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

2007-07-26  Carlos Garcia Campos  <carlosgc@gnome.org>
	* backend/dvi/dvi-document.c: (dvi_document_file_exporter_begin),
	(dvi_document_file_exporter_do_page),
	(dvi_document_file_exporter_get_capabilities),
	(dvi_document_file_exporter_iface_init):
	* backend/ps/ps-document.c: (ps_document_file_exporter_begin),
	(ps_document_file_exporter_do_page),
	(ps_document_file_exporter_get_capabilities),
	(ps_document_file_exporter_iface_init):
	* backend/djvu/djvu-document.c:
	(djvu_document_file_exporter_begin),
	(djvu_document_file_exporter_end),
	(djvu_document_file_exporter_get_capabilities),
	(djvu_document_file_exporter_iface_init):
	* backend/tiff/tiff-document.c:
	(tiff_document_file_exporter_begin),
	(tiff_document_file_exporter_get_capabilities),
	(tiff_document_document_file_exporter_iface_init):
	* backend/pdf/ev-poppler.cc: (pdf_document_file_exporter_begin),
	(pdf_document_file_exporter_do_page),
	(pdf_document_file_exporter_get_capabilities),
	(pdf_document_file_exporter_iface_init):
	* libdocument/ev-file-exporter.[ch]: (ev_file_exporter_begin),
	(ev_file_exporter_get_capabilities):
	* shell/ev-print-job.c: (ev_print_job_use_print_dialog_settings),
	(idle_print_handler), (ev_print_job_print):
	* shell/ev-jobs.c: (ev_job_print_run):
	* shell/ev-window.c: (ev_window_print_send),
	(ev_window_print_range):
	Use capabilities to know which options should be offered by the
	print dialog depending on the document backend.

svn path=/trunk/; revision=2580

5 files changed, 93 insertions, 113 deletions

diff --git a/backend/djvu/djvu-document.c b/backend/djvu/djvu-document.c
index 88c6bc8..9b4ba82 100644
--- a/backend/djvu/djvu-document.c
+++ b/backend/djvu/djvu-document.c
@@ -441,30 +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
@@ -473,7 +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
@@ -484,29 +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
diff --git a/backend/dvi/dvi-document.c b/backend/dvi/dvi-document.c
index c85e4f5..b6f8325 100644
--- a/backend/dvi/dvi-document.c
+++ b/backend/dvi/dvi-document.c
@@ -362,28 +362,15 @@ dvi_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 }
 
 /* EvFileExporterIface */
-static gboolean
-dvi_document_file_exporter_format_supported (EvFileExporter      *exporter,
-                                              EvFileExporterFormat format)
-{
-        return (format == EV_FILE_FORMAT_PDF); /* only exporting to PDF is implemented. */
-}
-
 static void
-dvi_document_file_exporter_begin (EvFileExporter      *exporter,
-				   EvFileExporterFormat format,
-				   const char          *filename, /* for storing the temp pdf file */
-				   int                  first_page,
-				   int                  last_page,
-				   double               width,
-				   double               height,
-				   gboolean             duplex)
+dvi_document_file_exporter_begin (EvFileExporter        *exporter,
+				  EvFileExporterContext *fc)
 {
 	DviDocument *dvi_document = DVI_DOCUMENT(exporter);
 	
 	if (dvi_document->exporter_filename)
 		g_free (dvi_document->exporter_filename);	
-	dvi_document->exporter_filename = g_strdup(filename);
+	dvi_document->exporter_filename = g_strdup(fc->filename);
 	
 	if (dvi_document->exporter_opts) {
 		g_string_free (dvi_document->exporter_opts, TRUE);
@@ -392,7 +379,8 @@ dvi_document_file_exporter_begin (EvFileExporter      *exporter,
 }
 
 static void
-dvi_document_file_exporter_do_page (EvFileExporter *exporter, EvRenderContext *rc)
+dvi_document_file_exporter_do_page (EvFileExporter  *exporter,
+				    EvRenderContext *rc)
 {
        DviDocument *dvi_document = DVI_DOCUMENT(exporter);
 
@@ -423,22 +411,32 @@ dvi_document_file_exporter_end (EvFileExporter *exporter)
 	g_free(command_line);
 
 	if (success == FALSE) {
-		g_warning (_("Error: %s"), err->message);
+		g_warning ("Error: %s", err->message);
 	} else if (exit_stat != 0) {
-		g_warning (_("Error: dvipdfm exited with non-zero status."));
+		g_warning ("Error: dvipdfm exited with non-zero status.");
 	}
 
 	if (err)
 		g_error_free(err);
 }
 
+static EvFileExporterCapabilities
+dvi_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_PDF;
+}
+
 static void
 dvi_document_file_exporter_iface_init (EvFileExporterIface *iface)
 {
-        iface->format_supported = dvi_document_file_exporter_format_supported;
         iface->begin = dvi_document_file_exporter_begin;
         iface->do_page = dvi_document_file_exporter_do_page;
         iface->end = dvi_document_file_exporter_end;
+	iface->get_capabilities = dvi_document_file_exporter_get_capabilities;
 }
 
