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#include "fitz.h"
fz_text *
fz_new_text(fz_context *ctx, fz_font *font, fz_matrix trm, int wmode)
{
fz_text *text;
text = fz_malloc_struct(ctx, fz_text);
text->font = fz_keep_font(ctx, font);
text->trm = trm;
text->wmode = wmode;
text->len = 0;
text->cap = 0;
text->items = NULL;
return text;
}
void
fz_free_text(fz_context *ctx, fz_text *text)
{
if (text != NULL)
{
fz_drop_font(ctx, text->font);
fz_free(ctx, text->items);
}
fz_free(ctx, text);
}
fz_text *
fz_clone_text(fz_context *ctx, fz_text *old)
{
fz_text *text;
text = fz_malloc_struct(ctx, fz_text);
text->len = old->len;
fz_try(ctx)
{
text->items = fz_malloc_array(ctx, text->len, sizeof(fz_text_item));
}
fz_catch(ctx)
{
fz_free(ctx, text);
fz_rethrow(ctx);
}
memcpy(text->items, old->items, text->len * sizeof(fz_text_item));
text->font = fz_keep_font(ctx, old->font);
text->trm = old->trm;
text->wmode = old->wmode;
text->cap = text->len;
return text;
}
fz_rect
fz_bound_text(fz_context *ctx, fz_text *text, fz_matrix ctm)
{
fz_matrix tm, trm;
fz_rect bbox;
fz_rect gbox;
int i;
if (text->len == 0)
return fz_empty_rect;
// TODO: stroke state
tm = text->trm;
tm.e = text->items[0].x;
tm.f = text->items[0].y;
trm = fz_concat(tm, ctm);
bbox = fz_bound_glyph(ctx, text->font, text->items[0].gid, trm);
for (i = 1; i < text->len; i++)
{
if (text->items[i].gid >= 0)
{
tm.e = text->items[i].x;
tm.f = text->items[i].y;
trm = fz_concat(tm, ctm);
gbox = fz_bound_glyph(ctx, text->font, text->items[i].gid, trm);
bbox.x0 = MIN(bbox.x0, gbox.x0);
bbox.y0 = MIN(bbox.y0, gbox.y0);
bbox.x1 = MAX(bbox.x1, gbox.x1);
bbox.y1 = MAX(bbox.y1, gbox.y1);
}
}
/* Compensate for the glyph cache limited positioning precision */
bbox.x0 -= 1;
bbox.y0 -= 1;
bbox.x1 += 1;
bbox.y1 += 1;
return bbox;
}
static void
fz_grow_text(fz_context *ctx, fz_text *text, int n)
{
if (text->len + n < text->cap)
return;
while (text->len + n > text->cap)
text->cap = text->cap + 36;
text->items = fz_resize_array(ctx, text->items, text->cap, sizeof(fz_text_item));
}
void
fz_add_text(fz_context *ctx, fz_text *text, int gid, int ucs, float x, float y)
{
fz_grow_text(ctx, text, 1);
text->items[text->len].ucs = ucs;
text->items[text->len].gid = gid;
text->items[text->len].x = x;
text->items[text->len].y = y;
text->len++;
}
static int isxmlmeta(int c)
{
return c < 32 || c >= 128 || c == '&' || c == '<' || c == '>' || c == '\'' || c == '"';
}
void fz_debug_text(fz_context *ctx, fz_text *text, int indent)
{
int i, n;
for (i = 0; i < text->len; i++)
{
for (n = 0; n < indent; n++)
putchar(' ');
if (!isxmlmeta(text->items[i].ucs))
printf("<g ucs=\"%c\" gid=\"%d\" x=\"%g\" y=\"%g\" />\n",
text->items[i].ucs, text->items[i].gid, text->items[i].x, text->items[i].y);
else
printf("<g ucs=\"U+%04X\" gid=\"%d\" x=\"%g\" y=\"%g\" />\n",
text->items[i].ucs, text->items[i].gid, text->items[i].x, text->items[i].y);
}
}
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