Add checks for poppler and friends which are needed by pdf2png. Set CAIRO_CAN_TEST_PDF_SURFACE as both a #define and an automake conditional.

Build pdf2png if possible.
Add support for testing the PDF backend.
New utility program to convert a PDF file into a PNG image using poppler (thanks to Kristian Høgsberg).
Ignore new stuff generated by PDF backend testing.

1 files changed, 88 insertions, 0 deletions

diff --git a/test/pdf2png.c b/test/pdf2png.c
new file mode 100644
index 000000000..3edb17cc3
--- /dev/null
+++ b/test/pdf2png.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Kristian Høgsberg <krh@redhat.com>
+ */
+
+#include <stdlib.h>
+#include <poppler.h>
+
+#define FAIL(msg)							\
+    do { fprintf (stderr, "FAIL: %s\n", msg); exit (-1); } while (0)
+
+#define PIXELS_PER_POINT 1
+
+int main (int argc, char *argv[])
+{
+    PopplerDocument *document;
+    PopplerPage *page;
+    GdkPixbuf *pixbuf;
+    double width, height;
+    GError *error;
+    const char *filename = argv[1];
+    const char *output_filename = argv[2];
+    const char *page_label = argv[3];
+    gchar *absolute, *uri;
+
+    if (argc != 4)
+	FAIL ("usage: pdf2png input_file.pdf output_file.png page");
+
+    g_type_init ();
+
+    error = NULL;
+
+    if (g_path_is_absolute(filename)) {
+	absolute = g_strdup (filename);
+    } else {
+	gchar *dir = g_get_current_dir ();
+	absolute = g_build_filename (dir, filename, (gchar *) 0);
+	free (dir);
+    }
+
+    uri = g_filename_to_uri (absolute, NULL, &error);
+    free (absolute);
+    if (uri == NULL)
+	FAIL (error->message);
+
+    document = poppler_document_new_from_file (uri, NULL, &error);
+    if (document == NULL)
+	FAIL (error->message);
+
+    page = poppler_document_get_page_by_label (document, page_label);
+    if (page == NULL)
+	FAIL ("page not found");
+
+    poppler_page_get_size (page, &width, &height);
+
+    pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
+			     width * PIXELS_PER_POINT,
+			     height * PIXELS_PER_POINT);
+    gdk_pixbuf_fill (pixbuf, 0xffffffff);
+    poppler_page_render_to_pixbuf (page, 0, 0, width , height,
+				   PIXELS_PER_POINT, 0, pixbuf);
+
+    gdk_pixbuf_save (pixbuf, output_filename, "png", &error, NULL);
+    if (error != NULL)
+	FAIL (error->message);
+
+    return 0;
+}