Difference between revisions of "Unit Mouse"

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{| class="wikitable" style="font-size: 14px; background: white;"
 
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|-
 
|-
−
! '''Note'''
+
! Note
 
| Called only during system startup
 
| Called only during system startup
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if packets are ready, ERROR_NO_MORE_ITEMS if not or another error code on failure
 
| ERROR_SUCCESS if packets are ready, ERROR_NO_MORE_ITEMS if not or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Buffer'''
+
! Buffer
 
| Pointer to a buffer to copy the mouse data packets to
 
| Pointer to a buffer to copy the mouse data packets to
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
|-
 
|-
−
! '''Count'''
+
! Count
 
| The number of mouse data packets copied to the buffer
 
| The number of mouse data packets copied to the buffer
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Buffer'''
+
! Buffer
 
| Pointer to a buffer to copy the mouse data packets to
 
| Pointer to a buffer to copy the mouse data packets to
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
|-
 
|-
−
! '''Flags'''
+
! Flags
 
| The flags for the behaviour of the read (eg MOUSE_FLAG_NON_BLOCK)
 
| The flags for the behaviour of the read (eg MOUSE_FLAG_NON_BLOCK)
 
|-
 
|-
−
! '''Count'''
+
! Count
 
| The number of mouse data packets copied to the buffer
 
| The number of mouse data packets copied to the buffer
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Buffer'''
+
! Buffer
 
| Pointer to a buffer to copy the mouse data packets from
 
| Pointer to a buffer to copy the mouse data packets from
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
|-
 
|-
−
! '''Count'''
+
! Count
 
| The number of mouse data packets to copy from the buffer
 
| The number of mouse data packets to copy from the buffer
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to read from
 
| The mouse device to read from
 
|-
 
|-
−
! '''Buffer'''
+
! Buffer
 
| Pointer to a buffer to copy the mouse data packets to
 
| Pointer to a buffer to copy the mouse data packets to
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
| The size of the buffer in bytes (Must be at least TMouseData or greater)
 
|-
 
|-
−
! '''Count'''
+
! Count
 
| The number of mouse data packets copied to the buffer
 
| The number of mouse data packets copied to the buffer
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to control
 
| The mouse device to control
 
|-
 
|-
−
! '''Request'''
+
! Request
 
| The request code for the operation (eg MOUSE_CONTROL_GET_FLAG)
 
| The request code for the operation (eg MOUSE_CONTROL_GET_FLAG)
 
|-
 
|-
−
! '''Argument1'''
+
! Argument1
 
| The first argument for the operation (Dependent on request code)
 
| The first argument for the operation (Dependent on request code)
 
|-
 
|-
−
! '''Argument2'''
+
! Argument2
 
| The second argument for the operation (Dependent on request code)
 
| The second argument for the operation (Dependent on request code)
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse to set the state for
 
| The mouse to set the state for
 
|-
 
|-
−
! '''State'''
+
! State
 
| The new state to set and notify
 
| The new state to set and notify
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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|-
 
|-
−
! '''Return'''
+
! Return
 
| Pointer to new Mouse device entry or nil if mouse could not be created
 
| Pointer to new Mouse device entry or nil if mouse could not be created
 
|-
 
|-
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|-
 
|-
−
! '''Size'''
+
! Size
 
| Size in bytes to allocate for new mouse (Including the mouse device entry)
 
| Size in bytes to allocate for new mouse (Including the mouse device entry)
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| Pointer to new Mouse device entry or nil if mouse could not be created
 
| Pointer to new Mouse device entry or nil if mouse could not be created
 
|-
 
|-
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|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to destroy
 
| The mouse device to destroy
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to register
 
| The mouse device to register
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to deregister
 
| The mouse device to deregister
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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|-
 
|-
−
! '''MouseId'''
+
! MouseId
 
| The ID number of the mouse to find
 
| The ID number of the mouse to find
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| Pointer to mouse device entry or nil if not found
 
| Pointer to mouse device entry or nil if not found
 
|-
 
|-
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|-
 
|-
−
! '''Name'''
+
! Name
 
| The name of the mouse to find (eg Mouse0)
 
