/usr/include/mupdf/pdf/page.h is in libmupdf-dev 1.12.0+ds1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 | #ifndef MUPDF_PDF_PAGE_H
#define MUPDF_PDF_PAGE_H
#include "mupdf/pdf/interpret.h"
int pdf_lookup_page_number(fz_context *ctx, pdf_document *doc, pdf_obj *pageobj);
int pdf_count_pages(fz_context *ctx, pdf_document *doc);
pdf_obj *pdf_lookup_page_obj(fz_context *ctx, pdf_document *doc, int needle);
void pdf_load_page_tree(fz_context *ctx, pdf_document *doc);
void pdf_drop_page_tree(fz_context *ctx, pdf_document *doc);
/*
pdf_lookup_anchor: Find the page number of a named destination.
For use with looking up the destination page of a fragment
identifier in hyperlinks: foo.pdf#bar or foo.pdf#page=5.
*/
int pdf_lookup_anchor(fz_context *ctx, pdf_document *doc, const char *name, float *xp, float *yp);
/*
pdf_flatten_inheritable_page_items: Make page self sufficient.
Copy any inheritable page keys into the actual page object, removing
any dependencies on the page tree parents.
*/
void pdf_flatten_inheritable_page_items(fz_context *ctx, pdf_obj *page);
/*
pdf_load_page: Load a page and its resources.
Locates the page in the PDF document and loads the page and its
resources. After pdf_load_page is it possible to retrieve the size
of the page using pdf_bound_page, or to render the page using
pdf_run_page_*.
number: page number, where 0 is the first page of the document.
*/
pdf_page *pdf_load_page(fz_context *ctx, pdf_document *doc, int number);
void pdf_page_obj_transform(fz_context *ctx, pdf_obj *pageobj, fz_rect *page_mediabox, fz_matrix *page_ctm);
void pdf_page_transform(fz_context *ctx, pdf_page *page, fz_rect *mediabox, fz_matrix *ctm);
pdf_obj *pdf_page_resources(fz_context *ctx, pdf_page *page);
pdf_obj *pdf_page_contents(fz_context *ctx, pdf_page *page);
pdf_obj *pdf_page_group(fz_context *ctx, pdf_page *page);
/*
pdf_page_separations: Get the separation details for a page.
*/
fz_separations *pdf_page_separations(fz_context *ctx, pdf_page *page);
fz_link *pdf_load_links(fz_context *ctx, pdf_page *page);
/*
pdf_bound_page: Determine the size of a page.
Determine the page size in user space units, taking page rotation
into account. The page size is taken to be the crop box if it
exists (visible area after cropping), otherwise the media box will
be used (possibly including printing marks).
*/
fz_rect *pdf_bound_page(fz_context *ctx, pdf_page *page, fz_rect *);
/*
pdf_run_page: Interpret a loaded page and render it on a device.
page: A page loaded by pdf_load_page.
dev: Device used for rendering, obtained from fz_new_*_device.
ctm: A transformation matrix applied to the objects on the page,
e.g. to scale or rotate the page contents as desired.
*/
void pdf_run_page(fz_context *ctx, pdf_page *page, fz_device *dev, const fz_matrix *ctm, fz_cookie *cookie);
/*
pdf_run_page_with_usage: Interpret a loaded page and render it on a device.
page: A page loaded by pdf_load_page.
dev: Device used for rendering, obtained from fz_new_*_device.
ctm: A transformation matrix applied to the objects on the page,
e.g. to scale or rotate the page contents as desired.
usage: The 'usage' for displaying the file (typically
'View', 'Print' or 'Export'). NULL means 'View'.
cookie: A pointer to an optional fz_cookie structure that can be used
to track progress, collect errors etc.
*/
void pdf_run_page_with_usage(fz_context *ctx, pdf_document *doc, pdf_page *page, fz_device *dev, const fz_matrix *ctm, const char *usage, fz_cookie *cookie);
/*
pdf_run_page_contents: Interpret a loaded page and render it on a device.
Just the main page contents without the annotations
page: A page loaded by pdf_load_page.
dev: Device used for rendering, obtained from fz_new_*_device.
ctm: A transformation matrix applied to the objects on the page,
e.g. to scale or rotate the page contents as desired.
