diff --git a/src/surface.rs b/src/surface.rs index d356d1a5..9e273b90 100644 --- a/src/surface.rs +++ b/src/surface.rs @@ -1,3 +1,9 @@ +use std::cast; +use rect::Rect; +use get_error; +use std::ptr; +use std::libc::c_int; + pub mod ll { use pixels::ll::SDL_PixelFormat; use pixels::ll::SDL_Palette; @@ -64,13 +70,21 @@ pub mod ll { externfn!(fn SDL_LowerBlitScaled(src: *SDL_Surface, srcrect: *SDL_Rect, dst: *SDL_Surface, dstrect: *SDL_Rect) -> c_int) } +#[deriving(Eq)] +pub enum SurfaceFlag { + SWSurface = ll::SDL_SWSURFACE as int, + PreAlloc = ll::SDL_PREALLOC as int, + RLEAccel = ll::SDL_RLEACCEL as int, + DontFree = ll::SDL_DONTFREE as int +} + #[deriving(Eq)] pub struct Surface { raw: *ll::SDL_Surface, owned: bool } -impl Drop for Surface{ +impl Drop for Surface { fn drop(&self) { if self.owned { unsafe { @@ -79,3 +93,89 @@ impl Drop for Surface{ } } } + +impl Surface { + pub fn new(surface_flags: &[SurfaceFlag], width: int, height: int, bpp: int, + rmask: u32, gmask: u32, bmask: u32, amask: u32) -> Result<~Surface, ~str> { + let flags = surface_flags.iter().fold(0u32, |flags, flag| { flags | *flag as u32 }); + + unsafe { + let raw = ll::SDL_CreateRGBSurface(flags, width as c_int, height as c_int, bpp as c_int, + rmask, gmask, bmask, amask); + + if raw == ptr::null() { + Err(get_error()) + } else { + Ok(~Surface { raw: raw, owned: true }) + } + } + } + + //TODO: From Data + pub fn get_width(&self) -> u16 { + unsafe { (*self.raw).w as u16 } + } + + pub fn get_height(&self) -> u16 { + unsafe { (*self.raw).h as u16 } + } + + pub fn get_size(&self) -> (u16, u16) { + (self.get_width(), self.get_height()) + } + + pub fn get_rect(&self) -> Rect { + Rect { + x: 0, + y: 0, + w: self.get_width() as i32, + h: self.get_height() as i32 + } + } + //externfn!(fn SDL_SetSurfacePalette(surface: *SDL_Surface, palette: *SDL_Palette) -> c_int) + + + pub fn lock(&self) -> bool { + unsafe { ll::SDL_LockSurface(self.raw) == 0 } + } + + /// Locks a surface so that the pixels can be directly accessed safely. + pub fn with_lock(&self, f: &fn(pixels: &mut [u8]) -> R) -> R { + unsafe { + if ll::SDL_LockSurface(self.raw) != 0 { fail!(~"could not lock surface"); } + let len = (*self.raw).pitch as uint * ((*self.raw).h as uint); + let pixels: &mut [u8] = cast::transmute(((*self.raw).pixels, len)); + let rv = f(pixels); + ll::SDL_UnlockSurface(self.raw); + rv + } + } + + pub fn unlock(&self) { + unsafe { ll::SDL_UnlockSurface(self.raw); } + } + + /*externfn!(fn SDL_LoadBMP_RW(src: *SDL_RWops, freesrc: c_int) -> *SDL_Surface) + externfn!(fn SDL_SaveBMP_RW(surface: *SDL_Surface, dst: *SDL_RWops, freedst: c_int) -> c_int) + externfn!(fn SDL_SetSurfaceRLE(surface: *SDL_Surface, flag: c_int) -> c_int) + externfn!(fn SDL_SetColorKey(surface: *SDL_Surface, flag: c_int, key: uint32_t) -> c_int) + externfn!(fn SDL_GetColorKey(surface: *SDL_Surface, key: *uint32_t) -> c_int) + externfn!(fn SDL_SetSurfaceColorMod(surface: *SDL_Surface, r: uint8_t, g: uint8_t, b: uint8_t) -> c_int) + externfn!(fn SDL_GetSurfaceColorMod(surface: *SDL_Surface, r: *uint8_t, g: *uint8_t, b: *uint8_t ) -> c_int) + externfn!(fn SDL_SetSurfaceAlphaMod(surface: *SDL_Surface, alpha: uint8_t) -> c_int) + externfn!(fn SDL_GetSurfaceAlphaMod(surface: *SDL_Surface, alpha: *uint8_t ) -> c_int) + externfn!(fn SDL_SetSurfaceBlendMode(surface: *SDL_Surface, blendMode: SDL_BlendMode) -> c_int) + externfn!(fn SDL_GetSurfaceBlendMode(surface: *SDL_Surface, blendMode: *SDL_BlendMode) -> c_int) + externfn!(fn SDL_SetClipRect(surface: *SDL_Surface, rect: *SDL_Rect) -> SDL_bool) + externfn!(fn SDL_GetClipRect(surface: *SDL_Surface, rect: *SDL_Rect)) + externfn!(fn SDL_ConvertSurface(src: *SDL_Surface, fmt: *SDL_PixelFormat, flags: uint32_t) -> *SDL_Surface) + externfn!(fn SDL_ConvertSurfaceFormat(src: *SDL_Surface, pixel_format: uint32_t, flags: uint32_t) -> *SDL_Surface) + externfn!(fn SDL_ConvertPixels(width: c_int, height: c_int, src_format: uint32_t, src: *c_void, src_pitch: c_int, dst_format: uint32_t, dst: *c_void, dst_pitch: c_int) -> c_int) + externfn!(fn SDL_FillRect(dst: *SDL_Surface, rect: *SDL_Rect, color: uint32_t) -> c_int) + externfn!(fn SDL_FillRects(dst: *SDL_Surface, rects: *SDL_Rect, count: c_int, color: uint32_t) -> c_int) + externfn!(fn SDL_UpperBlit(src: *SDL_Surface, srcrect: *SDL_Rect, dst: *SDL_Surface, dstrect: *SDL_Rect) -> c_int) + externfn!(fn SDL_LowerBlit(src: *SDL_Surface, srcrect: *SDL_Rect, dst: *SDL_Surface, dstrect: *SDL_Rect) -> c_int) + externfn!(fn SDL_SoftStretch(src: *SDL_Surface, srcrect: *SDL_Rect, dst: *SDL_Surface, dstrect: *SDL_Rect) -> c_int) + externfn!(fn SDL_UpperBlitScaled(src: *SDL_Surface, srcrect: *SDL_Rect, dst: *SDL_Surface, dstrect: *SDL_Rect) -> c_int) + externfn!(fn SDL_LowerBlitScaled(src: *SDL_Surface, srcrect: *SDL_Rect, dst: *SDL_Surface, dstrect: *SDL_Rect) -> c_int)*/ +}