| The name of the mouse to find (eg Mouse0)
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| Pointer to mouse device entry or nil if not found
 
| Pointer to mouse device entry or nil if not found
 
|-
 
|-
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|-
 
|-
−
! '''Description'''
+
! Description
 
| The description of the mouse to find (eg USB HID Mouse)
 
| The description of the mouse to find (eg USB HID Mouse)
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| Pointer to mouse device entry or nil if not found
 
| Pointer to mouse device entry or nil if not found
 
|-
 
|-
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|-
 
|-
−
! '''Callback'''
+
! Callback
 
| The callback function to call for each mouse in the table
 
| The callback function to call for each mouse in the table
 
|-
 
|-
−
! '''Data'''
+
! Data
 
| A private data pointer to pass to callback for each mouse in the table
 
| A private data pointer to pass to callback for each mouse in the table
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
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|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to notify changes for (Optional, pass nil for all mice)
 
| The mouse device to notify changes for (Optional, pass nil for all mice)
 
|-
 
|-
−
! '''Callback'''
+
! Callback
 
| The function to call when a notification event occurs
 
| The function to call when a notification event occurs
 
|-
 
|-
−
! '''Data'''
+
! Data
 
| A private data pointer to pass to callback when a notification event occurs
 
| A private data pointer to pass to callback when a notification event occurs
 
|-
 
|-
−
! '''Notification'''
+
! Notification
 
| The events to register for notification of (eg DEVICE_NOTIFICATION_REGISTER)
 
| The events to register for notification of (eg DEVICE_NOTIFICATION_REGISTER)
 
|-
 
|-
−
! '''Flags'''
+
! Flags
 
| The flags to control the notification (eg NOTIFIER_FLAG_WORKER)
 
| The flags to control the notification (eg NOTIFIER_FLAG_WORKER)
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
−
| Not intended to be called directly by applications, use MouseDeviceRead instead
+
| Not intended to be called directly by applications, use MouseDeviceRead instead.
 
|-
 
|-
 
|}
 
|}
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|-
 
|-
−
! '''Note'''
+
! Note
−
| Not intended to be called directly by applications, use MouseDeviceControl instead
+
| Not intended to be called directly by applications, use MouseDeviceControl instead.
 
|-
 
|-
 
|}
 
|}
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|-
 
|-
−
! '''Device'''
+
! Device
 
| The USB device to attempt to bind to
 
| The USB device to attempt to bind to
 
|-
 
|-
−
! '''Interface'''
+
! Interrface
 
| The USB interface to attempt to bind to (or nil for whole device)
 
| The USB interface to attempt to bind to (or nil for whole device)
 
|-
 
|-
−
! '''Return'''
+
! Return
−
| USB_STATUS_SUCCESS if completed, USB_STATUS_DEVICE_UNSUPPORTED if unsupported or another error code on failure
+
| USB_STATUS_SUCCESS if completed, USB_STATUS_DEVICE_UNSUPPORTED if unsupported or another error code on failure.
 
|-
 
|-
 
|}
 
|}
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|-
 
|-
−
! '''Device'''
+
! Device
 
| The USB device to unbind from
 
| The USB device to unbind from
 
|-
 
|-
−
! '''Interface'''
+
! Interrface
 
| The USB interface to unbind from (or nil for whole device)
 
| The USB interface to unbind from (or nil for whole device)
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| USB_STATUS_SUCCESS if completed or another error code on failure
 
| USB_STATUS_SUCCESS if completed or another error code on failure
 
|-
 
|-
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|-
 
|-
−
! '''Request'''
+
! Request
 
| The USB request which has completed
 
| The USB request which has completed
 
|-
 
|-
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|-
 
|-
−
! '''Request'''
+
! Request
 
| The USB request which has completed
 
| The USB request which has completed
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| Request is passed to worker thread for processing to prevent blocking the USB completion
 
| Request is passed to worker thread for processing to prevent blocking the USB completion
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The mouse device to insert data for
 
