
  42                 sdl_display = new SDLDisplay( wanted_width, wanted_height )
  43                 init_from_sdl( sdl_display )
  44                 return super
  45         end
  46
  47         fun init_from_sdl( sdl_display: SDLDisplay ): Bool is extern `{
  48                 mnit_sdl_surface = sdl_display;
  49
  50                 mnit_window = (NativeWindowType)XOpenDisplay(NULL);
  51                 mnit_native_display = (EGLNativeDisplayType)mnit_window;
  52
  53                 if (!mnit_window)
  54                 {
  55                         fprintf(stderr, "ERROR: unable to get display!n");
  56                         return 3;
  57                 }
  58
  59                 SDL_SysWMinfo mnit_sys_info;
  60                 SDL_VERSION(&mnit_sys_info.version);
  61                 if(SDL_GetWMInfo(&mnit_sys_info) <= 0)
  62                 {
  63                         printf("Unable to get window handle");
  64                         return 0;
  65                 }
  66
  67                 mnit_window = (EGLNativeWindowType)mnit_sys_info.info.x11.window;
  68
  69                 return 0;
  70         `}
  71
  72         redef fun close
  73         do
  74                 super
  75
  76                 sdl_display.destroy
  77         end
  78 end
  79
  80 redef extern Opengles1Image
  81         new from_sdl_image( sdl_image: SDLImage ) is extern `{
  82                 return mnit_opengles_load_image( sdl_image->pixels, sdl_image->w, sdl_image->h, sdl_image->format->Amask );
  83         `}
  84
  85         # using sdl
  86         new from_file( path: String ) is extern import String.to_cstring `{
  87                 SDL_Surface *sdl_image;
  88                 struct mnit_opengles_Texture *opengles_image;
  89
  90                 sdl_image = IMG_Load( String_to_cstring( path ) );
  91                 if ( !sdl_image ) {
  92                         fprintf(stderr, "SDL failed to load image <%s>: %s\n", String_to_cstring(path), IMG_GetError());
  93                         return NULL;
  94                 } else {
  95                         opengles_image = mnit_opengles_load_image( sdl_image->pixels, sdl_image->w, sdl_image->h, sdl_image->format->Amask );
  96                         SDL_FreeSurface(sdl_image);
  97                         return opengles_image;
  98                 }
  99         `}
 100 end