diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
commit | cca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch) | |
tree | 146f39ded1c938019e1ed42d30923c2ac9e86789 /src/object/filters/turbulence.cpp | |
parent | Initial commit. (diff) | |
download | inkscape-upstream/1.2.2.tar.xz inkscape-upstream/1.2.2.zip |
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/object/filters/turbulence.cpp | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/object/filters/turbulence.cpp b/src/object/filters/turbulence.cpp new file mode 100644 index 0000000..d8fe979 --- /dev/null +++ b/src/object/filters/turbulence.cpp @@ -0,0 +1,229 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** \file + * SVG <feTurbulence> implementation. + * + */ +/* + * Authors: + * Felipe CorrĂȘa da Silva Sanches <juca@members.fsf.org> + * hugo Rodrigues <haa.rodrigues@gmail.com> + * Abhishek Sharma + * + * Copyright (C) 2007 Felipe Sanches + * Copyright (C) 2006 Hugo Rodrigues + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include "attributes.h" +#include "svg/svg.h" +#include "turbulence.h" +#include "helper-fns.h" +#include "xml/repr.h" + +#include "display/nr-filter.h" + +SPFeTurbulence::SPFeTurbulence() : SPFilterPrimitive() { + this->stitchTiles = false; + this->seed = 0; + this->numOctaves = 0; + this->type = Inkscape::Filters::TURBULENCE_FRACTALNOISE; + + this->updated=false; +} + +SPFeTurbulence::~SPFeTurbulence() = default; + +/** + * Reads the Inkscape::XML::Node, and initializes SPFeTurbulence variables. For this to get called, + * our name must be associated with a repr via "sp_object_type_register". Best done through + * sp-object-repr.cpp's repr_name_entries array. + */ +void SPFeTurbulence::build(SPDocument *document, Inkscape::XML::Node *repr) { + SPFilterPrimitive::build(document, repr); + + /*LOAD ATTRIBUTES FROM REPR HERE*/ + this->readAttr(SPAttr::BASEFREQUENCY); + this->readAttr(SPAttr::NUMOCTAVES); + this->readAttr(SPAttr::SEED); + this->readAttr(SPAttr::STITCHTILES); + this->readAttr(SPAttr::TYPE); +} + +/** + * Drops any allocated memory. + */ +void SPFeTurbulence::release() { + SPFilterPrimitive::release(); +} + +static bool sp_feTurbulence_read_stitchTiles(gchar const *value){ + if (!value) { + return false; // 'noStitch' is default + } + + switch(value[0]){ + case 's': + if (strncmp(value, "stitch", 6) == 0) { + return true; + } + break; + case 'n': + if (strncmp(value, "noStitch", 8) == 0) { + return false; + } + break; + } + + return false; // 'noStitch' is default +} + +static Inkscape::Filters::FilterTurbulenceType sp_feTurbulence_read_type(gchar const *value){ + if (!value) { + return Inkscape::Filters::TURBULENCE_TURBULENCE; // 'turbulence' is default + } + + switch(value[0]){ + case 'f': + if (strncmp(value, "fractalNoise", 12) == 0) { + return Inkscape::Filters::TURBULENCE_FRACTALNOISE; + } + break; + case 't': + if (strncmp(value, "turbulence", 10) == 0) { + return Inkscape::Filters::TURBULENCE_TURBULENCE; + } + break; + } + + return Inkscape::Filters::TURBULENCE_TURBULENCE; // 'turbulence' is default +} + +/** + * Sets a specific value in the SPFeTurbulence. + */ +void SPFeTurbulence::set(SPAttr key, gchar const *value) { + int read_int; + double read_num; + bool read_bool; + Inkscape::Filters::FilterTurbulenceType read_type; + + switch(key) { + /*DEAL WITH SETTING ATTRIBUTES HERE*/ + case SPAttr::BASEFREQUENCY: + this->baseFrequency.set(value); + + // From SVG spec: If two <number>s are provided, the first number represents + // a base frequency in the X direction and the second value represents a base + // frequency in the Y direction. If one number is provided, then that value is + // used for both X and Y. + if (this->baseFrequency.optNumIsSet() == false) { + this->baseFrequency.setOptNumber(this->baseFrequency.getNumber()); + } + + this->updated = false; + this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); + break; + case SPAttr::NUMOCTAVES: + read_int = value ? (int)floor(helperfns_read_number(value)) : 1; + + if (read_int != this->numOctaves){ + this->numOctaves = read_int; + this->updated = false; + this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); + } + break; + case SPAttr::SEED: + read_num = value ? helperfns_read_number(value) : 0; + + if (read_num != this->seed){ + this->seed = read_num; + this->updated = false; + this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); + } + break; + case SPAttr::STITCHTILES: + read_bool = sp_feTurbulence_read_stitchTiles(value); + + if (read_bool != this->stitchTiles){ + this->stitchTiles = read_bool; + this->updated = false; + this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); + } + break; + case SPAttr::TYPE: + read_type = sp_feTurbulence_read_type(value); + + if (read_type != this->type){ + this->type = read_type; + this->updated = false; + this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); + } + break; + default: + SPFilterPrimitive::set(key, value); + break; + } +} + +/** + * Receives update notifications. + */ +void SPFeTurbulence::update(SPCtx *ctx, guint flags) { + if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | + SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) { + + /* do something to trigger redisplay, updates? */ + + } + + SPFilterPrimitive::update(ctx, flags); +} + +/** + * Writes its settings to an incoming repr object, if any. + */ +Inkscape::XML::Node* SPFeTurbulence::write(Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags) { + /* TODO: Don't just clone, but create a new repr node and write all + * relevant values into it */ + if (!repr) { + repr = this->getRepr()->duplicate(doc); + } + + SPFilterPrimitive::write(doc, repr, flags); + + /* turbulence doesn't take input */ + repr->removeAttribute("in"); + + return repr; +} + +void SPFeTurbulence::build_renderer(Inkscape::Filters::Filter* filter) { + g_assert(filter != nullptr); + + int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_TURBULENCE); + Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n); + Inkscape::Filters::FilterTurbulence *nr_turbulence = dynamic_cast<Inkscape::Filters::FilterTurbulence*>(nr_primitive); + g_assert(nr_turbulence != nullptr); + + this->renderer_common(nr_primitive); + + nr_turbulence->set_baseFrequency(0, this->baseFrequency.getNumber()); + nr_turbulence->set_baseFrequency(1, this->baseFrequency.getOptNumber()); + nr_turbulence->set_numOctaves(this->numOctaves); + nr_turbulence->set_seed(this->seed); + nr_turbulence->set_stitchTiles(this->stitchTiles); + nr_turbulence->set_type(this->type); + nr_turbulence->set_updated(this->updated); +} + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |