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index fb4064a7e50e6568800ab8cf1ccf845a7b1856f0..d6900b1f675ae8f28cffe0b598d8b0a42598cbcc 100644 (file)
--- a/src/filter-chemistry.cpp
+++ b/src/filter-chemistry.cpp
-#define __SP_FILTER_CHEMISTRY_C__
-
/*
* Various utility methods for filters
*
* Hugo Rodrigues
* bulia byak
* Niko Kiirala
+ * Jon A. Cruz <jon@joncruz.org>
+ * Abhishek Sharma
*
- * Copyright (C) 2006,2007 authors
+ * Copyright (C) 2006-2008 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "document-private.h"
#include "desktop-style.h"
+#include "filter-chemistry.h"
+#include "filter-enums.h"
+
+#include "filters/blend.h"
#include "sp-filter.h"
+#include "sp-filter-reference.h"
#include "sp-gaussian-blur.h"
#include "svg/css-ostringstream.h"
+#include "libnr/nr-matrix-fns.h"
#include "xml/repr.h"
* Count how many times the filter is used by the styles of o and its
* descendants
*/
-static guint
-count_filter_hrefs(SPObject *o, SPFilter *filter)
+static guint count_filter_hrefs(SPObject *o, SPFilter *filter)
{
if (!o)
return 1;
SPStyle *style = SP_OBJECT_STYLE(o);
if (style
&& style->filter.set
- && style->filter.filter == filter)
+ && style->getFilter() == filter)
{
i ++;
}
- for (SPObject *child = sp_object_first_child(o);
- child != NULL; child = SP_OBJECT_NEXT(child)) {
+ for ( SPObject *child = o->firstChild(); child; child = child->getNext() ) {
i += count_filter_hrefs(child, filter);
}
}
}
+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 = document->getReprDoc();
+
+ // create a new filter
+ Inkscape::XML::Node *repr;
+ repr = xml_doc->createElement("svg:filter");
+
+ // Append the new filter node to defs
+ 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 Inkscape::Filters::FilterPrimitiveType type)
+{
+ Inkscape::XML::Document *xml_doc = filter->document->getReprDoc();
+
+ //create filter primitive node
+ Inkscape::XML::Node *repr;
+ repr = xml_doc->createElement(FPConverter.get_key(type).c_str());
+
+ // set default values
+ switch(type) {
+ case Inkscape::Filters::NR_FILTER_BLEND:
+ repr->setAttribute("blend", "normal");
+ break;
+ case Inkscape::Filters::NR_FILTER_COLORMATRIX:
+ break;
+ case Inkscape::Filters::NR_FILTER_COMPONENTTRANSFER:
+ break;
+ case Inkscape::Filters::NR_FILTER_COMPOSITE:
+ break;
+ case Inkscape::Filters::NR_FILTER_CONVOLVEMATRIX:
+ repr->setAttribute("order", "3 3");
+ repr->setAttribute("kernelMatrix", "0 0 0 0 0 0 0 0 0");
+ break;
+ case Inkscape::Filters::NR_FILTER_DIFFUSELIGHTING:
+ break;
+ case Inkscape::Filters::NR_FILTER_DISPLACEMENTMAP:
+ break;
+ case Inkscape::Filters::NR_FILTER_FLOOD:
+ break;
+ case Inkscape::Filters::NR_FILTER_GAUSSIANBLUR:
+ repr->setAttribute("stdDeviation", "1");
+ break;
+ case Inkscape::Filters::NR_FILTER_IMAGE:
+ break;
+ case Inkscape::Filters::NR_FILTER_MERGE:
+ break;
+ case Inkscape::Filters::NR_FILTER_MORPHOLOGY:
+ break;
+ case Inkscape::Filters::NR_FILTER_OFFSET:
+ repr->setAttribute("dx", "0");
+ repr->setAttribute("dy", "0");
+ break;
+ case Inkscape::Filters::NR_FILTER_SPECULARLIGHTING:
+ break;
+ case Inkscape::Filters::NR_FILTER_TILE:
+ break;
+ case Inkscape::Filters::NR_FILTER_TURBULENCE:
+ break;
+ default:
+ break;
+ }
+
+ //set primitive as child of filter node
+ // XML tree being used directly while/where it shouldn't be...
