zathura_error_t
djvu_page_init(zathura_page_t* page, void* UNUSED(data))
{
if (page == NULL) {
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
zathura_document_t* document = zathura_page_get_document(page);
djvu_document_t* djvu_document = zathura_document_get_data(document);
ddjvu_status_t status;
ddjvu_pageinfo_t page_info;
unsigned int index = zathura_page_get_index(page);
while ((status = ddjvu_document_get_pageinfo(djvu_document->document, index,
&page_info)) < DDJVU_JOB_OK) {
handle_messages(djvu_document, true);
}
if (status >= DDJVU_JOB_FAILED) {
handle_messages(djvu_document, true);
return ZATHURA_ERROR_UNKNOWN;
}
zathura_page_set_width(page, ZATHURA_DJVU_SCALE * page_info.width);
zathura_page_set_height(page, ZATHURA_DJVU_SCALE * page_info.height);
return ZATHURA_ERROR_OK;
}
zathura_error_t
ps_page_init(zathura_page_t* page, SpectrePage* spectre_page)
{
if (page == NULL) {
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
zathura_document_t* document = zathura_page_get_document(page);
SpectreDocument* spectre_document = zathura_document_get_data(document);
SpectrePage* ps_page = spectre_document_get_page(spectre_document, zathura_page_get_index(page));
if (ps_page == NULL) {
return ZATHURA_ERROR_UNKNOWN;
}
int page_width;
int page_height;
spectre_page_get_size(ps_page, &(page_width), &(page_height));
zathura_page_set_width(page, page_width);
zathura_page_set_height(page, page_height);
zathura_page_set_data(page, ps_page);
return ZATHURA_ERROR_OK;
}
zathura_error_t
djvu_page_render_cairo(zathura_page_t* page, void* UNUSED(data), cairo_t* cairo,
bool GIRARA_UNUSED(printing))
{
if (page == NULL || cairo == NULL) {
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
return ZATHURA_ERROR_UNKNOWN;
}
/* init ddjvu render data */
djvu_document_t* djvu_document = zathura_document_get_data(document);
ddjvu_page_t* djvu_page = ddjvu_page_create_by_pageno(djvu_document->document, zathura_page_get_index(page));
if (djvu_page == NULL) {
return ZATHURA_ERROR_UNKNOWN;
}
while (!ddjvu_page_decoding_done(djvu_page)) {
handle_messages(djvu_document, true);
}
cairo_surface_t* surface = cairo_get_target(cairo);
if (surface == NULL ||
cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS ||
cairo_surface_get_type(surface) != CAIRO_SURFACE_TYPE_IMAGE) {
ddjvu_page_release(djvu_page);
return ZATHURA_ERROR_UNKNOWN;
}
unsigned int page_width = cairo_image_surface_get_width(surface);
unsigned int page_height = cairo_image_surface_get_height(surface);;
ddjvu_rect_t rrect = { 0, 0, page_width, page_height };
ddjvu_rect_t prect = { 0, 0, page_width, page_height };
char* surface_data = (char*) cairo_image_surface_get_data(surface);
if (surface_data == NULL) {
ddjvu_page_release(djvu_page);
return ZATHURA_ERROR_UNKNOWN;
}
/* render page */
ddjvu_page_render(djvu_page, DDJVU_RENDER_COLOR, &prect, &rrect,
djvu_document->format, cairo_image_surface_get_stride(surface), surface_data);
ddjvu_page_release(djvu_page);
return ZATHURA_ERROR_OK;
}
girara_list_t*
djvu_page_search_text(zathura_page_t* page, void* UNUSED(data), const char* text, zathura_error_t* error)
{
if (page == NULL || text == NULL || strlen(text) == 0) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
goto error_ret;
}
djvu_document_t* djvu_document = zathura_document_get_data(document);
djvu_page_text_t* page_text = djvu_page_text_new(djvu_document, page);
if (page_text == NULL) {
goto error_ret;
}
girara_list_t* results = djvu_page_text_search(page_text, text);
if (results == NULL) {
goto error_free;
}
djvu_page_text_free(page_text);
return results;
error_free:
if (page_text != NULL) {
djvu_page_text_free(page_text);
}
error_ret:
if (error != NULL && *error == ZATHURA_ERROR_OK) {
*error = ZATHURA_ERROR_UNKNOWN;
}
return NULL;
}
char*
pdf_page_get_text(zathura_page_t* page, void* data, zathura_rectangle_t rectangle, zathura_error_t* error)
