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Description
Ultibo Mouse interface unit
This unit provides both the Mouse device interface and the generic USB HID mouse driver.
Constants
[Expand]
Mouse specific constants MOUSE_*
MOUSE_NAME_PREFIX = 'Mouse';
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Name prefix for Mouse Devices
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[Expand]
Mouse device type MOUSE_TYPE_*
MOUSE_TYPE_NONE = 0;
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MOUSE_TYPE_USB = 1;
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MOUSE_TYPE_PS2 = 2;
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MOUSE_TYPE_SERIAL = 3;
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MOUSE_TYPE_MAX = 3;
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[Expand]
Mouse device state MOUSE_STATE_*
MOUSE_STATE_DETACHED = 0;
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MOUSE_STATE_DETACHING = 1;
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MOUSE_STATE_ATTACHING = 2;
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MOUSE_STATE_ATTACHED = 3;
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MOUSE_STATE_MAX = 3;
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[Expand]
Mouse device flag MOUSE_FLAG_*
MOUSE_FLAG_NONE = $00000000;
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MOUSE_FLAG_NON_BLOCK = $00000001;
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If set device reads are non blocking (Also supported in Flags parameter of MouseReadEx)
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MOUSE_FLAG_DIRECT_READ = $00000002;
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If set device writes mouse data to its local buffer and which must be read using MouseDeviceRead
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MOUSE_FLAG_SWAP_BUTTONS = $00000004;
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If set left and right mouse buttons will be swapped in mouse data
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MOUSE_FLAG_PEEK_BUFFER = $00000008;
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Peek at the buffer to see if any data is available, don't remove it. (Used only in Flags parameter of MouseReadEx)
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| Flags supported by MOUSE_CONTROL_GET/SET/CLEAR_FLAG
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MOUSE_FLAG_MASK = MOUSE_FLAG_NON_BLOCK or MOUSE_FLAG_DIRECT_READ or MOUSE_FLAG_SWAP_BUTTONS;
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[Expand]
Mouse device control code MOUSE_CONTROL_*
MOUSE_CONTROL_GET_FLAG = 1;
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Get Flag
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MOUSE_CONTROL_SET_FLAG = 2;
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Set Flag
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MOUSE_CONTROL_CLEAR_FLAG = 3;
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Clear Flag
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MOUSE_CONTROL_FLUSH_BUFFER = 4;
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Flush Buffer
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MOUSE_CONTROL_GET_SAMPLE_RATE = 5;
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Get Sample Rate
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MOUSE_CONTROL_SET_SAMPLE_RATE = 6;
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Set Sample Rate
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MOUSE_CONTROL_GET_MAX_X = 7;
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Get Maximum X value (Only applies to Absolute X values)
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MOUSE_CONTROL_GET_MAX_Y = 8;
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Get Maximum Y value (Only applies to Absolute Y values)
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MOUSE_CONTROL_GET_MAX_WHEEL = 9;
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Get Maximum Wheel value (Only applies to Absolute Wheel values)
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MOUSE_CONTROL_GET_MAX_BUTTONS = 10;
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Get Maximum Buttons mask (eg MOUSE_LEFT_BUTTON or MOUSE_RIGHT_BUTTON etc)
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MOUSE_CONTROL_GET_ROTATION = 11;
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Get Rotation value (0, 90, 180, 270)(Only where supported by the driver)
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MOUSE_CONTROL_SET_ROTATION = 12;
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Set Rotation value (0, 90, 180, 270)(Only where supported by the driver)
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[Expand]
Mouse buffer size MOUSE_BUFFER_*
[Expand]
Mouse sampling rate MOUSE_SAMPLE_*
MOUSE_SAMPLE_RATE = 100;
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100 samples/sec
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[Expand]
Mouse data definition MOUSE_LEFT_*, MOUSE_RIGHT_*
| Values for TMouseData.Buttons
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MOUSE_LEFT_BUTTON = $0001;
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The Left mouse button is pressed
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MOUSE_RIGHT_BUTTON = $0002;
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The Right mouse button is pressed
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MOUSE_MIDDLE_BUTTON = $0004;
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The Middle mouse button is pressed
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MOUSE_SIDE_BUTTON = $0008;
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The Side mouse button is pressed
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MOUSE_EXTRA_BUTTON = $0010;
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The Extra mouse button is pressed
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MOUSE_TOUCH_BUTTON = $0020;
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The Touch screen is being touched
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MOUSE_ABSOLUTE_X = $0040;
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The OffsetX value is absolute not relative
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MOUSE_ABSOLUTE_Y = $0080;
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The OffsetY value is absolute not relative
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MOUSE_ABSOLUTE_WHEEL = $0100;
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The OffsetWheel value is absolute not relative
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[Expand]
Mouse rotation MOUSE_ROTATION_*
MOUSE_ROTATION_0 = FRAMEBUFFER_ROTATION_0;