| The mouse device to insert data for
 
|-
 
|-
−
! '''Data'''
+
! Data
 
| The TMouseData entry to insert
 
| The TMouseData entry to insert
 
|-
 
|-
−
! '''Signal'''
+
! Signal
 
| If True then signal that new data is available in the buffer
 
| If True then signal that new data is available in the buffer
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| ERROR_SUCCESS if completed or another error code on failure
 
| ERROR_SUCCESS if completed or another error code on failure
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| Caller must hold the mouse lock
 
| Caller must hold the mouse lock
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
−
! '''Mouse'''
+
! Mouse
 
| The USB mouse device to set the report protocol for
 
| The USB mouse device to set the report protocol for
 
|-
 
|-
−
! '''Protocol'''
+
! Protocol
 
| The report protocol to set (eg USB_HID_PROTOCOL_BOOT)
 
| The report protocol to set (eg USB_HID_PROTOCOL_BOOT)
 
|-
 
|-
−
! '''Return'''
+
! Return
 
| USB_STATUS_SUCCESS if completed or another USB error code on failure
 
| USB_STATUS_SUCCESS if completed or another USB error code on failure
 
|-
 
|-

Revision as of 04:51, 20 April 2018

Return to Unit Reference


Description

Ultibo Mouse interface unit

This unit provides both the Mouse device interface and the generic USB HID mouse driver.

Constants


Mouse specific constants MOUSE_*
MOUSE_NAME_PREFIX = 'Mouse'; Name prefix for Mouse Devices


Mouse device type MOUSE_TYPE_*
MOUSE_TYPE_NONE = 0;  
MOUSE_TYPE_USB = 1;  
MOUSE_TYPE_PS2 = 2;  
MOUSE_TYPE_SERIAL = 3;  
 
MOUSE_TYPE_MAX = 3;  


Mouse device state MOUSE_STATE_*
MOUSE_STATE_DETACHED = 0;  
MOUSE_STATE_DETACHING = 1;  
MOUSE_STATE_ATTACHING = 2;  
MOUSE_STATE_ATTACHED = 3;  
 
MOUSE_STATE_MAX = 3;  


Mouse device flag MOUSE_FLAG_*
MOUSE_FLAG_NONE = $00000000;  
MOUSE_FLAG_NON_BLOCK = $00000001; If set device reads are non blocking (Also supported in Flags parameter of MouseReadEx)
MOUSE_FLAG_DIRECT_READ = $00000002; If set device writes mouse data to its local buffer and which must be read using MouseDeviceRead
MOUSE_FLAG_SWAP_BUTTONS = $00000004; If set left and right mouse buttons will be swapped in mouse data
MOUSE_FLAG_PEEK_BUFFER = $00000008; Peek at the buffer to see if any data is available, don't remove it. (Used only in Flags parameter of MouseReadEx)
 
Flags supported by MOUSE_CONTROL_GET/SET/CLEAR_FLAG
MOUSE_FLAG_MASK = MOUSE_FLAG_NON_BLOCK or MOUSE_FLAG_DIRECT_READ or MOUSE_FLAG_SWAP_BUTTONS;  


Mouse device control code MOUSE_CONTROL_*
MOUSE_CONTROL_GET_FLAG = 1; Get Flag
MOUSE_CONTROL_SET_FLAG = 2; Set Flag
MOUSE_CONTROL_CLEAR_FLAG = 3; Clear Flag
MOUSE_CONTROL_FLUSH_BUFFER = 4; Flush Buffer
MOUSE_CONTROL_GET_SAMPLE_RATE = 5; Get Sample Rate
MOUSE_CONTROL_SET_SAMPLE_RATE = 6; Set Sample Rate


Mouse buffer size MOUSE_BUFFER_*
MOUSE_BUFFER_SIZE = 512;  