{
mupdf_page_t* mupdf_page = data;
if (page == NULL || mupdf_page == NULL || mupdf_page->text == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
zathura_document_t* document = zathura_page_get_document(page);
mupdf_document_t* mupdf_document = zathura_document_get_data(document);
if (mupdf_page->extracted_text == false) {
mupdf_page_extract_text(mupdf_document, mupdf_page);
}
fz_point a = { rectangle.x1, rectangle.y1 };
fz_point b = { rectangle.x2, rectangle.y2 };
#ifdef _WIN32
return fz_copy_selection(mupdf_page->ctx, mupdf_page->text, a, b, 1);
#else
return fz_copy_selection(mupdf_page->ctx, mupdf_page->text, a, b, 0);
#endif
error_ret:
if (error != NULL && *error == ZATHURA_ERROR_OK) {
*error = ZATHURA_ERROR_UNKNOWN;
}
return NULL;
}
girara_list_t*
pdf_page_images_get(zathura_page_t* page, void* data, zathura_error_t* error)
{
mupdf_page_t* mupdf_page = data;
if (page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
girara_list_t* list = NULL;
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
goto error_ret;
}
mupdf_document_t* mupdf_document = zathura_document_get_data(document);
/* Setup image list */
list = girara_list_new();
if (list == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_OUT_OF_MEMORY;
}
goto error_free;
}
girara_list_set_free_function(list, (girara_free_function_t) pdf_zathura_image_free);
/* Extract images */
mupdf_page_extract_text(mupdf_document, mupdf_page);
fz_stext_block* block;
for (block = mupdf_page->text->first_block; block; block = block->next) {
if (block->type == FZ_STEXT_BLOCK_IMAGE) {
zathura_image_t* zathura_image = g_malloc(sizeof(zathura_image_t));
zathura_image->position.x1 = block->bbox.x0;
zathura_image->position.y1 = block->bbox.y0;
zathura_image->position.x2 = block->bbox.x1;
zathura_image->position.y2 = block->bbox.y1;
zathura_image->data = block->u.i.image;
girara_list_append(list, zathura_image);
}
}
return list;
error_free:
if (error != NULL && *error == ZATHURA_ERROR_OK) {
*error = ZATHURA_ERROR_UNKNOWN;
}
if (list != NULL) {
girara_list_free(list);
}
error_ret:
return NULL;
}
zathura_image_buffer_t*
djvu_page_render(zathura_page_t* page, void* UNUSED(data), zathura_error_t* error)
{
if (page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
return NULL;
}
/* calculate sizes */
unsigned int page_width = zathura_document_get_scale(document) * zathura_page_get_width(page);
unsigned int page_height = zathura_document_get_scale(document) * zathura_page_get_height(page);
if (page_width == 0 || page_height == 0) {
if (error != NULL) {
*error = ZATHURA_ERROR_UNKNOWN;
}
goto error_out;
}
/* init ddjvu render data */
djvu_document_t* djvu_document = zathura_document_get_data(document);
ddjvu_page_t* djvu_page = ddjvu_page_create_by_pageno(
djvu_document->document, zathura_page_get_index(page));
if (djvu_page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_UNKNOWN;
}
goto error_out;
}
while (!ddjvu_page_decoding_done(djvu_page)) {
handle_messages(djvu_document, true);
}
ddjvu_rect_t rrect = { 0, 0, page_width, page_height };
ddjvu_rect_t prect = { 0, 0, page_width, page_height };
zathura_image_buffer_t* image_buffer =
zathura_image_buffer_create(page_width, page_height);
if (image_buffer == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_OUT_OF_MEMORY;
}
goto error_free;
}
/* set rotation */
ddjvu_page_set_rotation(djvu_page, DDJVU_ROTATE_0);
/* render page */
ddjvu_page_render(djvu_page, DDJVU_RENDER_COLOR, &prect, &rrect,
djvu_document->format, 3 * page_width, (char*) image_buffer->data);
return image_buffer;
error_free:
ddjvu_page_release(djvu_page);
zathura_image_buffer_free(image_buffer);
error_out:
return NULL;
}
girara_list_t*
djvu_page_links_get(zathura_page_t* page, void* UNUSED(data), zathura_error_t* error)
{
if (page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
