static bool build_map_preview(std::ostringstream& ostream)
{
SDL_Rect r = {0, 0, RENDER_WIDTH, RENDER_HEIGHT};
SDL_Surface *surface = SDL_CreateRGBSurface(SDL_SWSURFACE, r.w, r.h, 32, 0xff0000, 0x00ff00, 0x0000ff, 0);
if (!surface)
return false;
SDL_FillRect(surface, &r, SDL_MapRGB(surface->format, 0, 0, 0));
struct overhead_map_data overhead_data;
overhead_data.half_width = r.w >> 1;
overhead_data.half_height = r.h >> 1;
overhead_data.width = r.w;
overhead_data.height = r.h;
overhead_data.top = overhead_data.left = 0;
overhead_data.scale = RENDER_SCALE;
overhead_data.mode = _rendering_saved_game_preview;
overhead_data.origin.x = local_player->location.x;
overhead_data.origin.y = local_player->location.y;
bool old_OGL_MapActive = OGL_MapActive;
_set_port_to_custom(surface);
OGL_MapActive = false;
_render_overhead_map(&overhead_data);
OGL_MapActive = old_OGL_MapActive;
_restore_port();
SDL_RWops *rwops = SDL_RWFromOStream(ostream);
#if defined(HAVE_PNG) && defined(HAVE_SDL_IMAGE_H)
int ret = IMG_SavePNG_RW(rwops, surface, IMG_COMPRESS_DEFAULT, NULL, 0);
#else
int ret = SDL_SaveBMP_RW(surface, rwops, false);
#endif
SDL_FreeSurface(surface);
SDL_RWclose(rwops);
return (ret == 0);
}
/* ------------ Local code */
static void add_overhead_thumbnail(
FileSpecifier &File)
{
PicHandle picture;
PicHandle preview;
RgnHandle clip_region;
FontInfo info;
short text_x, text_y;
short text_length;
Str255 temporary;
GWorldPtr old_gworld;
GDHandle old_device;
struct overhead_map_data overhead_data;
Rect bounds;
AEDesc aeFileSpec;
FSSpec *SpecPtr;
// Skip all this if there's no nav services to install the preview
if(!machine_has_nav_services() || NavLibraryVersion() < kNavServicesVersion_2_0)
return;
GetGWorld(&old_gworld, &old_device);
SetGWorld(world_pixels, (GDHandle) NULL);
// Note well. We're using world_pixels to create our thumbnail pict within.
// If world_pixels is runing as a postage stamp (low-res + small display space)
// Then it is actually smaller than the size we're looking to build a thumbnail
// within. But seeing as we're generating pict images and using drawing commands
// instead of bit-wise operations. It all works out.
/* Create the bounding rectangle */
SetRect(&bounds, 0, 0, THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT);
/* Start recording.. */
picture= OpenPicture(&bounds);
PaintRect(&bounds);
overhead_data.scale= OVERHEAD_MAP_MINIMUM_SCALE;
overhead_data.origin.x= local_player->location.x;
overhead_data.origin.y= local_player->location.y;
overhead_data.half_width= RECTANGLE_WIDTH(&bounds)/2;
overhead_data.half_height= RECTANGLE_HEIGHT(&bounds)/2;
overhead_data.width= RECTANGLE_WIDTH(&bounds);
overhead_data.height= RECTANGLE_HEIGHT(&bounds);
overhead_data.mode= _rendering_saved_game_preview;
_render_overhead_map(&overhead_data);
RGBForeColor(&rgb_black);
PenSize(1, 1);
TextFont(0);
TextFace(normal);
TextSize(0);
ClosePicture();
// JTP: Add Nav Services style preview
SetRect(&bounds, 0, 0, PREVIEW_WIDTH, PREVIEW_HEIGHT);
preview= OpenPicture(&bounds);
SetRect(&bounds, PREVIEW_IMAGE_X, PREVIEW_IMAGE_Y,
THUMBNAIL_WIDTH + PREVIEW_IMAGE_X, THUMBNAIL_HEIGHT + PREVIEW_IMAGE_Y);
clip_region= NewRgn();
GetClip(clip_region);
ClipRect(&bounds);
DrawPicture(picture, &bounds);
SetClip(clip_region);
/* Center the text in the rectangle */
// LP: Classic doesn't have this function
#ifdef TARGET_API_MAC_CARBON
CopyCStringToPascal(static_world->level_name, temporary);
#else
strncpy((char *)temporary,static_world->level_name,LEVEL_NAME_LENGTH);
c2pstr((char *)temporary);
#endif
// LP: fix to allow lengths more than 127 bytes (not really necessary, but...)
text_length = *ptemporary;
TruncText(PREVIEW_WIDTH, (char *)temporary+1, &text_length, smTruncEnd);
*ptemporary = text_length;
GetFontInfo(&info);
text_y= PREVIEW_HEIGHT - info.descent;
text_x= PREVIEW_LABEL_X + (PREVIEW_WIDTH-StringWidth(temporary))/2;
MoveTo(text_x, text_y);
DrawString(temporary);
ClosePicture();
// This requires NavServices 2.0, what's the inline check?
// From FSS get a AEDesc
OSStatus err;
SpecPtr = &File.GetSpec();
err = AECreateDesc(typeFSS, SpecPtr, sizeof(FSSpec), &aeFileSpec);
HLock((Handle)preview);
err = NavCreatePreview(&aeFileSpec, 'PICT', *preview, GetHandleSize((Handle)preview));
HUnlock((Handle)preview);
AEDisposeDesc(&aeFileSpec);
KillPicture(preview);
KillPicture(picture);
DisposeRgn(clip_region);
SetGWorld(old_gworld, old_device);
}
