static void pdf_write_arrow_appearance(fz_context *ctx, fz_buffer *buf, fz_rect *rect, float x, float y, float dx, float dy, float w)
{
float r = fz_max(1, w);
float angle = atan2f(dy, dx);
fz_point v, a, b;
v = rotate_vector(angle, 8.8f*r, 4.5f*r);
a = fz_make_point(x + v.x, y + v.y);
v = rotate_vector(angle, 8.8f*r, -4.5f*r);
b = fz_make_point(x + v.x, y + v.y);
*rect = fz_include_point_in_rect(*rect, a);
*rect = fz_include_point_in_rect(*rect, b);
*rect = fz_expand_rect(*rect, w);
fz_append_printf(ctx, buf, "%g %g m\n", a.x, a.y);
fz_append_printf(ctx, buf, "%g %g l\n", x, y);
fz_append_printf(ctx, buf, "%g %g l\n", b.x, b.y);
}
static void
pdf_write_polygon_appearance(fz_context *ctx, pdf_annot *annot, fz_buffer *buf, fz_rect *rect, int close)
{
pdf_obj *verts;
fz_point p;
int i, n;
float lw;
lw = pdf_write_border_appearance(ctx, annot, buf);
pdf_write_stroke_color_appearance(ctx, annot, buf);
*rect = fz_empty_rect;
verts = pdf_dict_get(ctx, annot->obj, PDF_NAME(Vertices));
n = pdf_array_len(ctx, verts) / 2;
if (n > 0)
{
for (i = 0; i < n; ++i)
{
p.x = pdf_array_get_real(ctx, verts, i*2+0);
p.y = pdf_array_get_real(ctx, verts, i*2+1);
if (i == 0)
{
rect->x0 = rect->x1 = p.x;
rect->y0 = rect->y1 = p.y;
}
else
*rect = fz_include_point_in_rect(*rect, p);
if (i == 0)
fz_append_printf(ctx, buf, "%g %g m\n", p.x, p.y);
else
fz_append_printf(ctx, buf, "%g %g l\n", p.x, p.y);
}
fz_append_string(ctx, buf, close ? "s" : "S");
*rect = fz_expand_rect(*rect, lw);
}
}
static void
pdf_write_ink_appearance(fz_context *ctx, pdf_annot *annot, fz_buffer *buf, fz_rect *rect)
{
pdf_obj *ink_list, *stroke;
int i, n, k, m;
float lw;
fz_point p;
lw = pdf_write_border_appearance(ctx, annot, buf);
pdf_write_stroke_color_appearance(ctx, annot, buf);
*rect = fz_empty_rect;
ink_list = pdf_dict_get(ctx, annot->obj, PDF_NAME(InkList));
n = pdf_array_len(ctx, ink_list);
for (i = 0; i < n; ++i)
{
stroke = pdf_array_get(ctx, ink_list, i);
m = pdf_array_len(ctx, stroke) / 2;
for (k = 0; k < m; ++k)
{
p.x = pdf_array_get_real(ctx, stroke, k*2+0);
p.y = pdf_array_get_real(ctx, stroke, k*2+1);
if (i == 0 && k == 0)
{
rect->x0 = rect->x1 = p.x;
rect->y0 = rect->y1 = p.y;
}
else
*rect = fz_include_point_in_rect(*rect, p);
fz_append_printf(ctx, buf, "%g %g %c\n", p.x, p.y, k == 0 ? 'm' : 'l');
}
}
fz_append_printf(ctx, buf, "S");
*rect = fz_expand_rect(*rect, lw);
}
void
pdf_set_ink_annot_list(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_point *pts, int *counts, int ncount, float color[3], float thickness)
{
fz_matrix ctm;
pdf_obj *list = pdf_new_array(ctx, doc, ncount);
pdf_obj *bs, *col;
fz_rect rect;
int i, k = 0;
fz_invert_matrix(&ctm, &annot->page->ctm);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_InkList, list);
for (i = 0; i < ncount; i++)
{
int j;
pdf_obj *arc = pdf_new_array(ctx, doc, counts[i]);
pdf_array_push_drop(ctx, list, arc);
for (j = 0; j < counts[i]; j++)
{
fz_point pt = pts[k];
fz_transform_point(&pt, &ctm);
if (i == 0 && j == 0)
{
rect.x0 = rect.x1 = pt.x;
rect.y0 = rect.y1 = pt.y;
}
else
{
fz_include_point_in_rect(&rect, &pt);
}
pdf_array_push_drop(ctx, arc, pdf_new_real(ctx, doc, pt.x));
pdf_array_push_drop(ctx, arc, pdf_new_real(ctx, doc, pt.y));
k++;
}
}
/*
Expand the rectangle by thickness all around. We cannot use
fz_expand_rect because the rectangle might be empty in the
