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#include "mupdf/pdf.h"
#define TEXT_ANNOT_SIZE (25.0)
static const char *annot_type_str(fz_annot_type type)
{
switch (type)
{
case FZ_ANNOT_TEXT: return "Text";
case FZ_ANNOT_LINK: return "Link";
case FZ_ANNOT_FREETEXT: return "FreeText";
case FZ_ANNOT_LINE: return "Line";
case FZ_ANNOT_SQUARE: return "Square";
case FZ_ANNOT_CIRCLE: return "Circle";
case FZ_ANNOT_POLYGON: return "Polygon";
case FZ_ANNOT_POLYLINE: return "PolyLine";
case FZ_ANNOT_HIGHLIGHT: return "Highlight";
case FZ_ANNOT_UNDERLINE: return "Underline";
case FZ_ANNOT_SQUIGGLY: return "Squiggly";
case FZ_ANNOT_STRIKEOUT: return "StrikeOut";
case FZ_ANNOT_STAMP: return "Stamp";
case FZ_ANNOT_CARET: return "Caret";
case FZ_ANNOT_INK: return "Ink";
case FZ_ANNOT_POPUP: return "Popup";
case FZ_ANNOT_FILEATTACHMENT: return "FileAttachment";
case FZ_ANNOT_SOUND: return "Sound";
case FZ_ANNOT_MOVIE: return "Movie";
case FZ_ANNOT_WIDGET: return "Widget";
case FZ_ANNOT_SCREEN: return "Screen";
case FZ_ANNOT_PRINTERMARK: return "PrinterMark";
case FZ_ANNOT_TRAPNET: return "TrapNet";
case FZ_ANNOT_WATERMARK: return "Watermark";
case FZ_ANNOT_3D: return "3D";
default: return "";
}
}
void
pdf_update_annot(fz_context *ctx, pdf_document *doc, pdf_annot *annot)
{
pdf_obj *obj, *ap, *as, *n;
if (doc->update_appearance)
doc->update_appearance(ctx, doc, annot);
obj = annot->obj;
ap = pdf_dict_get(ctx, obj, PDF_NAME_AP);
as = pdf_dict_get(ctx, obj, PDF_NAME_AS);
if (pdf_is_dict(ctx, ap))
{
pdf_hotspot *hp = &doc->hotspot;
n = NULL;
if (hp->num == pdf_to_num(ctx, obj) && (hp->state & HOTSPOT_POINTER_DOWN))
{
n = pdf_dict_get(ctx, ap, PDF_NAME_D); /* down state */
}
if (n == NULL)
n = pdf_dict_get(ctx, ap, PDF_NAME_N); /* normal state */
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(ctx, n))
n = pdf_dict_get(ctx, n, as);
pdf_drop_xobject(ctx, annot->ap);
annot->ap = NULL;
if (pdf_is_stream(ctx, n))
{
fz_try(ctx)
{
annot->ap = pdf_load_xobject(ctx, doc, n);
pdf_transform_annot(ctx, annot);
annot->ap_iteration = annot->ap->iteration;
}
fz_catch(ctx)
{
fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
fz_warn(ctx, "ignoring broken annotation");
}
}
}
}
pdf_annot *
pdf_create_annot(fz_context *ctx, pdf_document *doc, pdf_page *page, fz_annot_type type)
{
pdf_annot *annot = NULL;
pdf_obj *annot_obj = pdf_new_dict(ctx, doc, 0);
pdf_obj *ind_obj = NULL;
fz_var(annot);
fz_var(ind_obj);
fz_try(ctx)
{
int ind_obj_num;
fz_rect rect = {0.0, 0.0, 0.0, 0.0};
const char *type_str = annot_type_str(type);
pdf_obj *annot_arr = pdf_dict_get(ctx, page->me, PDF_NAME_Annots);
if (annot_arr == NULL)
{
annot_arr = pdf_new_array(ctx, doc, 0);
pdf_dict_put_drop(ctx, page->me, PDF_NAME_Annots, annot_arr);
}
pdf_dict_put_drop(ctx, annot_obj, PDF_NAME_Type, PDF_NAME_Annot);
pdf_dict_put_drop(ctx, annot_obj, PDF_NAME_Subtype, pdf_new_name(ctx, doc, type_str));
pdf_dict_put_drop(ctx, annot_obj, PDF_NAME_Rect, pdf_new_rect(ctx, doc, &rect));
/* Make printable as default */
pdf_dict_put_drop(ctx, annot_obj, PDF_NAME_F, pdf_new_int(ctx, doc, F_Print));
annot = pdf_new_annot(ctx, page);
annot->rect = rect;
annot->pagerect = rect;
annot->ap = NULL;
annot->widget_type = PDF_WIDGET_TYPE_NOT_WIDGET;
annot->annot_type = type;
/*
Both annotation object and annotation structure are now created.
