1 files changed, 130 insertions, 0 deletions
diff --git a/saedit/imageset.c b/saedit/imageset.c
new file mode 100644
index 0000000..9ae2ea0
--- /dev/null
+++ b/saedit/imageset.c
@@ -0,0 +1,130 @@
+#include "imageset.h"
+#include <string.h>
+
+struct _Imageset {
+	gchar *name;
+	gint width, height;
+	gint offsetX, offsetY;
+
+	GdkPixbuf *pixbuf;
+};
+
+Imageset *
+imageset_new (
+	const XMLNode *node,
+	const gchar *cdf_filename
+) {
+	Imageset *imgset; 
+	gchar    *src, *filename;
+	GError   *err = NULL;
+	gboolean  fail = FALSE;
+
+	g_return_val_if_fail (g_strcmp0 (node->name, "imageset") == 0, NULL);
+
+	imgset = (Imageset *) g_new0 (Imageset, 1);
+
+	imgset->name = xml_node_get_attr_value (node, "name");
+	if (imgset->name == NULL) {
+		/* TODO: report error */
+		fail = TRUE;
+	}
+
+	src = xml_node_get_attr_value (node, "src");
+	if (src == NULL) {
+		/* TODO: report error */
+		fail = TRUE;
+	} else {
+		gchar *delim = strchr (src, '|');
+		if (delim != NULL)
+			*delim = 0;
+		/* TODO: process palettes? */
+	}
+
+	imgset->width  = xml_node_get_int_attr_value (node,  "width", -1);
+	imgset->height = xml_node_get_int_attr_value (node, "height", -1);
+	if (imgset->width <= 0 || imgset->height <= 0) {
+		/* TODO: report error */
+		fail = TRUE;
+	}
+
+	imgset->offsetX = xml_node_get_int_attr_value (node, "offsetX", 0);
+	imgset->offsetY = xml_node_get_int_attr_value (node, "offsetY", 0);
+
+	filename = g_strconcat (cdf_filename, "/", src, NULL);
+	imgset->pixbuf = gdk_pixbuf_new_from_file (filename, &err);
+
+	if (imgset->pixbuf == NULL) {
+		/* TODO handle err and report error */
+		fail = TRUE;
+	}
+
+	if (fail) {
+		imageset_free (imgset);
+		return NULL;
+	}
+
+	return imgset;
+}
+
+gint
+imageset_compare_by_name (
+	const Imageset *first,
+	const Imageset *second
+) {
+	return g_strcmp0 (first->name, second->name);
+}
+
+GdkPixbuf *
+imageset_get_sprite_by_index (
+	const Imageset *imageset,
+	gint index
+) {
+	gint w = gdk_pixbuf_get_width (imageset->pixbuf);
+	w /= imageset->width;
+
+	g_return_val_if_fail (index >= 0, NULL);
+
+	return gdk_pixbuf_new_subpixbuf (
+		imageset->pixbuf,
+		(index % w) * imageset->width,
+		(index / w) * imageset->height,
+		imageset->width,
+		imageset->height
+	);
+}
+
+void
+imageset_free (Imageset *imgset) {
+	g_free (imgset->name);
+	if (imgset->pixbuf != NULL)
+		g_object_unref (imgset->pixbuf);
+	g_free (imgset);
+}
+
+gboolean
+imageset_name_equals (
+	const Imageset *imageset,
+	const gchar *name
+) {
+	return g_strcmp0 (imageset->name, name) == 0;
+}
+
+void
+imageset_get_offset (
+	const Imageset *imageset,
+	gint *offsetX,
+	gint *offsetY
+) {
+	*offsetX = imageset->offsetX;
+	*offsetY = imageset->offsetY;
+}
+
+void
+imageset_get_size (
+	const Imageset *imageset,
+	gint *width,
+	gint *height
+) {
+	*width = imageset->width;
+	*height = imageset->height;
+}