Add EvPage so that we can hold a reference to the backend page. Form

[evince.git] / backend / ps / ev-spectre.c

diff --git a/backend/ps/ev-spectre.c b/backend/ps/ev-spectre.c
index 6fe58692e1630f03d9e7047aca10c11fe6588c9b..54b595700551c39219ee7de47b2cf1ff1d4c5a21 100644 (file)
--- a/backend/ps/ev-spectre.c
+++ b/backend/ps/ev-spectre.c
@@ -164,6 +164,22 @@ ps_document_get_n_pages (EvDocument *document)
        return spectre_document_get_n_pages (ps->doc);
 }
 
+static EvPage *
+ps_document_get_page (EvDocument *document,
+                     gint        index)
+{
+       PSDocument  *ps = PS_DOCUMENT (document);
+       SpectrePage *ps_page;
+       EvPage      *page;
+
+       ps_page = spectre_document_get_page (ps->doc, index);
+       page = ev_page_new (index);
+       page->backend_page = (EvBackendPage)ps_page;
+       page->backend_destroy_func = (EvBackendPageDestroyFunc)spectre_page_free;
+
+       return page;
+}
+
 static gint
 get_page_rotation (SpectrePage *page)
 {
@@ -184,17 +200,17 @@ get_page_rotation (SpectrePage *page)
 
 static void
 ps_document_get_page_size (EvDocument *document,
-                          int         page,
+                          EvPage     *page,
                           double     *width,
                           double     *height)
 {
-       PSDocument  *ps = PS_DOCUMENT (document);
        SpectrePage *ps_page;
        gdouble      page_width, page_height;
        gint         pwidth, pheight;
        gint         rotate;
 
-       ps_page = spectre_document_get_page (ps->doc, page);
+       ps_page = (SpectrePage *)page->backend_page;
+
        spectre_page_get_size (ps_page, &pwidth, &pheight);
 
        rotate = get_page_rotation (ps_page);
@@ -206,8 +222,6 @@ ps_document_get_page_size (EvDocument *document,
                page_height = pheight;
        }
 
-       spectre_page_free (ps_page);
-       
        if (width) {
                *width = page_width;
        }
@@ -219,17 +233,9 @@ ps_document_get_page_size (EvDocument *document,
 
 static char *
 ps_document_get_page_label (EvDocument *document,
-                           int         page)
+                           EvPage     *page)
 {
-       PSDocument  *ps = PS_DOCUMENT (document);
-       SpectrePage *ps_page;
-       gchar       *label;
-
-       ps_page = spectre_document_get_page (ps->doc, page);
-       label = g_strdup (spectre_page_get_label (ps_page));
-       spectre_page_free (ps_page);
-       
-       return label;
+       return g_strdup (spectre_page_get_label ((SpectrePage *)page->backend_page));
 }
 
 static EvDocumentInfo *
@@ -268,7 +274,6 @@ static cairo_surface_t *
 ps_document_render (EvDocument      *document,
                    EvRenderContext *rc)
 {
-       PSDocument           *ps = PS_DOCUMENT (document);
        SpectrePage          *ps_page;
        SpectreRenderContext *src;
        gint                  width_points;
@@ -281,7 +286,8 @@ ps_document_render (EvDocument      *document,
        cairo_surface_t      *surface;
        static const cairo_user_data_key_t key;
 
-       ps_page = spectre_document_get_page (ps->doc, rc->page);
+       ps_page = (SpectrePage *)rc->page->backend_page;
+       
        spectre_page_get_size (ps_page, &width_points, &height_points);
 
        width = (gint) ((width_points * rc->scale) + 0.5);
@@ -297,20 +303,16 @@ ps_document_render (EvDocument      *document,
        spectre_render_context_free (src);
 
        if (!data) {
-               spectre_page_free (ps_page);
                return NULL;
        }
 
        if (spectre_page_status (ps_page)) {
                g_warning (spectre_status_to_string (spectre_page_status (ps_page)));
                g_free (data);
-               spectre_page_free (ps_page);
                
                return NULL;
        }
 
-       spectre_page_free (ps_page);
-
        if (rotation == 90 || rotation == 270) {
                swidth = height;
                sheight = width;
@@ -334,6 +336,7 @@ ps_document_document_iface_init (EvDocumentIface *iface)
        iface->load = ps_document_load;
        iface->save = ps_document_save;
        iface->get_n_pages = ps_document_get_n_pages;
+       iface->get_page = ps_document_get_page;
        iface->get_page_size = ps_document_get_page_size;
        iface->get_page_label = ps_document_get_page_label;
        iface->get_info = ps_document_get_info;
@@ -433,7 +436,7 @@ ps_document_file_exporter_do_page (EvFileExporter  *exporter,
 {
        PSDocument *ps = PS_DOCUMENT (exporter);
 
-       spectre_exporter_do_page (ps->exporter, rc->page);
+       spectre_exporter_do_page (ps->exporter, rc->page->index);
 }
 
 static void