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No rotation
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MOUSE_ROTATION_90 = FRAMEBUFFER_ROTATION_90;
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90 degree rotation
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MOUSE_ROTATION_180 = FRAMEBUFFER_ROTATION_180;
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180 degree rotation
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MOUSE_ROTATION_270 = FRAMEBUFFER_ROTATION_270;
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270 degree rotation
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[Expand]
Mouse logging MOUSE_LOG_*
MOUSE_LOG_LEVEL_DEBUG = LOG_LEVEL_DEBUG;
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Mouse debugging messages
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MOUSE_LOG_LEVEL_INFO = LOG_LEVEL_INFO;
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Mouse informational messages, such as a device being attached or detached
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MOUSE_LOG_LEVEL_WARN = LOG_LEVEL_WARN;
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Mouse warning messages
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MOUSE_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR;
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Mouse error messages
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MOUSE_LOG_LEVEL_NONE = LOG_LEVEL_NONE;
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No Mouse messages
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[Expand]
USB mouse specific constants USBMOUSE_*
USBMOUSE_DRIVER_NAME = 'USB Mouse Driver (HID boot protocol)';
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Name of USB mouse driver
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USBMOUSE_MOUSE_DESCRIPTION = 'USB HID Mouse';
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Description of USB mouse device
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| HID Interface Subclass types (See USB HID v1.11 specification)
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USB_HID_SUBCLASS_NONE = 0;
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Section 4.2
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USB_HID_SUBCLASS_BOOT = 1;
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Section 4.2
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| HID Interface Protocol types (See USB HID v1.11 specification)
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USB_HID_BOOT_PROTOCOL_NONE = 0;
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Section 4.3
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USB_HID_BOOT_PROTOCOL_KEYBOARD = 1;
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Section 4.3
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USB_HID_BOOT_PROTOCOL_MOUSE = 2;
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Section 4.3
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| HID Class Descriptor Types (See USB HID v1.11 specification)
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USB_HID_DESCRIPTOR_TYPE_HID = $21;
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Section 7.1
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USB_HID_DESCRIPTOR_TYPE_REPORT = $22;
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Section 7.1
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USB_HID_DESCRIPTOR_TYPE_PHYSICAL_DESCRIPTOR = $23;
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Section 7.1
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| HID Request types
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USB_HID_REQUEST_GET_REPORT = $01;
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USB_HID_REQUEST_GET_IDLE = $02;
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USB_HID_REQUEST_GET_PROTOCOL = $03;
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Section 7.2
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USB_HID_REQUEST_SET_REPORT = $09;
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USB_HID_REQUEST_SET_IDLE = $0A;
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USB_HID_REQUEST_SET_PROTOCOL = $0B;
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Section 7.2
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| HID Protocol types
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USB_HID_PROTOCOL_BOOT = 0;
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Section 7.2.5
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USB_HID_PROTOCOL_REPORT = 1;
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Section 7.2.5
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| HID Report types
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USB_HID_REPORT_INPUT = 1;
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Section 7.2.1
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USB_HID_REPORT_OUTPUT = 2;
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Section 7.2.1
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USB_HID_REPORT_FEATURE = 3;
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Section 7.2.1
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| HID Report IDs
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USB_HID_REPORTID_NONE = 0;
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Section 7.2.1
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| HID Boot Protocol Button bits
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USB_HID_BOOT_LEFT_BUTTON = (1 shl 0);
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USB_HID_BOOT_RIGHT_BUTTON = (1 shl 1);
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USB_HID_BOOT_MIDDLE_BUTTON = (1 shl 2);
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USB_HID_BOOT_SIDE_BUTTON = (1 shl 3);
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USB_HID_BOOT_EXTRA_BUTTON = (1 shl 4);
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| HID Boot Protocol Report data
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USB_HID_BOOT_REPORT_SIZE = 3;
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Appendix B of HID Device Class Definition 1.11
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USB_HID_BOOT_DATA_SIZE = 8;
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Allocate more than the minimum to allow for extra data
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Type definitions
Mouse data
[Expand]
PMouseData = ^TMouseData;
TMouseData = record
Buttons:Word;
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The bitmap of current button values (eg MOUSE_LEFT_BUTTON or MOUSE_RIGHT_BUTTON)
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OffsetX:SmallInt;
