#include <string.h>
#include "ev-document.h"
+#include "synctex_parser.h"
#define EV_DOCUMENT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EV_TYPE_DOCUMENT, EvDocumentPrivate))
gchar **page_labels;
EvPageSize *page_sizes;
EvDocumentInfo *info;
+
+ synctex_scanner_t synctex_scanner;
};
-static gint _ev_document_get_n_pages (EvDocument *document);
-static void _ev_document_get_page_size (EvDocument *document,
- EvPage *page,
- double *width,
- double *height);
-static gchar *_ev_document_get_page_label (EvDocument *document,
- EvPage *page);
-static EvDocumentInfo *_ev_document_get_info (EvDocument *document);
+static gint _ev_document_get_n_pages (EvDocument *document);
+static void _ev_document_get_page_size (EvDocument *document,
+ EvPage *page,
+ double *width,
+ double *height);
+static gchar *_ev_document_get_page_label (EvDocument *document,
+ EvPage *page);
+static EvDocumentInfo *_ev_document_get_info (EvDocument *document);
+static gboolean _ev_document_support_synctex (EvDocument *document);
GMutex *ev_doc_mutex = NULL;
GMutex *ev_fc_mutex = NULL;
document->priv->info = NULL;
}
+ if (document->priv->synctex_scanner) {
+ synctex_scanner_free (document->priv->synctex_scanner);
+ document->priv->synctex_scanner = NULL;
+ }
+
G_OBJECT_CLASS (ev_document_parent_class)->finalize (object);
}
}
priv->info = _ev_document_get_info (document);
+ if (_ev_document_support_synctex (document)) {
+ gchar *filename;
+
+ filename = g_filename_from_uri (uri, NULL, NULL);
+ if (filename != NULL) {
+ priv->synctex_scanner =
+ synctex_scanner_new_with_output_file (filename, NULL, 1);
+ g_free (filename);
+ }
+ }
}
return retval;
return klass->get_page (document, index);
}
+static gboolean
+_ev_document_support_synctex (EvDocument *document)
+{
+ EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
+
+ return klass->support_synctex ? klass->support_synctex (document) : FALSE;
+}
+
+gboolean
+ev_document_has_synctex (EvDocument *document)
+{
+ g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
+
+ return document->priv->synctex_scanner != NULL;
+}
+
+/**
+ * ev_document_synctex_backward_search:
+ * @document:
+ * @page: the target page
+ * @x:
+ * @y:
+ *
+ * Peforms a Synctex backward search to obtain the TeX input file, line and
+ * (possibly) column corresponding to the position (@x,@y) (in 72dpi
+ * coordinates) in the @page of @document.
+ *
+ * Returns: A pointer to the EvSourceLink structure that holds the result. @NULL if synctex
+ * is not enabled for the document or no result is found.
+ * The EvSourceLink pointer should be freed with g_free after it is used.
+ */
+EvSourceLink *
+ev_document_synctex_backward_search (EvDocument *document,
+ gint page_index,
+ gfloat x,
+ gfloat y)
+{
+ EvSourceLink *result = NULL;
+ synctex_scanner_t scanner;
+
+ g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
+
+ scanner = document->priv->synctex_scanner;
+ if (!scanner)
+ return NULL;
+
+ if (synctex_edit_query (scanner, page_index + 1, x, y) > 0) {
+ synctex_node_t node;
+
+ /* We assume that a backward search returns either zero or one result_node */
+ node = synctex_next_result (scanner);
+ if (node != NULL) {
+ result = g_new (EvSourceLink, 1);
+ result->filename = synctex_scanner_get_name (scanner,
+ synctex_node_tag (node));
+ result->line = synctex_node_line (node);
+ result->col = synctex_node_column (node);
+ }
+ }
+
+ return result;
+}
+
+/**
+ * ev_document_synctex_forward_search:
+ * @document:
+ * @filename: the source filename
+ * @line: line number in the source file
+ * @col: column number in the source file
+ *
+ * Peforms a Synctex forward search to obtain the area in the document
+ * corresponding to the position @line and @column number in the source Tex file
+ *
+ * Returns: An EvMapping with the page number and area corresponfing to
+ * the given line in the source file. It must be free with g_free when done
+ */
+EvMapping *
+ev_document_synctex_forward_search (EvDocument *document,
+ const gchar *filename,
+ gint line,
+ gint col)
+{
+ EvMapping *result = NULL;
+ synctex_scanner_t scanner;
+
+ g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
+
+ scanner = document->priv->synctex_scanner;
+ if (!scanner)
+ return NULL;
+
+ if (synctex_display_query (scanner, filename, line, col) > 0) {
+ synctex_node_t node;
+ gint page;
+
+ if ((node = synctex_next_result (scanner))) {
+ result = g_new (EvMapping, 1);
+
+ page = synctex_node_page (node) - 1;
+ result->data = GINT_TO_POINTER (page);
+
+ result->area.x1 = synctex_node_box_visible_h (node);
+ result->area.y1 = synctex_node_box_visible_v (node) -
+ synctex_node_box_visible_height (node);
+ result->area.x2 = synctex_node_box_visible_width (node) + result->area.x1;
+ result->area.y2 = synctex_node_box_visible_depth (node) +
+ synctex_node_box_visible_height (node) + result->area.y1;
+ }
+ }
+
+ return result;
+}
+
static gint
_ev_document_get_n_pages (EvDocument *document)
{
} EvPoint;
typedef struct _EvRectangle EvRectangle;
+typedef struct _EvMapping EvMapping;
typedef struct _EvDocumentBackendInfo EvDocumentBackendInfo;
struct _EvDocumentBackendInfo
const gchar *version;
};
+typedef struct {
+ const gchar *filename;
+ gint line;
+ gint col;
+} EvSourceLink;
+
struct _EvDocument
{
GObject base;
EvDocumentInfo * (* get_info) (EvDocument *document);
gboolean (* get_backend_info)(EvDocument *document,
EvDocumentBackendInfo *info);
+ gboolean (* support_synctex) (EvDocument *document);
};
GType ev_document_get_type (void) G_GNUC_CONST;
gboolean ev_document_find_page_by_label (EvDocument *document,
const gchar *page_label,
gint *page_index);
+gboolean ev_document_has_synctex (EvDocument *document);
+
+EvSourceLink *ev_document_synctex_backward_search
+ (EvDocument *document,
+ gint page_index,
+ gfloat x,
+ gfloat y);
+
+EvMapping *ev_document_synctex_forward_search
+ (EvDocument *document,
+ const gchar *filename,
+ gint line,
+ gint col);
gint ev_rect_cmp (EvRectangle *a,
EvRectangle *b);
EvRectangle *ev_rectangle_copy (EvRectangle *ev_rect);
void ev_rectangle_free (EvRectangle *ev_rect);
+struct _EvMapping {
+ EvRectangle area;
+ gpointer data;
+};
+
/* convenience macro to ease interface addition in the CODE
* section of EV_BACKEND_REGISTER_WITH_CODE (this macro relies on
* the g_define_type_id present within EV_BACKEND_REGISTER_WITH_CODE()).
https://www.fi.muni.cz/~kas/git / evince.git / commitdiff