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/* Copyright (C) 2002 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gdevpdt.h,v 1.2 2003/04/08 16:31:56 igor Exp $ */
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/* Interface for pdfwrite text and fonts */
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#ifndef gdevpdt_INCLUDED
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# define gdevpdt_INCLUDED
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/*
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* This file defines a largely opaque interface to the text and font
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* handling code for pdfwrite. This is the only file that pdfwrite code
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* outside the text and font handling subsystem (pdftext.dev) should
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* #include.
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*
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* The declarations in this file deliberately duplicate declarations in
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* various other header files of the pdfwrite text/font subsystem.
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* This allows the compiler to check them for consistency.
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*/
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/* ================ Procedures ================ */
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/* ---------------- Utility (for gdevpdf.c) ---------------- */
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/*
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* Allocate and initialize text state bookkeeping.
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*/
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pdf_text_state_t *pdf_text_state_alloc(gs_memory_t *mem);
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/*
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* Allocate and initialize the text data structure.
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*/
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pdf_text_data_t *pdf_text_data_alloc(gs_memory_t *mem); /* gdevpdts.h */
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/*
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* Reset the text state at the beginning of the page.
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*/
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void pdf_reset_text_page(pdf_text_data_t *ptd); /* gdevpdts.h */
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/*
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* Reset the text state after a grestore.
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*/
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void pdf_reset_text_state(pdf_text_data_t *ptd); /* gdevpdts.h */
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/*
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* Update text state at the end of a page.
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*/
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void pdf_close_text_page(gx_device_pdf *pdev); /* gdevpdti.h */
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/*
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* Close the text-related parts of a document, including writing out font
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* and related resources.
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*/
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int pdf_close_text_document(gx_device_pdf *pdev); /* gdevpdtw.h */
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/* ---------------- Contents state (for gdevpdfu.c) ---------------- */
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/*
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* Transition from stream context to text context.
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*/
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int pdf_from_stream_to_text(gx_device_pdf *pdev); /* gdevpdts.h */
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/*
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* Transition from string context to text context.
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*/
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int pdf_from_string_to_text(gx_device_pdf *pdev); /* gdevpdts.h */
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/*
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* Close the text aspect of the current contents part.
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*/
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void pdf_close_text_contents(gx_device_pdf *pdev); /* gdevpdts.h */
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/* ---------------- Bitmap fonts (for gdevpdfb.c) ---------------- */
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/* Return the Y offset for a bitmap character image. */
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int pdf_char_image_y_offset(const gx_device_pdf *pdev, int x, int y, int h);/* gdevpdti.h */
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/* Begin a CharProc for an embedded (bitmap) font. */
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int pdf_begin_char_proc(gx_device_pdf * pdev, int w, int h, int x_width,
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int y_offset, gs_id id, pdf_char_proc_t **ppcp,
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pdf_stream_position_t * ppos); /* gdevpdti.h */
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/* End a CharProc. */
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int pdf_end_char_proc(gx_device_pdf * pdev,
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pdf_stream_position_t * ppos); /* gdevpdti.h */
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/* Put out a reference to an image as a character in an embedded font. */
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int pdf_do_char_image(gx_device_pdf * pdev, const pdf_char_proc_t * pcp,
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const gs_matrix * pimat); /* gdevpdti.h */
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#endif /* gdevpdt_INCLUDED */
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