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The X offset of the mouse pointer (May be negative, read as absolute if Buttons includes MOUSE_ABSOLUTE_X)
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OffsetY:SmallInt;
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The Y offset of the mouse pointer (May be negative, read as absolute if Buttons includes MOUSE_ABSOLUTE_Y)
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OffsetWheel:SmallInt;
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The X offset of the mouse pointer (May be negative, read as absolute if Buttons includes MOUSE_ABSOLUTE_WHEEL)
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MaximumX:Word;
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The maximum X value of the mouse (Only applicable if Buttons includes MOUSE_ABSOLUTE_X, otherwise must be 0)
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MaximumY:Word;
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The maximum Y value of the mouse (Only applicable if Buttons includes MOUSE_ABSOLUTE_Y, otherwise must be 0)
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MaximumWheel:Word;
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The maximum Wheel value of the mouse (Only applicable if Buttons includes MOUSE_ABSOLUTE_WHEEL, otherwise must be 0)
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Reserved:Word;
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Reserved field (Round structure to 16 bytes)
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Mouse buffer
[Expand]
PMouseBuffer = ^TMouseBuffer;
TMouseBuffer = record
Wait:TSemaphoreHandle;
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Buffer ready semaphore
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Start:LongWord;
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Index of first buffer ready
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Count:LongWord;
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Number of entries ready in buffer
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Buffer:array[0..(MOUSE_BUFFER_SIZE - 1)] of TMouseData;
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Mouse enumeration callback
TMouseEnumerate = function(Mouse:PMouseDevice; Data:Pointer):LongWord;
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Mouse notification callback
TMouseNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;
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Mouse device read
TMouseDeviceRead = function(Mouse:PMouseDevice; Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord;
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Mouse device control
TMouseDeviceControl = function(Mouse:PMouseDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
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Mouse device types
[Expand]
PMouseDevice = ^TMouseDevice;
TMouseDevice = record
| Device Properties
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Device:TDevice;
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The Device entry for this Mouse
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| Mouse Properties
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MouseId:LongWord;
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Unique Id of this Mouse in the Mouse table
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MouseState:LongWord;
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Mouse state (eg MOUSE_STATE_ATTACHED)
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MouseRate:LongWord;
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Mouse sample rate (Samples per second)
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DeviceRead:TMouseDeviceRead;
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A Device specific DeviceRead method implementing a standard Mouse device interface (Or nil if the default method is suitable)
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DeviceControl:TMouseDeviceControl;
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A Device specific DeviceControl method implementing a standard Mouse device interface (Or nil if the default method is suitable)
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| Driver Properties
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Lock:TMutexHandle;
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Mouse lock
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Buffer:TMouseBuffer;
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Mouse input buffer
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| Statistics Properties
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ReceiveCount:LongWord;
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ReceiveErrors:LongWord;
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BufferOverruns:LongWord;
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| Internal Properties
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Prev:PMouseDevice;
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Previous entry in Mouse table
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Next:PMouseDevice;
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Next entry in Mouse table
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USB mouse device types
[Expand]
PUSBMouseDevice = ^TUSBMouseDevice;
TUSBMouseDevice = record
| Mouse Properties
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Mouse:TMouseDevice;
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| USB Properties
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HIDInterface:PUSBInterface;
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USB HID Mouse Interface
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ReportRequest:PUSBRequest;
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USB request for mouse report data
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ReportEndpoint:PUSBEndpointDescriptor;
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USB Mouse Interrupt IN Endpoint
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PendingCount:LongWord;
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Number of USB requests pending for this mouse
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WaiterThread:TThreadId;
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Thread waiting for pending requests to complete (for mouse detachment)
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Public variables
Mouse logging
MOUSE_DEFAULT_LOG_LEVEL:LongWord = MOUSE_LOG_LEVEL_DEBUG;
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Minimum level for Mouse messages. Only messages with level greater than or equal to this will be printed.
