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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) Steren Giannini 2008 <steren.giannini@gmail.com>
* Abhishek Sharma
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "document.h"
#include "live_effects/lpegroupbbox.h"
#include "object/sp-clippath.h"
#include "object/sp-mask.h"
#include "object/sp-root.h"
#include "object/sp-shape.h"
#include "object/sp-item-group.h"
#include "object/sp-lpe-item.h"
namespace Inkscape {
namespace LivePathEffect {
/**
* Updates the \c boundingbox_X and \c boundingbox_Y values from the geometric bounding box of \c lpeitem.
*
* @pre lpeitem must have an existing geometric boundingbox (usually this is guaranteed when: \code SP_SHAPE(lpeitem)->curve != NULL \endcode )
* It's not possible to run LPEs on items without their original-d having a bbox.
* @param lpeitem This is not allowed to be NULL.
* @param absolute Determines whether the bbox should be calculated of the untransformed lpeitem (\c absolute = \c false)
* or of the transformed lpeitem (\c absolute = \c true) using sp_item_i2doc_affine.
* @post Updated values of boundingbox_X and boundingbox_Y. These intervals are set to empty intervals when the precondition is not met.
*/
Geom::OptRect
GroupBBoxEffect::clip_mask_bbox(SPLPEItem *item, Geom::Affine transform)
{
Geom::OptRect bbox;
Geom::Affine affine = transform * item->transform;
SPClipPath *clip_path = item->getClipObject();
if(clip_path) {
bbox.unionWith(clip_path->geometricBounds(affine));
}
SPMask * mask_path = item->getMaskObject();
if(mask_path) {
bbox.unionWith(mask_path->visualBounds(affine));
}
SPGroup * group = dynamic_cast<SPGroup *>(item);
if (group) {
std::vector<SPItem*> item_list = sp_item_group_item_list(group);
for (auto iter : item_list) {
SPLPEItem * subitem = dynamic_cast<SPLPEItem *>(iter);
if (subitem) {
bbox.unionWith(clip_mask_bbox(subitem, affine));
}
}
}
return bbox;
}
void GroupBBoxEffect::original_bbox(SPLPEItem const* lpeitem, bool absolute, bool clip_mask, Geom::Affine base_transform)
{
// Get item bounding box
Geom::Affine transform;
if (absolute) {
transform = lpeitem->i2doc_affine();
}
else {
transform = base_transform;
}
Geom::OptRect bbox = lpeitem->geometricBounds(transform);
if (clip_mask) {
SPLPEItem * item = const_cast<SPLPEItem *>(lpeitem);
bbox.unionWith(clip_mask_bbox(item, transform * item->transform.inverse()));
}
if (bbox) {
boundingbox_X = (*bbox)[Geom::X];
boundingbox_Y = (*bbox)[Geom::Y];
} else {
boundingbox_X = Geom::Interval();
boundingbox_Y = Geom::Interval();
}
}
} // namespace LivePathEffect
} /* namespace Inkscape */
/*
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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