Mouse sampling rate MOUSE_SAMPLE_*
MOUSE_SAMPLE_RATE = 100; 100 samples/sec


Mouse data definition MOUSE_LEFT_*, MOUSE_RIGHT_*
Values for TMouseData.Buttons
 
MOUSE_LEFT_BUTTON = $0001; The Left mouse button is pressed
MOUSE_RIGHT_BUTTON = $0002; The Right mouse button is pressed
MOUSE_MIDDLE_BUTTON = $0004; The Middle mouse button is pressed
MOUSE_SIDE_BUTTON = $0008; The Side mouse button is pressed
MOUSE_EXTRA_BUTTON = $0010; The Extra mouse button is pressed
MOUSE_TOUCH_BUTTON = $0020; The Touch screen is being touched
MOUSE_ABSOLUTE_X = $0040; The OffsetX value is absolute not relative
MOUSE_ABSOLUTE_Y = $0080; The OffsetY value is absolute not relative
MOUSE_ABSOLUTE_WHEEL = $0100; The OffsetWheel value is absolute not relative


Mouse logging MOUSE_LOG_*
MOUSE_LOG_LEVEL_DEBUG = LOG_LEVEL_DEBUG; Mouse debugging messages
MOUSE_LOG_LEVEL_INFO = LOG_LEVEL_INFO; Mouse informational messages, such as a device being attached or detached
MOUSE_LOG_LEVEL_WARN = LOG_LEVEL_WARN; Mouse warning messages
MOUSE_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR; Mouse error messages
MOUSE_LOG_LEVEL_NONE = LOG_LEVEL_NONE; No Mouse messages


USB mouse specific constants USBMOUSE_*
USBMOUSE_DRIVER_NAME = 'USB Mouse Driver (HID boot protocol)'; Name of USB mouse driver
 
USBMOUSE_MOUSE_DESCRIPTION = 'USB HID Mouse'; Description of USB mouse device
 
HID Interface Subclass types (See USB HID v1.11 specification)
USB_HID_SUBCLASS_NONE = 0; Section 4.2
USB_HID_SUBCLASS_BOOT = 1; Section 4.2
 
HID Interface Protocol types (See USB HID v1.11 specification)
USB_HID_BOOT_PROTOCOL_NONE = 0; Section 4.3
USB_HID_BOOT_PROTOCOL_KEYBOARD = 1; Section 4.3
USB_HID_BOOT_PROTOCOL_MOUSE = 2; Section 4.3
 
HID Class Descriptor Types (See USB HID v1.11 specification)
USB_HID_DESCRIPTOR_TYPE_HID = $21; Section 7.1
USB_HID_DESCRIPTOR_TYPE_REPORT = $22; Section 7.1
USB_HID_DESCRIPTOR_TYPE_PHYSICAL_DESCRIPTOR = $23; Section 7.1
 
HID Request types
USB_HID_REQUEST_GET_REPORT = $01;  
USB_HID_REQUEST_GET_IDLE = $02;  
USB_HID_REQUEST_GET_PROTOCOL = $03; Section 7.2
USB_HID_REQUEST_SET_REPORT = $09;  
USB_HID_REQUEST_SET_IDLE = $0A;  
USB_HID_REQUEST_SET_PROTOCOL = $0B; Section 7.2
 
HID Protocol types
USB_HID_PROTOCOL_BOOT = 0; Section 7.2.5
USB_HID_PROTOCOL_REPORT = 1; Section 7.2.5
 
HID Report types
USB_HID_REPORT_INPUT = 1; Section 7.2.1
USB_HID_REPORT_OUTPUT = 2; Section 7.2.1
USB_HID_REPORT_FEATURE = 3; Section 7.2.1
 
HID Report IDs
USB_HID_REPORTID_NONE = 0; Section 7.2.1
 
HID Boot Protocol Button bits
USB_HID_BOOT_LEFT_BUTTON = (1 shl 0);  
USB_HID_BOOT_RIGHT_BUTTON = (1 shl 1);  
USB_HID_BOOT_MIDDLE_BUTTON = (1 shl 2);  
USB_HID_BOOT_SIDE_BUTTON = (1 shl 3);  
USB_HID_BOOT_EXTRA_BUTTON = (1 shl 4);  
 
