These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / jumpscroll.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/jumpscroll.h b/qemu/roms/ipxe/src/include/ipxe/jumpscroll.h
new file mode 100644 (file)
index 0000000..7a5b111
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/jumpscroll.h
@@ -0,0 +1,50 @@
+#ifndef _IPXE_JUMPSCROLL_H
+#define _IPXE_JUMPSCROLL_H
+
+/** @file
+ *
+ * Jump scrolling
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+/** A jump scroller */
+struct jump_scroller {
+       /** Maximum number of visible rows */
+       unsigned int rows;
+       /** Total number of items */
+       unsigned int count;
+       /** Currently selected item */
+       unsigned int current;
+       /** First visible item */
+       unsigned int first;
+};
+
+/**
+ * Check if jump scroller is currently on first page
+ *
+ * @v scroll           Jump scroller
+ * @ret is_first       Scroller is currently on first page
+ */
+static inline int jump_scroll_is_first ( struct jump_scroller *scroll ) {
+
+       return ( scroll->first == 0 );
+}
+
+/**
+ * Check if jump scroller is currently on last page
+ *
+ * @v scroll           Jump scroller
+ * @ret is_last                Scroller is currently on last page
+ */
+static inline int jump_scroll_is_last ( struct jump_scroller *scroll ) {
+
+       return ( ( scroll->first + scroll->rows ) >= scroll->count );
+}
+
+extern int jump_scroll_key ( struct jump_scroller *scroll, int key );
+extern int jump_scroll_move ( struct jump_scroller *scroll, int move );
+extern int jump_scroll ( struct jump_scroller *scroll );
+
+#endif /* _IPXE_JUMPSCROLL_H */