Add support for device hierarchy changes.

4 files changed, 245 insertions, 2 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index a43db58..67fa3a7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -27,6 +27,7 @@ xinput_LDADD = $(XINPUT_LIBS) -lm
 xinput_SOURCES = \
     buttonmap.c \
     feedback.c \
+    hierarchy.c \
     list.c \
     setint.c \
     setmode.c \
diff --git a/src/hierarchy.c b/src/hierarchy.c
new file mode 100644
index 0000000..edb66a1
--- /dev/null
+++ b/src/hierarchy.c
@@ -0,0 +1,183 @@
+/*
+ * Copyright 2007 Peter Hutterer <peter@cs.unisa.edu.au>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation.
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ * Except as contained in this notice, the name of the author shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization
+ * from the author.
+ * 
+ */
+
+#include "xinput.h"
+#include <string.h>
+
+#define Error(error, ...) \
+{ \
+    fprintf(stderr, __VA_ARGS__); \
+    return error;\
+}
+/**
+ * Create a new master device. Name must be supplied, other values are
+ * optional.
+ */
+int 
+create_master(Display* dpy, int argc, char** argv, char* name, char *desc)
+{
+    XCreateMasterInfo c;
+    XCreateMasterInfo* pc = &c;
+
+    if (argc == 0)
+    {
+        fprintf(stderr, "Usage: xinput %s %s\n", name, desc);
+        return EXIT_FAILURE;
+    }
+
+    c.type = CH_CreateMasterDevice;
+    c.name = argv[0];
+    c.sendCore = (argc >= 2) ? atoi(argv[1]) : 1;
+    c.enable = (argc >= 3) ? atoi(argv[2]) : 1;
+
+    return XChangeDeviceHierarchy(dpy, 1, (XAnyHierarchyChangeInfo**)&pc);
+}
+
+/**
+ * Remove a master device.
+ * By default, all attached devices are set to Floating, unless parameters are
+ * given.
+ */
+int
+remove_master(Display* dpy, int argc, char** argv, char *name, char *desc)
+{
+    XRemoveMasterInfo r;
+    XRemoveMasterInfo* pr = &r;
+    XDevice* master = NULL, *ptr = NULL, *keybd = NULL;
+    int ret;
+
+    if (argc == 0)
+    {
+        fprintf(stderr, "usage: xinput %s %s\n", name, desc);
+        return EXIT_FAILURE;
+    }
+
+    master = XOpenDevice(dpy, atoi(argv[0]));
+    if (!master)
+        Error(BadValue, "Invalid master device.\n");
+
+    r.type = CH_RemoveMasterDevice;
+    r.device = master;
+    if (argc >= 2)
+    {
+        if (!strcmp(argv[1], "Floating"))
+            r.returnMode = Floating;
+        else if (!strcmp(argv[1], "AttachToMaster"))
+            r.returnMode = AttachToMaster;
+        else 
+            Error(BadValue, "Invalid returnMode.\n");
+    } else
+        r.returnMode = Floating;
+
+    if (r.returnMode == AttachToMaster)
+    {
+        ptr = XOpenDevice(dpy, atoi(argv[2]));
+        keybd = XOpenDevice(dpy, atoi(argv[3]));
+        if (!ptr || !keybd)
+            Error(BadValue, "Invalid fallback master.\n");
+        r.returnPointer = ptr;
+        r.returnKeyboard = keybd;
+    }
+
+    ret = XChangeDeviceHierarchy(dpy, 1, (XAnyHierarchyChangeInfo**)&pr);
+    if (ptr)
+        XCloseDevice(dpy, ptr);
+    if (keybd)
+        XCloseDevice(dpy, keybd);
+    return ret;
+}
+
+/**
+ * Swap a device from one master to another.
