X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=backend%2Ftiff%2Ftiff-document.c;h=1be2aecebfec467f99334b09236031d8bd97ff50;hb=38c1b9aab8bfb41de6dc07df26fd6743a63ea015;hp=9348ed4efb68e893fe6cb03b707970ca1269da8d;hpb=1d6150237848b4c1fede94ce23baa4fd8870fd93;p=evince.git

diff --git a/backend/tiff/tiff-document.c b/backend/tiff/tiff-document.c
index 9348ed4e..1be2aece 100644
--- a/backend/tiff/tiff-document.c
+++ b/backend/tiff/tiff-document.c
@@ -14,30 +14,34 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 /* FIXME: Should probably buffer calls to libtiff with TIFFSetWarningHandler
  */
 
+#include "config.h"
+
+#include <config.h>
 #include <stdio.h>
 #include <glib.h>
+#include <glib/gi18n-lib.h>
 
 #include "tiffio.h"
 #include "tiff2ps.h"
 #include "tiff-document.h"
 #include "ev-document-misc.h"
-#include "ev-document-thumbnails.h"
 #include "ev-file-exporter.h"
+#include "ev-file-helpers.h"
 
 struct _TiffDocumentClass
 {
-  GObjectClass parent_class;
+  EvDocumentClass parent_class;
 };
 
 struct _TiffDocument
 {
-  GObject parent_instance;
+  EvDocument parent_instance;
 
   TIFF *tiff;
   gint n_pages;
@@ -48,17 +52,12 @@ struct _TiffDocument
 
 typedef struct _TiffDocumentClass TiffDocumentClass;
 
-static void tiff_document_document_iface_init (EvDocumentIface *iface);
-static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
-static void tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface);
-
-G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT,
-                         { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
-						  tiff_document_document_iface_init);
-			   G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
-						  tiff_document_document_thumbnails_iface_init);
-			   G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
-						  tiff_document_document_file_exporter_iface_init);
+static void tiff_document_document_file_exporter_iface_init (EvFileExporterInterface *iface);
+
+EV_BACKEND_REGISTER_WITH_CODE (TiffDocument, tiff_document,
+			 {
+			   EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
+							   tiff_document_document_file_exporter_iface_init);
 			 });
 
 static TIFFErrorHandler orig_error_handler = NULL;
@@ -87,13 +86,11 @@ tiff_document_load (EvDocument  *document,
 	gchar *filename;
 	TIFF *tiff;
 	
-	push_handlers ();
 	filename = g_filename_from_uri (uri, NULL, error);
-	if (!filename) {
-		pop_handlers ();
+	if (!filename)
 		return FALSE;
-	}
 	
+	push_handlers ();
 	tiff = TIFFOpen (filename, "r");
 	if (tiff) {
 		guint32 w, h;
@@ -105,6 +102,13 @@ tiff_document_load (EvDocument  *document,
 	
 	if (!tiff) {
 		pop_handlers ();
+
+    		g_set_error_literal (error,
+				     EV_DOCUMENT_ERROR,
+				     EV_DOCUMENT_ERROR_INVALID,
+				     _("Invalid document"));
+
+		g_free (filename);
 		return FALSE;
 	}
 	
@@ -150,10 +154,32 @@ tiff_document_get_n_pages (EvDocument  *document)
 }
 
 static void
-tiff_document_get_page_size (EvDocument   *document,
-			     int           page,
-			     double       *width,
-			     double       *height)
+tiff_document_get_resolution (TiffDocument *tiff_document,
+			      gfloat       *x_res,
+			      gfloat       *y_res)
+{
+	gfloat x = 72.0, y = 72.0;
+	gushort unit;
+	
+	if (TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x) &&
+	    TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y)) {
+		if (TIFFGetFieldDefaulted (tiff_document->tiff, TIFFTAG_RESOLUTIONUNIT, &unit)) {
+			if (unit == RESUNIT_CENTIMETER) {
+				x *= 2.54;
+				y *= 2.54;
+			}
+		}
+	}
+
+	*x_res = x;
+	*y_res = y;
+}
+
+static void
+tiff_document_get_page_size (EvDocument *document,
+			     EvPage     *page,
+			     double     *width,
+			     double     *height)
 {
 	guint32 w, h;
 	gfloat x_res, y_res;
@@ -163,15 +189,14 @@ tiff_document_get_page_size (EvDocument   *document,
 	g_return_if_fail (tiff_document->tiff != NULL);
 	
 	push_handlers ();
-	if (TIFFSetDirectory (tiff_document->tiff, page) != 1) {
+	if (TIFFSetDirectory (tiff_document->tiff, page->index) != 1) {
 		pop_handlers ();
 		return;
 	}
 	
 	TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &w);
 	TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &h);
-	TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res);
-	TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res);
+	tiff_document_get_resolution (tiff_document, &x_res, &y_res);
 	h = h * (x_res / y_res);
 	
 	*width = w;
@@ -180,24 +205,26 @@ tiff_document_get_page_size (EvDocument   *document,
 	pop_handlers ();
 }
 
