Use capabilities to know which options should be offered by the print

[evince.git] / backend / djvu / djvu-document.c

diff --git a/backend/djvu/djvu-document.c b/backend/djvu/djvu-document.c
index a8f04254d8fd8374f1c5190b260622ea744cde3b..9b4ba825950be307f54eb3eb359a0c38c013c2ef 100644 (file)
--- a/backend/djvu/djvu-document.c
+++ b/backend/djvu/djvu-document.c
@@ -216,13 +216,14 @@ djvu_document_render (EvDocument      *document,
                      EvRenderContext *rc)
 {
        DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
-       cairo_surface_t *surface, *rotated_surface;
+       cairo_surface_t *surface;
        gchar *pixels;
        gint   rowstride;
        ddjvu_rect_t rrect;
        ddjvu_rect_t prect;
        ddjvu_page_t *d_page;
-       double page_width, page_height;
+       ddjvu_page_rotation_t rotation;
+       double page_width, page_height, tmp;
        static const cairo_user_data_key_t key;
 
        d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
@@ -232,6 +233,29 @@ djvu_document_render (EvDocument      *document,
 
        page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
        page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
+       
+       switch (rc->rotation) {
+               case 90:
+                       rotation = DDJVU_ROTATE_90;
+                       tmp = page_height;
+                       page_height = page_width;
+                       page_width = tmp;
+                       
+                       break;
+               case 180:
+                       rotation = DDJVU_ROTATE_180;
+                       
+                       break;
+               case 270:
+                       rotation = DDJVU_ROTATE_270;
+                       tmp = page_height;
+                       page_height = page_width;
+                       page_width = tmp;
+                       
+                       break;
+               default:
+                       rotation = DDJVU_ROTATE_0;
+       }
 
        rowstride = page_width * 4;
        pixels = (gchar *) g_malloc (page_height * rowstride);
@@ -248,6 +272,8 @@ djvu_document_render (EvDocument      *document,
        prect.h = page_height;
        rrect = prect;
 
+       ddjvu_page_set_rotation (d_page, rotation);
+       
        ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
                           &prect,
                           &rrect,
@@ -255,13 +281,7 @@ djvu_document_render (EvDocument      *document,
                           rowstride,
                           pixels);
 
-       rotated_surface = ev_document_misc_surface_rotate_and_scale (surface,
-                                                                    page_width,
-                                                                    page_height,
-                                                                    rc->rotation);
-       cairo_surface_destroy (surface);
-
-       return rotated_surface;
+       return surface;
 }
 
 static void
@@ -421,30 +441,17 @@ djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 }
 
 /* EvFileExporterIface */
-static gboolean
-djvu_document_file_exporter_format_supported (EvFileExporter      *exporter,
-                                             EvFileExporterFormat format)
-{
-        return (format == EV_FILE_FORMAT_PS); // only exporting to PS is implemented.
-}
-
 static void
-djvu_document_file_exporter_begin (EvFileExporter      *exporter,
-                                  EvFileExporterFormat format,
-                                  const char          *filename, /* for storing the temp ps file */
-                                  int                  first_page,
-                                  int                  last_page,
-                                  double               width,
-                                  double               height,
-                                  gboolean             duplex)
+djvu_document_file_exporter_begin (EvFileExporter        *exporter,
+                                  EvFileExporterContext *fc)
 {
        DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
        
        if (djvu_document->ps_filename)
                g_free (djvu_document->ps_filename);    
-       djvu_document->ps_filename = g_strdup(filename);
+       djvu_document->ps_filename = g_strdup (fc->filename);
 
-       g_string_assign(djvu_document->opts, "-page=");
+       g_string_assign (djvu_document->opts, "-page=");
 }
 
 static void
@@ -453,7 +460,7 @@ djvu_document_file_exporter_do_page (EvFileExporter  *exporter,
 {
        DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
        
-       g_string_append_printf(djvu_document->opts, "%d,", (rc->page) + 1); 
+       g_string_append_printf (djvu_document->opts, "%d,", (rc->page) + 1); 
 }
 
 static void
@@ -464,29 +471,39 @@ djvu_document_file_exporter_end (EvFileExporter *exporter)
 
        DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 
-       FILE *fn = fopen(djvu_document->ps_filename, "w");
+       FILE *fn = fopen (djvu_document->ps_filename, "w");
        if (fn == NULL) {
-               g_warning(_("Cannot open file “%s”."), djvu_document->ps_filename);
+               g_warning ("Cannot open file “%s”.", djvu_document->ps_filename);
                return;
        }
        
        d_optv[0] = djvu_document->opts->str; 
 
        ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
-       while (!ddjvu_job_done(job) ) { 
+       while (!ddjvu_job_done(job)) {  
                djvu_handle_events (djvu_document, TRUE);
        }
 
        fclose(fn); 
 }
 
+static EvFileExporterCapabilities
+djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter)
+{
+       return  EV_FILE_EXPORTER_CAN_PAGE_SET |
+               EV_FILE_EXPORTER_CAN_COPIES |
+               EV_FILE_EXPORTER_CAN_COLLATE |
+               EV_FILE_EXPORTER_CAN_REVERSE |
+               EV_FILE_EXPORTER_CAN_GENERATE_PS;
+}
+
 static void
 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
 {
-        iface->format_supported = djvu_document_file_exporter_format_supported;
         iface->begin = djvu_document_file_exporter_begin;
         iface->do_page = djvu_document_file_exporter_do_page;
         iface->end = djvu_document_file_exporter_end;
+       iface->get_capabilities = djvu_document_file_exporter_get_capabilities;
 }
 
 static void