static void
fz_text_extract_span(fz_context *ctx, fz_text_span **last, fz_text *text, fz_matrix ctm, fz_point *pen)
{
fz_font *font = text->font;
FT_Face face = font->ft_face;
fz_matrix tm = text->trm;
fz_matrix trm;
float size;
float adv;
fz_rect rect;
fz_point dir, ndir;
fz_point delta, ndelta;
float dist, dot;
float ascender = 1;
float descender = 0;
int multi;
int i, err;
if (text->len == 0)
return;
fz_lock(ctx, FZ_LOCK_FREETYPE);
if (font->ft_face)
{
err = FT_Set_Char_Size(font->ft_face, 64, 64, 72, 72);
if (err)
fz_warn(ctx, "freetype set character size: %s", ft_error_string(err));
ascender = (float)face->ascender / face->units_per_EM;
descender = (float)face->descender / face->units_per_EM;
}
rect = fz_empty_rect;
if (text->wmode == 0)
{
dir.x = 1;
dir.y = 0;
}
else
{
dir.x = 0;
dir.y = 1;
}
tm.e = 0;
tm.f = 0;
trm = fz_concat(tm, ctm);
dir = fz_transform_vector(trm, dir);
dist = sqrtf(dir.x * dir.x + dir.y * dir.y);
ndir.x = dir.x / dist;
ndir.y = dir.y / dist;
size = fz_matrix_expansion(trm);
multi = 1;
for (i = 0; i < text->len; i++)
{
if (text->items[i].gid < 0)
{
fz_add_text_char(ctx, last, font, size, text->wmode, text->items[i].ucs, fz_round_rect(rect));
multi ++;
fz_divide_text_chars(last, multi, fz_round_rect(rect));
continue;
}
multi = 1;
/* Calculate new pen location and delta */
tm.e = text->items[i].x;
tm.f = text->items[i].y;
trm = fz_concat(tm, ctm);
delta.x = pen->x - trm.e;
delta.y = pen->y - trm.f;
if (pen->x == -1 && pen->y == -1)
delta.x = delta.y = 0;
dist = sqrtf(delta.x * delta.x + delta.y * delta.y);
/* Add space and newlines based on pen movement */
if (dist > 0)
{
ndelta.x = delta.x / dist;
ndelta.y = delta.y / dist;
dot = ndelta.x * ndir.x + ndelta.y * ndir.y;
if (dist > size * LINE_DIST)
{
fz_add_text_newline(ctx, last, font, size, text->wmode);
}
else if (fabsf(dot) > 0.95f && dist > size * SPACE_DIST)
{
if ((*last)->len > 0 && (*last)->text[(*last)->len - 1].c != ' ')
{
fz_rect spacerect;
spacerect.x0 = -0.2f;
spacerect.y0 = 0;
spacerect.x1 = 0;
spacerect.y1 = 1;
spacerect = fz_transform_rect(trm, spacerect);
fz_add_text_char(ctx, last, font, size, text->wmode, ' ', fz_round_rect(spacerect));
}
}
}
/* Calculate bounding box and new pen position based on font metrics */
if (font->ft_face)
{
FT_Fixed ftadv = 0;
int mask = FT_LOAD_NO_BITMAP | FT_LOAD_NO_HINTING | FT_LOAD_IGNORE_TRANSFORM;
/* TODO: freetype returns broken vertical metrics */
/* if (text->wmode) mask |= FT_LOAD_VERTICAL_LAYOUT; */
FT_Get_Advance(font->ft_face, text->items[i].gid, mask, &ftadv);
adv = ftadv / 65536.0f;
rect.x0 = 0;
rect.y0 = descender;
rect.x1 = adv;
rect.y1 = ascender;
}
else
{
adv = font->t3widths[text->items[i].gid];
rect.x0 = 0;
rect.y0 = descender;
rect.x1 = adv;
rect.y1 = ascender;
}
rect = fz_transform_rect(trm, rect);
pen->x = trm.e + dir.x * adv;
pen->y = trm.f + dir.y * adv;