Insert the object in the hierarchy and the structure in the
page's array.
*/
ind_obj_num = pdf_create_object(ctx, doc);
pdf_update_object(ctx, doc, ind_obj_num, annot_obj);
ind_obj = pdf_new_indirect(ctx, doc, ind_obj_num, 0);
pdf_array_push(ctx, annot_arr, ind_obj);
annot->obj = pdf_keep_obj(ctx, ind_obj);
/*
Linking must be done after any call that might throw because
pdf_drop_annots below actually frees a list. Put the new annot
at the end of the list, so that it will be drawn last.
*/
*page->annot_tailp = annot;
page->annot_tailp = &annot->next;
doc->dirty = 1;
}
fz_always(ctx)
{
pdf_drop_obj(ctx, annot_obj);
pdf_drop_obj(ctx, ind_obj);
}
fz_catch(ctx)
{
pdf_drop_annots(ctx, annot);
fz_rethrow(ctx);
}
return annot;
}
void
pdf_delete_annot(fz_context *ctx, pdf_document *doc, pdf_page *page, pdf_annot *annot)
{
pdf_annot **annotptr;
pdf_obj *old_annot_arr;
pdf_obj *annot_arr;
if (annot == NULL)
return;
/* Remove annot from page's list */
for (annotptr = &page->annots; *annotptr; annotptr = &(*annotptr)->next)
{
if (*annotptr == annot)
break;
}
/* Check the passed annotation was of this page */
if (*annotptr == NULL)
return;
*annotptr = annot->next;
/* If the removed annotation was the last in the list adjust the end pointer */
if (*annotptr == NULL)
page->annot_tailp = annotptr;
/* Stick it in the deleted list */
annot->next = page->deleted_annots;
page->deleted_annots = annot;
pdf_drop_xobject(ctx, annot->ap);
annot->ap = NULL;
/* Recreate the "Annots" array with this annot removed */
old_annot_arr = pdf_dict_get(ctx, page->me, PDF_NAME_Annots);
if (old_annot_arr)
{
int i, n = pdf_array_len(ctx, old_annot_arr);
annot_arr = pdf_new_array(ctx, doc, n?(n-1):0);
fz_try(ctx)
{
for (i = 0; i < n; i++)
{
pdf_obj *obj = pdf_array_get(ctx, old_annot_arr, i);
if (obj != annot->obj)
pdf_array_push(ctx, annot_arr, obj);
}
if (pdf_is_indirect(ctx, old_annot_arr))
pdf_update_object(ctx, doc, pdf_to_num(ctx, old_annot_arr), annot_arr);
else
pdf_dict_put(ctx, page->me, PDF_NAME_Annots, annot_arr);
if (pdf_is_indirect(ctx, annot->obj))
pdf_delete_object(ctx, doc, pdf_to_num(ctx, annot->obj));
}
fz_always(ctx)
{
pdf_drop_obj(ctx, annot_arr);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
pdf_drop_obj(ctx, annot->obj);
annot->obj = NULL;
doc->dirty = 1;
}
void
pdf_set_markup_annot_quadpoints(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_point *qp, int n)
{
fz_matrix ctm;
pdf_obj *arr = pdf_new_array(ctx, doc, n*2);
int i;
fz_invert_matrix(&ctm, &annot->page->ctm);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_QuadPoints, arr);
for (i = 0; i < n; i++)
{
fz_point pt = qp[i];
pdf_obj *r;
fz_transform_point(&pt, &ctm);
r = pdf_new_real(ctx, doc, pt.x);
pdf_array_push_drop(ctx, arr, r);
r = pdf_new_real(ctx, doc, pt.y);
pdf_array_push_drop(ctx, arr, r);
}
}
static void update_rect(fz_context *ctx, pdf_annot *annot)
{
pdf_to_rect(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_Rect), &annot->rect);
annot->pagerect = annot->rect;
fz_transform_rect(&annot->pagerect, &annot->page->ctm);
}
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 find_free_font_name(fz_context *ctx, pdf_obj *fdict, char *buf, int buf_size)
{
int i;
/* Find a number X such that /FX doesn't occur as a key in fdict */
for (i = 0; 1; i++)
{
snprintf(buf, buf_size, "F%d", i);
if (!pdf_dict_gets(ctx, fdict, buf))
break;
}
}
void pdf_set_text_annot_position(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_point pt)
{
fz_matrix ctm;
fz_rect rect;
int flags;
fz_invert_matrix(&ctm, &annot->page->ctm);
rect.x0 = pt.x;
rect.x1 = pt.x + TEXT_ANNOT_SIZE;
rect.y0 = pt.y;
rect.y1 = pt.y + TEXT_ANNOT_SIZE;