goto error_ret;
}
girara_list_t* list = girara_list_new2((girara_free_function_t) zathura_link_free);
if (list == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_OUT_OF_MEMORY;
}
goto error_ret;
}
djvu_document_t* djvu_document = zathura_document_get_data(document);
miniexp_t annotations = miniexp_nil;
while ((annotations = ddjvu_document_get_pageanno(djvu_document->document,
zathura_page_get_index(page))) == miniexp_dummy) {
handle_messages(djvu_document, true);
}
if (annotations == miniexp_nil) {
goto error_free;
}
miniexp_t* hyperlinks = ddjvu_anno_get_hyperlinks(annotations);
for (miniexp_t* iter = hyperlinks; *iter != NULL; iter++) {
if (miniexp_car(*iter) != miniexp_symbol("maparea")) {
continue;
}
miniexp_t inner = miniexp_cdr(*iter);
/* extract url information */
const char* target_string = NULL;
if (miniexp_caar(inner) == miniexp_symbol("url")) {
if (exp_to_str(miniexp_caddr(miniexp_car(inner)), &target_string) == false) {
continue;
}
} else {
if (exp_to_str(miniexp_car(inner), &target_string) == false) {
continue;
}
}
/* skip comment */
inner = miniexp_cdr(inner);
/* extract link area */
inner = miniexp_cdr(inner);
zathura_rectangle_t rect = { 0, 0, 0, 0 };
if (exp_to_rect(miniexp_car(inner), &rect) == false) {
continue;
}
/* update rect */
unsigned int page_height = zathura_page_get_height(page) / ZATHURA_DJVU_SCALE;
rect.x1 = rect.x1 * ZATHURA_DJVU_SCALE;
rect.x2 = rect.x2 * ZATHURA_DJVU_SCALE;
double tmp = rect.y1;
rect.y1 = (page_height - rect.y2) * ZATHURA_DJVU_SCALE;
rect.y2 = (page_height - tmp) * ZATHURA_DJVU_SCALE;
/* create zathura link */
zathura_link_type_t type = ZATHURA_LINK_INVALID;
zathura_link_target_t target = { ZATHURA_LINK_DESTINATION_UNKNOWN, NULL, 0, -1, -1, -1, -1, 0 };;
/* goto page */
if (target_string[0] == '#' && target_string[1] == 'p') {
type = ZATHURA_LINK_GOTO_DEST;
target.page_number = atoi(target_string + 2) - 1;
/* url or other? */
} else if (strstr(target_string, "//") != NULL) {
type = ZATHURA_LINK_URI;
target.value = (char*) target_string;
/* TODO: Parse all different links */
} else {
continue;
}
zathura_link_t* link = zathura_link_new(type, rect, target);
if (link != NULL) {
girara_list_append(list, link);
}
}
return list;
error_free:
if (list != NULL) {
girara_list_free(list);
}
error_ret:
return NULL;
}
char*
djvu_page_get_text(zathura_page_t* page, void* UNUSED(data), zathura_rectangle_t
rectangle, zathura_error_t* error)
{
if (page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
goto error_ret;
}
djvu_document_t* djvu_document = zathura_document_get_data(document);
djvu_page_text_t* page_text = djvu_page_text_new(djvu_document, page);
if (page_text == NULL) {
goto error_ret;
}
double tmp = 0;
double page_height = zathura_page_get_height(page);
double page_width = zathura_page_get_width(page);
switch (zathura_document_get_rotation(document)) {
case 90:
tmp = rectangle.x1;
rectangle.x1 = rectangle.y1;
rectangle.y1 = tmp;
tmp = rectangle.x2;
rectangle.x2 = rectangle.y2;
rectangle.y2 = tmp;
break;
case 180:
tmp = rectangle.x1;
rectangle.x1 = (page_width - rectangle.x2);
rectangle.x2 = (page_width - tmp);
break;
case 270:
tmp = rectangle.y2;
rectangle.y2 = (page_height - rectangle.x1);
rectangle.x1 = (page_width - tmp);
tmp = rectangle.y1;
rectangle.y1 = (page_height - rectangle.x2);
rectangle.x2 = (page_width - tmp);
break;
default:
tmp = rectangle.y1;
rectangle.y1 = (page_height - rectangle.y2);
rectangle.y2 = (page_height - tmp);
break;
}
/* adjust to scale */
rectangle.x1 /= ZATHURA_DJVU_SCALE;
rectangle.x2 /= ZATHURA_DJVU_SCALE;
rectangle.y1 /= ZATHURA_DJVU_SCALE;
rectangle.y2 /= ZATHURA_DJVU_SCALE;
char* text = djvu_page_text_select(page_text, rectangle);
djvu_page_text_free(page_text);
return text;
error_ret:
if (error != NULL && *error == ZATHURA_ERROR_OK) {
*error = ZATHURA_ERROR_UNKNOWN;
}
return NULL;
}