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#include "fitz_base.h"
#include "fitz_tree.h"
fz_error
fz_newtextnode(fz_textnode **textp, fz_font *font)
{
fz_textnode *text;
text = fz_malloc(sizeof(fz_textnode));
if (!text)
return fz_rethrow(-1, "out of memory");
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 fz_okay;
}
fz_error
fz_clonetextnode(fz_textnode **textp, fz_textnode *oldtext)
{
fz_textnode *text;
text = *textp = fz_malloc(sizeof(fz_textnode));
if (!text)
return fz_rethrow(-1, "out of memory");
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_rethrow(-1, "out of memory");
}
memcpy(text->els, oldtext->els, sizeof(fz_textel) * text->len);
*textp = text;
return fz_okay;
}
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.x0 = bbox.x1 = text->els[0].x;
bbox.y0 = bbox.y1 = text->els[0].y;
for (i = 1; i < text->len; i++)
{
bbox.x0 = MIN(bbox.x0, text->els[i].x);
bbox.y0 = MIN(bbox.y0, text->els[i].y);
bbox.x1 = MAX(bbox.x1, text->els[i].x);
bbox.y1 = MAX(bbox.y1, 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.x0 = text->font->bbox.x0 * 0.001;
fbox.y0 = text->font->bbox.y0 * 0.001;
fbox.x1 = text->font->bbox.x1 * 0.001;
fbox.y1 = text->font->bbox.y1 * 0.001;
fbox = fz_transformaabb(trm, fbox);
/* expand glyph origin bbox by font bbox */
bbox.x0 += fbox.x0;
bbox.y0 += fbox.y0;
bbox.x1 += fbox.x1;
bbox.y1 += fbox.y1;
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_rethrow(-1, "out of memory");
text->cap = newcap;
text->els = newels;
}
return fz_okay;
}
fz_error
fz_addtext(fz_textnode *text, int gid, int ucs, float x, float y)
{
if (growtext(text, 1) != nil)
return fz_rethrow(-1, "out of memory");
text->els[text->len].ucs = ucs;
text->els[text->len].gid = gid;
text->els[text->len].x = x;
text->els[text->len].y = y;
text->len++;
return fz_okay;
}
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