fz_transform_rect(&rect, &ctm);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Rect, pdf_new_rect(ctx, doc, &rect));
flags = pdf_to_int(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_F));
flags |= (F_NoZoom|F_NoRotate);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_F, pdf_new_int(ctx, doc, flags));
update_rect(ctx, annot);
}
void pdf_set_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot, char *text)
{
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Contents, pdf_new_string(ctx, doc, text, strlen(text)));
}
const char *pdf_annot_contents(fz_context *ctx, pdf_annot *annot)
{
return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_Contents));
}
const char *pdf_annot_author(fz_context *ctx, pdf_annot *annot)
{
return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_T));
}
const char *pdf_annot_date(fz_context *ctx, pdf_annot *annot)
{
return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_CreationDate));
}
pdf_obj *pdf_annot_irt(fz_context *ctx, pdf_annot *annot)
{
return pdf_dict_get(ctx, annot->obj, PDF_NAME_IRT);
}
void pdf_set_free_text_details(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_point *pos, char *text, char *font_name, float font_size, float color[3])
{
char nbuf[32];
pdf_obj *dr;
pdf_obj *form_fonts;
pdf_obj *font = NULL;
pdf_obj *ref;
pdf_font_desc *font_desc = NULL;
pdf_da_info da_info;
fz_buffer *fzbuf = NULL;
fz_matrix ctm;
fz_point page_pos;
fz_invert_matrix(&ctm, &annot->page->ctm);
dr = pdf_dict_get(ctx, annot->page->me, PDF_NAME_Resources);
if (!dr)
{
dr = pdf_new_dict(ctx, doc, 1);
pdf_dict_put_drop(ctx, annot->page->me, PDF_NAME_Resources, dr);
}
/* Ensure the resource dictionary includes a font dict */
form_fonts = pdf_dict_get(ctx, dr, PDF_NAME_Font);
if (!form_fonts)
{
form_fonts = pdf_new_dict(ctx, doc, 1);
pdf_dict_put_drop(ctx, dr, PDF_NAME_Font, form_fonts);
/* form_fonts is still valid if execution continues past the above call */
}
fz_var(fzbuf);
fz_var(font);
fz_try(ctx)
{
unsigned char *da_str;
size_t da_len;
fz_rect bounds;
find_free_font_name(ctx, form_fonts, nbuf, sizeof(nbuf));
font = pdf_new_dict(ctx, doc, 5);
ref = pdf_add_object(ctx, doc, font);
pdf_dict_puts_drop(ctx, form_fonts, nbuf, ref);
pdf_dict_put_drop(ctx, font, PDF_NAME_Type, PDF_NAME_Font);
pdf_dict_put_drop(ctx, font, PDF_NAME_Subtype, PDF_NAME_Type1);
pdf_dict_put_drop(ctx, font, PDF_NAME_BaseFont, pdf_new_name(ctx, doc, font_name));
pdf_dict_put_drop(ctx, font, PDF_NAME_Encoding, PDF_NAME_WinAnsiEncoding);
memcpy(da_info.col, color, sizeof(float)*3);
da_info.col_size = 3;
da_info.font_name = nbuf;
da_info.font_size = font_size;
fzbuf = fz_new_buffer(ctx, 0);
pdf_fzbuf_print_da(ctx, fzbuf, &da_info);
da_len = fz_buffer_storage(ctx, fzbuf, &da_str);
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_DA, pdf_new_string(ctx, doc, (char *)da_str, da_len));
/* FIXME: should convert to WinAnsiEncoding */
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Contents, pdf_new_string(ctx, doc, text, strlen(text)));
font_desc = pdf_load_font(ctx, doc, NULL, font, 0);
pdf_measure_text(ctx, font_desc, (unsigned char *)text, strlen(text), &bounds);
page_pos = *pos;
fz_transform_point(&page_pos, &ctm);
bounds.x0 *= font_size;
bounds.x1 *= font_size;
bounds.y0 *= font_size;
bounds.y1 *= font_size;
bounds.x0 += page_pos.x;
bounds.x1 += page_pos.x;
bounds.y0 += page_pos.y;
bounds.y1 += page_pos.y;
pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Rect, pdf_new_rect(ctx, doc, &bounds));
update_rect(ctx, annot);
}
fz_always(ctx)
{
pdf_drop_obj(ctx, font);
fz_drop_buffer(ctx, fzbuf);
pdf_drop_font(ctx, font_desc);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
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