-static GdkPixbuf *
-tiff_document_render_pixbuf (EvDocument      *document,
-			     EvRenderContext *rc)
+static cairo_surface_t *
+tiff_document_render (EvDocument      *document,
+		      EvRenderContext *rc)
 {
 	TiffDocument *tiff_document = TIFF_DOCUMENT (document);
 	int width, height;
 	float x_res, y_res;
 	gint rowstride, bytes;
 	guchar *pixels = NULL;
-	GdkPixbuf *pixbuf;
-	GdkPixbuf *scaled_pixbuf;
-	GdkPixbuf *rotated_pixbuf;
+	guchar *p;
+	int orientation;
+	cairo_surface_t *surface;
+	cairo_surface_t *rotated_surface;
+	static const cairo_user_data_key_t key;
 	
 	g_return_val_if_fail (TIFF_IS_DOCUMENT (document), NULL);
 	g_return_val_if_fail (tiff_document->tiff != NULL, NULL);
   
 	push_handlers ();
-	if (TIFFSetDirectory (tiff_document->tiff, rc->page) != 1) {
+	if (TIFFSetDirectory (tiff_document->tiff, rc->page->index) != 1) {
 		pop_handlers ();
 		return NULL;
 	}
@@ -212,22 +239,111 @@ tiff_document_render_pixbuf (EvDocument      *document,
 		return NULL;
 	}
 
-	if (!TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res)) {
+	if (! TIFFGetField (tiff_document->tiff, TIFFTAG_ORIENTATION, &orientation)) {
+		orientation = ORIENTATION_TOPLEFT;
+	}
+
+	tiff_document_get_resolution (tiff_document, &x_res, &y_res);
+	
+	pop_handlers ();
+  
+	/* Sanity check the doc */
+	if (width <= 0 || height <= 0)
+		return NULL;                
+
+#ifdef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH
+	rowstride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, width);
+#else
+	rowstride = width * 4;
+#endif
+	if (rowstride / 4 != width)
+		/* overflow, or cairo was changed in an unsupported way */
+		return NULL;                
+	
+	bytes = height * rowstride;
+	if (bytes / rowstride != height)
+		/* overflow */
+		return NULL;                
+	
+	pixels = g_try_malloc (bytes);
+	if (!pixels)
+		return NULL;
+	
+	surface = cairo_image_surface_create_for_data (pixels,
+						       CAIRO_FORMAT_RGB24,
+						       width, height,
+						       rowstride);
+	cairo_surface_set_user_data (surface, &key,
+				     pixels, (cairo_destroy_func_t)g_free);
+
+	TIFFReadRGBAImageOriented (tiff_document->tiff,
+				   width, height,
+				   (uint32 *)pixels,
+				   orientation, 1);
+	pop_handlers ();
+
+	/* Convert the format returned by libtiff to
+	* what cairo expects
+	*/
+	p = pixels;
+	while (p < pixels + bytes) {
+		guint32 *pixel = (guint32*)p;
+		guint8 r = TIFFGetR(*pixel);
+		guint8 g = TIFFGetG(*pixel);
+		guint8 b = TIFFGetB(*pixel);
+		guint8 a = TIFFGetA(*pixel);
+
+		*pixel = (a << 24) | (r << 16) | (g << 8) | b;
+
+		p += 4;
+	}
+
+	rotated_surface = ev_document_misc_surface_rotate_and_scale (surface,
+								     (width * rc->scale) + 0.5,
+								     (height * rc->scale * (x_res / y_res)) + 0.5,
+								     rc->rotation);
+	cairo_surface_destroy (surface);
+	
+	return rotated_surface;
+}
+
+static GdkPixbuf *
+tiff_document_get_thumbnail (EvDocument      *document,
+			     EvRenderContext *rc)
+{
+	TiffDocument *tiff_document = TIFF_DOCUMENT (document);
+	int width, height;
+	float x_res, y_res;
+	gint rowstride, bytes;
+	guchar *pixels = NULL;
+	GdkPixbuf *pixbuf;
+	GdkPixbuf *scaled_pixbuf;
+	GdkPixbuf *rotated_pixbuf;
+	
+	push_handlers ();
+	if (TIFFSetDirectory (tiff_document->tiff, rc->page->index) != 1) {
+		pop_handlers ();
+		return NULL;
+	}
+
+	if (!TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &width)) {
 		pop_handlers ();
 		return NULL;
 	}
 
-	if (! TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res)) {
+	if (! TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &height)) {
 		pop_handlers ();
 		return NULL;
 	}
 
+	tiff_document_get_resolution (tiff_document, &x_res, &y_res);
+	
 	pop_handlers ();
   
