SharpMuPDF/mupdf/source/pdf/pdf-util.c

// Copyright (C) 2004-2021 Artifex Software, Inc.
//
// This file is part of MuPDF.
//
// MuPDF is free software: you can redistribute it and/or modify it under the
// terms of the GNU Affero General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
// details.
//
// You should have received a copy of the GNU Affero General Public License
// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
//
// Alternative licensing terms are available from the licensor.
// For commercial licensing, see <https://www.artifex.com/> or contact
// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
// CA 94129, USA, for further information.

#include "mupdf/fitz.h"
#include "mupdf/pdf.h"

fz_display_list *
pdf_new_display_list_from_annot(fz_context *ctx, pdf_annot *annot)
{
	fz_display_list *list;
	fz_device *dev = NULL;

	fz_var(dev);

	list = fz_new_display_list(ctx, pdf_bound_annot(ctx, annot));

	fz_try(ctx)
	{
		dev = fz_new_list_device(ctx, list);
		pdf_run_annot(ctx, annot, dev, fz_identity, NULL);
		fz_close_device(ctx, dev);
	}
	fz_always(ctx)
	{
		fz_drop_device(ctx, dev);
	}
	fz_catch(ctx)
	{
		fz_drop_display_list(ctx, list);
		fz_rethrow(ctx);
	}

	return list;
}

fz_pixmap *
pdf_new_pixmap_from_annot(fz_context *ctx, pdf_annot *annot, fz_matrix ctm, fz_colorspace *cs, fz_separations *seps, int alpha)
{
	fz_rect rect;
	fz_irect bbox;
	fz_pixmap *pix;
	fz_device *dev = NULL;

	fz_var(dev);

	rect = pdf_bound_annot(ctx, annot);
	rect = fz_transform_rect(rect, ctm);
	bbox = fz_round_rect(rect);

	pix = fz_new_pixmap_with_bbox(ctx, cs, bbox, seps, alpha);
	if (alpha)
		fz_clear_pixmap(ctx, pix);
	else
		fz_clear_pixmap_with_value(ctx, pix, 0xFF);

	fz_try(ctx)
	{
		dev = fz_new_draw_device(ctx, ctm, pix);
		pdf_run_annot(ctx, annot, dev, fz_identity, NULL);
		fz_close_device(ctx, dev);
	}
	fz_always(ctx)
	{
		fz_drop_device(ctx, dev);
	}
	fz_catch(ctx)
	{
		fz_drop_pixmap(ctx, pix);
		fz_rethrow(ctx);
	}

	return pix;
}

fz_stext_page *
pdf_new_stext_page_from_annot(fz_context *ctx, pdf_annot *annot, const fz_stext_options *options)
{
	fz_stext_page *text;
	fz_device *dev = NULL;

	fz_var(dev);

	if (annot == NULL)
		return NULL;

	text = fz_new_stext_page(ctx, pdf_bound_annot(ctx, annot));
	fz_try(ctx)
	{
		dev = fz_new_stext_device(ctx, text, options);
		pdf_run_annot(ctx, annot, dev, fz_identity, NULL);
		fz_close_device(ctx, dev);
	}
	fz_always(ctx)
	{
		fz_drop_device(ctx, dev);
	}
	fz_catch(ctx)
	{
		fz_drop_stext_page(ctx, text);
		fz_rethrow(ctx);
	}

	return text;
}

fz_pixmap *
pdf_new_pixmap_from_page_contents_with_separations_and_usage(fz_context *ctx, pdf_page *page, fz_matrix ctm, fz_colorspace *cs, fz_separations *seps, int alpha, const char *usage, fz_box_type box)
{
	fz_rect rect;
	fz_irect bbox;
	fz_pixmap *pix;
	fz_device *dev = NULL;

	fz_var(dev);

	rect = pdf_bound_page(ctx, page, box);
	rect = fz_transform_rect(rect, ctm);
	bbox = fz_round_rect(rect);

	pix = fz_new_pixmap_with_bbox(ctx, cs, bbox, seps, alpha);
	if (alpha)
		fz_clear_pixmap(ctx, pix);
	else
		fz_clear_pixmap_with_value(ctx, pix, 0xFF);

	fz_try(ctx)
	{
		dev = fz_new_draw_device(ctx, ctm, pix);
		fz_try(ctx)
		{
			pdf_run_page_contents_with_usage(ctx, page, dev, fz_identity, usage, NULL);
		}
		fz_catch(ctx)
		{
			dev->close_device = NULL; /* aborted run, don't warn about unclosed device */
			fz_rethrow_unless(ctx, FZ_ERROR_ABORT);
			fz_ignore_error(ctx);
		}
		fz_close_device(ctx, dev);
	}
	fz_always(ctx)
	{
		fz_drop_device(ctx, dev);
	}
	fz_catch(ctx)
	{
		fz_drop_pixmap(ctx, pix);
		fz_rethrow(ctx);
	}

	return pix;
}

fz_pixmap *
pdf_new_pixmap_from_page_contents_with_usage(fz_context *ctx, pdf_page *page, fz_matrix ctm, fz_colorspace *cs, int alpha, const char *usage, fz_box_type box)
{
	return pdf_new_pixmap_from_page_contents_with_separations_and_usage(ctx, page, ctm, cs, NULL, alpha, usage, box);
}

fz_pixmap *
pdf_new_pixmap_from_page_with_separations_and_usage(fz_context *ctx, pdf_page *page, fz_matrix ctm, fz_colorspace *cs, fz_separations *seps, int alpha, const char *usage, fz_box_type box)
{
	fz_rect rect;
	fz_irect bbox;
	fz_pixmap *pix;
	fz_device *dev = NULL;

	fz_var(dev);

	rect = pdf_bound_page(ctx, page, box);
	rect = fz_transform_rect(rect, ctm);
	bbox = fz_round_rect(rect);

	pix = fz_new_pixmap_with_bbox(ctx, cs, bbox, seps, alpha);

	fz_try(ctx)
	{
		if (alpha)
			fz_clear_pixmap(ctx, pix);
		else
			fz_clear_pixmap_with_value(ctx, pix, 0xFF);

		dev = fz_new_draw_device(ctx, ctm, pix);
		fz_try(ctx)
		{
			pdf_run_page_with_usage(ctx, page, dev, fz_identity, usage, NULL);
		}
		fz_catch(ctx)
		{
			dev->close_device = NULL; /* aborted run, don't warn about unclosed device */
			fz_rethrow_unless(ctx, FZ_ERROR_ABORT);
			fz_ignore_error(ctx);
		}
		fz_close_device(ctx, dev);
	}
	fz_always(ctx)
	{
		fz_drop_device(ctx, dev);
	}
	fz_catch(ctx)
	{
		fz_drop_pixmap(ctx, pix);
		fz_rethrow(ctx);
	}

	return pix;
}

fz_pixmap *
pdf_new_pixmap_from_page_with_usage(fz_context *ctx, pdf_page *page, fz_matrix ctm, fz_colorspace *cs, int alpha, const char *usage, fz_box_type box)
{
	return pdf_new_pixmap_from_page_with_separations_and_usage(ctx, page, ctm, cs, NULL, alpha, usage, box);
}