tdevdraw: dynamic discovery of MultiTouch devices - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit 5e83be0dbf9667f7d11a167f9eacc31837ed4c7d
(DIR) parent e055ceb20bd94caff3b07e64a051ab3a899c0463
(HTM) Author: Marius Eriksen <marius.eriksen@gmail.com>
Date: Mon, 20 Jun 2011 14:14:53 -0400
devdraw: dynamic discovery of MultiTouch devices
R=rsc
CC=plan9port.codebot
http://codereview.appspot.com/4653041
Diffstat:
M CONTRIBUTORS | 1 +
M src/cmd/devdraw/osx-screen-carbon.m | 114 ++++++++++++++++++++++++++++---
2 files changed, 107 insertions(+), 8 deletions(-)
---
(DIR) diff --git a/CONTRIBUTORS b/CONTRIBUTORS
t@@ -17,6 +17,7 @@ Fazlul Shahriar <fshahriar@gmail.com>
J.R. Mauro <jrm8005@gmail.com>
Jeff Sickel <jas@corpus-callosum.com>
Kris Maglione <jg@suckless.org>
+Marius Eriksen <marius.eriksen@gmail.com>
Mathieu Lonjaret <lejatorn@gmail.com>
Mathieu Lonjaret <mathieu.lonjaret@gmail.com>
Michael Teichgräber <mt4swm@googlemail.com>
(DIR) diff --git a/src/cmd/devdraw/osx-screen-carbon.m b/src/cmd/devdraw/osx-screen-carbon.m
t@@ -2,6 +2,10 @@
#define Rect OSXRect
#define Cursor OSXCursor
#include <Carbon/Carbon.h>
+#ifdef MULTITOUCH
+#include <IOKit/IOKitLib.h>
+#include <IOKit/hidsystem/IOHIDShared.h>
+#endif
#undef Rect
#undef Point
#undef Cursor
t@@ -26,6 +30,7 @@ AUTOFRAMEWORK(Cocoa)
#ifdef MULTITOUCH
AUTOFRAMEWORK(MultitouchSupport)
+AUTOFRAMEWORK(IOKit)
#endif
#define panic sysfatal
t@@ -115,11 +120,15 @@ CFMutableArrayRef MTDeviceCreateList(void);
//registers a device's frame callback to your callback function
void MTRegisterContactFrameCallback(MTDeviceRef, MTContactCallbackFunction);
+void MTUnregisterContactFrameCallback(MTDeviceRef, MTContactCallbackFunction);
//start sending events
void MTDeviceStart(MTDeviceRef, int);
void MTDeviceStop(MTDeviceRef);
+MTDeviceRef MTDeviceCreateFromService(io_service_t);
+io_service_t MTDeviceGetService(MTDeviceRef);
+
#define kNTracks 10
struct TouchTrack {
int id;
t@@ -280,25 +289,114 @@ enum
void screeninit(void);
void _flushmemscreen(Rectangle r);
+#ifdef MULTITOUCH
+static void
+RegisterMultitouch(void *ctx, io_iterator_t iter)
+{
+ io_object_t io;
+ MTDeviceRef dev;
+
+ while((io = IOIteratorNext(iter)) != 0){
+ dev = MTDeviceCreateFromService(io);
+ if (dev != nil){
+ MTRegisterContactFrameCallback(dev, touchCallback);
+ [osx.devicelist addObject:dev];
+ if(osx.active)
+ MTDeviceStart(dev, 0);
+ }
+
+ IOObjectRelease(io);
+ }
+}
+
static void
-InitMultiTouch(void)
+UnregisterMultitouch(void *ctx, io_iterator_t iter)
+{
+ io_object_t io;
+ MTDeviceRef dev;
+ int i;
+
+ while((io = IOIteratorNext(iter)) != 0){
+ for(i = 0; i < [osx.devicelist count]; i++){
+ dev = [osx.devicelist objectAtIndex:i];
+ if(IOObjectIsEqualTo(MTDeviceGetService(dev), io)){
+ if(osx.active)
+ MTDeviceStop(dev);
+ MTUnregisterContactFrameCallback(dev, touchCallback);
+ [osx.devicelist removeObjectAtIndex:i];
+ break;
+ }
+ }
+
+ IOObjectRelease(io);
+ }
+}
+
+#endif /*MULTITOUCH*/
+
+static void
+InitMultiTouch()
{
#ifdef MULTITOUCH
+ IONotificationPortRef port;
+ CFRunLoopSourceRef source;
+ io_iterator_t iter;
+ kern_return_t kr;
+ io_object_t obj;
int i;
- /*
- * Setup multitouch queues
- */
if(!multitouch)
return;
- for(i = 0; i<kNTracks; ++i)
+ osx.devicelist = [[NSMutableArray alloc] init];
+
+ for(i = 0; i < kNTracks; ++i)
tracks[i].id = -1;
- osx.devicelist = (NSMutableArray*)MTDeviceCreateList(); //grab our device list
- for(i = 0; i<[osx.devicelist count]; i++) { //iterate available devices
- MTRegisterContactFrameCallback([osx.devicelist objectAtIndex:i], touchCallback); //assign callback for device
+ port = IONotificationPortCreate(kIOMasterPortDefault);
+ if(port == nil){
+ fprint(2, "failed to get an IO notification port\n");
+ return;
+ }
+
+ source = IONotificationPortGetRunLoopSource(port);
+ if(source == nil){
+ fprint(2, "failed to get loop source for port");
+ return;
}
+
+ CFRunLoopAddSource(
+ (CFRunLoopRef)GetCFRunLoopFromEventLoop(GetMainEventLoop()),
+ source,
+ kCFRunLoopDefaultMode);
+
+ kr = IOServiceAddMatchingNotification(
+ port, kIOTerminatedNotification,
+ IOServiceMatching("AppleMultitouchDevice"),
+ &UnregisterMultitouch,
+ nil, &iter);
+
+ if(kr != KERN_SUCCESS){
+ fprint(2, "failed to add termination notification\n");
+ return;
+ }
+
+ /* Arm the notification */
+ while((obj = IOIteratorNext(iter)) != 0)
+ IOObjectRelease(obj);
+
+ kr = IOServiceAddMatchingNotification(
+ port, kIOMatchedNotification,
+ IOServiceMatching("AppleMultitouchDevice"),
+ &RegisterMultitouch,
+ nil, &iter);
+
+ if(kr != KERN_SUCCESS){
+ fprint(2, "failed to add matching notification\n");
+ return;
+ }
+
+ RegisterMultitouch(nil, iter);
#endif
}