int msFreeSymbol(symbolObj *s)
{
if(!s) return MS_FAILURE;
if( MS_REFCNT_DECR_IS_NOT_ZERO(s) ) {
return MS_FAILURE;
}
if(s->name) free(s->name);
if(s->renderer!=NULL) {
s->renderer->freeSymbol(s);
}
if(s->pixmap_buffer) {
msFreeRasterBuffer(s->pixmap_buffer);
free(s->pixmap_buffer);
}
if(s->font) free(s->font);
msFree(s->full_font_path);
msFree(s->full_pixmap_path);
if(s->imagepath) free(s->imagepath);
if(s->character) free(s->character);
if (s->svg_text)
msFree(s->svg_text);
return MS_SUCCESS;
}
void freeImageCache(struct imageCacheObj *ic)
{
if(ic) {
freeImageCache(ic->next); /* free any children */
msFreeRasterBuffer(&(ic->img));
free(ic);
}
return;
}
void freeSVGCache(symbolObj *s) {
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache *cache = s->renderer_cache;
assert(cache->svgc);
#ifdef USE_SVG_CAIRO
svg_cairo_destroy(cache->svgc);
#else
rsvg_handle_close(cache->svgc, NULL);
#if LIBRSVG_CHECK_VERSION(2,35,0)
g_object_unref(cache->svgc);
#else
rsvg_handle_free(cache->svgc);
#endif
#endif
if(cache->pixmap_buffer) {
msFreeRasterBuffer(cache->pixmap_buffer);
free(cache->pixmap_buffer);
}
msFree(s->renderer_cache);
#endif
}
int msPreloadImageSymbol(rendererVTableObj *renderer, symbolObj *symbol)
{
if(symbol->pixmap_buffer && symbol->renderer == renderer)
return MS_SUCCESS;
if(symbol->pixmap_buffer) { /* other renderer was used, start again */
msFreeRasterBuffer(symbol->pixmap_buffer);
} else {
symbol->pixmap_buffer = (rasterBufferObj*)calloc(1,sizeof(rasterBufferObj));
}
if(MS_SUCCESS != renderer->loadImageFromFile(symbol->full_pixmap_path, symbol->pixmap_buffer)) {
/* Free pixmap_buffer already allocated */
free(symbol->pixmap_buffer);
symbol->pixmap_buffer = NULL;
return MS_FAILURE;
}
symbol->renderer = renderer;
symbol->sizex = symbol->pixmap_buffer->width;
symbol->sizey = symbol->pixmap_buffer->height;
return MS_SUCCESS;
}
int msRenderRasterizedSVGSymbol(imageObj *img, double x, double y, symbolObj *symbol, symbolStyleObj *style)
{
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
struct svg_symbol_cache *svg_cache;
symbolStyleObj pixstyle;
symbolObj pixsymbol;
int status;
if(MS_SUCCESS != msPreloadSVGSymbol(symbol))
return MS_FAILURE;
svg_cache = (struct svg_symbol_cache*) symbol->renderer_cache;
//already rendered at the right size and scale? return
if(svg_cache->scale != style->scale || svg_cache->rotation != style->rotation) {
cairo_t *cr;
cairo_surface_t *surface;
unsigned char *pb;
int width, height, surface_w, surface_h;
/* need to recompute the pixmap */
if(svg_cache->pixmap_buffer) {
msFreeRasterBuffer(svg_cache->pixmap_buffer);
} else {
svg_cache->pixmap_buffer = msSmallCalloc(1,sizeof(rasterBufferObj));
}
//increase pixmap size to accomodate scaling/rotation
if (style->scale != 1.0) {
width = surface_w = (symbol->sizex * style->scale + 0.5);
height = surface_h = (symbol->sizey * style->scale + 0.5);
} else {
width = surface_w = symbol->sizex;
height = surface_h = symbol->sizey;
}
if (style->rotation != 0) {
surface_w = surface_h = MS_NINT(MS_MAX(height, width) * 1.415);
}
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, surface_w, surface_h);
cr = cairo_create(surface);
if (style->rotation != 0) {
cairo_translate(cr, surface_w / 2, surface_h / 2);
cairo_rotate(cr, -style->rotation);
cairo_translate(cr, -width / 2, -height / 2);
}
if (style->scale != 1.0) {
cairo_scale(cr, style->scale, style->scale);
}
#ifdef USE_SVG_CAIRO
if(svg_cairo_render(svg_cache->svgc, cr) != SVG_CAIRO_STATUS_SUCCESS) {
return MS_FAILURE;
}
#else
rsvg_handle_render_cairo(svg_cache->svgc, cr);
#endif
pb = cairo_image_surface_get_data(surface);
//set up raster
initializeRasterBufferCairo(svg_cache->pixmap_buffer, surface_w, surface_h, 0);
