/* Copyright (C) 1994, 1995, 1997, 2001 artofcode LLC.  All rights reserved.
  
  This program is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.

  This program 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
  General Public License for more details.

  You should have received a copy of the GNU General Public License along
  with this program; if not, write to the Free Software Foundation, Inc.,
  59 Temple Place, Suite 330, Boston, MA, 02111-1307.

*/

/* $Id: gdevmacxf.c,v 1.1.4.2.2.1 2003/01/17 00:49:00 giles Exp $ */
/* External font (xfont) implementation for Classic/Carbon MacOS. */

#include "gdevmac.h"
#include "gdevmacttf.h"


/* if set to 1, new carbon supported FontManager calls are used */
/* if set to 0, old FM calls that are "not recommended" for carbon are used */
/* for now, we'll set it to 0, as classic and carbon targets don't generate link errors, */
/* but the carbon target would be better built with this macro set to 1 */
/* In the case that it is set, the classic target should link in FontManagerLib */
#define USE_RECOMMENDED_CARBON_FONTMANAGER_CALLS 0



extern const byte gs_map_std_to_iso[256];
extern const byte gs_map_iso_to_std[256];


const byte gs_map_std_to_mac[256] =
{
/*			  x0	x1	  x2	x3	  x4	x5	  x6	x7	  x8	x9	  xA	xB	  xC	xD	  xE	xF	*/
/* 0x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 1x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 2x */	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
/* 3x */	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
/* 4x */	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
/* 5x */	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
/* 6x */	0xD4, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
/* 7x */	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
/* 8x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 9x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* Ax */	0x00, 0xC1, 0xA2, 0xA3, 0xDA, 0xB4, 0xC4, 0xA4, 0xDB, 0x27, 0xD2, 0xC7, 0xDC, 0xDD, 0xDE, 0xDF,
/* Bx */	0x00, 0xD0, 0xA0, 0xE0, 0xE1, 0x00, 0xA6, 0xA5, 0xE2, 0xE3, 0xD3, 0xC8, 0xC9, 0xE4, 0x00, 0xC0,
/* Cx */	0x00, 0x60, 0xAB, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xAC, 0x00, 0xFB, 0xFC, 0x00, 0xFD, 0xFE, 0xFF,
/* Dx */	0xD1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* Ex */	0x00, 0xAE, 0x00, 0xBB, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAF, 0xCE, 0xBC, 0x00, 0x00, 0x00, 0x00,
/* Fx */	0x00, 0xBE, 0x00, 0x00, 0x00, 0xF5, 0x00, 0x00, 0x00, 0xBF, 0xCF, 0xA7, 0x00, 0x00, 0x00, 0x00
};

const byte gs_map_mac_to_std[256] =
{
};

const byte gs_map_iso_to_mac[256] =
{
/*			  x0	x1	  x2	x3	  x4	x5	  x6	x7	  x8	x9	  xA	xB	  xC	xD	  xE	xF	*/
/* 0x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 1x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 2x */	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
/* 3x */	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
/* 4x */	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
/* 5x */	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
/* 6x */	0xD4, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
/* 7x */	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
/* 8x */	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 9x */	0xF5, 0x60, 0xAB, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xAC, 0x00, 0xFB, 0xFC, 0x00, 0xFD, 0xFE, 0xFF,
/* Ax */	0x00, 0xC1, 0xA2, 0xA3, 0xDB, 0xB4, 0x00, 0xA4, 0xAC, 0xA9, 0xBB, 0xC7, 0xC2, 0x2D, 0xA8, 0xF8,
/* Bx */	0xA1, 0xB1, 0x00, 0x00, 0xAB, 0xB5, 0xA6, 0xE1, 0xFC, 0x00, 0xBC, 0xC8, 0x00, 0x00, 0x00, 0xC0,
/* Cx */	0xCB, 0xE7, 0xE5, 0xCC, 0x80, 0x81, 0xAE, 0x82, 0xE9, 0x83, 0xE6, 0xE8, 0xEA, 0xED, 0xEB, 0xEC,
/* Dx */	0x00, 0x84, 0xF1, 0xEE, 0xEF, 0xCD, 0x85, 0x00, 0xAF, 0xF4, 0xF2, 0xF3, 0x86, 0x00, 0x00, 0xA7,
/* Ex */	0x88, 0x87, 0x89, 0x8B, 0x8A, 0x8C, 0xBE, 0x8D, 0x8F, 0x8E, 0x90, 0x91, 0x93, 0x92, 0x94, 0x95,
/* Fx */	0x00, 0x96, 0x98, 0x97, 0x99, 0x9B, 0x9A, 0xD6, 0xBF, 0x9D, 0x9C, 0x9E, 0x9F, 0x00, 0x00, 0xD8
};

const byte gs_map_mac_to_iso[256] =
{
};





