From 98589be65c8e636297e3245924f5fac2b5c4b562 Mon Sep 17 00:00:00 2001
From: Rob Kendrick <rjek@netsurf-browser.org>
Date: Mon, 2 Jun 2008 16:47:15 +0000
Subject: nsgtk now loads the throbber from a set of PNG files.  This change
 will make your eyes bleed.  Please avoid looking at it until I make this
 cleaner.

svn path=/trunk/netsurf/; revision=4244
---
 gtk/gtk_throbber.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 70 insertions(+), 2 deletions(-)

(limited to 'gtk/gtk_throbber.c')

diff --git a/gtk/gtk_throbber.c b/gtk/gtk_throbber.c
index 9bf5a10df..b0d41595f 100644
--- a/gtk/gtk_throbber.c
+++ b/gtk/gtk_throbber.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006 Rob Kendrick <rjek@rjek.com>
+ * Copyright 2008 Rob Kendrick <rjek@netsurf-browser.org>
  *
  * This file is part of NetSurf, http://www.netsurf-browser.org/
  *
@@ -18,6 +18,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
 #include "utils/log.h"
 #include "image/gifread.h"
 #include "gtk/gtk_throbber.h"
@@ -25,7 +26,74 @@
 
 struct nsgtk_throbber *nsgtk_throbber = NULL;
 
-bool nsgtk_throbber_initialise(const char *fn)
+/**
+ * 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, ...)
+{
+	va_list filenames;
+	GError *err = NULL;
+	struct nsgtk_throbber *throb;		/**< structure we generate */
+	bool errors_when_loading = false;	/**< true if a frame failed */
+	
+	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));
+	throb->nframes = frames;
+	throb->framedata = malloc(sizeof(GdkPixbuf *) * throb->nframes);
+	
+	va_start(filenames, frames);
+	
+	for (int i = 0; i < frames; i++) {
+		const char *fn = va_arg(filenames, const char *);
+		throb->framedata[i] = gdk_pixbuf_new_from_file(fn, &err);
+		if (err != NULL) {
+			LOG(("Error when loading %s: %s (%d)",
+				fn, err->message, err->code));
+			throb->framedata[i] = NULL;
+			errors_when_loading = true;
+		}
+	}
+	
+	va_end(filenames);
+	
+	if (errors_when_loading == true) {
+		for (int i = 0; i < frames; i++) {
+			if (throb->framedata[i] != NULL)
+				gdk_pixbuf_unref(throb->framedata[i]);
+		}
+
+		free(throb);
+		
+		return false;		
+	}
+	
+	nsgtk_throbber = throb;
+	
+	return true;
+}
+
+/**
+ * Creates the throbber using a single GIF, using the first frame as the
+ * inactive throbber, and the others for the active animation.  The GIF must
+ * therefor have at least two frames.
+ *
+ * \param  fn Filename of GIF to use.  It must have at least two frames.
+ * \return true on success.
+ */
+bool nsgtk_throbber_initialise_from_gif(const char *fn)
 {
 	/* disect the GIF provided by filename in *fn into a series of
 	 * GdkPixbuf for use later.
-- 
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