static void
write_comb_string(fz_context *ctx, fz_buffer *buf, const char *a, const char *b, fz_font *font, float cell_w)
{
float gw, pad, carry = 0;
fz_append_byte(ctx, buf, '[');
while (a < b)
{
int c, g;
a += fz_chartorune(&c, a);
c = fz_windows_1252_from_unicode(c);
if (c < 0) c = REPLACEMENT;
g = fz_encode_character(ctx, font, c);
gw = fz_advance_glyph(ctx, font, g, 0) * 1000;
pad = (cell_w - gw) / 2;
fz_append_printf(ctx, buf, "%g", -(carry + pad));
carry = pad;
fz_append_byte(ctx, buf, '(');
if (c == '(' || c == ')' || c == '\\')
fz_append_byte(ctx, buf, '\\');
fz_append_byte(ctx, buf, c);
fz_append_byte(ctx, buf, ')');
}
fz_append_string(ctx, buf, "] TJ\n");
}
/* Helper functions */
static void
pdf_dev_stroke_state(fz_context *ctx, pdf_device *pdev, const fz_stroke_state *stroke_state)
{
gstate *gs = CURRENT_GSTATE(pdev);
if (stroke_state == gs->stroke_state)
return;
if (gs->stroke_state && !memcmp(stroke_state, gs->stroke_state, sizeof(*stroke_state)))
return;
if (!gs->stroke_state || gs->stroke_state->linewidth != stroke_state->linewidth)
{
fz_append_printf(ctx, gs->buf, "%g w\n", stroke_state->linewidth);
}
if (!gs->stroke_state || gs->stroke_state->start_cap != stroke_state->start_cap)
{
int cap = stroke_state->start_cap;
/* FIXME: Triangle caps aren't supported in pdf */
if (cap == FZ_LINECAP_TRIANGLE)
cap = FZ_LINECAP_BUTT;
fz_append_printf(ctx, gs->buf, "%d J\n", cap);
}
if (!gs->stroke_state || gs->stroke_state->linejoin != stroke_state->linejoin)
{
int join = stroke_state->linejoin;
if (join == FZ_LINEJOIN_MITER_XPS)
join = FZ_LINEJOIN_MITER;
fz_append_printf(ctx, gs->buf, "%d j\n", join);
}
if (!gs->stroke_state || gs->stroke_state->miterlimit != stroke_state->miterlimit)
{
fz_append_printf(ctx, gs->buf, "%g M\n", stroke_state->miterlimit);
}
if (gs->stroke_state == NULL && stroke_state->dash_len == 0)
{}
else if (!gs->stroke_state || gs->stroke_state->dash_phase != stroke_state->dash_phase || gs->stroke_state->dash_len != stroke_state->dash_len ||
memcmp(gs->stroke_state->dash_list, stroke_state->dash_list, sizeof(float)*stroke_state->dash_len))
{
int i;
if (stroke_state->dash_len == 0)
fz_append_byte(ctx, gs->buf, '[');
for (i = 0; i < stroke_state->dash_len; i++)
{
if (i > 0)
fz_append_byte(ctx, gs->buf, ' ');
fz_append_printf(ctx, gs->buf, "%g", stroke_state->dash_list[i]);
}
fz_append_printf(ctx, gs->buf, "]%g d\n", stroke_state->dash_phase);
}
fz_drop_stroke_state(ctx, gs->stroke_state);
gs->stroke_state = fz_keep_stroke_state(ctx, stroke_state);
}
static void
write_simple_string(fz_context *ctx, fz_buffer *buf, const char *a, const char *b)
{
fz_append_byte(ctx, buf, '(');
while (a < b)
{
int c;
a += fz_chartorune(&c, a);
c = fz_windows_1252_from_unicode(c);
if (c < 0) c = REPLACEMENT;
if (c == '(' || c == ')' || c == '\\')
fz_append_byte(ctx, buf, '\\');
fz_append_byte(ctx, buf, c);
}
fz_append_byte(ctx, buf, ')');
}
char *
fz_copy_selection(fz_context *ctx, fz_stext_page *page, fz_rect rect)
{
fz_buffer *buffer;
fz_rect hitbox;
int c, seen = 0;
unsigned char *s;
fz_stext_block *block;
fz_stext_line *line;
fz_stext_char *ch;
float x0 = rect.x0;
float x1 = rect.x1;
float y0 = rect.y0;
float y1 = rect.y1;
buffer = fz_new_buffer(ctx, 1024);
for (block = page->first_block; block; block = block->next)
{
if (block->type != FZ_STEXT_BLOCK_TEXT)
continue;
for (line = block->u.t.first_line; line; line = line->next)
{
if (seen)
{
fz_append_byte(ctx, buffer, '\n');
}
seen = 0;
for (ch = line->first_char; ch; ch = ch->next)
{
fz_stext_char_bbox(ctx, &hitbox, line, ch);
c = ch->c;
if (c < 32)
c = FZ_REPLACEMENT_CHARACTER;
if (hitbox.x1 >= x0 && hitbox.x0 <= x1 && hitbox.y1 >= y0 && hitbox.y0 <= y1)
{
fz_append_rune(ctx, buffer, c);
seen = 1;
}
}
seen = (seen && line == block->u.t.last_line);
}
}
fz_terminate_buffer(ctx, buffer);
fz_buffer_extract(ctx, buffer, &s); /* take over the data */
fz_drop_buffer(ctx, buffer);
return (char*)s;
}
static void
pdf_write_ch_widget_appearance(fz_context *ctx, pdf_annot *annot, fz_buffer *buf,
fz_rect *rect, fz_rect *bbox, fz_matrix *matrix, pdf_obj **res)
{
int ff = pdf_field_flags(ctx, annot->obj);
if (ff & PDF_CH_FIELD_IS_COMBO)
{
/* TODO: Pop-down arrow */
pdf_write_tx_widget_appearance(ctx, annot, buf, rect, bbox, matrix, res,
pdf_field_value(ctx, annot->obj), 0);
}
else
{
fz_buffer *text = fz_new_buffer(ctx, 1024);
fz_try(ctx)
{
pdf_obj *opt = pdf_dict_get(ctx, annot->obj, PDF_NAME(Opt));
int i = pdf_dict_get_int(ctx, annot->obj, PDF_NAME(TI));
int n = pdf_array_len(ctx, opt);
/* TODO: Scrollbar */
/* TODO: Highlight selected items */
if (i < 0)
i = 0;
for (; i < n; ++i)
{
pdf_obj *val = pdf_array_get(ctx, opt, i);
if (pdf_is_array(ctx, val))
fz_append_string(ctx, text, pdf_array_get_text_string(ctx, val, 1));
else
fz_append_string(ctx, text, pdf_to_text_string(ctx, val));
fz_append_byte(ctx, text, '\n');
}
pdf_write_tx_widget_appearance(ctx, annot, buf, rect, bbox, matrix, res,
fz_string_from_buffer(ctx, text), PDF_TX_FIELD_IS_MULTILINE);
}
fz_always(ctx)
fz_drop_buffer(ctx, text);
fz_catch(ctx)
fz_rethrow(ctx);
}
}
static void on_copy_line_lf(fz_context *ctx, void *arg, fz_stext_line *line)
{
fz_buffer *buffer = arg;
fz_append_byte(ctx, buffer, '\n');
}