 	/* Sanity check the doc */
 	if (width <= 0 || height <= 0)
 		return NULL;                
-        
+
 	rowstride = width * 4;
 	if (rowstride / 4 != width)
 		/* overflow */
@@ -245,14 +361,15 @@ tiff_document_render_pixbuf (EvDocument      *document,
 	pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8, 
 					   width, height, rowstride,
 					   (GdkPixbufDestroyNotify) g_free, NULL);
-	
-	pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
-	TIFFReadRGBAImageOriented (tiff_document->tiff, width, height, (uint32 *)gdk_pixbuf_get_pixels (pixbuf), ORIENTATION_TOPLEFT, 1);
+	TIFFReadRGBAImageOriented (tiff_document->tiff,
+				   width, height,
+				   (uint32 *)pixels,
+				   ORIENTATION_TOPLEFT, 1);
 	pop_handlers ();
-	
+
 	scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
 						 width * rc->scale,
-						 height * rc->scale * (x_res/y_res),
+						 height * rc->scale * (x_res / y_res),
 						 GDK_INTERP_BILINEAR);
 	g_object_unref (pixbuf);
 	
@@ -262,6 +379,21 @@ tiff_document_render_pixbuf (EvDocument      *document,
 	return rotated_pixbuf;
 }
 
+static gchar *
+tiff_document_get_page_label (EvDocument *document,
+			      EvPage     *page)
+{
+	TiffDocument *tiff_document = TIFF_DOCUMENT (document);
+	static gchar *label;
+
+	if (TIFFGetField (tiff_document->tiff, TIFFTAG_PAGENAME, &label) &&
+	    g_utf8_validate (label, -1, NULL)) {
+		return g_strdup (label);
+	}
+
+	return NULL;
+}
+
 static void
 tiff_document_finalize (GObject *object)
 {
@@ -278,109 +410,28 @@ tiff_document_finalize (GObject *object)
 static void
 tiff_document_class_init (TiffDocumentClass *klass)
 {
-	GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+	GObjectClass    *gobject_class = G_OBJECT_CLASS (klass);
+	EvDocumentClass *ev_document_class = EV_DOCUMENT_CLASS (klass);
 
 	gobject_class->finalize = tiff_document_finalize;
-}
 
-static gboolean
-tiff_document_can_get_text (EvDocument *document)
-{
-	return FALSE;
-}
-
-static EvDocumentInfo *
-tiff_document_get_info (EvDocument *document)
-{
-	EvDocumentInfo *info;
-
-	info = g_new0 (EvDocumentInfo, 1);
-	info->fields_mask = 0;
-
-	return info;
-}
-
-static void
-tiff_document_document_iface_init (EvDocumentIface *iface)
-{
-	iface->load = tiff_document_load;
-	iface->save = tiff_document_save;
-	iface->can_get_text = tiff_document_can_get_text;
-	iface->get_n_pages = tiff_document_get_n_pages;
-	iface->get_page_size = tiff_document_get_page_size;
-	iface->render_pixbuf = tiff_document_render_pixbuf;
-	iface->get_info = tiff_document_get_info;
-}
-
-static GdkPixbuf *
-tiff_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
-					EvRenderContext      *rc, 
-					gboolean              border)
-{
-	GdkPixbuf *pixbuf;
-
-	pixbuf = tiff_document_render_pixbuf (EV_DOCUMENT (document), rc);
-	
-	if (border) {
-		GdkPixbuf *tmp_pixbuf = pixbuf;
-		
-		pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
-		g_object_unref (tmp_pixbuf);
-	}
-	
-	return pixbuf;
-}
-
-static void
-tiff_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
-					 EvRenderContext      *rc, 
-					 gint                 *width,
-					 gint                 *height)
-{
-	gdouble page_width, page_height;
-
-	tiff_document_get_page_size (EV_DOCUMENT (document),
-				     rc->page,
-				     &page_width, &page_height);
-
-	if (rc->rotation == 90 || rc->rotation == 270) {
-		*width = (gint) (page_height * rc->scale);
-		*height = (gint) (page_width * rc->scale);
-	} else {
-		*width = (gint) (page_width * rc->scale);
-		*height = (gint) (page_height * rc->scale);
-	}
-}
-
-static void
-tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
-{
-	iface->get_thumbnail = tiff_document_thumbnails_get_thumbnail;
-	iface->get_dimensions = tiff_document_thumbnails_get_dimensions;
+	ev_document_class->load = tiff_document_load;
+	ev_document_class->save = tiff_document_save;
+	ev_document_class->get_n_pages = tiff_document_get_n_pages;
+	ev_document_class->get_page_size = tiff_document_get_page_size;
+	ev_document_class->render = tiff_document_render;
+	ev_document_class->get_thumbnail = tiff_document_get_thumbnail;
+	ev_document_class->get_page_label = tiff_document_get_page_label;
 }
 
 /* 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
@@ -390,7 +441,7 @@ tiff_document_file_exporter_do_page (EvFileExporter *exporter, EvRenderContext *
 
 	if (document->ps_export_ctx == NULL)
 		return;
-	if (TIFFSetDirectory (document->tiff, rc->page) != 1)
+	if (TIFFSetDirectory (document->tiff, rc->page->index) != 1)
 		return;
 	tiff2ps_process_page (document->ps_export_ctx, document->tiff,
 			      0, 0, 0, 0, 0);
@@ -406,13 +457,23 @@ 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)
+tiff_document_document_file_exporter_iface_init (EvFileExporterInterface *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