1 files changed, 106 insertions, 0 deletions
diff --git a/gtk/throbber.c b/gtk/throbber.c
new file mode 100644
index 000000000..987b9dd42
--- /dev/null
+++ b/gtk/throbber.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2008 Rob Kendrick <rjek@netsurf-browser.org>
+ * Copyright 2008 Sean Fox <dyntryx@gmail.com>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#ifdef WITH_GIF
+#include <libnsgif.h>
+#endif
+#include "utils/log.h"
+#include "gtk/throbber.h"
+#include "gtk/bitmap.h"
+
+struct nsgtk_throbber *nsgtk_throbber = NULL;
+
+/**
+ * Creates the throbber using a PNG for each frame.  The number of frames must
+ * be at least two.  The first frame is the inactive frame, others are the
+ * active frames.
+ *
+ * \param  frames  The number of frames.  Must be at least two.
+ * \param  ...     Filenames of PNGs containing frames.
+ * \return true on success.
+ */
+bool nsgtk_throbber_initialise_from_png(const int frames, char** frame_files)
+{
+	GError *err = NULL;
+	struct nsgtk_throbber *throb;		/**< structure we generate */
+	bool errors_when_loading = false;	/**< true if a frame failed */
+	int frame_loop;
+	
+	if (frames < 2) {
+		/* we need at least two frames - one for idle, one for active */
+		LOG(("Insufficent number of frames in throbber animation!"));
+		LOG(("(called with %d frames, where 2 is a minimum.)",
+			frames));
+		return false;
+	}
+	
+	throb = malloc(sizeof(*throb));
+	if (throb == NULL)
+		return false;
+
+	throb->nframes = frames;
+	throb->framedata = malloc(sizeof(GdkPixbuf *) * throb->nframes);
+	if (throb->framedata == NULL) {
+		free(throb);
+		return false;
+	}
+	
+	for (frame_loop = 0; frame_loop < frames; frame_loop++) {
+		throb->framedata[frame_loop] = gdk_pixbuf_new_from_file(frame_files[frame_loop], &err);
+		if (err != NULL) {
+			LOG(("Error when loading %s: %s (%d)",
+				frame_files[frame_loop], err->message, err->code));
+			throb->framedata[frame_loop] = NULL;
+			errors_when_loading = true;
+		}
+	}
+	
+	if (errors_when_loading == true) {
+		for (frame_loop = 0; frame_loop < frames; frame_loop++) {
+			if (throb->framedata[frame_loop] != NULL)
+				gdk_pixbuf_unref(throb->framedata[frame_loop]);
+		}
+
+		free(throb->framedata);
+		free(throb);
+		
+		return false;		
+	}
+	
+	nsgtk_throbber = throb;
+	
+	return true;
+}
+
+void nsgtk_throbber_finalise(void)
+{
+	int i;
+
+	for (i = 0; i < nsgtk_throbber->nframes; i++)
+		gdk_pixbuf_unref(nsgtk_throbber->framedata[i]);
+
+	free(nsgtk_throbber->framedata);
+	free(nsgtk_throbber);
+
+	nsgtk_throbber = NULL;
+}
+