HID Boot Protocol Report data
USB_HID_BOOT_REPORT_SIZE = 3; Appendix B of HID Device Class Definition 1.11
USB_HID_BOOT_DATA_SIZE = 8; Allocate more than the minimum to allow for extra data


Type definitions


Mouse data

PMouseData = ^TMouseData;

TMouseData = record

Buttons:Word;  
OffsetX:SmallInt;  
OffsetY:SmallInt;  
OffsetWheel:SmallInt;  

Mouse buffer

PMouseBuffer = ^TMouseBuffer;

TMouseBuffer = record

Wait:TSemaphoreHandle; Buffer ready semaphore
Start:LongWord; Index of first buffer ready
Count:LongWord; Number of entries ready in buffer
Buffer:array[0..(MOUSE_BUFFER_SIZE - 1)] of TMouseData;  

Mouse enumeration callback

TMouseEnumerate = function(Mouse:PMouseDevice; Data:Pointer):LongWord;

Mouse notification callback

TMouseNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;

Mouse device read

TMouseDeviceRead = function(Mouse:PMouseDevice; Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord;

Mouse device control

TMouseDeviceControl = function(Mouse:PMouseDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;

Mouse device types

PMouseDevice = ^TMouseDevice;

TMouseDevice = record

Device Properties
Device:TDevice; The Device entry for this Mouse
Mouse Properties
MouseId:LongWord; Unique Id of this Mouse in the Mouse table
MouseState:LongWord; Mouse state (eg MOUSE_STATE_ATTACHED)
MouseRate:LongWord; Mouse sample rate (Samples per second)
DeviceRead:TMouseDeviceRead; A Device specific DeviceRead method implementing a standard Mouse device interface (Or nil if the default method is suitable)
DeviceControl:TMouseDeviceControl; A Device specific DeviceControl method implementing a standard Mouse device interface (Or nil if the default method is suitable)
Driver Properties
Lock:TMutexHandle; Mouse lock
Buffer:TMouseBuffer; Mouse input buffer
Statistics Properties
ReceiveCount:LongWord;  
ReceiveErrors:LongWord;  
BufferOverruns:LongWord;  
Internal Properties
Prev:PMouseDevice; Previous entry in Mouse table
Next:PMouseDevice; Next entry in Mouse table

USB mouse device types

PUSBMouseDevice = ^TUSBMouseDevice;

TUSBMouseDevice = record

Mouse Properties
Mouse:TMouseDevice;  
USB Properties
HIDInterface:PUSBInterface; USB HID Mouse Interface
ReportRequest:PUSBRequest; USB request for mouse report data
ReportEndpoint:PUSBEndpointDescriptor; USB Mouse Interrupt IN Endpoint
PendingCount:LongWord; Number of USB requests pending for this mouse
WaiterThread:TThreadId; Thread waiting for pending requests to complete (for mouse detachment)


Public variables


Mouse logging

MOUSE_DEFAULT_LOG_LEVEL:LongWord = MOUSE_LOG_LEVEL_DEBUG; Minimum level for Mouse messages. Only messages with level greater than or equal to this will be printed.
MOUSE_LOG_ENABLED:Boolean;


Function declarations


Initialization functions 

procedure MouseInit;
Description: Initialize the mouse unit, device table and USB mouse driver
Note Called only during system startup


Mouse functions 

function MousePeek:LongWord;
Description: Peek at the global mouse buffer to see if any data packets are ready
Return ERROR_SUCCESS if packets are ready, ERROR_NO_MORE_ITEMS if not or another error code on failure 


