Tiff documents were rendered with wrong colors. Fixes bug #497279.

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

diff --git a/backend/tiff/tiff-document.c b/backend/tiff/tiff-document.c
index f813c47438066f00c6e4d55bd86a8e8d4cda4e7a..34275c13d3886ba92b0000f27a360734362fa243 100644 (file)
--- a/backend/tiff/tiff-document.c
+++ b/backend/tiff/tiff-document.c
@@ -210,6 +210,7 @@ tiff_document_render (EvDocument      *document,
        float x_res, y_res;
        gint rowstride, bytes;
        guchar *pixels = NULL;
+       guchar *p;
        GdkPixbuf *pixbuf;
        GdkPixbuf *scaled_pixbuf;
        GdkPixbuf *rotated_pixbuf;
@@ -271,6 +272,23 @@ tiff_document_render (EvDocument      *document,
                                   ORIENTATION_TOPLEFT, 1);
        pop_handlers ();
 
+       /* Convert the format returned by libtiff to
+       * what cairo expects
+       */
+       p = pixels;
+       while (p < pixels + bytes) {
+               uint32 pixel = *(uint32 *)p;
+               int r = TIFFGetR(pixel);
+               int g = TIFFGetG(pixel);
+               int b = TIFFGetB(pixel);
+               int a = TIFFGetA(pixel);
+               
+               *p++ = b;
+               *p++ = g;
+               *p++ = r;
+               *p++ = a;
+       }
+
        rotated_surface = ev_document_misc_surface_rotate_and_scale (surface,
                                                                     (width * rc->scale) + 0.5,
                                                                     (height * rc->scale * (x_res / y_res)) + 0.5,