+ filter->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
*/
SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
- Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
+ Inkscape::XML::Document *xml_doc = document->getReprDoc();
// create a new filter
Inkscape::XML::Node *repr;
@@ -119,7 +216,7 @@ new_filter_gaussian_blur (SPDocument *document, gdouble radius, double expansion
Inkscape::GC::release(b_repr);
// Append the new filter node to defs
- SP_OBJECT_REPR(defs)->appendChild(repr);
+ defs->appendChild(repr);
Inkscape::GC::release(repr);
// get corresponding object
@@ -134,26 +231,107 @@ 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 = document->getReprDoc();
+
+ // 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
+ 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);
+ Geom::OptRect const r = item->getBboxDesktop(SPItem::GEOMETRIC_BBOX);
double width;
double height;
if (r) {
- width = r->extent(NR::X);
- height= r->extent(NR::Y);
+ width = r->dimensions()[Geom::X];
+ height= r->dimensions()[Geom::Y];
} else {
width = height = 0;
}
- NR::Matrix i2d = sp_item_i2d_affine (item);
+ Geom::Matrix i2d (item->i2d_affine () );
- 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.descrim(), i2d.expansionX(), i2d.expansionY(), width, height));
}
/**
@@ -165,48 +343,46 @@ new_filter_gaussian_blur_from_item (SPDocument *document, SPItem *item, gdouble
* duplicated, so that other elements referring that filter are not modified.
*/
/* TODO: this should be made more generic, not just for blurs */
-SPFilter *
-modify_filter_gaussian_blur_from_item(SPDocument *document, SPItem *item,
- gdouble radius)
+SPFilter *modify_filter_gaussian_blur_from_item(SPDocument *document, SPItem *item,
+ gdouble radius)
{
if (!item->style || !item->style->filter.set) {
- return new_filter_gaussian_blur_from_item(document, item, radius);
+ return new_filter_simple_from_item(document, item, "normal", radius);
}
- SPFilter *filter = SP_FILTER(item->style->filter.filter);
- Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
+ SPFilter *filter = SP_FILTER(item->style->getFilter());
+ Inkscape::XML::Document *xml_doc = document->getReprDoc();
// 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->style->filter.filter)->duplicate(xml_doc);
+ if (filter->hrefcount > count_filter_hrefs(item, filter)) {
+ Inkscape::XML::Node *repr = SP_OBJECT_REPR(item->style->getFilter())->duplicate(xml_doc);
SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
- SP_OBJECT_REPR(defs)->appendChild(repr);
+ defs->appendChild(repr);
filter = SP_FILTER( document->getObjectByRepr(repr) );
Inkscape::GC::release(repr);
}
// Determine the required standard deviation value
- NR::Matrix i2d = sp_item_i2d_affine (item);
- double expansion = i2d.expansion();
+ Geom::Matrix i2d (item->i2d_affine ());
+ double expansion = i2d.descrim();
double stdDeviation = radius;
if (expansion != 0)
stdDeviation /= expansion;
// Get the object size
- NR::Maybe<NR::Rect> const r = sp_item_bbox_desktop(item);
+ Geom::OptRect const r = item->getBboxDesktop(SPItem::GEOMETRIC_BBOX);
double width;
double height;
if (r) {
- width = r->extent(NR::X);
- height= r->extent(NR::Y);
+ width = r->dimensions()[Geom::X];
+ height= r->dimensions()[Geom::Y];
} else {
width = height = 0;
}
// Set the filter effects area
- Inkscape::XML::Node *repr = SP_OBJECT_REPR(item->style->filter.filter);
+ Inkscape::XML::Node *repr = SP_OBJECT_REPR(item->style->getFilter());
set_filter_area(repr, radius, expansion, i2d.expansionX(),
i2d.expansionY(), width, height);
* be handled gracefully */
void remove_filter_gaussian_blur (SPObject *item)
{
- if (item->style && item->style->filter.set && item->style->filter.filter) {
+ if (item->style && item->style->filter.set && item->style->getFilter()) {
// Search for the first blur primitive and remove it. (if found)
- Inkscape::XML::Node *repr = SP_OBJECT_REPR(item->style->filter.filter);
+ Inkscape::XML::Node *repr = SP_OBJECT_REPR(item->style->getFilter());
Inkscape::XML::Node *primitive = repr->firstChild();
while (primitive) {
if (strcmp("svg:feGaussianBlur", primitive->name()) == 0) {
}
}
+bool filter_is_single_gaussian_blur(SPFilter *filter)
+{
+ return (SP_OBJECT(filter)->firstChild() &&
+ SP_OBJECT(filter)->firstChild() == SP_OBJECT(filter)->lastChild() &&
+ SP_IS_GAUSSIANBLUR(SP_OBJECT(filter)->firstChild()));
+}
+
+double get_single_gaussian_blur_radius(SPFilter *filter)
+{
+ if (SP_OBJECT(filter)->firstChild() &&
+ SP_OBJECT(filter)->firstChild() == SP_OBJECT(filter)->lastChild() &&
+ SP_IS_GAUSSIANBLUR(SP_OBJECT(filter)->firstChild())) {
+
+ SPGaussianBlur *gb = SP_GAUSSIANBLUR(SP_OBJECT(filter)->firstChild());
+ double x = gb->stdDeviation.getNumber();
+ double y = gb->stdDeviation.getOptNumber();
+ if (x > 0 && y > 0) {
+ return MAX(x, y);
+ }
+ return x;
+ }
+ return 0.0;
+}
+
+
+
/*
Local Variables:
mode:c++
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :