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authorChris Salch <emeraldd.chris@gmail.com>2008-08-17 12:31:23 -0500
committerPeter Hutterer <peter.hutterer@redhat.com>2008-08-18 12:03:07 +0930
commitbd405ddc83b9ad1ceed47f572245fccae598e6bb (patch)
treea0a976177cc0e875a015bcf2a366aaf7cb508ad9 /src/draglock.c
parent36d702006d5aace50083ca52b7065d465b497077 (diff)
Adding in DragLockButtons functionality.
Signed-off-by: Peter Hutterer <peter.hutterer@redhat.com>
Diffstat (limited to 'src/draglock.c')
-rw-r--r--src/draglock.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/src/draglock.c b/src/draglock.c
new file mode 100644
index 0000000..8739697
--- /dev/null
+++ b/src/draglock.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+ * Copyright 1993 by David Dawes <dawes@xfree86.org>
+ * Copyright 2002 by SuSE Linux AG, Author: Egbert Eich
+ * Copyright 1994-2002 by The XFree86 Project, Inc.
+ * Copyright 2002 by Paul Elliott
+ * (Ported from xf86-input-mouse, above copyrights taken from there)
+ * Copyright 2008 University of South Australia
+ * Copyright 2008 by Chris Salch
+ *
+ * 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, and that the name of the authors
+ * not be used in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission. The authors make no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+/* Draglock code */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86.h>
+#include <xf86Xinput.h>
+
+#include "evdev.h"
+
+void EvdevDragLockLockButton(InputInfoPtr pInfo, unsigned int button);
+
+
+/* Setup and configuration code */
+void
+EvdevDragLockInit(InputInfoPtr pInfo)
+{
+ EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+ char *option_string = NULL;
+ int meta_button = 0;
+ int lock_button = 0;
+ char *next_num = NULL;
+ char *end_str = NULL;
+ BOOL pairs = FALSE;
+
+ option_string = xf86CheckStrOption(pInfo->options, "DragLockButtons",NULL);
+
+ if (!option_string)
+ return;
+
+ next_num = option_string;
+
+ /* Loop until we hit the end of our option string */
+ while (next_num != NULL) {
+ lock_button = 0;
+ meta_button = strtol(next_num, &end_str, 10);
+
+ /* check to see if we found anything */
+ if (next_num != end_str) {
+ /* setup for the next number */
+ next_num = end_str;
+ } else {
+ /* we have nothing more to parse, drop out of the loop */
+ next_num = NULL;
+ }
+
+ /* Check for a button to lock if we have a meta button */
+ if (meta_button != 0 && next_num != NULL ) {
+ lock_button = strtol(next_num, &end_str, 10);
+
+ /* check to see if we found anything */
+ if (next_num != end_str) {
+ /* setup for the next number */
+ next_num = end_str;
+ } else {
+ /* we have nothing more to parse, drop out of the loop */
+ next_num = NULL;
+ }
+ }
+
+ /* Ok, let the user know what we found on this look */
+ if (meta_button != 0) {
+ if (lock_button == 0) {
+ if (!pairs) {
+ /* We only have a meta button */
+ pEvdev->dragLock.meta = meta_button;
+
+ xf86Msg(X_CONFIG, "%s: DragLockButtons : "
+ "%i as meta\n",
+ pInfo->name, meta_button);
+ } else {
+ xf86Msg(X_ERROR, "%s: DragLockButtons : "
+ "Incomplete pair specifying button pairs %s\n",
+ pInfo->name, option_string);
+ }
+ } else {
+
+ /* Do bounds checking to make sure we don't crash */
+ if ((meta_button <= EVDEV_MAXBUTTONS) && (meta_button >= 0 ) &&
+ (lock_button <= EVDEV_MAXBUTTONS) && (lock_button >= 0)) {
+
+ xf86Msg(X_CONFIG, "%s: DragLockButtons : %i -> %i\n",
+ pInfo->name, meta_button, lock_button);
+
+ pEvdev->dragLock.lock_pair[meta_button - 1] = lock_button;
+ pairs=TRUE;
+ } else {
+ /* Let the user know something was wrong
+ with this pair of buttons */
+ xf86Msg(X_CONFIG, "%s: DragLockButtons : "
+ "Invalid button pair %i -> %i\n",
+ pInfo->name, meta_button, lock_button);
+ }
+ }
+ } else {
+ xf86Msg(X_ERROR, "%s: Found DragLockButtons "
+ "with invalid lock button string : '%s'\n",
+ pInfo->name, option_string);
+
+ /* This should be the case anyhow, just make sure */
+ next_num = NULL;
+ }
+
+ /* Check for end of string, to avoid annoying error */
+ if (next_num != NULL && *next_num == '\0')
+ next_num = NULL;
+ }
+}
+
+/* Updates DragLock button state and firest button event messges */
+void
+EvdevDragLockLockButton(InputInfoPtr pInfo, unsigned int button)
+{
+ EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+ BOOL state=0;
+
+ /* update button state */
+ state = pEvdev->dragLock.lock_state[button - 1] ? FALSE : TRUE;
+ pEvdev->dragLock.lock_state[button - 1] = state;
+
+ xf86PostButtonEvent(pInfo->dev, 0, button, state, 0, 0);
+}
+
+/* Filter button presses looking for either a meta button or the
+ * control of a button pair.
+ *
+ * @param button button number (1 for left, 3 for right)
+ * @param value TRUE if button press, FALSE if release
+ *
+ * @return TRUE if the event was swallowed here, FALSE otherwise.
+ */
+BOOL
+EvdevDragLockFilterEvent(InputInfoPtr pInfo, unsigned int button, int value)
+{
+ EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+
+ if (button == 0)
+ return FALSE;
+
+ /* Do we have a single meta key or
+ several button pairings? */
+ if (pEvdev->dragLock.meta != 0) {
+
+ if (pEvdev->dragLock.meta == button) {
+
+ /* setup up for button lock */
+ if (value)
+ pEvdev->dragLock.meta_state = TRUE;
+
+ return TRUE;
+ } else if (pEvdev->dragLock.meta_state) { /* waiting to lock */
+
+ pEvdev->dragLock.meta_state = FALSE;
+
+ EvdevDragLockLockButton(pInfo, button);
+
+ return TRUE;
+ }
+ } else if (pEvdev->dragLock.lock_pair[button - 1] && value) {
+ /* A meta button in a meta/lock pair was pressed */
+ EvdevDragLockLockButton(pInfo, pEvdev->dragLock.lock_pair[button - 1]);
+ return TRUE;
+ }
+
+ /* Eat events for buttons that are locked */
+ if (pEvdev->dragLock.lock_state[button - 1])
+ return TRUE;
+
+ return FALSE;
+}
+