Adding upstream version 1.3+ds.upstream/1.3+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/src/object/sp-radial-gradient.cpp b/src/object/sp-radial-gradient.cpp
new file mode 100644
index 0000000..b8b4885
--- /dev/null
+++ b/src/object/sp-radial-gradient.cpp
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#include <cairo.h>
+#include <2geom/transforms.h>
+
+#include "sp-radial-gradient.h"
+
+#include "attributes.h"
+#include "style.h"
+#include "xml/repr.h"
+
+#include "display/drawing-paintserver.h"
+
+/*
+ * Radial Gradient
+ */
+SPRadialGradient::SPRadialGradient() : SPGradient() {
+    this->cx.unset(SVGLength::PERCENT, 0.5, 0.5);
+    this->cy.unset(SVGLength::PERCENT, 0.5, 0.5);
+    this->r.unset(SVGLength::PERCENT, 0.5, 0.5);
+    this->fx.unset(SVGLength::PERCENT, 0.5, 0.5);
+    this->fy.unset(SVGLength::PERCENT, 0.5, 0.5);
+    this->fr.unset(SVGLength::PERCENT, 0.5, 0.5);
+}
+
+SPRadialGradient::~SPRadialGradient() = default;
+
+/**
+ * Set radial gradient attributes from associated repr.
+ */
+void SPRadialGradient::build(SPDocument *document, Inkscape::XML::Node *repr) {
+    SPGradient::build(document, repr);
+
+    this->readAttr(SPAttr::CX);
+    this->readAttr(SPAttr::CY);
+    this->readAttr(SPAttr::R);
+    this->readAttr(SPAttr::FX);
+    this->readAttr(SPAttr::FY);
+    this->readAttr(SPAttr::FR);
+}
+
+/**
+ * Set radial gradient attribute.
+ */
+void SPRadialGradient::set(SPAttr key, gchar const *value) {
+
+    switch (key) {
+        case SPAttr::CX:
+            if (!this->cx.read(value)) {
+                this->cx.unset(SVGLength::PERCENT, 0.5, 0.5);
+            }
+
+            if (!this->fx._set) {
+                this->fx.value = this->cx.value;
+                this->fx.computed = this->cx.computed;
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::CY:
+            if (!this->cy.read(value)) {
+                this->cy.unset(SVGLength::PERCENT, 0.5, 0.5);
+            }
+
+            if (!this->fy._set) {
+                this->fy.value = this->cy.value;
+                this->fy.computed = this->cy.computed;
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::R:
+            if (!this->r.read(value)) {
+                this->r.unset(SVGLength::PERCENT, 0.5, 0.5);
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::FX:
+            if (!this->fx.read(value)) {
+                this->fx.unset(this->cx.unit, this->cx.value, this->cx.computed);
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::FY:
+            if (!this->fy.read(value)) {
+                this->fy.unset(this->cy.unit, this->cy.value, this->cy.computed);
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::FR:
+            if (!this->fr.read(value)) {
+                this->fr.unset(SVGLength::PERCENT, 0.0, 0.0);
+            }
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        default:
+            SPGradient::set(key, value);
+            break;
+    }
+}
+
+void
+SPRadialGradient::update(SPCtx *ctx, guint flags)
+{
+    // To do: Verify flags.
+    if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+
+        SPItemCtx const *ictx = reinterpret_cast<SPItemCtx const *>(ctx);
+
+        if (getUnits() == SP_GRADIENT_UNITS_USERSPACEONUSE) {
+            double w = ictx->viewport.width();
+            double h = ictx->viewport.height();
+            double d = sqrt ((w*w + h*h)/2.0);
+            double const em = style->font_size.computed;
+            double const ex = 0.5 * em;  // fixme: get x height from pango or libnrtype.
+
+            this->cx.update(em, ex, w);
+            this->cy.update(em, ex, h);
+            this->r.update(em, ex, d);
+            this->fx.update(em, ex, w);
+            this->fy.update(em, ex, h);
+            this->fr.update(em, ex, d);
+        }
+    }
+}
+
+/**
+ * Write radial gradient attributes to associated repr.
+ */
+Inkscape::XML::Node* SPRadialGradient::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+        repr = xml_doc->createElement("svg:radialGradient");
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->cx._set) {
+    	repr->setAttributeSvgDouble("cx", this->cx.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->cy._set) {
+    	repr->setAttributeSvgDouble("cy", this->cy.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->r._set) {
+    	repr->setAttributeSvgDouble("r", this->r.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->fx._set) {
+    	repr->setAttributeSvgDouble("fx", this->fx.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->fy._set) {
+    	repr->setAttributeSvgDouble("fy", this->fy.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->fr._set) {
+    	repr->setAttributeSvgDouble("fr", this->fr.computed);
+    }
+
+    SPGradient::write(xml_doc, repr, flags);
+
+    return repr;
+}
+
+std::unique_ptr<Inkscape::DrawingPaintServer> SPRadialGradient::create_drawing_paintserver()
+{
+    ensureVector();
+    return std::make_unique<Inkscape::DrawingRadialGradient>(getSpread(), getUnits(), gradientTransform,
+                                                             fx.computed, fy.computed, cx.computed, cy.computed, r.computed, fr.computed, vector.stops);
+}
+
+/*
+  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 :