int msPreloadSVGSymbol(symbolObj *symbol)
{
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache *cache;
if(!symbol->renderer_cache) {
cache = msSmallCalloc(1,sizeof(struct svg_symbol_cache));
symbol->renderer_free_func = &freeSVGCache;
} else {
cache = symbol->renderer_cache;
}
if(cache->svgc)
return MS_SUCCESS;
#ifdef USE_SVG_CAIRO
{
unsigned int svg_width, svg_height;
int status;
status = svg_cairo_create(&cache->svgc);
if (status) {
msSetError(MS_RENDERERERR, "problem creating cairo svg", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
status = svg_cairo_parse(cache->svgc, symbol->full_pixmap_path);
if (status) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
svg_cairo_get_size (cache->svgc, &svg_width, &svg_height);
if (svg_width == 0 || svg_height == 0) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
symbol->sizex = svg_width;
symbol->sizey = svg_height;
}
#else
{
RsvgDimensionData dim;
cache->svgc = rsvg_handle_new_from_file(symbol->full_pixmap_path,NULL);
if(!cache->svgc) {
msSetError(MS_RENDERERERR,"failed to load svg file %s", "msPreloadSVGSymbol()", symbol->full_pixmap_path);
}
rsvg_handle_get_dimensions_sub (cache->svgc, &dim, NULL);
symbol->sizex = dim.width;
symbol->sizey = dim.height;
}
#endif
symbol->renderer_cache = cache;
return MS_SUCCESS;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but is not built with libsvgcairo",
"msPreloadSVGSymbol()");
return MS_FAILURE;
#endif
}
int renderSVGSymbolCairo(imageObj *img, double x, double y, symbolObj *symbol,
symbolStyleObj *style) {
#ifdef USE_SVG_CAIRO
cairo_renderer *r = CAIRO_RENDERER(img);
//double ox=symbol->sizex*0.5,oy=symbol->sizey*0.5;
unsigned int svg_width, svg_height;
svg_cairo_status_t status;
svg_cairo_t *svgc;
double scale;
//use cache for svg surface
if(!symbol->renderer_cache) {
status = svg_cairo_create(&svgc);
status = svg_cairo_parse_buffer(svgc, symbol->svg_text, strlen(symbol->svg_text));
if (status) {
msSetError(MS_RENDERERERR, "problem creating cairo svg", "renderSVGSymbolCairo()");
return MS_FAILURE;
}
symbol->renderer_cache = svgc;
}
assert(symbol->renderer_cache);
svgc=(svg_cairo_t *)symbol->renderer_cache;
svg_cairo_get_size (svgc, &svg_width, &svg_height);
//scale such that the SVG is rendered at the desired size in pixels
scale = style->scale;
/*
if (style->scale != 1) {
scale = MS_MIN(style->scale / (double) svg_width,
style->scale / (double) svg_height);
} else {
scale = style->scale;
}
*/
cairo_save(r->cr);
cairo_translate(r->cr,x,y);
cairo_scale(r->cr,scale,scale);
if (style->rotation != 0) {
cairo_rotate(r->cr, -style->rotation);
cairo_translate (r->cr, -(int)svg_width/2, -(int)svg_height/2);
}
else
cairo_translate (r->cr, -(int)svg_width/2, -(int)svg_height/2);
status = svg_cairo_render(svgc, r->cr);
cairo_restore(r->cr);
return MS_SUCCESS;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but is not built with libsvgcairo",
"renderSVGSymbolCairo()");
return MS_FAILURE;
#endif
}
int msPreloadSVGSymbol(symbolObj *symbol)
{
#ifdef USE_SVG_CAIRO
svg_cairo_t *svgc;
int status;
unsigned int svg_width, svg_height;
if(symbol->svg_cairo_surface)
return MS_SUCCESS;
if(!symbol->svg_text)
return MS_FAILURE;
status = svg_cairo_create(&svgc);
if (status) {
msSetError(MS_RENDERERERR, "problem creating cairo svg", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
status = svg_cairo_parse_buffer(svgc, symbol->svg_text, strlen(symbol->svg_text));
if (status) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
svg_cairo_get_size (svgc, &svg_width, &svg_height);
if (svg_width == 0 || svg_height == 0)
{
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
symbol->sizex = svg_width;
symbol->sizey = svg_height;
symbol->svg_cairo_surface = (void *)svgc;
return MS_SUCCESS;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but is not built with libsvgcairo",
"msPreloadSVGSymbol()");
return MS_FAILURE;
#endif
}
static svg_cairo_status_t
render_to_png (FILE *svg_file, FILE *png_file, double scale, int width, int height)
{
unsigned int svg_width, svg_height;
svg_cairo_status_t status;
cairo_t *cr;
svg_cairo_t *svgc;
cairo_surface_t *surface;
double dx = 0, dy = 0;
status = svg_cairo_create (&svgc);
if (status) {
fprintf (stderr, "Failed to create svg_cairo_t. Exiting.\n");
exit(1);
}
status = svg_cairo_parse_file (svgc, svg_file);
if (status)
return status;
