X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=libdocument%2Fev-document.h;h=367d6e6af39a518ab304fc98954c3ef05aeb8e9b;hb=14def5e0c1c11cee1523e10c72df74f4cf5e451d;hp=833491e25a0816279b908ada6f9075f6d86abe3c;hpb=e17522f07726a89adbe1a2402ae4920b2a8b4f38;p=evince.git

diff --git a/libdocument/ev-document.h b/libdocument/ev-document.h
index 833491e2..367d6e6a 100644
--- a/libdocument/ev-document.h
+++ b/libdocument/ev-document.h
@@ -28,6 +28,7 @@
 #include <cairo.h>
 
 #include "ev-document-info.h"
+#include "ev-page.h"
 #include "ev-render-context.h"
 
 G_BEGIN_DECLS
@@ -78,16 +79,14 @@ struct _EvDocumentIface
                                                const char      *uri,
                                                GError         **error);
         int               (* get_n_pages)     (EvDocument      *document);
+	EvPage          * (* get_page)        (EvDocument      *document,
+					       gint             index);
         void              (* get_page_size)   (EvDocument      *document,
-                                               int              page,
+                                               EvPage          *page,
                                                double          *width,
                                                double          *height);
         char            * (* get_page_label)  (EvDocument      *document,
-                                               int              page);
-        gboolean          (* can_get_text)    (EvDocument      *document);
-        char            * (* get_text)        (EvDocument      *document,
-                                               int              page,
-                                               EvRectangle     *rect);
+                                               EvPage          *page);
         gboolean          (* has_attachments) (EvDocument      *document);
         GList           * (* get_attachments) (EvDocument      *document);
         cairo_surface_t * (* render)          (EvDocument      *document,
@@ -102,11 +101,13 @@ GQuark           ev_document_error_quark      (void);
 GMutex          *ev_document_get_doc_mutex    (void);
 void             ev_document_doc_mutex_lock   (void);
 void             ev_document_doc_mutex_unlock (void);
+gboolean         ev_document_doc_mutex_trylock(void);
 
 /* FontConfig mutex */
 GMutex          *ev_document_get_fc_mutex     (void);
 void             ev_document_fc_mutex_lock    (void);
 void             ev_document_fc_mutex_unlock  (void);
+gboolean         ev_document_fc_mutex_trylock (void);
 
 EvDocumentInfo  *ev_document_get_info         (EvDocument      *document);
 gboolean         ev_document_load             (EvDocument      *document,
@@ -116,23 +117,105 @@ gboolean         ev_document_save             (EvDocument      *document,
                                                const char      *uri,
                                                GError         **error);
 int              ev_document_get_n_pages      (EvDocument      *document);
+EvPage          *ev_document_get_page         (EvDocument      *document,
+					       gint             index);
 void             ev_document_get_page_size    (EvDocument      *document,
-                                               int              page,
+                                               EvPage          *page,
                                                double          *width,
                                                double          *height);
 char            *ev_document_get_page_label   (EvDocument      *document,
-                                               int              page);
-gboolean         ev_document_can_get_text     (EvDocument      *document);
-char            *ev_document_get_text         (EvDocument      *document,
-                                               int              page,
-                                               EvRectangle     *rect);
+                                               EvPage          *page);
 gboolean         ev_document_has_attachments  (EvDocument      *document);
 GList           *ev_document_get_attachments  (EvDocument      *document);
 cairo_surface_t *ev_document_render           (EvDocument      *document,
                                                EvRenderContext *rc);
 
-gint            ev_rect_cmp                   (EvRectangle    *a,
-                                               EvRectangle    *b);
+gint            ev_rect_cmp                   (EvRectangle     *a,
+                                               EvRectangle     *b);
+
+/* 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()).
+ * usage example:
+ * EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document,
+ *                          EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
+ *                                                 pdf_document_document_thumbnails_iface_init));
+ */
+#define EV_BACKEND_IMPLEMENT_INTERFACE(TYPE_IFACE, iface_init) {                \
+	const GInterfaceInfo g_implement_interface_info = {                     \
+		(GInterfaceInitFunc) iface_init, NULL, NULL                     \
+	};                                                                      \
+	g_type_module_add_interface (module,                                    \
+				     g_define_type_id,                          \
+				     TYPE_IFACE,                                \
+				     &g_implement_interface_info);              \
+}
+
+/*
+ * Utility macro used to register backends
+ *
+ * use: EV_BACKEND_REGISTER_WITH_CODE(BackendName, backend_name, CODE)
+ */
+#define EV_BACKEND_REGISTER_WITH_CODE(BackendName, backend_name, CODE)	        \
+										\
+static GType g_define_type_id = 0;						\
+										\
+GType										\
+backend_name##_get_type (void)							\
+{										\
+	return g_define_type_id;						\
+}										\
+										\
+static void     backend_name##_init              (BackendName        *self);	\
+static void     backend_name##_class_init        (BackendName##Class *klass);	\
+static gpointer backend_name##_parent_class = NULL;				\
+static void     backend_name##_class_intern_init (gpointer klass)		\
+{										\
+	backend_name##_parent_class = g_type_class_peek_parent (klass);		\
+	backend_name##_class_init ((BackendName##Class *) klass);		\
+}										\
+										\
+G_MODULE_EXPORT GType								\
+register_evince_backend (GTypeModule *module)					\
+{										\
+	static const GTypeInfo our_info = {  				        \
+		sizeof (BackendName##Class),					\
+		NULL, /* base_init */						\
+		NULL, /* base_finalize */					\
+		(GClassInitFunc) backend_name##_class_intern_init,		\
+		NULL,								\
+		NULL, /* class_data */						\
+		sizeof (BackendName),						\
+		0, /* n_preallocs */						\
+		(GInstanceInitFunc) backend_name##_init				\
+	};									\
+										\
+	/* Initialise the i18n stuff */						\
+	bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR);			\
+	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");			\
+                                                                                \
+	g_define_type_id = g_type_module_register_type (module,		        \
+					    G_TYPE_OBJECT,			\
+					    #BackendName,			\
+					    &our_info,				\
+					   (GTypeFlags)0);	                \
+							                        \
+	EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,                       \
+                               backend_name##_document_iface_init);             \
+										\
+	CODE									\
+										\
+	return g_define_type_id;						\
+}
+
+/*
+ * Utility macro used to register backend
+ *
+ * use: EV_BACKEND_REGISTER(BackendName, backend_name)
+ */
+#define EV_BACKEND_REGISTER(BackendName, backend_name)			\
+	EV_BACKEND_REGISTER_WITH_CODE(BackendName, backend_name, ;)
+
 G_END_DECLS
 
 #endif /* EV_DOCUMENT_H */