46  * Some documentation about touch points:
47  * The driver submits touch events with it's own (unique) touch point ID.
60  * being processed, it becomes a TouchPointInfo in dev->touch-touches which
65  * Check which devices need a bigger touch event queue and grow their
98  * Given the DDX-facing ID (which is _not_ DeviceEvent::detail.touch), find the
101  * @param dev The device to create the touch point for
102  * @param ddx_id Touch id assigned by the driver/ddx
111     if (!dev->touch)  in TouchFindByDDXID()
127  * If no other touch points are active, mark new touchpoint for pointer
130  * Returns NULL on failure (i.e. if another touch with that ID is already active,
138     TouchClassPtr t = dev->touch;  in TouchBeginDDXTouch()
154             /* Only emulate pointer events on the first touch */  in TouchBeginDDXTouch()
157             else if (!ti)           /* ti is now first non-active touch rec */  in TouchBeginDDXTouch()
187     TouchClassPtr t = dev->touch;  in TouchEndDDXTouch()
238     if (!device->touch || index >= device->touch->num_touches)  in TouchFreeTouchPoint()
240     ti = &device->touch->touches[index];  in TouchFreeTouchPoint()
260  * Given a client-facing ID (e.g. DeviceEvent::detail.touch), find the
266     TouchClassPtr t = dev->touch;  in TouchFindByClientID()
286  * Returns NULL on failure (i.e. if another touch with that ID is already active,
294     TouchClassPtr t = dev->touch;  in TouchBeginTouch()
304      * touch ids without lifting that one finger off once. In which case  in TouchBeginTouch()
321     /* If we get here, then we've run out of touches: enlarge dev->touch and  in TouchBeginTouch()
350                 !dev->touch->buttonsDown && GrabIsPointerGrab(grab))  in TouchEndTouch()
373  * Allocate the event history for this touch pointer. Calling this on a
403  * A touch event history consists of one TouchBegin and several TouchUpdate
437         DebugF("source device %d: history size %zu overflowing for touch %u\n",  in TouchEventHistoryPush()
460            listener. If that is a touch listener, everything is dandy.  in TouchEventHistoryReplay()
467            prevents handling of touch events for ownership listeners who  in TouchEventHistoryReplay()
502     TouchClassPtr t = dev->touch;  in TouchBuildDependentSpriteTrace()
507      * existing touch's sprite if possible, else use the device's sprite. */  in TouchBuildDependentSpriteTrace()
544     TouchClassPtr t = sourcedev->touch;  in TouchBuildSprite()
548         /* Focus immediately under the touchpoint in direct touch mode.  in TouchBuildSprite()
573  * Copy the touch event into the pointer_event, switching the required
576  * @param event The original touch event
614                  "Non-emulating touch event\n");  in TouchConvertToPointerEvent()
634  * touch event or 0 if no such event type exists.
659  * the touch sequence.
668  * Add the resource to this touch's listeners.
697  * Remove the resource from this touch's listeners.
884     /* We set up an active touch listener for existing touches, but not any  in TouchSetupListeners()
909  * Remove the touch pointer grab from the device. Called from
919     if (!dev->touch)  in TouchRemovePointerGrab()
937 /* As touch grabs don't turn into active grabs with their own resources, we
952         if (!dev->touch)  in TouchListenerGone()
955         for (i = 0; i < dev->touch->num_touches; i++) {  in TouchListenerGone()
956             ti = &dev->touch->touches[i];  in TouchListenerGone()
998     BUG_RETURN_VAL_MSG(!events, BadAlloc, "Failed to allocate touch ownership events\n");  in TouchListenerAcceptReject()
1002     BUG_WARN_MSG(nev == 0, "Failed to get touch ownership events\n");  in TouchListenerAcceptReject()
1019     if (!dev->touch) {  in TouchAcceptReject()
1073  * @param ti The touch point record to deliver the event for.
1084     /* We're not processing a touch end for a frozen device */  in TouchEmitTouchEnd()