+ */
+int
+change_attachment(Display* dpy, int argc, char** argv, char *name, char* desc)
+{
+    XChangeAttachmentInfo c;
+    XChangeAttachmentInfo* pc = &c;
+    XDevice *slave, *master;
+    int ret;
+
+    if (argc < 2)
+    {
+        fprintf(stderr, "usage: xinput %s %s\n", name, desc);
+        return EXIT_FAILURE;
+    }
+
+    slave = XOpenDevice(dpy, atoi(argv[0]));
+    master = XOpenDevice(dpy, atoi(argv[1]));
+
+    if (!slave)
+        Error(BadValue, "Invalid slave device given %d\n", atoi(argv[0]));
+
+    if (!master)
+        Error(BadValue, "Invalid master device given %d\n", atoi(argv[1]));
+
+    c.type = CH_ChangeAttachment;
+    c.changeMode = AttachToMaster;
+    c.device = slave;
+    c.newMaster = master;
+
+    ret = XChangeDeviceHierarchy(dpy, 1, (XAnyHierarchyChangeInfo**)&pc);
+    XCloseDevice(dpy, slave);
+    XCloseDevice(dpy, master);
+    return ret;
+}
+
+/**
+ * Set a device floating.
+ */
+int
+float_device(Display* dpy, int argc, char** argv, char* name, char* desc)
+{
+    XChangeAttachmentInfo c;
+    XChangeAttachmentInfo* pc = &c;
+    XDevice *slave;
+    int ret;
+
+    if (argc < 1)
+    {
+        fprintf(stderr, "usage: xinput %s %s\n", name, desc);
+        return EXIT_FAILURE;
+    }
+
+
+    slave = XOpenDevice(dpy, atoi(argv[0]));
+
+    if (!slave)
+        return BadValue;
+
+    c.type = CH_ChangeAttachment;
+    c.changeMode = Floating;
+    c.device = slave;
+
+    ret = XChangeDeviceHierarchy(dpy, 1, (XAnyHierarchyChangeInfo**)&pc);
+    XCloseDevice(dpy, slave);
+    return ret;
+}
+
+
diff --git a/src/xinput.c b/src/xinput.c
index f74dee5..68f7f0b 100644
--- a/src/xinput.c
+++ b/src/xinput.c
@@ -81,6 +81,22 @@ static entry drivers[] =
      "",
      version
     },
+    { "create-master",
+      "<id> [sendCore (dflt:1)] [enable (dflt:1)]",
+      create_master
+    },
+    { "remove-master",
+      "<id> [returnMode (dflt:Floating)] [returnPointer] [returnKeyboard]",
+      remove_master
+    },
+    { "reattach",
+      "<id> <master>",
+      change_attachment
+    },
+    { "float",
+      "<id>",
+      float_device
+    },
     {0, 0, 0
     }
 };
diff --git a/src/xinput.h b/src/xinput.h
index a43ab73..8b94d6a 100644
--- a/src/xinput.h
+++ b/src/xinput.h
@@ -152,5 +152,48 @@ query_state(
 #endif
 );
 
-/* end of xinput.h
- */
+int
+create_master(
+#if NeedFunctionPrototypes
+		 Display*	display,
+		 int		argc,
+		 char		*argv[],
+		 char		*prog_name,
+		 char		*prog_desc
+#endif
+);
+
+int
+remove_master(
+#if NeedFunctionPrototypes
+		 Display*	display,
+		 int		argc,
+		 char		*argv[],
+		 char		*prog_name,
+		 char		*prog_desc
+#endif
+);
+
+int
+change_attachment(
+#if NeedFunctionPrototypes
+		 Display*	display,
+		 int		argc,
+		 char		*argv[],
+		 char		*prog_name,
+		 char		*prog_desc
+#endif
+);
+
+int
+float_device(
+#if NeedFunctionPrototypes
+		 Display*	display,
+		 int		argc,
+		 char		*argv[],
+		 char		*prog_name,
+		 char		*prog_desc
+#endif
+);
+
+/* end of xinput.h */