summaryrefslogtreecommitdiffstats
path: root/src/object/sp-line.cpp
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:24:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:24:48 +0000
commitcca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch)
tree146f39ded1c938019e1ed42d30923c2ac9e86789 /src/object/sp-line.cpp
parentInitial commit. (diff)
downloadinkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.tar.xz
inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.zip
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/object/sp-line.cpp')
-rw-r--r--src/object/sp-line.cpp173
1 files changed, 173 insertions, 0 deletions
diff --git a/src/object/sp-line.cpp b/src/object/sp-line.cpp
new file mode 100644
index 0000000..bcc13e9
--- /dev/null
+++ b/src/object/sp-line.cpp
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * SVG <line> implementation
+ *
+ * Authors:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ * Abhishek Sharma
+ * Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "attributes.h"
+#include "style.h"
+#include "sp-line.h"
+#include "sp-guide.h"
+#include "display/curve.h"
+#include <glibmm/i18n.h>
+#include "document.h"
+#include "inkscape.h"
+
+SPLine::SPLine() : SPShape() {
+ this->x1.unset();
+ this->y1.unset();
+ this->x2.unset();
+ this->y2.unset();
+}
+
+SPLine::~SPLine() = default;
+
+void SPLine::build(SPDocument * document, Inkscape::XML::Node * repr) {
+ SPShape::build(document, repr);
+
+ this->readAttr(SPAttr::X1);
+ this->readAttr(SPAttr::Y1);
+ this->readAttr(SPAttr::X2);
+ this->readAttr(SPAttr::Y2);
+}
+
+void SPLine::set(SPAttr key, const gchar* value) {
+ /* fixme: we should really collect updates */
+
+ switch (key) {
+ case SPAttr::X1:
+ this->x1.readOrUnset(value);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::Y1:
+ this->y1.readOrUnset(value);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::X2:
+ this->x2.readOrUnset(value);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::Y2:
+ this->y2.readOrUnset(value);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ default:
+ SPShape::set(key, value);
+ break;
+ }
+}
+
+void SPLine::update(SPCtx *ctx, guint flags) {
+ if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+ SPStyle const *style = this->style;
+ SPItemCtx const *ictx = (SPItemCtx const *) ctx;
+ double const w = ictx->viewport.width();
+ double const h = ictx->viewport.height();
+ double const em = style->font_size.computed;
+ double const ex = em * 0.5; // fixme: get from pango or libnrtype.
+
+ this->x1.update(em, ex, w);
+ this->x2.update(em, ex, w);
+ this->y1.update(em, ex, h);
+ this->y2.update(em, ex, h);
+
+ this->set_shape();
+ }
+
+ SPShape::update(ctx, flags);
+}
+
+Inkscape::XML::Node* SPLine::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+ if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+ repr = xml_doc->createElement("svg:line");
+ }
+
+ if (repr != this->getRepr()) {
+ repr->mergeFrom(this->getRepr(), "id");
+ }
+
+ repr->setAttributeSvgDouble("x1", this->x1.computed);
+ repr->setAttributeSvgDouble("y1", this->y1.computed);
+ repr->setAttributeSvgDouble("x2", this->x2.computed);
+ repr->setAttributeSvgDouble("y2", this->y2.computed);
+
+ SPShape::write(xml_doc, repr, flags);
+
+ return repr;
+}
+
+const char* SPLine::typeName() const {
+ return "path";
+}
+
+const char* SPLine::displayName() const {
+ return _("Line");
+}
+
+void SPLine::convert_to_guides() const {
+ Geom::Point points[2];
+ Geom::Affine const i2dt(this->i2dt_affine());
+
+ points[0] = Geom::Point(this->x1.computed, this->y1.computed)*i2dt;
+ points[1] = Geom::Point(this->x2.computed, this->y2.computed)*i2dt;
+
+ SPGuide::createSPGuide(this->document, points[0], points[1]);
+}
+
+
+Geom::Affine SPLine::set_transform(Geom::Affine const &transform) {
+ Geom::Point points[2];
+
+ points[0] = Geom::Point(this->x1.computed, this->y1.computed);
+ points[1] = Geom::Point(this->x2.computed, this->y2.computed);
+
+ points[0] *= transform;
+ points[1] *= transform;
+
+ this->x1.computed = points[0][Geom::X];
+ this->y1.computed = points[0][Geom::Y];
+ this->x2.computed = points[1][Geom::X];
+ this->y2.computed = points[1][Geom::Y];
+
+ this->adjust_stroke(transform.descrim());
+
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
+
+ return Geom::identity();
+}
+
+void SPLine::set_shape() {
+ auto c = std::make_unique<SPCurve>();
+
+ c->moveto(this->x1.computed, this->y1.computed);
+ c->lineto(this->x2.computed, this->y2.computed);
+
+ // *_insync does not call update, avoiding infinite recursion when set_shape is called by update
+ setCurveInsync(std::move(c));
+ setCurveBeforeLPE(curve());
+
+ // LPE's cannot be applied to lines. (the result can (generally) not be represented as SPLine)
+}
+
+/*
+ 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 :