single point case
*/
if (k > 0)
{
rect.x0 -= thickness;
rect.y0 -= thickness;
rect.x1 += thickness;
rect.y1 += thickness;
}
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Rect, pdf_new_rect(ctx, doc, &rect));
update_rect(ctx, annot);
bs = pdf_new_dict(ctx, doc, 1);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_BS, bs);
pdf_dict_put_drop(ctx, bs, PDF_NAME_W, pdf_new_real(ctx, doc, thickness));
col = pdf_new_array(ctx, doc, 3);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_C, col);
for (i = 0; i < 3; i++)
pdf_array_push_drop(ctx, col, pdf_new_real(ctx, doc, color[i]));
}
static void
pdf_write_line_cap_appearance(fz_context *ctx, fz_buffer *buf, fz_rect *rect,
float x, float y, float dx, float dy, float w, int ic, pdf_obj *cap)
{
if (cap == PDF_NAME(Square))
{
float r = fz_max(2.5f, w * 2.5f);
fz_append_printf(ctx, buf, "%g %g %g %g re\n", x-r, y-r, r*2, r*2);
fz_append_string(ctx, buf, ic ? "b\n" : "s\n");
include_cap(rect, x, y, r);
}
else if (cap == PDF_NAME(Circle))
{
float r = fz_max(2.5f, w * 2.5f);
float m = r * CIRCLE_MAGIC;
fz_append_printf(ctx, buf, "%g %g m\n", x, y+r);
fz_append_printf(ctx, buf, "%g %g %g %g %g %g c\n", x+m, y+r, x+r, y+m, x+r, y);
fz_append_printf(ctx, buf, "%g %g %g %g %g %g c\n", x+r, y-m, x+m, y-r, x, y-r);
fz_append_printf(ctx, buf, "%g %g %g %g %g %g c\n", x-m, y-r, x-r, y-m, x-r, y);
fz_append_printf(ctx, buf, "%g %g %g %g %g %g c\n", x-r, y+m, x-m, y+r, x, y+r);
fz_append_string(ctx, buf, ic ? "b\n" : "s\n");
include_cap(rect, x, y, r);
}
else if (cap == PDF_NAME(Diamond))
{
float r = fz_max(2.5f, w * 2.5f);
fz_append_printf(ctx, buf, "%g %g m\n", x, y+r);
fz_append_printf(ctx, buf, "%g %g l\n", x+r, y);
fz_append_printf(ctx, buf, "%g %g l\n", x, y-r);
fz_append_printf(ctx, buf, "%g %g l\n", x-r, y);
fz_append_string(ctx, buf, ic ? "b\n" : "s\n");
include_cap(rect, x, y, r);
}
else if (cap == PDF_NAME(OpenArrow))
{
pdf_write_arrow_appearance(ctx, buf, rect, x, y, dx, dy, w);
fz_append_string(ctx, buf, "S\n");
}
else if (cap == PDF_NAME(ClosedArrow))
{
pdf_write_arrow_appearance(ctx, buf, rect, x, y, dx, dy, w);
fz_append_string(ctx, buf, ic ? "b\n" : "s\n");
}
/* PDF 1.5 */
else if (cap == PDF_NAME(Butt))
{
float r = fz_max(3, w * 3);
fz_point a = { x-dy*r, y+dx*r };
fz_point b = { x+dy*r, y-dx*r };
fz_append_printf(ctx, buf, "%g %g m\n", a.x, a.y);
fz_append_printf(ctx, buf, "%g %g l\n", b.x, b.y);
fz_append_string(ctx, buf, "S\n");
*rect = fz_include_point_in_rect(*rect, a);
*rect = fz_include_point_in_rect(*rect, b);
}
/* PDF 1.6 */
else if (cap == PDF_NAME(ROpenArrow))
{
pdf_write_arrow_appearance(ctx, buf, rect, x, y, -dx, -dy, w);
fz_append_string(ctx, buf, "S\n");
}
else if (cap == PDF_NAME(RClosedArrow))
{
pdf_write_arrow_appearance(ctx, buf, rect, x, y, -dx, -dy, w);
fz_append_string(ctx, buf, ic ? "b\n" : "s\n");
}
else if (cap == PDF_NAME(Slash))
{
float r = fz_max(5, w * 5);
float angle = atan2f(dy, dx) - (30 * FZ_PI / 180);
fz_point a, b, v;
v = rotate_vector(angle, 0, r);
a = fz_make_point(x + v.x, y + v.y);
v = rotate_vector(angle, 0, -r);
b = fz_make_point(x + v.x, y + v.y);
fz_append_printf(ctx, buf, "%g %g m\n", a.x, a.y);
fz_append_printf(ctx, buf, "%g %g l\n", b.x, b.y);
fz_append_string(ctx, buf, "S\n");
*rect = fz_include_point_in_rect(*rect, a);
*rect = fz_include_point_in_rect(*rect, b);
}
}