fz_add_text_char(ctx, last, font, size, text->wmode, text->items[i].ucs, fz_round_rect(rect));
}
fz_unlock(ctx, FZ_LOCK_FREETYPE);
}
static void
fz_text_extract_span(fz_text_span **last, fz_text *text, fz_matrix ctm, fz_point *pen)
{
// fz_font *font = text->font;
// FT_Face face = font->ft_face;
fz_matrix tm = text->trm;
fz_matrix trm;
float size;
float adv = 0;
fz_rect rect;
fz_point dir, ndir;
fz_point delta, ndelta;
float dist, dot;
float ascender = 1;
float descender = 0;
int multi;
int i;
if (text->len == 0)
return;
rect = fz_empty_rect;
/* SumatraPDF: TODO: make this depend on the per-glyph displacement vector */
if (text->wmode == 0)
{
dir.x = 1;
dir.y = 0;
}
else
{
dir.x = 0;
dir.y = 1;
}
tm.e = 0;
tm.f = 0;
trm = fz_concat(tm, ctm);
dir = fz_transform_vector(trm, dir);
dist = sqrtf(dir.x * dir.x + dir.y * dir.y);
ndir.x = dir.x / dist;
ndir.y = dir.y / dist;
size = fz_matrix_expansion(trm);
multi = 1;
for (i = 0; i < text->len; i++)
{
if (text->items[i].gid < 0)
{
fz_add_text_char(last, size, text->wmode, text->items[i].ucs, fz_round_rect(rect));
multi ++;
fz_divide_text_chars(last, multi, fz_round_rect(rect));
continue;
}
multi = 1;
/* Calculate new pen location and delta */
tm.e = text->items[i].x;
tm.f = text->items[i].y;
trm = fz_concat(tm, ctm);
delta.x = pen->x - trm.e;
delta.y = pen->y - trm.f;
if (pen->x == -1 && pen->y == -1)
delta.x = delta.y = 0;
dist = sqrtf(delta.x * delta.x + delta.y * delta.y);
/* Add space and newlines based on pen movement */
if (dist > 0)
{
ndelta.x = delta.x / dist;
ndelta.y = delta.y / dist;
dot = ndelta.x * ndir.x + ndelta.y * ndir.y;
if (dist > size * LINE_DIST)
{
fz_add_text_newline(last, size, text->wmode);
}
else if (fabsf(dot) > 0.95f && dist > size * SPACE_DIST)
{
if ((*last)->len > 0 && (*last)->text[(*last)->len - 1].c != ' ')
{
fz_rect spacerect;
spacerect.x0 = -0.2f;
spacerect.y0 = 0;
spacerect.x1 = 0;
spacerect.y1 = 1;
spacerect = fz_transform_rect(trm, spacerect);
fz_add_text_char(last, size, text->wmode, ' ', fz_round_rect(spacerect));
}
}
}
/* Calculate bounding box and new pen position based on font metrics */
//if (font->ft_face)
//{
// FT_Fixed ftadv = 0;
// int mask = FT_LOAD_NO_BITMAP | FT_LOAD_NO_HINTING | FT_LOAD_IGNORE_TRANSFORM;
// /* TODO: freetype returns broken vertical metrics */
// /* if (text->wmode) mask |= FT_LOAD_VERTICAL_LAYOUT; */
// FT_Get_Advance(font->ft_face, text->items[i].gid, mask, &ftadv);
// adv = ftadv / 65536.0f;
// rect.x0 = 0;
// rect.y0 = descender;
// rect.x1 = adv;
// rect.y1 = ascender;
//}
//else
{
// adv = font->t3widths[text->items[i].gid];
rect.x0 = 0;
rect.y0 = descender;
rect.x1 = adv;
rect.y1 = ascender;
}
rect = fz_transform_rect(trm, rect);
pen->x = trm.e + dir.x * adv;
pen->y = trm.f + dir.y * adv;
fz_add_text_char(last, size, text->wmode, text->items[i].ucs, fz_round_rect(rect));
}
}
