/* Convert a SDL_Surface to an AG_Surface. */
AG_Surface *
AG_SDL_ImportSurface(SDL_Surface *ss)
{
AG_PixelFormat *pf;
AG_Surface *ds;
Uint8 *pSrc, *pDst;
int y;
#if 0
Uint32 px;
AG_Color C;
int x;
#endif
if ((pf = AG_SDL_GetPixelFormat(ss)) == NULL) {
return (NULL);
}
if (pf->palette != NULL) {
AG_SetError("Indexed formats not supported");
AG_PixelFormatFree(pf);
return (NULL);
}
if ((ds = AG_SurfaceNew(AG_SURFACE_PACKED, ss->w, ss->h, pf, 0))
== NULL) {
goto out;
}
if (ss->flags & SDL_SRCCOLORKEY) { ds->flags |= AG_SRCCOLORKEY; }
if (ss->flags & SDL_SRCALPHA) { ds->flags |= AG_SRCALPHA; }
if (SDL_MUSTLOCK(ss)) {
SDL_LockSurface(ss);
}
pSrc = (Uint8 *)ss->pixels;
pDst = (Uint8 *)ds->pixels;
for (y = 0; y < ss->h; y++) {
memcpy(pDst, pSrc, ss->pitch);
pSrc += ss->pitch;
pDst += ds->pitch;
}
#if 0
for (y = 0; y < ss->h; y++) {
for (x = 0; x < ss->w; x++) {
AG_PACKEDPIXEL_GET(ss->format->BytesPerPixel, px, pSrc);
C = AG_SDL_GetColorRGBA(px, ss->format);
AG_PUT_PIXEL(ds,pDst,
AG_MapColorRGBA(ds->format, C));
pSrc += ss->format->BytesPerPixel;
pDst += ds->format->BytesPerPixel;
}
}
#endif
if (SDL_MUSTLOCK(ss))
SDL_UnlockSurface(ss);
out:
AG_PixelFormatFree(pf);
return (ds);
}
/* Callback routine for AG_FileDlg. */
static int
LoadImage(AG_Event *event)
{
/* AG_FileDlg *fd = AG_SELF(); */
AG_Window *winParent = AG_PTR(1);
char *file = AG_STRING(2);
AG_FileType *ft = AG_PTR(3);
AG_Surface *s;
AG_Window *win;
AG_Scrollview *sv;
Uint8 *pSrc;
Uint i;
if (strcmp(ft->exts[0], "*.bmp") == 0) {
s = AG_SurfaceFromBMP(file);
} else if (strcmp(ft->exts[0], "*.jpg") == 0) {
s = AG_SurfaceFromJPEG(file);
} else if (strcmp(ft->exts[0], "*.png") == 0) {
s = AG_SurfaceFromPNG(file);
} else {
AG_SetError("Unrecognized format: %s", ft->exts[0]);
return (-1);
}
if (s == NULL)
return (-1);
if ((win = AG_WindowNew(0)) == NULL) {
AG_SurfaceFree(s);
return (-1);
}
AG_WindowSetCaption(win, "Image <%s>", AG_ShortFilename(file));
/* We use AG_FileOptionFoo() to retrieve per-type options. */
if (AG_FileOptionBool(ft,"invert")) {
pSrc = (Uint8 *)s->pixels;
for (i = 0; i < s->w*s->h; i++) {
Uint8 r, g, b;
AG_GetPixelRGB(AG_GET_PIXEL(s,pSrc), s->format,
&r,&g,&b);
r = 255 - r;
g = 255 - g;
b = 255 - b;
AG_PUT_PIXEL(s, pSrc,
AG_MapPixelRGB(s->format, r,g,b));
pSrc += s->format->BytesPerPixel;
}
}
/*
* Place an AG_Pixmap(3) widget inside of an AG_Scrollview(3) so
* the user can pan the view.
*/
sv = AG_ScrollviewNew(win, AG_SCROLLVIEW_BY_MOUSE|AG_SCROLLVIEW_EXPAND);
AG_PixmapFromSurfaceScaled(sv, 0, s, s->w, s->h);
AG_SurfaceFree(s);
AG_WindowSetGeometry(win, -1, -1, 320, 240);
AG_WindowAttach(winParent, win);
AG_WindowShow(win);
return (0);
}