*/
void pdf_run_page_contents(fz_context *ctx, pdf_page *page, fz_device *dev, const fz_matrix *ctm, fz_cookie *cookie);
/*
pdf_page_contents_process_fn: A function used for processing the
cleaned page contents/resources gathered as part of
pdf_clean_page_contents.
buffer: A buffer holding the page contents.
res: A pdf_obj holding the page resources.
arg: An opaque arg specific to the particular function.
*/
typedef void (pdf_page_contents_process_fn)(fz_context *ctx, fz_buffer *buffer, pdf_obj *res, void *arg);
/*
pdf_clean_page_contents: Clean a loaded pages rendering operations,
with an optional post processing step.
Firstly, this filters the PDF operators used to avoid (some cases
of) repetition, and leaves the page in a balanced state with an
unchanged top level matrix etc. At the same time, the resources
used by the page contents are collected.
Next, the resources themselves are cleaned (as appropriate) in the
same way.
Next, an optional post processing stage is called.
Finally, the page contents and resources in the documents page tree
are replaced by these processed versions.
Annotations remain unaffected.
page: A page loaded by pdf_load_page.
cookie: A pointer to an optional fz_cookie structure that can be used
to track progress, collect errors etc.
*/
void pdf_clean_page_contents(fz_context *ctx, pdf_document *doc, pdf_page *page, fz_cookie *cookie,
pdf_page_contents_process_fn *proc, void *proc_arg, int ascii);
/*
pdf_clean_annot_contents: Clean a loaded annotations rendering operations,
with an optional post processing step.
Each appearance stream in the annotation is processed.
Firstly, this filters the PDF operators used to avoid (some cases
of) repetition, and leaves the page in a balanced state with an
unchanged top level matrix etc. At the same time, the resources
used by the page contents are collected.
Next, the resources themselves are cleaned (as appropriate) in the
same way.
Next, an optional post processing stage is called.
Finally, the updated stream of operations is reinserted into the
appearance stream.
annot: An annotation loaded by pdf_load_annot.
cookie: A pointer to an optional fz_cookie structure that can be used
to track progress, collect errors etc.
*/
void pdf_clean_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_cookie *cookie,
pdf_page_contents_process_fn *proc, void *proc_arg, int ascii);
/*
pdf_filter_page_contents: Performs the same task as
pdf_clean_page_contents, but with an optional text filter
function.
text_filter: Function to assess whether a given character
should be kept (return 0) or removed (return 1).
after_text: Function called after each text object is closed
to allow other output to be sent.
arg: Opaque value to be passed to callback functions.
*/
void pdf_filter_page_contents(fz_context *ctx, pdf_document *doc, pdf_page *page, fz_cookie *cookie,
pdf_page_contents_process_fn *proc_fn, pdf_text_filter_fn *text_filter, pdf_after_text_object_fn *after_text, void *arg, int ascii);
/*
pdf_filter_annot_contents: Performs the same task as
pdf_clean_annot_contents, but with an optional text filter
function.
text_filter: Function to assess whether a given character
should be kept (return 0) or removed (return 1).
after_text: Function called after each text object is closed
to allow other output to be sent.
arg: Opaque value to be passed to callback functions.
*/
void pdf_filter_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot, fz_cookie *cookie,
pdf_page_contents_process_fn *proc, pdf_text_filter_fn *text_filter, pdf_after_text_object_fn *after_text, void *arg, int ascii);
/*
Presentation interface.
*/
fz_transition *pdf_page_presentation(fz_context *ctx, pdf_page *page, fz_transition *transition, float *duration);
/*
Load default colorspaces for a page.
*/
fz_default_colorspaces *pdf_load_default_colorspaces(fz_context *ctx, pdf_document *doc, pdf_page *page);
/*
Update default colorspaces for an xobject.
*/
fz_default_colorspaces *pdf_update_default_colorspaces(fz_context *ctx, fz_default_colorspaces *old_cs, pdf_obj *res);
/*
* Page tree, pages and related objects
*/
struct pdf_page_s
{
fz_page super;
pdf_document *doc;
pdf_obj *obj;
int transparency;
int overprint;
int incomplete;
fz_link *links;
pdf_annot *annots, **annot_tailp;
};
enum
{
PDF_PAGE_INCOMPLETE_CONTENTS = 1,
PDF_PAGE_INCOMPLETE_ANNOTS = 2
};
#endif
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