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authorJose Aliste <jose.aliste@gmail.com>2010-06-27 10:12:15 (GMT)
committer Carlos Garcia Campos <carlosgc@gnome.org>2010-06-27 10:12:15 (GMT)
commita3a90743203a26d3fc71f0d9ba58aeb645279d04 (patch)
tree68fd81e37ce056c6fc64178be48688400a898a17 /libdocument
parent76dc886f8488897f3ebf1506ab671f29739607ff (diff)
[libdocument] Add synctex methods to search backward and forward
Diffstat (limited to 'libdocument')
-rw-r--r--libdocument/Makefile.am12
-rw-r--r--libdocument/ev-document.c148
-rw-r--r--libdocument/ev-document.h26
-rw-r--r--libdocument/ev-mapping.h7
4 files changed, 174 insertions, 19 deletions
diff --git a/libdocument/Makefile.am b/libdocument/Makefile.am
index 2d74540..dae6953 100644
--- a/libdocument/Makefile.am
+++ b/libdocument/Makefile.am
@@ -100,9 +100,10 @@ libevdocument_la_CPPFLAGS = \
$(AM_CPPFLAGS)
libevdocument_la_CFLAGS = \
- $(LIBDOCUMENT_CFLAGS) \
- $(WARN_CFLAGS) \
- $(DISABLE_DEPRECATED) \
+ $(LIBDOCUMENT_CFLAGS) \
+ -I$(top_srcdir)/cut-n-paste/synctex \
+ $(WARN_CFLAGS) \
+ $(DISABLE_DEPRECATED) \
$(AM_CFLAGS)
libevdocument_la_LDFLAGS = \
@@ -111,7 +112,10 @@ libevdocument_la_LDFLAGS = \
-export-symbols-regex "^ev_*" \
$(AM_LDFLAGS)
-libevdocument_la_LIBADD = $(LIBDOCUMENT_LIBS)
+libevdocument_la_LIBADD = \
+ $(LIBDOCUMENT_LIBS) \
+ $(top_builddir)/cut-n-paste/synctex/libsynctex.la
+
BUILT_SOURCES = \
ev-document-type-builtins.c \
diff --git a/libdocument/ev-document.c b/libdocument/ev-document.c
index 09f5887..1747bf1 100644
--- a/libdocument/ev-document.c
+++ b/libdocument/ev-document.c
@@ -25,6 +25,7 @@
#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))
@@ -53,16 +54,19 @@ struct _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;
@@ -122,6 +126,11 @@ ev_document_finalize (GObject *object)
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);
}
@@ -314,6 +323,16 @@ ev_document_load (EvDocument *document,
}
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;
@@ -348,6 +367,119 @@ ev_document_get_page (EvDocument *document,
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)
{
diff --git a/libdocument/ev-document.h b/libdocument/ev-document.h
index 68b3307..578cc7f 100644
--- a/libdocument/ev-document.h
+++ b/libdocument/ev-document.h
@@ -65,6 +65,7 @@ typedef struct {
} EvPoint;
typedef struct _EvRectangle EvRectangle;
+typedef struct _EvMapping EvMapping;
typedef struct _EvDocumentBackendInfo EvDocumentBackendInfo;
struct _EvDocumentBackendInfo
@@ -73,6 +74,12 @@ struct _EvDocumentBackendInfo
const gchar *version;
};
+typedef struct {
+ const gchar *filename;
+ gint line;
+ gint col;
+} EvSourceLink;
+
struct _EvDocument
{
GObject base;
@@ -105,6 +112,7 @@ struct _EvDocumentClass
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;
@@ -157,6 +165,19 @@ gboolean ev_document_has_text_page_labels (EvDocument *document);
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);
@@ -175,6 +196,11 @@ EvRectangle *ev_rectangle_new (void);
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()).
diff --git a/libdocument/ev-mapping.h b/libdocument/ev-mapping.h
index 2a3c130..b6024c5 100644
--- a/libdocument/ev-mapping.h
+++ b/libdocument/ev-mapping.h
@@ -29,13 +29,6 @@
G_BEGIN_DECLS
-typedef struct _EvMapping EvMapping;
-
-struct _EvMapping {
- EvRectangle area;
- gpointer data;
-};
-
EvMapping *ev_mapping_list_find (GList *mapping_list,
gconstpointer data);
EvMapping *ev_mapping_list_find_custom (GList *mapping_list,