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// 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 :
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