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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* Utility structures and functions for pdf parsing.
*//*
*
* Copyright (C) 2023 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glib.h>
#include "pdf-utils.h"
#include "poppler-utils.h"
//------------------------------------------------------------------------
// ClipHistoryEntry
//------------------------------------------------------------------------
ClipHistoryEntry::ClipHistoryEntry(GfxPath *clipPathA, GfxClipType clipTypeA)
: saved(nullptr)
, clipPath((clipPathA) ? clipPathA->copy() : nullptr)
, clipType(clipTypeA)
{}
ClipHistoryEntry::~ClipHistoryEntry()
{
if (clipPath) {
delete clipPath;
clipPath = nullptr;
}
}
void ClipHistoryEntry::setClip(GfxState *state, GfxClipType clipTypeA, bool bbox)
{
const GfxPath *clipPathA = state->getPath();
if (clipPath) {
if (copied) {
// Free previously copied clip path.
delete clipPath;
} else {
// This indicates a bad use of the ClipHistory API
g_error("Clip path is already set!");
return;
}
}
cleared = false;
copied = false;
if (clipPathA) {
affine = stateToAffine(state);
clipPath = clipPathA->copy();
clipType = clipTypeA;
is_bbox = bbox;
} else {
affine = Geom::identity();
clipPath = nullptr;
clipType = clipNormal;
is_bbox = false;
}
}
/**
* Create a new clip-history, appending it to the stack.
*
* If cleared is set to true, it will not remember the current clipping path.
*/
ClipHistoryEntry *ClipHistoryEntry::save(bool cleared)
{
ClipHistoryEntry *newEntry = new ClipHistoryEntry(this, cleared);
newEntry->saved = this;
return newEntry;
}
ClipHistoryEntry *ClipHistoryEntry::restore()
{
ClipHistoryEntry *oldEntry;
if (saved) {
oldEntry = saved;
saved = nullptr;
delete this; // TODO really should avoid deleting from inside.
} else {
oldEntry = this;
}
return oldEntry;
}
ClipHistoryEntry::ClipHistoryEntry(ClipHistoryEntry *other, bool cleared)
{
if (other && other->clipPath) {
this->affine = other->affine;
this->clipPath = other->clipPath->copy();
this->clipType = other->clipType;
this->cleared = cleared;
this->copied = true;
this->is_bbox = other->is_bbox;
} else {
this->affine = Geom::identity();
this->clipPath = nullptr;
this->clipType = clipNormal;
this->cleared = false;
this->copied = false;
this->is_bbox = false;
}
saved = nullptr;
}
Geom::Rect getRect(_POPPLER_CONST PDFRectangle *box)
{
return Geom::Rect(box->x1, box->y1, box->x2, box->y2);
}
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