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index 90a6e32f2ca4aede9b6bb2d7aa716ed8489f7f02..d3a02852eed3b2f5ecbbf12d23bae703dd2bf2e2 100644 (file)
--- a/src/filter-chemistry.cpp
+++ b/src/filter-chemistry.cpp
#include "document-private.h"
#include "desktop-style.h"
+#include "sp-feblend.h"
#include "sp-filter.h"
#include "sp-gaussian-blur.h"
#include "svg/css-ostringstream.h"
}
}
+SPFilter *new_filter(SPDocument *document)
+{
+ g_return_val_if_fail(document != NULL, NULL);
+
+ SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
+
+ Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
+
+ // create a new filter
+ Inkscape::XML::Node *repr;
+ repr = xml_doc->createElement("svg:filter");
+
+ // Append the new filter node to defs
+ SP_OBJECT_REPR(defs)->appendChild(repr);
+ Inkscape::GC::release(repr);
+
+ // get corresponding object
+ SPFilter *f = SP_FILTER( document->getObjectByRepr(repr) );
+
+
+ g_assert(f != NULL);
+ g_assert(SP_IS_FILTER(f));
+
+ return f;
+}
+
+SPFilterPrimitive *
+filter_add_primitive(SPFilter *filter, const gchar *type)
+{
+ Inkscape::XML::Document *xml_doc = sp_document_repr_doc(filter->document);
+
+ //create filter primitive node
+ Inkscape::XML::Node *repr;
+ repr = xml_doc->createElement(type);
+ repr->setAttribute("inkscape:collect", "always");
+
+ //set primitive as child of filter node
+ filter->repr->appendChild(repr);
+ Inkscape::GC::release(repr);
+
+ // get corresponding object
+ SPFilterPrimitive *prim = SP_FILTER_PRIMITIVE( filter->document->getObjectByRepr(repr) );
+
+ g_assert(prim != NULL);
+ g_assert(SP_IS_FILTER_PRIMITIVE(prim));
+
+ return prim;
+}
+
/**
* Creates a filter with blur primitive of specified radius for an item with the given matrix expansion, width and height
*/
@@ -134,11 +184,92 @@ new_filter_gaussian_blur (SPDocument *document, gdouble radius, double expansion
return f;
}
+
+/**
+ * Creates a simple filter with a blend primitive and a blur primitive of specified radius for
+ * an item with the given matrix expansion, width and height
+ */
+SPFilter *
+new_filter_blend_gaussian_blur (SPDocument *document, const char *blendmode, gdouble radius, double expansion,
+ double expansionX, double expansionY, double width, double height)
+{
+ g_return_val_if_fail(document != NULL, NULL);
+
+ SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
+
+ Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
+
+ // create a new filter
+ Inkscape::XML::Node *repr;
+ repr = xml_doc->createElement("svg:filter");
+ repr->setAttribute("inkscape:collect", "always");
+
+ // Append the new filter node to defs
+ SP_OBJECT_REPR(defs)->appendChild(repr);
+ Inkscape::GC::release(repr);
+
+ // get corresponding object
+ SPFilter *f = SP_FILTER( document->getObjectByRepr(repr) );
+
+ // Gaussian blur primitive
+ if(radius != 0) {
+ set_filter_area(repr, radius, expansion, expansionX, expansionY, width, height);
+
+ //create feGaussianBlur node
+ Inkscape::XML::Node *b_repr;
+ b_repr = xml_doc->createElement("svg:feGaussianBlur");
+ b_repr->setAttribute("inkscape:collect", "always");
+
+ double stdDeviation = radius;
+ if (expansion != 0)
+ stdDeviation /= expansion;
+
+ //set stdDeviation attribute
+ sp_repr_set_svg_double(b_repr, "stdDeviation", stdDeviation);
+
+ //set feGaussianBlur as child of filter node
+ repr->appendChild(b_repr);
+ Inkscape::GC::release(b_repr);
+
+ SPGaussianBlur *b = SP_GAUSSIANBLUR( document->getObjectByRepr(b_repr) );
+ g_assert(b != NULL);
+ g_assert(SP_IS_GAUSSIANBLUR(b));
+ }
+ // Blend primitive
+ if(strcmp(blendmode, "normal")) {
+ Inkscape::XML::Node *b_repr;
+ b_repr = xml_doc->createElement("svg:feBlend");
+ b_repr->setAttribute("inkscape:collect", "always");
+ b_repr->setAttribute("mode", blendmode);
+ b_repr->setAttribute("in2", "BackgroundImage");
+
+ // set feBlend as child of filter node
+ repr->appendChild(b_repr);
+ Inkscape::GC::release(b_repr);
+
+ // Enable background image buffer for document
+ Inkscape::XML::Node *root = b_repr->root();
+ if (!root->attribute("enable-background")) {
+ root->setAttribute("enable-background", "new");
+ }
+
+ SPFeBlend *b = SP_FEBLEND(document->getObjectByRepr(b_repr));
+ g_assert(b != NULL);
+ g_assert(SP_IS_FEBLEND(b));
+ }
+
+ g_assert(f != NULL);
+ g_assert(SP_IS_FILTER(f));
+
+ return f;
+}
+
/**
- * Creates a filter with blur primitive of specified radius for the given item
+ * Creates a simple filter for the given item with blend and blur primitives, using the
+ * specified mode and radius, respectively
*/
SPFilter *
-new_filter_gaussian_blur_from_item (SPDocument *document, SPItem *item, gdouble radius)
+new_filter_simple_from_item (SPDocument *document, SPItem *item, const char *mode, gdouble radius)
{
NR::Maybe<NR::Rect> const r = sp_item_bbox_desktop(item);
NR::Matrix i2d = sp_item_i2d_affine (item);
- return (new_filter_gaussian_blur (document, radius, i2d.expansion(), i2d.expansionX(), i2d.expansionY(), width, height));
+ return (new_filter_blend_gaussian_blur (document, mode, radius, i2d.expansion(), i2d.expansionX(), i2d.expansionY(), width, height));
}
/**
gdouble radius)
{
if (!item->style || !item->style->filter.set) {
- return new_filter_gaussian_blur_from_item(document, item, radius);
+ //return new_filter_gaussian_blur_from_item(document, item, radius);
}
SPFilter *filter = SP_FILTER(item->style->filter.filter);
// If there are more users for this filter, duplicate it
if (SP_OBJECT_HREFCOUNT(filter) > count_filter_hrefs(item, filter)) {
Inkscape::XML::Node *repr;
- repr = SP_OBJECT_REPR(item)->duplicate(xml_doc);
+ repr = SP_OBJECT_REPR(item->style->filter.filter)->duplicate(xml_doc);
SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
SP_OBJECT_REPR(defs)->appendChild(repr);