Refactor touchpad movement generation by migrating MovementMaker to userland.

This considerably overhauls touchpad event generation, simplifying and
cleaning it up considerably:

 * Return the touchpad specifications through the MS_IS_TOUCHPAD ioctl.

 * There is now a dedicated MS_READ_TOUCHPAD ioctl, as touchpads
   can either return touchpad_movement structures or mouse_movement
   ones depending on what mode they are operating in.

 * Event repeating on timeouts is now handled in MovementMaker and
   the input_server control thread, so MS_READ_TOUCHPAD takes
   a timeout value. This means we can drop all the EventProducers.

 * Use the real floating-point math functions in MovementMaker now
   that we are running in userland.

 * Drop unused structures, constants, headers, and other things
   related to touchpad support.

Change-Id: I28cdb28e4100393a9338a8ebb865573cec13fc1e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5455
Reviewed-by: waddlesplash <[email protected]>

headers/os/add-ons/input_server/InputServerDevice.h

@@ -32,6 +32,7 @@ enum {
 	B_MOUSE_SPEED_CHANGED,
 	B_CLICK_SPEED_CHANGED,
 	B_MOUSE_ACCELERATION_CHANGED,
+	B_SET_TOUCHPAD_SETTINGS,
 };
 
 namespace BPrivate {

headers/private/input/keyboard_mouse_driver.h

@@ -62,9 +62,10 @@ enum {
 	MS_GET_CLICKSPEED,
 	MS_SET_CLICKSPEED,
 	MS_NUM_SERIAL_MICE,
+
 	MS_IS_TOUCHPAD,
-	MS_SET_TOUCHPAD_SETTINGS,
-	
+	MS_READ_TOUCHPAD,
+
 	IIC_WRITE = B_DEVICE_OP_CODES_END + 200, 
 	RESTART_SYSTEM,
 	SHUTDOWN_SYSTEM
@@ -127,6 +128,22 @@ typedef struct {
 #define B_PEN			0x08
 
 
+typedef struct {
+	uint16		edgeMotionWidth;
+
+	uint16		width;
+	uint16		areaStartX;
+	uint16		areaEndX;
+	uint16		areaStartY;
+	uint16		areaEndY;
+
+	uint16		minPressure;
+	// the value you reach when you hammer really hard on the touchpad
+	uint16		realMaxPressure;
+	uint16		maxPressure;
+} touchpad_specs;
+
+
 typedef struct {
 	uint8		buttons;
 	uint32		xPosition;
@@ -137,8 +154,18 @@ typedef struct {
 	uint8		fingerWidth;
 	// 1 - 4	normal width
 	// 5 - 11	very wide finger or palm
-	// 12		maximum reportable width; extrem wide contact
+	// 12		maximum reportable width; extreme wide contact
 } touchpad_movement;
 
 
+typedef struct {
+	bigtime_t timeout;
+	int32 event;
+	union {
+		touchpad_movement touchpad;
+		mouse_movement mouse;
+	} u;
+} touchpad_read;
+
+
 #endif	// _KB_MOUSE_DRIVER_H

headers/private/input/touchpad_driver.h

@@ -1,38 +0,0 @@
-//
-// kb_mouse_driver.h
-//
-#ifndef _TOUCHPAD_DRIVER_H
-#define _TOUCHPAD_DRIVER_H
-
-#include <SupportDefs.h>
-#include <Drivers.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define B_ONE_FINGER	0x01
-#define B_TWO_FINGER	0x02
-#define B_MULTI_FINGER	0x04
-#define B_PEN			0x08
-
-typedef struct {
-	uint8		buttons;
-	uint32		xPosition;
-	uint32		yPosition;
-	uint8		zPressure;
-	uint8		fingers;
-	bool		gesture;
-	uint8		fingerWidth;
-	// 1 - 4	normal width
-	// 5 - 11	very wide finger or palm
-	// 12		maximum reportable width; extrem wide contact
-} touchpad_movement;
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-