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Viewing changes to src/sp-linear-gradient.cpp

  • Committer: scislac
  • Date: 2009-08-12 07:57:52 UTC
  • Revision ID: scislac@users.sourceforge.net-20090812075752-3zt99jgeqr3bm16j
much better quality multi-size windows icon, thanks ChrisMorgan

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src/sp-linear-gradient.cpp
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#include <cairo.h>
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#include "sp-linear-gradient.h"
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#include "attributes.h"
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#include "xml/repr.h"
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/*
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 * Linear Gradient
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 */
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SPLinearGradient::SPLinearGradient() : SPGradient() {
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    this->x1.unset(SVGLength::PERCENT, 0.0, 0.0);
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    this->y1.unset(SVGLength::PERCENT, 0.0, 0.0);
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    this->x2.unset(SVGLength::PERCENT, 1.0, 1.0);
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    this->y2.unset(SVGLength::PERCENT, 0.0, 0.0);
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}
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SPLinearGradient::~SPLinearGradient() {
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}
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void SPLinearGradient::build(SPDocument *document, Inkscape::XML::Node *repr) {
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    SPGradient::build(document, repr);
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    this->readAttr( "x1" );
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    this->readAttr( "y1" );
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    this->readAttr( "x2" );
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    this->readAttr( "y2" );
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}
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/**
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 * Callback: set attribute.
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 */
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void SPLinearGradient::set(unsigned int key, const gchar* value) {
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    switch (key) {
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        case SP_ATTR_X1:
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            this->x1.readOrUnset(value, SVGLength::PERCENT, 0.0, 0.0);
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            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
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            break;
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        case SP_ATTR_Y1:
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            this->y1.readOrUnset(value, SVGLength::PERCENT, 0.0, 0.0);
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            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
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            break;
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        case SP_ATTR_X2:
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            this->x2.readOrUnset(value, SVGLength::PERCENT, 1.0, 1.0);
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            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
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            break;
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        case SP_ATTR_Y2:
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            this->y2.readOrUnset(value, SVGLength::PERCENT, 0.0, 0.0);
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            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
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            break;
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        default:
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            SPGradient::set(key, value);
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            break;
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    }
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}
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/**
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 * Callback: write attributes to associated repr.
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 */
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Inkscape::XML::Node* SPLinearGradient::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
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    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
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        repr = xml_doc->createElement("svg:linearGradient");
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    }
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    if ((flags & SP_OBJECT_WRITE_ALL) || this->x1._set) {
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        sp_repr_set_svg_double(repr, "x1", this->x1.computed);
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    }
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    if ((flags & SP_OBJECT_WRITE_ALL) || this->y1._set) {
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        sp_repr_set_svg_double(repr, "y1", this->y1.computed);
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    }
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    if ((flags & SP_OBJECT_WRITE_ALL) || this->x2._set) {
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        sp_repr_set_svg_double(repr, "x2", this->x2.computed);
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    }
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    if ((flags & SP_OBJECT_WRITE_ALL) || this->y2._set) {
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        sp_repr_set_svg_double(repr, "y2", this->y2.computed);
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    }
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    SPGradient::write(xml_doc, repr, flags);
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    return repr;
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}
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cairo_pattern_t* SPLinearGradient::pattern_new(cairo_t * /*ct*/, Geom::OptRect const &bbox, double opacity) {
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    this->ensureVector();
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    cairo_pattern_t *cp = cairo_pattern_create_linear(
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        this->x1.computed, this->y1.computed,
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        this->x2.computed, this->y2.computed);
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    sp_gradient_pattern_common_setup(cp, this, bbox, opacity);
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    return cp;
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}