1 files changed, 101 insertions, 0 deletions
diff --git a/src/object/sp-dimensions.cpp b/src/object/sp-dimensions.cpp
new file mode 100644
index 0000000..b5d8c47
--- /dev/null
+++ b/src/object/sp-dimensions.cpp
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * SVG dimensions implementation
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Edward Flick (EAF)
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 1999-2005 Authors
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "sp-dimensions.h"
+#include "sp-item.h"
+#include "svg/svg.h"
+
+/**
+ * Update computed x/y/width/height for "percent" units and/or from its
+ * referencing clone parent.
+ *
+ * @param assign_to_set Set `_set` to true for x/y/width/height.
+ * @param use If not NULL, then overwrite computed width and height from there.
+ */
+void SPDimensions::calcDimsFromParentViewport(const SPItemCtx *ictx, bool assign_to_set, //
+                                              SPDimensions const *use)
+{
+#define ASSIGN(field) { if (assign_to_set) { field._set = true; } }
+
+    auto const *effectivewidth = &this->width;
+    auto const *effectiveheight = &this->height;
+
+    if (use) {
+        assert(!assign_to_set);
+
+        if (use->width._set) {
+            effectivewidth = &use->width;
+        }
+
+        if (use->height._set) {
+            effectiveheight = &use->height;
+        }
+    }
+
+    if (this->x.unit == SVGLength::PERCENT) {
+        ASSIGN(x);
+        this->x.computed = this->x.value * ictx->viewport.width();
+    }
+
+    if (this->y.unit == SVGLength::PERCENT) {
+        ASSIGN(y);
+        this->y.computed = this->y.value * ictx->viewport.height();
+    }
+
+    if (effectivewidth->unit == SVGLength::PERCENT) {
+        ASSIGN(width);
+        this->width.computed = effectivewidth->value * ictx->viewport.width();
+    } else {
+        this->width.computed = effectivewidth->computed;
+    }
+
+    if (effectiveheight->unit == SVGLength::PERCENT) {
+        ASSIGN(height);
+        this->height.computed = effectiveheight->value * ictx->viewport.height();
+    } else {
+        this->height.computed = effectiveheight->computed;
+    }
+}
+
+/**
+ * Write the geometric properties (x/y/width/height) to XML attributes, if they are set.
+ */
+void SPDimensions::writeDimensions(Inkscape::XML::Node *repr) const
+{
+    if (x._set) {
+        repr->setAttribute("x", sp_svg_length_write_with_units(x));
+    }
+    if (y._set) {
+        repr->setAttribute("y", sp_svg_length_write_with_units(y));
+    }
+    if (width._set) {
+        repr->setAttribute("width", sp_svg_length_write_with_units(width));
+    }
+    if (height._set) {
+        repr->setAttribute("height", sp_svg_length_write_with_units(height));
+    }
+}
+
+/*
+  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 :