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#include <fitz.h>
fz_error *
fz_newtextnode(fz_textnode **textp, fz_font *font)
{
fz_textnode *text;
text = fz_malloc(sizeof(fz_textnode));
if (!text)
return fz_outofmem;
fz_initnode((fz_node*)text, FZ_NTEXT);
text->font = fz_keepfont(font);
text->trm = fz_identity();
text->len = 0;
text->cap = 0;
text->els = nil;
*textp = text;
return nil;
}
fz_error *
fz_clonetextnode(fz_textnode **textp, fz_textnode *oldtext)
{
fz_textnode *text;
text = *textp = fz_malloc(sizeof(fz_textnode));
if (!text)
return fz_outofmem;
fz_initnode((fz_node*)text, FZ_NTEXT);
text->font = fz_keepfont(oldtext->font);
text->trm = oldtext->trm;
text->len = oldtext->len;
text->cap = oldtext->len;
text->els = nil;
text->els = fz_malloc(sizeof(fz_textel) * text->len);
if (!text->els)
{
fz_dropfont(text->font);
fz_free(text);
return fz_outofmem;
}
memcpy(text->els, oldtext->els, sizeof(fz_textel) * text->len);
*textp = text;
return nil;
}
void
fz_droptextnode(fz_textnode *text)
{
fz_dropfont(text->font);
fz_free(text->els);
}
fz_rect
fz_boundtextnode(fz_textnode *text, fz_matrix ctm)
{
fz_matrix trm;
fz_rect bbox;
fz_rect fbox;
int i;
if (text->len == 0)
return fz_emptyrect;
/* find bbox of glyph origins in ctm space */
bbox.min.x = bbox.max.x = text->els[0].x;
bbox.min.y = bbox.max.y = text->els[0].y;
for (i = 1; i < text->len; i++)
{
bbox.min.x = MIN(bbox.min.x, text->els[i].x);
bbox.min.y = MIN(bbox.min.y, text->els[i].y);
bbox.max.x = MAX(bbox.max.x, text->els[i].x);
bbox.max.y = MAX(bbox.max.y, text->els[i].y);
}
bbox = fz_transformaabb(ctm, bbox);
/* find bbox of font in trm * ctm space */
trm = fz_concat(text->trm, ctm);
trm.e = 0;
trm.f = 0;
fbox.min.x = text->font->bbox.min.x * 0.001;
fbox.min.y = text->font->bbox.min.y * 0.001;
fbox.max.x = text->font->bbox.max.x * 0.001;
fbox.max.y = text->font->bbox.max.y * 0.001;
fbox = fz_transformaabb(trm, fbox);
/* expand glyph origin bbox by font bbox */
bbox.min.x += fbox.min.x;
bbox.min.y += fbox.min.y;
bbox.max.x += fbox.max.x;
bbox.max.y += fbox.max.y;
return bbox;
}
static fz_error *
growtext(fz_textnode *text, int n)
{
int newcap;
fz_textel *newels;
while (text->len + n > text->cap)
{
newcap = text->cap + 36;
newels = fz_realloc(text->els, sizeof (fz_textel) * newcap);
if (!newels)
return fz_outofmem;
text->cap = newcap;
text->els = newels;
}
return nil;
}
fz_error *
fz_addtext(fz_textnode *text, int cid, float x, float y)
{
if (growtext(text, 1) != nil)
return fz_outofmem;
text->els[text->len].cid = cid;
text->els[text->len].x = x;
text->els[text->len].y = y;
text->len++;
return nil;
}
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