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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2017-xxxx
SPDX-License-Identifier:	BSD-3-Clause


%%	module

#include "dk4conf.h"

#if	DK4_HAVE_MATH_H
#ifndef	MATH_H_INCLUDED
#if	DK4_ON_WINDOWS
#ifndef	_USE_MATH_DEFINES
#define	_USE_MATH_DEFINES 1
#endif
#endif
#include <math.h>
#define	MATH_H_INCLUDED 1
#endif
#endif

#ifndef	DK4UFI_H_INCLUDED
#include "dk4ufi.h"
#endif

#ifndef	DK4BIF_H_INCLUDED
#include "dk4bif.h"
#endif

#ifndef	DK4GRA_H_INCLUDED
#include "dk4gra.h"
#endif

#ifndef	GRA_H_INCLUDED
#include "gra.h"
#endif

#if DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif


$!trace-include



/**	Constant text fragments for PGF output.
*/
static const char * const	dk4gra_pgf_img_kw[] = {
/*  0 */	"\\begin{pgfscope}\n",
/*  1 */	"\\end{pgfscope}\n",
/*  2 */	"\\pgftransformshift{\\pgfpoint{",
/*  3 */	"bp}{",
/*  4 */	"bp}}\n",
/*  5 */	"\\pgftransformrotate{",
/*  6 */	"}\n",
/*  7 */	"\\pgftransformxscale{",
/*  8 */	"\\pgftransformyscale{",
/*  9 */	"}\n",
/* 10 */	"\\pgftext[left,base,at=\\pgfpointorigin]{\\pgfuseimage{PPPTim",
/* 11 */	"}}\n",
NULL
};



int
dk4gra_pgf_bif_fig_image(
	dk4_gra_t			*gra,
	double				*cotra,
	dk4_bif_t			*bif,
	const dkChar		*fn,
	int					 ifl,
	dk4_er_t			*erp
)
{
	dk4_gra_pgf_img_no_t	 to;			/* Test object */
	dk4_gra_pgf_img_no_t	*tptr	= NULL;	/* Search existing or add new */
	dk4_gra_pgf_page_t		*bptr	= NULL;	/* Current page */
	int						 back	= 0;
	$? "+ dk4gra_pgf_bif_fig_image \"%!ds\"", TR_STR(fn)
#if	DK4_USE_ASSERT
	assert(NULL != gra);
	assert(NULL != bif);
	assert(NULL != cotra);
	assert(NULL != fn);
#endif
	/*
		Check arguments
	*/
	if ((NULL == gra) || (NULL == cotra) || (NULL == bif) || (NULL == fn)) {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
		goto finished;
	}
	bptr = (dk4_gra_pgf_page_t *)(gra->curpg);
	if (NULL == bptr->memstrm) {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
		goto finished;
	}
	/*	Check image file types, pdflatex can handle JPEG and PNG only
	*/
	switch (dk4bif_get_image_type(bif)) {
		case DK4_BIF_TYPE_NETPBM : case DK4_BIF_TYPE_TIFF : {
			dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
			goto finished;
		} break;
	}
	to.fn = (dkChar *)fn;
	to.hufi = dk4ufi_get(&(to.ufi), fn, erp);
	to.intp = ((0 != (DK4_GRA_IMG_FLAG_INTERPOLATION & ifl)) ? (1) : (0));
	to.imgno = gra->out.pgf.n_images;
	if (
		(0 != (DK4_GRA_IMG_FLAG_DCT & ifl))
		&& (DK4_BIF_TYPE_JPEG == bif->imgtype)
	) {
		if (0 == (DK4_GRA_IMG_FLAG_DCT_INTERPOLATION & ifl)) {
			to.intp = 0;
		}
	}
	tptr = (dk4_gra_pgf_img_no_t *)dk4sto_it_find_like(
		gra->out.pgf.i_images, &to, 0
	);
	if (NULL == tptr) {
		if (SIZE_MAX > gra->out.pgf.n_images) {
			tptr = dk4gra_pgf_img_open(
				fn, gra->out.pgf.n_images, to.intp, erp
			);
			if (NULL != tptr) {
				gra->out.pgf.n_images += (size_t)1U;
				if (0 != dk4sto_add(gra->out.pgf.s_images, tptr, erp)) {
					if (0 == dk4sto_add(gra->out.pgf.s_imagno, tptr, erp)) {
						tptr = NULL;
					}
				}
				else {
					dk4gra_pgf_img_close(tptr);
				}
			}
		}
		else {
			dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
		}
	}
	if (NULL != tptr) {
		back = 1;
		/* begin pgfscope */
		dk4gratool_stream_string(
			bptr->memstrm, dk4gra_pgf_img_kw[0], &back, erp
		);
		/* pgftransformshift */
		if (
			(DK4_GRA_EPSILON_COORDINATES < fabs(cotra[0]))
			|| (DK4_GRA_EPSILON_COORDINATES < fabs(cotra[1]))
		)
		{
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[2], &back, erp
			);
			dk4gratool_stream_double(bptr->memstrm, cotra[0], &back, erp);
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[3], &back, erp
			);
			dk4gratool_stream_double(bptr->memstrm, cotra[1], &back, erp);
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[4], &back, erp
			);
		}
		/* pgftransformrotate */
		if (DK4_GRA_EPSILON_COORDINATES < fabs(cotra[2])) {
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[5], &back, erp
			);
			dk4gratool_stream_double(bptr->memstrm, cotra[2], &back, erp);
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[6], &back, erp
			);
		}
		/* pgftransformxscale */
		if (DK4_GRA_EPSILON_COORDINATES < fabs(cotra[3] - 1.0)) {
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[7], &back, erp
			);
			dk4gratool_stream_double(bptr->memstrm, cotra[3], &back, erp);
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[9], &back, erp
			);
		}
		/* pgftransformyscale */
		if (DK4_GRA_EPSILON_COORDINATES < fabs(cotra[4] - 1.0)) {
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[8], &back, erp
			);
			dk4gratool_stream_double(bptr->memstrm, cotra[4], &back, erp);
			dk4gratool_stream_string(
				bptr->memstrm, dk4gra_pgf_img_kw[9], &back, erp
			);
		}
		/* show image */
		dk4gratool_stream_string(
			bptr->memstrm, dk4gra_pgf_img_kw[10], &back, erp
		);
		dk4gratool_stream_num_alpha(bptr->memstrm, tptr->imgno, &back, erp);
		dk4gratool_stream_string(
			bptr->memstrm, dk4gra_pgf_img_kw[11], &back, erp
		);
		/* end pgfscope */
		dk4gratool_stream_string(
			bptr->memstrm, dk4gra_pgf_img_kw[1], &back, erp
		);
	}

	finished:
	$? "- dk4gra_pgf_bif_fig_image %d", back
	return back;
}

/* vim: set ai sw=4 ts=4 : */