/* The xfont procedure record. */

private const gx_xfont_procs mac_xfont_procs =
{
    mac_lookup_font,
    mac_char_xglyph,
    mac_char_metrics,
    mac_render_char,
    mac_release
};


gs_private_st_dev_ptrs1(st_mac_xfont, mac_xfont, "mac_xfont", mac_xfont_enum_ptrs,
						mac_xfont_reloc_ptrs, dev);





/* Return the xfont procedure record. */

const gx_xfont_procs *
mac_get_xfont_procs(gx_device *dev)
{
#pragma unused(dev)
    return &mac_xfont_procs;
}



/* lookup_font */

private gx_xfont *
mac_lookup_font(gx_device *dev, const byte *fname, uint len,
				int encoding_index, const gs_uid *puid,
				const gs_matrix *pmat, gs_memory_t *mem)
{
#pragma unused(encoding_index,puid)
	mac_xfont		*macxf;
	
	CGrafPort		*currentPort;
	int				txFont, txSize, txMode;
	StyleField		txFace;
	Fixed			spExtra;
	
	/* are XFonts enabled? */
	if (((gx_device_macos*) dev)->useXFonts == false)
		return NULL;
	
	/* we can handle only requests from these encodings */
	if (encoding_index != ENCODING_INDEX_MACROMAN && encoding_index != ENCODING_INDEX_ISOLATIN1 &&
			encoding_index != ENCODING_INDEX_STANDARD)
		return NULL;
	
	/* Don't render very small fonts */
	if (fabs(pmat->xx * 1000.0) < 3.0)
		return NULL;
	
	/* Only handle simple cases for now (no transformations). */
	if (fabs(pmat->xy) > 0.0001 || fabs(pmat->yx) > 0.0001 || pmat->xx <= 0)
		return NULL;
	
	/* allocate memory for gx_xfont */
	macxf = gs_alloc_struct(mem, mac_xfont, &st_mac_xfont, "mac_lookup_font");
	if (macxf == NULL) {
		return NULL;
	}
	
	/* set default values */
	macxf->common.procs = &mac_xfont_procs;
	macxf->dev = dev;
	
	/* find the specified font */
	mac_find_font_family(fname, len, &(macxf->fontID), &(macxf->fontFace));
	
	/* no font found */
	if (macxf->fontID == 0)
		return NULL;

	FMGetFontFamilyName(macxf->fontID, macxf->fontName);
	macxf->fontSize = (short)(pmat->xx * 1000.0);
	macxf->fontEncoding = mac_get_font_encoding(macxf);
	
	/* we can handle only fonts with these encodings for now (all original Mac fonts have MacRoman encoding!) */
	if (macxf->fontEncoding != ENCODING_INDEX_MACROMAN && macxf->fontEncoding != ENCODING_INDEX_ISOLATIN1)
		return NULL;
	
	/* get font metrics */
	
	/* save current GrafPort's font information */
	GetPort(&((GrafPort*) currentPort));
	txFont  = currentPort->txFont;
	txSize  = currentPort->txSize;
	txFace  = currentPort->txFace;
	txMode  = currentPort->txMode;
	spExtra = currentPort->spExtra;
	
	/* set values for measuring */
	TextFont(macxf->fontID);
	TextSize(macxf->fontSize);
	TextFace(macxf->fontFace);
	TextMode(srcOr);
	SpaceExtra(0);
	
	/* measure font */
	FontMetrics(&(macxf->fontMetrics));
	
	/* restore current GrafPort's font information */
	currentPort->txFont  = txFont;
	currentPort->txSize  = txSize;
	currentPort->txFace  = txFace;
	currentPort->txMode  = txMode;
	currentPort->spExtra = spExtra;
	
	return (gx_xfont*) macxf;
}



/* char_xglyph */

private gx_xglyph
mac_char_xglyph(gx_xfont *xf, gs_char chr, int encoding_index,
				gs_glyph glyph, gs_proc_glyph_name_t glyph_name_proc)
{
#pragma unused(glyph_name_proc,glyph)
	mac_xfont			* macxf = (mac_xfont*) xf;
	