 #define RGB2ULONG(r,g,b) ((0xFF<<24)|(r<<16)|(g<<8)|(b))
diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc
index f96fdd4..4b6b114 100644
--- a/backend/pdf/ev-poppler.cc
+++ b/backend/pdf/ev-poppler.cc
@@ -1506,17 +1506,6 @@ pdf_document_find_iface_init (EvDocumentFindIface *iface)
         iface->cancel = pdf_document_find_cancel;
 }
 
-static const gboolean supported_formats[] = {
-	TRUE, /* EV_FILE_FORMAT_PS */
-#ifdef HAVE_CAIRO_PDF
-#ifdef HAVE_POPPLER_PAGE_RENDER
-	TRUE, /* EV_FILE_FORMAT_PDF */
-#else
-	FALSE, /* EV_FILE_FORMAT_PDF */
-#endif
-#endif
-};
-
 static void
 pdf_print_context_free (PdfPrintContext *ctx)
 {
@@ -1536,22 +1525,9 @@ pdf_print_context_free (PdfPrintContext *ctx)
 	g_free (ctx);
 }
 
-static gboolean
-pdf_document_file_exporter_format_supported (EvFileExporter      *exporter,
-					     EvFileExporterFormat format)
-{
-	return supported_formats[format];
-}
-
 static void
-pdf_document_file_exporter_begin (EvFileExporter      *exporter,
-				  EvFileExporterFormat format,
-				  const char          *filename,
-				  int                  first_page,
-				  int                  last_page,
-				  double               width,
-				  double               height,
-				  gboolean             duplex)
+pdf_document_file_exporter_begin (EvFileExporter        *exporter,
+				  EvFileExporterContext *fc)
 {
 	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 	PdfPrintContext *ctx;
@@ -1560,22 +1536,22 @@ pdf_document_file_exporter_begin (EvFileExporter      *exporter,
 		pdf_print_context_free (pdf_document->print_ctx);
 	pdf_document->print_ctx = g_new0 (PdfPrintContext, 1);
 	ctx = pdf_document->print_ctx;
-	ctx->format = format;
+	ctx->format = fc->format;
 	
-	switch (format) {
+	switch (fc->format) {
 	        case EV_FILE_FORMAT_PS:
 			ctx->ps_file = poppler_ps_file_new (pdf_document->document,
-							    filename, first_page,
-							    last_page - first_page + 1);
-			poppler_ps_file_set_paper_size (ctx->ps_file, width, height);
-			poppler_ps_file_set_duplex (ctx->ps_file, duplex);
+							    fc->filename, fc->first_page,
+							    fc->last_page - fc->first_page + 1);
+			poppler_ps_file_set_paper_size (ctx->ps_file, fc->paper_width, fc->paper_height);
+			poppler_ps_file_set_duplex (ctx->ps_file, fc->duplex);
 
 			break;
 	        case EV_FILE_FORMAT_PDF: {
 #ifdef HAVE_CAIRO_PDF
 			cairo_surface_t *surface;
 			
-			surface = cairo_pdf_surface_create (filename, width, height);
+			surface = cairo_pdf_surface_create (fc->filename, fc->paper_width, fc->paper_height);
 			ctx->pdf_cairo = cairo_create (surface);
 			cairo_surface_destroy (surface);
 #endif
@@ -1587,7 +1563,8 @@ pdf_document_file_exporter_begin (EvFileExporter      *exporter,
 }
 
 static void
-pdf_document_file_exporter_do_page (EvFileExporter *exporter, EvRenderContext *rc)
+pdf_document_file_exporter_do_page (EvFileExporter  *exporter,
+				    EvRenderContext *rc)
 {
 	PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 	PdfPrintContext *ctx = pdf_document->print_ctx;
@@ -1629,13 +1606,30 @@ pdf_document_file_exporter_end (EvFileExporter *exporter)
 	pdf_document->print_ctx = NULL;
 }
 