svg_cairo_get_size (svgc, &svg_width, &svg_height);
if (width < 0 && height < 0) {
width = (svg_width * scale + 0.5);
height = (svg_height * scale + 0.5);
} else if (width < 0) {
scale = (double) height / (double) svg_height;
width = (svg_width * scale + 0.5);
} else if (height < 0) {
scale = (double) width / (double) svg_width;
height = (svg_height * scale + 0.5);
} else {
scale = MIN ((double) width / (double) svg_width, (double) height / (double) svg_height);
/* Center the resulting image */
dx = (width - (int) (svg_width * scale + 0.5)) / 2;
dy = (height - (int) (svg_height * scale + 0.5)) / 2;
}
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
cr = cairo_create (surface);
cairo_save (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_restore (cr);
cairo_translate (cr, dx, dy);
cairo_scale (cr, scale, scale);
/* XXX: This probably doesn't need to be here (eventually) */
cairo_set_source_rgb (cr, 1, 1, 1);
status = svg_cairo_render (svgc, cr);
status = write_surface_to_png_file (surface, png_file);
cairo_surface_destroy (surface);
cairo_destroy (cr);
if (status)
return status;
svg_cairo_destroy (svgc);
return status;
}
int msPreloadSVGSymbol(symbolObj *symbol)
{
#ifdef USE_SVG_CAIRO
int status;
unsigned int svg_width, svg_height;
struct svg_symbol_cache *cache;
if(!symbol->renderer_cache) {
cache = msSmallCalloc(1,sizeof(struct svg_symbol_cache));
} else {
cache = symbol->renderer_cache;
}
if(cache->svgc)
return MS_SUCCESS;
if (!symbol->svg_text) {
FILE *stream;
long int file_len;
if ((stream = fopen(symbol->full_pixmap_path, "rb")) == NULL) {
msSetError(MS_IOERR, "Could not open svg file %s", "msPreloadSVGSymbol()",symbol->full_pixmap_path);
return (MS_FAILURE);
}
fseek(stream, 0, SEEK_END);
file_len = ftell(stream);
rewind(stream);
symbol->svg_text = (char*) msSmallMalloc(sizeof (char) * file_len);
if (1 != fread(symbol->svg_text, file_len, 1, stream)) {
msSetError(MS_IOERR, "failed to read %d bytes from svg file %s", "loadSymbol()", file_len, symbol->full_pixmap_path);
free(symbol->svg_text);
return MS_FAILURE;
}
symbol->svg_text[file_len - 1] = '\0';
fclose(stream);
}
status = svg_cairo_create(&cache->svgc);
if (status) {
msSetError(MS_RENDERERERR, "problem creating cairo svg", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
status = svg_cairo_parse_buffer(cache->svgc, symbol->svg_text, strlen(symbol->svg_text));
if (status) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
svg_cairo_get_size (cache->svgc, &svg_width, &svg_height);
if (svg_width == 0 || svg_height == 0) {
msSetError(MS_RENDERERERR, "problem parsing svg symbol", "msPreloadSVGSymbol()");
return MS_FAILURE;
}
symbol->sizex = svg_width;
symbol->sizey = svg_height;
symbol->renderer_cache = cache;
return MS_SUCCESS;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but is not built with libsvgcairo",
"msPreloadSVGSymbol()");
return MS_FAILURE;
#endif
}
SDL_Surface *load_svg(frame_t *frame, const char *name, int alpha)
{
svg_cairo_t *svg;
unsigned int svg_width;
unsigned int svg_height;
int bpp = 32; /* bits per pixel */
int btpp = 4; /* bytes per pixel */
int stride;
int space;
char *image;
cairo_surface_t *cairo_surface;
cairo_t *cr;
Uint32 rmask = 0x00ff0000;
Uint32 gmask = 0x0000ff00;
Uint32 bmask = 0x000000ff;
Uint32 amask = 0xff000000;
SDL_Surface *sdl_surf_tmp;
SDL_Surface *sdl_surf;
svg_cairo_create(&svg);
svg_cairo_parse(svg, name);
svg_cairo_get_size(svg, &svg_width, &svg_height);
stride = svg_width * btpp; /* scanline width */
space = svg_height * stride;
image = malloc(space);
if (!image) {
fprintf(stderr, "ugh: malloc(%d)\n", space);
exit(1);
}
cairo_surface = cairo_image_surface_create_for_data(image,
CAIRO_FORMAT_ARGB32,
svg_width, svg_height,
stride);
cr = cairo_create(cairo_surface);
/* cairo_scale(cr, 1, 1); */
svg_cairo_render(svg, cr);
cairo_destroy(cr);
cairo_surface_destroy(cairo_surface);
svg_cairo_destroy(svg);
sdl_surf_tmp = SDL_CreateRGBSurfaceFrom(image, svg_width, svg_height,
bpp, stride,
rmask, gmask, bmask, amask);
sdl_surf = alpha ?
SDL_DisplayFormatAlpha(sdl_surf_tmp) :
SDL_DisplayFormat(sdl_surf_tmp);
if (!sdl_surf) {
fprintf(stderr, "ugh: unable to convert image: %s: %s\n",
name, SDL_GetError());
exit(1);
}
SDL_FreeSurface(sdl_surf_tmp);
frame->image_list[frame->image_list_size] = sdl_surf;
show_image_info(frame, sdl_surf, name, alpha);
++frame->image_list_size;
return sdl_surf;
}
