int preloadSymbol(symbolSetObj *symbolset, symbolObj *symbol, rendererVTableObj *renderer) {
switch(symbol->type) {
case MS_SYMBOL_VECTOR:
case MS_SYMBOL_ELLIPSE:
case MS_SYMBOL_SIMPLE:
case (MS_SYMBOL_TRUETYPE):
break;
case (MS_SYMBOL_SVG):
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
return msPreloadSVGSymbol(symbol);
#else
msSetError(MS_SYMERR, "SVG symbol support is not enabled.", "preloadSymbol()");
return MS_FAILURE;
#endif
break;
case (MS_SYMBOL_PIXMAP): {
if(!symbol->pixmap_buffer) {
if(MS_SUCCESS != msPreloadImageSymbol(renderer,symbol))
return MS_FAILURE;
}
}
break;
default:
msSetError(MS_MISCERR,"unsupported symbol type %d", "preloadSymbol()", symbol->type);
return MS_FAILURE;
}
return MS_SUCCESS;
}
imageObj *getTile(imageObj *img, symbolObj *symbol, symbolStyleObj *s, int width, int height,
int seamlessmode)
{
tileCacheObj *tile;
int status = MS_SUCCESS;
rendererVTableObj *renderer = img->format->vtable;
if(width==-1 || height == -1) {
width=height=MS_MAX(symbol->sizex,symbol->sizey);
}
tile = searchTileCache(img,symbol,s,width,height);
if(tile==NULL) {
imageObj *tileimg;
double p_x,p_y;
tileimg = msImageCreate(width,height,img->format,NULL,NULL,img->resolution, img->resolution, NULL);
if(UNLIKELY(!tileimg)) {
return NULL;
}
if(!seamlessmode) {
p_x = width/2.0;
p_y = height/2.0;
switch(symbol->type) {
case (MS_SYMBOL_TRUETYPE):
{
unsigned int unicode;
glyph_element *glyphc;
face_element *face = msGetFontFace(symbol->font, &img->map->fontset);
if(UNLIKELY(!face)) { status = MS_FAILURE; break; }
msUTF8ToUniChar(symbol->character, &unicode);
unicode = msGetGlyphIndex(face,unicode);
glyphc = msGetGlyphByIndex(face, s->scale, unicode);
if(UNLIKELY(!face)) { status = MS_FAILURE; break; }
status = drawGlyphMarker(tileimg, face, glyphc, p_x, p_y, s->scale, s->rotation,
s->color, s->outlinecolor, s->outlinewidth);
}
break;
case (MS_SYMBOL_PIXMAP):
status = msPreloadImageSymbol(renderer,symbol);
if(UNLIKELY(status == MS_FAILURE)) { break; }
status = renderer->renderPixmapSymbol(tileimg, p_x, p_y, symbol, s);
break;
case (MS_SYMBOL_ELLIPSE):
status = renderer->renderEllipseSymbol(tileimg, p_x, p_y,symbol, s);
break;
case (MS_SYMBOL_VECTOR):
status = renderer->renderVectorSymbol(tileimg, p_x, p_y, symbol, s);
break;
case (MS_SYMBOL_SVG):
#if defined(USE_SVG_CAIRO) || defined(USE_RSVG)
status = msPreloadSVGSymbol(symbol);
if(LIKELY(status == MS_SUCCESS)) {
if (renderer->supports_svg) {
status = renderer->renderSVGSymbol(tileimg, p_x, p_y, symbol, s);
} else {
status = msRenderRasterizedSVGSymbol(tileimg,p_x,p_y,symbol, s);
}
}
#else
msSetError(MS_SYMERR, "SVG symbol support is not enabled.", "getTile()");
status = MS_FAILURE;
#endif
break;
default:
msSetError(MS_SYMERR, "Unknown symbol type %d", "getTile()", symbol->type);
status = MS_FAILURE;
break;
}
if(UNLIKELY(status == MS_FAILURE)) {
msFreeImage(tileimg);
return NULL;
}
} else {
/*
* in seamless mode, we render the the symbol 9 times on a 3x3 grid to account for
* antialiasing blending from one tile to the next. We finally keep the center tile
*/
imageObj *tile3img = msImageCreate(width*3,height*3,img->format,NULL,NULL,
img->resolution, img->resolution, NULL);
int i,j;
rasterBufferObj tmpraster;
for(i=1; i<=3; i++) {
p_x = (i+0.5)*width;
for(j=1; j<=3; j++) {
p_y = (j+0.5) * height;
switch(symbol->type) {
case (MS_SYMBOL_TRUETYPE):
{
unsigned int unicode;
glyph_element *glyphc;
face_element *face = msGetFontFace(symbol->font, &img->map->fontset);
if(UNLIKELY(!face)) { status = MS_FAILURE; break; }
msUTF8ToUniChar(symbol->character, &unicode);
unicode = msGetGlyphIndex(face,unicode);
glyphc = msGetGlyphByIndex(face, s->scale, unicode);
