X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=src%2Fgacela_SDL.c;h=79774444e00acb4caef88de9e842d4057e036b16;hb=afd5b9c3d8e3e5ce81893771c7cac53f6469aa07;hp=ce2f2cc9f0f94166c2d09565ded2754176af2dd9;hpb=2fe7e96d7e06b93fa953d3b722a25517d5adb31f;p=gacela.git

diff --git a/src/gacela_SDL.c b/src/gacela_SDL.c
index ce2f2cc..7977444 100644
--- a/src/gacela_SDL.c
+++ b/src/gacela_SDL.c
@@ -20,6 +20,7 @@
 #include <SDL/SDL_events.h>
 #include <SDL/SDL_image.h>
 #include <SDL/SDL_mixer.h>
+#include <SDL/SDL_rotozoom.h>
 #include "gacela_SDL.h"
 
 struct surface
@@ -59,6 +60,16 @@ get_surface_address (SCM surface_smob)
   return surface->surface_address;
 }
 
+SCM
+get_surface_filename (SCM surface_smob)
+{
+  struct surface *surface;
+
+  scm_assert_smob_type (surface_tag, surface_smob);
+  surface = (struct surface *) SCM_SMOB_DATA (surface_smob);
+  return surface->filename;
+}
+
 SCM
 get_surface_width (SCM surface_smob)
 {
@@ -153,6 +164,12 @@ gacela_SDL_SetVideoMode (SCM width, SCM height, SCM bpp, SCM flags)
   }
 }
 
+SCM
+gacela_SDL_FreeSurface (SCM surface)
+{
+  return scm_from_int (free_surface (surface));
+}
+
 SCM
 gacela_SDL_WM_SetCaption (SCM title, SCM icon)
 {
@@ -278,6 +295,19 @@ gacela_SDL_EnableKeyRepeat (SCM delay, SCM interval)
   return scm_from_int (SDL_EnableKeyRepeat (scm_to_int (delay), scm_to_int (interval)));
 }
 
+SCM
+gacela_zoomSurface (SCM src, SCM zoomx, SCM zoomy, SCM smooth)
+{
+  SDL_Surface *image = zoomSurface (get_surface_address (src), scm_to_double (zoomx), scm_to_double (zoomy), scm_to_int (smooth));
+
+  if (image) {
+    return make_surface (get_surface_filename (src), image);
+  }
+  else {
+    return SCM_BOOL_F;
+  }
+}
+
 SCM
 gacela_Mix_OpenAudio (SCM frequency, SCM format, SCM channels, SCM chunksize)
 {
@@ -369,6 +399,7 @@ SDL_register_functions (void* data)
   scm_set_smob_mark (surface_tag, mark_surface);
   scm_set_smob_free (surface_tag, free_surface);
   scm_set_smob_print (surface_tag, print_surface);
+  scm_c_define_gsubr ("surface-file", 1, 0, 0, get_surface_filename);
   scm_c_define_gsubr ("surface-w", 1, 0, 0, get_surface_width);
   scm_c_define_gsubr ("surface-h", 1, 0, 0, get_surface_height);
   scm_c_define_gsubr ("surface-pixels", 1, 0, 0, get_surface_pixels);
@@ -440,6 +471,7 @@ SDL_register_functions (void* data)
   scm_c_define_gsubr ("SDL_Init", 1, 0, 0, gacela_SDL_Init);
   scm_c_define_gsubr ("SDL_Quit", 0, 0, 0, gacela_SDL_Quit);
   scm_c_define_gsubr ("SDL_SetVideoMode", 4, 0, 0, gacela_SDL_SetVideoMode);
+  scm_c_define_gsubr ("SDL_FreeSurface", 1, 0, 0, gacela_SDL_FreeSurface);
   scm_c_define_gsubr ("SDL_WM_SetCaption", 2, 0, 0, gacela_SDL_WM_SetCaption);
   scm_c_define_gsubr ("SDL_Flip", 1, 0, 0, gacela_SDL_Flip);
   scm_c_define_gsubr ("SDL_Delay", 1, 0, 0, gacela_SDL_Delay);
@@ -454,6 +486,7 @@ SDL_register_functions (void* data)
   scm_c_define_gsubr ("SDL_PollEvent", 0, 0, 0, gacela_SDL_PollEvent);
   scm_c_define_gsubr ("SDL_GL_SwapBuffers", 0, 0, 0, gacela_SDL_GL_SwapBuffers);
   scm_c_define_gsubr ("SDL_EnableKeyRepeat", 2, 0, 0, gacela_SDL_EnableKeyRepeat);
+  scm_c_define_gsubr ("zoomSurface", 4, 0, 0, gacela_zoomSurface);
   scm_c_define_gsubr ("Mix_OpenAudio", 4, 0, 0, gacela_Mix_OpenAudio);
   scm_c_define_gsubr ("Mix_LoadMUS", 1, 0, 0, gacela_Mix_LoadMUS);
   scm_c_define_gsubr ("Mix_LoadWAV", 1, 0, 0, gacela_Mix_LoadWAV);