Merge branch 'shiftview' into csobczak

Add shiftview functionality to csobczak dwl

1 files changed, 30 insertions, 0 deletions

diff --git a/shiftview.c b/shiftview.c
new file mode 100644
index 0000000..ddd81ef
--- /dev/null
+++ b/shiftview.c
@@ -0,0 +1,30 @@
+// shiftview all tags regardless of tags having open windows
+void
+shiftview(const Arg *arg)
+{
+	Arg view_argument;
+	uint32_t destination_tag;
+
+	// arg->i represents the direction and distance passed from config.def.h (usually -1 and +1)
+	if(arg->i > 0){
+		// shift right (increase tag index), move the active tag bit to the left (0001) to (0010)
+		destination_tag = selmon->tagset[selmon->seltags] << arg->i;
+	}else{
+		// shift to the left
+		destination_tag = selmon->tagset[selmon->seltags] >> (-arg->i);
+	}
+
+	// TAGMASK defines the valid boundary for tags (111111111) for 9 tags
+	// if the shift pushed the active bit outside the bounds, destination_tag will become 0
+	if(!(destination_tag & TAGMASK)){
+		// If we went off to the right edge, wrap around to the first tag (000000001)
+		// If we went off to the left, wrap around to the last tag (bit 1 shifted left by TAGCOUNT - 1)
+		destination_tag = arg->i > 0 ? 1 : 1 << (TAGCOUNT - 1);
+	}
+
+	// pack the destination tag bitmask into the required dwl argument struct
+	view_argument.ui = destination_tag;
+	
+	// pass the destination tag to dwl's view function
+	view(&view_argument);
+}