memcpy(svg_cache->pixmap_buffer->data.rgba.pixels, pb, surface_w * surface_h * 4 * sizeof (unsigned char));
svg_cache->scale = style->scale;
svg_cache->rotation = style->rotation;
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
assert(svg_cache->pixmap_buffer->height && svg_cache->pixmap_buffer->width);
pixstyle = *style;
pixstyle.rotation = 0.0;
pixstyle.scale = 1.0;
pixsymbol.pixmap_buffer = svg_cache->pixmap_buffer;
pixsymbol.type = MS_SYMBOL_PIXMAP;
status = MS_IMAGE_RENDERER(img)->renderPixmapSymbol(img,x,y,&pixsymbol,&pixstyle);
MS_IMAGE_RENDERER(img)->freeSymbol(&pixsymbol);
return status;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but MapServer is not built with libsvgcairo",
"renderSVGSymbolCairo()");
return MS_FAILURE;
#endif
}
int msRenderSVGToPixmap(symbolObj *symbol, symbolStyleObj *style) {
#ifdef USE_SVG_CAIRO
unsigned int svg_width, svg_height;
svg_cairo_status_t status;
cairo_t *cr;
svg_cairo_t *svgc;
cairo_surface_t *surface;
unsigned char *pb;
rasterBufferObj *rb;
//rendering_buffer *rc;
int width, height, surface_w, surface_h,row;
double scale;
//already rendered at the right size and scale? return
if (symbol->pixmap_buffer) {
if (style->scale == symbol->pixmap_buffer->scale &&
style->rotation == symbol->pixmap_buffer->rotation) {
return MS_SUCCESS;
} else {
if(symbol->renderer!=NULL)
symbol->renderer->freeSymbol(symbol);
msFreeRasterBuffer(symbol->pixmap_buffer);
}
}
if (!symbol->svg_cairo_surface )
msPreloadSVGSymbol(symbol);
if (!symbol->svg_cairo_surface)
return MS_FAILURE;
//set up raster
svgc =symbol->svg_cairo_surface;
svg_cairo_get_size (svgc, &svg_width, &svg_height);
width = surface_w = svg_width;
height = surface_h = svg_height;
//scale such that the SVG is rendered at the desired size in pixels
scale = style->scale; /*MS_MIN(style->scale / (double) svg_width,
style->scale / (double) svg_height);*/
//increase pixmap size to accomodate scaling/rotation
if (scale != 1.0 && style->scale != 1.0) {
width = surface_w = (svg_width * scale + 0.5);
height = surface_h = (svg_height * scale + 0.5);
}
if (style->rotation != 0) {
surface_w = MS_NINT(width * 1.415);
surface_h = MS_NINT(height * 1.415);
}
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, surface_w, surface_h);
cr = cairo_create(surface);
if (style->rotation != 0) {
cairo_translate (cr, surface_w/2, surface_h/2);
cairo_rotate(cr, -style->rotation);
cairo_translate (cr, -width/2, -height/2);
}
if (style->scale != 1.0) {
cairo_scale(cr,scale,scale);
}
status = svg_cairo_render(svgc, cr);
pb = cairo_image_surface_get_data(surface);
//set up raster
symbol->pixmap_buffer = (rasterBufferObj*)calloc(1,sizeof(rasterBufferObj));
MS_CHECK_ALLOC(symbol->pixmap_buffer, sizeof(rasterBufferObj), MS_FAILURE);
initializeRasterBufferCairo(symbol->pixmap_buffer, surface_w, surface_h, 0);
rb = symbol->pixmap_buffer;
memcpy(rb->data.rgba.pixels, pb, surface_w * surface_h * 4 * sizeof(unsigned char));
/* unpremultiply the data */
for(row=0; row<rb->height; row++) {
int col;
unsigned char *a,*r,*g,*b;
r=rb->data.rgba.r+row*rb->data.rgba.row_step;
g=rb->data.rgba.g+row*rb->data.rgba.row_step;
b=rb->data.rgba.b+row*rb->data.rgba.row_step;
a=rb->data.rgba.a+row*rb->data.rgba.row_step;
for(col=0; col<rb->width; col++) {
if(*a && *a < 255) {
double da = *a/255.0;
*r/=da;
*g/=da;
*b/=da;
}
a+=rb->data.rgba.pixel_step;
r+=rb->data.rgba.pixel_step;
g+=rb->data.rgba.pixel_step;
b+=rb->data.rgba.pixel_step;
}
}
rb->scale = style->scale;
rb->rotation = style->rotation;
cairo_destroy(cr);
cairo_surface_destroy(surface);
return MS_SUCCESS;
#else
msSetError(MS_MISCERR, "SVG Symbols requested but MapServer is not built with libsvgcairo",
"renderSVGSymbolCairo()");
return MS_FAILURE;
#endif
}