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MOUSE_LOG_ENABLED:Boolean;
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Function declarations
Initialization functions
[Expand]
procedure MouseInit;
Description: Initialize the mouse unit, device table and USB mouse driver
| Note
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Called only during system startup
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Mouse functions
[Expand]
function MousePeek:LongWord;
Description: Peek at the global mouse buffer to see if any data packets are ready
| Return
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ERROR_SUCCESS if packets are ready, ERROR_NO_MORE_ITEMS if not or another error code on failure
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[Expand]
function MouseRead(Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord; inline;
Description: Read mouse data packets from the global mouse buffer
| Buffer
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Pointer to a buffer to copy the mouse data packets to
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| Size
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The size of the buffer in bytes (Must be at least TMouseData or greater)
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| Count
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The number of mouse data packets copied to the bufferm
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseReadEx(Buffer:Pointer; Size,Flags:LongWord; var Count:LongWord):LongWord;
Description: Read mouse data packets from the global mouse buffer
| Buffer
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Pointer to a buffer to copy the mouse data packets to
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| Size
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The size of the buffer in bytes (Must be at least TMouseData or greater)
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| Flags
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The flags for the behaviour of the read (eg MOUSE_FLAG_NON_BLOCK)
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| Count
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The number of mouse data packets copied to the buffer
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseWrite(Buffer:Pointer; Size,Count:LongWord):LongWord;
Description: Write mouse data packets to the global mouse buffer
| Buffer
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Pointer to a buffer to copy the mouse data packets from
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| Size
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The size of the buffer in bytes (Must be at least TMouseData or greater)
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| Count
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The number of mouse data packets to copy from the buffer
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseFlush:LongWord;
Description: Flush the contents of the global mouse buffer
| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
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
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The mouse device to read from
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| Buffer
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Pointer to a buffer to copy the mouse data packets to
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| Size
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The size of the buffer in bytes (Must be at least TMouseData or greater)
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| Count
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The number of mouse data packets copied to the buffer
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceControl(Mouse:PMouseDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
Description: Perform a control request on the specified mouse device
| Mouse
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The mouse device to control
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| Request
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The request code for the operation (eg MOUSE_CONTROL_GET_FLAG)
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| Argument1
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The first argument for the operation (Dependent on request code)
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| Argument2
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The second argument for the operation (Dependent on request code)
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceSetState(Mouse:PMouseDevice; State:LongWord):LongWord;
Description: Set the state of the specified mouse and send a notification
| Mouse
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The mouse to set the state for
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| State
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The new state to set and notify
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceCreate:PMouseDevice;
Description: Create a new Mouse device entry
| Return
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Pointer to new Mouse device entry or nil if mouse could not be created
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[Expand]
function MouseDeviceCreateEx(Size:LongWord):PMouseDevice;
Description: Create a new Mouse device entry
| Size
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Size in bytes to allocate for new mouse (Including the mouse device entry)
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| Return
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Pointer to new Mouse device entry or nil if mouse could not be created
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[Expand]
function MouseDeviceDestroy(Mouse:PMouseDevice):LongWord;
Description: Destroy an existing Mouse device entry
| Mouse
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The mouse device to destroy
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceRegister(Mouse:PMouseDevice):LongWord;
Description: Register a new Mouse device in the Mouse table
| Mouse
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The mouse device to register
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceDeregister(Mouse:PMouseDevice):LongWord;
Description: Deregister a Mouse device from the Mouse table
| Mouse
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The mouse device to deregister
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceFind(MouseId:LongWord):PMouseDevice;
Description: Find a mouse device by ID in the mouse table
| MouseId
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The ID number of the mouse to find
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| Return
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Pointer to mouse device entry or nil if not found
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[Expand]
function MouseDeviceFindByName(const Name:String):PMouseDevice; inline;
Description: Find a mouse device by name in the mouse table
| Name
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The name of the mouse to find (eg Mouse0)
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| Return
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Pointer to mouse device entry or nil if not found
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[Expand]
function MouseDeviceFindByDescription(const Description:String):PMouseDevice; inline;
Description: Find a mouse device by description in the mouse table
| Description
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The description of the mouse to find (eg USB HID Mouse)
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| Return
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Pointer to mouse device entry or nil if not found
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[Expand]
function MouseDeviceEnumerate(Callback:TMouseEnumerate; Data:Pointer):LongWord;
Description: Enumerate all mouse devices in the mouse table
| Callback
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The callback function to call for each mouse in the table
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| Data
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A private data pointer to pass to callback for each mouse in the table
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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[Expand]
function MouseDeviceNotification(Mouse:PMouseDevice; Callback:TMouseNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: Register a notification for mouse device changes
| Mouse
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The mouse device to notify changes for (Optional, pass nil for all mice)
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| Callback
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The function to call when a notification event occurs
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| Data
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A private data pointer to pass to callback when a notification event occurs
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| Notification
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The events to register for notification of (eg DEVICE_NOTIFICATION_REGISTER)
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| Flags
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The flags to control the notification (eg NOTIFIER_FLAG_WORKER)
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RTL console functions
[Expand]
function SysConsoleHideMouse(AUserData:Pointer):Boolean;
Description: Handler for Platform ConsoleHideMouse function
[Expand]
function SysConsoleShowMouse(X,Y:LongWord; AUserData:Pointer):Boolean;
Description: Handler for Platform ConsoleShowMouse function
[Expand]
function SysConsoleReadMouse(var X,Y,Buttons:LongWord; AUserData:Pointer):Boolean;
Description: Handler for Platform ConsoleReadMouse function
USB mouse functions
[Expand]
function USBMouseDeviceRead(Mouse:PMouseDevice; Buffer:Pointer; Size:LongWord; var Count:LongWord):LongWord;
Description: Implementation of MouseDeviceRead API for USB Mouse
| Note
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Not intended to be called directly by applications, use MouseDeviceRead instead.
