lib/sdl: add access to texture pixels and alpha mask

[nit.git] / lib / sdl.nit

diff --git a/lib/sdl.nit b/lib/sdl.nit
index 5225f9f..168f123 100644 (file)
--- a/lib/sdl.nit
+++ b/lib/sdl.nit
@@ -21,6 +21,7 @@ module sdl is
 end
 
 import mnit_display
+import c
 
 in "C header" `{
        #include <unistd.h>
@@ -160,7 +161,26 @@ extern class SDLDisplay `{SDL_Surface *`}
        fun warp_mouse(x,y: Int) `{ SDL_WarpMouse(x, y); `}
 
        # Show or hide the cursor
-       fun show_cursor(show: Bool) `{ SDL_ShowCursor(show); `}
+       fun show_cursor=(val: Bool) `{ SDL_ShowCursor(val? SDL_ENABLE: SDL_DISABLE); `}
+
+       # Is the cursor visible?
+       fun show_cursor: Bool `{ SDL_ShowCursor(SDL_QUERY); `}
+
+       # Grab or release the input
+       fun grab_input=(val: Bool) `{ SDL_WM_GrabInput(val? SDL_GRAB_ON: SDL_GRAB_OFF); `}
+
+       # Is the input grabbed?
+       fun grab_input: Bool `{ SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON; `}
+
+       # Are instances of `SDLMouseMotionEvent` ignored?
+       fun ignore_mouse_motion_events: Bool `{
+               return SDL_EventState(SDL_MOUSEMOTION, SDL_QUERY);
+       `}
+
+       # Do not raise instances of `SDLMouseMotionEvent` if `val`
+       fun ignore_mouse_motion_events=(val: Bool) `{
+               SDL_EventState(SDL_MOUSEMOTION, val? SDL_IGNORE: SDL_ENABLE);
+       `}
 end
 
 # Basic Drawing figures
@@ -225,6 +245,12 @@ extern class SDLImage
        redef fun height: Int `{ return recv->h; `}
 
        fun is_ok: Bool do return not address_is_null
+
+       # Returns a reference to the pixels of the texture
+       fun pixels: NativeCByteArray `{ return recv->pixels; `}
+
+       # Does this texture has an alpha mask?
+       fun amask: Bool `{ return recv->format->Amask; `}
 end
 
 # A simple rectangle