function MouseRead(Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord;
Description: Read mouse data packets from the global mouse buffer
Buffer Pointer to a buffer to copy the mouse data packets to
Size The size of the buffer in bytes (Must be at least TMouseData or greater)
Count The number of mouse data packets copied to the buffer
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseReadEx(Buffer:Pointer; Size,Flags:LongWord; var Count:LongWord):LongWord;
Description: Read mouse data packets from the global mouse buffer
Buffer Pointer to a buffer to copy the mouse data packets to
Size The size of the buffer in bytes (Must be at least TMouseData or greater)
Flags The flags for the behaviour of the read (eg MOUSE_FLAG_NON_BLOCK)
Count The number of mouse data packets copied to the buffer
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseWrite(Buffer:Pointer; Size,Count:LongWord):LongWord;
Description: Write mouse data packets to the global mouse buffer
Buffer Pointer to a buffer to copy the mouse data packets from
Size The size of the buffer in bytes (Must be at least TMouseData or greater)
Count The number of mouse data packets to copy from the buffer
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseFlush:LongWord;
Description: Flush the contents of the global mouse buffer
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceRead(Mouse:PMouseDevice; Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord;
Description: Read mouse data packets from the buffer of the specified mouse
Mouse The mouse device to read from
Buffer Pointer to a buffer to copy the mouse data packets to
Size The size of the buffer in bytes (Must be at least TMouseData or greater)
Count The number of mouse data packets copied to the buffer
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceControl(Mouse:PMouseDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
Description: Perform a control request on the specified mouse device
Mouse The mouse device to control
Request The request code for the operation (eg MOUSE_CONTROL_GET_FLAG)
Argument1 The first argument for the operation (Dependent on request code)
Argument2 The second argument for the operation (Dependent on request code)
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceSetState(Mouse:PMouseDevice; State:LongWord):LongWord;
Description: Set the state of the specified mouse and send a notification
Mouse The mouse to set the state for
State The new state to set and notify
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceCreate:PMouseDevice;
Description: Create a new Mouse device entry
Return Pointer to new Mouse device entry or nil if mouse could not be created 


function MouseDeviceCreateEx(Size:LongWord):PMouseDevice;
Description: Create a new Mouse device entry
Size Size in bytes to allocate for new mouse (Including the mouse device entry)
Return Pointer to new Mouse device entry or nil if mouse could not be created 


function MouseDeviceDestroy(Mouse:PMouseDevice):LongWord;
Description: Destroy an existing Mouse device entry
Mouse The mouse device to destroy
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceRegister(Mouse:PMouseDevice):LongWord;
Description: Register a new Mouse device in the Mouse table
Mouse The mouse device to register
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceDeregister(Mouse:PMouseDevice):LongWord;
Description: Deregister a Mouse device from the Mouse table
Mouse The mouse device to deregister
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceFind(MouseId:LongWord):PMouseDevice;
Description: Find a mouse device by ID in the mouse table
MouseId The ID number of the mouse to find
Return Pointer to mouse device entry or nil if not found 


function MouseDeviceFindByName(const Name:String):PMouseDevice; inline;
Description: Find a mouse device by name in the mouse table
Name The name of the mouse to find (eg Mouse0)
Return Pointer to mouse device entry or nil if not found 


function MouseDeviceFindByDescription(const Description:String):PMouseDevice; inline;
Description: Find a mouse device by description in the mouse table
Description The description of the mouse to find (eg USB HID Mouse)
Return Pointer to mouse device entry or nil if not found 


function MouseDeviceEnumerate(Callback:TMouseEnumerate; Data:Pointer):LongWord;
Description: Enumerate all mouse devices in the mouse table
Callback The callback function to call for each mouse in the table
Data A private data pointer to pass to callback for each mouse in the table
Return ERROR_SUCCESS if completed or another error code on failure 


function MouseDeviceNotification(Mouse:PMouseDevice; Callback:TMouseNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: Register a notification for mouse device changes
Mouse The mouse device to notify changes for (Optional, pass nil for all mice)
Callback The function to call when a notification event occurs
Data A private data pointer to pass to callback when a notification event occurs
Notification The events to register for notification of (eg DEVICE_NOTIFICATION_REGISTER)
Flags The flags to control the notification (eg NOTIFIER_FLAG_WORKER)


