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1
#include "mupdf/pdf.h"

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void

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pdf_set_font_wmode(fz_context *ctx, pdf_font_desc *font, int wmode)

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{

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	font->wmode = wmode;

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}

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void

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pdf_set_default_hmtx(fz_context *ctx, pdf_font_desc *font, int w)

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{

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	font->dhmtx.w = w;

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}

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void

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pdf_set_default_vmtx(fz_context *ctx, pdf_font_desc *font, int y, int w)

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{

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	font->dvmtx.y = y;

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	font->dvmtx.w = w;

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}

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void

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pdf_add_hmtx(fz_context *ctx, pdf_font_desc *font, int lo, int hi, int w)

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{

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	if (font->hmtx_len + 1 >= font->hmtx_cap)

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	{

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		int new_cap = font->hmtx_cap + 16;

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		font->hmtx = fz_resize_array(ctx, font->hmtx, new_cap, sizeof(pdf_hmtx));

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		font->hmtx_cap = new_cap;

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	}

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	font->hmtx[font->hmtx_len].lo = lo;

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	font->hmtx[font->hmtx_len].hi = hi;

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	font->hmtx[font->hmtx_len].w = w;

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	font->hmtx_len++;

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}

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void

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pdf_add_vmtx(fz_context *ctx, pdf_font_desc *font, int lo, int hi, int x, int y, int w)

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{

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	if (font->vmtx_len + 1 >= font->vmtx_cap)

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	{

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		int new_cap = font->vmtx_cap + 16;

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		font->vmtx = fz_resize_array(ctx, font->vmtx, new_cap, sizeof(pdf_vmtx));

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		font->vmtx_cap = new_cap;

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	}

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	font->vmtx[font->vmtx_len].lo = lo;

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	font->vmtx[font->vmtx_len].hi = hi;

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	font->vmtx[font->vmtx_len].x = x;

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	font->vmtx[font->vmtx_len].y = y;

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	font->vmtx[font->vmtx_len].w = w;

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	font->vmtx_len++;

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}

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static int cmph(const void *a0, const void *b0)

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{

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	pdf_hmtx *a = (pdf_hmtx*)a0;

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	pdf_hmtx *b = (pdf_hmtx*)b0;

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	return a->lo - b->lo;

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}

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static int cmpv(const void *a0, const void *b0)

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{

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	pdf_vmtx *a = (pdf_vmtx*)a0;

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	pdf_vmtx *b = (pdf_vmtx*)b0;

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	return a->lo - b->lo;

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}

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void

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pdf_end_hmtx(fz_context *ctx, pdf_font_desc *font)

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{

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	if (!font->hmtx)

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		return;

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	qsort(font->hmtx, font->hmtx_len, sizeof(pdf_hmtx), cmph);

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	font->size += font->hmtx_cap * sizeof(pdf_hmtx);

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}

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void

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pdf_end_vmtx(fz_context *ctx, pdf_font_desc *font)

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{

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	if (!font->vmtx)

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		return;

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	qsort(font->vmtx, font->vmtx_len, sizeof(pdf_vmtx), cmpv);

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	font->size += font->vmtx_cap * sizeof(pdf_vmtx);

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}

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pdf_hmtx

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pdf_lookup_hmtx(fz_context *ctx, pdf_font_desc *font, int cid)

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{

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	int l = 0;

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	int r = font->hmtx_len - 1;

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	int m;

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	if (!font->hmtx)

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		goto notfound;

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	while (l <= r)

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	{

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		m = (l + r) >> 1;

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		if (cid < font->hmtx[m].lo)

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			r = m - 1;

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		else if (cid > font->hmtx[m].hi)

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			l = m + 1;

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		else

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			return font->hmtx[m];

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	}

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notfound:

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	return font->dhmtx;

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}

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pdf_vmtx

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pdf_lookup_vmtx(fz_context *ctx, pdf_font_desc *font, int cid)

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{

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	pdf_hmtx h;

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	pdf_vmtx v;

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	int l = 0;

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	int r = font->vmtx_len - 1;

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	int m;

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	if (!font->vmtx)

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		goto notfound;

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	while (l <= r)

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	{

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		m = (l + r) >> 1;

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		if (cid < font->vmtx[m].lo)

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			r = m - 1;

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		else if (cid > font->vmtx[m].hi)

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			l = m + 1;

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		else

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			return font->vmtx[m];

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	}

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notfound:

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	h = pdf_lookup_hmtx(ctx, font, cid);

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	v = font->dvmtx;

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	v.x = h.w / 2;

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	return v;

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}

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