GHOST_Wintab Class Reference

#include <GHOST_Wintab.hh>

Public Member Functions
	~GHOST_Wintab ()
void	enable ()
void	disable ()
void	gainFocus ()
void	loseFocus ()
void	leaveRange ()
void	remapCoordinates ()
void	mapWintabToSysCoordinates (int x_in, int y_in, int &x_out, int &y_out)
void	updateCursorInfo ()
void	processInfoChange (LPARAM lParam)
bool	devicesPresent ()
void	getInput (std::vector< GHOST_WintabInfoWin32 > &outWintabInfo)
bool	trustCoordinates ()
bool	testCoordinates (int sysX, int sysY, int wtX, int wtY)
GHOST_TabletData	getLastTabletData ()

Static Public Member Functions
static GHOST_Wintab *	loadWintab (HWND hwnd)
static void	setDebug (bool debug)
static bool	getDebug ()

Detailed Description

Definition at line 74 of file GHOST_Wintab.hh.

Constructor & Destructor Documentation

~GHOST_Wintab()

GHOST_Wintab::~GHOST_Wintab

(

)

Definition at line 248 of file GHOST_Wintab.cc.

References WINTAB_PRINTF.

Member Function Documentation

devicesPresent()

bool GHOST_Wintab::devicesPresent

(

)

Whether Wintab devices are present.

Returns

True if Wintab devices are present.

Definition at line 343 of file GHOST_Wintab.cc.

disable()

void GHOST_Wintab::disable

(

)

Disables the Wintab context and unwinds Wintab state.

Definition at line 259 of file GHOST_Wintab.cc.

References loseFocus().

Referenced by GHOST_SystemWin32::s_wndProc().

enable()

void GHOST_Wintab::enable

(

)

Enables Wintab context.

Definition at line 253 of file GHOST_Wintab.cc.

Referenced by GHOST_SystemWin32::s_wndProc().

gainFocus()

void GHOST_Wintab::gainFocus

(

)

Brings Wintab context to the top of the overlap order.

Definition at line 268 of file GHOST_Wintab.cc.

Referenced by GHOST_SystemWin32::s_wndProc().

getDebug()

bool GHOST_Wintab::getDebug ( )

static

Definition at line 540 of file GHOST_Wintab.cc.

getInput()

void GHOST_Wintab::getInput

(

std::vector< GHOST_WintabInfoWin32 > &

outWintabInfo

)

Translate Wintab packets into GHOST_WintabInfoWin32 structs.

Parameters

outWintabInfo

Storage to return resulting GHOST_WintabInfoWin32 data.

Definition at line 353 of file GHOST_Wintab.cc.

References cos, fabs(), float, GHOST_kButtonMaskNone, GHOST_kEventButtonDown, GHOST_kEventButtonUp, GHOST_kTabletModeEraser, GHOST_kTabletModeNone, GHOST_kTabletModeStylus, i, M_PI, M_PI_2, out, and sin.

Referenced by GHOST_SystemWin32::processWintabEvent().

getLastTabletData()

GHOST_TabletData GHOST_Wintab::getLastTabletData

(

)

Retrieve the most recent tablet data, or none if pen is not in range.

Returns

Most recent tablet data, or none if pen is not in range.

Definition at line 348 of file GHOST_Wintab.cc.

Referenced by GHOST_SystemWin32::processWintabEvent().

leaveRange()

void GHOST_Wintab::leaveRange

(

)

Clean up when Wintab leaves tracking range.

Definition at line 288 of file GHOST_Wintab.cc.

References GHOST_TABLET_DATA_NONE.

Referenced by loseFocus(), and GHOST_SystemWin32::s_wndProc().

loadWintab()

GHOST_Wintab * GHOST_Wintab::loadWintab ( HWND hwnd )

static

Loads Wintab if available.

Parameters

hwnd	Window to attach Wintab context to.

Returns

Pointer to the initialized GHOST_Wintab object, or null if initialization failed.

Definition at line 157 of file GHOST_Wintab.cc.

References access_violation_exception_filter().

Referenced by GHOST_WindowWin32::loadWintab().

loseFocus()

void GHOST_Wintab::loseFocus

(

)

Puts Wintab context at bottom of overlap order and unwinds Wintab state.

Definition at line 274 of file GHOST_Wintab.cc.

References GHOST_kTabletModeNone, and leaveRange().

Referenced by disable(), and GHOST_SystemWin32::s_wndProc().

mapWintabToSysCoordinates()

void GHOST_Wintab::mapWintabToSysCoordinates	(	int	x_in,
		int	y_in,
		int &	x_out,
		int &	y_out )

Maps Wintab to Win32 display coordinates.

Parameters

x_in	The tablet x coordinate.
y_in	The tablet y coordinate.
x_out	Output for the Win32 mapped x coordinate.
y_out	Output for the Win32 mapped y coordinate.

Definition at line 484 of file GHOST_Wintab.cc.

References abs, in, and out.

Referenced by GHOST_SystemWin32::processWintabEvent(), and testCoordinates().

processInfoChange()

void GHOST_Wintab::processInfoChange

(

LPARAM

lParam

)

Handle Wintab info changes such as change in number of connected tablets.

Parameters

lParam

LPARAM of the event.

Definition at line 334 of file GHOST_Wintab.cc.

References WINTAB_PRINTF.

Referenced by GHOST_SystemWin32::s_wndProc().

remapCoordinates()

void GHOST_Wintab::remapCoordinates

(

)

Handle Wintab coordinate changes when DisplayChange events occur.

Definition at line 298 of file GHOST_Wintab.cc.

Referenced by GHOST_SystemWin32::s_wndProc().

setDebug()

void GHOST_Wintab::setDebug ( bool debug )

static

Definition at line 535 of file GHOST_Wintab.cc.

Referenced by GHOST_SystemWin32::initDebug().

testCoordinates()

bool GHOST_Wintab::testCoordinates	(	int	sysX,
		int	sysY,
		int	wtX,
		int	wtY )

Tests whether Wintab coordinates can be trusted by comparing Win32 and Wintab reported cursor position.

Parameters

sysX	System cursor x position.
sysY	System cursor y position.
wtX	Wintab cursor x position.
wtY	Wintab cursor y position.

Returns

True if Win32 and Wintab cursor positions match within tolerance.

NOTE: Only test coordinates on button press, not release. This prevents issues when asynchronous mismatch causes mouse movement to replay and snap back, which is only an issue while drawing.

Definition at line 518 of file GHOST_Wintab.cc.

References abs, and mapWintabToSysCoordinates().

Referenced by GHOST_SystemWin32::processWintabEvent().

trustCoordinates()

bool GHOST_Wintab::trustCoordinates

(

)

Whether Wintab coordinates should be trusted.

Returns

True if Wintab coordinates should be trusted.

Definition at line 513 of file GHOST_Wintab.cc.

Referenced by GHOST_SystemWin32::processWintabEvent().

updateCursorInfo()

void GHOST_Wintab::updateCursorInfo

(

)

Updates cached Wintab properties for current cursor.

Definition at line 310 of file GHOST_Wintab.cc.

References Pressure, and WINTAB_PRINTF.

Referenced by GHOST_SystemWin32::s_wndProc().

---

The documentation for this class was generated from the following files:

• GHOST_Wintab.hh
• GHOST_Wintab.cc