	/* can't look up names yet */
	if (chr == gs_no_char)
		return gx_no_xglyph;
	
	if (macxf->fontEncoding == ENCODING_INDEX_MACROMAN) {
		switch (encoding_index) {
			case ENCODING_INDEX_MACROMAN:	return chr;
			case ENCODING_INDEX_STANDARD:	return gs_map_std_to_mac[chr];
			case ENCODING_INDEX_ISOLATIN1:	return gs_map_iso_to_mac[chr];
		}
	} else if (macxf->fontEncoding == ENCODING_INDEX_ISOLATIN1) {
		switch (encoding_index) {
			case ENCODING_INDEX_MACROMAN:	return gs_map_mac_to_iso[chr];
			case ENCODING_INDEX_STANDARD:	return gs_map_std_to_iso[chr];
			case ENCODING_INDEX_ISOLATIN1:	return chr;
		}
	}
	
	return gx_no_xglyph;
}



/* char_metrics */

private int
mac_char_metrics(gx_xfont *xf, gx_xglyph xg, int wmode,
				 gs_point *pwidth, gs_int_rect *pbbox)
{
#pragma unused(xg)
	mac_xfont			* macxf = (mac_xfont*) xf;
	
	if (wmode != 0)
		return gs_error_undefined;
	
	pbbox->p.x = 0;
	pbbox->q.x = Fix2Long(macxf->fontMetrics.widMax);
	pbbox->p.y = -Fix2Long(macxf->fontMetrics.ascent);
	pbbox->q.y = Fix2Long(macxf->fontMetrics.descent);
	pwidth->x = pbbox->q.x;
	pwidth->y = 0.0;
	
	return 0;
}



/* render_char */

private int
mac_render_char(gx_xfont *xf, gx_xglyph xg, gx_device *dev,
				int xo, int yo, gx_color_index color, int required)
{
#pragma unused(dev,required)
	mac_xfont			* macxf = (mac_xfont*) xf;
	gx_device_macos		* mdev = (gx_device_macos*) macxf->dev;
	
	Str255				character;
	int					i, found;
	
	CheckMem(10*1024, 100*1024);
	ResetPage();
	
	character[0] = 1;
	character[1] = xg;
	
	GSSetFgCol(macxf->dev, mdev->currPicPos, color);
	
	found = 0;
	for (i=0; i<mdev->numUsedFonts; i++)
		if (mdev->usedFontIDs[i] == macxf->fontID)	found = 1;
	
	if (!found) {
		mdev->usedFontIDs[mdev->numUsedFonts++] = macxf->fontID;
		PICT_fontName(mdev->currPicPos, macxf->fontID, macxf->fontName);
	}
	if (mdev->lastFontID != macxf->fontID) {
		PICT_TxFont(mdev->currPicPos, macxf->fontID);
		mdev->lastFontID = macxf->fontID;
	}
	if (mdev->lastFontSize != macxf->fontSize) {
		PICT_TxSize(mdev->currPicPos, macxf->fontSize);
		mdev->lastFontSize = macxf->fontSize;
	}
	if (mdev->lastFontFace != macxf->fontFace) {
		PICT_TxFace(mdev->currPicPos, macxf->fontFace);
		mdev->lastFontFace = macxf->fontFace;
	}
	PICT_LongText(mdev->currPicPos, xo, yo, character);
	PICT_OpEndPicGoOn(mdev->currPicPos);
	
	return 0;
}



/* release */

private int
mac_release(gx_xfont *xf, gs_memory_t *mem)
{
	if (mem != NULL)
		gs_free_object(mem, xf, "mac_release");
	
	return 0;
}



/* try to extract font family and style from name and find a suitable font */

private void
mac_find_font_family(ConstStringPtr fname, int len, FMFontFamily *fontID, FMFontStyle *fontFace)
{
	char			fontNameStr[512];
	char			*fontFamilyName;
	char			*fontStyleName;
	int				i;
	
	*fontID   = 0;
	*fontFace = 0;
	
	/* first try the full fontname */
	fontNameStr[0] = len;
	memcpy(fontNameStr+1, fname, len);
	*fontID = FMGetFontFamilyFromName((StringPtr) fontNameStr);
	if (*fontID > 0)	return;
	