+static EvFileExporterCapabilities
+pdf_document_file_exporter_get_capabilities (EvFileExporter *exporter)
+{
+	return  (EvFileExporterCapabilities) (
+		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_SCALE |
+#ifdef HAVE_CAIRO_PDF
+#ifdef HAVE_POPPLER_PAGE_RENDER
+		EV_FILE_EXPORTER_CAN_GENERATE_PDF |
+#endif
+#endif
+		EV_FILE_EXPORTER_CAN_GENERATE_PS);
+}
+
 static void
 pdf_document_file_exporter_iface_init (EvFileExporterIface *iface)
 {
-	iface->format_supported = pdf_document_file_exporter_format_supported;
         iface->begin = pdf_document_file_exporter_begin;
         iface->do_page = pdf_document_file_exporter_do_page;
         iface->end = pdf_document_file_exporter_end;
+	iface->get_capabilities = pdf_document_file_exporter_get_capabilities;
 }
 
 static void
diff --git a/backend/ps/ps-document.c b/backend/ps/ps-document.c
index 0931fb9..5e63687 100644
--- a/backend/ps/ps-document.c
+++ b/backend/ps/ps-document.c
@@ -598,22 +598,9 @@ ps_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 }
 
 /* EvFileExporterIface */
-static gboolean
-ps_document_file_exporter_format_supported (EvFileExporter      *exporter,
-					    EvFileExporterFormat format)
-{
-	return (format == EV_FILE_FORMAT_PS);
-}
-
 static void
-ps_document_file_exporter_begin (EvFileExporter      *exporter,
-				 EvFileExporterFormat format,
-				 const char          *filename,
-				 int                  first_page,
-				 int                  last_page,
-				 double               width,
-				 double               height,
-				 gboolean             duplex)
+ps_document_file_exporter_begin (EvFileExporter        *exporter,
+				 EvFileExporterContext *fc)
 {
 	PSDocument *document = PS_DOCUMENT (exporter);
 
@@ -623,11 +610,12 @@ ps_document_file_exporter_begin (EvFileExporter      *exporter,
 		document->ps_export_pagelist = g_new0 (int, document->doc->numpages);
 	}
 
-	document->ps_export_filename = g_strdup (filename);
+	document->ps_export_filename = g_strdup (fc->filename);
 }
 
 static void
-ps_document_file_exporter_do_page (EvFileExporter *exporter, EvRenderContext *rc)
+ps_document_file_exporter_do_page (EvFileExporter  *exporter,
+				   EvRenderContext *rc)
 {
 	PSDocument *document = PS_DOCUMENT (exporter);
 	
@@ -653,11 +641,18 @@ ps_document_file_exporter_end (EvFileExporter *exporter)
 	}
 }
 
+static EvFileExporterCapabilities
+ps_document_file_exporter_get_capabilities (EvFileExporter *exporter)
+{
+	return  EV_FILE_EXPORTER_CAN_PAGE_SET |
+		EV_FILE_EXPORTER_CAN_GENERATE_PS;
+}
+
 static void
 ps_document_file_exporter_iface_init (EvFileExporterIface *iface)
 {
-	iface->format_supported = ps_document_file_exporter_format_supported;
 	iface->begin = ps_document_file_exporter_begin;
 	iface->do_page = ps_document_file_exporter_do_page;
 	iface->end = ps_document_file_exporter_end;
+	iface->get_capabilities = ps_document_file_exporter_get_capabilities;
 }
diff --git a/backend/tiff/tiff-document.c b/backend/tiff/tiff-document.c
index 8247c2a..59748d7 100644
--- a/backend/tiff/tiff-document.c
+++ b/backend/tiff/tiff-document.c
@@ -450,27 +450,13 @@ tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 }
 
 /* postscript exporter implementation */
-
-static gboolean
-tiff_document_file_exporter_format_supported (EvFileExporter      *exporter,
-					      EvFileExporterFormat format)
-{
-	return (format == EV_FILE_FORMAT_PS);
-}
-
 static void
-tiff_document_file_exporter_begin (EvFileExporter      *exporter,
-				   EvFileExporterFormat format,
-				   const char          *filename,
-				   int                  first_page,
-				   int                  last_page,
-				   double               width,
-				   double               height,
-				   gboolean             duplex)
+tiff_document_file_exporter_begin (EvFileExporter        *exporter,
+				   EvFileExporterContext *fc)
 {
 	TiffDocument *document = TIFF_DOCUMENT (exporter);
 
-	document->ps_export_ctx = tiff2ps_context_new(filename);
+	document->ps_export_ctx = tiff2ps_context_new(fc->filename);
 }
 
 static void
@@ -496,13 +482,23 @@ tiff_document_file_exporter_end (EvFileExporter *exporter)
 	tiff2ps_context_finalize(document->ps_export_ctx);
 }
 
+static EvFileExporterCapabilities
+tiff_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
 tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface)
 {
-	iface->format_supported = tiff_document_file_exporter_format_supported;
 	iface->begin = tiff_document_file_exporter_begin;
 	iface->do_page = tiff_document_file_exporter_do_page;
 	iface->end = tiff_document_file_exporter_end;
+	iface->get_capabilities = tiff_document_file_exporter_get_capabilities;
 }
 
 static void