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#include "mupdf/fitz.h"
fz_text *
fz_new_text(fz_context *ctx, fz_font *font, const fz_matrix *trm, int wmode)
{
fz_text *text;
text = fz_malloc_struct(ctx, fz_text);
text->refs = 1;
text->font = fz_keep_font(ctx, font);
text->trm = *trm;
text->wmode = wmode;
text->len = 0;
text->cap = 0;
text->items = NULL;
return text;
}
fz_text *
fz_keep_text(fz_context *ctx, fz_text *text)
{
return fz_keep_imp(ctx, text, &text->refs);
}
void
fz_drop_text(fz_context *ctx, fz_text *text)
{
if (fz_drop_imp(ctx, text, &text->refs))
{
fz_drop_font(ctx, text->font);
fz_free(ctx, text->items);
fz_free(ctx, text);
}
}
fz_rect *
fz_bound_text(fz_context *ctx, fz_text *text, const fz_stroke_state *stroke, const fz_matrix *ctm, fz_rect *bbox)
{
fz_matrix tm, trm;
fz_rect gbox;
int i;
if (text->len == 0)
{
*bbox = fz_empty_rect;
return bbox;
}
// TODO: stroke state
tm = text->trm;
tm.e = text->items[0].x;
tm.f = text->items[0].y;
fz_concat(&trm, &tm, ctm);
fz_bound_glyph(ctx, text->font, text->items[0].gid, &trm, bbox);
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;
fz_concat(&trm, &tm, ctm);
fz_bound_glyph(ctx, text->font, text->items[i].gid, &trm, &gbox);
bbox->x0 = fz_min(bbox->x0, gbox.x0);
bbox->y0 = fz_min(bbox->y0, gbox.y0);
bbox->x1 = fz_max(bbox->x1, gbox.x1);
bbox->y1 = fz_max(bbox->y1, gbox.y1);
}
}
if (stroke)
fz_adjust_rect_for_stroke(ctx, bbox, stroke, ctm);
/* 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)
{
int new_cap = text->cap;
if (text->len + n < new_cap)
return;
while (text->len + n > new_cap)
new_cap = new_cap + 36;
text->items = fz_resize_array(ctx, text->items, new_cap, sizeof(fz_text_item));
text->cap = new_cap;
}
void
fz_add_text(fz_context *ctx, fz_text *text, int gid, int ucs, float x, float y)
{
if (text->refs != 1)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot modify shared text objects");
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 == '"';
}
static void
do_print_text(FILE *out, fz_text *text, int indent)
{
int i, n;
for (i = 0; i < text->len; i++)
{
for (n = 0; n < indent; n++)
fputc(' ', out);
if (!isxmlmeta(text->items[i].ucs))
fprintf(out, "<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
fprintf(out, "<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);
}
}
void fz_print_text(fz_context *ctx, FILE *out, fz_text *text)
{
do_print_text(out, text, 0);
}
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