if(UNLIKELY(!glyphc)) { status = MS_FAILURE; break; }
status = drawGlyphMarker(tileimg, face, glyphc, p_x, p_y, s->scale, s->rotation,
s->color, s->outlinecolor, s->outlinewidth);
}
break;
case (MS_SYMBOL_PIXMAP):
status = msPreloadImageSymbol(renderer,symbol);
if(UNLIKELY(status == MS_FAILURE)) { break; }
status = renderer->renderPixmapSymbol(tile3img, p_x, p_y, symbol, s);
break;
case (MS_SYMBOL_ELLIPSE):
status = renderer->renderEllipseSymbol(tile3img, p_x, p_y,symbol, s);
break;
case (MS_SYMBOL_VECTOR):
status = renderer->renderVectorSymbol(tile3img, p_x, p_y, symbol, s);
break;
default:
msSetError(MS_SYMERR, "BUG: Seamless mode is only for vector symbols", "getTile()");
return NULL;
}
if(UNLIKELY(status == MS_FAILURE)) {
msFreeImage(tile3img);
return NULL;
}
}
}
if(UNLIKELY(status == MS_FAILURE)) {
msFreeImage(tile3img);
return NULL;
}
status = MS_IMAGE_RENDERER(tile3img)->getRasterBufferHandle(tile3img,&tmpraster);
if(UNLIKELY(status == MS_FAILURE)) {
msFreeImage(tile3img);
return NULL;
}
status = renderer->mergeRasterBuffer(tileimg,
&tmpraster,
1.0,width,height,0,0,width,height
);
msFreeImage(tile3img);
}
if(UNLIKELY(status == MS_FAILURE)) {
msFreeImage(tileimg);
return NULL;
}
tile = addTileCache(img,tileimg,symbol,s,width,height);
}
return tile->image;
}
/*
** Returns the size, in pixels, of a marker symbol defined by a specific style and scalefactor. Used for annotation
** layer collision avoidance. A marker is made up of a number of styles so the calling code must either do the looping
** itself or call this function for the bottom style which should be the largest.
*/
int msGetMarkerSize(symbolSetObj *symbolset, styleObj *style, double *width, double *height, double scalefactor)
{
rectObj rect;
int size;
symbolObj *symbol;
*width = *height = 0; /* set a starting value */
if(style->symbol > symbolset->numsymbols || style->symbol < 0) return(MS_FAILURE); /* no such symbol, 0 is OK */
if(style->symbol == 0) { /* single point */
*width = 1;
*height = 1;
return(MS_SUCCESS);
}
symbol = symbolset->symbol[style->symbol];
if (symbol->type == MS_SYMBOL_PIXMAP && !symbol->pixmap_buffer) {
if (MS_SUCCESS != msPreloadImageSymbol(MS_MAP_RENDERER(symbolset->map), symbol))
return MS_FAILURE;
}
if(symbol->type == MS_SYMBOL_SVG && !symbol->renderer_cache) {
#ifdef USE_SVG_CAIRO
if(MS_SUCCESS != msPreloadSVGSymbol(symbol))
return MS_FAILURE;
#else
msSetError(MS_SYMERR, "SVG symbol support is not enabled.", "msGetMarkerSize()");
return MS_FAILURE;
#endif
}
if(style->size == -1) {
size = ( msSymbolGetDefaultSize(symbol) * scalefactor );
} else
size = (style->size*scalefactor);
size = MS_MAX(size, style->minsize);
size = MS_MIN(size, style->maxsize);
switch(symbol->type) {
case(MS_SYMBOL_TRUETYPE):
if(msGetTruetypeTextBBox(MS_MAP_RENDERER(symbolset->map),symbol->font,symbolset->fontset,size,symbol->character,&rect,NULL,0) != MS_SUCCESS)
return(MS_FAILURE);
*width = MS_MAX(*width, rect.maxx - rect.minx);
*height = MS_MAX(*height, rect.maxy - rect.miny);
break;
case(MS_SYMBOL_PIXMAP):
if(size == 1) {
*width = MS_MAX(*width, symbol->pixmap_buffer->width);
*height = MS_MAX(*height, symbol->pixmap_buffer->height);
} else {
*width = MS_MAX(*width, (((double)size/(double)symbol->pixmap_buffer->height) * symbol->pixmap_buffer->width));
*height = MS_MAX(*height, size);
}
break;
default: /* vector and ellipses, scalable */
if(style->size > 0) {
*width = MS_MAX(*width, ((size/symbol->sizey) * symbol->sizex));
*height = MS_MAX(*height, size);
} else { /* use symbol defaults */
*width = MS_MAX(*width, symbol->sizex);
*height = MS_MAX(*height, symbol->sizey);
}
break;
}
return(MS_SUCCESS);
}
