1 #define __SP_FILTER_CHEMISTRY_C__
3 /*
4 * Various utility methods for filters
5 *
6 * Authors:
7 * Hugo Rodrigues
8 * bulia byak
9 *
10 * Copyright (C) 2006 authors
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
16 #include "style.h"
17 #include "document-private.h"
18 #include "desktop-style.h"
20 #include "sp-filter.h"
21 #include "sp-gaussian-blur.h"
22 #include "svg/css-ostringstream.h"
24 #include "xml/repr.h"
26 /**
27 * Creates a filter with blur primitive of specified stdDeviation
28 */
29 SPFilter *
30 new_filter_gaussian_blur (SPDocument *document, gdouble stdDeviation)
31 {
32 g_return_val_if_fail(document != NULL, NULL);
34 SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document);
36 // create a new private filter
37 Inkscape::XML::Node *repr;
38 repr = sp_repr_new("svg:filter");
39 repr->setAttribute("inkscape:collect", "always");
41 //create feGaussianBlur node
42 Inkscape::XML::Node *b_repr;
43 b_repr = sp_repr_new("svg:feGaussianBlur");
44 b_repr->setAttribute("inkscape:collect", "always");
46 //set stdDeviation attribute
47 Inkscape::CSSOStringStream os;
48 os << stdDeviation;
49 b_repr->setAttribute("stdDeviation", os.str().c_str());
51 //set feGaussianBlur as child of filter node
52 repr->appendChild(b_repr);
53 Inkscape::GC::release(b_repr);
55 // Append the new filter node to defs
56 SP_OBJECT_REPR(defs)->appendChild(repr);
57 Inkscape::GC::release(repr);
59 // get corresponding object
60 SPFilter *f = SP_FILTER( document->getObjectByRepr(repr) );
61 SPGaussianBlur *b = SP_GAUSSIANBLUR( document->getObjectByRepr(b_repr) );
63 g_assert(f != NULL);
64 g_assert(SP_IS_FILTER(f));
65 g_assert(b != NULL);
66 g_assert(SP_IS_GAUSSIANBLUR(b));
68 return f;
69 }
71 void remove_filter (SPObject *item, bool recursive)
72 {
73 SPCSSAttr *css = sp_repr_css_attr_new ();
74 sp_repr_css_unset_property (css, "filter");
75 if (recursive)
76 sp_repr_css_change_recursive(SP_OBJECT_REPR(item), css, "style");
77 else
78 sp_repr_css_change (SP_OBJECT_REPR(item), css, "style");
79 sp_repr_css_attr_unref (css);
80 }
82 /*
83 Local Variables:
84 mode:c++
85 c-file-style:"stroustrup"
86 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
87 indent-tabs-mode:nil
88 fill-column:99
89 End:
90 */
91 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :