Adding upstream version 1.2.2.upstream/1.2.2upstream

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

1 files changed, 230 insertions, 0 deletions

diff --git a/src/live_effects/fill-conversion.cpp b/src/live_effects/fill-conversion.cpp
new file mode 100644
index 0000000..b019855
--- /dev/null
+++ b/src/live_effects/fill-conversion.cpp
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Fill/stroke conversion routines for LPEs which draw a stroke
+ *
+ * Authors:
+ *   Liam P White
+ *
+ * Copyright (C) 2020 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "fill-conversion.h"
+
+#include "document.h"
+#include "desktop-style.h"
+#include "object/sp-shape.h"
+#include "object/sp-defs.h"
+#include "object/sp-paint-server.h"
+#include "svg/svg-color.h"
+#include "svg/css-ostringstream.h"
+#include "style.h"
+
+static SPObject *generate_linked_fill(SPShape *source)
+{
+    // Create new fill and effect object
+    SPDocument *doc = source->document;
+    SPObject *defs  = doc->getDefs();
+
+    Inkscape::XML::Node *effectRepr = doc->getReprDoc()->createElement("inkscape:path-effect");
+    SPObject *effectObj             = nullptr;
+    Inkscape::XML::Node *pathRepr   = doc->getReprDoc()->createElement("svg:path");
+    SPObject *pathObj               = nullptr;
+
+    gchar *effectTarget = nullptr;
+    gchar *pathTarget   = nullptr;
+
+    effectTarget = g_strdup_printf("#%s,0,1", source->getId());
+    effectRepr->setAttribute("effect", "fill_between_many");
+    effectRepr->setAttribute("method", "bsplinespiro");
+    effectRepr->setAttribute("linkedpaths", effectTarget);
+    defs->appendChild(effectRepr);
+    Inkscape::GC::release(effectRepr);
+
+    effectObj = doc->getObjectByRepr(effectRepr);
+
+    pathTarget = g_strdup_printf("#%s", effectObj->getId());
+    pathRepr->setAttribute("inkscape:original-d", "M 0,0");
+    pathRepr->setAttribute("inkscape:path-effect", pathTarget);
+    pathRepr->setAttribute("d", "M 0,0");
+    
+    SPObject *prev = source->getPrev();
+    source->parent->addChild(pathRepr, prev ? prev->getRepr() : nullptr);
+    Inkscape::GC::release(pathRepr);
+    pathObj = doc->getObjectByRepr(pathRepr);
+    source->setAttribute("inkscape:linked-fill", pathObj->getId());
+
+    g_free(effectTarget);
+    g_free(pathTarget);
+
+    return pathObj;
+}
+
+static SPObject *get_linked_fill(SPObject *source)
+{
+    SPDocument *doc = source->document;
+
+    char const *linked_fill_id = source->getAttribute("inkscape:linked-fill");
+    if (!linked_fill_id) {
+        return nullptr;
+    }
+
+    return doc->getObjectById(linked_fill_id);
+}
+
+static void convert_fill_color(SPCSSAttr *css, SPObject *source)
+{
+    char c[64];
+
+    sp_svg_write_color(c, sizeof(c), source->style->fill.value.color.toRGBA32(SP_SCALE24_TO_FLOAT(source->style->fill_opacity.value)));
+    sp_repr_css_set_property(css, "fill", c);
+}
+
+static void convert_stroke_color(SPCSSAttr *css, SPObject *source)
+{
+    char c[64];
+
+    sp_svg_write_color(c, sizeof(c), source->style->stroke.value.color.toRGBA32(SP_SCALE24_TO_FLOAT(source->style->stroke_opacity.value)));
+    sp_repr_css_set_property(css, "fill", c);
+}
+
+static void revert_stroke_color(SPCSSAttr *css, SPObject *source)
+{
+    char c[64];
+
+    sp_svg_write_color(c, sizeof(c), source->style->fill.value.color.toRGBA32(SP_SCALE24_TO_FLOAT(source->style->fill_opacity.value)));
+    sp_repr_css_set_property(css, "stroke", c);
+}
+
+static void convert_fill_server(SPCSSAttr *css, SPObject *source)
+{
+    SPPaintServer *server = source->style->getFillPaintServer();
+
+    if (server) {
+        Glib::ustring str;
+        str += "url(#";
+        str += server->getId();
+        str += ")";
+        sp_repr_css_set_property(css, "fill", str.c_str());
+    }
+}
+
+static void convert_stroke_server(SPCSSAttr *css, SPObject *source)
+{
+    SPPaintServer *server = source->style->getStrokePaintServer();
+
+    if (server) {
+        Glib::ustring str;
+        str += "url(#";
+        str += server->getId();
+        str += ")";
+        sp_repr_css_set_property(css, "fill", str.c_str());
+    }
+}
+
+static void revert_stroke_server(SPCSSAttr *css, SPObject *source)
+{
+    SPPaintServer *server = source->style->getFillPaintServer();
+
+    if (server) {
+        Glib::ustring str;
+        str += "url(#";
+        str += server->getId();
+        str += ")";
+        sp_repr_css_set_property(css, "stroke", str.c_str());
+    }
+}
+
+static bool has_fill(SPObject *source)
+{
+    return source->style->fill.isColor() || source->style->fill.isPaintserver();
+}
+
+static bool has_stroke(SPObject *source)
+{
+    return source->style->stroke.isColor() || source->style->stroke.isPaintserver();
+}
+
+namespace Inkscape {
+namespace LivePathEffect {
+
+void lpe_shape_convert_stroke_and_fill(SPShape *shape)
+{
+    if (has_fill(shape)) {
+        SPCSSAttr *fill_css = sp_repr_css_attr_new();
+        SPObject *linked = generate_linked_fill(shape);
+
+        if (shape->style->fill.isColor()) {
+            convert_fill_color(fill_css, shape);
+        } else {
+            convert_fill_server(fill_css, shape);
+        }
+
+        sp_desktop_apply_css_recursive(linked, fill_css, true);
+        sp_repr_css_attr_unref(fill_css);
+    }
+
+    SPCSSAttr *stroke_css = sp_repr_css_attr_new();
+
+    if (has_stroke(shape)) {
+        if (shape->style->stroke.isColor()) {
+            convert_stroke_color(stroke_css, shape);
+        } else {
+            convert_stroke_server(stroke_css, shape);
+        }
+    }
+
+    sp_repr_css_set_property(stroke_css, "fill-rule", "nonzero");
+    sp_repr_css_set_property(stroke_css, "stroke", "none");
+    sp_desktop_apply_css_recursive(shape, stroke_css, true);
+    sp_repr_css_attr_unref(stroke_css);
+}
+
+void lpe_shape_revert_stroke_and_fill(SPShape *shape, double width)
+{
+    SPObject *linked = get_linked_fill(shape);
+    SPCSSAttr *css = sp_repr_css_attr_new();
+
+    if (has_fill(shape)) {
+        if (shape->style->fill.isColor()) {
+            revert_stroke_color(css, shape);
+        } else {
+            revert_stroke_server(css, shape);
+        }
+    }
+
+    if (linked != nullptr) {
+        if (linked->style->fill.isColor()) {
+            convert_fill_color(css, linked);
+        } else {
+            convert_fill_server(css, linked);
+        }
+
+        linked->deleteObject();
+    } else {
+        sp_repr_css_set_property(css, "fill", "none");
+    }
+
+    Inkscape::CSSOStringStream os;
+    os << fabs(width);
+    sp_repr_css_set_property(css, "stroke-width", os.str().c_str());
+
+    sp_desktop_apply_css_recursive(shape, css, true);
+    sp_repr_css_attr_unref(css);
+}
+
+}
+}
+
+/*
+  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 :