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
}
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
}