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[Expand]
function USBMouseDeviceControl(Mouse:PMouseDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
Description: Implementation of MouseDeviceControl API for USB Mouse
| Note
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Not intended to be called directly by applications, use MouseDeviceControl instead.
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[Expand]
function USBMouseDriverBind(Device:PUSBDevice; Interrface:PUSBInterface):LongWord;
Description: Bind the Mouse driver to a USB device if it is suitable
| Device
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The USB device to attempt to bind to
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| Interrface
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The USB interface to attempt to bind to (or nil for whole device)
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| Return
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USB_STATUS_SUCCESS if completed, USB_STATUS_DEVICE_UNSUPPORTED if unsupported or another error code on failure.
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[Expand]
function USBMouseDriverUnbind(Device:PUSBDevice; Interrface:PUSBInterface):LongWord;
Description: Unbind the Mouse driver from a USB device
| Device
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The USB device to unbind from
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| Interrface
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The USB interface to unbind from (or nil for whole device)
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| Return
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USB_STATUS_SUCCESS if completed or another error code on failure
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[Expand]
procedure USBMouseReportWorker(Request:PUSBRequest);
Description: Called (by a Worker thread) to process a completed USB request from a USB mouse IN interrupt endpoint
| Request
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The USB request which has completed
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[Expand]
procedure USBMouseReportComplete(Request:PUSBRequest);
Description: Called when a USB request from a USB mouse IN interrupt endpoint completes
| Request
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The USB request which has completed
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| Note
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Request is passed to worker thread for processing to prevent blocking the USB completion
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Mouse helper functions
[Expand]
function MouseGetCount:LongWord; inline;
Description: Get the current mouse count
[Expand]
function MouseDeviceCheck(Mouse:PMouseDevice):PMouseDevice;
Description: Check if the supplied Mouse is in the mouse table
[Expand]
function MouseDeviceTypeToString(MouseType:LongWord):String;
Description: To be documented
[Expand]
function MouseDeviceStateToString(MouseState:LongWord):String;
Description: To be documented
[Expand]
function MouseDeviceStateToNotification(State:LongWord):LongWord;
Description: Convert a Mouse state value into the notification code for device notifications
[Expand]
function MouseInsertData(Mouse:PMouseDevice; Data:PMouseData; Signal:Boolean):LongWord;
Description: Insert a TMouseData entry into the mouse buffer (Direct or Global)
| Mouse
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The mouse device to insert data for
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| Data
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The TMouseData entry to insert
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| Signal
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If True then signal that new data is available in the buffer
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| Return
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ERROR_SUCCESS if completed or another error code on failure
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| Note
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Caller must hold the mouse lock
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[Expand]
procedure MouseLog(Level:LongWord; Mouse:PMouseDevice; const AText:String);
Description: To be documented
[Expand]
procedure MouseLogInfo(Mouse:PMouseDevice; const AText:String); inline;
Description: To be documented
[Expand]
procedure MouseLogWarn(Mouse:PMouseDevice; const AText:String); inline;
Description: To be documented
[Expand]
procedure MouseLogError(Mouse:PMouseDevice; const AText:String); inline;
Description: To be documented
[Expand]
procedure MouseLogDebug(Mouse:PMouseDevice;const AText:String); inline;
Description: To be documented
USB mouse helper functions
[Expand]
function USBMouseCheckDevice(Device:PUSBDevice):Boolean;
Description: Check if the supplied USB device is suitable for detection as a HID Mouse Device
| Device
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The USB device to check
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| Return
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True if the device is suitable or False if it is not
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[Expand]
function USBMouseDeviceSetProtocol(Mouse:PUSBMouseDevice; Protocol:Byte):LongWord;
Description: Set the report protocol for a USB mouse device
| Mouse
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The USB mouse device to set the report protocol for
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| Protocol
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The report protocol to set (eg USB_HID_PROTOCOL_BOOT)
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| Return
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USB_STATUS_SUCCESS if completed or another USB error code on failure
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