	/* try to find the font without the dashes */
	fontNameStr[0] = len;
	memcpy(fontNameStr+1, fname, len);
	for (i=1; i<=len; i++)
		if (fontNameStr[i] == '-')	fontNameStr[i] = ' ';
	*fontID = FMGetFontFamilyFromName((StringPtr) fontNameStr);
	if (*fontID > 0)	return;
	
	/* we should read some default fontname mappings from a file here */
	if (*fontID > 0)	return;
	
	/* try to extract font basename and style names */
	memcpy(fontNameStr, fname, len);
	fontNameStr[len] = 0;
	
	fontFamilyName = strtok(fontNameStr, "- ");
	while ((fontStyleName = strtok(NULL, "- ")) != NULL) {
		if (!strcmp(fontStyleName, "Italic") || !strcmp(fontStyleName, "Oblique") || !strcmp(fontStyleName, "It"))
			*fontFace |= italic;
		if (!strcmp(fontStyleName, "Bold") || !strcmp(fontStyleName, "Bd"))
			*fontFace |= bold;
		if (!strcmp(fontStyleName, "Narrow") || !strcmp(fontStyleName, "Condensed"))
			*fontFace |= condense;
	}
	
	if (fontFamilyName == NULL) {
		return;
	} else {
		Str255	fontName;
		
		fontName[0] = strlen(fontFamilyName);
		strcpy((char*)(fontName+1), fontFamilyName);
		*fontID = FMGetFontFamilyFromName((StringPtr) fontNameStr);
		if (*fontID > 0) return;
	}
}



/* extract a font's platform id (encoding) */

private int
mac_get_font_encoding(mac_xfont *macxf)
{
	int			encoding = ENCODING_INDEX_UNKNOWN;
	ResType		resType;
	short		resID;
	
	mac_get_font_resource(macxf, &resType, &resID);
	
	if (resType == 'sfnt') {
		Handle				fontHandle;
		TTFontDir			*fontDir;
		TTFontNamingTable	*fontNamingTable;
		int					i;
		
		/* load resource */
		if ((fontHandle = GetResource(resType, resID)) == NULL)
			return encoding;
		HLock(fontHandle);
		
		/* walk through the font directory and find the font naming table */
		fontDir = (TTFontDir*) *fontHandle;
		if (fontDir != NULL && fontDir->version == 'true') {
			for (i=0; i<fontDir->numTables; i++) {
				if (fontDir->components[i].tagName == TTF_FONT_NAMING_TABLE) {
					fontNamingTable = (TTFontNamingTable*) ((long)(fontDir->components[i].offset) + (long)fontDir);
					switch (fontNamingTable->platformID) {
						//case 0:		encoding = ENCODING_INDEX_STANDARD;		break;	/* Unicode */
						case 1:		encoding = ENCODING_INDEX_MACROMAN;		break;
						case 2:		encoding = ENCODING_INDEX_ISOLATIN1;	break;
						//case 3:		encoding = ENCODING_INDEX_WINANSI;		break;
					}
					break;
				}
			}
		}
		
		HUnlock(fontHandle);
		ReleaseResource(fontHandle);
	}
	
	return encoding;
}



/* get a handle to a font resource */

private void
mac_get_font_resource(mac_xfont *macxf, ResType *resType, short *resID)
{
	FMInput		fontInput = {0, 0, 0, true, 0, {1,1}, {1,1}};
	FMOutputPtr	fontOutput;
	
	Str255		resName;
	
	fontInput.family	= macxf->fontID;
	fontInput.size		= macxf->fontSize;
	fontInput.face		= macxf->fontFace;

	fontOutput = FMSwapFont(&fontInput);
	
	if (fontOutput == NULL || fontOutput->fontHandle == NULL)
		return;
	
	GetResInfo(fontOutput->fontHandle, resID, resType, resName);
}



#if !USE_RECOMMENDED_CARBON_FONTMANAGER_CALLS
/* wrap the old Classic MacOS font manager calls to fake support for the
   new FontManager API on older systems */

OSStatus
FMGetFontFamilyName(FMFontFamily fontFamilyID, Str255 fontNameStr)
{
	GetFontName(fontFamilyID, fontNameStr);
	return noErr;
}

FMFontFamily
FMGetFontFamilyFromName(ConstStr255Param fontNameStr)
{
    int	fontID;
    GetFNum(fontNameStr, &fontID);

    return (FMFontFamily)fontID;
}
#endif