From cb6265680c0154df59dc686001b73ef863823a8a Mon Sep 17 00:00:00 2001
From: Jonas Gunz <himself@jonasgunz.de>
Date: Wed, 8 Jul 2020 02:10:07 +0200
Subject: initial

---
 Makefile           | 39 ++++++++++++++++++++++++++++++++++++
 src/switch-input.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 97 insertions(+)
 create mode 100644 Makefile
 create mode 100644 src/switch-input.c

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..bf7a854
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,39 @@
+CC              = clang
+CFLAGS          = -Wall
+LDFLAGS         = -lX11
+BUILDDIR        = build
+SOURCEDIR       = src
+OBJECTDIR       = obj
+
+OUTPUT          = switch-input
+
+SRCS = $(wildcard $(SOURCEDIR)/*.c)
+OBJS = $(SRCS:.c=.o)
+OBJ  = $(OBJS:$(SOURCEDIR)/%=$(OBJECTDIR)/%)
+
+build: dir $(OBJ)
+	@echo LD $(OBJ)
+	@$(CC) $(CFLAGS) -o $(BUILDDIR)/$(OUTPUT) $(OBJ) $(LDFLAGS)
+
+debug: CFLAGS += -g -D _DEBUG
+debug: build;
+
+dir:
+	@mkdir -p $(OBJECTDIR)
+	@mkdir -p $(BUILDDIR)
+
+$(OBJECTDIR)/%.o: $(SOURCEDIR)/%.c
+	@echo CC $<
+	@$(CC) $(CFLAGS) -c $< -o $@
+
+.PHONY: clean
+clean:	
+	@echo RM $(OBJ)
+	@echo RM $(BUILDDIR)/$(OUTPUT)
+	@rm -df  $(OBJ)
+	@rm -Rdf $(BUILDDIR) $(OBJECTDIR)
+
+all: clean build
+
+run: build
+	@$(BUILDDIR)/$(OUTPUT)
diff --git a/src/switch-input.c b/src/switch-input.c
new file mode 100644
index 0000000..cdf490c
--- /dev/null
+++ b/src/switch-input.c
@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+
+int main( int argc, char* argv[]) {
+	printf("hallo\n");
+	Display* display;
+	int display_cnt;
+	char* display_name;
+	int current_screen, new_screen;
+
+	Window current_focus;
+	Window new_root;
+	XWindowAttributes current_focus_attributes;
+
+	display_name = getenv("DISPLAY");
+	if ( display_name == NULL ) {
+		printf("DISPLAY is not set.\n");
+		return 1;
+	}
+
+	display = XOpenDisplay(display_name);
+	if (! display ) {
+		printf("Could not open display.\n");
+		return 1;
+	}
+
+	display_cnt = ScreenCount(display);
+
+	printf("Number of displays: %i\n", display_cnt);
+	if (display_cnt < 2) {
+		printf("Not enough screens :'(\n");
+		return 1;
+	}
+
+	int revert; //Unused
+	XGetInputFocus ( display, &current_focus, &revert );
+	XGetWindowAttributes ( display, current_focus, &current_focus_attributes );
+
+	current_screen = XScreenNumberOfScreen( current_focus_attributes.screen );
+
+	printf("current: %i\n", current_screen);
+
+	// Cycle through screens
+	new_screen = current_screen < (display_cnt -1) ? current_screen + 1 : 0;
+
+	new_root = RootWindow( display, new_screen );
+
+	XSetInputFocus ( display, new_root, RevertToParent, CurrentTime );
+
+	XGetWindowAttributes ( display, new_root, &current_focus_attributes );
+	int new_x = (current_focus_attributes.width / 2);
+	int new_y = (current_focus_attributes.height / 2);
+	XWarpPointer( display, None, new_root, 0,0,0,0, new_x, new_y);
+
+	XCloseDisplay(display);
+	return 0;
+}
-- 
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