RTL console functions 

function SysConsoleHideMouse(AUserData:Pointer):Boolean;
Description: Handler for Platform ConsoleHideMouse function
Note None documented 


function SysConsoleShowMouse(X,Y:LongWord; AUserData:Pointer):Boolean;
Description: Handler for Platform ConsoleShowMouse function
Note None documented 


function SysConsoleReadMouse(var X,Y,Buttons:LongWord; AUserData:Pointer):Boolean;
Description: Handler for Platform ConsoleReadMouse function
Note None documented


USB mouse functions 

function USBMouseDeviceRead(Mouse:PMouseDevice; Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord;
Description: Implementation of MouseDeviceRead API for USB Mouse
Note Not intended to be called directly by applications, use MouseDeviceRead instead. 


function USBMouseDeviceControl(Mouse:PMouseDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
Description: Implementation of MouseDeviceControl API for USB Mouse
Note Not intended to be called directly by applications, use MouseDeviceControl instead. 


function USBMouseDriverBind(Device:PUSBDevice; Interrface:PUSBInterface):LongWord;
Description: Bind the Mouse driver to a USB device if it is suitable
Device The USB device to attempt to bind to
Interrface The USB interface to attempt to bind to (or nil for whole device)
Return USB_STATUS_SUCCESS if completed, USB_STATUS_DEVICE_UNSUPPORTED if unsupported or another error code on failure. 


function USBMouseDriverUnbind(Device:PUSBDevice; Interrface:PUSBInterface):LongWord;
Description: Unbind the Mouse driver from a USB device
Device The USB device to unbind from
Interrface The USB interface to unbind from (or nil for whole device)
Return USB_STATUS_SUCCESS if completed or another error code on failure 


procedure USBMouseReportWorker(Request:PUSBRequest);
Description: Called (by a Worker thread) to process a completed USB request from a USB mouse IN interrupt endpoint
Request The USB request which has completed 


procedure USBMouseReportComplete(Request:PUSBRequest);
Description: Called when a USB request from a USB mouse IN interrupt endpoint completes
Request The USB request which has completed
Note Request is passed to worker thread for processing to prevent blocking the USB completion


Mouse helper functions 

function MouseGetCount:LongWord; inline;
Description: Get the current mouse count
Note None documented 


function MouseDeviceCheck(Mouse:PMouseDevice):PMouseDevice;
Description: Check if the supplied Mouse is in the mouse table
Note None documented 


function MouseDeviceTypeToString(MouseType:LongWord):String;
Description: To be documented
Note None documented 


function MouseDeviceStateToString(MouseState:LongWord):String;
Description: To be documented
Note None documented 


function MouseDeviceStateToNotification(State:LongWord):LongWord;
Description: Convert a Mouse state value into the notification code for device notifications
Note None documented 


function MouseInsertData(Mouse:PMouseDevice; Data:PMouseData; Signal:Boolean):LongWord;
Description: Insert a TMouseData entry into the mouse buffer (Direct or Global)
Mouse The mouse device to insert data for
Data The TMouseData entry to insert
Signal If True then signal that new data is available in the buffer
Return ERROR_SUCCESS if completed or another error code on failure
Note Caller must hold the mouse lock 


procedure MouseLog(Level:LongWord; Mouse:PMouseDevice; const AText:String);
Description: To be documented
Note None documented 


procedure MouseLogInfo(Mouse:PMouseDevice; const AText:String); inline;
Description: To be documented
Note None documented 


procedure MouseLogWarn(Mouse:PMouseDevice; const AText:String); inline;
Description: To be documented
Note None documented 


procedure MouseLogError(Mouse:PMouseDevice; const AText:String); inline;
Description: To be documented
Note None documented 


procedure MouseLogDebug(Mouse:PMouseDevice;const AText:String); inline;
Description: To be documented
Note None documented


USB mouse helper functions 

function USBMouseDeviceSetProtocol(Mouse:PUSBMouseDevice; Protocol:Byte):LongWord;
Description: Set the report protocol for a USB mouse device
Mouse The USB mouse device to set the report protocol for
Protocol The report protocol to set (eg USB_HID_PROTOCOL_BOOT)
Return USB_STATUS_SUCCESS if completed or another USB error code on failure


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